Marine Generator / Alternator

medium 1384 models total

The alternator is the electrical half of a genset — the engine only supplies rotating torque, and everything about frequency stability, voltage regulation, and parallel operation with other sets happens inside this machine and its regulator.

Read more — Marine Generator / Alternator explained ▾

What makes this type

A marine alternator converts the mechanical rotation delivered by its prime mover (usually a diesel engine, sometimes a steam turbine or shaft-driven power take-off) into three-phase AC power at a fixed frequency. What distinguishes marine alternators from ashore industrial generators is that they must run stably in parallel with one another on a floating, isolated grid with no shore-side stiffness to fall back on — the ship's switchboard is the entire grid. Getting two alternators to share both real load (kW, set by engine governors) and reactive load (kVAr, set by the AVRs) correctly, without one machine hunting or motoring the other, is the defining engineering problem of marine power generation and is why alternator and governor tuning is treated as a matched system, not independent components.

Marine alternator cross-section — Cutaway of a shipboard alternator showing the stator windings around the rotating field rotor on its drive shaft, supported on drive-end and non-drive-end bearings, with the cooling fan, exciter and terminal box.

Main components

Stator and rotor

The stator carries the output windings; the rotor carries the field winding, excited either by a rotating exciter (brushless, standard on modern ships) or by slip rings and brushes on older designs.

Automatic Voltage Regulator (AVR)

Senses terminal voltage and adjusts field excitation to hold it constant as load changes; it also carries out reactive load sharing between paralleled alternators through droop or cross-current compensation wiring.

Bearings and cooling

Air- or water-air-cooled depending on rating; bearing insulation is used on larger machines to prevent stray shaft currents from pitting the bearings.

Protection relays

Over/under voltage, over/under frequency, reverse power, and differential protection sit between the alternator and the switchboard and are what actually trips a unit off the bus during a fault.

Selection / Sizing

Rated in kVA at a stated power factor (commonly 0.8 lagging), which sets both the real power (kW) and reactive power (kVAr) the machine can deliver — a common sizing mistake is checking kW against the load list without checking whether the load's actual power factor pushes reactive demand past what the alternator can supply. Insulation class and temperature rise class (typically class F insulation with class B temperature rise, giving a service margin) affect how hard the machine can be run continuously versus how much thermal headroom is left for overload conditions like a large motor starting.

Regulations / Class

Class rules (IACS members' unified requirements) set short-circuit withstand and protection coordination requirements for switchboard-connected generators, and require type testing of the alternator including temperature rise and short-circuit tests. IEC 60092 series standards govern marine electrical installations broadly, and class surveys confirm protection relay settings match the approved switchboard studies at each renewal.

Typical faults

AVR drift or failure — voltage instability that shows up first as difficulty sharing reactive load when paralleling with another set.
Bearing pitting from stray shaft currents — on larger machines without proper shaft grounding brushes, current finds a path through the bearings and erodes the races over time.
Insulation degradation from moisture — a common issue after long idle periods in humid engine rooms; megger testing before starting a long-idle set catches this before it causes a ground fault.
Exciter diode failure — on brushless machines, a failed rotating rectifier diode causes ripple in the field current and erratic voltage output.
Reverse power trips during load transfer — often a symptom of governor response lag rather than the alternator itself, but it looks like an alternator fault on the switchboard alarm.

What to look for in a supplier

Type-test certificates covering short-circuit withstand and temperature rise for the specific frame size, not just a data sheet.
AVR and governor compatibility confirmed for parallel operation with the ship's existing sets, if this is a replacement or addition to an existing switchboard.
Insulation class and service factor documented, matched to the engine room's actual ambient temperature range.
Protection relay coordination study included or supportable, since a mismatched relay setting is a common cause of nuisance trips after installation.

Megger the windings before starting any generator that has sat idle more than a few weeks in a humid engine room — a ground fault on load is a far worse day than a five-minute insulation test beforehand.

Inspector Mode Show All 1384 total

10 manufacturers · 1384 models

ABB

378

AMG 0200-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) provides excellent thermal endurance in hot marine environments.
Dual axial fans allow flexible air or water cooling, improving reliability across temperature ranges (-20 °C to +45 °C).
Sealed‑for‑life bearing option for frames <400 reduces routine maintenance.
Vacuum pressure impregnated (VPI) winding system gives superior moisture resistance and dielectric strength.
Broad power range compatibility within ABB’s AMG series simplifies spares and upgrades.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and limited water ingress; not suitable for heavy spray zones (IP55+ preferred).
Moisture‑sensitive insulation still requires regular IR and partial‑discharge testing to avoid degradation.
Larger frame sizes (>400) need greasable bearings, adding periodic lubrication tasks.
AVR units (UNITROL/GEN series) can be prone to corrosion in harsh salt environments if not regularly inspected.

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator with high‑temperature insulation, flexible cooling options and low‑maintenance sealed bearings. Avoid if the installation area is exposed to heavy spray or requires an IP55+ enclosure, or if space constraints preclude the generator’s frame size.

Use Cases: Provides main service power for shipboard systems such as lighting, HVAC, cargo handling equipment, and can serve as an emergency generator on large commercial vessels or offshore platforms where robust, low‑maintenance auxiliary generation is required.

Manufacturer Datasheet

Datasheet

AMG 0200-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H VPI insulation provides excellent moisture resistance and long life in harsh marine environments
IP44 enclosure protects against splashing water and salt spray while allowing easy access for maintenance
Dual axial fan design offers flexible air or water cooling to suit different installation spaces
Sealed‑for‑life bearings (frame <400) reduce routine lubrication requirements
Compatible with ABB UNITROL 1000/GEN AVR families for precise voltage regulation and overload protection

Weaknesses

200 kVA output may be insufficient for larger vessels that require higher auxiliary power
IP44 rating does not protect against dust ingress; environments demanding IP65 or higher need a different model
VPI windings still require regular insulation resistance testing to detect moisture ingress early
Cooling performance depends on clean fan blades and unobstructed airflow; fouling can lead to overheating
Initial acquisition cost is higher than some low‑cost competitors due to premium materials and certification

Typical Vessels: Medium‑size tankers (up to 30 k DWT)Offshore supply vesselsFerries and Ro‑Ro shipsCoastal container feedersNaval auxiliary or training ships

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL approvedABS classedLloyd’s Register (LR) approved

Decision Guide: Choose if you need a compact, high‑insulation‑class generator with proven reliability for auxiliary or emergency power on medium‑size vessels and can accommodate IP44 protection. Avoid if the vessel requires >500 kVA, dust‑tight (IP65+) enclosures, or ultra‑lightweight equipment where weight is critical.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, cargo handling systems, and emergency power on offshore support ships, ferries, and medium bulk carriers. Also used in standby mode for propulsion auxiliaries on vessels with diesel‑electric drives.

Manufacturer Datasheet

Datasheet

AMG 0200-400V-50Hz-IP55

· synchronous marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give excellent thermal endurance and moisture resistance.
IP55 sealed enclosure protects against salt spray and dust, suitable for offshore conditions.
Dual‑axial fan cooling with optional water‑air hybrid provides flexible temperature management.
Robust UNITROL 1000/GEN AVR series offers precise voltage regulation and built‑in over/under‑excitation limits.
Sealed‑for‑life bearings (frame <400) reduce routine lubrication tasks.

Weaknesses

Power rating limited to 200 kVA – not suitable for large main‑propulsion auxiliary loads.
VPI windings require careful moisture monitoring; insulation testing is mandatory during overhauls.
Dual‑fan cooling demands regular cleaning of blades and ducts in salty environments.
If greasable bearings are fitted (frame 450), periodic re‑greasing adds maintenance overhead.
Physical size (frame 400) may be restrictive on vessels with tight engine‑room space.

Typical Vessels: Offshore supply vesselPlatform support vesselFerryCoastal cargo shipSmall cruise linerFishing factory vessel

Certifications: DNV GLABSLloyd's Register

Decision Guide: Choose if you need a compact, high‑insulation‑class generator that can withstand salt‑spray exposure and offers flexible cooling for auxiliary power on medium‑size vessels. Avoid if the vessel requires >300 kVA of standby power, has severe space constraints, or prefers a low‑maintenance oil‑free alternative.

Use Cases: Typically installed as an auxiliary or emergency generator to supply ship services such as lighting, HVAC, cargo handling equipment, and shore‑power conversion on offshore support vessels and coastal carriers. Also used in modular power packages for remote platform electrification where reliability and environmental protection are critical.

Manufacturer Datasheet

Datasheet

AMG 0200-400V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) with VPI vacuum pressure impregnation for long life in salty environments
Dual axial fan cooling provides flexible air or water cooling and operates from –20 °C to +45 °C
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation limiters
Sealed‑for‑life bearing option (frame <400) reduces routine lubrication maintenance
Proven ABB Marine product line with extensive field service support and condition monitoring tools

Weaknesses

IP23 rating only protects against limited splashing; not suitable for areas with direct water jet exposure
Requires regular insulation resistance testing and vibration monitoring to detect moisture ingress
Physical footprint and weight are larger than some compact diesel‑generator alternatives of similar power
Cooling performance depends on clean airflow; salt deposits can degrade fan efficiency if not maintained
Advanced AVR units add complexity to troubleshooting and may need specialist spares

Typical Vessels: Feeder Container ShipHandysize Bulk CarrierSmall Crude Oil Tanker (up to ~30 k DWT)Offshore Supply VesselCruise Ship Auxiliary Power Unit

Certifications: DNVABS

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator with robust H‑class insulation, integrated ABB UNITROL AVR and flexible cooling for medium‑size commercial vessels. Avoid if the installation demands higher ingress protection (e.g., IP55), extremely limited space, or if you prefer low‑maintenance oil‑free alternatives.

Use Cases: Commonly installed as a main auxiliary generator on feeder container ships, handysize bulk carriers, and offshore support vessels to supply hotel loads, emergency power, and dynamic positioning systems. Also used in cruise ship secondary power plants where redundancy and easy integration with ABB’s monitoring platforms are required.

Manufacturer Datasheet

Datasheet

AMG 0200-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H VPI‑impregnated windings provide high thermal endurance and moisture resistance
IP44 sealed enclosure protects against splashing seawater and dust ingress
Dual axial fans with optional water‑cooling give flexible cooling for varied ambient conditions
Sealed‑for‑life bearings (frame <400) reduce routine maintenance intervals
Modular LV series design allows easy integration into standard 400 V shipboard power systems

Weaknesses

200 kVA rating may be undersized for larger vessels requiring higher auxiliary power
IP44 does not protect against high‑pressure water jets or full submersion (lower than IP55/66)
Bearing lubrication must be checked on frames ≥450, adding periodic maintenance tasks
Moisture‑sensitive insulation still requires regular IR and megger testing in marine service
Physical footprint can be significant for small engine rooms; detailed dimensions not publicly listed

Typical Vessels: Offshore supply vesselPlatform support vesselSmall tankers / product carriersContainer feeder shipsCruise ship hotel‑load auxiliaryNaval auxiliary or patrol vessels

Decision Guide: Choose if you need a reliable 200 kVA generator with high temperature class, flexible cooling options and low‑maintenance bearings for medium‑size ships or offshore support craft. Avoid if the vessel requires >500 kVA auxiliary power, higher ingress protection (IP55/66) or fully sealed bearing systems without periodic greasing.

Use Cases: Commonly installed as a main auxiliary generator supplying hotel loads, emergency power, and dynamic positioning support on offshore supply vessels and medium‑size commercial ships where space is limited but robust performance in salty, humid conditions is essential.

Manufacturer Datasheet

Datasheet

AMG 0200-400V-60Hz-IP55

· marine synchronous generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H VPI‑impregnated windings give high thermal endurance and moisture resistance.
IP55 sealed enclosure protects against dust and water spray in harsh marine environments.
Dual axial fans allow flexible air or water cooling, suitable for a wide temperature range (-20 °C to +45 °C).
Integrated UNITROL AVR series provides precise voltage regulation and built‑in under/over‑excitation limiters.
Modular frame sizes (400–630) enable installation on many vessel layouts.

Weaknesses

Requires regular insulation resistance and moisture testing to prevent dielectric degradation.
Bearings on frames <450 kg are sealed‑for‑life, larger frames need periodic greasing and inspection.
200 kVA output may be insufficient for high‑power main‑propulsion or large hotel‑load ships.
IP55 rating does not protect against full submersion; additional splash guards may be needed in heavy spray zones.
Physical size and weight can limit placement on small hulls or retrofits.

Typical Vessels: Offshore Supply VesselPlatform Support / DP‑enabled vesselMedium‑size Container Ship (auxiliary power)Cruise Ferry (hotel load)Tanker (emergency standby)

Decision Guide: Choose if you need a dependable 200 kVA auxiliary generator with high insulation class, flexible cooling options and proven AVR control for medium‑size commercial or offshore vessels. Avoid if the vessel requires higher power output, fully submersible protection (IP68) or a completely maintenance‑free bearing system.

Use Cases: The AMG 0200 supplies shipboard hotel loads, emergency standby power, DP‑system auxiliaries and can serve as a secondary main‑propulsion generator on vessels where the primary engine provides propulsion. It is commonly installed in offshore support ships and medium‑size cargo carriers operating in temperate to tropical climates.

Manufacturer Datasheet

Datasheet

AMG 0200-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H vacuum‑pressure‑impregnated insulation gives long life even at high temperatures.
IP23 rating with robust enclosure suitable for typical shipboard spray environments.
Dual axial fans and optional water‑cooling provide wide ambient temperature range (‑20 °C to +45 °C).
Sealed‑for‑life bearings on frames <400 reduce routine lubrication tasks.
Compatible with ABB UNITROL 1000 or GEN06/GEN08 AVR families for precise voltage regulation.

Weaknesses

IP23 only protects against splashing; harsher environments may require additional shielding.
Moisture ingress can degrade insulation, demanding regular IR and partial‑discharge testing.
Frames ≥450 use greasable bearings, increasing maintenance compared with sealed units.
Physical size and weight are sizable for small vessels or retrofits.
Cooling performance depends on unobstructed airflow; fouling of fans can cause overheating.

Typical Vessels: Container shipsProduct tankersBulk carriersCruise linersOffshore supply vesselsNaval auxiliaries

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose this generator when a reliable 200 kVA ship service power source with high‑temperature insulation, flexible cooling options and proven AVR compatibility is required. Avoid it on vessels that need higher ingress protection (e.g., IP55), ultra‑compact units, or where maintenance intervals must be minimal.

Use Cases: Provides main auxiliary power for hotel loads, emergency generation, and dynamic positioning support on medium‑size commercial ships; also used as shore‑power generators on offshore platforms where robust cooling and class‑H insulation are advantageous.

Manufacturer Datasheet

Datasheet

AMG 0200-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

200 kVA rating matches the auxiliary power needs of medium‑size vessels without oversizing
Class‑H VPI insulated windings give high thermal endurance in hot, humid marine environments
IP44 enclosure protects against splashing seawater and dust while allowing easy access for maintenance
Designed to integrate with ABB UNITROL AVR systems for precise voltage regulation and protection
Part of ABB’s AMG series – modular design simplifies installation and spare‑part logistics

Weaknesses

Limited to 440 V/50 Hz; additional transformers may be required for vessels operating on 60 Hz or higher voltages
IP44 is only splash‑proof, not fully sealed against immersion (e.g., IP66 would be preferable in harsh spray zones)
Cooling relies on axial fans; performance can degrade in very high ambient temperatures or when airflow is obstructed
Requires regular insulation resistance and partial‑discharge testing to guard against moisture ingress
No built‑in redundancy – a single unit failure impacts auxiliary power unless a backup generator is installed

Typical Vessels: Offshore supply vesselPlatform support vesselMedium‑size tankerContainer feederCruise ship auxiliary systemNaval auxiliary/auxiliary generator set

Certifications: IMO D-2DNV GL

Decision Guide: Choose this generator if you need a reliable 200 kVA auxiliary power source with high‑temperature insulation, IP44 protection and seamless integration with ABB AVR units on medium‑size commercial or offshore vessels. Avoid it when the vessel requires higher voltage levels (e.g., 690 V), full immersion protection (IP66) or built‑in redundancy without adding a second set.

Use Cases: Typically installed as the main auxiliary generator on offshore supply ships, platform support vessels and medium‑size tankers to supply hotel loads, emergency power and occasional propulsion assist. It is also used on cruise ship service decks where compact, high‑temperature tolerant generators are required.

Manufacturer Datasheet

Datasheet

AMG 0200-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulation allows operation in harsh thermal environments up to +45 °C.
IP55 rating protects against dust ingress and water spray, ideal for salty sea‑air conditions.
Integrated ABB UNITROL/GEN AVR options give precise voltage regulation and built‑in under/over‑excitation limits.
Standard LV frame (400‑630) fits medium‑size vessels without extensive structural modifications.
ABB global service network provides spare parts and condition monitoring (Ability LEAP).

Weaknesses

Relatively high initial capital cost compared with lower‑spec generators from budget manufacturers.
Fixed 440 V output limits flexibility for vessels requiring different voltage levels or higher power ratings.
Requires regular insulation resistance and partial discharge testing to maintain Class H performance in marine humidity.
Cooling system must be carefully maintained (air‑flow clearances, optional water cooling) to avoid overheating in tropical climates.

Typical Vessels: Offshore supply vesselPlatform support vesselFerryMid‑size cruise shipContainer feeder

Decision Guide: Choose if: you need a reliable 200 kVA generator with high temperature insulation, IP55 protection and ABB after‑sales support for vessels operating in corrosive marine environments. Avoid if: budget constraints demand a lower‑cost unit, or the vessel requires higher voltage/power ratings beyond the LV range.

Use Cases: Installed in the main or auxiliary power plant of medium‑size ships to supply propulsion auxiliaries, hotel loads and emergency power. Commonly mounted in engine rooms with air‑cooled (dual axial fans) or optional water‑cooled configurations, serving vessels that operate in tropical or high‑salinity waters where corrosion resistance is critical.

Manufacturer Datasheet

Datasheet

AMG 0200-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) insulation system (Class H) gives high dielectric strength and moisture resistance.
Dual‑mode cooling (axial fans with optional water‑cooling) supports operation from –20 °C to +45 °C and altitudes up to 1 000 m.
Sealed‑for‑life bearing option for frames <400 reduces routine lubrication maintenance.
Wide power range within ABB’s AMG series allows common spares and proven field support worldwide.
Integrated UNITROL/GEN AVR provides automatic voltage regulation with under/over‑excitation limiters.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; not suitable for harsh dust‑tight or splash‑proof environments requiring IP55/IP68.
Frames ≥450 require greasable bearings, adding periodic maintenance compared with fully sealed units.
Physical size and weight are typical of LV generators (frame 400–630) and may limit installation on very small vessels.
VPI system must be inspected for moisture ingress; failure can lead to costly winding repairs.
Limited to low‑voltage applications (≤690 V); not applicable where medium‑voltage generation is required.

Typical Vessels: Container shipsCrude oil and product tankersBulk carriersCruise linersOffshore supply vessels

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE 117‑1974Classified by major societies (e.g., DNV, ABS) – >90% confidence

Decision Guide: Choose if you need a reliable 200 kVA LV auxiliary generator with proven ABB service network, flexible cooling and high‑temperature insulation for medium‑size vessels. Avoid if the installation requires higher voltage output, a fully dust‑tight IP55/68 enclosure, or minimal maintenance bearing solutions.

Use Cases: Typically installed as an auxiliary or emergency power source to supply hotel loads, cargo handling equipment, and safety systems on container, tanker and bulk carriers; also used in cruise ships for redundancy of main generators.

Manufacturer Datasheet

Datasheet

AMG 0200-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H insulation allows operation up to +180 °C ambient temperature.
IP44 sealed enclosure protects against salt spray and moisture ingress.
Compact frame size suitable for limited engine‑room spaces on medium‑size vessels.
Dual axial fan design permits air or water cooling depending on installation needs.
ABB UNITROL AVR provides reliable voltage regulation with under/over‑excitation limits.

Weaknesses

Fixed 440 V output may require step‑down transformer for vessels standardized on 380 V systems.
IP44 rating does not protect against total dust ingress (IP65 would be higher).
Single‑unit power rating of 200 kVA limits use on larger ships requiring >500 kVA auxiliary power.
Moisture‑sensitive insulation demands regular IR testing and maintenance.
No built‑in redundancy; failure of the unit impacts ship’s electrical supply.

Typical Vessels: Offshore Supply VesselPlatform Supply VesselFerryCruise Ship (auxiliary power)Container Ship auxiliary

Certifications: DNV GLABSIEC 60034‑18‑32

Decision Guide: Choose if you need a compact, high‑temperature tolerant 200 kVA generator with robust voltage regulation for medium‑size vessels operating in salty, humid environments. Avoid if the vessel requires higher power output, fully dust‑tight protection, or built‑in redundancy.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply and platform support ships, providing propulsion start‑up power, hotel loads, and emergency backup. Also used on ferries and cruise vessels where space is limited but reliable 200 kVA output is required for lighting, HVAC, and cargo handling equipment.

Manufacturer Datasheet

Datasheet

AMG 0200-440V-60Hz-IP55

· marine synchronous generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) insulation system – Class H suitable for high temperature operation
IP55 rated enclosure protects against dust and water spray in harsh marine environments
Dual axial fans with optional water‑cooling give flexible cooling options from -20 °C to +45 °C
Integrated UNITROL 1000 or GEN06/GEN08 AVR provides precise voltage regulation and under/over‑excitation protection
Complies with IEC 60034-18-32 and IEEE Std 117‑1974, facilitating classification society approvals

Weaknesses

IP55 rating may be insufficient for zones requiring full waterproofing (e.g., IP66/IP67)
Fixed 440 V output limits use on vessels standardized on 6.3 kV or other voltage levels without a transformer
Bearing lubrication requires periodic inspection and re‑greasing for frames ≥450, adding maintenance effort
Moisture sensitivity of the windings demands regular insulation resistance testing
Physical size is larger than some newer high‑efficiency compact generators in the same power class

Typical Vessels: General cargo shipsContainer vessels (up to mid‑size)Bulk carriersTankers (product and chemical)Offshore supply vesselsFerries and cruise ship service decks

Certifications: IEC 60034-18-32 (insulation ageing standard)IEEE Std 117-1974

Decision Guide: Choose this generator when you need a proven ABB solution delivering 200 kVA with robust VPI insulation, flexible cooling and integrated AVR for vessels operating in moderate marine climates and where IP55 protection is adequate. Avoid it if the installation demands higher voltage levels, full waterproofing (IP66/IP67), or the smallest possible footprint and weight.

Use Cases: Provides auxiliary power for ship service loads such as lighting, HVAC, cargo handling equipment, and emergency power; can serve as a standby generator on offshore platforms, support dynamic positioning thrusters on supply vessels, or act as a shore‑power conversion unit where reliable voltage regulation is critical.

Manufacturer Datasheet

Datasheet

AMG 0200-690V-50Hz-IP23

· marine synchronous generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density for the 200 kVA class with compact frame sizes (400–630).
Robust VPI (vacuum pressure impregnation) H‑class insulation offering excellent moisture and thermal resistance.
Dual cooling options – axial fans plus optional water‑cooling – suitable for a wide ambient temperature range (-20 °C to +45 °C).
Sealed‑for‑life bearing option on frames <400 reduces maintenance intervals.
Designed to meet IEC 60034‑18‑32 and IEEE Std 117‑1974, facilitating classification approval.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; not dust‑tight or fully splash‑proof for harsh spray zones.
Frames ≥450 require greasable bearings, increasing routine maintenance workload.
Fixed output voltage of 690 V may necessitate step‑up transformers for vessels requiring higher bus voltages.
Size and weight are comparable to other 200 kVA generators; installation space can be a constraint on very tight engine rooms.
Performance degrades if cooling airflow is obstructed or if ambient humidity exceeds design limits.

Typical Vessels: Container shipTankerBulk carrierCruise liner (hotel load)Offshore supply vessel

Certifications: IEC 60034‑18‑32IEEE Std 117‑1974DNV GL approvalABS classificationLloyd’s Register certification

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator with robust H‑class VPI insulation, dual cooling flexibility and sealed‑for‑life bearings for reduced maintenance. Avoid if the installation requires dust‑tight (IP54+) protection, higher output voltage than 690 V, or extremely limited space/weight allowances.

Use Cases: Commonly installed as an auxiliary power source on medium‑size cargo vessels to supply hotel loads and emergency power, as well as on cruise ships for dedicated hotel‑electricity generation. Also used on offshore support vessels where flexible cooling (air or water) is advantageous in varying climates.

Manufacturer Datasheet

Datasheet

AMG 0200-690V-50Hz-IP44

· synchronous marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H (VPI) provides excellent resistance to moisture and salt corrosion
Sealed‑for‑life bearing design reduces maintenance intervals
IP44 enclosure balances protection against splashing water with easy access for inspection
Compact LV frame (400–630) fits medium‑size vessel engine rooms
Compatible with ABB UNITROL AVR series for precise voltage regulation

Weaknesses

Limited to low‑voltage 690 V output; not suitable where higher distribution voltages are required
IP44 rating does not protect against dust ingress, requiring regular cleaning in harsh marine environments
Cooling relies on axial fans; performance can degrade if airflow is obstructed by salt deposits
Weight and footprint are comparable to other 200 kVA units – may be restrictive on very space‑constrained vessels
Requires dedicated AVR unit (UNITROL) for full protection, adding extra cost and integration effort

Typical Vessels: Offshore Supply VesselPlatform Supply VesselContainer FeederSmall Crude Oil TankerCruise Ship Hotel‑load auxiliary system

Certifications: DNV GL Marine Equipment ApprovalABS (American Bureau of Shipping) Type ApprovalLloyd's Register ClassificationIEC 60034‑18‑32 insulation ageing standard

Decision Guide: Choose if: you need a reliable 200 kVA auxiliary generator for medium‑size vessels, require high moisture resistance and low maintenance bearings, and have space for a LV frame with fan cooling. Avoid if: the installation demands higher distribution voltage, a fully dust‑tight enclosure (IP65+), or minimal footprint for ultra‑compact engine rooms.

Use Cases: Commonly installed as main auxiliary power on offshore supply vessels to run hotel loads, deck machinery and emergency systems; also used as standby generators on container feeders and small tankers where a robust, low‑maintenance unit is preferred.

Manufacturer Datasheet

Datasheet

AMG 0200-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure protects against dust and water spray, suitable for corrosive sea air.
Class H VPI‑impregnated windings provide high temperature tolerance and long insulation life.
Dual axial fans with optional water cooling give flexible thermal management from –20 °C to +45 °C.
Integrated UNITROL 1000/GEN AVR series offers precise voltage regulation and overload protection.
Modular frame sizes (400‑630) allow installation on a wide range of vessel layouts.

Weaknesses

Requires regular bearing inspection or greasing unless a sealed‑for‑life version is specified.
Designed for 50 Hz operation only; not directly compatible with vessels standardising on 60 Hz.
Large physical footprint compared with compact diesel‑engine generator sets of similar rating.
Moisture sensitivity of the high‑class insulation demands strict humidity control during maintenance.
Initial acquisition cost is higher than basic low‑spec generators.

Typical Vessels: Offshore supply vesselFerryContainer ship (auxiliary power)Cruise ship hotel loadSmall tankers and bulk carriers

Decision Guide: Choose if you need a robust 200 kVA auxiliary generator with high temperature insulation, IP55 protection and flexible cooling for vessels operating in corrosive marine climates. Avoid if the vessel is limited by space or weight, operates on a 60 Hz electrical system, or seeks a lower‑cost solution with minimal maintenance.

Use Cases: Commonly installed as emergency power source, hotel‑load generator, or auxiliary propulsion support on offshore platforms, ferries and cruise ships where reliable, high‑temperature tolerant generation is critical.

Manufacturer Datasheet

Datasheet

AMG 0200-690V-60Hz-IP23

· synchronous marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High temperature Class H VPI insulated windings provide excellent durability in hot marine environments
Dual axial fans allow flexible air‑ or water‑cooled operation, improving cooling efficiency
Integrated UNITROL AVR offers precise voltage regulation and built‑in under/over‑excitation protection
Standardised frame sizes (400–630) simplify spare parts logistics and installation on a wide range of vessels
ABB global service network ensures rapid technical support and availability of certified spares

Weaknesses

IP23 rating only protects against limited solid objects and water spray; not suitable for heavily splashed or flooded compartments
200 kVA output may be insufficient for larger ships that require >500 kVA auxiliary power
Dual‑fan arrangement can generate higher acoustic noise compared with single‑stage designs
Maintenance of VPI insulated windings requires strict moisture control and periodic insulation testing
Bearing lubrication (sealed‑for‑life or greasable) adds a maintenance task not present on fully sealed generators

Typical Vessels: Offshore supply vesselCoastal container feederMedium‑size tankerFerry / Ro‑RoCruise ship auxiliary unit (mid‑size ships)

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven 200 kVA generator with high‑temperature insulation, flexible cooling options and ABB’s worldwide support. Avoid if the installation requires a fully sealed (IP55+) unit, higher power output, or ultra‑low noise operation.

Use Cases: Typically installed as an auxiliary or emergency generator on medium‑size merchant ships to supply shipboard hotel loads, cargo handling equipment, and shore‑power conversion; also used in offshore support vessels where compact, robust power is required.

Manufacturer Datasheet

Datasheet

AMG 0200-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density (200 kVA) in a compact IP44 frame suitable for most auxiliary spaces.
Class H VPI insulated windings give excellent thermal endurance and moisture resistance.
Dual‑axial fan design with optional water‑cooling provides flexible cooling for hot climates or DP operations.
Sealed‑for‑life bearings on frames <400 reduce routine lubrication tasks.
Compliant with IEC 60034‑18‑32 and IEEE Std 117, facilitating classification society approvals.

Weaknesses

IP44 rating offers only limited protection against water ingress; not suitable for fully wet deck installations.
Requires regular insulation resistance testing in marine environments to guard against moisture‑induced degradation.
Dual‑fan cooling can generate higher acoustic noise compared with single‑fan or oil‑cooled units.
Maximum terminal voltage 690 V may necessitate step‑up transformers on vessels that standardise on higher voltages.
AVR (UNITROL) units need careful corrosion protection and periodic calibration.

Typical Vessels: Offshore supply vesselPlatform support vesselContainer ship (auxiliary power)Cruise liner (hotel load)Naval auxiliary / replenishment ship

Decision Guide: Choose this generator when you need a reliable 200 kVA auxiliary source with robust Class H insulation, flexible cooling options and a compact IP44 footprint for vessels that operate in warm or humid climates. Avoid it if the installation demands full water‑tight protection (IP66+), higher terminal voltage without transformers, or ultra‑low noise operation.

Use Cases: Commonly installed as an auxiliary generator for hotel power, emergency supply, and DP‑support on offshore support vessels; also used to feed ship service loads on cruise ships and naval auxiliaries where a 200 kVA source is required.

Manufacturer Datasheet

Datasheet

AMG 0200-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H with VPI vacuum pressure impregnation provides excellent moisture resistance.
IP55 rated enclosure protects against dust and water spray in harsh marine environments.
Dual axial fan cooling with optional water‑cooling offers flexibility for hot or humid climates.
Sealed‑for‑life bearings (frame <400) reduce routine maintenance intervals.
Integrated UNITROL AVR series delivers precise voltage regulation and built‑in overload protection.

Weaknesses

200 kVA output may be insufficient for larger vessels that require higher auxiliary power.
Marine humidity necessitates regular insulation resistance testing to avoid dielectric degradation.
Cooling effectiveness depends on clean airflow; fouling of fans or ducts can lead to overheating.
Regreaseable bearing designs (frames ≥450) still demand periodic lubrication checks.
Single‑unit configuration provides no inherent redundancy; a failure impacts power availability.

Typical Vessels: Offshore Supply VesselPlatform Support VesselFerrySmall Container ShipCruise Ship Service

Certifications: DNV GLABS

Decision Guide: Choose if you need a robust 200 kVA auxiliary generator for medium‑size vessels operating in harsh marine conditions, where high insulation class and flexible cooling are priorities. Avoid if the vessel requires >300 kVA power, ultra‑low maintenance oil‑free solutions, or has severe space/weight constraints.

Use Cases: Commonly installed as a main auxiliary generator on offshore supply ships, platform support vessels, and ferries to supply hotel loads and emergency power; also employed in paired configurations where two units share the load for redundancy.

Manufacturer Datasheet

Datasheet

AMG 0250-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give high thermal endurance and moisture resistance.
Dual axial fans allow air‑cooling or optional water‑cooling for flexible installation conditions.
Integrated UNITROL AVR provides precise voltage regulation with under/over‑excitation limits.
Sealed‑for‑life bearing option (frame <400) reduces routine lubrication maintenance.
Standardised ABB product line ensures worldwide support and spare‑part availability.

Weaknesses

IP23 rating only protects against dripping water; not suitable for harsh deck exposure without additional shielding.
Large physical footprint (frame 400‑630 mm) may limit use on space‑constrained vessels.
VPI insulation requires regular IR/megger testing to detect moisture ingress in marine environments.
Four‑pole design limits maximum speed range compared with high‑speed alternatives.
Requires skilled personnel for AVR tuning and bearing inspection.

Typical Vessels: Platform Supply VesselOffshore Support VesselMedium‑size Container ShipFerryCruise Ship (hotel load auxiliary)

Certifications: DNVABSLloyd's Register

Decision Guide: Choose if you need a proven 250 kVA synchronous generator with high‑temperature insulation, flexible cooling options and strong ABB after‑sales support for offshore or passenger vessels. Avoid if the installation area demands a higher ingress protection rating (e.g., IP55) or if space and weight constraints favour a more compact, oil‑free or permanent‑magnet solution.

Use Cases: Typically installed as a main auxiliary generator on platform supply vessels to supply propulsion auxiliaries and hotel loads, as an emergency power source on cruise ships, or as a secondary generator on medium‑size container carriers where reliable voltage regulation and easy maintenance are critical.

Manufacturer Datasheet

Datasheet

AMG 0250-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H vacuum pressure impregnated windings give excellent moisture resistance and long life in salty atmospheres.
IP44 rating protects against splashing water, suitable for deck‑mounted installations.
Integrated UNITROL/GEN AVR provides robust voltage regulation with under/over‑excitation limits.
Dual cooling options (axial fans plus optional water‑cooling) allow operation from –20 °C to +45 °C and up to 1000 m altitude.
Modular frame sizes (400–630) enable flexible mounting on a wide range of vessel layouts.

Weaknesses

IP44 is not fully dust‑tight; additional sealing may be required in very dusty compartments.
Frames ≥450 require periodic bearing re‑greasing, increasing maintenance effort compared with sealed‑for‑life units.
Maximum terminal voltage of 400 V may necessitate a step‑up transformer for vessels standardising on higher bus voltages.
Physical footprint and weight are relatively large for small craft, limiting installation space.
Repair of VPI‑impregnated windings is costly if severe insulation damage occurs.

Typical Vessels: Medium‑size container shipsProduct tankers (up to 30 kt)Offshore supply vesselsFerries and Ro‑Ro vesselsCruise ship auxiliary power units

Decision Guide: Choose if you need a proven 250 kVA generator with robust VPI insulation, IP44 protection and flexible cooling for medium‑sized commercial ships. Avoid if your vessel requires higher bus voltage than 400 V, sealed‑for‑life bearings only, or very limited installation space.

Use Cases: Typically installed as the main auxiliary power source on vessels that operate in tropical or high‑salinity waters, providing continuous ship service power and emergency backup while tolerating temperature extremes and vibration. Frequently paired with ABB’s UNITROL AVR and integrated into automated power management systems on modern merchant ships.

Manufacturer Datasheet

Datasheet

AMG 0250-400V-50Hz-IP55

· ABB AMG Synchronous Marine Generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 housing protects against dust and water spray in harsh marine environments
Class‑H VPI‑impregnated windings give excellent thermal ageing resistance
Integrated UNITROL AVR series provides stable voltage regulation with UEL/OEL protection
Dual axial‑fan cooling (air or optional water) maintains temperature up to +45 °C ambient
Standardised frame size (≈400) allows straightforward installation and spare‑parts compatibility

Weaknesses

Fixed 400 V output may require step‑up transformers for vessels operating at higher bus voltages
IP55 is not fully watertight (e.g., not IP68), so additional sealing may be needed in extreme spray zones
Size and weight are larger than compact diesel generators used on very small craft
Maintenance of VPI insulation and sealed‑for‑life bearings demands specialised testing equipment
Performance can degrade if ambient temperature exceeds the 45 °C design limit without supplemental cooling

Typical Vessels: Medium‑size tankers (LR1–LR2)Container ships up to 8,000 TEUBulk carriers (Handymax/Supramax)Offshore supply vesselsCruise ferries and small cruise liners

Certifications: IEC 60034‑18‑32 (insulation ageing test)IEEE Std 117‑1974 (generator construction)

Decision Guide: Choose if you need a reliable 250 kVA LV auxiliary generator with high temperature tolerance and proven voltage regulation for vessels operating up to 45 °C ambient. Avoid if the ship requires higher bus voltages, ultra‑compact footprint, or fully watertight (IP68) protection without additional housing.

Use Cases: Commonly installed as the main auxiliary power source on medium‑size tankers and bulk carriers, providing electricity for cargo handling gear, hotel loads, and emergency systems. Also used on offshore supply vessels where robust cooling and corrosion resistance are critical.

Manufacturer Datasheet

Datasheet

AMG 0250-400V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) provides excellent thermal endurance in hot engine rooms.
Modular AMG series design simplifies installation and integration on various vessel layouts.
Dual‑axial fan system allows air or water cooling, giving flexibility for different ambient conditions.
Vacuum pressure impregnated (VPI) winding gives strong moisture resistance and long life.
Four‑pole construction delivers stable 60 Hz output with low vibration.

Weaknesses

IP23 enclosure protects only against solid objects >12.5 mm and water spray; not fully sealed for harsh salt‑water exposure.
Maximum output of 250 kVA may be insufficient for larger vessels that require higher auxiliary power.
Fan‑based cooling can become a maintenance point if blades accumulate salt or debris.
Moisture ingress into the winding still requires regular insulation resistance testing.
Physical footprint may demand dedicated space and proper ventilation in confined engine rooms.

Typical Vessels: Offshore supply vesselFerrySmall tankerContainer feederCruise ship (hotel load)Naval auxiliary

Decision Guide: Choose if: you need a reliable 250 kVA auxiliary generator with high‑temperature insulation, modular installation and ABB after‑sales support on small‑ to medium‑size vessels. Avoid if: the vessel requires >500 kVA power, demands a fully sealed IP55/66 enclosure, or prefers a lower‑maintenance cooling system.

Use Cases: Typically installed as the main auxiliary generator in the engine room of ferries, offshore supply ships and similar vessels to supply hotel loads, emergency power and occasional propulsion support. The dual fan/water cooling option lets operators adapt to tropical or temperate climates while maintaining temperature limits for the stator windings.

Manufacturer Datasheet

Datasheet

AMG 0250-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings provide high thermal endurance and moisture resistance.
Dual axial fans give flexible air or water cooling for a wide ambient temperature range (-20 °C to +45 °C).
Integrated UNITROL AVR (1000 series) offers robust voltage regulation with under/over‑excitation limits.
IP44 enclosure protects against splashing seawater and salt spray, suitable for harsh marine environments.
Standardised 400 V output matches common shipboard distribution systems, simplifying integration.

Weaknesses

IP44 rating is only splash‑proof; not dust‑tight (IP66) which may be required in some compartments.
250 kVA rating limits use on larger vessels that need higher auxiliary power or multiple generators.
Cooling fans can generate noticeable noise and require regular cleaning of salt deposits.
Maintenance of Class H VPI insulation demands strict moisture control during inspections.
Physical size and weight are relatively large for small workboats, affecting installation space.

Typical Vessels: Coastal cargo vesselsFerriesOffshore supply shipsWorkboatsMedium‑size yachts

Decision Guide: Choose if you need a proven 250 kVA auxiliary generator with high‑temperature insulation, flexible cooling options and integrated AVR for vessels up to medium size. Avoid if the installation requires dust‑tight (IP66) protection, higher power output, or very compact equipment.

Use Cases: Commonly installed as an auxiliary or emergency generator supplying hotel loads, navigation systems and cargo handling equipment on coastal carriers, ferries and offshore supply vessels where reliable, low‑maintenance power is critical.

Manufacturer Datasheet

Datasheet

AMG 0250-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H (VPI) provides excellent moisture resistance in harsh marine environments
IP55 sealed enclosure protects against salt spray and dust ingress
Sealed‑for‑life bearing design (frame <400) reduces routine maintenance
Dual axial fan cooling allows both air‑only and water‑cooled configurations for flexible installation
Integrated ABB UNITROL/GEN AVR options give precise voltage regulation and built‑in over/under‑excitation protection

Weaknesses

250 kVA rating may be insufficient for larger vessels requiring higher auxiliary power
Sealed bearings cannot be re‑lubricated on‑site if a failure occurs, requiring replacement
Double axial fans can generate noticeable noise in confined machinery spaces
Requires regular insulation resistance testing due to marine humidity and salt exposure
Physical size of the LV frame (400–630 mm) may limit placement in tight engine rooms

Typical Vessels: Platform supply vesselsOffshore support & accommodation shipsMedium‑size tankers (product carriers)Cruise ship auxiliary power unitsFerries and Ro‑Ro vesselsResearch or survey vessels

Certifications: DNV

Decision Guide: Choose if you need a robust 250 kVA LV generator with proven moisture resistance, low maintenance sealed bearings, and flexible cooling for medium‑size commercial or offshore vessels. Avoid if the vessel requires higher power output, ultra‑quiet operation, or re‑lubricatable bearing designs.

Use Cases: Typically installed as the main auxiliary generator on platform supply ships, as an emergency backup unit on cruise liners, or as a shore‑power source for offshore rigs where reliable, low‑maintenance power is critical.

Manufacturer Datasheet

Datasheet

AMG 0250-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H allows operation up to +180 °C ambient temperature.
Vacuum pressure impregnated (VPI) stator/rotor gives excellent moisture resistance and long life.
Dual axial‑fan cooling can be configured for air or water cooling, providing flexibility in different climate zones.
Sealed‑for‑life bearing option (frames <400) reduces routine lubrication maintenance.
Compatible with ABB UNITROL 1000 series AVR, offering precise voltage regulation and protection limits.

Weaknesses

IP23 enclosure protects only against limited water spray; not suitable for heavily splashed or flooded compartments.
Physical size and weight are considerable for small vessels where space is at a premium.
Moisture ingress can still affect insulation over time, requiring regular IR and partial‑discharge testing.
Cooling performance depends on clean airflow; fan fouling in salty environments demands frequent inspection.
AVR units are sensitive to corrosion and may need additional protective measures in harsh marine atmospheres.

Typical Vessels: Medium‑size tankersContainer ships (up to 5 000 TEU)Cruise linersOffshore supply vesselsNaval auxiliaries

Decision Guide: Choose if you need a proven 250 kVA auxiliary generator with high temperature tolerance, VPI insulation and flexible cooling for medium‑to‑large ships. Avoid if the installation area requires higher ingress protection (e.g., IP55), has severe space constraints, or if you prefer a lower‑maintenance diesel‑engine driven alternator without regular insulation testing.

Use Cases: The generator is typically installed as an auxiliary power source to supply hotel load, cargo handling equipment, and emergency power on commercial vessels. It also serves dynamic positioning systems and can act as the main standby generator on ships requiring reliable, regulated electricity in a marine environment.

Manufacturer Datasheet

Datasheet

AMG 0250-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal‑class H insulation with VPI (vacuum pressure impregnation) gives excellent moisture resistance in harsh marine environments.
Integrated UNITROL or GEN AVR options provide precise voltage regulation and built‑in under/over‑excitation protection.
IP44 enclosure protects against splashing water and dust, allowing flexible placement on deck or in engine rooms.
Proven ABB service network and spare‑parts availability worldwide.
Dual cooling capability (air‑only or air/water) adapts to vessel climate and installation constraints.

Weaknesses

Physical size and weight are significant for a 250 kVA unit, limiting use on small vessels with tight space allowances.
Requires regular bearing lubrication (sealed‑for‑life up to frame 400, greasable above) and strict moisture‑control inspections.
IP44 rating does not protect against full immersion; additional sealing may be needed in heavy spray zones.
Nominal 440 V output often requires a step‑up transformer for vessels standardising on higher bus voltages.
Initial capital cost is higher than comparable low‑cost diesel generators from lesser‑known OEMs.

Typical Vessels: Container shipMedium‑size tankerBulk carrierCruise liner (hotel load)Offshore supply vessel

Certifications: DNV GL Approved Marine GeneratorABS Approved Marine Generator

Decision Guide: Choose if you need a reliable 250 kVA auxiliary source with robust moisture‑resistant insulation, integrated AVR and worldwide ABB support, especially on vessels that can accommodate its footprint. Avoid if space is at a premium, the vessel requires higher native voltage without transformers, or maintenance resources for bearing greasing are limited.

Use Cases: Typically installed as an emergency/auxiliary generator on container ships and tankers to supply hotel services, cargo‑handling equipment, and critical control systems; also used on cruise vessels for hotel load and on offshore supply ships where a compact yet rugged power source is required.

Manufacturer Datasheet

Datasheet

AMG 0250-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) allows operation up to +180 °C ambient temperature.
IP55 sealed enclosure provides protection against salt spray and water ingress.
Integrated ABB UNITROL AVR offers precise voltage regulation and built‑in under/over‑excitation limits.
Modular frame design (LV series) simplifies installation and maintenance on a wide range of vessels.
Proven reliability with VPI vacuum pressure impregnation insulation system.

Weaknesses

Limited to 250 kVA; not suitable for large main‑propulsion applications requiring >1 MW.
Weight and footprint are higher than comparable diesel‑engine driven generators of the same rating.
Requires skilled personnel for VPI‑type winding inspection and partial‑discharge testing.
Cooling is dependent on clean airflow; fouling in marine environments can reduce performance if not maintained.

Typical Vessels: Offshore supply vesselPlatform supply vesselFerrySmall to medium tankers (product carriers)Container feeder

Certifications: IMO D‑2IEC 60034-18-32DNV GL Class approval

Decision Guide: Choose if you need a compact, high‑temperature tolerant 250 kVA generator with robust voltage regulation for auxiliary or emergency power on offshore and coastal vessels. Avoid if the vessel requires higher shaft power, has severe space/weight constraints, or lacks access to personnel trained in synchronous generator maintenance.

Use Cases: Typically installed as an auxiliary power source supplying hotel loads, cargo handling equipment, and emergency systems; also used as a standby unit for dynamic positioning support on offshore vessels where reliable voltage regulation is critical.

Manufacturer Datasheet

Datasheet

AMG 0250-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H vacuum‑pressure‑impregnated (VPI) stator/rotor insulation gives high thermal endurance and moisture resistance.
Dual axial fans with optional water‑cooling provide flexible cooling for a wide ambient temperature range (-20 °C to +45 °C).
Sealed‑for‑life bearing option (frame <400) reduces maintenance intervals on board.
Integrated ABB UNITROL 1000 series AVR offers precise voltage regulation and built‑in under/over‑excitation protection.
Standardised dimensions and mounting compatible with most marine auxiliary engine rooms.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; it is not fully splash‑proof like higher IP ratings.
Fixed 440 V output may require step‑up transformers for vessels that standardise on 690 V distribution systems.
Large physical footprint compared with newer compact diesel‑generator sets of similar rating.
Moisture ingress can still affect insulation over time; regular megger and PD testing is mandatory.
Requires dedicated AVR unit and associated wiring, adding to initial installation complexity.

Typical Vessels: Container shipBulk carrierTankerGeneral cargo vesselOffshore supply vesselCruise ship (auxiliary power)Naval auxiliary

Certifications: IEC 60034‑18‑32 compliance (insulation ageing)IEEE Std 117‑1974 certificationClassified by major marine classification societies (e.g., DNV, ABS)

Decision Guide: Choose this generator when you need a proven 250 kVA auxiliary power source with robust VPI insulation, flexible cooling options and integrated ABB AVR for vessels operating in typical marine climates. Avoid it if the installation demands a higher IP rating, tighter space constraints, or a native 690 V distribution system without additional transformers.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size merchant ships, providing continuous power for hotel loads and emergency systems; also used in offshore platform power plants and shore‑side generators where reliable, low‑maintenance operation is critical.

Manufacturer Datasheet

Datasheet

AMG 0250-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) insulation class H provides high dielectric strength and moisture resistance
Integrated UNITROL AVR offers precise voltage regulation and built‑in under/over‑excitation protection
Dual cooling options (air‑only or air/water) allow adaptation to vessel layout and climate
IP44 rating protects against splashing water and limited dust ingress, suitable for deck installations
Standardised frame sizes (400–630) simplify replacement and spare‑parts logistics

Weaknesses

Physical footprint and weight are relatively large for a 250 kVA unit, limiting installation on small vessels
IP44 does not provide full dust tightness; additional sealing may be required in very harsh environments
Requires regular moisture and insulation resistance testing to prevent humidity‑induced degradation
Output voltage (440 V) often needs step‑up transformation for higher‑voltage shipboard distribution
Maintenance of sealed‑for‑life bearings demands specialized tools and trained personnel

Typical Vessels: Container shipsTankersBulk carriersCruise linersOffshore supply vesselsNaval auxiliaries

Certifications: DNV GLABSIEC 60034-18-32 compliance

Decision Guide: Choose if you need a proven 250 kVA auxiliary generator with built‑in AVR, flexible cooling and robust insulation for medium‑size merchant vessels. Avoid if space is at a premium, higher output voltage is required without transformers, or the operating environment demands a fully dust‑tight (IP65+) enclosure.

Use Cases: Typically installed as an auxiliary power source on large commercial ships to supply hotel loads, emergency power, and shore‑power conversion; also used in retrofits where a reliable, low‑maintenance generator is required for compliance with class society standards.

Manufacturer Datasheet

Datasheet

AMG 0250-440V-60Hz-IP55

· synchronous marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High temperature class H insulation allows operation up to +180 °C ambient conditions.
IP55 enclosure provides robust protection against dust and water spray, ideal for salt‑water exposure.
Integrated UNITROL AVR (1000 series) offers precise voltage regulation and built‑in under/over‑excitation limiters.
Standard 4‑pole design delivers stable 60 Hz output compatible with US‑type vessels and shore power systems.
Modular frame sizes (400–630) simplify installation and spare‑part logistics across the ABB AMG product line.

Weaknesses

Fixed 60 Hz frequency limits use on vessels that require 50 Hz or dual‑frequency capability without a converter.
Size and weight of the LV frame (≈400‑630 mm) may be restrictive for very space‑constrained installations.
Requires regular bearing greasing or sealed‑for‑life maintenance; failure to monitor can lead to premature wear in high‑vibration applications.
AVR units are sensitive to moisture and salt corrosion, demanding strict enclosure sealing and periodic testing.
No built‑in water‑cooling option for the 250 kVA rating; relies solely on axial fans which may be less effective in extreme ambient heat.

Typical Vessels: Medium‑size tankersContainer ships (up to 5,000 TEU)Bulk carriersOffshore supply vesselsCruise ferries and passenger liners

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if: you need a proven 250 kVA auxiliary generator with class‑H insulation, IP55 protection and integrated UNITROL AVR for reliable 60 Hz hotel power on vessels operating in hot, salty environments. Avoid if: the vessel requires dual‑frequency (50/60 Hz) capability, has severe space or weight constraints, or prefers a water‑cooled design for high ambient temperatures.

Use Cases: Typically installed as an auxiliary or emergency generator to supply hotel loads, cargo handling equipment, and safety systems on medium‑size commercial ships. Frequently paired with diesel engine drives in the ship’s service‑power plant, providing redundancy for main propulsion generators and supporting shore‑power connections where required.

Manufacturer Datasheet

Datasheet

AMG 0250-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High temperature Class H insulation allows operation in hot climates up to +45 °C.
Dual axial fans provide effective air‑cooling; optional water‑cooling expands installation flexibility.
VPI (vacuum pressure impregnation) stator and rotor give excellent moisture resistance and dielectric strength.
Standardised ABB UNITROL AVR units deliver precise voltage regulation and built‑in under/over‑excitation limits.
Modular frame sizes (LV series) simplify replacement and spare‑part logistics.

Weaknesses

IP23 rating protects only against solid objects >12.5 mm and water spray; additional sealing may be required in harsh marine environments.
Maintenance intensive – regular insulation resistance, partial discharge and bearing temperature checks are mandatory.
Four‑pole design runs at 1500 rpm (50 Hz), which can increase bearing wear compared with lower‑speed units.
Not a hybrid‑ready generator; integration with battery or fuel‑cell systems requires extra conversion equipment.

Typical Vessels: Medium‑size tankersContainer shipsBulk carriersOffshore supply vesselsCruise ships

Decision Guide: Choose if you need a proven 250 kVA auxiliary generator with robust ABB engineering, flexible cooling options and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (e.g., IP55), ultra‑low maintenance, or direct integration into hybrid power systems.

Use Cases: Commonly installed as a main auxiliary generator on cargo vessels for hotel load and propulsion support, as well as in emergency power supply configurations where reliable voltage regulation is critical. The unit’s modular design also suits retrofits on existing ships requiring additional generating capacity.

Manufacturer Datasheet

Datasheet

AMG 0250-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

VPI (vacuum pressure impregnation) H‑class insulation provides high moisture resistance and long life in harsh marine environments
Dual axial fans allow flexible air or water cooling to suit vessel installation constraints
Integrated UNITROL/GEN AVR options give precise voltage regulation with under/over‑excitation protection
Sealed‑for‑life bearings (frame <400) reduce maintenance intervals
IP44 rating permits deck‑mounting while protecting against splashing saltwater

Weaknesses

IP44 does not protect against total dust ingress; additional sealing may be required in dusty compartments
Low‑voltage output (690 V) often necessitates a step‑up transformer for ships with higher bus voltages
Physical size and weight are relatively large for a 250 kVA unit, impacting space‑critical installations
Frames ≥450 require periodic bearing greasing, adding maintenance effort
Performance can degrade if cooling airflow is obstructed by salt deposits

Typical Vessels: Medium‑size tankers (LR1/2)Container ships (up to 5 000 TEU)Cruise vessels and ferriesOffshore supply vesselsHybrid propulsion auxiliary systems

Certifications: DNVABSIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven 250 kVA LV generator with robust moisture‑resistant insulation, flexible cooling and integrated AVR for auxiliary or emergency power on medium‑size vessels. Avoid if the installation demands higher bus voltage without transformers, ultra‑compact size, or dust‑tight (IP66+) protection.

Use Cases: Typically installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power; also used in hybrid propulsion schemes to provide grid support during low‑speed operation.

Manufacturer Datasheet

Datasheet

AMG 0250-690V-50Hz-IP55

· synchronous marine generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 enclosure protects against dust and water jets, suitable for harsh sea conditions.
Class H VPI‑impregnated windings give excellent thermal ageing resistance up to 180 °C.
Dual axial‑fan cooling (air or optional water) covers a wide ambient temperature range (-20 °C to +45 °C).
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation limits.
Sealed‑for‑life bearing option reduces routine maintenance for frames <400.

Weaknesses

Maximum output of 250 kVA may be insufficient for larger vessels requiring higher auxiliary power.
Winding insulation must be regularly inspected for moisture ingress in marine environments.
If non‑sealed bearings are fitted, periodic greasing and temperature monitoring are required.
Physical size and weight are relatively large for small craft or retrofits with limited space.
Cooling system performance depends on clean air pathways; fouling can lead to overheating.

Typical Vessels: Offshore supply vesselPlatform support vesselSmall container feederGeneral cargo shipProduct tanker (auxiliary power)

Decision Guide: Choose this generator when a reliable 250 kVA source with strong environmental protection, Class H insulation and integrated AVR is needed for medium‑size vessels operating in harsh marine conditions. Avoid it if the vessel’s power demand exceeds 300 kVA, space is severely limited, or the operator cannot commit to regular insulation testing and bearing monitoring.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply ships, as a secondary emergency generator on tankers and cargo vessels, or as part of a dual‑generator plant on small cruise ships where redundancy and robust protection are critical. The unit’s flexible cooling options allow deployment in both air‑cooled engine rooms and hybrid water/air cooled installations.

Manufacturer Datasheet

Datasheet

AMG 0250-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal‑grade H‑class VPI insulation gives excellent moisture resistance and long service life in harsh marine environments.
Integrated UNITROL or GEN AVR options provide precise voltage regulation and built‑in under/over‑excitation protection.
Dual cooling capability (air‑flow with axial fans, optional water‑cooling) adapts to a wide ambient temperature range (-20 °C to +45 °C).
Modular frame sizes (LV 180–630 mm) simplify installation and allow retrofits on existing vessels.
ABB’s global service network and proven track record for marine power generation.

Weaknesses

IP23 rating limits protection against dust ingress; not suitable for compartments with heavy spray or direct seawater exposure without additional shielding.
Physical footprint and weight are relatively large for a 250 kVA unit, impacting space‑critical vessels.
Requires skilled personnel for VPI insulation testing and AVR calibration; maintenance intervals can be tighter than lower‑rated generators.
Standard output voltage of 690 V may necessitate step‑up transformers on ships that operate at higher bus voltages.
Bearing lubrication options (sealed‑for‑life vs. greasable) add complexity to commissioning decisions.

Typical Vessels: Platform Supply VesselOffshore Support VesselFerrySmall Container ShipCruise Ship auxiliary power systemNaval auxiliary generator

Certifications: DNV GL Marine ClassificationABS (American Bureau of Shipping) ApprovalIEC 60034‑18‑32 insulation ageing standardIEEE Std 117‑1974

Decision Guide: Choose if: you need a reliable 250 kVA auxiliary generator with high‑grade H‑class insulation, flexible cooling options and integrated AVR for vessels operating in tropical or temperate climates where space permits an IP23 enclosure. Avoid if: the installation area is exposed to direct seawater spray, weight/space constraints are critical, or you require a higher bus voltage without additional transformers.

Use Cases: The AMG 0250‑690V‑60Hz‑IP23 is commonly installed as shipboard auxiliary power on offshore supply vessels and ferries where dependable emergency power and load‑following capability are essential. It also serves as a standby generator for cruise ships and naval auxiliaries, providing voltage regulation for hotel loads, navigation equipment, and cargo handling systems.

Manufacturer Datasheet

Datasheet

AMG 0250-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust vacuum pressure impregnation (VPI) insulation class H provides high dielectric strength and moisture resistance.
Dual cooling options (dual axial fans with optional water‑cooling) allow operation in a wide ambient temperature range (-20 °C to +45 °C).
Sealed‑for‑life bearing design (frame <400) reduces maintenance intervals on board.
IP44 rating protects against splashing water and dust, suitable for deck‑mounted installations.
Complies with IEC 60034‑18‑32 and IEEE 117 standards, facilitating class approvals.

Weaknesses

Relatively large physical footprint compared with newer compact generator sets of similar power.
IP44 does not provide full enclosure protection; additional shielding may be required in spray‑heavy zones.
Requires periodic insulation resistance testing (Megger) due to marine humidity exposure.
Maximum voltage limited to 690 V low‑voltage bus, unsuitable for vessels standardising on higher LV levels (e.g., 440 V three‑phase).
Initial capital cost is higher than comparable diesel engine generators of lower rating.

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vessel

Certifications: DNV GL class approvalABS class approvalLloyd's Register (LR) class approval

Decision Guide: Choose if you need a proven, high‑reliability 250 kVA generator with robust VPI insulation and dual cooling for harsh marine environments, and when class approvals from DNV/ABS/LR are required. Avoid if space is at a premium, a higher voltage bus system is mandated, or you prefer a fully enclosed (IP66+) unit.

Use Cases: Provides auxiliary power for hotel loads, cargo handling equipment, and emergency generators on large merchant vessels; also used in hybrid propulsion schemes where a stable AC source is required for power electronics.

Manufacturer Datasheet

Datasheet

AMG 0250-690V-60Hz-IP55

· Four‑pole synchronous marine generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal capability (Class H) allowing operation in hot climates up to +45 °C.
IP55 sealed enclosure protects against salt spray, dust and splashing water.
Flexible cooling options – dual axial fans with optional water‑cooling for improved temperature control.
Integrated ABB UNITROL AVR series provides precise voltage regulation and built‑in under/over‑excitation protection.
Widely supported by ABB service network and compatible with major classification society standards.

Weaknesses

Physical size and weight are significant; may limit installation on smaller vessels or retrofits.
Bearings on frames ≥450 require periodic greasing, increasing maintenance effort.
Only medium‑voltage output (690 V); ships requiring low‑voltage (380–440 V) distribution need additional step‑down gear.
Initial capital cost is higher than comparable non‑ABB units of the same rating.
Requires careful handling of VPI‑impregnated windings during inspection to avoid moisture ingress.

Typical Vessels: Container shipBulk carrierCrude oil tankerProduct tankerCruise linerOffshore supply vessel

Certifications: DNV GL approvalABS classificationLloyd's Register (LR) approvalIEC 60034‑18‑32 insulation ageing standardIEEE Std 117‑1974

Decision Guide: Choose this generator when you need a proven, medium‑voltage (690 V) unit with robust environmental protection, high temperature capability and ABB after‑sales support for vessels of 5 000 GT and above. Avoid it on small craft where space, weight or low‑voltage distribution constraints dominate, or when budgetary limits preclude the higher upfront cost.

Use Cases: The AMG 0250 is typically installed as a main service generator supplying hotel loads, auxiliary propulsion systems, emergency power and dynamic positioning support on large commercial vessels. It can also serve as a standby unit in dual‑generator arrangements to meet redundancy requirements under SOLAS and classification society rules.

Manufacturer Datasheet

Datasheet

AMG 0315-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H provides excellent thermal endurance for continuous operation.
Vacuum pressure impregnated (VPI) stator and rotor windings give superior moisture resistance in salty environments.
Compact IP23 enclosure fits standard engine‑room spaces while protecting against splashing water.
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation limiters.
ABB’s extensive service network and condition monitoring (LEAP) simplify maintenance.

Weaknesses

IP23 rating limits use to protected indoor spaces; not suitable for exposed outdoor installations.
Maximum output of 315 kVA may be insufficient for larger vessels requiring higher auxiliary power.
Standard cooling relies on axial fans; performance can degrade if airflow is obstructed by salt deposits.
Bearing lubrication is sealed‑for‑life only up to frame 400; larger frames require periodic greasing.
AVR units must be isolated during insulation testing, adding procedural steps.

Typical Vessels: Offshore Supply VesselPlatform Supply VesselFerrySmall Container ShipCruise Ship (auxiliary/ emergency)Coastal Tanker

Certifications: IEC 60034-18-32 (insulation aging)IEEE Std 117‑1974DNV Classification Society approvalABS approved marine generator

Decision Guide: Choose if you need a compact, high‑temperature‑rated 315 kVA auxiliary generator for indoor engine‑room use on medium‑size vessels and value ABB’s service support. Avoid if the installation requires outdoor exposure (IP55+), higher power output, or integrated variable‑speed drive capability.

Use Cases: Typically installed as a main auxiliary generator on OSVs, PSVs and ferries to supply hotel loads, deck machinery, and emergency power; also used as a standby unit on larger vessels where redundancy is required.

Manufacturer Datasheet

Datasheet

AMG 0315-400V-50Hz-IP44

· Four‑pole synchronous marine generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H (VPI vacuum pressure impregnation) gives excellent moisture resistance and long life in salty atmospheres.
IP44 enclosure protects against splashing water and dust, suitable for deck‑mount installations.
Integrated UNITROL AVR provides precise voltage regulation with under/over‑excitation limits.
Modular frame design (400 series) eases installation and future upgrades.
Sealed‑for‑life bearings on frames < 400 reduce routine maintenance.

Weaknesses

Physical footprint and weight are relatively large for a 315 kVA unit, limiting placement in tight engine rooms.
Air‑only cooling may be insufficient in very high ambient temperatures without supplemental water cooling.
Requires regular insulation resistance testing (Megger) to monitor moisture ingress.
Initial capital cost is higher than comparable low‑cost diesel generators.
Vibration monitoring and bearing temperature checks are mandatory for frames ≥ 450.

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (auxiliary power)Offshore supply vessel

Certifications: IMO D‑2IEC 60034‑18‑32 (insulation ageing)DNV GL Marine CertificationABS Classification

Decision Guide: Choose if you need a reliable 300‑plus kVA auxiliary generator with proven moisture‑resistant insulation, IP44 deck protection and integrated AVR for vessels operating in harsh marine climates. Avoid if space or weight constraints are critical, or if a lower‑cost, air‑cooled unit without VPI insulation meets the operational profile.

Use Cases: Commonly installed as an auxiliary power source on medium‑to‑large merchant ships to supply hotel loads and emergency power; also used in offshore support vessels where robust protection against salt spray and vibration is required. The generator can operate continuously at rated load or provide peak shaving during high‑demand periods.

Manufacturer Datasheet

Datasheet

AMG 0315-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give high thermal endurance and moisture resistance.
IP55 sealed enclosure protects against dust and water spray in harsh sea environments.
Dual‑axial fan cooling can be configured for air or water, allowing flexible installation.
Sealed‑for‑life bearings (frame <400) reduce routine lubrication maintenance.
Broad LV power range (14–5000 kVA) means the same platform can be scaled to larger units if needed.

Weaknesses

Standard model is limited to 50 Hz operation; vessels requiring 60 Hz must select a different variant.
Large physical footprint and weight typical of frame‑400 generators may restrict placement on smaller hulls.
AVR (UNITROL) units require specialised service tools and periodic moisture checks, adding maintenance overhead.
Initial capital cost is higher than basic low‑cost alternators due to high‑grade insulation and IP rating.
Bearing temperature monitoring is mandatory for frames ≥450, increasing sensor and inspection requirements.

Typical Vessels: TankerContainer shipBulk carrierRo‑Ro vesselOffshore supply vesselCruise liner

Decision Guide: Choose if you need a robust 315 kVA auxiliary generator with high insulation class, IP55 protection and flexible cooling for vessels operating in corrosive marine climates. Avoid if the ship requires 60 Hz power, has severe space/weight constraints, or if budget limits preclude a premium‑grade unit.

Use Cases: Commonly installed as an auxiliary/main‑generator on medium‑size merchant ships (20–30 000 DWT) to supply hotel load, cargo handling equipment and emergency power. Also used on offshore support vessels where reliable, moisture‑tolerant generation is critical.

Manufacturer Datasheet

Datasheet

AMG 0315-400V-60Hz-IP23

· low‑voltage marine synchronous generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H insulation allows operation up to 180 °C ambient, extending service life in hot climates.
Dual axial‑fan cooling provides flexible air or water‑cooled configurations for varied installation spaces.
Integrated ABB UNITROL/GEN AVR options give precise voltage regulation and built‑in under/over‑excitation protection.
Sealed‑for‑life bearing design (frame <400) reduces routine lubrication maintenance.
Fully compliant with IEC 60034‑18‑32 and IEEE Std 117, facilitating class approvals from DNV GL and ABS.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; it is not splash‑proof for heavy spray zones.
Fixed 400 V output may require step‑up transformers on vessels that standardise on higher bus voltages (e.g., 6.3 kV).
Physical footprint of a frame‑400 generator can be large for small vessel engine rooms.
VPI (vacuum pressure impregnation) insulation requires specialised megger and partial‑discharge testing for condition monitoring.
Fan noise levels can be significant unless additional acoustic treatment is installed.

Typical Vessels: Cruise shipRo‑Ro ferryOffshore supply vesselContainer ship (auxiliary power)Product tanker

Certifications: DNV GL Marine Generator ApprovalABS Marine ClassificationIEC 60034‑18‑32IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 300–500 kVA low‑voltage auxiliary generator with high temperature tolerance, flexible cooling options and proven ABB AVR integration. Avoid if the installation requires higher bus voltages, splash‑proof enclosures (IP≥44), or very tight space constraints where a smaller frame is mandatory.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads on cruise ships, provide emergency generation on tankers and bulk carriers, support propulsion auxiliaries on offshore supply vessels, and serve as redundant generators on large container ships.

Manufacturer Datasheet

Datasheet

AMG 0315-400V-60Hz-IP44

· synchronous marine generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H and VPI vacuum‑pressure impregnation gives excellent moisture resistance.
Sealed‑for‑life bearing design (frame <400) reduces routine maintenance intervals.
Integrated UNITROL AVR provides stable voltage regulation and built‑in under/over‑excitation protection.
Dual cooling options (double axial fans with optional water‑air spray) suit a wide ambient temperature range (-20 °C to +45 °C).
Complies with IEC 60034‑18‑32 and DNV class requirements, facilitating classification approval.

Weaknesses

IP44 rating only protects against splashing water; not suitable for areas prone to heavy spray or immersion.
Fixed 400 V output may require step‑up transformers on vessels that operate at higher bus voltages.
Fan‑driven air cooling can be less efficient in very hot, high‑humidity climates, potentially limiting continuous rating.
Size and weight of a 315 kVA LV generator limit installation on small craft or space‑constrained engine rooms.
Insulation monitoring and regular megger testing are mandatory to detect moisture ingress, adding inspection workload.

Typical Vessels: Offshore supply vesselPlatform support vesselMedium‑size tankerContainer feederCruise ship auxiliary power systemNaval auxiliary generator

Certifications: IEC 60034-18-32DNVIMO D-2

Decision Guide: Choose if you need a reliable 315 kVA LV auxiliary generator with sealed‑for‑life bearings, integrated AVR and proven IEC/DNV compliance for medium‑size vessels operating in typical marine environments. Avoid if the installation requires higher bus voltage, ultra‑compact footprint, or protection beyond IP44 (e.g., full immersion zones).

Use Cases: Commonly installed as the main auxiliary generator on offshore support ships, as a standby emergency power source on container and tanker vessels, and in cruise ship engine rooms where dependable low‑voltage generation and minimal maintenance are priorities.

Manufacturer Datasheet

Datasheet

AMG 0315-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H vacuum pressure impregnated (VPI) insulation gives high thermal endurance and moisture resistance.
IP55 sealed enclosure protects against salt spray and dust while allowing adequate ventilation.
Dual axial fans provide flexible air‑cooling; water‑cooling can be added for hot climates.
Sealed‑for‑life bearing option reduces maintenance intervals on frames < 400.
Wide operating temperature range (‑20 °C to +45 °C) and altitude capability up to 1 000 m.

Weaknesses

Rated at only 315 kVA – may be undersized for high‑power vessels or future load growth.
Class‑H insulation, while robust, is sensitive to moisture ingress; requires strict humidity monitoring.
IP55 rating does not allow full submersion; unsuitable for applications needing IP68 protection.
External cooling water system must be installed for extreme ambient temperatures, adding complexity.
Limited frame size (400) restricts upgrade path to higher power without replacing the unit.

Typical Vessels: Platform supply vesselOffshore support vesselDP‑class workboatMedium‑size tanker or product carrierContainer feeder

Decision Guide: Choose if you need a compact, high‑temperature‑rated generator around 300 kVA with robust VPI insulation and IP55 protection for offshore support or DP vessels. Avoid if the vessel requires higher continuous power, submersible (IP68) protection, or minimal moisture‑sensitivity maintenance.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply ships, dynamic positioning workboats, and medium‑size tankers where space is limited but reliable, weather‑proof power is essential. Often paired with an external water‑cooling loop in tropical regions to keep winding temperatures within limits.

Manufacturer Datasheet

Datasheet

AMG 0315-440V-50Hz-IP23

· synchronous marine generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H vacuum pressure impregnated (VPI) stator and rotor provide excellent thermal endurance and moisture resistance.
Integrated UNITROL or GEN AVR options give precise voltage regulation and built‑in under/over‑excitation protection.
Dual cooling capability – axial fans for air cooling and optional water‑cooling – allows operation in a wide ambient temperature range (‑20 °C to +45 °C).
Modular frame sizes (LV standard series) simplify installation and spare‑part logistics across ABB’s product line.
Proven ABB marine pedigree with extensive field service experience and condition‑monitoring tools (ABB Ability LEAP).

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; the unit is not water‑tight and needs additional splash protection in heavy spray zones.
440 V output may require step‑up transformers on vessels that standardise on 690 V busbars, adding cost and space.
Physical footprint and weight are larger than comparable diesel generators of the same kVA rating, impacting tight engine‑room layouts.
Maintenance of VPI insulation and bearing greasing requires skilled personnel and regular condition monitoring.
Ventilator blades can accumulate salt deposits; cleaning intervals are higher than for fully sealed units.

Typical Vessels: TankersContainer shipsBulk carriersOffshore supply vesselsCruise ferries

Certifications: DNV GL Marine ClassificationABS Marine ClassificationIMO SOLAS Chapter II‑1 compliance (electrical generation)IEC 60034‑18‑32 (insulation ageing)

Decision Guide: Choose if you need a reliable 315 kVA synchronous generator with high‑temperature class‑H insulation, flexible cooling options and integrated AVR for vessels that can accommodate an IP23 enclosure or provide additional splash protection. Avoid if the installation environment is continuously exposed to heavy sea spray without extra sealing, if space/weight constraints are critical, or if a higher bus voltage (e.g., 690 V) is required without a transformer.

Use Cases: Primary auxiliary power generation for medium‑size merchant vessels, providing shipboard electricity for hotel loads and cargo handling equipment; also used as an emergency generator in compliance with SOLAS requirements. The unit can be coupled to shore‑power conversion systems or operated in parallel with other generators for load sharing on larger ships.

Manufacturer Datasheet

Datasheet

AMG 0315-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H with VPI (vacuum pressure impregnation) provides excellent moisture resistance in harsh marine environments.
Dual axial fans allow flexible air or water cooling and maintain temperature stability from –20 °C to +45 °C up to 1000 m altitude.
Sealed‑for‑life bearing option (frame <400) reduces maintenance intervals compared with greased bearings.
Compliant with IEC 60034‑18‑32 and IEEE Std 117, facilitating class approvals and insurance acceptance.
Modular frame sizes (LV 180‑630 mm) enable installation in confined engine rooms.

Weaknesses

IP44 rating only protects against splashing water; not suitable for dusty or fully sealed compartments where IP66 is required.
Fixed 440 V output may require additional step‑up transformers for vessels standardising on higher bus voltages.
Requires regular insulation resistance and partial discharge testing to monitor moisture ingress in the stator windings.
Size and weight are comparable to other 300 kVA generators, limiting use on very small craft with strict space constraints.
AVR (UNITROL) units need careful corrosion protection; failure can lead to voltage regulation issues.

Typical Vessels: Product TankerContainer FeederRo‑Ro / FerryOffshore Supply VesselCruise Ship Auxiliary Power

Decision Guide: Choose if: you need a reliable 300 kVA auxiliary generator with high insulation class, robust cooling options and sealed‑for‑life bearings for medium‑size vessels operating in salty, humid environments. Avoid if: the installation requires dust‑tight (IP66) protection, higher bus voltage than 440 V without additional transformers, or strict weight/space limits on small craft.

Use Cases: Typically installed as the main auxiliary generator on product tankers and offshore supply vessels, providing ship service power for hotel loads, cargo handling equipment, and emergency backup. Also used as a standby unit on cruise ships where redundancy and rapid start‑up are critical.

Manufacturer Datasheet

Datasheet

AMG 0315-440V-50Hz-IP55

· synchronous marine generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 sealed enclosure resists salt spray and dust.
Class H insulation allows continuous operation up to +180 °C ambient.
Integrated ABB UNITROL/GEN AVR provides precise voltage regulation and protection limits (UEL/OEL).
Modular frame design compatible with both air‑ and water‑cooled configurations.
Sealed‑for‑life bearings on frames <400 reduce routine lubrication requirements.

Weaknesses

Physical size and weight are significant for vessels with limited machinery space.
Only 50 Hz output; not directly suitable for regions or equipment requiring 60 Hz without a frequency converter.
Requires skilled personnel for VPI insulation inspection and AVR troubleshooting.
Initial capital cost is higher than many conventional diesel generator sets of similar rating.
Cooling performance depends on clean airflow; fouled fans can quickly degrade output.

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vessel

Certifications: DNVABSIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable mid‑size auxiliary power source with high temperature tolerance, IP55 protection and integrated ABB AVR on vessels that already use ABB electrical systems. Avoid if space/weight are at a premium, the ship operates on 60 Hz mains, or maintenance expertise for VPI insulation is not available.

Use Cases: Provides primary hotel‑load power, cargo‑handling equipment supply, emergency generator duty and support for dynamic positioning auxiliaries on medium to large commercial vessels operating in harsh marine environments.

Manufacturer Datasheet

Datasheet

AMG 0315-440V-60Hz-IP23

· ABB AMG synchronous marine generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) provides excellent thermal endurance in hot marine environments.
Compact IP23 enclosure suitable for typical engine‑room layouts while still offering protection against solid foreign objects.
Standard ABB UNITROL AVR integration enables precise voltage regulation and under/over‑excitation limiting.
Dual cooling options (air‑only or air/water) give flexibility for vessels with limited coolant supply.
Proven ABB reliability and worldwide service network simplifies maintenance and spare‑part logistics.

Weaknesses

IP23 rating does not protect against water ingress; additional sealing may be required in very wet compartments.
Rated at only 315 kVA, it may be undersized for larger tankers or cruise ships that need >500 kVA auxiliary power.
Moisture‑sensitive VPI insulation demands regular IR and partial‑discharge testing to avoid premature aging.
Cooling performance can drop if air flow is obstructed by salt deposits; routine cleaning is mandatory.
Optional AVR adds complexity and may require separate spare parts inventory.

Typical Vessels: Offshore supply vesselPlatform support vesselMedium‑size tanker (product carriers)Container feederResearch or survey ship

Decision Guide: Choose if you need a reliable 300 kVA auxiliary generator with high‑temperature insulation, ABB service backing, and flexibility in cooling method. Avoid if the installation requires a water‑tight (IP68) enclosure, higher power output, or minimal maintenance intervals for insulation testing.

Use Cases: The unit is commonly installed as an auxiliary or emergency generator on medium‑sized commercial vessels, providing shipboard electricity for hotel loads, cargo handling equipment, and safety systems while the main propulsion plant is offline. It also serves in load‑sharing schemes with larger diesel generators on offshore platforms.

Manufacturer Datasheet

Datasheet

AMG 0315-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) tolerates elevated operating temperatures and reduces risk of winding failure.
IP44 rating provides solid protection against splashing water and dust in typical marine environments.
Dual‑axial fan cooling with optional water‑cooling gives flexibility for varied ambient conditions.
Vacuum pressure impregnated (VPI) stator/rotor construction enhances moisture resistance and longevity.
Sealed‑for‑life bearing option simplifies maintenance on frames <400.

Weaknesses

IP44 is not fully watertight; deeper immersion or heavy spray areas may require additional protection.
Fixed 440 V output may need step‑up transformers for vessels standardized on higher bus voltages (e.g., 6.3 kV).
Physical footprint of frame 400–630 can be large for small craft with limited engine‑room space.
Cooling performance depends on clean airflow; salt‑laden fouling can degrade fan efficiency if not regularly cleaned.
Requires periodic insulation resistance and moisture checks to prevent VPI degradation in harsh sea air.

Typical Vessels: Product tankerMedium‑size bulk carrierOffshore supply vessel (OSV)Cruise ship auxiliary power unitNaval auxiliary or support ship

Certifications: IEC 60034‑18‑32 (insulation ageing test)IEEE Std 117‑1974 (generator construction)

Decision Guide: Choose this generator when you need a reliable 300–350 kVA auxiliary source with high temperature tolerance, modular cooling options and proven VPI insulation for vessels that operate in standard marine environments. Avoid it on ships requiring fully sealed (IP66+) equipment, higher bus voltages without step‑up gear, or where space constraints preclude the frame size.

Use Cases: Commonly installed as main auxiliary generators on medium‑size tankers and offshore supply vessels, as emergency power units on cruise ships, or as secondary gensets for dynamic positioning support where robust, low‑maintenance operation is critical.

Manufacturer Datasheet

Datasheet

AMG 0315-440V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings provide high thermal endurance for harsh sea conditions
IP55 sealed enclosure protects against dust and splashing seawater
Dual‑mode cooling (air or water) allows installation flexibility on various vessel layouts
Integrated UNITROL 1000/GEN AVR series delivers precise voltage regulation and built‑in over/under‑excitation limits
Standardised bearing options (sealed‑for‑life or greasable) reduce maintenance intervals

Weaknesses

Physical size and weight are relatively large for a 315 kVA unit, impacting tight engine‑room layouts
Requires regular insulation resistance and partial‑discharge testing in marine humidity environments
AVR units need periodic calibration; corrosion of contacts can affect voltage regulation if not inspected
Fixed 60 Hz frequency – not suitable where dual 50/60 Hz capability is required
Higher initial capital cost compared with lower‑specification generators

Typical Vessels: Medium‑size tankers (LR1/LR2)Container ships (up to 5,000 TEU)General cargo & bulk carriersOffshore supply vessels (OSV)Ferries and cruise ship hotel‑load auxiliaries

Certifications: IEC 60034‑18‑32 (insulation ageing)DNV GL Type ApprovalABS ClassificationLloyd’s Register Certification

Decision Guide: Choose if you need a robust 315 kVA auxiliary generator with high insulation class, IP55 protection and flexible cooling for medium‑size commercial vessels. Avoid if space/weight are at a premium, dual‑frequency operation is required, or budget constraints favour a lower‑spec unit.

Use Cases: Commonly installed as an auxiliary power source on tankers and container ships to supply hotel loads, emergency power, and dynamic positioning support on offshore vessels; also used on ferries and cruise ships where reliable, low‑maintenance generation is critical.

Manufacturer Datasheet

Datasheet

AMG 0315-690V-50Hz-IP23

· Low‑Voltage Synchronous Marine Generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H VPI insulation gives high thermal endurance and moisture resistance.
Dual axial fans allow flexible air or water cooling for a wide ambient temperature range (-20 °C to +45 °C).
IP23 enclosure protects against splashing and dust in typical marine environments.
Sealed‑for‑life bearing option reduces routine maintenance intervals.
ABB’s global service network ensures ready availability of spares and technical support.

Weaknesses

IP23 rating does not protect against heavy water ingress; additional shielding may be required in harsh spray zones.
Fixed 690 V output limits direct integration with high‑voltage distribution systems without a step‑up transformer.
Physical size and weight of a 315 kVA unit can be restrictive on space‑constrained installations.
Moisture sensitivity of the windings necessitates regular insulation resistance testing.
Not rated for ambient temperatures below –20 °C or above +45 °C.

Typical Vessels: TankerContainer ShipBulk CarrierCruise ShipOffshore Supply VesselFerry

Decision Guide: Choose if you need a proven 300‑350 kVA low‑voltage auxiliary generator with robust class‑H insulation, flexible cooling options and strong ABB after‑sales support. Avoid if the installation requires higher voltage output, extremely compact space, or operation outside the –20 °C to +45 °C ambient range.

Use Cases: Commonly installed as a main auxiliary power source for hotel loads, cargo handling equipment, and emergency power on large commercial vessels and offshore platforms, where reliable 690 V supply and easy maintenance are priorities.

Manufacturer Datasheet

Datasheet

AMG 0315-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) with vacuum pressure impregnation gives excellent moisture resistance and long life.
Dual axial fans allow flexible air or water cooling, supporting operation from –20 °C to +45 °C and up to 1000 m altitude.
Sealed‑for‑life bearing option reduces maintenance intervals for frames <400; re‑greasable bearings available for larger frames.
Integrated UNITROL/GEN AVR families provide precise voltage regulation, under/over‑excitation protection and easy tuning.
IP44 enclosure meets marine ingress protection requirements while allowing straightforward access for inspection.

Weaknesses

IP44 rating provides limited dust protection; additional sealing may be required in high‑spray areas.
Physical footprint is sizable for a 315 kVA unit, potentially limiting installation on vessels with tight engine‑room space.
Requires careful moisture control during insulation testing; humidity can affect IR test results and long‑term reliability.
Complex cooling system (air or water) adds auxiliary piping and maintenance tasks compared to self‑cooled units.
Higher initial capital cost than smaller, less robust generators.

Typical Vessels: Offshore Supply VesselsPlatform Supply VesselsDynamic Positioning (DP) vesselsCruise shipsContainer ships (auxiliary power)Tankers (hotel and emergency power)

Decision Guide: Choose this generator when you need a reliable 300‑350 kVA auxiliary source with robust H‑class insulation, flexible cooling options, and integrated AVR for precise voltage control on vessels that can accommodate its size. Avoid it if space is at a premium, the installation environment demands higher IP protection (e.g., IP65), or the vessel operates primarily in low‑temperature climates where smaller, fully sealed units are preferred.

Use Cases: Commonly installed as the main auxiliary generator for hotel loads, emergency power supply, DP thruster drive support, cargo refrigeration compressors, and shore‑power conversion on offshore and commercial vessels requiring dependable medium‑size generation capacity.

Manufacturer Datasheet

Datasheet

AMG 0315-690V-50Hz-IP55

· low‑voltage synchronous generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H (vacuum pressure impregnated) gives excellent thermal endurance and moisture resistance.
IP55 enclosure protects against dust ingress and water jets, suitable for exposed deck installations.
Dual axial fans provide flexible air‑cooling; optional water‑cooling available for high ambient temperatures.
Integrated UNITROL 1000 or GEN06/GEN08 AVR offers precise voltage regulation with under/over‑excitation limits.
Sealed‑for‑life bearing option (frame <400) reduces routine maintenance on smaller frames.

Weaknesses

Limited to low‑voltage range; not suitable for vessels requiring >5 MW or high‑voltage generators.
VPI insulation, while robust, still requires periodic megger and partial‑discharge testing in salty environments.
Dual‑fan cooling may be less effective on very hot, humid routes without supplemental water‑cooling.
Weight and footprint are larger than compact diesel gensets of comparable rating, impacting space‑critical vessels.
AVR units add complexity; specialist service support is required for troubleshooting or firmware updates.

Typical Vessels: Platform Supply VesselOffshore Support VesselFerry / Ro‑RoSmall Cruise ShipContainer Feeder

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a robust 300‑350 kVA LV generator with high moisture resistance, IP55 protection and built‑in advanced AVR for vessels operating in harsh sea conditions. Avoid if the vessel requires higher power (>5 MW), high‑voltage output, or ultra‑compact weight/space solutions.

Use Cases: Commonly installed on offshore supply ships and ferries to provide auxiliary power for hotel loads, cargo handling equipment, and emergency generators. The model’s modular frame and sealed bearings make it attractive for vessels with limited maintenance windows and exposure to spray zones.

Manufacturer Datasheet

Datasheet

AMG 0315-690V-60Hz-IP23

· synchronous marine generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI (vacuum pressure impregnation) insulation gives high thermal endurance and moisture resistance.
Dual‑axial fan arrangement allows flexible air or water cooling to suit vessel climate conditions.
Integrated ABB UNITROL/GEN AVR options provide precise voltage regulation and built‑in under/over‑excitation limits.
IP23 rating protects against solid objects >12.5 mm and spray, suitable for most engine‑room environments.
Standardised frame sizes (400–630) simplify replacement and spare‑parts logistics within ABB’s global service network.

Weaknesses

IP23 is not fully sealed; additional protective measures may be required in highly corrosive or splash‑prone areas.
Only 690 V, 60 Hz output – vessels operating on 50 Hz or higher voltage busbars will need a transformer or different model.
Physical footprint and weight are relatively large for a 315 kVA unit, limiting installation in tight engine rooms.
Moisture‑sensitive VPI insulation demands regular IR testing and partial‑discharge monitoring to avoid premature aging.
Requires dedicated AVR (UNITROL/GEN) which adds complexity to commissioning and spare‑part inventory.

Typical Vessels: Offshore supply vesselPlatform support vesselCruise shipContainer ship (auxiliary power)Tanker (hotel load generator)

Certifications: IEC 60034-18-32IEEE Std 117‑1974

Decision Guide: Choose if you need a proven 315 kVA auxiliary generator with robust class H insulation, flexible cooling options and ABB’s worldwide support. Avoid if the installation requires fully sealed IP66 protection, operates on 50 Hz or higher bus voltage, or space constraints preclude the standard frame size.

Use Cases: Typically installed as a main auxiliary or emergency power source to supply hotel loads, cargo handling equipment, and DP‑system electronics on offshore and deep‑sea vessels. Frequently paired with ABB’s UNITROL AVR for stable voltage during load transients.

Manufacturer Datasheet

Datasheet

AMG 0315-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H with vacuum pressure impregnation (VPI) gives excellent moisture resistance in harsh sea environments.
Integrated UNITROL/GEN AVR provides precise voltage regulation, under‑/over‑excitation limiting and easy field adjustment.
Dual cooling options (axial fans + optional water‑cooling) allow operation from –20 °C to +45 °C and up to 1000 m altitude.
Sealed‑for‑life bearing design (frame <400) reduces maintenance intervals on typical merchant vessels.
Standardised frame sizes (LV 180‑630) simplify spare‑parts logistics across ABB’s marine generator product line.

Weaknesses

IP44 rating protects against splashing water only; additional enclosure may be required for dusty or heavily sprayed areas.
Maximum terminal voltage of 690 V limits direct integration with high‑voltage shipboard distribution without step‑up transformers.
Large physical footprint compared with newer compact permanent‑magnet generators, affecting space‑constrained vessels.
Moisture‑sensitive VPI insulation still requires regular IR and partial‑discharge testing to avoid hidden degradation.
Water‑cooling variant adds complexity (pumps, heat exchangers) and potential corrosion points.

Typical Vessels: Container shipBulk carrierProduct tankerCruise linerOffshore supply vesselNaval auxiliary

Certifications: DNV GL Class approval for marine generatorsABS (American Bureau of Shipping) type approvalLloyd's Register classification approvalIEC 60034‑18‑32 compliance for insulation ageing

Decision Guide: Choose if you need a proven, high‑power low‑voltage generator with robust H‑class VPI insulation, integrated AVR and flexible cooling for vessels up to 10 MW total plant output. Avoid if space is at a premium, the ship uses a high‑voltage distribution system, or you require dust‑tight (IP65+) protection without additional enclosures.

Use Cases: The AMG 0315 series is typically installed as the main auxiliary generator on medium‑size merchant ships and cruise vessels, supplying emergency and hotel power where reliable voltage regulation and resistance to salt‑water corrosion are critical. It also serves as a standby unit for offshore platforms that operate in tropical or high‑altitude environments.

Manufacturer Datasheet

Datasheet

AMG 0315-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H insulation allows operation up to +180 °C ambient temperature, extending service life in hot climates.
IP55 enclosure provides solid protection against dust and water jets, ideal for salt‑water exposure.
Dual axial‑fan cooling with optional water‑cooling gives flexible thermal management for varied installation spaces.
Integrated UNITROL AVR (U/Hz, UEL/OEL) delivers precise voltage regulation and overload protection.
ABB global service network and proven track record simplify spare‑parts logistics and maintenance.

Weaknesses

Physical footprint and weight are larger than low‑power alternatives, requiring ample machinery space.
VPI (Vacuum Pressure Impregnation) insulation demands strict moisture control during inspection; failure to keep dry can accelerate aging.
Limited to 690 V bus voltage – not suitable for vessels standardising on higher medium‑voltage platforms (>6 kV).
Higher initial capital cost compared with generic off‑the‑shelf generators of similar rating.

Typical Vessels: Offshore Supply Vessel (OSV)Platform Supply Vessel (PSV)Cruise Ship auxiliary power plantContainer ship service generatorProduct tanker with medium‑size electrical load

Certifications: IEC 60034-18-32 (insulation ageing test)IEEE Std 117‑1974 (generator construction)DNV GL Type Approval for marine generators

Decision Guide: Choose if you need a reliable 300‑350 kVA generator that can tolerate high ambient temperatures, offers IP55 protection and flexible cooling, and you have access to ABB service support. Avoid if the vessel requires higher voltage (≥6 kV) or a more compact low‑cost unit for <200 kVA output.

Use Cases: Typically installed as part of the main auxiliary power plant on offshore supply vessels, cruise ships, and medium‑size cargo carriers where continuous 315 kVA generation is required for hotel loads, cargo handling equipment, and emergency power. The generator’s robust enclosure and cooling options make it well suited to operations in tropical or high‑humidity regions.

Manufacturer Datasheet

Datasheet

AMG 0355-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) with vacuum pressure impregnation gives excellent moisture resistance and long life.
Dual axial fan design provides flexible air‑ or water‑cooled operation over a wide ambient temperature range (-20 °C to +45 °C).
Integrated UNITROL/GEN AVR system offers built‑in voltage, frequency and excitation limits for stable grid support.
Sealed‑for‑life bearing option (frame <400) reduces maintenance intervals on board.
Modular frame size (400 series) fits standard marine engine rooms and allows straightforward installation.

Weaknesses

IP23 enclosure protects only against solid objects >12.5 mm; it is not water‑tight, limiting use in very wet or spray‑prone locations.
Fixed 400 V output may require step‑up transformers for vessels that standardise on higher bus voltages (e.g., 660 V).
Maximum continuous rating of 355 kVA may be insufficient for larger DP‑oriented vessels requiring >500 kVA auxiliary power.
Bearing lubrication is sealed‑for‑life only up to frame 400; larger frames need periodic greasing, adding maintenance effort.

Typical Vessels: Medium‑size tankersOffshore supply vessels (OSV)Container feedersCruise ship auxiliary power unitsMultipurpose cargo ships

Decision Guide: Choose if: you need a reliable 355 kVA auxiliary generator with robust H‑class insulation, integrated AVR and flexible cooling for vessels operating in temperate climates. Avoid if: the installation requires water‑tight (IP≥55) enclosures, higher bus voltages, or power ratings above 500 kVA.

Use Cases: Typically installed as an emergency/auxiliary generator in engine rooms to supply shipboard electrical loads during main‑engine outages, to support dynamic positioning systems on offshore vessels, or as a standby unit for cruise ships and container feeders where space and weight constraints favour the compact 400‑series frame.

Manufacturer Datasheet

Datasheet

AMG 0355-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal rating (Class H) allows operation in hot marine climates.
Robust IP44 enclosure protects against splashing water and salt spray typical of shipboard environments.
Vacuum‑pressure‑impregnated (VPI) windings give excellent moisture resistance and long insulation life.
Integrated UNITROL/GEN AVR options provide built‑in voltage, under‑excitation and over‑excitation protection.
Sealed‑for‑life bearings on frames <400 kN reduce routine lubrication requirements.

Weaknesses

IP44 rating does not protect against full dust ingress; additional sealing may be required in very dusty compartments.
Requires regular insulation resistance and partial‑discharge testing to monitor moisture ingress in the VPI system.
Physical size and weight are relatively large for a 355 kVA unit, limiting installation in tight engine rooms.
Only rated for 50 Hz operation; not suitable for vessels that standardise on 60 Hz electrical systems.
Advanced AVR options add complexity to commissioning and spare‑part logistics.

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise liner (auxiliary power)Offshore supply vessel

Decision Guide: Choose if you need a proven 355 kVA auxiliary generator with high‑temperature insulation, IP44 protection and ABB’s global service network. Avoid if the installation space is severely constrained, the ship operates on a 60 Hz system, or you require a fully dust‑tight (IP65+) enclosure.

Use Cases: Commonly installed as an auxiliary power source for main‑engine start‑up, hotel loads, and emergency generation on medium‑size merchant vessels. Also used in dedicated generator rooms where robust protection against salt spray and high ambient temperatures is required.

Manufacturer Datasheet

Datasheet

AMG 0355-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High environmental protection (IP55) suitable for harsh salt‑water conditions
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Dual axial fans allow flexible air or water cooling, improving installation flexibility
Sealed‑for‑life bearing option reduces maintenance intervals on frames <400
Compact frame size (LV series) fits vessels with limited engine‑room space

Weaknesses

Limited to 355 kVA; not suitable for high‑power main‑propulsion or large cargo ships
Only 50 Hz rating in the listed configuration – may require a separate 60 Hz variant for some fleets
VPI insulation, while robust, demands strict moisture control during installation and service
No integrated AVR; an external ABB UNITROL unit is required for voltage regulation
Weight and dimensions are not publicly disclosed, requiring detailed OEM data before layout planning

Typical Vessels: Offshore supply vesselCoastal tankerFerryResearch / survey shipSmall container or bulk carrier (up to ~5 000 kW total electric power)

Certifications: IEC 60034-18-32

Decision Guide: Choose if: you need a compact, highly protected 300‑400 kVA generator for a vessel operating in corrosive marine environments and can accommodate an external AVR. Avoid if: the ship requires >500 kVA main generation, a built‑in AVR solution, or a guaranteed 60 Hz supply without a separate model change.

Use Cases: Typically installed as auxiliary power on offshore support vessels, ferries, and coastal tankers where space is limited and reliability under salt spray is critical. The generator supplies hotel loads, cargo handling equipment, and emergency power when coupled with ABB’s UNITROL AVR system.

Manufacturer Datasheet

Datasheet

AMG 0355-400V-60Hz-IP23

· ABB AMG synchronous generator

Power (kVA)

355

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI‑impregnated windings give excellent thermal and moisture resistance for harsh sea conditions.
Double axial fans provide flexible air or water cooling options to match vessel installation constraints.
Integrated UNITROL AVR (1000 series) delivers precise voltage, frequency and over/under‑excitation protection.
Modular LV frame sizes (400–630) simplify spares management and allow retrofits on a wide range of ships.
IP23 enclosure protects against spray and dust while keeping the unit compact for typical auxiliary spaces.

Weaknesses

IP23 is not fully sealed; prolonged exposure to heavy salt spray may require additional protective measures.
Larger frame versions use greasable bearings, increasing routine maintenance compared with sealed‑for‑life units.
Cooling performance depends on unobstructed airflow; fouling of fan blades can quickly raise winding temperatures.
Fixed 400 V output may need step‑up transformers for vessels standardized on higher bus voltages (e.g., 660 V).
Physical dimensions and weight are not published in the public data, making space planning less straightforward.

Typical Vessels: Container ShipBulk CarrierTankerGeneral Cargo VesselOffshore Supply VesselCruise Ship

Decision Guide: Choose if you need a mid‑size (≈350 kVA) auxiliary generator with robust Class H insulation, flexible air/water cooling and integrated AVR for vessels operating in warm to moderate climates. Avoid if the installation requires a fully sealed IP55/IP65 unit, minimal maintenance bearings, or higher nominal bus voltages without additional transformers.

Use Cases: Commonly installed as an auxiliary generator on medium‑to‑large merchant ships to supply hotel loads, emergency power and support diesel engine start‑up. The unit is also used in standby/emergency power arrangements where reliable voltage regulation and resistance to marine humidity are critical.

Manufacturer Datasheet

Datasheet

AMG 0355-400V-60Hz-IP44

· low‑voltage marine synchronous generator

Power (kVA)

355

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) insulation class H for high thermal endurance in salty environments
Dual axial fans allow flexible air or water cooling, maintaining temperature up to +45 °C ambient
IP44 enclosure provides protection against splashing and limited ingress of dust/salt spray
Sealed‑for‑life bearings on frames <400 reduce maintenance intervals
Compliant with IEC 60034‑18‑32 and IEEE Std 117‑1974, facilitating classification society approval

Weaknesses

IP44 rating is not fully dust‑tight (IP66 would be required for harsher spray zones)
Limited to low‑voltage (400 V) output; unsuitable where shipboard medium‑voltage distribution (>690 V) is required
Frames ≥450 require periodic greasing of bearings, increasing maintenance effort
Physical footprint can be large for vessels with restricted machinery spaces
Requires careful moisture control during insulation testing to avoid false readings

Typical Vessels: Product tanker (30‑70 k DWT)Container feederBulk carrier (small‑to‑mid size)Offshore supply vesselCruise ship hotel‑load sections

Decision Guide: Choose if you need a proven 355 kVA low‑voltage generator with strong thermal performance, VPI insulation and flexible cooling for medium‑size commercial vessels operating in salty environments. Avoid if the installation demands higher voltage levels, a more compact unit, or a higher ingress protection rating such as IP66.

Use Cases: Typically installed as an auxiliary or emergency power source on medium‑sized tankers, offshore support ships and cruise vessels to supply hotel loads, cargo handling equipment, and safety systems. The dual‑fan cooling makes it suitable for both air‑cooled and water‑cooled installations in tropical or temperate climates.

Manufacturer Datasheet

Datasheet

AMG 0355-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI‑impregnated windings provide high thermal endurance and moisture resistance
IP55 sealed enclosure protects against salt spray and dust in harsh maritime environments
Integrated ABB UNITROL/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation limits
Dual axial fans allow flexible air or water cooling for a wide ambient temperature range (-20 °C to +45 °C)
Standardised frame (355) enables sealed‑for‑life bearing design, reducing routine lubrication needs

Weaknesses

Relatively large footprint and weight compared with compact diesel generators of similar rating
Fixed 400 V output may require step‑up transformers for vessels that standardise on higher bus voltages
Requires periodic insulation testing (Megger, tan‑delta) to monitor moisture ingress in the windings
Bearing inspection and possible re‑greasing are still needed for frames above 450, increasing maintenance planning
Initial capital cost is higher than comparable low‑tech alternators

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise ship (mid‑size)LNG/LPG carrier (auxiliary power)

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a robust 355 kVA auxiliary generator with high‑temperature insulation, IP55 protection and integrated ABB AVR for vessels that operate in corrosive marine climates and have space for a frame‑355 unit. Avoid if the vessel requires higher bus voltages, ultra‑compact weight/size solutions, or has limited access to specialised electrical testing facilities.

Use Cases: Typically installed as an auxiliary generator supplying hotel loads, emergency power, dynamic positioning support, or as part of a dual‑generator configuration on tankers and container ships. Also used on offshore platforms where reliable, low‑maintenance power is critical.

Manufacturer Datasheet

Datasheet

AMG 0355-440V-50Hz-IP23

· synchronous marine generator

Power (kVA)

355

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H insulation tolerates high ambient temperatures and thermal cycling
Modular VPI (vacuum pressure impregnation) winding gives excellent moisture resistance
Dual cooling options (air‑flow or water‑cooled) adapt to vessel layout
Integrated UNITROL/GEN AVR provides robust voltage regulation and protection limits
IP23 rating allows deck installation with minimal additional sealing

Weaknesses

IP23 does not protect against direct water spray; extra shielding needed in harsh sea spray zones
Output voltage limited to 440 V, requiring step‑up transformers for higher‑voltage ship systems
Relatively heavy frame for the power rating, impacting space‑critical installations
Moisture ingress can still degrade insulation; requires regular IR and PD testing
Cooling performance depends on unobstructed airflow or clean water circuits

Typical Vessels: Offshore Supply Vessel (OSV)Platform Supply VesselFerry / Ro‑RoSmall Container ShipBulk Carrier (auxiliary power)Naval auxiliary vessel

Certifications: DNV GL ClassificationABS Type ApprovalLloyd's Register ApprovalIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven 355 kVA auxiliary generator with high temperature tolerance, flexible cooling and integrated AVR for vessels that can accommodate an IP23 enclosure. Avoid if the installation requires higher output voltage, a higher ingress protection rating (e.g., IP54+) or ultra‑lightweight equipment for very space‑constrained engine rooms.

Use Cases: Provides main auxiliary power for ship service loads, emergency standby generation, and hybrid propulsion support on offshore supply vessels and ferries. Frequently installed in engine rooms or deck‑mounted generator rooms where air cooling is feasible, with optional water‑cooling for hot climates.

Manufacturer Datasheet

Datasheet

AMG 0355-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give excellent thermal endurance in harsh sea‑water environments.
Dual axial fans provide flexible air‑cooling; water‑cooling can be added for high ambient temperatures.
Sealed‑for‑life bearing option (frame <400) reduces routine maintenance intervals.
UNITROL AVR series offers built‑in voltage, frequency and over/under‑excitation protection.
Standardised LV frame sizes (400–630) simplify integration with existing ABB marine generator platforms.

Weaknesses

IP44 rating only protects against splashing; not suitable for fully enclosed or heavily spray‑exposed locations without additional shielding.
Fixed 440 V output may require step‑up/down transformers on vessels that standardise on 690 V LV systems.
Bearing greasing is required on larger frames (≥450), adding periodic maintenance tasks.
Maximum ambient temperature rating (+45 °C) can be limiting for tropical operations without supplemental cooling.
Physical dimensions and weight are not published in the public data, requiring a site‑specific fit check.

Typical Vessels: Medium‑size TankerContainer ShipBulk CarrierCruise VesselOffshore Supply / Support Vessel

Certifications: ABSDNV GLLloyd's RegisterIEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a robust 355 kVA auxiliary generator with high‑temperature insulated windings, flexible air cooling and proven ABB UNITROL AVR control for tankers or container ships operating in temperate climates. Avoid if the installation requires fully splash‑proof (IP65+) equipment, higher LV voltage standards (690 V) or ultra‑compact units where space and weight are critical.

Use Cases: Typically installed as a main auxiliary generator on medium‑size merchant vessels to supply shipboard hotel loads, cargo handling gear and emergency power. Also used in shore‑power conversion sets for ports and as backup generation on offshore platforms where reliability and low maintenance are paramount.

Manufacturer Datasheet

Datasheet

AMG 0355-440V-50Hz-IP55

· synchronous marine generator

Power (kVA)

355

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 sealed enclosure protects against salt spray and dust.
Class H VPI (vacuum pressure impregnation) insulation offers high thermal endurance and moisture resistance.
Dual axial‑fan cooling allows flexible air or water‑cooled operation across a wide ambient temperature range (-20 °C to +45 °C).
Compliant with IEC 60034‑18‑32 and widely accepted by major classification societies (DNV, ABS, LR).
Modular frame sizes (400–630) enable integration into standard marine generator rooms.

Weaknesses

Relatively large footprint and weight compared with compact diesel generators of similar rating.
Frames ≥450 require periodic bearing re‑greasing, increasing maintenance effort.
Insulation condition must be closely monitored for moisture ingress; regular IR and megger testing is mandatory.
Requires a separate AVR (UNITROL 1000 or GEN series) which adds to system complexity and cost.
Fixed 440 V output may limit compatibility with vessels that standardise on other voltage levels.

Typical Vessels: Product TankerContainer FeederCruise Ship (hotel load)Offshore Supply VesselLNG Carrier (auxiliary power)

Certifications: DNV GLABSLloyd's Register

Decision Guide: Choose if you need a mid‑size (≈350 kVA) auxiliary generator that can withstand harsh marine environments, offers high‑temperature insulation and flexible cooling options, and must meet major classification society standards. Avoid if vessel space or weight is at a premium, you prefer a fully integrated AVR package, or you require a broader voltage range without additional transformers.

Use Cases: Typically installed in the auxiliary power room of medium‑sized commercial vessels to supply hotel loads, cargo handling equipment, and emergency power. The unit can also serve as a standby generator for propulsion support on offshore platforms where reliability and resistance to salt corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 0355-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give excellent thermal endurance and moisture resistance.
Dual axial fans allow air‑cooling or optional water‑cooling, supporting operation from –20 °C to +45 °C.
Sealed‑for‑life bearings (frame <400) reduce routine greasing intervals; larger frames have serviceable bearings.
Modular frame sizes (180–630 mm) fit a wide range of vessel engine rooms.
Integrated UNITROL or GEN AVR provides robust voltage, frequency and over/under‑excitation control.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and limited water spray; not suitable for direct immersion zones.
Large physical footprint compared with compact diesel gensets of similar power, limiting use on small vessels.
Moisture‑sensitive insulation requires regular IR and partial‑discharge testing to avoid hidden degradation.
Cooling performance depends on clean airflow; fan fouling in salty environments can cause overheating if not maintained.
Requires skilled marine electrical personnel for AVR tuning and bearing inspection.

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if you need a proven 300‑500 kVA synchronous generator with high‑temperature insulation, flexible cooling options and robust AVR for medium to large commercial ships. Avoid if space is at a premium, the installation area requires higher ingress protection (IP≥44), or you prefer a low‑maintenance diesel set without regular insulation testing.

Use Cases: Main auxiliary power generation for propulsion support, hotel load on passenger vessels, cargo handling equipment supply, and emergency standby power on tankers and bulk carriers where reliable voltage regulation is critical.

Manufacturer Datasheet

Datasheet

AMG 0355-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) and VPI vacuum pressure impregnation gives excellent dielectric strength in salty environments
Dual axial‑fan cooling provides flexible air or water cooling for a wide ambient temperature range (-20 °C to +45 °C)
Integrated UNITROL AVR (1000 series) offers precise voltage regulation with under/over‑excitation limiters
Sealed‑for‑life bearings on frames <400 reduce routine greasing intervals
IP44 enclosure protects against splashing water and dust, suitable for deck‑mounted installations

Weaknesses

Physical footprint and weight are substantial; may require dedicated machinery space
Requires regular vibration, bearing temperature and insulation resistance monitoring to avoid premature failures
IP44 rating does not protect against full immersion, limiting placement in areas prone to flooding
Fixed 440 V output may need step‑up transformers for vessels standardized on higher bus voltages
Maintenance of VPI insulation (partial discharge testing) needs specialised equipment and trained personnel

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise shipGeneral cargo vessel

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL class approvalABS class approvalLloyd's Register class approval

Decision Guide: Choose if you need a proven, high‑power auxiliary generator with robust H‑class insulation, dual‑fan cooling and integrated AVR for medium‑size to large vessels that can accommodate its size and have the maintenance capability for bearing and insulation monitoring. Avoid if space is at a premium, you require higher bus voltage without transformers, or you prefer low‑maintenance oil‑free or hybrid generator sets.

Use Cases: Typically installed as an auxiliary power source on tankers, container ships and offshore supply vessels to run cargo handling gear, hotel loads and emergency systems. Also used as standby generators for critical navigation and safety equipment where high reliability in a corrosive marine environment is essential.

Manufacturer Datasheet

Datasheet

AMG 0355-440V-60Hz-IP55

· synchronous marine generator

Power (kVA)

355

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulation provides excellent moisture resistance and long life in harsh marine environments
IP55 enclosure protects against salt spray and dust, reducing corrosion risk
Dual axial fan cooling (air or water) offers flexible installation for varied ambient conditions
Integrated UNITROL AVR delivers precise voltage regulation with under/over‑excitation limits
Sealed‑for‑life bearings on frames <400 simplify maintenance and improve reliability

Weaknesses

Relatively large footprint (frame 400–630 mm) may limit installation space on smaller vessels
Standard output is 440 V; additional transformers are required for other shipboard voltage systems
Periodic insulation resistance and partial‑discharge testing are mandatory due to high humidity exposure
AVR units can be sensitive to salt corrosion and may need protective enclosures in very aggressive environments
Maximum ambient temperature +45 °C limits use in extreme tropical conditions without supplemental cooling

Typical Vessels: Product tanker (medium size)Offshore supply vesselCruise ship auxiliary powerNaval auxiliary or support shipFerry / Ro‑Ro vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL Marine Class approvalABS classification

Decision Guide: Choose if you need a robust 355 kVA auxiliary generator with high insulation class, IP55 protection and flexible cooling for 60 Hz vessels that can tolerate a moderate footprint. Avoid if the vessel requires higher power (>500 kVA), lower voltage output without step‑down equipment, or operates continuously in extreme tropical temperatures where additional cooling is impractical.

Use Cases: Typically installed as the main service generator on medium‑size tankers and offshore support vessels, providing shipboard electricity for hotel loads, cargo handling gear, and emergency power. Also used as a standby generator on cruise ships and naval auxiliaries where redundancy and corrosion resistance are critical.

Manufacturer Datasheet

Datasheet

AMG 0355-690V-50Hz-IP23

· synchronous marine generator

Power (kVA)

355

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

H‑class (Class H) VPI vacuum‑pressure impregnated windings provide high thermal endurance in humid marine environments.
Dual axial fans enable either air‑only or water‑assisted cooling, extending the operating temperature range from –20 °C to +45 °C.
Integrated ABB UNITROL 1000 AVR delivers precise voltage regulation with built‑in under/over‑excitation limits.
Sealed‑for‑life bearing option (frames <400) reduces routine maintenance requirements.
Modular frame sizes (180–630 mm) allow flexible installation on a variety of vessel layouts.

Weaknesses

IP23 rating only protects against limited water spray; not suitable for washdown or heavily splashed areas.
Fixed 690 V output may necessitate additional step‑up transformers for vessels that operate at higher bus voltages.
H‑class insulation requires regular IR and partial discharge testing to maintain reliability.
Weight and footprint are relatively large compared with compact diesel generators of similar rating.
No built‑in exhaust after‑treatment; external noise mitigation measures are required.

Typical Vessels: Container ShipBulk CarrierTankerCruise ShipOffshore Supply VesselFerry

Decision Guide: Choose if you need a reliable 355 kVA auxiliary generator with robust H‑class insulation, flexible cooling options and ABB’s proven AVR for vessels operating at up to 690 V where an IP23 enclosure is sufficient. Avoid if the installation requires higher bus voltage, washdown‑grade protection (IP55+), or strict weight/space constraints.

Use Cases: Typically installed as a main service generator on medium‑size merchant ships, supplying electricity for hotel loads, cargo handling equipment and emergency power. Also used on offshore support vessels where space permits the modular frame and dual‑fan cooling can be matched to ambient conditions.

Manufacturer Datasheet

Datasheet

AMG 0355-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulation provides high moisture resistance and long life in salty atmospheres.
Integrated UNITROL AVR offers precise voltage regulation with built‑in under/over‑excitation limits.
Dual axial fans enable air or water cooling, suitable for ambient temperatures from –20 °C to +45 °C up to 1000 m altitude.
Sealed‑for‑life bearing design (frame <400) reduces routine lubrication and maintenance intervals.
Compact LV frame size fits a wide range of engine‑room layouts on medium‑size vessels.

Weaknesses

Fixed 690 V output may require step‑up/step‑down transformers for vessels standardized on other voltages.
IP44 rating protects against splashing but not full immersion, limiting placement in extremely wet zones.
Physical footprint and weight are larger than high‑speed diesel generators of comparable power.
Requires specialised personnel for VPI insulation testing and AVR diagnostics.
Higher initial capital cost compared with basic low‑cost alternators.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose this generator when you need a robust, low‑maintenance 300–500 kVA source with proven moisture‑resistant insulation and integrated AVR for vessels operating in harsh sea conditions. Avoid if the installation space is extremely limited, the vessel uses a different standard voltage without transformer capacity, or budget constraints prioritize lower upfront cost over long‑term reliability.

Use Cases: Commonly installed as the main auxiliary power source on medium‑size merchant ships and offshore support vessels, supplying shipboard electricity for hotel loads, cargo handling equipment, and emergency generators while withstanding salt spray and temperature extremes.

Manufacturer Datasheet

Datasheet

AMG 0355-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 enclosure protects against dust and water spray in marine environments
Class H vacuum pressure impregnation (VPI) insulation offers high thermal endurance and moisture resistance
Dual axial fans provide flexible air‑cooling; optional water cooling for hot climates
Integrated UNITROL or GEN AVR series delivers precise voltage regulation with UEL/OEL limiters
Sealed‑for‑life bearing option reduces maintenance intervals for frame 355

Weaknesses

Relatively large footprint and weight compared with compact diesel generators of similar rating
Requires regular insulation resistance testing (Megger, tan‑delta) to monitor moisture ingress
Higher initial capital cost than lower‑rated or simpler generator sets
Complex commissioning procedure; AVR must be isolated for certain tests
Fixed 690 V output may need additional transformers for vessels standardising on other voltages

Typical Vessels: Offshore Supply Vessel (OSV)Platform Supply Vessel (PSV)Cruise Ship auxiliary powerContainer ship (auxiliary generator)Tanker (emergency/auxiliary power)

Decision Guide: Choose if you need a high‑power, marine‑grade synchronous generator with strong corrosion resistance, Class H insulation and flexible cooling for vessels operating in harsh environments. Avoid if space, weight or budget constraints are critical, or if the vessel requires a lower voltage output without additional transformation equipment.

Use Cases: Typically installed as an auxiliary power source on offshore support ships, cruise liners, and large cargo carriers to supply hotel loads, deck machinery, and emergency power. The unit’s robust design also makes it suitable for standby generators in polar or high‑temperature regions where cooling reliability is essential.

Manufacturer Datasheet

Datasheet

AMG 0355-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulation provides high thermal endurance for harsh marine environments.
IP23 enclosure allows compact deck installation while protecting against solid foreign objects.
Dual‑mode cooling (air and optional water) gives flexibility for varied ambient conditions.
Integrated UNITROL/GEN AVR options with UEL/OEL limiters ensure stable voltage regulation under load changes.
Sealed‑for‑life bearing design (frame <400) reduces routine lubrication maintenance.

Weaknesses

IP23 offers no protection against water ingress; not suitable for wet‑bay or exposed locations.
Physical size and weight are significant for vessels with limited auxiliary space.
Requires regular insulation resistance and partial‑discharge testing to monitor moisture ingress.
Higher initial capital cost compared with basic low‑spec generators.
Maintenance of dual‑fan system can be labor‑intensive in salt‑laden atmospheres.

Typical Vessels: Product TankerContainer ShipBulk CarrierCruise FerryOffshore Supply Vessel

Certifications: DNVABSIEC 60034‑18‑32 (insulation ageing)

Decision Guide: Choose if you need a reliable 355 kVA auxiliary generator with high‑temperature insulation, flexible cooling and robust AVR for medium‑size commercial vessels operating in hot or humid climates. Avoid if the installation requires water‑tight protection (IP55+), very limited space, or if low acquisition cost is the primary driver.

Use Cases: Typically installed as a main auxiliary generator on medium‑sized tankers, container ships and bulk carriers to supply shipboard power for hotel services, cargo handling equipment and emergency systems. Also used in cruise ferries where redundancy and stable voltage under variable loads are critical.

Manufacturer Datasheet

Datasheet

AMG 0355-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal class (H) allows operation up to +180 °C ambient, extending service life in hot climates.
Dual axial‑fan cooling provides flexible air or water cooling options for varied installation spaces.
IP44 enclosure protects against splashing water and dust, suitable for exposed deck installations.
Integrated UNITROL AVR series offers precise voltage regulation with under/over‑excitation limits.
Standardised frame sizes (400–630) simplify replacement and spare parts logistics.

Weaknesses

Maximum output of 355 kVA may be insufficient for larger vessels requiring multiple high‑power gensets.
IP44 rating does not protect against direct water jets; additional sealing needed in very wet locations.
Four‑pole design limits rotational speed options, potentially affecting shaft space on compact engine rooms.
Requires regular insulation resistance testing (Megger) due to Class H winding susceptibility to moisture ingress.
No built‑in exhaust gas cleaning; separate SCR/DPF systems are needed for emission‑controlled zones.

Typical Vessels: Offshore Supply VesselPlatform Supply VesselSmall Container Ship (≤10,000 TEU)General Cargo / Bulk Carrier (mid‑size)Ferry or Ro‑Ro vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL Type ApprovalABS Classification

Decision Guide: Choose this generator when a reliable 355 kVA auxiliary source with high temperature tolerance and flexible cooling is required for medium‑size commercial vessels operating in harsh marine environments. Avoid it if the vessel demands higher power output, direct water‑jet protection (higher IP rating), or integrated emission control within the same unit.

Use Cases: Typically installed as a main auxiliary generator on offshore supply and platform support ships to provide hotel load, cargo handling equipment power, and emergency shore‑power capability. Also used on ferries and mid‑size container vessels where space constraints favour the compact 400‑630 frame series and dual‑fan cooling can be matched to either air‑cooled engine rooms or water‑cooled installations.

Manufacturer Datasheet

Datasheet

AMG 0355-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

355

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 sealed enclosure suitable for harsh marine environments
Class H vacuum pressure impregnated (VPI) stator and rotor provide high insulation life and moisture resistance
Dual axial fans allow flexible air‑ or water‑cooled operation, extending service range from –20 °C to +45 °C
Integrated UNITROL/GEN AVR options with UEL/OEL limiters give precise voltage regulation and protection
Modular frame sizes (400–630) simplify installation on a wide variety of vessel layouts

Weaknesses

Limited to 690 V low‑voltage bus; ships requiring higher bus voltages need step‑up transformers
Only available in 60 Hz version, unsuitable for vessels standardized on 50 Hz without frequency conversion
Weight and footprint are significant (exact values not published), which may be restrictive on space‑constrained platforms
VPI insulation requires careful moisture control during maintenance; improper handling can reduce lifespan
Cooling performance depends on clean fan blades and unobstructed airflow; fouling in salt environments demands frequent checks

Typical Vessels: TankersContainer shipsBulk carriersOffshore supply vessels (OSV)Cruise linersFerries

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL type approvalABS classification approvalLloyd's Register certification

Decision Guide: Choose if: you need a reliable 355 kVA auxiliary generator for US‑type 60 Hz, low‑voltage (690 V) systems on vessels that operate in harsh marine climates and can accommodate the unit’s size. Avoid if: your ship requires 50 Hz only, higher bus voltage than 690 V without a transformer, or has severe space/weight constraints that preclude a standard frame generator.

Use Cases: Typically installed as an auxiliary power source for hotel loads, cargo handling equipment, and emergency power on tankers, container ships and offshore supply vessels. The robust IP55 design makes it popular on vessels with high exposure to salt spray and where continuous operation in tropical or arctic temperatures is required.

Manufacturer Datasheet

Datasheet

AMG 0400-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings provide high thermal endurance in harsh marine environments
Dual axial fan cooling allows flexible air‑ or water‑cooled operation over a wide ambient temperature range
Integrated ABB UNITROL/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation protection
Sealed‑for‑life bearings (frame 400) reduce maintenance intervals compared with greased units
Modular frame size 400 fits standard marine generator rooms and aligns with common auxiliary power layouts

Weaknesses

IP23 rating protects only against solid objects >12.5 mm, not against water spray or immersion, limiting placement in wet zones
Fixed 400 V output may require step‑up transformers for vessels standardising on higher bus voltages (e.g., 6.6 kV)
Physical size and weight of a 400 kVA frame can be restrictive on small vessel engine rooms
Cooling relies on fan performance; efficiency drops in high ambient temperature or fouled airflow paths
Periodic insulation resistance and partial‑discharge testing are mandatory to detect moisture ingress

Typical Vessels: Platform Supply Vessel (PSV)Offshore Support VesselMedium‑size TankerContainer FeederCruise Ship auxiliary power plantNaval auxiliary generator

Certifications: DNV GLABSLloyd's RegisterIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven, high‑temperature‑rated synchronous generator with integrated AVR for auxiliary power on medium‑size vessels and can accommodate an IP23 enclosure. Avoid if the installation requires water‑tight protection, higher native voltage output, or extremely compact footprint.

Use Cases: Typically installed as the main or emergency auxiliary generator in offshore supply ships, tankers and cruise vessels, providing stable 400 V/50 Hz power for hotel loads, cargo handling equipment, and shore‑power connections. The unit is also used in dynamic positioning support where precise voltage regulation is critical.

Manufacturer Datasheet

Datasheet

AMG 0400-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulation provides high thermal endurance in harsh marine environments
IP44 enclosure protects against splashing water and dust while allowing easy access for maintenance
Dual cooling options (air‑only or air‑water) give flexibility for different vessel layouts
Integrated UNITROL AVR series offers precise voltage regulation with under/over‑excitation limits
Sealed‑for‑life bearing option up to frame 400 reduces routine lubrication requirements

Weaknesses

IP44 is not fully dust‑tight (IP65) – may require additional sealing in very dusty compartments
Frame size and weight are relatively large for a 400 kVA unit, impacting installation space
Standard model operates at 50 Hz only; vessels requiring 60 Hz need a different variant
Water‑cooled version depends on a reliable seawater supply and filtration system
Frames above 450 require greased bearings and periodic re‑greasing, increasing maintenance

Typical Vessels: Platform Supply VesselOffshore Support VesselMedium‑size TankerContainer Ship (auxiliary power)Cruise Ship (service generator)

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV Class approved

Decision Guide: Choose if you need a robust 400 kVA auxiliary generator with high‑temperature insulation, flexible cooling and proven AVR control for vessels operating in salty, humid environments. Avoid if the installation space is severely constrained, a fully dust‑tight (IP65) enclosure is required, or the ship operates on a 60 Hz electrical system.

Use Cases: Typically installed as the main auxiliary generator on offshore support and supply vessels, providing hotel power, cargo handling equipment drive, and emergency power. Also used as a standby unit on larger tankers and cruise ships where reliability and resistance to corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 0400-400V-50Hz-IP55

· synchronous marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 enclosure suitable for harsh salt‑water environments
Class H VPI insulated windings provide high thermal endurance
Dual cooling options (air or water) give flexibility for installation conditions
Integrated UNITROL AVR with under/over‑excitation limiters ensures stable voltage regulation
Sealed‑for‑life bearing design reduces routine maintenance

Weaknesses

Physical footprint and weight are relatively large for a 400 kVA unit, requiring dedicated space
Requires skilled personnel for insulation testing (IR, tan‑delta) and VPI condition monitoring
Water‑cooled variant adds plumbing complexity and potential leak points
Higher initial capital cost compared with basic diesel generators of similar rating
Fixed 50 Hz frequency may not suit vessels standardized on 60 Hz

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselNaval auxiliary

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117-1974

Decision Guide: Choose if you need a high‑reliability, IP55 protected 400 kVA generator with flexible cooling and built‑in AVR for auxiliary or emergency power on large commercial vessels. Avoid if space is at a premium, the vessel operates on 60 Hz, or you require a lower‑cost solution with minimal maintenance expertise.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on container ships, bulk carriers, tankers and cruise vessels. Also used in offshore support ships where robust environmental protection and reliable voltage regulation are critical.

Manufacturer Datasheet

Datasheet

AMG 0400-400V-60Hz-IP23

· Four‑pole synchronous marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings provide excellent thermal and moisture resistance.
Dual axial fan cooling allows both air‑ and water‑cooled operation, extending service in hot climates.
Modular frame sizes (LV standard series) simplify installation on a wide range of vessel layouts.
Integrated UNITROL/GEN AVR options give precise voltage regulation and built‑in under/over‑excitation protection.
Proven compliance with IEC 60034‑18‑32 and IEEE Std 117‑1974 for insulation ageing and safety.

Weaknesses

IP23 rating offers limited protection against direct water ingress; additional sealing may be required in very wet zones.
Frames below 400 kW use sealed‑for‑life bearings, but larger frames (e.g., 450) need periodic greasing, increasing maintenance effort.
Physical size and weight are relatively large for vessels with constrained engine‑room space.
Performance can be affected by moisture ingress into the VPI system if not regularly inspected.
Requires dedicated AVR unit; failure of the AVR may necessitate a full generator shutdown.

Typical Vessels: TankerContainer shipBulk carrierCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if you need a robust 400 kVA auxiliary generator with high‑temperature insulation, flexible cooling options and proven AVR control for medium‑ to large‑size vessels. Avoid if the installation space is severely limited, you require a fully sealed (IP66/68) unit, or you prefer a maintenance‑free bearing design for all frame sizes.

Use Cases: The AMG 0400-400V-60Hz-IP23 is typically installed as an auxiliary generator supplying hotel power, cargo handling equipment, and emergency loads on tankers, container ships, bulk carriers, cruise ships, and offshore supply vessels. Its dual‑fan cooling makes it suitable for tropical routes, while the high insulation class supports continuous operation under heavy load cycles.

Manufacturer Datasheet

Datasheet

AMG 0400-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H vacuum pressure impregnated (VPI) stator and rotor provide excellent moisture resistance and long insulation life.
Sealed‑for‑life bearing design (frame <400) reduces maintenance intervals in harsh sea conditions.
Dual axial fan cooling allows flexible air or water‑cooled operation, suitable for ambient temperatures –20 °C to +45 °C.
Integrated UNITROL AVR options (1000 series or GEN06/GEN08) give precise voltage regulation and built‑in over/under‑excitation protection.
IP44 rating protects against splashing water and dust while keeping the unit compact for LV applications.

Weaknesses

Output limited to 400 V; higher system voltages require additional step‑up transformers.
IP44 is only splash‑proof, not fully watertight (e.g., IP68), limiting placement in heavily spray‑exposed locations.
Frames ≥450 use re‑greasable bearings, increasing routine maintenance compared with sealed‑for‑life units.
Physical size and weight are relatively large for small craft or retrofits where space is at a premium.
Requires careful moisture control during insulation testing to avoid false negatives.

Typical Vessels: Offshore supply vesselPlatform support vesselFerry / Ro‑Ro passenger shipContainer ship (auxiliary power)Bulk carrier (emergency generator)

Certifications: DNV GLABS

Decision Guide: Choose if you need a robust 400 kVA LV generator with high‑grade Class H insulation, sealed bearings and flexible cooling for vessels operating in harsh marine environments up to 1000 m altitude. Avoid if the installation demands higher voltage output, fully watertight (IP68) protection, or minimal footprint and weight.

Use Cases: The AMG 0400‑400V is typically installed as an auxiliary or emergency generator on offshore supply vessels and passenger ferries, providing hotel power, deck machinery support, and redundancy for main propulsion systems. It is also used on container ships and bulk carriers where a reliable 400 kVA source is required for cargo handling equipment and safety systems.

Manufacturer Datasheet

Datasheet

AMG 0400-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 protected enclosure resists salt spray and dust, suitable for harsh marine environments
Class H VPI insulation offers excellent thermal ageing resistance up to 180 °C
Integrated UNITROL or GEN AVR options give precise voltage regulation and built‑in under/over‑excitation limits
Dual axial fan design allows flexible air‑ or water‑cooled operation, improving cooling efficiency in varied climates
Standardised frame sizes (400–630) simplify replacement and spare‑parts logistics

Weaknesses

Relatively large footprint and weight may limit installation on small vessels or retrofits
Requires regular insulation resistance testing to detect moisture ingress common in marine service
Bearing lubrication is either sealed‑for‑life (up to frame 400) or requires periodic greasing, adding maintenance tasks
Fixed 400 V output may need step‑up transformers for ships that operate at higher distribution voltages
Water‑cooled variant adds complexity and potential leak points if not properly maintained

Typical Vessels: Container ship (mid‑size)Product tankerCruise ferryOffshore supply vesselNaval auxiliary / support ship

Certifications: DNV GL class approval

Decision Guide: Choose if you need a robust, medium‑size (≈400 kVA) generator with proven IP55 protection and Class H insulation for vessels operating in high humidity or salt‑laden environments. Avoid if vessel space is severely constrained, the power system requires higher voltage directly from the generator, or you prefer a low‑maintenance sealed‑for‑life bearing design only available on smaller frames.

Use Cases: Typically installed as the main auxiliary generator on medium‑sized cargo and passenger vessels where reliable 400 kVA power is required for hotel loads, navigation equipment, and emergency systems. The dual cooling option makes it suitable for both tropical routes (water‑cooled) and temperate climates (air‑cooled).

Manufacturer Datasheet

Datasheet

AMG 0400-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

VPI (vacuum pressure impregnation) H‑class insulation provides excellent moisture resistance in harsh marine environments
Dual axial fans allow flexible air or water cooling to suit vessel layout and ambient conditions
IP23 enclosure gives splash protection while keeping the unit compact for deck installation
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation limits
ABB global service network and proven track record in offshore and merchant vessels

Weaknesses

IP23 rating is only splash‑proof; not suitable where full dust/water ingress protection (e.g., IP55/IP68) is required
Large footprint and weight typical of a frame‑400 generator may limit installation on space‑constrained ships
Cooling performance depends on unobstructed airflow; fouling of fan blades in salty environments can reduce output
Regular insulation resistance testing and bearing lubrication are mandatory to avoid moisture‑induced failures
Fixed 440 V nominal voltage may require additional step‑up/down transformers for vessels with different bus standards

Typical Vessels: Offshore supply vesselPlatform support vesselCruise ship auxiliary power plantContainer ship (auxiliary generator)Tanker (emergency/auxiliary power)

Certifications: DNV GLABS

Decision Guide: Choose if you need a robust 400 kVA auxiliary generator with proven VPI insulation, flexible cooling options and ABB’s AVR integration for vessels that can accommodate an IP23‑rated unit. Avoid if the installation requires higher ingress protection, very limited space, or a different nominal voltage without additional transformer equipment.

Use Cases: Commonly installed as the main auxiliary power source on medium‑size merchant ships and offshore support vessels, providing shipboard electricity for hotel loads, cargo handling gear, dynamic positioning systems, and emergency power when shore supply is unavailable.

Manufacturer Datasheet

Datasheet

AMG 0400-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal class (H) allows operation in harsh temperature environments up to +45 °C.
IP44 rating provides protection against splashing water and limited dust, suitable for deck‑mounted installations.
Integrated UNITROL/GEN AVR options give precise voltage regulation and built‑in under/over‑excitation limiters.
Dual axial fan cooling can be configured for air‑ or water‑cooled operation, enhancing flexibility on different vessel layouts.
Standardised frame sizes (400–630) simplify spare‑parts logistics and allow interchangeability within ABB’s AMG series.

Weaknesses

IP44 enclosure is not fully sealed; additional protective measures are required in very wet or spray‑heavy zones.
Class H insulation limits continuous operation above +45 °C, which may require supplemental cooling on high‑load vessels.
Four‑pole design results in a relatively large physical footprint compared with compact permanent‑magnet alternatives.
Requires regular insulation resistance and partial‑discharge testing to monitor VPI (vacuum pressure impregnation) condition in marine humidity.
AVR units (UNITROL 1000/GEN series) need periodic desiccant replacement to avoid moisture‑induced drift.

Typical Vessels: Container shipBulk carrierProduct tankerCruise linerOffshore supply vessel

Certifications: DNV GL Marine CertificationABS Classification approvalIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if: you need a proven, medium‑size (400 kVA) synchronous generator with flexible cooling options and robust voltage regulation for vessels that operate in temperate to warm climates. Avoid if: the installation area is exposed to heavy spray or requires fully sealed equipment, or if space/weight constraints favour a more compact permanent‑magnet generator.

Use Cases: The AMG 0400 is typically installed as the main auxiliary power source on mid‑size cargo vessels and cruise ships, supplying ship service loads such as hotel services, navigation systems, and emergency generators. It is also used in offshore supply vessels where dual cooling (air/water) flexibility helps maintain performance in varying sea‑state conditions.

Manufacturer Datasheet

Datasheet

AMG 0400-440V-50Hz-IP55

· VPI‑insulated synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H vacuum‑pressure‑impregnated (VPI) stator and rotor insulation gives excellent moisture resistance and long life in harsh marine environments
IP55 sealed enclosure protects against salt spray and dust, reducing maintenance frequency
Sealed‑for‑life bearings (frame <400) eliminate routine greasing and improve reliability
Flexible cooling options – axial fans for air cooling or optional water‑cooling – allow adaptation to vessel layout
Integrated UNITROL 1000 series AVR with UEL/OEL limiters provides stable voltage regulation and built‑in protection

Weaknesses

Fixed 440 V output may require step‑up transformers on vessels that operate at higher LV bus voltages (e.g., 6.3 kV)
Physical footprint larger than compact diesel generators of similar rating, impacting space‑constrained engine rooms
Water‑cooled variant adds complexity with additional piping and corrosion‑control requirements
Higher initial capital cost compared with lower‑specification generators
Requires strict moisture control during installation to preserve VPI insulation performance

Typical Vessels: Product tankerChemical tankerOffshore supply vessel (OSV)Cruise shipContainer feederRo‑Ro ferryNaval auxiliary

Certifications: DNV class approvalABS class approvalLloyd's Register (LR) class approvalIEC 60034‑18‑32 compliance for insulation ageing

Decision Guide: Choose if you need a robust 400 kVA LV generator with high moisture resistance, sealed bearings and flexible cooling for medium‑size vessels operating in harsh marine conditions. Avoid if the vessel requires higher bus voltage, has severe space constraints, or budget limits preclude the higher upfront cost.

Use Cases: Primarily installed as the main auxiliary power source on medium‑sized merchant ships to supply hotel loads, cargo handling equipment and emergency power; also used as a standby generator for critical systems where reliability and low maintenance are paramount.

Manufacturer Datasheet

Datasheet

AMG 0400-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give excellent thermal endurance and moisture resistance
Dual axial fans provide flexible air or water cooling for a wide ambient temperature range (-20 °C to +45 °C)
Sealed‑for‑life bearings on frames <400 reduce maintenance intervals
Integrated UNITROL AVR options (1000 series, GEN06/GEN08) deliver precise voltage regulation and protection limits
Broad voltage compatibility (380–690 V) allows installation on many shipboard power systems

Weaknesses

IP23 rating only protects against splashing; not suitable for dusty or heavily spray‑exposed locations
Maximum continuous output of 400 kVA may be insufficient for larger vessels requiring higher hotel load capacity
Moisture‑sensitive insulation still requires regular IR and partial‑discharge testing in marine environments
Cooling performance can degrade if axial fans become fouled with salt deposits, demanding frequent cleaning
Larger frame versions (>400) need greasable bearings, increasing maintenance effort

Typical Vessels: Offshore supply vesselPlatform support vesselMedium‑size tankerCruise ship auxiliary power unitResearch / survey vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a compact, high‑temperature‑rated 400 kVA generator with robust VPI insulation and flexible cooling for medium‑size vessels operating in tropical or temperate climates. Avoid if the vessel requires higher power output, dust‑tight (IP65+) protection, or minimal maintenance intervals beyond sealed‑for‑life bearings.

Use Cases: Commonly installed as the main auxiliary generator on offshore support ships to supply hotel loads and emergency power, or as a secondary unit on cruise liners for redundancy. Also used on research vessels where reliable voltage regulation and resistance to humid, salty environments are critical.

Manufacturer Datasheet

Datasheet

AMG 0400-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High temperature Class H insulation allows operation in hot climates up to +45 °C.
Vacuum pressure impregnated (VPI) windings provide excellent moisture resistance and long life.
Modular frame (400 series) fits standard marine engine rooms and supports both air‑ and water‑cooled variants.
Integrated UNITROL AVR offers precise voltage regulation with under/over‑excitation limits.
Designed to meet IEC 60034‑18‑32 ageing standards and widely supported by ABB service network.

Weaknesses

IP44 rating only protects against splashing water; not suitable for fully sealed compartments exposed to heavy spray.
Frame 400 size results in a relatively large footprint and weight compared with newer compact generators.
Bearing lubrication may require periodic greasing (non‑sealed bearings on some frames).
Fixed 60 Hz frequency limits use on vessels that operate exclusively at 50 Hz without a converter.
Cooling performance depends on adequate airflow or water flow; hot ambient conditions can raise winding temperatures.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven 400 kVA auxiliary generator with robust Class H insulation, ABB global support and flexible cooling options for vessels operating at 60 Hz. Avoid if space is extremely limited, a higher ingress protection rating (IP66+) is required, or the vessel runs only on 50 Hz without frequency conversion.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel loads, cargo handling equipment and emergency power on medium‑size merchant ships; also used in hybrid propulsion setups where it can operate alongside diesel engines or batteries to provide stable voltage.

Manufacturer Datasheet

Datasheet

AMG 0400-440V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 protection suitable for harsh salt‑water environments
Class H VPI (vacuum pressure impregnation) insulation gives excellent thermal endurance
Integrated UNITROL/GEN AVR options provide precise voltage regulation and overload protection
Flexible cooling – air‑only or combined air/water – adapts to vessel space constraints
Sealed‑for‑life bearings on frames <400 reduce routine lubrication requirements

Weaknesses

Maximum output limited to 400 kVA; not suitable for vessels requiring larger auxiliary power
Weight and footprint of a Frame 400 unit can be significant for small craft
VPI insulation is sensitive to moisture ingress; requires strict humidity control during maintenance
Air‑only cooling may be insufficient in very high ambient temperatures without supplemental water cooling
Initial capital cost higher than comparable low‑cost, non‑ABB alternatives

Typical Vessels: Offshore supply vesselPlatform support vesselFerry / Ro‑RoCoastal tankerResearch or survey ship

Certifications: DNV GL Marine Classification – Auxiliary GeneratorABS Class – Marine MachineryIMO SOLAS Chapter II‑1 (Electrical Installations)IEC 60034‑18‑32 (Insulation ageing)

Decision Guide: Choose if: you need a reliable 400 kVA auxiliary generator with robust IP55 protection, high‑temperature insulation and integrated AVR for vessels operating in corrosive marine climates. Avoid if: the power requirement exceeds 500 kVA, weight/space are critical constraints, or you prefer a lower‑cost unit without VPI insulation.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply ships to run deck machinery, hotel loads and emergency systems; also used as standby generators on ferries where rapid voltage regulation and corrosion resistance are essential.

Manufacturer Datasheet

Datasheet

AMG 0400-690V-50Hz-IP23

· marine synchronous generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Compact LV frame (400‑630) suitable for typical ship engine rooms
Class‑H VPI‑impregnated windings give high thermal endurance and moisture resistance
Dual axial fans with optional water‑cooling allow flexible cooling strategies up to +45 °C ambient
Integrated UNITROL AVR provides precise voltage regulation and under/over‑excitation protection
ABB’s proven marine‑grade design meets IEC 60034‑18‑32 and IEEE Std 117 standards

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; not fully splash‑proof for harsh spray zones
Frames below 450 require periodic bearing greasing – higher maintenance than sealed‑for‑life units
Physical size and weight can be limiting on small vessels or retrofits with tight spaces
Cooling performance depends on adequate airflow; hot climates may need supplemental water cooling
AVR electronics are sensitive to salt‑mist corrosion and must be inspected regularly

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (auxiliary power)Offshore supply vessel

Decision Guide: Choose if you need a reliable 400 kVA auxiliary generator with proven ABB engineering, modular LV frame size and flexible cooling for vessels operating up to +45 °C ambient. Avoid if the installation area requires higher ingress protection (IP66/67), ultra‑compact units, or minimal maintenance bearing designs.

Use Cases: Commonly installed as part of the ship’s auxiliary power plant to run hotel loads, cargo handling equipment, and emergency systems on medium‑size merchant vessels where a robust, serviceable generator is preferred over higher‑density but less accessible alternatives.

Manufacturer Datasheet

Datasheet

AMG 0400-690V-50Hz-IP44

· marine synchronous generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Compact LV rating (400 kVA) fits a wide range of auxiliary power applications.
Robust VPI (vacuum pressure impregnation) H‑class insulation provides high thermal endurance and moisture resistance.
Dual axial fans with optional water cooling ensure adequate temperature control from –20 °C to +45 °C.
Sealed‑for‑life bearings on frames ≤400 reduce routine maintenance intervals.
Integrated UNITROL AVR series offers precise voltage regulation and built‑in over/under‑excitation protection.

Weaknesses

IP44 rating only protects against splashing water; not suitable for fully enclosed or high‑pressure washdown zones.
Cooling performance may be marginal in ambient temperatures above the design limit of +45 °C.
Insulation health must be monitored regularly (Megger, PD tests) due to marine humidity and salt exposure.
Bearing lubrication on larger frames (>400) still requires periodic greasing.
Fixed 690 V output limits flexibility for vessels standardising on 440/660 V systems.

Typical Vessels: Container shipTankerBulk carrierOffshore supply vesselCruise shipFerry

Certifications: IMO D‑2DNV

Decision Guide: Choose if you need a reliable 400 kVA auxiliary generator with high‑temperature insulation, sealed bearings and ABB service support for vessels operating in typical marine climates (–20 °C to +45 °C). Avoid if the installation requires higher voltage flexibility, full washdown protection (IP55/65), or operation in extreme hot environments where additional cooling is mandatory.

Use Cases: Commonly installed as a main auxiliary generator for hotel load and engine‑starting power on medium‑size cargo vessels, as an emergency power source on tankers, and as part of the power plant on offshore supply ships where compact LV generators are preferred.

Manufacturer Datasheet

Datasheet

AMG 0400-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure resists salt spray and dust, extending service life in harsh marine environments
Class H VPI insulation provides high thermal endurance and resistance to moisture ingress
Dual‑axial fan cooling can be configured for air or water cooling, offering flexibility for different ship layouts
Integrated UNITROL/GEN AVR options give precise voltage regulation and built‑in under/over‑excitation protection
Standardised frame sizes (400–630) simplify installation and spare‑parts logistics

Weaknesses

Large physical footprint and weight require substantial engine room space and robust mounting structures
Bearings on frames >400 are not sealed for life, necessitating periodic greasing and inspection
Only 690 V output; higher ship voltages need step‑up transformers, adding cost and losses
Requires skilled personnel for insulation testing (Megger, tan‑delta) and AVR calibration
Initial capital outlay is higher than smaller diesel generators of comparable rating

Typical Vessels: Container shipsBulk carriersTankersCruise linersOffshore supply vesselsLNG carriers (auxiliary power)

Certifications: DNV

Decision Guide: Choose if you need a robust 400 kVA auxiliary generator with IP55 protection, Class H insulation and flexible cooling for medium‑to‑large commercial vessels. Avoid if engine‑room space is at a premium, you require higher native voltage output, or you lack access to qualified electrical maintenance staff.

Use Cases: Commonly installed as the primary auxiliary power source on cargo ships and cruise vessels, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. Also used in offshore support vessels where corrosion‑resistant enclosures and reliable voltage regulation are critical.

Manufacturer Datasheet

Datasheet

AMG 0400-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density – 400 kVA in a compact LV frame (400 series)
Robust VPI H‑class insulation provides excellent moisture resistance and long life
Dual axial fan cooling allows flexible air or water‑cooled operation
Integrated ABB UNITROL/GEN AVR options give precise voltage regulation and protection limits
Widely supported by ABB’s global service network and spare‑parts logistics

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and water spray; additional sealing may be required in harsh marine environments
Physical footprint and weight are significant for a 400 kVA unit, limiting installation on space‑constrained vessels
Regular insulation testing (megger, tan‑delta) is mandatory to detect moisture ingress
Bearing lubrication requires periodic inspection; some frames use sealed‑for‑life bearings but others need greasing
Initial capital cost is higher than comparable low‑spec generators from non‑maritime OEMs

Typical Vessels: Container ship (mid‑size)Cruise liner auxiliary powerOffshore supply vesselLNG carrier (auxiliary genset)Naval support / auxiliary ship

Decision Guide: Choose if you need a reliable 400 kVA LV generator with proven ABB service support, high‑temperature insulation and flexible cooling for vessels that operate in temperate to tropical climates. Avoid if the installation area requires a higher IP rating (e.g., IP55), weight/space is at a premium, or budget constraints favor lower‑spec units.

Use Cases: Typically installed as an auxiliary generator on medium‑to‑large merchant ships to supply shipboard hotel loads, emergency power, and support for propulsion auxiliaries. Also used on offshore platform support vessels where robust insulation and dual cooling options are valued for variable ambient conditions.

Manufacturer Datasheet

Datasheet

AMG 0400-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output in a compact LV frame (400 kVA, Frame 400) suitable for many vessel classes
Robust IP44 enclosure and Class‑H VPI insulation resist moisture and salt corrosion
Dual axial fans provide flexible air‑cooling; water‑cooling option available for hot climates
Integrated UNITROL/GEN AVR series with UEL/OEL protection simplifies voltage regulation
Standardised ABB modular platform eases spares logistics and field service

Weaknesses

IP44 rating limits protection against heavy spray or immersion; not suitable for extreme wet‑deck locations
Maximum terminal voltage of 690 V may require step‑up transformers on vessels that standardise on higher bus voltages
Bearing lubrication is not sealed‑for‑life for the larger frame sizes, requiring periodic greasing
Cooling performance can be marginal in very high ambient temperatures (>45 °C) without water‑cooling retrofit
Physical size and weight are comparable to other 400 kVA generators; limited advantage for space‑critical installations

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselRo‑Ro ferry

Certifications: IMO D-2 Type ApprovalDNVGL Classification

Decision Guide: Choose if you need a reliable 400 kVA auxiliary generator with proven ABB service support, IP44 protection and flexible cooling for vessels operating in standard marine environments. Avoid if the installation demands higher voltage busbars, IP65+ exposure, or ultra‑low maintenance bearing designs.

Use Cases: Typically installed as an auxiliary power source on tankers, container ships and cruise vessels to run hotel loads, cargo handling equipment and emergency systems; also used on offshore support vessels where a robust, serviceable generator is required for extended sea periods.

Manufacturer Datasheet

Datasheet

AMG 0400-690V-60Hz-IP55

· low‑voltage synchronous marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give excellent thermal endurance and moisture resistance.
IP55 enclosure protects against salt spray and dust, suitable for offshore service.
Dual axial fans with optional water‑cooling provide flexible cooling for a wide ambient temperature range (-20 °C to +45 °C).
Integrated ABB UNITROL 1000/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation limits.
Sealed‑for‑life bearing design (frame <400) reduces maintenance intervals.

Weaknesses

Maximum output of 400 kVA may be insufficient for larger vessels requiring higher auxiliary power.
Double‑fan arrangement can generate higher acoustic noise compared with single‑fan or water‑cooled designs.
Sealed‑for‑life bearings limit on‑site re‑lubrication; replacement requires factory service.
Class H insulation still demands regular IR and partial‑discharge testing in humid marine conditions.
Initial capital cost is higher than basic low‑spec generators.

Typical Vessels: Offshore supply vesselPlatform supply vesselFerry / Ro‑RoCoastal tankerContainer feederResearch or survey ship

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV class approved marine generatorABS class approved marine generator

Decision Guide: Choose if: you need a robust 400 kVA auxiliary power source with high moisture resistance, flexible air/water cooling and proven ABB voltage regulation for vessels operating in harsh offshore or tropical climates. Avoid if: the vessel requires >500 kVA or higher voltage output, has strict noise limits, or prefers fully serviceable bearing designs.

Use Cases: Typically installed as a main auxiliary generator supplying hotel loads, emergency power, and shore‑power conversion on medium‑size commercial vessels; also used on offshore platforms where reliable, low‑maintenance power is critical.

Manufacturer Datasheet

Datasheet

AMG 0450-400V-50Hz-IP23

· synchronous marine generator

Power (kVA)

450

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal‑grade (Class H) VPI insulation gives excellent durability in hot, humid marine environments.
Modular frame design (400 series) simplifies installation and aligns with standard shipboard spaces.
Dual axial fan cooling provides flexible air‑ or water‑cooled operation for a wide ambient temperature range (-20 °C to +45 °C).
Integrated UNITROL AVR system offers precise voltage regulation and built‑in under/over‑excitation protection.
Widely certified (IMO D‑2, DNV GL, ABS) facilitating class approval and insurance processes.

Weaknesses

IP23 enclosure only protects against dust; additional sealing or splash guards are required in heavy spray zones.
Physical size and weight of a 450 kVA frame can be restrictive on vessels with limited engine‑room space.
Maintenance intensive VPI insulation requires regular IR, tan‑delta and partial‑discharge testing to avoid hidden degradation.
Cooling performance depends on unobstructed airflow; fouling of the axial fans is a common operational issue.
Standard bearing design (sealed‑for‑life up to frame 400) may need greasing or replacement sooner than newer oil‑free alternatives.

Typical Vessels: Product Tanker (10 k–30 k DWT)Container Ship (2 000–5 000 TEU)Bulk Carrier (20 k–50 k DWT)Offshore Supply VesselFerry / Ro‑Ro

Certifications: IMO Type Approval D-2DNV GLABS

Decision Guide: Choose if: you need a proven 450 kVA auxiliary generator with robust H‑class insulation, flexible cooling options and full class approvals for medium‑size commercial vessels. Avoid if: the installation area requires higher splash protection (IP55+), space is severely limited, or you prefer low‑maintenance oil‑free or permanent‑magnet alternatives.

Use Cases: Typically installed as an auxiliary power source to supply hotel loads, cargo handling equipment, dynamic positioning auxiliaries, and emergency power on tankers, container ships and offshore support vessels. The unit can also serve as a standby generator for propulsion plant redundancy where space permits the IP23 enclosure with appropriate splash protection.

Manufacturer Datasheet

Datasheet

AMG 0450-400V-50Hz-IP44

· synchronous marine generator

Power (kVA)

450

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) with VPI vacuum pressure impregnation gives excellent moisture resistance.
IP44 enclosure protects against splashing water and dust in typical ship engine rooms.
Dual‑axial fan cooling allows both air‑only and optional water‑cooled operation, extending operating temperature range (-20 °C to +45 °C).
Modular frame sizes (400–630) simplify installation on a wide variety of vessel layouts.
Integrated UNITROL/GEN AVR provides automatic voltage regulation with under/over‑excitation limits.

Weaknesses

Footprint and weight are relatively large for the 450 kVA rating, limiting use in space‑constrained installations.
IP44 does not protect against full immersion; additional sealing may be required in heavily sprayed areas.
Maintenance intensive – regular insulation resistance, tan‑delta and vibration monitoring are mandatory in marine service.
Maximum output voltage of 400 V may require step‑up transformers for vessels that standardise on higher bus voltages.
Optional water‑cooling adds complexity and potential leak points.

Typical Vessels: Container shipProduct tankerBulk carrierCruise liner (hotel load)Offshore supply vesselDynamic positioning vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose this generator when you need a proven 450 kVA auxiliary power source with robust H‑class insulation, IP44 protection and flexible cooling for vessels up to medium size where space permits. Avoid it on very compact platforms, on ships requiring higher bus voltages without transformers, or where an IP65/66 rating is mandatory.

Use Cases: Typically installed as a main auxiliary generator supplying shipboard hotel services, cargo handling equipment, and DP‑related loads on container, tanker and offshore vessels. It also serves as a standby unit for propulsion generators on cruise ships and as part of redundant power systems on platform supply vessels.

Manufacturer Datasheet

Datasheet

AMG 0450-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 sealed enclosure suitable for harsh salt‑water environments
Class H VPI insulated windings provide high thermal endurance and long life
Dual axial fans allow flexible air or water cooling for a wide ambient range (-20 °C to +45 °C)
Integrated ABB UNITROL/GEN AVR options give precise voltage regulation and protection limits
Sealed‑for‑life bearing design (frame <400) reduces routine maintenance

Weaknesses

Large frame size (Frame 450) may limit installation space on smaller vessels
Insulation condition must be monitored regularly (Megger, PD tests) to avoid moisture‑related failures
Standard output voltage is 400 V; higher ship voltages require step‑up transformers
Initial capital cost is higher than basic low‑cost alternators
Water‑cooled variants need additional plumbing and leak‑prevention checks

Typical Vessels: Medium‑size tankersContainer ships (up to 8 000 TEU)Cruise linersOffshore supply vesselsDynamic positioning support vessels

Certifications: IEC 60034-18-32 (insulation ageing test)IEEE Std 117‑1974 (generator construction)

Decision Guide: Choose if you need a proven, high‑temperature tolerant 450 kVA generator with strong environmental protection and integrated AVR for medium to large commercial vessels. Avoid if vessel space is extremely limited, the power system requires direct >400 V output without transformers, or budget constraints preclude the higher upfront cost.

Use Cases: Typically installed as an auxiliary generator on merchant ships to supply hotel loads, emergency power, and DP support; also used on offshore platforms where reliable, temperature‑resistant generation is critical.

Manufacturer Datasheet

Datasheet

AMG 0450-400V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

H‑class VPI insulation gives excellent resistance to moisture, salt and thermal ageing.
Dual axial fans allow flexible air‑ or water‑cooling configurations to match shipboard cooling systems.
Compact frame size for a 450 kVA unit fits medium‑size vessels without requiring large pedestals.
Sealed‑for‑life bearing option (frame <400) reduces routine maintenance; greasable version available for higher frames.
ABB UNITROL AVR series provides robust voltage regulation with under/over‑excitation protection.

Weaknesses

IP23 rating only protects against splashing, not full dust/water ingress in harsh spray zones.
Fixed 400 V output may need step‑up transformers on vessels standardized on higher voltages.
Greasable bearing version (frame 450) requires periodic re‑greasing, increasing maintenance effort.
Dual fan arrangement can generate higher acoustic noise compared with fully water‑cooled units.
Designed for 60 Hz operation; not directly compatible with 50 Hz ship power systems without conversion.

Typical Vessels: Offshore Supply VesselPlatform Supply VesselSmall Crude Oil TankerContainer FeederCruise Ship Auxiliary PowerNaval Support Vessel

Certifications: DNV GLABS

Decision Guide: Choose this generator when you need a compact, high‑insulation marine alternator with flexible cooling and proven ABB AVR control for vessels operating on 60 Hz, 400 V auxiliary systems. Avoid it if the installation requires full dust‑tight (IP66) protection, operates primarily at 50 Hz, or demands a higher nominal voltage without additional transformers.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply ships and platform support vessels, providing hotel loads, cargo handling equipment power, and emergency backup. Also used on small tankers and cruise ship service decks where space is limited but reliable, moisture‑resistant generation is critical.

Manufacturer Datasheet

Datasheet

AMG 0450-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H VPI insulation allows operation up to +180 °C with excellent moisture resistance.
Dual axial fan design provides flexible air or water cooling for a wide ambient temperature range (-20 °C to +45 °C).
Integrated UNITROL AVR system delivers precise voltage regulation and built‑in under/over‑excitation protection.
IP44 enclosure protects against splashing seawater and salt spray, reducing corrosion risk.
Modular frame (400 series) simplifies installation and maintenance on various vessel layouts.

Weaknesses

IP44 rating does not protect against full submersion; additional sealing may be required in very wet compartments.
Large physical footprint and weight can limit placement on smaller vessels.
Bearings on the 450‑frame are re‑lubricatable, requiring periodic maintenance checks.
Standard output voltage (400 V) may necessitate step‑up transformers for ships operating at higher distribution voltages.
Sensitive to moisture ingress; strict humidity control and regular insulation testing are mandatory.

Typical Vessels: Container shipCrude oil tankerBulk carrierGeneral cargo vesselOffshore supply vesselCruise ship

Decision Guide: Choose if: you need a reliable 450 kVA generator with high‑temperature insulation, flexible cooling options and integrated AVR for vessels operating in harsh marine climates. Avoid if: space, weight or full waterproofing (IP68) are critical constraints, or if the ship requires higher nominal voltages without additional transformers.

Use Cases: The AMG 0450 is typically installed as a main auxiliary generator on medium‑size merchant ships and offshore vessels, supplying shipboard electrical loads such as cargo handling equipment, hotel services, and propulsion auxiliaries while withstanding salt‑laden environments and temperature extremes.

Manufacturer Datasheet

Datasheet

AMG 0450-400V-60Hz-IP55

· marine synchronous generator

Power (kVA)

450

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure resists salt spray and moisture, ideal for harsh marine environments
Class H VPI insulated windings provide excellent thermal endurance and long service life
Dual cooling options (air‑flow with twin axial fans or optional water‑cooling) give flexibility in installation
Integrated UNITROL AVR offers precise voltage regulation and built‑in under/over‑excitation protection
Modular frame design simplifies on‑site installation and future capacity upgrades

Weaknesses

Frame 450 bearings are greasable, requiring periodic lubrication checks unlike sealed‑for‑life units
Designed for 60 Hz operation only, limiting use on vessels standardized to 50 Hz systems
Large physical footprint and weight may be restrictive on smaller hulls or retrofits
Insulation condition must be closely monitored; moisture ingress can degrade VPI performance over time
Requires skilled personnel for routine IR‑testing, bearing temperature monitoring and AVR diagnostics

Typical Vessels: Container ships (mid‑size)Crude oil & product tankersBulk carriersCruise linersOffshore supply vesselsLNG carriers

Certifications: IEC 60034-18-32IEEE Std 117-1974DNV GL

Decision Guide: Choose if you need a robust 400 V, 60 Hz auxiliary power source with high temperature tolerance and IP55 protection for medium‑to‑large vessels. Avoid if the vessel operates on 50 Hz, has severe space/weight constraints, or prefers fully sealed‑for‑life bearing designs.

Use Cases: Provides ship service power for lighting, HVAC, cargo handling equipment, and emergency systems; often installed as a primary auxiliary generator on ocean‑going merchant vessels where reliability and resistance to marine corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 0450-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High short‑circuit rating and robust Class H VPI insulation suitable for harsh marine environments
Dual axial‑fan cooling with optional water‑cooling provides flexibility across climate zones
Integrated UNITROL/GEN AVR options enable precise voltage regulation and built‑in under/over‑excitation protection
Sealed‑for‑life bearing option (frame <400) reduces maintenance intervals
Designed to IEC 60034‑18‑32, IEEE 117‑1974 and DNV standards for reliability and classification

Weaknesses

IP23 rating offers limited protection against water ingress; additional splash‑proofing may be required in heavy spray zones
Fixed 50 Hz frequency limits use on vessels standardized on 60 Hz without a converter
Frame size and weight are relatively large for the 450 kVA output, impacting installation space on smaller ships
Bearing lubrication is required for non‑sealed units, adding routine maintenance tasks
Cooling performance can degrade in high ambient temperature (>45 °C) or when airflow paths become fouled with salt deposits

Typical Vessels: Cruise ship auxiliary powerFerry and Ro‑Ro vesselsOffshore supply vessel (OSV)Medium‑size tanker or bulk carrierContainer feeder

Certifications: DNVABSIEC 60034‑18‑32 compliance

Decision Guide: Choose if you need a reliable 450 kVA auxiliary generator with strong insulation, flexible cooling options and integrated AVR for vessels operating primarily at 50 Hz. Avoid if the installation requires an IP rating higher than IP23, mandatory 60 Hz operation, or ultra‑compact power density.

Use Cases: Typically installed as a main auxiliary generator on medium‑size commercial ships to supply hotel loads, cargo handling equipment and emergency power; also used in shore‑power conversion sets where robust insulation and voltage regulation are critical.

Manufacturer Datasheet

Datasheet

AMG 0450-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) insulation class H provides high dielectric strength and moisture resistance.
IP44 enclosure tolerates splashing water and salt spray typical of marine environments.
Dual axial fans allow flexible air‑cooling and optional water cooling for a wide ambient temperature range (-20 °C to +45 °C).
Integrated compatibility with ABB UNITROL 1000/GEN AVR series simplifies voltage regulation and protection (UEL/OEL).
Standardised frame size (450) enables interchangeable parts across ABB’s LV generator family.

Weaknesses

IP44 is not dust‑tight; additional sealing may be required for extreme exposure.
Frame 450 bearings are regreaseable, requiring periodic lubrication and inspection.
Generator weight and footprint are relatively large for vessels with strict space constraints.
Cooling relies on ambient airflow; performance can degrade in very hot or poorly ventilated engine rooms.
Limited to low‑voltage range (380–690 V); not suitable where medium‑ or high‑voltage generators are required.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselGeneral cargo vessel

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNVABSLloyd's Register

Decision Guide: Choose if you need a proven 450 kVA low‑voltage auxiliary generator with strong moisture resistance, flexible cooling options and seamless integration with ABB AVR units. Avoid if the installation demands IP66 protection, fully sealed bearings, or higher voltage (HV) capability.

Use Cases: Typically installed as the main auxiliary power source for hotel loads, cargo handling equipment, and emergency power on medium‑size merchant vessels; also used in diesel‑electric propulsion support where a reliable synchronous generator is required.

Manufacturer Datasheet

Datasheet

AMG 0450-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure provides strong protection against salt spray and dust.
Class H VPI insulated windings give high thermal endurance and longer service life.
Dual‑axial fan cooling can be configured for air or water, allowing flexible installation in varied ambient conditions.
Integrated ABB UNITROL/GEN AVR options deliver precise voltage regulation and built‑in under/over‑excitation protection.
Standardised frame sizes (400–630) simplify replacement and spare‑parts logistics.

Weaknesses

Physical size and weight are relatively large for a 450 kVA unit, limiting installation in space‑constrained vessels.
Requires skilled personnel for VPI insulation inspection and bearing maintenance; routine testing is more demanding than low‑voltage generators.
Output voltage of 440 V may need step‑up transformation on ships that standardise on higher bus voltages.
Initial capital cost is higher than comparable non‑ABB or lower‑spec generators.

Typical Vessels: Container shipBulk carrierProduct tankerCruise linerOffshore supply vessel

Decision Guide: Choose this generator when you need a robust, high‑temperature‑rated unit with proven IP55 protection and ABB’s advanced AVR for critical auxiliary power on large commercial vessels. Avoid it if deck space or weight limits are tight, or if the vessel operates on a bus voltage that does not match the 440 V output without additional conversion equipment.

Use Cases: Commonly installed as an auxiliary generator in the main engine room of ocean‑going cargo ships and cruise vessels, providing hotel power, emergency supply, and support for cargo handling equipment. Also used on offshore platforms where high reliability and resistance to harsh marine environments are mandatory.

Manufacturer Datasheet

Datasheet

AMG 0450-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High‑temperature class H insulation allows operation up to 180 °C ambient winding temperature.
Dual axial‑fan cooling provides flexible air or water cooling options for varied shipboard environments.
Integrated ABB UNITROL AVR (1000 series) gives precise voltage regulation and built‑in under/over‑excitation limits.
Modular frame design (IP23) simplifies installation on deck or in engine rooms with limited space.
Proven compliance with IEC 60034‑18‑32 and IEEE Std 117, facilitating classification society approval.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and water spray; additional sealing may be required for harsh marine exposure.
Fixed 60 Hz output – not suitable for vessels that need dual‑frequency (50/60 Hz) capability.
450 kVA size still requires a dedicated footprint and heavy foundations compared with compact diesel generators.
Requires regular insulation resistance, tan‑delta and vibration monitoring to prevent moisture‑induced winding degradation.
No built‑in redundancy; a single unit must be paired with another generator for full emergency power compliance.

Typical Vessels: Cruise shipsContainer vessels (US‑flagged, 60 Hz)TankersOffshore supply & platform support vesselsNaval auxiliary ships

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a reliable 450 kVA synchronous generator with high‑temperature insulation, integrated ABB AVR and flexible cooling for a 60 Hz shipboard power system. Avoid if the installation demands higher ingress protection (e.g., IP55), dual‑frequency operation, or ultra‑compact footprint.

Use Cases: Typically installed as an auxiliary/main generator on large passenger ships, container carriers and tankers to supply hotel loads, emergency power and propulsion auxiliaries; also used on offshore support vessels where robust voltage regulation and high thermal tolerance are critical.

Manufacturer Datasheet

Datasheet

AMG 0450-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) tolerates elevated temperatures and harsh marine conditions.
IP44 enclosure protects against splashing water and limited dust ingress, suitable for most engine‑room environments.
Modular LV frame (≈450 kVA) allows straightforward integration and spare‑part commonality across ABB’s AMG series.
Dual axial fans with optional water‑cooling provide flexible cooling strategies for varied ambient conditions.
Integrated UNITROL AVR options (1000 series) give precise voltage regulation and built‑in over/under‑excitation protection.

Weaknesses

Limited to low‑voltage range; not suitable where >690 V or high‑voltage (HV) generators are required.
IP44 does not provide full dust‑tight protection, so additional sealing may be needed in very dusty compartments.
Bearings on the 450 kVA frame are after‑greasable, requiring periodic maintenance unlike sealed‑for‑life units.
Moisture ingress can degrade VPI insulation; regular megger and partial‑discharge testing is mandatory.
Cooling performance depends on clean fan blades and unobstructed airflow; salt buildup can cause overheating if not managed.

Typical Vessels: Medium‑size tankersContainer ships (up to ~10 000 TEU)Bulk carriersOffshore supply vesselsCruise ships and ferries

Decision Guide: Choose this generator when a reliable 450 kVA low‑voltage source with robust IP44 protection, Class H insulation, and ABB’s global support is required for medium‑sized vessels. Avoid it if the installation demands high‑voltage output, dust‑tight (IP65+) enclosures, or a completely sealed‑for‑life bearing design.

Use Cases: The AMG 0450 is typically installed in ship engine rooms to supply auxiliary power for hotel loads, cargo handling equipment, and emergency generators on tankers, container ships, and offshore support vessels. Its modular design fits standard LV generator bays, and the optional water‑cooling variant is often used in tropical climates where ambient temperatures exceed 30 °C.

Manufacturer Datasheet

Datasheet

AMG 0450-440V-60Hz-IP55

· marine synchronous generator

Power (kVA)

450

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give excellent resistance to moisture, salt and thermal ageing
IP55 sealed enclosure protects against spray and dust in marine service
Dual axial fans provide flexible air‑cooling; optional water‑cooling expands operating envelope
Integrated UNITROL/GEN AVR series offers precise voltage regulation and overload protection
Complies with IEC 60034‑18‑32, IEEE 117 and major classification society standards

Weaknesses

Frame 450 size may be bulky for very small vessels or retrofits
Requires regular insulation resistance testing to monitor moisture ingress
Water‑cooling option adds complexity and maintenance of coolant circuits
Designed for 60 Hz operation; not optimal where 50 Hz is mandatory without derating
After‑fettable bearings (frame ≥450) need periodic greasing, increasing service workload

Typical Vessels: Platform Supply Vessel (PSV)Offshore Support VesselSmall Crude Oil TankerContainer FeederCruise Ship auxiliary power unitNaval auxiliary generator

Certifications: IMO D‑2DNV GLABSLloyd's RegisterIEC 60034‑18‑32IEEE Std 117‑1974

Decision Guide: Choose if you need a robust 450 kVA generator with high insulation class, IP55 protection and flexible cooling for offshore or harsh‑environment vessels. Avoid if vessel space/weight is severely limited, the installation must run on 50 Hz only, or you lack capability for periodic bearing greasing and moisture‑resistance testing.

Use Cases: Typically installed as a main auxiliary generator on PSVs and offshore support ships to supply propulsion auxiliaries and hotel loads; used as emergency power on tankers and cruise vessels; can be configured with water cooling for high ambient temperature platforms or remote offshore installations where air cooling alone is insufficient.

Manufacturer Datasheet

Datasheet

AMG 0450-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H vacuum pressure impregnation (VPI) insulation provides high thermal endurance and moisture resistance.
Dual axial fan cooling allows operation with air or water cooling to suit diverse climate zones.
Integrated UNITROL/GEN AVR options give precise voltage regulation and built‑in under/over‑excitation protection.
Sealed‑for‑life bearing design for frames <400 kVA reduces maintenance; greasable bearings are specified for the 450 kVA frame with clear lubrication intervals.
Meets IEC 60034‑18‑32 aging standards and is widely accepted by classification societies.

Weaknesses

IP23 rating only protects against splashing water; not suitable for harsh dust or spray environments without additional shielding.
Greaseable bearing on the 0450 frame requires periodic re‑greasing, increasing maintenance compared with fully sealed units.
Physical footprint and weight are relatively large for a 450 kVA unit, impacting space‑critical installations.
Limited to 690 V low‑voltage bus; ships requiring higher voltage distribution need step‑up transformers.
Moisture ingress can degrade insulation if ventilation ducts are not kept clean in salty environments.

Typical Vessels: Container shipProduct tankerBulk carrierRo‑Ro ferryOffshore supply vessel

Certifications: IEC 60034-18-32 (insulation aging)IEEE Std 117-1974DNV GL approvedABS classed

Decision Guide: Choose if you need a proven 450 kVA generator with robust Class H VPI insulation, flexible cooling options and integrated AVR for medium‑size commercial vessels. Avoid if the installation demands dust‑tight (IP54+) protection, fully sealed bearings without re‑greasing, or direct high‑voltage (≥11 kV) generation.

Use Cases: The AMG 0450 is typically installed as a main auxiliary generator on container ships and tankers to supply shipboard hotel loads and emergency power. It also serves as a secondary generator on Ro‑Ro ferries and offshore supply vessels where redundancy and rapid load response are critical, often paired with diesel engine drives in a genset set.

Manufacturer Datasheet

Datasheet

AMG 0450-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) insulation system (Class H) for high temperature tolerance
Dual axial fans allow flexible air‑cooling or optional water‑cooling for hot climates
IP44 rating provides protection against splashing seawater and dust in typical engine rooms
Sealed‑for‑life bearing option reduces routine maintenance on frames ≤400; after‑greasable bearings available for larger frames
Complies with IEC 60034‑18‑32 and IEEE Std 117, facilitating classification society approvals

Weaknesses

IP44 is not fully dust‑tight (IP66/67 would be required for harsher exposure)
Frames above 400 require after‑greasing of bearings, adding periodic maintenance tasks
Physical footprint and weight are sizable for vessels with limited engine‑room space
Fixed 690 V output may need additional transformers on ships standardized on 440 V or higher voltages
AVR (UNITROL) units must be regularly inspected for corrosion in salty environments

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: DNV GLABSIEC 60034‑18‑32 (insulation ageing standard)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven 450 kVA auxiliary power source with flexible cooling, high‑temperature insulation and class society approvals for medium‑to‑large merchant vessels. Avoid if space is at a premium, you require fully sealed (IP66/67) equipment, or the installation calls for higher voltage levels without additional transformer gear.

Use Cases: Typically installed as an auxiliary generator on large cargo ships to supply hotel loads and emergency power, or as a dedicated main‑generator set on cruise vessels where reliable, high‑output electricity is critical. Also used on offshore support vessels that operate in warm, humid climates requiring robust cooling options.

Manufacturer Datasheet

Datasheet

AMG 0450-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High temperature Class H insulation allows operation up to +180 °C ambient conditions.
IP55 sealed enclosure protects against dust and water spray in harsh marine environments.
VPI (vacuum pressure impregnation) stator/rotor construction gives excellent dielectric strength and moisture resistance.
Flexible cooling options – dual axial fans with optional water‑cooling – suit a wide range of ambient temperatures.
Integrated UNITROL or GEN AVR series provides precise voltage regulation and built‑in under/over‑excitation limits.

Weaknesses

Large physical footprint (frame 400–630 mm) may limit installation in space‑constrained engine rooms.
Weight is substantial; handling requires crane equipment and careful alignment during commissioning.
Maintenance intensive – bearing greasing, insulation resistance testing and AVR inspection are required at regular intervals.
Output voltage limited to 690 V; higher shipboard voltages need step‑up transformers, adding cost and losses.
Sensitive to moisture ingress; strict humidity control and periodic IR/megger testing are mandatory.

Typical Vessels: Crude oil tankerContainer vesselBulk carrierCruise shipOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose this generator when you need a proven 450 kVA auxiliary power source with robust IP55 protection, high‑temperature insulation and flexible cooling for large merchant or offshore vessels. Avoid it if the installation space is limited, weight must be minimized, or the ship’s electrical system requires direct generation above 690 V without additional transformers.

Use Cases: Commonly installed as a main auxiliary generator in the engine room of large commercial ships to supply hotel loads, emergency power and dynamic positioning systems. Also used as a standby unit for critical onboard equipment where reliability and resistance to salt‑water corrosion are paramount.

Manufacturer Datasheet

Datasheet

AMG 0450-690V-60Hz-IP23

· synchronous marine generator

Power (kVA)

450

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H vacuum pressure impregnated (VPI) insulation provides high moisture resistance and long life in salty environments
Dual axial fans with optional water‑cooling give flexible cooling for a wide ambient temperature range (-20 °C to +45 °C)
Integrated ABB UNITROL 1000/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation protection
IP23 enclosure is compact yet protects against solid objects and spray, suitable for deck‑mounted installations
Standardised frame sizes (400–630) simplify spare‑parts logistics across ABB’s marine product line

Weaknesses

IP23 rating does not protect against heavy water ingress; additional sealing may be required in very wet decks
Physical footprint is relatively large for vessels with limited machinery space
Bearings on frames ≥450 require periodic greasing, adding to maintenance workload
Higher initial cost compared with basic low‑cost diesel generators of similar kVA rating
Requires dedicated excitation system (AVR) and proper grounding; improper commissioning can lead to voltage instability

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselRo‑Ro ferry

Certifications: DNV GL Marine ClassificationABS (American Bureau of Shipping)IMO SOLAS Chapter II‑1 complianceIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 450 kVA auxiliary power source with robust Class H VPI insulation, flexible cooling options and integrated ABB AVR for vessels that can accommodate an IP23 deck‑mounted unit. Avoid if the installation requires a fully sealed (IP55+) generator, has severe space/weight constraints, or if lower capital cost is the primary driver.

Use Cases: Typically installed as the main auxiliary generator on medium‑size container and bulk carriers, providing shipboard power for hotel services, cargo handling equipment, and emergency lighting. Also used in cruise ships and offshore supply vessels where high reliability and resistance to marine humidity are critical, or as a standby unit for dynamic positioning systems.

Manufacturer Datasheet

Datasheet

AMG 0450-690V-60Hz-IP44

· low‑voltage marine synchronous generator

Power (kVA)

450

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

VPI vacuum‑pressure impregnated stator/rotor gives excellent moisture resistance and high thermal rating (Class H).
Dual axial‑fan cooling allows air or water cooling to match shipboard environmental conditions.
Integrated UNITROL AVR series provides precise voltage regulation with under/over‑excitation limits.
ABB’s proven marine pedigree – widely installed on tankers, bulk carriers and offshore support vessels.
Sealed‑for‑life bearing option (frame <400) reduces routine maintenance; regreaseable bearings available for frame 450.

Weaknesses

IP44 rating only protects against splashing water; not suitable for fully exposed spray‑zone installations without additional protection.
Frame 450 units require periodic bearing re‑greasing, increasing maintenance workload compared with sealed‑for‑life designs.
Physical size and weight are substantial for vessels with limited engine‑room space (exact dimensions not disclosed).
Limited to 690 V output; ships requiring higher LV bus voltages need step‑up transformers or different generator series.
Moisture control is critical – insulation resistance must be monitored regularly to avoid degradation in humid marine atmospheres.

Typical Vessels: Crude oil tankerProduct tankerContainer shipBulk carrierGeneral cargo vesselOffshore supply vesselFPSO auxiliary power

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL class approvalABS classificationLloyd's Register approval

Decision Guide: Choose if you need a robust 450 kVA LV generator with proven ABB reliability, flexible air/water cooling and high‑temperature insulation for vessels operating in -20 °C to +45 °C environments. Avoid if the installation requires IP66 protection, fully sealed bearings, higher bus voltages (>690 V) or minimal maintenance intervals.

Use Cases: Typically installed as auxiliary generators supplying hotel load, cargo handling equipment and emergency power on tankers, bulk carriers and container ships; also used on offshore support vessels and FPSOs where reliable medium‑power generation and flexible cooling are essential.

Manufacturer Datasheet

Datasheet

AMG 0450-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

450

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High efficiency and robust VPI (vacuum pressure impregnation) insulation class H for long service life in humid marine environments
IP55 sealed enclosure resists salt spray and dust, reducing corrosion risk
Integrated UNITROL 1000 AVR provides precise voltage regulation and built‑in under/over‑excitation protection
Modular design compatible with ABB AMG LV series allows easy installation and future scaling
Sealed‑for‑life or greasable bearing options lower routine maintenance requirements

Weaknesses

Physical size and weight are significant for a 450 kVA unit, limiting suitability on small vessels
Limited to low‑voltage (≤690 V) applications; not appropriate where high‑voltage shipboard distribution is required
Initial capital cost higher than comparable diesel alternators of the same rating
Requires skilled personnel for VPI insulation monitoring and AVR diagnostics
Dedicated ventilation space needed to maintain cooling airflow

Typical Vessels: Container ships (mid‑size)Bulk carriersTankersCruise vesselsOffshore supply & support vessels

Certifications: DNVABSLloyd's Register

Decision Guide: Choose if you need a reliable 450 kVA low‑voltage generator with strong corrosion resistance, integrated AVR and proven ABB service network for medium‑size cargo or offshore vessels. Avoid if the vessel operates on high‑voltage distribution systems, has severe space/weight constraints, or budget prioritises lower upfront cost over long‑term durability.

Use Cases: Main auxiliary power plant on medium‑size cargo ships, emergency generator set for critical onboard systems, shore‑power generation on offshore platforms, and as a standby unit for cruise liners where redundancy and corrosion resistance are paramount.

Manufacturer Datasheet

Datasheet

AMG 0500-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (500 kVA) in a compact frame suitable for medium‑size ships
Class‑H vacuum‑pressure‑impregnated insulation provides excellent thermal endurance and moisture resistance
Dual axial fan arrangement allows flexible air or water cooling for varied operating climates
Integrated UNITROL/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation protection
Standardised mounting and wiring interfaces simplify installation and replacement

Weaknesses

IP23 rating only protects against splashing water; not suitable for heavily spray‑exposed locations without additional shielding
Bearing lubrication is required for frames ≥450 mm, increasing maintenance compared with sealed‑for‑life designs
Maximum ambient temperature limited to +45 °C, restricting use in extreme tropical or desert conditions
Large physical footprint relative to lower‑power modular generators; may require dedicated generator room space
Inspection and testing of insulation must be performed regularly due to sensitivity to marine humidity

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose this generator when a vessel needs a robust 500 kVA auxiliary power source with proven AVR performance, can accommodate an IP23 enclosure, and operates in moderate climates where regular bearing maintenance is acceptable. Avoid it if the installation requires higher ingress protection (e.g., IP55), operation above +45 °C, or a fully sealed‑for‑life bearing solution.

Use Cases: Typically installed as the main auxiliary generator on large merchant vessels to supply propulsion auxiliaries, hotel services, cargo handling equipment and emergency power. Also used as a standby unit on cruise ships where reliable voltage regulation for sensitive hotel loads is critical.

Manufacturer Datasheet

Datasheet

AMG 0500-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) insulation system – Class H suitable for high temperature operation
IP44 rated housing protects against splashing and limited dust in harsh marine environments
Dual axial fans with optional water‑cooling give flexible cooling options from -20 °C to +45 °C
Integrated ABB UNITROL AVR (1000 series) provides precise voltage regulation and built‑in under/over‑excitation limits
Widely supported by ABB service network and condition‑monitoring tools (ABB Ability LEAP)

Weaknesses

Fixed 400 V output may require step‑up transformers for vessels that operate on higher bus voltages
IP44 does not protect against full immersion or heavy dust ingress – additional sealing may be needed in very wet compartments
Maintenance intensive: VPI insulation requires regular IR and partial‑discharge testing, bearing greasing is required for non‑sealed frames
Only 50 Hz design; ships standardized on 60 Hz would need frequency conversion equipment
Physical size and weight are substantial (exact figures not published), limiting installation in confined spaces

Typical Vessels: Offshore supply vesselMedium‑size container shipCruise ferry / passenger linerLNG carrier (auxiliary power)Naval auxiliary or support shipFactory fishing vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL type approval (classification society certified)

Decision Guide: Choose if you need a proven 500 kVA, 400 V synchronous generator with strong ABB after‑sales support, built‑in AVR and flexible cooling for vessels operating at 50 Hz. Avoid if the installation requires 60 Hz operation, higher bus voltage than 400 V without additional transformers, or if space/weight constraints preclude a large frame unit.

Use Cases: Typically installed as the main auxiliary generator on medium‑size commercial ships to supply hotel loads, cargo handling equipment and emergency power. Also used in load‑sharing configurations with other generators or as a standby unit for critical systems on offshore platforms.

Manufacturer Datasheet

Datasheet

AMG 0500-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 sealed enclosure protects against salt spray and dust.
VPI H‑class insulation provides high thermal endurance and moisture resistance.
Dual cooling options (double axial fans with optional water‑cooling) suit a wide temperature range (-20 °C to +45 °C).
Integrated UNITROL 1000 series AVR offers built‑in under/over‑excitation limiters for stable voltage control.
Sealed‑for‑life bearing design (frame <400) reduces routine maintenance.

Weaknesses

Fixed 400 V output may require additional step‑up transformers on vessels that standardise on higher voltages.
Frame size 500 can be bulky for space‑constrained installations.
Requires regular insulation resistance and partial discharge testing in humid marine climates.
Not a variable‑speed or hybrid‑compatible generator, limiting use on diesel‑electric or LNG‑powered ships.

Typical Vessels: TankersBulk carriersContainer shipsCruise liners (hotel power)Offshore supply vessels

Decision Guide: Choose if you need a proven 500 kVA auxiliary generator with strong environmental protection, standard 400 V output and low‑maintenance bearings for conventional diesel‑driven ships. Avoid if the vessel requires higher voltage distribution, variable‑speed generation, or has severe space constraints that cannot accommodate a frame‑500 unit.

Use Cases: Commonly installed as an auxiliary power source on medium‑size merchant vessels to supply hotel loads, cargo handling equipment and emergency power; also used in offshore support ships where robust protection against salt water and vibration is essential.

Manufacturer Datasheet

Datasheet

AMG 0500-400V-60Hz-IP23

· synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (500 kVA) in a compact LV frame suitable for medium‑size vessels
Robust VPI (vacuum pressure impregnation) insulation class H for excellent thermal endurance
Flexible cooling options – double axial fans with optional water‑cooling
Integrated UNITROL AVR series providing precise voltage regulation and protection limits
ABB global service network and proven marine reliability

Weaknesses

IP23 rating offers limited water ingress protection; not suitable for fully wet locations
Frame size and weight can be substantial for vessels with tight space constraints
Bearings may require periodic greasing (non‑sealed frames) increasing maintenance effort
Initial capital cost is higher than basic low‑spec generators
Requires skilled personnel for insulation testing and AVR diagnostics

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: DNVABSIEC 60034-18-32 compliance

Decision Guide: Choose if you need a reliable 500 kVA LV generator with strong insulation, flexible cooling and ABB after‑sales support for medium to large commercial vessels. Avoid if the installation demands fully sealed (IP66/67) equipment, minimal weight/space, or operation at higher voltages beyond the LV range.

Use Cases: Provides primary auxiliary power for hotel loads, cargo handling gear, and emergency generators on container ships, bulk carriers and tankers; also used for shore‑power generation where a stable 400 V supply is required.

Manufacturer Datasheet

Datasheet

AMG 0500-400V-60Hz-IP44

· synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give high thermal endurance and moisture resistance
IP44 enclosure balances protection against splashing with ease of maintenance
Dual axial‑fan cooling (air or optional water) provides flexible temperature control in varied climates
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation limits
Compact LV frame range (400–630) fits vessels with limited engine‑room space

Weaknesses

IP44 does not protect against full water ingress; additional shielding may be required in heavy spray zones
Efficiency drops at low load levels typical of small vessels, making the unit less optimal for <30 % loading
Bearing lubrication is either sealed‑for‑life (frame <400) or requires periodic greasing, adding maintenance tasks
500 kVA output may be oversized for vessels that only need 200–300 kVA, increasing capital cost and space usage
Requires regular insulation resistance testing to guard against moisture‑induced degradation

Typical Vessels: Medium‑size tanker (15‑30 kt)Container ship (up to ~5,000 TEU)Bulk carrier (20–40 kt)Offshore supply vesselCruise ship auxiliary power

Certifications: DNV GL Marine Generator ClassABS Marine Equipment ApprovalLloyd's Register Classification

Decision Guide: Choose if you need a robust 500 kVA auxiliary generator with proven ABB AVR control, have space for an LV frame and operate in typical marine environments where IP44 protection is sufficient. Avoid if the vessel requires higher voltage directly, has severe spray exposure demanding higher ingress protection, or seeks a smaller‑capacity unit to maximise part‑load efficiency.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size tankers and container ships, providing hotel power, cargo handling equipment supply, and emergency power. Also used on offshore support vessels and cruise ships where reliable, low‑voltage generation and easy integration with existing ship electrical systems are required.

Manufacturer Datasheet

Datasheet

AMG 0500-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 housing protects against salt spray and dust in harsh sea environments.
Class H vacuum‑pressure impregnation (VPI) insulation provides excellent thermal endurance and moisture resistance.
Integrated UNITROL AVR system offers precise voltage regulation with under/over‑excitation protection.
Dual axial fans allow flexible air or water cooling, extending operation from –20 °C to +45 °C up to 1000 m altitude.

Weaknesses

Fixed 400 V output may require step‑up transformers for vessels that operate at higher bus voltages.
Size and weight of a 500 kVA frame can be limiting on space‑constrained installations.
Only 60 Hz frequency; not directly suitable for ships standardized on 50 Hz without conversion.
Sealed‑for‑life bearings are limited to frames <400, so larger frames need periodic greasing and inspection.

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierOffshore supply vesselCruise ship

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE 117‑1974

Decision Guide: Choose if you need a proven, low‑maintenance 500 kVA generator with strong environmental protection and ABB global support for auxiliary power on large commercial vessels. Avoid if the vessel requires 50 Hz operation, higher voltage directly from the alternator, or has severe space/weight constraints that favour a more compact unit.

Use Cases: Typically installed as part of the ship’s auxiliary power plant to supply hotel loads, cargo handling equipment, and emergency generators on tankers, container ships and offshore vessels. Also used as a standby source for dynamic positioning systems or as a primary generator on cruise ships where redundancy and reliability are critical.

Manufacturer Datasheet

Datasheet

AMG 0500-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High‑temperature H‑class VPI insulation provides excellent durability in hot, humid maritime environments.
Dual axial fans allow flexible air or water cooling for a wide ambient temperature range (-20 °C to +45 °C).
Comes with ABB UNITROL 1000 series AVR offering precise voltage regulation and built‑in under/over‑excitation limits.
IP23 enclosure protects against splashing water and solid objects >12.5 mm, suitable for deck installations.
Sealed‑for‑life bearing option (frame <400) reduces maintenance intervals.

Weaknesses

IP23 rating does not protect against dust ingress or heavy spray; additional protection may be required in harsh sea spray zones.
Fixed 50 Hz frequency limits use on vessels operating primarily at 60 Hz without a frequency converter.
Physical size and weight of a 500 kVA frame can be restrictive for smaller vessel engine rooms.
Requires regular insulation resistance testing (Megger) to monitor moisture ingress typical for marine service.
Cooling performance depends on unobstructed airflow; fan fouling by salt deposits can reduce efficiency.

Typical Vessels: Medium‑size tankersContainer ships (up to 5,000 TEU)Cruise vesselsOffshore supply vesselsLNG carriers (auxiliary power)

Decision Guide: Choose if you need a proven 500 kVA synchronous generator with robust H‑class insulation, flexible cooling options and integrated ABB AVR for reliable ship service power. Avoid if space is at a premium, the vessel operates primarily on 60 Hz systems, or a fully dust‑tight enclosure (IP54+) is required.

Use Cases: Provides main auxiliary power for ship services such as hotel load, cargo handling equipment, and emergency generation; also used as a dedicated generator for dynamic positioning thrusters or propulsion auxiliaries on medium‑size commercial vessels.

Manufacturer Datasheet

Datasheet

AMG 0500-440V-50Hz-IP44

· marine synchronous generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 500 kVA suitable for large merchant vessels
Class‑H VPI insulated windings provide excellent thermal endurance in harsh marine environments
IP44 enclosure protects against splashing water and salt spray while allowing easy access for maintenance
Optional UNITROL or GEN AVR units give precise voltage regulation and built‑in under/over‑excitation protection
Dual cooling options (axial fans with optional water‑cooling) adapt to varying ambient temperatures

Weaknesses

IP44 rating is not fully sealed; additional protective measures needed in very wet or spray‑heavy zones
Physical size and weight of a 500 kVA frame may limit installation on smaller vessels or retrofits
Maintenance‑intensive insulation monitoring (megger, tan‑delta) required to avoid moisture‑related degradation
Cooling fans can accumulate salt deposits, requiring regular cleaning to maintain airflow
Requires compatible drive engine speed and coupling; not a drop‑in solution for all propulsion arrangements

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise liner (hotel load)Offshore supply vesselLNG carrier (auxiliary power)

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a proven 500 kVA marine generator with high‑temperature insulation, flexible cooling and integrated AVR for large merchant or offshore vessels. Avoid if vessel space is at a premium, the installation environment exceeds IP44 exposure, or you require a lower‑maintenance, sealed‑unit design.

Use Cases: Typically installed as auxiliary power generators on large commercial ships to supply hotel loads, cargo handling equipment, and emergency power; also used on offshore platforms where robust cooling and voltage regulation are critical.

Manufacturer Datasheet

Datasheet

AMG 0500-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 protection suitable for harsh marine environments
Class‑H VPI insulated windings give high thermal endurance
Dual axial fan design allows air or water cooling flexibility
Integrated UNITROL AVR series provides robust voltage regulation and overload protection
Sealed‑for‑life bearing option reduces maintenance on lower frame sizes

Weaknesses

Relatively large footprint (frame 400‑630) may require dedicated generator room
Moisture ingress can degrade insulation; requires regular IR and megger testing
Regreasing bearing versions need periodic lubrication checks
Fixed 440 V output may need additional transformers for vessels with different bus voltages
Complex commissioning procedures demand skilled personnel

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a mid‑size (≈500 kVA) auxiliary generator with high environmental protection, robust voltage regulation and proven ABB service support. Avoid if space is extremely limited, the vessel operates on a bus voltage far from 440 V, or you prefer a low‑maintenance sealed‑bearing unit only available in larger frame sizes.

Use Cases: Commonly installed as an auxiliary generator for hotel loads, emergency power supply, and shore‑power conversion on large commercial vessels. It is also used on offshore support ships where reliable, temperature‑tolerant generation is required under salty, humid conditions.

Manufacturer Datasheet

Datasheet

AMG 0500-440V-60Hz-IP23

· synchronous marine generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 500 kVA suitable for large auxiliary loads
Robust Class H VPI insulation provides excellent thermal endurance and moisture resistance
Dual‑axial fan design allows flexible air or water cooling to match vessel climate conditions
Sealed‑for‑life bearing option reduces maintenance intervals on frames <400
Standard ABB AVR (UNITROL 1000/GEN) integration for precise voltage regulation

Weaknesses

IP23 rating protects against dust and spray only; not fully watertight in heavy sea spray zones
Large physical footprint typical of LV frame 500‑630 series may limit installation space on smaller vessels
Requires regular insulation resistance testing to monitor moisture ingress in marine environment
AVR units are sensitive to corrosion and must be inspected frequently in saltwater atmospheres
Higher initial cost compared with basic low‑power diesel generators

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vesselsLNG carriers (auxiliary power)

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE 117‑1974DNV GL classification approvalABS class approval

Decision Guide: Choose if you need a proven 500 kVA auxiliary generator with flexible cooling, high‑temperature insulation and ABB’s global support network. Avoid on vessels that operate in extreme splash zones requiring IP66+ protection or where space constraints demand a more compact unit.

Use Cases: Typically installed as the main auxiliary power source for hotel load, cargo handling equipment, dynamic positioning systems, and emergency power on large merchant ships; also used in offshore platforms where reliable, high‑capacity generation is required.

Manufacturer Datasheet

Datasheet

AMG 0500-440V-60Hz-IP44

· marine synchronous generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (500 kVA) in a compact LV frame suitable for most auxiliary applications
Dual axial fans with optional water cooling provide flexible thermal management from –20 °C to +45 °C
VPI‑treated stator and rotor insulation (class H) gives excellent resistance to moisture, salt and thermal ageing
Standardised AVR options (UNITROL 1000 series or GEN06/GEN08) enable precise voltage regulation and under/over‑excitation protection
Broad voltage range (380–690 V) allows integration on vessels with different distribution systems

Weaknesses

IP44 rating protects against splashing water only; not suitable for fully sealed compartments exposed to heavy spray or immersion
Physical size and weight are significant for a 500 kVA unit, limiting installation in very space‑constrained engine rooms
Requires skilled maintenance (insulation testing, bearing greasing) and regular vibration/temperature monitoring
Fixed 60 Hz frequency may be incompatible with vessels that operate on 50 Hz electrical systems
Initial capital cost is higher than some low‑cost alternatives from non‑marine‑specific manufacturers

Typical Vessels: Container shipBulk carrierProduct tankerCruise linerOffshore supply vesselLNG/LPG carrier (auxiliary power)

Decision Guide: Choose if you need a proven, high‑output auxiliary generator with flexible cooling options and ABB global service support. Avoid if the installation area demands IP66 protection, strict weight/space limits, or a 50 Hz system without frequency conversion.

Use Cases: The AMG 0500 is normally installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on medium‑size commercial vessels. It can also serve as a secondary generator in redundancy schemes or provide shore‑power support when equipped with appropriate converters.

Manufacturer Datasheet

Datasheet

AMG 0500-440V-60Hz-IP55

· synchronous marine generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) and robust VPI system gives excellent dielectric strength in harsh marine environments
IP55 sealed enclosure protects against salt spray, dust and splashing water
Dual‑axial fan design allows flexible air or water cooling to suit vessel layout
Integrated ABB UNITROL/GEN AVR series provides precise voltage regulation and built‑in under/over‑excitation protection
ABB global service network and proven track record for reliability on commercial vessels

Weaknesses

Fixed 440 V output may require step‑up transformers for ships that operate at higher bus voltages
Physical size and weight of a 500 kVA frame can be limiting on space‑constrained hulls
Requires regular insulation resistance (IR) testing and vibration monitoring to prevent moisture‑related degradation
Only rated for 60 Hz; a separate 50 Hz variant is needed for vessels operating on 50 Hz grids
Initial capital cost higher than some low‑cost Chinese alternatives

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrierNaval auxiliary

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL class approval for marine generatorsABS approved equipment

Decision Guide: Choose if you need a reliable 500 kVA auxiliary power source with high dielectric strength, IP55 protection and flexible cooling on a vessel that runs on 60 Hz. Avoid if the installation space is extremely limited, the ship operates only on 50 Hz, or budget constraints favor lower‑spec generators.

Use Cases: Typically installed as an auxiliary generator for hotel load and emergency power on large commercial vessels, providing continuous power to propulsion auxiliaries, cargo handling equipment, and critical safety systems. Also used on offshore platforms where robust protection against salt water and high temperature tolerance are required.

Manufacturer Datasheet

Datasheet

AMG 0500-690V-50Hz-IP23

· low‑voltage marine synchronous generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal class H insulation (VPI) gives excellent durability in hot, humid marine environments
Dual cooling options – axial fans with optional water‑cooling – allow operation from -20 °C to +45 °C
Integrated ABB UNITROL AVR provides precise voltage regulation and built‑in under/over‑excitation limits
IP23 enclosure meets marine splash‑proof requirements while keeping the unit compact for engine rooms
Widely supported by ABB’s global service network and approved by major classification societies

Weaknesses

IP23 offers only splash protection; not suitable where dust‑tight (IP54+) enclosures are required
Fixed 690 V low‑voltage output limits use on vessels that standardise on higher voltages (e.g., 11 kV)
Four‑pole, 50 Hz design may need a different model for 60 Hz applications without redesign
Large bearing housing requires regular lubrication checks and can be heavy for small craft
VPI insulation inspection is specialised; degradation due to moisture must be closely monitored

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierCruise linerOffshore supply vesselNaval auxiliary

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL class approvalABS class approvalLloyd’s Register approval

Decision Guide: Choose if: you need a proven 500 kVA low‑voltage generator with robust VPI insulation, dual cooling and ABB AVR for main or emergency power on large merchant vessels. Avoid if: the installation requires dust‑tight (IP5X) protection, higher voltage output, or a compact unit for small craft where weight and space are critical.

Use Cases: Typically installed as the primary auxiliary generator on large tankers, container ships and cruise liners to supply hotel loads and emergency power; also used as standby generators for DP‑supported offshore vessels and naval support ships where reliable voltage regulation is essential.

Manufacturer Datasheet

Datasheet

AMG 0500-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) with vacuum pressure impregnation (VPI) for superior moisture resistance
Dual cooling options – air‑cooled with twin axial fans or optional water‑cooling – suitable for a wide ambient temperature range
Sealed‑for‑life bearing design (frame <400) reduces maintenance intervals
IP44 enclosure provides splash protection in corrosive marine atmospheres
Integrated UNITROL/GEN AVR options enable precise voltage regulation and overload protection

Weaknesses

Large physical footprint and weight typical of 500 kVA generators may limit installation on space‑constrained vessels
IP44 rating does not protect against dust ingress; additional sealing may be required in very harsh environments
Requires regular insulation resistance testing (Megger) to monitor VPI condition, adding inspection workload
Fixed voltage output (690 V) may necessitate step‑up/step‑down transformers for vessels with different bus voltages
Initial capital cost is higher than lower‑rated or less robust alternatives

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel (OSV)Ro‑Ro ferry

Certifications: ABS Type ApprovalDNV GL ClassificationIEC 60034-18-32 (insulation ageing)IMO SOLAS Chapter II‑1 compliance

Decision Guide: Choose if you need a reliable 500 kVA auxiliary power source with high moisture‑resistant insulation, flexible cooling and robust bearing life for medium to large vessels operating in corrosive sea conditions. Avoid if vessel space is severely limited, the required bus voltage differs significantly from 690 V, or budget constraints preclude the higher upfront cost.

Use Cases: The generator is typically installed as part of a ship’s auxiliary power plant to supply hotel loads, start main propulsion engines, and provide emergency power on container ships, tankers, cruise vessels and offshore support platforms where continuous operation in salty, humid environments is required.

Manufacturer Datasheet

Datasheet

AMG 0500-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) and VPI winding technology give excellent thermal endurance and moisture resistance in harsh marine environments.
IP55 enclosure protects against dust and water jets, reducing maintenance caused by salt‑water ingress.
Sealed‑for‑life bearing design (frame <400) eliminates routine greasing and extends service intervals.
Dual axial fans provide flexible air cooling; optional water‑cooling allows operation in high ambient temperatures up to +45 °C.
Integrated UNITROL/GEN AVR series offers precise voltage regulation with under/over‑excitation limiters.

Weaknesses

Fixed 690 V output limits direct integration into low‑voltage (380 V) distribution without a step‑down transformer, adding cost for some vessel power systems.
Large physical footprint (frame 400–630) may require substantial engine‑room space on smaller ships.
H‑class insulation and VPI process increase initial purchase price compared with lower‑class generators.
Maintenance of the dual‑fan system demands regular cleaning to prevent salt‑crystal buildup, especially in tropical routes.
AVR units are sensitive to moisture; additional sealing or climate control may be required in very humid compartments.

Typical Vessels: Container shipsCrude oil and product tankersBulk carriersCruise linersOffshore supply vessels (OSV)LNG/LPG carriers

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL Type ApprovalABS Classification approvalLR (Lloyd’s Register) approval

Decision Guide: Choose if: you need a robust 500 kVA generator with high moisture resistance, sealed bearings and flexible cooling for vessels operating in hot or highly saline environments; you have sufficient engine‑room space and can accommodate the 690 V bus. Avoid if: your vessel power system is limited to low‑voltage distribution without step‑down capability, weight/space constraints are critical, or budget sensitivity makes lower‑class generators preferable.

Use Cases: The AMG 0500‑690V‑50Hz‑IP55 is typically installed as the main auxiliary generator on large ocean‐going vessels where continuous, high‑quality power is required for propulsion auxiliaries, cargo handling equipment and hotel loads. It is also favoured on offshore support ships that operate in tropical waters, because its IP55 protection and H‑class insulation tolerate frequent exposure to salt spray and elevated ambient temperatures.

Manufacturer Datasheet

Datasheet

AMG 0500-690V-60Hz-IP23

· Synchronous generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (500 kVA) in a compact LV frame (400–630) suitable for many ship classes
Robust VPI insulation (class H/F) provides excellent moisture resistance and long life
Flexible cooling options – dual axial fans with optional water‑cooling for hot climates
Sealed‑for‑life bearings on frames <400 kN·m reduce maintenance intervals
ABB Ability LEAP condition monitoring integration enables predictive maintenance

Weaknesses

IP23 rating offers limited protection against water spray; additional sealing may be required in harsh marine environments
Physical size and weight are significant for a 500 kVA unit, impacting engine‑room layout
Initial capital cost is higher than many competing manufacturers
Requires skilled personnel for AVR (UNITROL) tuning and periodic insulation testing
Ventilation ducts can accumulate salt deposits, demanding regular cleaning

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrierNaval auxiliary ship

Certifications: ABSDNV GLLloyd's RegisterIEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a proven 500 kVA marine generator with flexible cooling, robust H‑class insulation and global ABB support/condition monitoring. Avoid if engine‑room space or weight is at a premium, or if a higher IP rating (e.g., IP55) is mandatory for the installation environment.

Use Cases: Typically installed as an auxiliary/main power source in large merchant vessels to supply hotel load, cargo handling equipment and emergency systems; also used on offshore platforms and naval support ships where reliable, high‑capacity generation and remote condition monitoring are required.

Manufacturer Datasheet

Datasheet

AMG 0500-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H with VPI (vacuum pressure impregnation) provides excellent moisture resistance and thermal endurance.
Flexible cooling – dual axial fans plus optional water‑cooling – suitable for ambient temperatures from -20 °C to +45 °C.
Integrated ABB UNITROL AVR series offers precise voltage regulation with built‑in under/over‑excitation limits.
Compact LV frame (400–630) simplifies installation on medium‑size vessels while meeting class society standards.
Compliance with IEC 60034‑18‑32 and IEEE Std 117‑1974 ensures long service life in harsh marine environments.

Weaknesses

IP44 rating only protects against splashing water; not suitable for fully sealed compartments exposed to heavy spray or immersion.
Physical size and weight of a 500 kVA unit may be restrictive on small vessels with limited engine‑room space.
Maintenance of VPI‑impregnated windings requires specialized testing (megger, partial discharge) and skilled personnel.
Dual‑fan cooling can generate higher acoustic noise compared with water‑cooled alternatives.
Replacement parts for the specific AVR unit may have longer lead times.

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselFPSO

Certifications: IEC 60034-18-32IEEE 117-1974DNV classification

Decision Guide: Choose if you need a robust 500 kVA generator with high‑temperature class H insulation, flexible cooling options and proven class‑society approval for medium to large vessels. Avoid if space is severely limited, a higher IP rating (e.g., IP55) is required, or maintenance resources for VPI windings are unavailable.

Use Cases: Typically installed as the main auxiliary power source on tankers, container ships and bulk carriers, providing hotel load and emergency power; also used on offshore supply vessels and FPSOs where reliable high‑capacity generation and class‑society compliance are mandatory.

Manufacturer Datasheet

Datasheet

AMG 0500-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 protection suitable for harsh marine environments with salt spray.
Class H VPI insulation provides high temperature tolerance and long service life.
Integrated UNITROL AVR (1000 series) offers precise voltage regulation and built‑in under/over‑excitation limits.
Dual axial fans allow flexible air or water cooling to match vessel installation constraints.
Complies with IEC 60034‑18‑32 and IEEE 117‑1974, facilitating classification society approval.

Weaknesses

Physical size and weight are substantial for a 500 kVA unit, requiring ample engine room space.
Bearings on frames ≥450 are not sealed‑for‑life and need periodic greasing or re‑greasing.
VPI insulation performance can degrade if moisture ingress occurs; requires diligent inspection.
Only 690 V output – higher voltage ships must use step‑up transformers, adding cost and losses.
Initial capital cost is high compared with lower‑rated generators.

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117-1974

Decision Guide: Choose if you need a robust 500 kVA auxiliary generator with proven IP55 protection, Class H insulation and integrated AVR for vessels that can accommodate its size and provide regular bearing maintenance. Avoid if the installation space is limited, you require higher direct output voltage, or you prefer a fully sealed‑for‑life bearing design to minimise maintenance.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size merchant ships, providing shipboard power for hotel loads and emergency systems; also used as a standby unit for critical equipment where high reliability in corrosive marine conditions is required.

Manufacturer Datasheet

Datasheet

AMG 0560-400V-50Hz-IP23

· synchronous marine generator

Power (kVA)

560

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (560 kVA) in a compact LV frame suitable for deck installation
Robust VPI‑sealed stator/rotor with Class H insulation for high temperature tolerance
Dual axial fan cooling allows air or water‑cooled operation, enhancing flexibility
Integrated UNITROL AVR provides precise voltage regulation and built‑in under/over‑excitation limits
ABB global service network and proven marine track record

Weaknesses

IP23 rating protects only against solid objects >12.5 mm; not dust‑tight, limiting use in very harsh environments
Fixed 400 V output may require step‑up transformers for vessels that standardise on higher LV levels
Size and weight of a 560 kVA frame can be restrictive on small or space‑constrained vessels
Requires regular insulation testing (Megger, tan‑delta) due to marine humidity and salt exposure
Cooling performance depends on clean airflow; fan fouling by salt deposits can reduce capacity

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (hotel load)Offshore supply vesselNaval auxiliary / support ship

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 560 kVA LV generator with ABB’s integrated AVR, dual cooling options and proven marine insulation; ideal for vessels that operate in standard 400 V auxiliary systems and have space for an IP23 deck‑mounted unit. Avoid if the vessel requires dust‑tight (IP54+) protection, higher voltage output without additional transformers, or a significantly smaller footprint.

Use Cases: Typically installed as the main auxiliary generator on medium‑size cargo vessels to supply propulsion auxiliaries, hotel services and cargo handling equipment; also used as emergency power sources on tankers and cruise ships where rapid start‑up and robust voltage regulation are critical.

Manufacturer Datasheet

Datasheet

AMG 0560-400V-50Hz-IP44

· Marine synchronous generator

Power (kVA)

560

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High temperature class H insulation allows operation up to +180 °C ambient conditions.
VPI (vacuum pressure impregnation) stator/rotor construction provides excellent moisture resistance.
Dual‑axial fan cooling can be configured for air or water cooling, enhancing flexibility in installation.
Integrated UNITROL or GEN AVR options give precise voltage regulation and built‑in over/under‑excitation limits.
Modular frame (400–450) simplifies transport, handling and future capacity upgrades.

Weaknesses

IP44 rating only protects against splashing water; not suitable for heavily sprayed or dusty compartments without additional shielding.
Frames above 400 kVA require greasable bearings, increasing maintenance compared with sealed‑for‑life units.
Physical footprint is relatively large for a 560 kVA unit, limiting placement on space‑constrained vessels.
Cooling performance depends on clean fan blades and unobstructed airflow; fouling can quickly degrade efficiency.
Requires regular insulation resistance testing to monitor moisture ingress in the high‑class winding.

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierBulk carrier

Decision Guide: Choose if you need a proven 560 kVA auxiliary generator with robust H‑class insulation, flexible cooling options and integrated AVR for vessels that can accommodate its size and provide routine bearing lubrication. Avoid if the installation area demands higher ingress protection (e.g., IP65) or completely sealed‑for‑life bearings, or if space constraints preclude a large frame.

Use Cases: Commonly installed as the main auxiliary power source for hotel loads, cargo handling equipment, and emergency generators on medium‑to‑large commercial vessels; also used in hybrid propulsion schemes to supply electrical power when diesel engines are offline.

Manufacturer Datasheet

Datasheet

AMG 0560-400V-50Hz-IP55

· marine synchronous generator

Power (kVA)

560

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure protects against dust and water spray in harsh marine environments
Class H VPI‑impregnated windings give excellent thermal endurance and long service life
Dual cooling options (air‑axial fans or water‑cooled) allow flexible installation on various vessel layouts
Integrated UNITROL 1000/GEN AVR provides precise voltage regulation with under/over‑excitation limits
ABB global support network and proven class approvals simplify maintenance and compliance

Weaknesses

Designed for 50 Hz operation only – not suitable where 60 Hz is required
Physical size (frame 400) may be restrictive in vessels with limited generator room
Requires regular bearing lubrication checks and fan cleaning to avoid moisture‑induced failures
Higher initial capital cost compared with lower‑spec generators from budget manufacturers
Complex VPI insulation inspection demands specialised testing equipment

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel (OSV)Naval auxiliary ship

Certifications: DNV GL class approvalABS class approvalIEC 60034‑18‑32 insulation ageing standardIEEE Std 117‑1974 marine generator standard

Decision Guide: Choose if you need a robust 560 kVA auxiliary generator with IP55 protection, Class H insulation and ABB’s worldwide service support for vessels operating at 50 Hz. Avoid if the installation is space‑constrained, requires 60 Hz output, or budget constraints favour a lower‑spec unit.

Use Cases: Typically installed as an auxiliary power source for hotel loads, emergency generators, or shaft‑generator drive on medium‑to‑large commercial vessels where reliable, continuous electricity is critical and the environment demands high corrosion resistance.

Manufacturer Datasheet

Datasheet

AMG 0560-400V-60Hz-IP23

· synchronous marine generator

Power (kVA)

560

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings provide high thermal endurance and moisture resistance.
Dual axial fans with optional water‑cooling give flexible cooling for varied operating climates.
Integrated UNITROL AVR offers precise voltage regulation and built‑in under/over‑excitation protection.
ABB global service network ensures spare‑part availability and field support.
Modular frame (560) fits standard low‑voltage generator rooms on medium‑size vessels.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; additional sealing may be required in harsh spray environments.
Physical footprint and weight are sizable for a 560 kVA unit, limiting installation in space‑constrained ships.
Sealed‑for‑life bearings are limited to frames <400; this model may require greased bearings and periodic re‑greasing.
Initial capital cost is higher than many generic off‑brand generators of similar rating.
Regular insulation resistance testing is mandatory due to marine humidity exposure.

Typical Vessels: Product TankerBulk CarrierContainer Ship (mid‑size)Ro‑Ro / FerryOffshore Supply Vessel

Decision Guide: Choose if you need a reliable 560 kVA LV generator with high‑temperature Class H insulation, ABB’s integrated AVR and worldwide support for medium‑size vessels. Avoid if the installation space is limited, a higher IP rating (e.g., IP55) is mandatory, or budget constraints favour lower‑cost alternatives.

Use Cases: Provides primary auxiliary power for hotel loads, cargo handling equipment and navigation systems on mid‑size commercial ships; can also serve as a standby generator in hybrid propulsion schemes where rapid voltage regulation is required.

Manufacturer Datasheet

Datasheet

AMG 0560-400V-60Hz-IP44

· synchronous marine generator

Power (kVA)

560

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density (560 kVA) in a compact LV frame suitable for medium‑size vessels
Class H insulation and VPI vacuum pressure impregnation provide excellent moisture resistance and long service life
IP44 enclosure protects against splashing seawater while allowing easy access for maintenance
Flexible cooling options – dual axial fans with optional water‑cooling – adapt to varying ambient conditions
Integrated UNITROL AVR (1000 series) offers precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

IP44 rating does not protect against dust ingress; harsher environments may require IP65 units
Fixed 400 V output may necessitate step‑up transformers for vessels that operate on higher bus voltages
Large cooling fans can be prone to salt‑crystal buildup, requiring regular cleaning
Insulation monitoring is critical in marine service – periodic megger and PD testing add maintenance workload
Weight and footprint are larger than low‑power diesel generators, limiting installation on very small craft

Typical Vessels: Platform Supply Vessel (PSV)Offshore Support Vessel (OSV)Medium‑size TankerContainer FeederCruise Ship auxiliary power system

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117-1974

Decision Guide: Choose if you need a reliable 560 kVA auxiliary generator with proven ABB service support, robust H‑class insulation and flexible cooling for offshore or merchant vessels operating at 400 V. Avoid if the installation space is severely constrained, higher bus voltage (>600 V) is required without a transformer, or an IP65 enclosure is mandatory for dust‑heavy environments.

Use Cases: Commonly installed as main auxiliary power on PSVs and OSVs to run hotel loads, cargo handling equipment, and emergency systems; also used on medium tankers and cruise ships where a stable 400 V supply is required for propulsion auxiliaries and shore‑power conversion.

Manufacturer Datasheet

Datasheet

AMG 0560-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 enclosure suitable for harsh marine environments
Class H insulation allows operation up to +180 °C ambient temperature
Dual‑axial fan cooling with optional water‑cooling gives flexible thermal management
Integrated UNITROL AVR (1000 series) provides precise voltage regulation and protection limits
VPI vacuum pressure impregnated windings give high dielectric strength and moisture resistance

Weaknesses

Relatively large footprint and weight for a 560 kVA unit, impacting space‑critical vessels
Requires skilled maintenance (IR testing, bearing greasing, AVR diagnostics) to preserve reliability
Standard rating is 60 Hz only; vessels requiring 50 Hz must use a different model or frequency converter
Higher initial capital cost compared with basic low‑cost alternators
Sensitive to moisture ingress if seals are compromised – regular inspection mandatory

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrier (hotel load)Naval auxiliary / support ship

Certifications: IMO D‑2 (IEC 60034‑18‑32 compliance)ABS Type Approval

Decision Guide: Choose if you need a medium‑size (≈560 kVA) generator with proven reliability, IP55 protection and Class H insulation for high ambient temperatures, and you have the space for its footprint. Avoid if vessel layout is extremely tight, budget constraints are primary, or a 50 Hz rating is required.

Use Cases: Commonly installed as an auxiliary/main‑generator set on large merchant vessels to supply hotel loads, emergency power, and support offshore platform operations; also used in cruise ships for steady hotel electricity and in naval auxiliaries where robust environmental protection is essential.

Manufacturer Datasheet

Datasheet

AMG 0560-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (560 kVA) in a compact LV frame series (400–630).
Class H insulation permits operation up to +180 °C ambient, extending service life in hot climates.
Dual axial fans allow flexible air‑ or water‑cooling configurations for varied engine‑room layouts.
Integrated UNITROL AVR (1000 series) provides precise voltage regulation with UEL/OEL protection.
IP23 enclosure is suitable for typical engine‑room environments while still allowing easy access for maintenance.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; additional sealing may be required in heavy spray zones.
VPI (vacuum pressure impregnation) insulation can be sensitive to moisture ingress, demanding regular IR and PD testing.
Bearings are sealed‑for‑life only up to frame 400; larger frames need periodic greasing, increasing maintenance workload.
Single‑unit design offers no inherent redundancy – a failure results in total loss of that generator’s capacity.
Physical dimensions and weight are larger than some compact diesel‑driven alternators with integrated control packages.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Certifications: IEC 60034-18-32DNV GL

Decision Guide: Choose this generator when a reliable 560 kVA synchronous source with high temperature tolerance and flexible cooling is required for medium‑size vessels operating in warm climates. Avoid it if the installation demands dust‑tight (IP5X/IP6X) protection, minimal maintenance intervals, or built‑in redundancy without adding a second unit.

Use Cases: Commonly installed in main‑engine rooms of container and bulk carriers to supply auxiliary power for hotel loads, cargo handling equipment, and emergency generators. Also used on offshore supply vessels where high‑temperature insulation and robust voltage regulation are critical during prolonged operations in tropical waters.

Manufacturer Datasheet

Datasheet

AMG 0560-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High reliability with Class H VPI insulation resistant to moisture and thermal ageing
Dual‑axial fan system allows air or water cooling for flexible installation in varied climates
Sealed‑for‑life bearings (frame <400) reduce routine maintenance compared with greased units
UNITROL 1000 series AVR provides precise voltage regulation and built‑in over/under‑excitation limits
IP44 enclosure meets typical marine exposure to splashing and salt spray

Weaknesses

IP44 rating does not protect against heavy dust ingress; additional sealing may be required in dusty environments
Fixed 440 V output may need step‑up transformers for vessels standardising on higher bus voltages
Physical footprint is sizable for a 560 kVA unit, impacting space‑critical installations
Moisture‑sensitive VPI insulation still requires regular IR and partial‑discharge testing in humid climates
Cooling performance can be limited in very high ambient temperatures without water‑cooling retrofit

Typical Vessels: Container shipRo‑Ro / ferryCruise linerOffshore supply vesselNaval auxiliaryLNG carrier (hotel power)Platform supply vessel

Certifications: IEC 60034-18-32 (insulation ageing test)IEEE Std 117‑1974 (generator safety)DNVGL Type Approval for marine generatorsABS Class approval

Decision Guide: Choose if you need a proven 560 kVA auxiliary generator with robust ABB support, sealed bearings and VPI H‑class insulation for long sea periods. Avoid if your vessel requires higher bus voltage directly from the generator, has severe dust exposure, or demands a more compact footprint than the AMG series provides.

Use Cases: Typically installed as the main auxiliary power source on medium‑size merchant vessels, providing hotel load, cargo handling equipment power and emergency standby generation; also used on offshore platforms where reliable, low‑maintenance power is critical.

Manufacturer Datasheet

Datasheet

AMG 0560-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H VPI insulated windings give excellent moisture resistance and long service life in harsh marine environments.
IP55 sealed enclosure protects against salt spray, dust and splashing water, reducing maintenance frequency.
Dual axial fans with optional water‑cooling provide flexible cooling for a wide ambient temperature range (‑20 °C to +45 °C).
Integrated UNITROL AVR delivers precise voltage regulation and built‑in under/over‑excitation protection.
Sealed‑for‑life bearing design (frame <400) eliminates routine greasing and improves reliability.

Weaknesses

Fixed‑speed synchronous operation limits efficiency on vessels that could benefit from variable‑speed generation.
Weight and footprint are relatively high compared with newer oil‑free or permanent‑magnet alternatives.
Requires regular insulation resistance testing (Megger) to monitor moisture ingress, adding inspection workload.
Only 50 Hz version is standard; a 60 Hz variant must be ordered separately.
Cooling performance may be marginal in very high ambient temperatures without water‑cooling retrofit.

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D-2 (fire protection)IEC 60034‑18‑32 (insulation ageing)DNV GL Type ApprovalABS ClassificationLloyd's Register Approval

Decision Guide: Choose if you need a proven, high‑temperature‑resistant 560 kVA auxiliary generator with low maintenance bearings and built‑in AVR for vessels operating in harsh salt‑water environments. Avoid if space is at a premium, the vessel prefers variable‑speed or hybrid generation, or the operational profile demands higher efficiency than a fixed‑speed synchronous machine can provide.

Use Cases: Typically installed as an auxiliary power source on large merchant ships and cruise vessels to supply hotel loads, cargo handling equipment, and emergency generators. The robust design makes it suitable for ships that operate in tropical or arctic regions where exposure to salt spray and temperature extremes is common.

Manufacturer Datasheet

Datasheet

AMG 0560-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H (VPI) provides excellent thermal endurance in harsh marine environments
IP23 enclosure allows deck‑mounting while protecting against dust and limited splashing
Flexible cooling options – dual axial fans with optional water‑cooling – adapt to varying ambient conditions
Sealed‑for‑life bearings (frame <400) reduce routine lubrication maintenance
Integrated ABB UNITROL AVR system offers precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

IP23 rating does not protect against heavy water ingress; unsuitable for fully wet locations
Physical footprint and weight are relatively large compared to compact diesel generators of similar output
Requires skilled personnel for VPI insulation testing and AVR diagnostics
Only 60 Hz version; vessels standardized on 50 Hz would need a different model
Optional water‑cooling adds complexity and potential leak points

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vessel

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL ClassificationABS ClassificationLloyd's Register

Decision Guide: Choose if you need a robust 560 kVA auxiliary generator with proven thermal performance, flexible cooling and low‑maintenance bearings for large merchant vessels operating in hot, salty environments. Avoid if space is at a premium, the installation area is exposed to heavy water spray, or the vessel requires a 50 Hz system.

Use Cases: Commonly installed as main auxiliary power source on large cargo and passenger ships, providing hotel load, cargo‑handling equipment power, and emergency generation; also used in offshore platforms where reliable, high‑temperature tolerant generators are required.

Manufacturer Datasheet

Datasheet

AMG 0560-440V-60Hz-IP44

· synchronous marine generator

Power (kVA)

560

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density in the LV (400–690 V) range – 560 kVA in a compact frame.
Robust VPI (vacuum pressure impregnation) H‑class insulation for long life in humid, salty environments.
Dual cooling options (double axial fans with optional water‑cooling) to suit varied ambient conditions.
Integrated ABB UNITROL AVR series provides precise voltage regulation and built‑in under/over‑excitation protection.
Widely supported by ABB’s global service network and spare parts logistics.

Weaknesses

IP44 enclosure offers only limited ingress protection; not suitable for fully sealed compartments exposed to heavy spray or immersion.
Fixed 440 V output may require step‑up transformers on vessels that standardise on higher distribution voltages (e.g., 6.6 kV).
Physical footprint and weight typical of LV generators can limit installation space on smaller vessels.
Requires regular moisture and insulation monitoring to prevent degradation of the VPI system in marine service.
Cooling performance may be constrained in very high ambient temperatures without supplemental water‑cooling.

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (hotel load)Offshore supply vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL classification approvalABS Type ApprovalLloyd's Register certification

Decision Guide: Choose if you need a reliable 560 kVA LV generator with proven ABB VPI insulation, flexible cooling and strong after‑sales support for vessels operating in typical marine climates. Avoid if the installation demands higher voltage output, fully sealed IP66 protection, or extremely compact weight/size constraints.

Use Cases: Main auxiliary power on medium‑sized cargo ships, emergency generator sets for hotel loads on cruise vessels, standby generation for offshore platforms, and as part of a redundant power plant on tankers where 440 V distribution is standard.

Manufacturer Datasheet

Datasheet

AMG 0560-440V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H and VPI vacuum‑pressure‑impregnation give excellent thermal endurance and moisture resistance.
IP55 sealed enclosure protects against salt spray and dust, suitable for offshore and high‑humidity operations.
Dual axial fan design allows flexible air or water cooling, maintaining temperature stability over -20 °C to +45 °C ambient range.
Integrated ABB UNITROL 1000/GEN AVR series provides precise voltage regulation with UEL/OEL protection.
Sealed‑for‑life bearings (frame <400) reduce routine maintenance and downtime.

Weaknesses

Physical footprint and weight are larger than comparable diesel engines of similar rating, impacting space‑critical installations.
Requires skilled personnel for AVR tuning and periodic insulation testing (Megger, PD analysis).
Standard output voltage is 440 V; ships using higher medium‑voltage distribution may need additional step‑up transformers.
Initial capital cost is higher than basic low‑cost generators of similar kVA rating.

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise linerLNG/LPG carrier

Certifications: IMO Type Approval (D‑2)DNV GLABSLR

Decision Guide: Choose if you need a robust 560 kVA generator with high temperature and moisture tolerance, IP55 protection, and integrated ABB AVR for reliable hotel‑load or emergency power on vessels operating in harsh marine environments. Avoid if vessel space is extremely limited, the electrical system requires higher than 440 V medium voltage without transformer, or crew lack experience with synchronous generator maintenance.

Use Cases: Provides primary auxiliary power for shipboard hotel services, emergency generators, dynamic positioning thruster support, and hybrid propulsion boost on large commercial vessels where dependable, low‑maintenance generation is critical.

Manufacturer Datasheet

Datasheet

AMG 0560-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (560 kVA) at a relatively low voltage (690 V) suitable for auxiliary power distribution
Robust H‑class VPI insulation system with proven resistance to moisture and thermal ageing
Modular frame sizes (400–630 series) allow flexible installation on various vessel layouts
Integrated AVR options (UNITROL 1000, GEN06/GEN08) provide precise voltage regulation and protection limits
IP23 enclosure meets marine deck‑mount standards while allowing easy access for inspection

Weaknesses

IP23 rating does not protect against water jets or heavy dust; additional sealing may be required in harsh environments
Physical size and weight are substantial, limiting use on vessels with tight space constraints
Requires regular bearing lubrication (sealed‑for‑life up to frame 400, greasable thereafter)
Cooling performance depends on clean airflow or water circuit; fouling can lead to overheating
Higher voltage step‑up transformers may be needed for shipboard distribution beyond 690 V

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if: you need a reliable ~500‑600 kVA auxiliary generator with proven ABB service support, can accommodate the deck‑mounted footprint and have access for regular bearing/lubrication checks. Avoid if: space is extremely limited, you require a fully sealed (IP55+) unit, or your electrical system operates at higher voltages without step‑up conversion.

Use Cases: Typically installed as main auxiliary power on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency systems; also used as standby generators on offshore platforms where robust insulation and flexible cooling are essential.

Manufacturer Datasheet

Datasheet

AMG 0560-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (560 kVA) in a compact LV frame suitable for medium‑size vessels
Class H vacuum‑pressure‑impregnated insulation gives excellent thermal endurance and moisture resistance
Dual axial fans with optional water cooling allow operation from –20 °C to +45 °C
Integrated UNITROL/GEN AVR series provides precise voltage regulation and built‑in under/over‑excitation protection
Compliance with IEC 60034‑18‑32 and IEEE Std 117‑1974 ensures long service life in harsh marine environments

Weaknesses

IP44 rating only protects against splashing water; not suitable for fully exposed wet locations without additional shielding
Physical size and weight require a dedicated generator room and heavy‑duty foundations
Maintenance of VPI insulated windings demands specialized testing (megger, partial discharge) and skilled personnel
Fixed 690 V output may need step‑up transformers for ships standardising on higher bus voltages
Bearing lubrication options (sealed‑for‑life or greasable) add complexity to long‑term maintenance planning

Typical Vessels: Cruise shipRo‑Ro ferryOffshore supply vesselLNG carrier (auxiliary)Naval auxiliaryContainer ship (hotel power)

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a reliable 560 kVA auxiliary generator with high‑temperature Class H insulation, flexible cooling and ABB’s integrated AVR system for vessels that already use ABB electrical equipment. Avoid if space is extremely limited, the installation requires higher than 690 V bus voltage without step‑up gear, or you prefer a lower‑maintenance sealed unit with a higher IP rating.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, emergency power and propulsion support on medium‑size passenger vessels and offshore platforms; also used in dual‑generator configurations for redundancy on container ships and LNG carriers.

Manufacturer Datasheet

Datasheet

AMG 0560-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High temperature Class H VPI insulated windings suitable for harsh marine climates
IP55 enclosure provides robust protection against dust and water spray
Dual axial‑fan cooling allows flexible air or water cooling options
Integrated ABB UNITROL/GEN AVR families give precise voltage regulation and overload protection
Modular frame (400–450) simplifies installation and future upgrades

Weaknesses

Large physical footprint compared with compact diesel‑engine driven alternators of similar rating
Moisture sensitivity of the insulation requires diligent humidity control and regular IR testing
Water‑cooled variant adds complexity and maintenance for coolant circuits
Higher upfront capital cost than lower‑rated or simpler generator sets
Requires skilled personnel for VPI winding inspection and AVR troubleshooting

Typical Vessels: Cruise shipContainer vesselBulk carrierLNG/ LPG carrierOffshore support vesselNaval auxiliary ship

Certifications: IMO D-2IEC 60034-18-32

Decision Guide: Choose this generator when you need a 560 kVA LV unit with proven IP55 protection, Class H insulation for high ambient temperatures, and integrated ABB AVR control – ideal for large passenger or cargo vessels requiring robust hotel‑load power. Avoid if vessel space is severely limited, the budget cannot accommodate the higher purchase price, or the operational profile favors a lower‑rated, more compact generator set.

Use Cases: Commonly installed as an auxiliary main‑generator on cruise ships and container carriers to supply hotel services, emergency power, and load‑sharing with propulsion generators; also used on offshore platforms and naval auxiliaries where reliable, high‑temperature tolerant power is critical.

Manufacturer Datasheet

Datasheet

AMG 0560-690V-60Hz-IP23

· low‑voltage synchronous marine generator

Power (kVA)

560

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density in the 560 kVA class with compact frame (400–450 series)
VPI (vacuum pressure impregnation) H‑class insulation offers excellent moisture resistance and long life
Sealed‑for‑life bearing option reduces maintenance intervals
Dual cooling capability – axial fans for air cooling or optional water‑cooling for hot climates
Integrated ABB UNITROL AVR series provides precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; not suitable for harshly dusty or spray‑prone installations without additional shielding
Limited to low‑voltage (≤690 V) output – higher system voltages require step‑up transformers
Physical size and weight are typical for 560 kVA generators, which may be a constraint on space‑limited vessels
Requires regular insulation resistance testing in marine humidity environments
Air‑cooling fans need periodic cleaning to prevent salt‑crystal buildup

Typical Vessels: Container shipsBulk carriersCruise linersOffshore supply vesselsRo‑Ro ferriesNaval auxiliaries

Certifications: DNV GL Type Approval for Marine GeneratorsABS Marine Generator ClassificationIEC 60034‑18‑32 (insulation ageing) compliance

Decision Guide: Choose if you need a proven 560 kVA auxiliary generator with robust H‑class insulation, flexible cooling options and ABB after‑sales support for medium‑size merchant vessels. Avoid if the installation requires higher output voltage (>1 kV), an IP55/68 enclosure, or extremely tight space constraints where a smaller footprint is mandatory.

Use Cases: Typically installed as main auxiliary power source on large commercial ships to supply hotel loads, cargo handling equipment and emergency systems; also used in dynamic positioning setups where stable voltage regulation under variable load is critical.

Manufacturer Datasheet

Datasheet

AMG 0560-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (560 kVA) in a compact LV frame with IP44 protection.
Class H VPI vacuum pressure impregnation insulation provides excellent moisture resistance and long life.
Dual cooling options (air‑flow or water‑cooled) allow flexible installation on vessels with limited ventilation.
Integrated ABB UNITROL/GEN AVR families give precise voltage regulation and built‑in under/over‑excitation limits.
Sealed‑for‑life bearing option reduces routine maintenance intervals.

Weaknesses

IP44 rating does not protect against high‑pressure water jets; additional shielding may be required in spray zones.
Output voltage limited to 690 V, so ships needing higher bus voltages must use step‑up transformers.
Initial capital cost is higher than comparable diesel gensets of similar kVA.
Large physical footprint and weight compared with some compact generator sets; requires dedicated space and ventilation.
Maintenance of VPI insulation and AVR units demands specialized ABB service support.

Typical Vessels: TankersContainer shipsBulk carriersOffshore supply vesselsCruise shipsLNG carriers (auxiliary power)

Certifications: IEC 60034-18-32IEEE Std 117‑1974DNV GL approvalABS classification

Decision Guide: Choose if you need a high‑reliability, 560 kVA synchronous generator with robust Class H insulation, flexible cooling and integrated ABB AVR for medium‑size to large commercial vessels. Avoid if the installation space is extremely constrained, the vessel operates on a higher bus voltage without transformers, or budget constraints favor lower‑cost diesel gensets.

Use Cases: Typically installed as main auxiliary power generators on tankers, container ships and offshore supply vessels, providing both normal operation and emergency power. Also used in shore‑power conversion plants where stable voltage and harmonic performance are critical.

Manufacturer Datasheet

Datasheet

AMG 0560-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

560

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (560 kVA) in a compact LV frame suitable for medium‑size vessels
IP55 protection and vacuum pressure impregnated (VPI) Class H insulation resist moisture, salt and high temperature
Dual axial fans provide flexible air‑cooling; water‑cooling option available for hot climates
Integrated UNITROL or GEN AVR series offers precise voltage regulation and overload protection
Designed to meet IEC 60034‑18‑32 and IEEE Std 117‑1974 standards, facilitating classification society approval

Weaknesses

Physical footprint larger than comparable diesel generators of the same rating, impacting space‑constrained installations
Requires diligent moisture and insulation monitoring (IR tests, PD analysis) in marine service
Bearing lubrication is sealed‑for‑life only on lower frames; higher frames need periodic greasing
Limited to low‑voltage output (380‑690 V); vessels preferring high‑voltage distribution may need additional step‑up gear
Initial capital cost higher than standard marine diesel generators

Typical Vessels: Container ship (mid‑size)Product tankerBulk carrierCruise ship auxiliary powerOffshore supply vesselLNG/LPG carrier hotel load

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose this generator when you need a reliable 560 kVA LV source with robust IP55 protection, high‑temperature Class H insulation, and ABB's proven AVR options for vessels operating in corrosive, high‑humidity environments. Avoid if vessel space is extremely limited, the power system is designed around higher voltage distribution, or budget constraints outweigh the benefits of the advanced insulation and cooling features.

Use Cases: Typically installed as auxiliary or emergency power on medium‑size merchant ships to supply hotel loads, cargo handling equipment, dynamic positioning systems, and shore‑side power conversion. Also used in offshore platforms where redundant, low‑voltage generation with high environmental resilience is required.

Manufacturer Datasheet

Datasheet

AMG 0630-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (630 kVA) in a compact LV frame suitable for large merchant vessels
Robust VPI (vacuum pressure impregnation) Class H insulation provides excellent moisture resistance and long life
Dual‑axial fan design allows optional water cooling, extending operation to hot climates and high altitudes
Integrated ABB UNITROL AVR (1000 series) delivers precise voltage regulation and built‑in under/over‑excitation protection
Proven compliance with IEC 60034‑18‑32 and IEEE Std 117‑1974 standards for marine generators

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and water spray; additional sealing may be required in harsh salt‑spray areas
After‑fettable bearings (frame 630) need periodic lubrication checks, increasing maintenance compared with sealed‑for‑life designs
Physical footprint and weight are significant for a 630 kVA unit, limiting installation on space‑constrained vessels
Moisture ingress can degrade insulation; rigorous IR and partial discharge testing is mandatory
Initial capital cost is higher than generic non‑ABB generators of similar rating

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore support vesselLNG carrier

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a reliable 630 kVA auxiliary power source with proven ABB engineering, flexible cooling options and integrated AVR for vessels operating in temperatures –20 °C to +45 °C and up to 1 000 m altitude. Avoid if space is at a premium, you require fully sealed (IP66) equipment, or prefer a maintenance‑free bearing solution.

Use Cases: Main auxiliary generator on large merchant ships, emergency power backup for cruise vessels, shore‑power generation on offshore platforms, and any application where high reliability and precise voltage control are critical under marine environmental stresses.

Manufacturer Datasheet

Datasheet

AMG 0630-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (630 kVA) in a compact LV frame (400–630) suitable for many ship classes
Class H VPI‑impregnated stator and rotor insulation gives excellent thermal and moisture resistance
Integrated UNITROL AVR series provides automatic voltage regulation with UEL/OEL limiters
Dual axial fans allow flexible air or water cooling to match operating climate
Standardised mounting and wiring simplifies installation and spare‑part logistics

Weaknesses

IP44 rating protects against splashing water only; not suitable for areas exposed to heavy spray without additional shielding
Cooling system (fans, optional water circuit) requires regular cleaning in salty environments
Insulation testing is mandatory at short intervals because moisture ingress can degrade performance
Physical footprint may be large for small vessels or retro‑fit projects
Initial acquisition cost is higher than comparable low‑power diesel generators

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vesselFerry

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose this generator when a ship needs a robust 630 kVA auxiliary power source with high‑temperature insulation, integrated AVR and flexible cooling for medium‑size vessels. Avoid it if space is at a premium, the installation area is subject to heavy spray (IP66 required), or budget constraints favour lower‑rated units.

Use Cases: Commonly installed as main auxiliary generators on container ships, tankers and cruise vessels, providing power for hotel services, cargo handling equipment and emergency systems. Also used on offshore support vessels where reliable, high‑output electricity is critical and the dual‑fan cooling can be matched to ambient sea‑water conditions.

Manufacturer Datasheet

Datasheet

AMG 0630-400V-50Hz-IP55

· synchronous marine generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 protection suitable for salt‑water exposure
Class H insulation allows operation up to +180 °C ambient temperature
Integrated ABB UNITROL AVR options provide precise voltage regulation and overload protection
Modular frame (630) enables flexible installation on large vessels
VPI vacuum pressure impregnated windings give high dielectric strength and moisture resistance

Weaknesses

Large physical footprint and weight typical of a Frame 630 unit, requiring ample machinery space
Requires diligent moisture‑control and regular insulation testing in marine service
Complex cooling options (dual axial fans or water‑air) increase installation and maintenance effort
Higher initial capital cost compared with lower‑rated generators
Maintenance demands skilled personnel for bearing lubrication and AVR servicing

Typical Vessels: Container shipCruise linerOil tankerLNG carrierOffshore support vesselBulk carrier (large tonnage)

Decision Guide: Choose if you need a high‑power (≈630 kVA) generator with proven IP55 durability, Class H insulation and integrated ABB AVR for large vessels that can accommodate a Frame 630 package. Avoid if space is limited, power demand is below 500 kVA, or you prefer a more compact, lower‑cost solution.

Use Cases: Main auxiliary power generation for hotel loads on cruise ships, emergency standby power on tankers and bulk carriers, primary generator sets on large container vessels, and dedicated power supply for offshore platforms where reliable, high‑temperature operation is critical.

Manufacturer Datasheet

Datasheet

AMG 0630-400V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (630 kVA) in a compact LV frame suitable for medium‑size vessels
Robust VPI (vacuum pressure impregnation) insulation class H offering excellent moisture resistance and thermal endurance
Integrated ABB UNITROL or GEN AVR options provide precise voltage regulation and built‑in under/over‑excitation protection
Dual cooling capability (axial fans with optional water‑cooling) adapts to varied ship layouts and ambient conditions
Sealed‑for‑life bearing option available for frames ≤400, reducing maintenance on smaller units

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; not fully dust‑tight or splash‑proof in harsh spray zones
Requires regular insulation resistance and partial discharge testing due to marine humidity exposure
Physical footprint and weight are significant for a 630 kVA unit, demanding dedicated generator room space
Cooling performance depends on unobstructed airflow; fouling of axial fans can lead to overheating if not maintained
Standard output is 400 V LV; vessels needing higher voltage must install step‑up transformers

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliaryRo‑Ro ferry

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a reliable, high‑output LV synchronous generator with flexible cooling and integrated AVR for medium‑size commercial or offshore vessels. Avoid if space is extremely limited, the installation area is exposed to heavy spray requiring higher ingress protection, or the vessel prefers direct high‑voltage generation without step‑up transformers.

Use Cases: Typically installed as a main service generator on container ships, cruise liners and offshore supply vessels to supply hotel loads, auxiliary propulsion systems, and emergency power (in conjunction with an additional smaller emergency set). The unit is paired with a diesel prime mover and controlled via the ship's power management system, providing stable voltage for sensitive equipment and compliance with SOLAS requirements.

Manufacturer Datasheet

Datasheet

AMG 0630-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (630 kVA) in a compact LV frame 630 package
VPI (vacuum pressure impregnation) H‑class insulation provides excellent moisture resistance and long life
Dual cooling options – axial fans with optional water‑cooling – allow operation from -20 °C to +45 °C
Integrated UNITROL/GEN AVR series offers precise voltage regulation and under/over‑excitation protection
IP44 enclosure meets deck‑mounted requirements for splash and dust protection

Weaknesses

IP44 rating does not protect against full immersion; additional shielding needed in very wet locations
Frame 630 bearings are greasable, requiring periodic lubrication checks unlike sealed‑for‑life designs
Fixed 400 V output may require step‑up transformers for vessels that standardise on higher bus voltages
Physical size and weight limit installation on small craft or confined engine rooms
Cooling performance depends on clean air paths; fouling of axial fans can quickly reduce thermal margin

Typical Vessels: Container feederProduct tankerBulk carrier (mid‑size)Offshore supply vesselCruise ship auxiliary plant

Certifications: DNV GL classificationABS approvalLloyd's Register classIEC 60034‑18‑32 insulation ageing standard

Decision Guide: Choose if you need a reliable 630 kVA LV auxiliary generator with robust VPI insulation, dual cooling flexibility and proven AVR options for medium‑size merchant vessels. Avoid if the installation area is prone to full water immersion, if sealed‑for‑life bearings are mandatory, or if higher bus voltages (>690 V) are required without additional transformers.

Use Cases: Commonly installed as a main auxiliary generator on mid‑size cargo ships and offshore support vessels, providing continuous power for hotel loads, cargo handling equipment, and emergency systems. Also used in shore‑power configurations where a stable 400 V supply is required.

Manufacturer Datasheet

Datasheet

AMG 0630-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure provides excellent protection against salt spray and dust.
Class H vacuum‑pressure‑impregnated (VPI) insulation gives high thermal endurance and moisture resistance.
Integrated ABB UNITROL or GEN AVR options enable precise voltage regulation and built‑in under/over‑excitation limits.
Dual axial fan cooling allows flexible air‑or water‑cooled operation for a wide ambient temperature range (-20 °C to +45 °C).
Sealed‑for‑life bearings (frame <400) reduce maintenance intervals and improve reliability.

Weaknesses

Physical size and weight of the frame‑630 unit may be restrictive on vessels with limited engine‑room space.
Limited to low‑voltage (LV) range; not suitable for ships requiring >5 MVA or high‑voltage generators.
Moisture ingress can still affect insulation over time, requiring regular IR and PD testing.
Cooling performance depends on clean airflow; fouled fans or blocked ducts reduce efficiency.
Higher initial capital cost compared with basic open‑type marine alternators.

Typical Vessels: TankerContainer shipBulk carrierCruise liner (auxiliary power)Offshore supply vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL classification approvalABS class approvalLloyd's Register approval

Decision Guide: Choose if you need a robust 630 kVA auxiliary generator with high environmental protection, Class H insulation and integrated ABB AVR for vessels operating in harsh salt‑water conditions. Avoid if space is at a premium, power demand exceeds the LV range, or a lower‑cost open‑type alternator will meet the operational profile.

Use Cases: Commonly installed as an auxiliary generator on large merchant ships to supply hotel loads, emergency power and start‑up of main propulsion systems. Also used on offshore support vessels where reliable, low‑maintenance power is critical and the IP55 enclosure protects against spray zones.

Manufacturer Datasheet

Datasheet

AMG 0630-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (630 kVA) in a compact LV frame (400–630) suitable for medium‑size ships
VPI (vacuum pressure impregnation) insulation class H/F provides excellent moisture resistance and thermal endurance
Dual axial fans allow flexible air or water cooling, maintaining temperature up to +45 °C ambient
Sealed‑for‑life bearing option (frame <400) reduces maintenance intervals
Compatible with ABB UNITROL 1000 series AVR for precise voltage regulation and protection

Weaknesses

IP23 rating only protects against splashing water; not suitable for fully dust‑tight or sub‑sea installations
Standard frequency is 50 Hz – operation at 60 Hz requires a converter or dedicated variant
Large physical footprint and weight typical of frame 630 units may limit installation space on smaller vessels
Requires regular insulation resistance testing (Megger) due to marine humidity exposure
Cooling performance depends on clean fan blades; salt‑spray fouling can reduce efficiency

Typical Vessels: Container shipCrude oil tankerBulk carrierRo‑Ro / ferryOffshore supply vesselCruise liner (auxiliary power)

Certifications: DNV GL Marine ClassificationABS Marine ClassificationIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 630 kVA auxiliary generator with robust VPI insulation, dual‑fan cooling and proven ABB AVR integration for medium‑size merchant vessels. Avoid if the installation requires a higher IP rating (e.g., IP55), operation at 60 Hz without conversion, or very limited space/weight allowances.

Use Cases: Typically installed as an auxiliary generator driven by the main engine or a dedicated diesel prime mover on large cargo ships and tankers to supply shipboard electricity, hotel loads, and emergency power. Also used in retrofit projects where a proven ABB synchronous unit is required for compliance with class society standards.

Manufacturer Datasheet

Datasheet

AMG 0630-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (630 kVA) in a compact frame suitable for large merchant vessels
Robust VPI insulation class H offering excellent thermal endurance in harsh marine environments
Integrated UNITROL AVR provides automatic voltage regulation, under/over‑excitation protection and easy tuning
Dual cooling options (air‑only or air‑water) allow flexibility for different installation spaces and ambient conditions
ABB global support network and proven service history for the AMG series

Weaknesses

IP44 rating limits protection against water ingress; not suitable for locations exposed to direct spray or immersion
Frame 630 bearings are greasable, requiring periodic lubrication checks unlike sealed‑for‑life designs
Fixed 50 Hz frequency may require conversion equipment on vessels operating on 60 Hz grids
Physical size and weight can be a constraint in space‑limited engine rooms
Moisture sensitivity of the VPI insulation demands strict humidity control during storage and maintenance

Typical Vessels: Container ship (≥8,000 TEU)Bulk carrier (>30 kt)Crude oil tankerLNG/LPG carrierOffshore supply vesselCruise liner

Decision Guide: Choose this generator when you need a reliable 630 kVA marine power source with integrated AVR, proven ABB service support and the flexibility of air or water cooling. Avoid it if your installation area requires higher ingress protection (IP65+), operates on 60 Hz, or has severe space/weight constraints that favour smaller modular units.

Use Cases: Typically installed as a main auxiliary generator on large merchant vessels to supply shipboard electrical loads and emergency power, or as part of a redundant power plant on offshore platforms where high reliability and robust cooling are essential.

Manufacturer Datasheet

Datasheet

AMG 0630-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (630 kVA) in a compact frame suitable for large vessels
IP55 sealed enclosure protects against salt spray and harsh marine environments
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Dual cooling options (double‑axial fans with optional water‑cooling) allow operation in hot climates
Integrated UNITROL 1000/GEN AVR series with UEL/OEL limiters for stable voltage regulation

Weaknesses

Large physical footprint requires dedicated generator room and structural support
Double‑axial fan arrangement can generate higher acoustic noise levels
Water‑cooling variant adds complexity (pumps, hoses) and potential leak points
Requires regular insulation resistance and partial‑discharge testing in marine humidity
Designed for 50 Hz only; not directly suitable for vessels standardized on 60 Hz

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vesselNaval auxiliary ship

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV class approvalABS classification

Decision Guide: Choose if you need a robust 630 kVA auxiliary generator with strong environmental protection, flexible cooling and integrated AVR for large commercial or offshore vessels operating at 50 Hz. Avoid if space is limited, the vessel runs on 60 Hz, or lower power/price solutions are preferred.

Use Cases: Typically installed as a main auxiliary generator on large container ships and tankers to supply propulsion‑related hotel loads, as emergency power on cruise vessels, and as high‑capacity hotel generators on offshore support ships where reliable voltage regulation and corrosion resistance are critical.

Manufacturer Datasheet

Datasheet

AMG 0630-440V-60Hz-IP23

· synchronous marine generator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) tolerates elevated operating temperatures.
ABB’s VPI (vacuum pressure impregnation) stator/rotor provides excellent moisture resistance for marine environments.
Integrated UNITROL or GEN AVR options give precise voltage regulation and built‑in under/over‑excitation protection.
Broad service network and proven track record in commercial fleets.
Modular LV frame (400‑630) allows straightforward installation and future up‑rating.

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh spray zones without additional shielding.
Physical footprint is larger than compact diesel‑generator sets of similar rating.
Bearings may require periodic greasing (non‑sealed frames) increasing maintenance workload.
Requires separate cooling system design (air or water), adding to installation complexity.
Limited to 60 Hz operation; not directly compatible with 50 Hz vessels without derating.

Typical Vessels: Container shipTankerBulk carrierOffshore supply vesselCruise liner

Certifications: DNV GLABSLloyd's RegisterIEC 60034‑18‑32 (insulation ageing)IMO Type Approval for shipboard power generation

Decision Guide: Choose if you need a reliable 630 kVA auxiliary generator on a 60 Hz vessel, value ABB’s global support and high‑temperature insulation, and can accommodate an IP23 enclosure with proper splash protection. Avoid if the installation space is extremely constrained, a higher ingress protection rating (e.g., IP55) is mandatory, or the vessel operates on 50 Hz power systems.

Use Cases: Typically installed as part of the auxiliary power plant on US‑flagged container ships and tankers for hotel load and emergency generation, on offshore supply vessels to support dynamic positioning equipment, and on cruise ships where high‑temperature tolerance is required for continuous hotel services.

Manufacturer Datasheet

Datasheet

AMG 0630-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (630 kVA) in a compact LV frame (400‑630 series)
Robust IP44 enclosure suitable for splash‑proof marine environments
Class H insulation allows operation up to +45 °C ambient temperature
Dual cooling options (air‑only or air/water) give flexibility for installation constraints
Integrated ABB UNITROL/GEN AVR families provide precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

IP44 only protects against splashing water; not suitable where full immersion protection (e.g., IP66) is required
440 V output may need step‑up transformation for vessels standardising on higher bus voltages
Large physical footprint and weight typical of LV frame 630 generators can limit installation in space‑constrained hulls
Requires regular insulation resistance testing and bearing monitoring due to marine humidity and vibration exposure
Maintenance of dual‑fan cooling system adds periodic cleaning workload

Typical Vessels: Medium‑size tankers (30–50 k DWT)Container ships up to 5,000 TEUCruise ships (hotel load auxiliary power)Offshore supply vessels / Platform support vesselsLNG carriers with dual‑fuel propulsion

Certifications: IEC 60034-18-32 (insulation ageing test compliance)DNV GL Type Approval

Decision Guide: Choose if you need a proven 630 kVA LV generator with flexible cooling, high‑temperature insulation and ABB AVR integration for medium‑to‑large commercial vessels. Avoid if the installation demands full immersion protection (IP66), higher bus voltage without transformers, or ultra‑compact power units.

Use Cases: Typically installed as the main auxiliary generator on tankers, container ships and cruise liners to supply hotel loads, emergency power and dynamic positioning support; also used on offshore supply vessels where dual cooling and robust environmental protection are required.

Manufacturer Datasheet

Datasheet

AMG 0630-440V-60Hz-IP55

· synchronous marine generator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (630 kVA) in a compact frame (630) suitable for LV marine applications
Robust IP55 sealed enclosure protects against salt spray and harsh weather
Class‑H VPI insulation provides long life and resistance to moisture and thermal ageing
Dual axial‑fan cooling allows air or water cooling, extending operation range from –20 °C to +45 °C
ABB global service network and ABB Ability condition‑monitoring integration for predictive maintenance

Weaknesses

Relatively large footprint and weight compared with smaller modular generators; may limit installation on space‑constrained vessels
Requires skilled personnel for VPI insulation inspection and AVR (UNITROL) servicing
Designed for 60 Hz operation only – not ideal for regions or ships standardising on 50 Hz
Initial capital cost higher than basic diesel alternators of similar rating
Cooling performance depends on clean fan blades; salt‑laden environments demand frequent cleaning

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: DNV GL Marine ClassificationABS (American Bureau of Shipping)IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if: you need a high‑output, weather‑proof auxiliary generator for large commercial vessels operating in harsh marine environments and you value ABB’s service support and condition monitoring. Avoid if: vessel space or weight limits are critical, the project budget is tight, or the ship requires a 50 Hz system.

Use Cases: Typically installed as main auxiliary power on large tankers, container ships and cruise vessels to supply hotel loads, cargo handling equipment and emergency systems; also used on offshore support ships where robust cooling and corrosion resistance are essential.

Manufacturer Datasheet

Datasheet

AMG 0630-690V-50Hz-IP23

· Four‑pole synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (630 kVA) in a compact 690 V package suitable for medium‑voltage shipboard distribution
H‑class insulation and VPI vacuum‑pressure impregnation provide good thermal endurance and resistance to moisture
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation limits
Dual axial fan cooling with optional water‑cooling gives flexibility for varied ambient conditions
ABB global service network and proven condition‑monitoring tools (LEAP, Ability) simplify maintenance

Weaknesses

IP23 enclosure protects only against solid objects >12.5 mm; additional sealing may be required in harsh salt‑spray areas
Large physical footprint and weight compared with lower‑power modular units can limit installation on smaller vessels
H‑class insulation is sensitive to prolonged moisture ingress – requires regular IR and PD testing
Four‑pole design limits speed range; not optimal for high‑speed diesel sets that prefer 2‑pole generators
AVR complexity adds extra spares inventory and diagnostic effort

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>10,000 TEU)Cruise linersOffshore supply vesselsLNG carriers with medium‑voltage distribution

Decision Guide: Choose if you need a robust 630 kVA auxiliary generator with ABB’s integrated AVR, have space for an IP23‑rated unit and can implement regular insulation monitoring. Avoid on vessels where only IP55/56 protection is acceptable, where weight or envelope constraints dominate, or when a lower‑voltage, higher‑speed generator better matches the main engine speed.

Use Cases: Typically installed as a main auxiliary power source for ship service loads (hotel, cargo handling, thrusters) on large ocean‑going vessels; also used as an emergency generator to meet SOLAS requirements where high reliability and rapid voltage regulation are critical.

Manufacturer Datasheet

Datasheet

AMG 0630-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust Class H insulation with VPI vacuum pressure impregnation for long life in humid marine environments
Dual axial fans and optional water‑cooling provide flexible cooling for a wide ambient temperature range (-20 °C to +45 °C)
Compact LV frame (630) integrates well into standard engine rooms without requiring high‑voltage step‑up equipment
ABB’s UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation protection
Proven compliance with IEC 60034‑18‑32 and IEEE Std 117‑1974 standards

Weaknesses

IP44 rating protects against splashing only; additional sealing may be required in heavily sprayed areas
Relatively large footprint compared with newer modular or high‑speed generator sets
Bearing maintenance (regreasing) is needed for frames above 450, increasing service intervals
Fixed 690 V output may require transformers to match higher shipboard voltage levels
Initial capital cost can be higher than comparable low‑cost Chinese or Indian alternatives

Typical Vessels: Medium‑size tankers (up to 30,000 dwt)Container ships (5–10 k TEU)General cargo vesselsCruise ships and ferriesOffshore supply & support vessels

Decision Guide: Choose this generator when you need a proven, high‑temperature tolerant 630 kVA unit with flexible cooling options and ABB’s global service network. Avoid it if space, weight or the need for higher than 690 V direct output are primary constraints, or when a lower upfront cost is decisive.

Use Cases: Typically installed as the main auxiliary power source in medium‑sized merchant ships, providing hotel load, cargo handling equipment power and emergency generation. It is also used on cruise vessels for steady hotel‑load supply and on offshore support ships where robust operation under harsh sea‑water exposure is required.

Manufacturer Datasheet

Datasheet

AMG 0630-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 rated housing provides excellent protection against dust and water spray in harsh marine environments.
Class H vacuum pressure impregnated (VPI) stator and rotor insulation gives long service life and high thermal endurance.
Dual cooling options – double axial fans with optional water‑cooling – allow operation from -20 °C to +45 °C and at altitudes up to 1000 m.
Integrated UNITROL 1000 series AVR offers built‑in under/over‑excitation limiters and precise voltage regulation.
Modular frame sizes (400–630) simplify installation on a wide range of vessel layouts.

Weaknesses

Physical footprint and weight are significant for LV generators, requiring dedicated machinery space.
Sealed‑for‑life bearings (frames <400) cannot be re‑greased; maintenance must rely on replacement rather than refurbishment.
Air‑cooling fans can generate high noise levels, potentially needing additional acoustic treatment.
Moisture ingress remains a critical failure point; regular insulation resistance testing is mandatory.
Initial capital cost is higher than smaller diesel‑alternator sets of comparable power.

Typical Vessels: Container shipCruise linerBulk carrierLNG/LPG carrierOffshore support vesselNaval auxiliary

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL class approval

Decision Guide: Choose this generator when a ship requires robust, high‑power auxiliary electricity (≈500–1000 kVA), needs IP55 protection, and benefits from integrated AVR with over/under‑excitation limits. Avoid it if space is at a premium, the vessel prefers a smaller or variable‑speed genset, or maintenance policies rely on re‑greasable bearings.

Use Cases: Commonly installed as the main auxiliary generator on large commercial vessels to supply hotel loads and emergency power; also used on offshore platforms for shore‑power generation and on cruise ships where high reliability and strict environmental protection are mandatory.

Manufacturer Datasheet

Datasheet

AMG 0630-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (630 kVA) in a compact LV frame suitable for 600‑800 V shipboard systems
Robust VPI (vacuum pressure impregnation) insulation class H provides excellent thermal and moisture resistance
Integrated UNITROL AVR series offers precise voltage regulation with UEL/OEL protection
Dual cooling options (axial fans and optional water‑cooling) allow operation from –20 °C to +45 °C up to 1000 m altitude
ABB global service network and proven track record on commercial vessels

Weaknesses

IP23 rating only protects against splash; not suitable for harsh wash‑down or fully watertight compartments
Frame 630 bearings are after‑greasable, requiring periodic lubrication checks
Physical footprint and weight are significant compared with lower‑power units, limiting installation in space‑constrained areas
Maintenance of VPI insulation demands strict moisture control and regular IR testing
Higher initial cost relative to generic non‑ABB generators

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D-2 (IEC 60092)DNV GL ClassificationABS Classification

Decision Guide: Choose if the vessel requires a reliable 600‑800 V auxiliary power source in the 500‑1000 kVA range, values integrated ABB AVR control and global support, and operates in environments up to –20 °C/+45 °C. Avoid if a fully sealed IP55/65 enclosure is mandatory, space or weight constraints are critical, or higher voltage (>11 kV) generation is needed.

Use Cases: Typically installed as the main auxiliary generator on large commercial ships to supply hotel loads and emergency power, or as a dedicated emergency generator for critical navigation and safety systems on cruise vessels and offshore support ships.

Manufacturer Datasheet

Datasheet

AMG 0630-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class H with vacuum pressure impregnated windings for superior thermal endurance
Dual cooling options (axial fans or water‑cooled) allow operation in a wide ambient temperature range (-20 °C to +45 °C)
Integrated UNITROL AVR series provides automatic voltage regulation with under/over‑excitation limiters
Sealed‑for‑life bearings on frames <400 reduce maintenance intervals
ABB global service network and proven condition monitoring (LEAP) tools

Weaknesses

IP44 rating protects against splashing water only; not suitable for dusty or heavily contaminated compartments
Physical footprint and weight are significant for a 630 kVA unit, requiring dedicated machinery space
Moisture ingress can degrade insulation; regular IR and partial‑discharge testing is mandatory
AVR units (UNITROL) are sensitive to corrosion in harsh salt environments and may need frequent inspection
Maximum output limited to 690 V; ships requiring higher bus voltages must add step‑up transformers

Typical Vessels: Medium‑size tankers (LR2, product carriers)Container vessels up to 5,000 TEUBulk carriers (handy‑size to panamax)Offshore supply vessels and platform support shipsCruise ferries and small passenger ships

Certifications: IEC 60034-18-32 (insulation ageing test)IEEE Std 117‑1974 (generator construction)Classified by major societies (DNV GL, ABS, LR) for marine auxiliary power – >90 % confidence based on ABB product line approvals

Decision Guide: Choose if you need a robust 600–700 kVA auxiliary generator with high‑temperature insulation, dual cooling flexibility and full ABB after‑sales support. Avoid if the vessel requires higher voltage or power output, dust‑tight protection (IP55+), or has severe weight/space constraints.

Use Cases: Provides hotel load and propulsion auxiliaries on medium‑size tankers and container ships; powers cargo handling gear on bulk carriers; supplies electricity to accommodation areas on cruise ferries; serves as standby power for offshore platform support vessels where reliability and rapid service are critical.

Manufacturer Datasheet

Datasheet

AMG 0630-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (630 kVA) in a compact LV frame (400‑630) suitable for auxiliary power plants.
Robust IP55 enclosure and Class H VPI insulated windings resist harsh salt‑water environments and high operating temperatures.
Dual cooling options (axial fans or water‑cooled) provide flexibility for different installation layouts.
Integrated UNITROL AVR series delivers precise voltage regulation with under/over‑excitation protection.
Sealed‑for‑life bearings on frames <400 reduce routine lubrication maintenance.

Weaknesses

Large physical footprint and weight compared with newer high‑speed generator designs, limiting installation in space‑constrained vessels.
Requires regular insulation resistance and partial‑discharge testing to guard against moisture ingress common in marine service.
Operating voltage limited to 690 V; higher‑voltage shipboard distribution systems need step‑up transformers.
AVR tuning and firmware updates may be required for optimal performance, adding complexity to commissioning.

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierOffshore supply vesselCruise liner

Decision Guide: Choose if: you need a proven 630 kVA LV generator with IP55 protection, Class H insulation and flexible cooling for large commercial or offshore vessels operating in harsh marine climates. Avoid if: the vessel uses high‑voltage (≥11 kV) bus systems, has severe space/weight constraints, or prefers a newer compact high‑speed generator architecture.

Use Cases: The AMG 0630‑690V is typically installed as part of an auxiliary power plant on large merchant ships to supply shipboard electricity, support emergency power requirements, and provide shore‑power capability when docked. It is also used in offshore platforms where reliable, high‑temperature tolerant generation is critical.

Manufacturer Datasheet

Datasheet

AMG 0710-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (710 kVA) in a standard 400 V LV platform
Vacuum pressure impregnated (VPI) H‑class insulation provides excellent thermal and moisture resistance
Dual axial fans allow flexible air or water cooling for varied installation conditions
Compliant with IEC 60034‑18‑32 and IEEE Std 117, facilitating classification society approvals
Modular design with interchangeable AVR units (UNITROL 1000 series) simplifies integration

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh spray zones without additional shielding
Bearing lubrication may be required on frames >400, increasing maintenance workload
Physical footprint is relatively large compared with compact low‑power generators
Sensitive to moisture in the stator winding – regular insulation resistance testing mandatory
Requires skilled personnel for AVR tuning and VPI condition monitoring

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vesselsLNG carriers

Decision Guide: Choose if you need a proven 710 kVA LV generator with flexible cooling, robust VPI insulation and ABB after‑sales support for large merchant or offshore vessels. Avoid if the installation area demands higher ingress protection (e.g., IP55) or if you require a fully sealed‑for‑life bearing system to minimise maintenance.

Use Cases: Main auxiliary power generation on large cargo ships, hotel‑load generators on cruise vessels, emergency power units for offshore platforms, and any shipboard application where a reliable 400 V synchronous source is required.

Manufacturer Datasheet

Datasheet

AMG 0710-400V-50Hz-IP44

· synchronous marine generator

Power (kVA)

710

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal endurance thanks to Class H vacuum‑pressure‑impregnated (VPI) insulation
Sealed‑for‑life bearing option reduces routine maintenance
Double axial fans provide robust air cooling and optional water‑cooling for hot climates
IP44 enclosure offers protection against splashing seawater and dust in typical engine rooms
Standardised AVR options (UNITROL 1000, GEN06/GEN08) enable precise voltage regulation

Weaknesses

IP44 rating does not protect against heavy water ingress or full dust exposure; additional sealing may be required in harsh environments
Cooling performance depends on unobstructed airflow; fouling of fan blades can cause overheating
Frames <400 use sealed bearings that cannot be serviced, limiting refurbishment options
Fixed 50 Hz frequency may not suit vessels standardising on 60 Hz systems
Physical size and weight require dedicated generator room space and adequate ventilation

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vesselGeneral cargo ship

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974 (generator construction)

Decision Guide: Choose this generator when you need a proven 710 kVA unit with low‑maintenance sealed bearings, high‑temperature insulation and flexible cooling for 400 V shipboard systems. Avoid it if the installation demands higher ingress protection (IP65+), serviceable bearing refurbishment, or operation at 60 Hz.

Use Cases: Typically installed as an auxiliary power source for hotel loads, emergency generators, or dedicated propulsion‑support gensets on large merchant vessels and offshore platforms where reliable, low‑maintenance operation is critical.

Manufacturer Datasheet

Datasheet

AMG 0710-400V-50Hz-IP55

· synchronous marine generator

Power (kVA)

710

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 protection suitable for harsh salt‑water environments
Class H VPI‑impregnated windings give high thermal endurance and long life
Integrated UNITROL AVR provides automatic voltage regulation with under/over‑excitation limits
Dual cooling options (double axial fans, optional water‑cooling) allow flexible installation
Modular frame sizes (400–630 mm) fit a wide range of vessel engine rooms

Weaknesses

Relatively large footprint compared with compact diesel gensets of similar rating
Requires skilled maintenance for sealed‑for‑life bearings and insulation testing
Designed for 50 Hz operation; vessels operating on 60 Hz need frequency conversion or a different model
Initial capital cost higher than standard low‑speed diesel generators
Fans can accumulate salt deposits, increasing inspection and cleaning workload

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselRo‑Ro ferry

Decision Guide: Choose this generator when you need a robust, high‑temperature rated synchronous unit with IP55 protection and integrated AVR for large auxiliary power on 50 Hz vessels. Avoid it if the ship operates on 60 Hz, has severe space or weight constraints, or lacks access to qualified electrical maintenance personnel.

Use Cases: Main‑auxiliary power generation for hotel loads on cruise ships, cargo handling equipment on container and bulk carriers, emergency standby power on tankers, and support power for offshore supply vessels where reliability and environmental protection are critical.

Manufacturer Datasheet

Datasheet

AMG 0710-400V-60Hz-IP23

· synchronous marine generator

Power (kVA)

710

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (710 kVA) in a compact LV frame (400‑630) suitable for medium‑size vessels
Class‑H vacuum pressure impregnation (VPI) insulation provides excellent thermal and moisture resistance
Modular AVR options (UNITROL 1000 series or GEN06/GEN08) allow precise voltage regulation and protection limits
Flexible cooling – dual axial fans with optional water‑air hybrid – adapts to a wide ambient temperature range
Sealed‑for‑life bearing option for frames <400 reduces maintenance intervals

Weaknesses

IP23 enclosure offers limited dust protection; not suitable for harshly contaminated engine rooms without additional shielding
Fixed 400 V output may require step‑up transformers on vessels that standardise on higher bus voltages
Size and weight are comparable to other 700 kVA generators, limiting installation in very space‑constrained ships
Moisture ingress can degrade insulation; requires regular IR and partial‑discharge testing
Cooling performance depends on clean airflow; fan fouling in salty environments must be monitored

Typical Vessels: TankerContainer shipBulk carrierCruise ship (hotel load)Offshore supply vesselLNG carrier (auxiliary power)

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a reliable 710 kVA auxiliary generator with class‑H VPI insulation, modular AVR options and flexible air/water cooling for medium‑size vessels where an IP23 enclosure is acceptable. Avoid if the installation requires higher bus voltage than 400 V, fully dust‑tight (IP55+) protection, or extremely compact weight/space constraints.

Use Cases: Typically installed as a main auxiliary generator on tankers, container ships and bulk carriers to supply hotel loads, cargo handling equipment and emergency power. Also used on cruise ships for hotel services and on offshore supply vessels to support dynamic positioning and deck machinery.

Manufacturer Datasheet

Datasheet

AMG 0710-400V-60Hz-IP44

· synchronous marine generator

Power (kVA)

710

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (710 kVA) in a compact LV frame (400–630) suitable for many shipboard applications
Robust H‑class VPI insulation provides excellent moisture resistance and thermal ageing performance
Dual axial fan design allows flexible air or water cooling, extending operating temperature range (-20 °C to +45 °C)
Standard IP44 rating permits safe installation in deck environments with splash protection
Integrated UNITROL AVR options give precise voltage regulation and built‑in under/over‑excitation limiters

Weaknesses

IP44 only protects against splashing water; not adequate for fully exposed, high‑spray locations without additional shielding
Large physical footprint of frame 400–630 may be restrictive on vessels with limited generator room
Bearings require periodic inspection and greasing (unless sealed‑for‑life version is specified)
AVR units add complexity to commissioning and maintenance procedures
Initial acquisition cost is higher than comparable low‑cost diesel engine‑generator sets

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrier (mid‑size)Naval auxiliary / support ship

Decision Guide: Choose this generator if you need a high‑output, 710 kVA LV marine alternator with proven insulation durability and flexible cooling for vessels that can accommodate a frame 400–630 and have routine maintenance programmes. Avoid it when the installation area requires higher ingress protection (IP55+), space is severely limited, or you prefer a sealed‑for‑life bearing solution without regular greasing.

Use Cases: The AMG 0710-400V-60Hz-IP44 is typically installed as an auxiliary power source for hotel loads on cruise ships, as a main generator on container and bulk carriers, and as emergency power on offshore support vessels where reliable voltage regulation and robust insulation are critical in salty, humid environments.

Manufacturer Datasheet

Datasheet

AMG 0710-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure provides protection against salt spray and dust.
Class H insulation allows operation up to +180 °C, enhancing thermal reliability.
VPI (vacuum pressure impregnation) stator/rotor construction gives excellent moisture resistance and long life.
Dual axial‑fan cooling with optional water‑air hybrid keeps temperatures stable in a wide ambient range (-20 °C to +45 °C).
Integrated ABB UNITROL 1000 or GEN06/GEN08 AVR offers precise voltage regulation and built‑in under/over‑excitation limits.

Weaknesses

Physical size (frame 400) requires substantial engine room space and heavy foundations.
Maintenance of insulation resistance is critical; frequent megger testing is needed in marine humidity.
Air‑flow cooling can be degraded by salt deposits, requiring regular cleaning.
Bearings may need periodic greasing unless a sealed‑for‑life version is specified.
Fixed 400 V output may require step‑up transformers for higher shipboard bus voltages.

Typical Vessels: Offshore Supply VesselPlatform Supply VesselCruise ShipContainer ShipTanker (product/LNG)Naval Auxiliary

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a high‑power, temperature‑tolerant generator with proven ABB service support and robust protection against marine corrosion. Avoid if engine‑room space is limited, you prefer a lower voltage bus without additional transformers, or you require a fully sealed bearing system without periodic greasing.

Use Cases: Provides main auxiliary power on large commercial vessels, supplies emergency generation for critical systems, supports heavy hotel loads on cruise ships, and powers cargo handling equipment on offshore supply vessels where reliable, high‑temperature operation is essential.

Manufacturer Datasheet

Datasheet

AMG 0710-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (710 kVA) in a compact frame suitable for medium‑size vessels
Class H vacuum pressure impregnated (VPI) insulation provides excellent thermal endurance and moisture resistance
Integrated ABB UNITROL AVR system offers precise voltage regulation and built‑in under/over‑excitation protection
IP23 enclosure meets marine splash‑proof requirements while allowing easy access for maintenance
Proven track record with global classification societies and extensive after‑sales support

Weaknesses

IP23 rating does not protect against dust ingress; unsuitable for extremely harsh or dusty environments
Fixed 440 V output may require additional transformers on vessels standardized on higher bus voltages (e.g., 690 V)
Cooling relies on axial fans that can become fouled by salt deposits, demanding regular cleaning
Large physical footprint compared with newer high‑speed diesel generators of similar rating
Bearing lubrication is sealed‑for‑life only up to frame 400; higher frames need periodic greasing

Typical Vessels: TankerContainer shipBulk carrierRo‑Ro vesselOffshore supply vesselCruise liner (mid‑size)

Decision Guide: Choose this generator when you need a reliable 710 kVA synchronous source with robust Class H insulation, integrated AVR and proven ABB service support on vessels that operate at 440 V bus voltage. Avoid it if the installation requires dust‑tight (IP54+) protection, higher nominal voltages without step‑up transformers, or where space and weight constraints favour more compact high‑speed diesel generators.

Use Cases: The AMG 0710‑440V is typically installed as an auxiliary power source for main‑engine start‑up, hotel load supply, and emergency generation on medium to large commercial vessels. It is also used in retrofit projects where a proven synchronous generator with built‑in voltage regulation is required to meet classification society standards.

Manufacturer Datasheet

Datasheet

AMG 0710-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H vacuum pressure impregnated (VPI) stator/rotor insulation provides high dielectric strength and moisture resistance
Dual axial fans allow flexible air‑ or water‑cooling for a wide ambient temperature range (-20 °C to +45 °C)
Integrated UNITROL 1000 or GEN06/GEN08 AVR options give precise voltage regulation and built‑in under/over‑excitation protection
Sealed‑for‑life bearings (frames <400) reduce maintenance; greasable bearings available for larger frames
Meets IEC 60034‑18‑32 insulation ageing standard and IEEE 117‑1974, facilitating class approvals

Weaknesses

IP44 rating only protects against splashing water; not suitable for fully dust‑tight or sub‑sea installations
Low‑voltage output (440 V) may require step‑up transformers for vessels with high‑voltage distribution systems
Large physical footprint compared to compact diesel generators of similar power, limiting installation on small hulls
Moisture ingress remains a critical failure mode; requires regular IR and partial discharge testing
Cooling performance depends on unobstructed airflow; fouling of fan blades can lead to overheating

Typical Vessels: Container shipBulk carrierProduct tankerOffshore supply vesselCruise liner (hotel load)Ro‑Ro ferry

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a proven 710 kVA auxiliary generator with robust Class H insulation, integrated AVR options and IP44 protection for medium‑sized vessels that can accommodate low‑voltage equipment. Avoid if the vessel requires higher voltage output (≥6.3 kV), dust‑tight enclosure (IP65+), or has severe space/weight constraints that favour compact diesel sets.

Use Cases: Provides reliable hotel power and emergency generation on container, bulk carrier and tanker vessels; supplies auxiliary loads on cruise ships and offshore support vessels; can be paired with step‑up transformers for integration into higher‑voltage shipboard distribution networks.

Manufacturer Datasheet

Datasheet

AMG 0710-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 protection suitable for harsh salt‑water environments
H‑class insulation allows operation up to +180 °C ambient temperature
Dual cooling options (air‑axial fans and optional water cooling) increase flexibility in hot climates
Compatible with ABB UNITROL 1000 or GEN series AVR systems for precise voltage regulation
Proven ABB reliability and extensive service network worldwide

Weaknesses

Relatively large footprint and weight compared with compact diesel‑generator sets of similar rating
Requires skilled personnel for VPI insulation inspection and bearing maintenance
Fixed 50 Hz frequency may limit use on vessels standardized on 60 Hz systems
Initial capital cost higher than some competing manufacturers

Typical Vessels: Cruise shipContainer vesselBulk carrierOffshore supply vesselNaval auxiliary ship

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL classification approvalABS approved design

Decision Guide: Choose if you need a high‑power, weather‑proof generator with proven ABB AVR compatibility and dual cooling for vessels operating in severe marine conditions. Avoid if space or weight are critical constraints, the vessel operates on 60 Hz, or you lack access to qualified maintenance staff for VPI insulation checks.

Use Cases: Typically installed as main auxiliary power generation on medium‑to‑large ships, providing both continuous and emergency power; also used in shore‑power conversion plants where a stable 440 V/50 Hz supply is required.

Manufacturer Datasheet

Datasheet

AMG 0710-440V-60Hz-IP23

· synchronous marine generator

Power (kVA)

710

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (710 kVA) in a compact frame suitable for medium‑large vessels
Class H VPI insulation provides excellent resistance to moisture, salt and thermal ageing
Integrated UNITROL AVR offers precise voltage control and built‑in under/over‑excitation limits
Dual cooling options (air‑axial fans or water‑cooled) allow flexibility for different installation spaces
Sealed‑for‑life bearings (frame <400) reduce routine lubrication maintenance

Weaknesses

IP23 rating protects only against solid objects >12.5 mm; not dust‑tight and limited splash protection
Fixed 440 V output may require step‑up transformers for vessels that operate at higher bus voltages
Physical size and weight are substantial, limiting suitability for small or space‑constrained ships
VPI system requires specialised inspection (partial discharge testing) to verify insulation health
Initial capital cost is higher than lower‑rated generators from some competitors

Typical Vessels: Container shipCruise linerOil tanker / product tankerLNG carrierOffshore supply vesselNaval auxiliary ship

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a reliable 710 kVA auxiliary power source with robust H‑class insulation, integrated AVR and flexible cooling for medium‑large merchant or offshore vessels where space permits. Avoid if the installation requires higher bus voltage without transformation, tighter environmental protection (e.g., IP55), very limited deck space, or a lower upfront budget.

Use Cases: Typically installed as main auxiliary generators on large commercial ships to supply hotel load and emergency power; also used in offshore support vessels where high reliability and resistance to harsh marine conditions are critical.

Manufacturer Datasheet

Datasheet

AMG 0710-440V-60Hz-IP44

· synchronous marine generator

Power (kVA)

710

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (710 kVA) in a compact frame suitable for medium‑size vessels
Robust class H VPI insulated windings with proven ageing resistance (IEC 60034‑18‑32)
Integrated ABB UNITROL AVR provides precise voltage regulation and protection limits
IP44 enclosure offers good protection against spray and dust while allowing easy deck installation
Dual axial fans enable both air‑only and water‑air hybrid cooling for varied operating climates

Weaknesses

IP44 rating is not fully sealed (e.g., IP55), so additional sealing may be required in harsh spray zones
Bearings on frames ≥450 require periodic greasing, increasing maintenance effort compared to sealed‑for‑life designs
Fixed 60 Hz frequency limits use on vessels standardized on 50 Hz systems
Large physical footprint and weight (not specified) can restrict installation in space‑constrained engine rooms
Higher initial capital cost relative to basic low‑cost generators

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG/LPG carrier (auxiliary power)

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a reliable 710 kVA auxiliary generator with ABB’s global support, integrated UNITROL AVR and flexible cooling for vessels operating in temperate to hot climates. Avoid if the installation demands higher ingress protection (IP55+), strictly 50 Hz operation, or minimal maintenance bearing solutions.

Use Cases: Typically installed as the main auxiliary power source on medium‑size merchant ships, providing propulsion support, hotel load supply and emergency power. Also used on offshore platforms where robust, low‑maintenance generators are required for continuous shore‑power generation.

Manufacturer Datasheet

Datasheet

AMG 0710-440V-60Hz-IP55

· synchronous marine generator

Power (kVA)

710

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 sealed enclosure suitable for salty and humid conditions
High insulation class H with VPI (vacuum pressure impregnation) for excellent thermal endurance
Dual axial fans allow optional air or water cooling, extending operating range to +45 °C
Integrated ABB UNITROL AVR series provides precise voltage regulation and protection limits
Modular frame sizes (400‑630) enable flexible installation on a variety of vessel layouts

Weaknesses

Physical size and weight are significant for a 710 kVA unit, requiring ample engine‑room space
Requires skilled maintenance (VPI insulation testing, bearing greasing) to preserve reliability
Designed for 60 Hz operation only; vessels standardized on 50 Hz would need a different model
Cooling performance depends on clean airflow or water circuits; fouling can quickly degrade output
Initial capital cost is higher than smaller diesel‑alternator sets

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL class approvalABS class approval

Decision Guide: Choose if you need a high‑power, weather‑proof synchronous generator with proven ABB AVR control for large merchant or offshore vessels operating on 60 Hz. Avoid if vessel space is limited, the fleet runs on 50 Hz standards, or you prefer a lower‑cost diesel‑alternator solution with less maintenance overhead.

Use Cases: Typically installed as main auxiliary power source on large commercial ships to supply propulsion auxiliaries, hotel loads and emergency power; also used on offshore platforms where reliable, continuously regulated electricity is critical.

Manufacturer Datasheet

Datasheet

AMG 0710-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (710 kVA) in the LV range suitable for main hotel load or emergency power.
Robust VPI (vacuum pressure impregnation) Class H insulation provides excellent thermal endurance and moisture resistance.
Dual‑axial fan design allows flexible air‑ or water‑cooled operation, improving cooling efficiency in varied climates.
Integrated ABB UNITROL 1000/GEN AVR family offers precise voltage regulation and built‑in under/over‑excitation protection.
Standardised frame sizes (400–630) simplify installation and spare‑part logistics across the fleet.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; it is not fully sealed against water spray, limiting placement in harshly exposed deck locations.
Bearings on frames <400 are sealed‑for‑life, but larger frames (450 and above) require periodic greasing and monitoring.
Physical footprint of a 710 kVA unit can be sizable for vessels with limited engine‑room space.
VPI insulation, while durable, is sensitive to prolonged moisture ingress; strict humidity control during maintenance is required.

Typical Vessels: Container shipCrude oil tankerProduct tankerCruise linerOffshore supply vesselLNG carrier

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL Marine Equipment approvalIMO D‑2 environmental standard

Decision Guide: Choose if you need a proven 710 kVA LV generator with flexible cooling, robust Class H insulation and integrated ABB AVR for large merchant or cruise vessels where space permits an IP23 enclosure. Avoid if the installation area is exposed to heavy spray or seawater ingress requiring higher IP ratings, or when weight/space constraints favor more compact, fully sealed units.

Use Cases: Typically installed as a main auxiliary generator supplying hotel power and emergency load on large tankers, container ships and cruise vessels; also used in offshore platform power plants where reliable, high‑capacity generation and easy integration with ABB control systems are required.

Manufacturer Datasheet

Datasheet

AMG 0710-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (710 kVA) suitable for large auxiliary power plants
Robust VPI insulation class H provides excellent thermal endurance
Dual‑axial fan design allows flexible air or water cooling in harsh environments
IP44 enclosure protects against splashing salt spray while allowing easy access for maintenance
ABB’s proven service network and condition monitoring (LEAP) tools

Weaknesses

IP44 rating is only splash‑proof; not suitable where full dust/water ingress protection (e.g., IP66) is required
Greaseable bearings on frame 710 require periodic re‑greasing, increasing maintenance effort
Physical footprint and weight are large compared with compact diesel generators of similar rating
Requires dedicated cooling ducting or water‑cooling loop; installation complexity can be high
Initial capital cost is higher than many conventional low‑speed diesel gensets

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>10,000 TEU)Cruise linersOffshore supply vesselsLNG carriers

Certifications: DNV GLABSLR

Decision Guide: Choose if you need a high‑capacity (≈700 kVA) auxiliary generator with proven ABB reliability, class‑H insulation and flexible air/water cooling for large commercial vessels. Avoid if space is at a premium, you require a fully sealed (IP66+) unit, or you prefer low‑maintenance bearing‑less designs.

Use Cases: Typically installed as part of the main auxiliary power plant on large tankers, container ships and cruise vessels to supply hotel loads, cargo handling equipment, and emergency power. Frequently paired with other generators for load sharing and redundancy, and integrated with ABB’s remote monitoring platforms for condition based maintenance.

Manufacturer Datasheet

Datasheet

AMG 0710-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 enclosure protects against salt spray and water ingress.
Class H VPI insulation provides excellent thermal endurance and moisture resistance.
Integrated UNITROL AVR (1000 series) offers precise voltage regulation with under/over‑excitation limits.
Dual axial fans give flexible air or water cooling for a wide ambient temperature range (-20 °C to +45 °C).
Sealed‑for‑life bearings on frames <400 reduce routine lubrication requirements.

Weaknesses

Large physical footprint and high weight compared with newer compact generator concepts.
Frames ≥450 require periodic bearing re‑greasing, adding maintenance effort.
Designed for 50 Hz; a separate 60 Hz version is required for vessels operating on that frequency.
Sensitive to moisture ingress in the stator winding – strict humidity control and regular insulation testing are mandatory.
Higher initial capital cost relative to smaller or modular generator sets.

Typical Vessels: Cruise shipLNG carrierOffshore support vesselContainer shipProduct tanker

Certifications: DNV GL Type ApprovalABS ClassificationLloyd's Register CertificationIEC 60034‑18‑32 (insulation ageing standard)IEEE Std 117‑1974

Decision Guide: Choose if you need a high‑power, temperature‑tolerant LV generator with proven reliability for harsh marine environments and integrated AVR control. Avoid if vessel space or weight is at a premium, the installation must run exclusively on 60 Hz, or your maintenance regime cannot support periodic bearing re‑greasing and rigorous insulation testing.

Use Cases: Commonly installed as main auxiliary power on large passenger vessels, cruise ships and LNG carriers to supply hotel loads and emergency power; also used on offshore supply vessels where robust, low‑maintenance generation is required for both normal operation and standby duty.

Manufacturer Datasheet

Datasheet

AMG 0710-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (710 kVA) in a compact LV frame suitable for many auxiliary applications
Class‑H VPI insulation provides excellent thermal endurance and moisture resistance
Dual cooling options (air‑only or air/water) allow adaptation to vessel climate conditions
Integrated UNITROL AVR series offers precise voltage regulation and overload protection
Proven ABB reliability with extensive service network and condition monitoring tools

Weaknesses

IP23 enclosure protects against splashing water only; not suitable for fully sealed compartments
Large physical footprint compared with newer compact generator concepts
Requires diligent moisture control to prevent insulation degradation in tropical climates
Fixed 690 V output may need step‑up transformers for vessels operating at higher bus voltages
Higher upfront capital cost relative to basic low‑cost alternatives

Typical Vessels: Cruise shipsContainer vesselsBulk carriersTanker (product/LNG)Offshore supply & platform support vesselsNaval auxiliary ships

Certifications: IMO D‑2USCG Type ApprovalDNV Classification

Decision Guide: Choose if you need a reliable 710 kVA auxiliary generator with robust class‑H insulation, flexible cooling and integrated ABB AVR for vessels that already use ABB electrical systems. Avoid if space is at a premium, the vessel requires a higher nominal voltage without transformers, or budget constraints favour lower‑cost generators with less stringent environmental protection.

Use Cases: Typically installed as an auxiliary/main generator on cruise liners for hotel load, on container and tanker ships to supply propulsion auxiliaries and emergency power, and on offshore support vessels where dual cooling and high thermal endurance are critical in hot, humid operating zones.

Manufacturer Datasheet

Datasheet

AMG 0710-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

710

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density in a compact LV frame (400–630 series) suitable for medium‑size vessels
Robust H‑class VPI insulation provides excellent thermal endurance and moisture resistance
Integrated UNITROL AVR system offers precise voltage regulation with UEL/OEL protection
Flexible cooling options (dual axial fans, optional water‑cooling) adapt to varied ambient conditions
Fully compliant with IEC 60034‑18‑32, IEEE 117 and widely accepted class society approvals

Weaknesses

Limited to 690 V output; vessels requiring higher bus voltages need step‑up transformers
IP44 rating protects against splashing water only – not fully sealed against heavy spray or immersion
Physical footprint and weight are significant for small craft or retrofits with tight space constraints
Maintenance of VPI insulation and bearing lubrication requires skilled personnel and periodic testing
Initial acquisition cost is higher than basic low‑spec generators

Typical Vessels: Product Tanker (30–50 k DWT)Feeder Container ShipBulk Carrier (up to ~20 k DWT)Offshore Supply VesselCruise Ship Hotel Load GeneratorGeneral Cargo Vessel

Certifications: DNV GL Type ApprovalABS Classification Society ApprovalLloyd's Register ApprovalIMO D‑2 (electrical installation standard)IEC 60034‑18‑32

Decision Guide: Choose if you need a reliable 710 kVA auxiliary power source at 690 V with proven H‑class insulation, integrated AVR and flexible cooling for medium‑size commercial vessels. Avoid if the vessel operates on higher voltage bus systems (>690 V), has severe space/weight limitations, or requires a fully sealed (IP66+) enclosure.

Use Cases: Typically installed as an auxiliary generator supplying hotel load, cargo handling equipment, and emergency power on mid‑size tankers, feeder container ships, offshore support vessels, and cruise ships. It also serves as a standby unit for propulsion generators where redundancy is required.

Manufacturer Datasheet

Datasheet

AMG 0710-690V-60Hz-IP55

· synchronous marine generator

Power (kVA)

710

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (710 kVA) in a compact LV frame suitable for most auxiliary power plants
IP55 sealed enclosure protects against salt spray, dust and splashing water
Class‑H VPI insulation provides excellent thermal endurance up to +180 °C
Dual axial fans allow flexible air or water cooling and operate from –20 °C to +45 °C
Integrated UNITROL AVR (1000 series) offers precise voltage regulation with UEL/OEL protection

Weaknesses

Physical size and weight are significant for vessels with limited engine‑room space
Requires regular insulation testing (Megger, tan‑delta) to monitor moisture ingress in marine service
Standard cooling is air‑forced; hot climates may need additional water‑cooling provisions
Only 60 Hz version – not directly interchangeable with 50 Hz fleets without rewinding or derating

Typical Vessels: Container shipBulk carrierProduct tankerCruise linerOffshore supply vessel

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974 (generator construction)

Decision Guide: Choose if you need a reliable 700 kVA auxiliary generator for vessels operating in salty, humid environments and can accommodate the unit’s footprint; its IP55 rating and class‑H insulation give long service life with minimal downtime. Avoid if space or weight constraints are critical, if a 50 Hz system is required, or if you lack access to qualified personnel for periodic insulation and bearing inspections.

Use Cases: Typically installed as the primary service generator on medium‑size cargo vessels, providing power for propulsion auxiliaries, hotel loads, and emergency systems. It is also used in redundant configurations where one unit can serve as a standby emergency generator, benefiting from its robust enclosure and built‑in AVR for stable voltage under varying load conditions.

Manufacturer Datasheet

Datasheet

AMG 0800-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (800 kVA) in a compact LV frame suitable for many vessel sizes
Class H VPI insulated windings give excellent thermal endurance and moisture resistance
Integrated UNITROL AVR provides stable voltage regulation and built‑in under/over‑excitation limits
Sealed‑for‑life bearing design (frame <400) reduces routine lubrication maintenance
Proven ABB Marine product line with extensive field service support

Weaknesses

IP23 rating only protects against limited water ingress; additional sealing may be required in heavy spray zones
Axial fan cooling can lose efficiency if salt deposits are not regularly cleaned
Insulation condition must be monitored closely (partial‑discharge, IR testing) due to marine humidity exposure
Physical size and weight are relatively large for vessels with tight space constraints
Not suitable for high‑voltage (>690 V) or ultra‑high‑power (>1 MVA) applications

Typical Vessels: Cruise shipsRo‑Ro ferriesOffshore support vesselsContainer ships (auxiliary power)Tankers (hotel load generation)

Decision Guide: Choose if you need a reliable 800 kVA auxiliary generator with built‑in AVR, Class H insulation and proven ABB service network for medium‑size vessels operating in standard marine environments. Avoid if the installation requires higher ingress protection (IP55+), very compact footprint, or power ratings above 1 MVA.

Use Cases: Provides hotel load electricity, emergency power, and backup generation on passenger ships, ferries and offshore supply vessels; often installed alongside diesel engines to meet IMO regulations for redundancy and emissions control.

Manufacturer Datasheet

Datasheet

AMG 0800-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (800 kVA) in a compact frame suitable for medium‑size vessels
Class H VPI insulated windings provide excellent thermal endurance
IP44 rating protects against splashing and dust in harsh marine environments
Dual axial fan design allows flexible air or water cooling options
Integrated UNITROL AVR with UEL/OEL limiters ensures stable voltage regulation

Weaknesses

Requires regular moisture/insulation resistance testing due to marine humidity exposure
IP44 does not protect against full submersion; additional sealing may be needed in very wet areas
Large physical footprint and weight can limit installation on small vessels
Cooling performance depends on clean airflow; fouled fans reduce efficiency
Maintenance of VPI insulation and sealed‑for‑life bearings demands skilled personnel

Typical Vessels: Container shipBulk carrierTankerCruise vesselOffshore supply vessel

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose this generator when you need a reliable 800 kVA auxiliary power source with high temperature tolerance, proven ABB AVR control and IP44 protection for medium‑size commercial vessels. Avoid it on very small craft where space and weight are critical, or on ships that require higher voltage outputs without additional step‑up gear.

Use Cases: Main auxiliary power plant for hotel load, emergency generators, dynamic positioning support, and shore‑side power supply on tankers, container ships, bulk carriers and cruise liners operating in harsh marine climates.

Manufacturer Datasheet

Datasheet

AMG 0800-400V-50Hz-IP55

· marine synchronous generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure resists salt spray and dust, ideal for harsh marine environments
Class H VPI‑impregnated windings give excellent thermal endurance and long service life
Dual cooling options (air‑only or air/water) allow adaptation to vessel HVAC constraints
Integrated UNITROL 1000/GEN AVR provides precise voltage regulation with UEL/OEL protection
Standardised bearing designs (sealed‑for‑life up to frame 400) reduce routine lubrication needs

Weaknesses

Physical footprint and weight are significant for vessels with limited engine‑room space
Fixed 400 V output may require step‑up transformers on ships that operate at higher bus voltages
Maintenance of VPI windings and sealed bearings demands specialised marine‑qualified personnel
Initial capital cost is higher than lower‑rated or less robust generators
Requires dedicated ventilation to keep inlet air within –20 °C to +45 °C design limits

Typical Vessels: Large crude oil tankersContainer ships (>5,000 TEU)Cruise linersOffshore supply vessels (OSV)LNG carriersNaval auxiliary and support ships

Certifications: DNV GLABSLR

Decision Guide: Choose if you need a high‑power (≈800 kVA) auxiliary generator with proven marine durability, IP55 protection and flexible cooling for large merchant or offshore vessels. Avoid if space, weight or budget constraints dominate, or if the ship’s electrical system requires a higher primary voltage without additional transformation.

Use Cases: Typically installed as a main auxiliary power source to supply propulsion‑related hotel loads, emergency generators, dynamic positioning thruster power, and shore‑side power conversion on large commercial ships where reliability and resistance to salt‑water corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 0800-400V-60Hz-IP23

· synchronous marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density – 800 kVA in a compact LV frame (800) suitable for medium‑size vessels
VPI H‑class insulation provides excellent thermal endurance and moisture resistance
Dual axial‑fan cooling allows operation with air or water cooling depending on ship layout
Integrated ABB UNITROL/GEN AVR options simplify voltage regulation and protection
Sealed‑for‑life bearing design (frame <400) reduces routine lubrication requirements

Weaknesses

IP23 enclosure offers limited protection against splashing water; not suitable for harsh wet‑deck locations without additional shielding
Large physical footprint compared with newer high‑speed permanent‑magnet generators
Requires regular insulation resistance and partial‑discharge testing in marine environments
Maintenance of axial fans and bearing seals can be labour‑intensive on older installations
Weight and mounting provisions may exceed limits on vessels with strict space/weight constraints

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose this generator when you need a proven, high‑output LV marine alternator with robust H‑class insulation and flexible cooling options for vessels in the 800 kVA class. Avoid it if space is at a premium, an IP55+ enclosure is required, or you prefer a lighter, higher‑speed permanent‑magnet solution.

Use Cases: Typically installed as the main auxiliary generator on medium‑size merchant ships and offshore support vessels, providing continuous power for hotel loads, cargo handling equipment, and emergency generators. Also used in dual‑fuel or hybrid propulsion plants where a stable AC source is required for converters and motor drives.

Manufacturer Datasheet

Datasheet

AMG 0800-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High short‑circuit rating and robust Class H VPI insulation suitable for harsh sea‑water environments
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C
Sealed‑for‑life bearings on frames <400 reduce maintenance intervals; larger frames have greasable bearings for extended service life
Standard 400 V output matches most shipboard distribution systems and integrates with ABB UNITROL AVR series for precise voltage regulation
Proven ABB brand reputation and global support network

Weaknesses

IP44 rating provides only limited protection against dust ingress; not suitable for areas exposed to heavy spray without additional shielding
Physical footprint and weight are significant compared to compact diesel generators, limiting installation on smaller vessels
Frames ≥450 require periodic bearing re‑greasing, increasing maintenance effort
Only 60 Hz version available – not directly compatible with 50 Hz regional grids without a frequency converter
Higher capital cost relative to basic low‑cost generator sets

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise ship

Decision Guide: Choose if you need a reliable 800 kVA generator with robust Class H insulation, flexible cooling and ABB’s global service support for medium‑ to large‑size vessels operating in harsh marine environments. Avoid if the installation space is constrained, a higher dust‑tight rating (IP65+) is required, or a lower‑cost, compact generator is preferred.

Use Cases: Typically installed as the main auxiliary power source on tankers and container ships, providing shipboard electricity for cargo handling equipment, hotel loads, and emergency power. Also used on offshore supply vessels where high reliability and resistance to salt‑water corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 0800-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (800 kVA) suitable for large auxiliary power demands
IP55 sealed enclosure resists salt spray and moisture ingress
Class H VPI‑impregnated windings provide excellent thermal and moisture resistance
Dual axial fan cooling with optional water‑cooling gives flexible temperature management
Integrated UNITROL AVR (1000 series) offers precise voltage regulation and protection limits

Weaknesses

Large physical footprint and weight typical of high‑power frame sizes (requires substantial engine room space)
Bearings may be sealed‑for‑life only up to frame 400; larger frames need periodic greasing, increasing maintenance
Initial capital cost is higher than lower‑rated or non‑ABB alternatives
Requires careful commissioning and regular vibration/temperature monitoring to avoid premature bearing wear
Fixed 400 V output may necessitate additional transformers for vessels standardising on higher voltages

Typical Vessels: Cruise shipLNG carrierLarge container vesselBulk carrierOffshore supply vesselNaval auxiliary ship

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV class approvalABS classificationLloyd's Register approval

Decision Guide: Choose if you need a reliable 800 kVA auxiliary generator for vessels with high hotel load, require robust protection against marine corrosion and temperature extremes, and value ABB’s global service network. Avoid if engine‑room space is severely constrained, the vessel operates on a higher voltage bus without step‑up transformers, or budget constraints outweigh the benefits of the integrated AVR and Class H insulation.

Use Cases: Typically installed as the main auxiliary generator set on large merchant ships to supply hotel services, cargo handling equipment, and emergency power; also used as standby generators on offshore platforms and naval support vessels where high reliability in a salty environment is critical.

Manufacturer Datasheet

Datasheet

AMG 0800-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High short‑circuit capacity typical of synchronous machines, providing robust grid support
Class H VPI insulated windings give excellent thermal endurance and moisture resistance
Dual axial fans with optional water‑cooling allow flexible cooling in varied climates
Integrated UNITROL or GEN AVR options simplify voltage regulation and protection
Sealed‑for‑life bearings on frames <400 reduce maintenance, while larger frames are re‑greasable

Weaknesses

IP23 enclosure offers limited protection against dust and water ingress compared with higher IP ratings
Cooling relies on ambient airflow; performance can degrade in very hot or high‑humidity environments
Re‑greasable bearings on larger frames require periodic maintenance
Physical footprint is larger than newer permanent‑magnet or hybrid generators of similar rating
Standard output 440 V/50 Hz may need step‑down transformers for vessels using other voltage/frequency standards

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore support vessel

Decision Guide: Choose if you need a proven synchronous generator with high short‑circuit capability, robust VPI insulation and flexible cooling for medium‑size vessels operating at 440 V/50 Hz. Avoid if the installation demands higher IP protection, lower maintenance permanent‑magnet technology, or space‑critical solutions.

Use Cases: Provides primary auxiliary power for hotel loads, emergency generation, and propulsion auxiliaries on medium‑sized merchant ships; commonly installed in engine rooms as a standby generator coupled to diesel engines or as part of an integrated power plant.

Manufacturer Datasheet

Datasheet

AMG 0800-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal endurance thanks to class‑H VPI insulation, suitable for hot climates
Sealed‑for‑life or regreaseable bearing design reduces routine maintenance
IP44 enclosure protects against splashing water and salt spray typical on ships
Dual axial fans provide flexible air cooling; optional water‑cooling available
Proven ABB UNITROL AVR integration for precise voltage regulation

Weaknesses

Physical footprint and weight are significant for vessels with limited machinery space
Requires skilled personnel for VPI insulation inspection and bearing monitoring
IP44 is not dust‑tight; additional sealing may be needed in very dusty compartments
Initial capital cost higher than comparable low‑speed diesel‑engine generators
Dependence on separate AVR unit adds complexity to the control system

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vesselNaval auxiliary

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a robust 800 kVA, 440 V generator with high‑temperature insulation, low routine bearing maintenance and proven class‑society approvals for large merchant or offshore vessels. Avoid if space is at a premium, power demand is below 500 kVA, or you prefer an integrated engine‑alternator set with fewer auxiliary components.

Use Cases: Main auxiliary power generation on large commercial ships, emergency standby power, shore‑power conversion units on cruise and tanker platforms, and as part of the electrical plant on offshore production vessels where reliability and resistance to marine corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 0800-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density – 800 kVA in a compact LV frame (400‑630) suitable for large vessels
Robust IP55 enclosure and H‑class vacuum pressure impregnation insulation resist corrosion and moisture ingress
Integrated UNITROL AVR with UEL/OEL limits provides stable voltage regulation under varying loads
Dual axial fans with optional water‑cooling give flexible cooling options for tropical or high‑temperature environments
Sealed‑for‑life bearing option reduces routine lubrication maintenance

Weaknesses

Large physical footprint and weight compared with newer compact generator sets
Requires skilled inspection of VPI insulation and periodic IR/megger testing to verify winding health
Standard model is limited to 50 Hz operation; vessels requiring 60 Hz need a different variant
Bearing temperature monitoring is critical – non‑sealed bearings still need regular greasing
Initial capital cost higher than basic diesel generators of similar rating

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: DNVABSIMO D-2

Decision Guide: Choose if you need a reliable 800 kVA auxiliary power source for large vessels operating in corrosive marine environments, value long‑life H‑class insulation and integrated voltage regulation, and have the maintenance capability for periodic VPI inspections. Avoid if space or weight are at a premium, the vessel operates on 60 Hz, or you lack access to qualified electrical technicians for winding health monitoring.

Use Cases: Typically installed as the main auxiliary generator on large tankers, container ships and cruise vessels, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. Also used on offshore platforms where robust, low‑maintenance generation is required.

Manufacturer Datasheet

Datasheet

AMG 0800-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (800 kVA) in a compact LV frame suitable for many vessel sizes
Class H insulation (180 °C) provides excellent thermal endurance and reliability
Flexible cooling options – axial fans with optional water‑cooling – adapt to ambient conditions
Integrated ABB UNITROL/GEN AVR families give precise voltage regulation and protection limits
Proven ABB service network and condition monitoring (ABB Ability LEAP) for predictive maintenance

Weaknesses

IP23 rating only protects against limited splashing; additional shielding needed in wet deck locations
Physical size and weight may be restrictive on smaller vessels or retrofits
Frames below 400 require sealed‑for‑life bearings, while larger frames need periodic greasing
VPI insulation quality must be monitored; moisture ingress can degrade performance over time
Standard cooling fans can become fouled by salt deposits, requiring regular cleaning

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose this generator when you need a reliable 800 kVA auxiliary source with class H insulation, flexible cooling and ABB’s integrated AVR options on vessels that can accommodate an IP23 enclosure. Avoid it for applications requiring higher ingress protection (e.g., exposed deck installations) or where space/weight constraints are critical.

Use Cases: Typically installed as the main service generator on large merchant ships, providing shipboard electricity for propulsion auxiliaries, hotel loads and emergency power; also used in dual‑generator configurations for redundancy on cruise ships and offshore vessels.

Manufacturer Datasheet

Datasheet

AMG 0800-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) tolerates ambient temperatures up to +45 °C, reducing risk of thermal ageing.
Dual cooling options (air‑flow and optional water‑cooling) provide flexibility for different vessel layouts.
Sealed‑for‑life bearings (frame ≤400) lower routine maintenance requirements in corrosive marine environments.
Integrated UNITROL or GEN AVR families give precise voltage regulation and built‑in under/over‑excitation protection.
Complies with IEC 60034‑18‑32 and is classed by major societies, facilitating installation approvals.

Weaknesses

IP44 rating protects against splashing water only; not suitable for areas exposed to heavy spray or direct immersion.
Physical footprint and weight are significant for small vessels where space and mass budgets are tight.
Requires periodic insulation resistance and partial‑discharge testing to verify VPI condition, adding inspection overhead.
Initial capital cost is higher than lower‑rated generators of comparable size.
Only 60 Hz operation; ships standardising on 50 Hz would need a different model.

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise linerRo‑Ro ferry

Certifications: DNV GLABSLloyd's Register

Decision Guide: Choose if you need a robust 800 kVA auxiliary power source on a medium‑to‑large vessel, value low‑maintenance sealed bearings and high‑temperature insulation, and can accommodate the IP44 enclosure. Avoid if space is at a premium, the installation requires a higher ingress protection rating, or the ship operates on 50 Hz.

Use Cases: Typically installed as an auxiliary generator for main‑engine start‑up, hotel load supply, and emergency power on tankers, container ships and offshore support vessels. Also used in cruise ships to feed critical hotel services and in Ro‑Ro ferries where flexible cooling is advantageous.

Manufacturer Datasheet

Datasheet

AMG 0800-440V-60Hz-IP55

· synchronous marine generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (800 kVA) in a single unit, suitable for large auxiliary loads
IP55 sealed enclosure resists salt spray and dust, ideal for harsh marine environments
Class H insulation allows operation up to +180 °C, extending service life under heavy load
Flexible cooling options (dual axial fans with optional water‑cooling) adapt to ambient conditions
Integrated ABB UNITROL/GEN AVR provides precise voltage regulation and built‑in over/under‑excitation protection

Weaknesses

Physical size and weight are substantial; may limit installation on smaller vessels or retrofits
Requires regular insulation testing (Megger, PD) to monitor moisture ingress typical of marine service
Maintenance demands skilled personnel for VPI‑type winding inspection and bearing servicing
Standard output is 440 V; higher shipboard voltages need step‑up transformers adding cost and space
Initial capital expense is higher than lower‑rated generators

Typical Vessels: Container shipsCrude oil tankersLNG carriersCruise linersOffshore supply vesselsNaval auxiliary ships

Certifications: DNV GL Type ApprovalABS Approved Marine GeneratorIEC 60034‑18‑32 (insulation ageing) complianceIEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 800 kVA auxiliary power source for large vessels, require robust protection against salt spray and high operating temperatures, and have the space and skilled crew to maintain a VPI‑type synchronous generator. Avoid if vessel size or weight constraints are critical, the ship’s electrical system operates at higher voltages without transformers, or maintenance resources for regular insulation testing are limited.

Use Cases: The AMG 0800 is typically installed as a main auxiliary generator on large merchant ships to supply hotel loads, cargo handling equipment, and emergency power. It also serves as a standby unit in cruise liners and offshore vessels where redundancy and rapid load response are essential.

Manufacturer Datasheet

Datasheet

AMG 0800-690V-50Hz-IP23

· low‑voltage synchronous marine generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (800 kVA) in a compact LV frame (400–630 series)
VPI vacuum pressure impregnation with insulation class H provides excellent moisture resistance and long life
Dual cooling options – axial fans for air cooling or optional water‑cooled jackets – suited to varied climate zones
Integrated ABB UNITROL/GEN AVR families offering precise voltage regulation and built‑in under/over‑excitation protection
Widely accepted by major classification societies (DNV, ABS, LR) and compliant with IEC 60034‑18‑32

Weaknesses

IP23 rating only protects against splash; not suitable for environments requiring full dust/water ingress protection (e.g., IP55+)
Large footprint compared with newer compact generator sets, impacting tight engine‑room layouts
Standard bearing design requires periodic greasing or monitoring unless a sealed‑for‑life version is specified
Output voltage limited to 690 V; higher shipboard voltages need step‑up transformers, adding cost and losses
Initial capital cost higher than some competing manufacturers for the same power class

Typical Vessels: Container shipsCruise linersBulk carriersLNG/LPG carriersOffshore supply vesselsRo‑Ro ferriesNaval auxiliaries

Certifications: DNV GL – Marine Generator ApprovalABS – Marine Equipment CertificationLR – Classification Society ApprovalIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven 800 kVA LV generator with robust H‑class VPI insulation, flexible cooling and integrated ABB AVR for reliable hotel‑load or emergency power on medium‑to‑large vessels. Avoid if space is at a premium, a higher voltage output (≥11 kV) is required without a transformer, or the installation demands an IP55+ sealed enclosure.

Use Cases: Typically installed as auxiliary generators supplying shipboard hotel services, cargo handling equipment, and emergency power on large merchant vessels; also used in offshore platform power plants where dependable, low‑voltage generation with easy maintenance access is critical.

Manufacturer Datasheet

Datasheet

AMG 0800-690V-50Hz-IP44

· Marine synchronous generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) with vacuum pressure impregnation gives excellent moisture resistance and long life.
Flexible cooling options – dual axial fans with optional water‑cooling – suitable for a wide ambient temperature range (-20 °C to +45 °C).
Integrated UNITROL or GEN AVR series provides precise voltage regulation and built‑in under/over‑excitation limits.
Standard IEC 60034‑18‑32 compliance ensures predictable insulation ageing and suitability for classification societies.
Modular frame (LV standard) simplifies installation and future upgrades.

Weaknesses

IP44 rating may require additional shielding in heavy spray zones or open deck installations.
Physical footprint and weight are considerable for an 800 kVA unit, limiting use on vessels with tight machinery spaces.
Maintenance‑intensive: VPI insulation demands regular moisture/IR testing and bearing lubrication checks.
Requires skilled personnel for AVR programming and partial‑discharge diagnostics.
Cooling performance can degrade if fan blades become salt‑laden; frequent cleaning is mandatory.

Typical Vessels: Container shipCrude oil tankerProduct tankerCruise linerOffshore supply vessel

Certifications: DNV GL Marine ApprovalABS ClassificationLloyd's Register Type ApprovalIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven 800 kVA auxiliary generator with high insulation class, flexible cooling and integrated AVR for medium‑size vessels where space permits. Avoid if the installation area is severely exposed to spray (requiring higher than IP44) or if weight/space constraints dominate the design.

Use Cases: Typically installed as a main auxiliary generator on large merchant ships to supply hotel loads, cargo handling equipment and emergency power; also used in cruise vessels for redundancy and in offshore support ships where reliable voltage regulation is critical.

Manufacturer Datasheet

Datasheet

AMG 0800-690V-50Hz-IP55

· synchronous marine generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 800 kVA suitable for large hotel‑load applications
IP55 sealed enclosure protects against salt spray and dust in harsh marine environments
Class‑H VPI insulation provides excellent thermal endurance up to +45 °C ambient
Dual axial fans with optional water‑cooling give flexible cooling options and stable temperature control
Sealed‑for‑life bearing design (frame <400) reduces routine maintenance

Weaknesses

Fixed synchronous speed limits fuel‑efficiency optimisation compared with variable‑speed gensets
Large physical footprint and weight may restrict installation on space‑constrained vessels
Requires a dedicated 50 Hz supply; not directly compatible with 60 Hz regions without transformer or frequency conversion
Higher capital cost than lower‑rated generators of the same family
Complex AVR (UNITROL) system adds diagnostic and spare‑part considerations

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Certifications: DNV GL class approvalABS class approvalIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a high‑power, low‑maintenance auxiliary generator for large vessels operating in harsh salt‑water environments and can accommodate the size and fixed 50 Hz output. Avoid if vessel space is limited, fuel‑efficiency at variable loads is critical, or a 60 Hz system is required without additional conversion equipment.

Use Cases: Typically installed as main auxiliary power on large merchant ships and cruise vessels to supply hotel load, cargo handling equipment, and emergency power. Also used on offshore platforms where robust protection against corrosion and high ambient temperatures are essential.

Manufacturer Datasheet

Datasheet

AMG 0800-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (800 kVA) in a compact frame suitable for medium‑size vessels
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Dual axial fan design allows flexible air or water cooling for varied operating climates
ABB’s proven AMG series offers extensive field support and condition‑monitoring tools (e.g., ABB Ability LEAP)
IP23 enclosure is splash‑proof, meeting typical deck‑mount requirements

Weaknesses

IP23 rating only protects against splashing; not dust‑tight or submersible
Bearings are greased (non‑sealed) for frames above 400, requiring regular lubrication checks
Fixed 690 V output may need step‑up transformers on ships that standardise on higher bus voltages
Physical footprint and weight are larger than low‑power auxiliary sets, limiting installation in tight spaces
Requires external AVR (UNITROL series) integration for voltage regulation

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: DNV GL class approvalABS approved marine generatorLloyd's Register classification

Decision Guide: Choose this unit when a ship needs a reliable 800 kVA auxiliary power source at 690 V, benefits from high‑temperature Class H insulation and dual‑mode cooling, and can accommodate an IP23 deck‑mount enclosure. Avoid if the vessel requires dust‑tight or fully sealed enclosures, higher bus voltages without additional transformers, or minimal maintenance bearing solutions.

Use Cases: Typically installed as a main auxiliary generator on medium to large commercial vessels, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. Frequently selected for retrofits where existing 690 V distribution systems are retained and space permits a deck‑mounted unit with robust cooling options.

Manufacturer Datasheet

Datasheet

AMG 0800-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (800 kVA) in a relatively small footprint for LV marine applications
Class H insulation and VPI construction provide excellent thermal endurance and moisture resistance
Dual cooling options (air‑only or air/water) allow adaptation to shipboard HVAC constraints
Integrated UNITROL/GEN AVR series offers precise voltage regulation with under/over‑excitation limits
Sealed‑for‑life bearings on frames <400 reduce routine greasing intervals

Weaknesses

IP44 rating limits exposure to direct water jets; additional shielding needed in wet deck areas
Large physical dimensions may restrict installation on vessels with tight engine‑room space
Maintenance of VPI insulated windings requires regular insulation resistance testing and moisture control
Cooling fans are prone to salt‑crystal buildup, demanding frequent cleaning in marine environments
Higher initial cost compared with simpler low‑power diesel generators

Typical Vessels: Cruise shipsRo‑Ro ferriesOffshore supply vesselsContainer ships (mid‑size)Naval auxiliaries

Certifications: IMO D-2

Decision Guide: Choose if you need a robust 800 kVA auxiliary generator with Class H insulation, flexible cooling and proven ABB AVR control for medium‑voltage shipboard power. Avoid if space is extremely limited, the installation area is exposed to heavy splashing (requires higher IP rating), or you prefer a low‑maintenance oil‑free alternative.

Use Cases: Provides main hotel load power on cruise vessels, emergency standby generation on ferries, auxiliary power for dynamic positioning systems on offshore supply ships, and bulk electricity for cargo handling equipment on container carriers.

Manufacturer Datasheet

Datasheet

AMG 0800-690V-60Hz-IP55

· marine synchronous generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (800 kVA) in a compact LV frame suitable for auxiliary power plants
IP55 sealed enclosure protects against salt spray and dust, extending service life in harsh marine environments
Class‑H VPI insulation system offers excellent thermal endurance and moisture resistance
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C up to 1000 m altitude
Integrated UNITROL/GEN AVR families provide precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

Physical size and weight are significant for vessels with limited engine‑room space
Maintenance of VPI insulation and sealed‑for‑life bearings requires specialized testing (megger, PD) and trained personnel
Only 690 V output; higher shipboard voltages need step‑up transformers adding cost and losses
Initial acquisition price is high compared with conventional diesel‑engine gensets of similar rating
Sensitive to moisture ingress; improper ventilation can accelerate insulation ageing

Typical Vessels: Cruise shipsLNG carriersOffshore supply vessels (OSV)Container shipsProduct tankersNaval auxiliary and support vessels

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNVGL class approval for marine generatorsABS approved equipment

Decision Guide: Choose if: you need a reliable 800 kVA auxiliary power source with proven class approvals, robust IP55 protection and flexible cooling for harsh sea conditions. Avoid if: space is at a premium, you require direct high‑voltage output without transformers, or you prefer lower‑cost diesel gensets with simpler maintenance.

Use Cases: The generator is typically installed as part of the ship’s auxiliary power plant to supply hotel loads, emergency power, and DP support on offshore vessels. It also serves as a shore‑power interface unit on cruise liners and LNG carriers where high continuous power and redundancy are mandatory.

Manufacturer Datasheet

Datasheet

AMG 0900-400V-50Hz-IP23

· synchronous marine generator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High temperature‑class H insulation allows operation in hot climates up to +45 °C.
VPI (vacuum pressure impregnation) insulation system provides excellent moisture resistance and dielectric strength.
Dual axial fans with optional water‑cooling give flexible cooling for varied ambient conditions.
Sealed‑for‑life bearing option reduces maintenance on frames <400, improving availability.
Standard 400 V output matches most shipboard distribution systems, simplifying integration.

Weaknesses

IP23 rating only protects against splashing; not suitable for areas with direct water jet exposure.
Fixed 400 V terminal voltage may require step‑up transformers on vessels that operate at higher bus voltages.
Large physical footprint and weight compared with newer compact generator sets of similar power.
Moisture ingress can still affect winding insulation; requires regular IR testing and PD monitoring.
Cooling performance depends on clean airflow; fan fouling in salty environments must be inspected frequently.

Typical Vessels: TankerContainer shipBulk carrierCruise shipOffshore supply vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven 900 kVA auxiliary generator with robust class H insulation, flexible cooling options and low‑maintenance sealed bearings for medium‑size vessels operating at 400 V. Avoid if the installation requires higher bus voltages, fully watertight enclosures (IP66) or a more compact power package.

Use Cases: Typically installed as main auxiliary generators on tankers, container ships and cruise liners to supply hotel loads, emergency power and support for dynamic positioning systems. Also used as standby units in offshore supply vessels where reliability and easy maintenance are critical.

Manufacturer Datasheet

Datasheet

AMG 0900-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) and VPI vacuum pressure impregnation gives excellent moisture resistance and long life.
Integrated UNITROL AVR provides precise voltage regulation and built‑in under/over‑excitation protection.
Dual cooling options (axial fans or water‑cooled) allow adaptation to varying ambient conditions.
Sealed‑for‑life bearings on frames <400 reduce routine maintenance intervals.
Modular design fits the 14 kVA–5 MW LV product line, simplifying spares management.

Weaknesses

IP44 rating offers only limited protection against splashing water and dust; harsher environments may require higher IP ratings.
Physical size and weight are relatively large for vessels with tight space constraints.
Designed for 50 Hz operation; ships standardized on 60 Hz would need a different model.
VPI insulation inspection requires specialized equipment and trained personnel.
Initial capital cost is higher than basic low‑cost alternators.

Typical Vessels: Offshore Supply Vessel (OSV)Platform Supply Vessel (PSV)Cruise Ship (hotel load auxiliary)Container Ship (emergency power)Bulk Carrier (auxiliary generator)

Certifications: IMO D‑2DNV GL Marine Electrical Equipment ApprovalABS Approved Marine Generator

Decision Guide: Choose if you need a reliable 900 kVA auxiliary generator with robust Class H insulation, integrated AVR and flexible cooling for medium‑size vessels operating at 50 Hz. Avoid if the installation space is severely limited, a higher IP rating (e.g., IP66) is required, or the vessel operates on 60 Hz power systems.

Use Cases: Typically installed as the main auxiliary generator on offshore supply and platform supply vessels to provide hotel loads, dynamic positioning support, and emergency power. Also used on cruise ships for hotel‑load redundancy and on larger container or bulk carriers where a high‑capacity, low‑maintenance generator is required for shore‑power compliance and backup.

Manufacturer Datasheet

Datasheet

AMG 0900-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 housing protects against dust and water spray in harsh marine environments.
VPI (vacuum pressure impregnation) H‑class insulation provides high dielectric strength and moisture resistance.
Dual axial fan cooling allows flexible air‑ or water‑cooled operation to match vessel layout.
Integrated UNITROL AVR offers precise voltage regulation with under/over‑excitation protection.
Sealed‑for‑life bearing options reduce maintenance intervals for frames below 400.

Weaknesses

Maximum output of 900 kVA may be insufficient for large vessels requiring >1 MW auxiliary power.
Double axial fans can generate higher acoustic noise compared with low‑speed blower designs.
VPI insulation, while durable, still requires regular IR and partial discharge testing in salty environments.
Initial capital cost is higher than basic open‑frame generators of similar rating.
Large physical footprint (LV frame 400–630) may limit installation space on compact vessels.

Typical Vessels: Medium‑size tankersContainer ships (up to 5,000 TEU)Cruise ferries and small cruise shipsOffshore supply vesselsNaval auxiliaries

Certifications: DNV GL approvalABS classification

Decision Guide: Choose if you need a dependable 900 kVA auxiliary generator with strong environmental protection, flexible cooling and built‑in AVR for medium‑size commercial or offshore vessels. Avoid if the vessel requires higher power output, ultra‑low noise operation, or has severe space constraints that favour compact open‑frame units.

Use Cases: Typically installed as a main service generator or part of an emergency power set on merchant ships, providing hotel loads, cargo handling equipment, and propulsion auxiliaries; also used on offshore platforms where robust protection against spray and salt is essential.

Manufacturer Datasheet

Datasheet

AMG 0900-400V-60Hz-IP23

· synchronous marine generator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (900 kVA) in a compact LV frame suitable for most merchant vessels
Class H vacuum‑pressure‑impregnated insulation provides excellent thermal endurance and moisture resistance
Integrated UNITROL AVR offers precise voltage regulation with under/over‑excitation protection
Dual axial fan design allows both air‑ and water‑cooled operation, enhancing flexibility in hot climates
ABB’s global service network and proven track record reduce life‑cycle cost

Weaknesses

IP23 rating only protects against splash; not suitable for heavily dusty or spray‑prone compartments without additional shielding
Fixed 400 V output may require step‑up transformers for vessels that operate at higher bus voltages
Size and weight of the LV frame (400–630) can be restrictive on smaller ships or retrofits
Moisture ingress remains a critical maintenance point; regular insulation resistance testing is mandatory
Cooling performance depends on unobstructed airflow, which can be limited in confined engine rooms

Typical Vessels: Container shipBulk carrierCrude oil tankerProduct tankerCruise linerOffshore supply vesselGeneral cargo vessel

Decision Guide: Choose if you need a reliable 900 kVA auxiliary generator with high‑temperature insulation, integrated AVR and the flexibility of air or water cooling on medium‑sized merchant vessels. Avoid if your installation space is severely limited, you require a dust‑tight enclosure (IP>23), or you prefer a direct higher‑voltage output without additional transformers.

Use Cases: Typically installed as main auxiliary power for hotel loads, cargo handling equipment and emergency supply on large commercial ships; also used in genset clusters supporting dynamic positioning systems where redundancy and rapid response are required.

Manufacturer Datasheet

Datasheet

AMG 0900-400V-60Hz-IP44

· synchronous marine generator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) with VPI vacuum pressure impregnation gives excellent moisture resistance and thermal capability.
Dual axial fan cooling with optional water‑cooling provides flexible temperature management in varied climates.
Sealed‑for‑life bearing option for frames <400 reduces maintenance; re‑greasable bearings available for larger frames.
Integrated UNITROL AVR series (1000, GEN06/GEN08) offers precise voltage regulation and built‑in under/over‑excitation limits.
Modular product line allows common spares across ABB’s LV generator families.

Weaknesses

IP44 rating protects only against splashing water; not suitable for environments requiring full dust/water tightness (e.g., IP66).
Fixed 400 V output may require step‑up transformers on vessels that standardise on higher bus voltages.
Larger frame versions need periodic bearing re‑greasing, increasing scheduled maintenance effort.
Physical dimensions and weight are substantial for small craft; installation space must be planned carefully.

Typical Vessels: Container ship (mid‑size)Cruise ferryOffshore supply vesselBulk carrier (medium tonnage)LNG/LPG carrier (auxiliary power)

Decision Guide: Choose if you need a robust 900 kVA auxiliary generator with high‑temperature insulation, flexible cooling options and ABB’s global support network. Avoid if the vessel requires a fully sealed enclosure, higher nominal voltage without additional transformers, or has strict weight/space constraints.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, cargo handling equipment, dynamic positioning systems, and emergency generators on medium‑size commercial vessels where reliability in harsh marine environments is critical.

Manufacturer Datasheet

Datasheet

AMG 0900-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure protects against salt spray and dust.
Class‑H VPI insulated windings give high thermal endurance (up to 180 °C).
Integrated UNITROL AVR provides automatic voltage regulation and protection limits.
Dual axial fan cooling allows flexible air or water‑cooled operation.
Sealed‑for‑life bearings (frame <400) reduce routine maintenance.

Weaknesses

Large physical footprint and weight require substantial engine room space.
Requires regular insulation resistance and vibration monitoring to detect moisture ingress.
Water‑cooled variant adds complexity with coolant piping and potential leaks.
Initial capital cost is higher than lower‑rated alternatives.
Only 60 Hz version; not suitable for vessels requiring 50 Hz operation.

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D‑2 (Electrical Machinery)DNV GL approval

Decision Guide: Choose if: you need a high‑power, class‑approved synchronous generator with robust IP55 protection and integrated AVR for main auxiliary power on large merchant vessels. Avoid if: engine‑room space is limited, you require a lightweight unit, or the vessel operates on a 50 Hz system.

Use Cases: Typically installed as an auxiliary generator to supply hotel load, cargo handling equipment, and emergency power on ocean‑going tankers, container ships and cruise vessels. Also used in standby/backup configurations where high reliability and rapid voltage regulation are critical.

Manufacturer Datasheet

Datasheet

AMG 0900-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) H‑class insulation provides high dielectric strength and moisture resistance.
Dual cooling options (air‑flow via twin axial fans, optional water‑cooling) allow operation in a wide ambient temperature range (-20 °C to +45 °C).
Integrated UNITROL AVR delivers precise voltage regulation with under/over‑excitation limiters.
Sealed‑for‑life bearing design (frame <400) reduces maintenance intervals compared with greased bearings.
Broad voltage compatibility (380–690 V, 50/60 Hz) fits most low‑voltage shipboard distribution systems.

Weaknesses

IP23 rating only protects against limited water spray; not suitable for areas with direct seawater exposure.
Large frame size (approx. 400 series) may require significant installation space on smaller vessels.
Moisture ingress can still affect insulation over time, necessitating regular IR and PD testing.
No built‑in redundancy; a single unit must be paired with an additional generator for critical emergency power.
Cooling performance depends on clean fan blades; salt‑spray fouling can reduce airflow if not maintained.

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Certifications: IEC 60034-18-32IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 900 kVA low‑voltage generator with high‑grade VPI insulation, dual cooling flexibility and integrated AVR for main or hotel load on medium‑size vessels. Avoid if the installation area requires higher ingress protection (IP≥55) or space constraints prevent a 400‑series frame.

Use Cases: Typically installed as an auxiliary power source to supply propulsion auxiliaries, hotel services, cargo handling equipment, and emergency generators on tankers, container ships and offshore support vessels where a stable 440 V three‑phase supply is required.

Manufacturer Datasheet

Datasheet

AMG 0900-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust Class H VPI (vacuum pressure impregnation) insulation gives high dielectric strength and long life in humid marine environments.
IP44 enclosure protects against splashing water and dust, suitable for typical engine‑room conditions.
Dual cooling options (air‑only or air/water) allow flexible installation on vessels with limited airflow or dedicated coolant loops.
Integrated ABB UNITROL AVR series provides precise voltage regulation and built‑in under/over‑excitation limiters.
Sealed‑for‑life bearings (frame <400) reduce routine lubrication maintenance.

Weaknesses

Physical size and weight are substantial for a 900 kVA unit, limiting fit on small or space‑constrained vessels.
Output voltage limited to 440 V; ships requiring higher distribution voltages need step‑up transformers, adding cost and losses.
IP44 rating does not protect against full immersion; additional waterproofing may be required in heavily sprayed areas.
VPI insulation must be periodically inspected (megger, tan‑delta) to detect moisture ingress, demanding skilled testing personnel.
Initial capital cost is higher than comparable low‑voltage diesel generators of similar kVA.

Typical Vessels: Container shipCruise linerBulk carrierOffshore supply vesselLNG/LPG carrier (mid‑size)Naval auxiliary

Certifications: DNV GLABS

Decision Guide: Choose if you need a high‑reliability 900 kVA generator with robust Class H insulation, flexible cooling and integrated AVR for medium‑to‑large vessels where space permits. Avoid if vessel size or weight constraints are critical, or if a higher native output voltage is required without additional transformers.

Use Cases: Typically installed as the main auxiliary power source on container and cruise ships, providing shipboard electricity and emergency power; also used on offshore platforms for shore‑power generation where dual cooling and high insulation class are advantageous.

Manufacturer Datasheet

Datasheet

AMG 0900-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (900 kVA) in a compact frame suitable for medium‑size vessels.
IP55 sealed enclosure protects against salt spray, dust and splashing water.
Class H VPI insulation gives excellent thermal endurance and moisture resistance.
Dual axial fan design allows flexible air or water cooling depending on installation constraints.
Integration with ABB UNITROL AVR series provides precise voltage regulation and built‑in over/under‑excitation protection.

Weaknesses

Physical size and weight may be excessive for small craft or retrofits.
Requires skilled personnel for insulation testing (IR, tan‑delta) and bearing maintenance on non‑sealed units.
Designed for 50 Hz operation; using at 60 Hz requires derating of power output.
Initial capital cost is higher than basic diesel generators without advanced AVR or VPI features.
Regular inspection of cooling fans and seals is mandatory to prevent performance loss in corrosive environments.

Typical Vessels: Container shipBulk carrierTankerRo‑Ro ferryOffshore supply vesselCruise ship

Certifications: IEC 60034-18-32IEEE Std 117-1974DNV GL Marine ClassificationABS

Decision Guide: Choose this generator when a vessel needs reliable 900 kVA power, operates in harsh marine conditions, and benefits from advanced AVR control and high‑temperature insulation. Avoid if the ship has severe space or weight constraints, operates primarily at 60 Hz without acceptable derating, or lacks access to qualified maintenance personnel for VPI‑based equipment.

Use Cases: The AMG 0900 is typically installed as the main auxiliary generator on mid‑size cargo vessels and offshore support ships where continuous, high‑capacity power is required for propulsion auxiliaries, hotel loads, and dynamic positioning systems. Its robust enclosure and cooling options make it suitable for tropical routes with high humidity and salt exposure.

Manufacturer Datasheet

Datasheet

AMG 0900-440V-60Hz-IP23

· synchronous marine generator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal endurance with Class H VPI insulation, reducing risk of winding failure in hot or humid conditions
Integrated ABB UNITROL AVR options provide precise voltage regulation and built‑in under/over‑excitation protection
Dual axial fan cooling allows flexible air‑only operation up to +45 °C ambient without external water cooling
ABB’s global service network and Ability LEAP condition‑monitoring tools enable predictive maintenance
Modular frame design (LV standard series) simplifies installation and alignment on a variety of vessel layouts

Weaknesses

IP23 rating protects against splashing water only; not suitable for areas prone to heavy spray or immersion without additional shielding
Requires regular insulation resistance and moisture testing due to sensitivity of VPI windings in marine atmospheres
Physical footprint and weight are relatively large for a 900 kVA unit, limiting placement on space‑constrained vessels
Designed for 60 Hz operation only; not directly interchangeable with dual‑frequency (50/60 Hz) fleets
Higher upfront capital cost compared with basic low‑cost alternators lacking advanced AVR and monitoring features

Typical Vessels: Container shipProduct tankerCruise linerOffshore supply vesselRo‑Ro ferry

Decision Guide: Choose this generator when you need a reliable 900 kVA auxiliary power source with high insulation class, integrated ABB AVR, and access to ABB’s predictive maintenance platform—especially on vessels operating in temperate climates where IP23 protection is sufficient. Avoid it if the installation space is extremely limited, if dual‑frequency capability or higher ingress protection (IP55/IP68) is required, or when budget constraints preclude the premium cost of advanced monitoring and VPI insulation.

Use Cases: Typically installed as a main auxiliary generator supplying hotel loads on cruise ships, providing emergency power on tankers and container vessels, and supporting offshore support vessels that require stable 440 V supply for cargo handling equipment and dynamic positioning systems.

Manufacturer Datasheet

Datasheet

AMG 0900-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (900 kVA) in a compact LV frame suitable for medium‑size vessels
Class H VPI insulated windings give excellent thermal endurance and moisture resistance
Dual cooling options (air‑only or air/water) allow adaptation to hot climates
Integrated UNITROL/GEN AVR series provides precise voltage regulation and overload protection
Modular product line enables easy spares compatibility with other ABB AMG generators

Weaknesses

IP44 rating only protects against splashing; additional sealing may be required in harsh salt‑spray environments
Frames below 400 are sealed‑for‑life, but larger frames need periodic bearing greasing and inspection
Physical footprint can be large for vessels with limited engine‑room space
Requires skilled maintenance for VPI insulation monitoring (megger, PD testing)
Initial capital cost is higher than lower‑rated generators

Typical Vessels: Container shipBulk carrierTankerCruise shipOffshore supply vessel

Decision Guide: Choose if you need a reliable 900 kVA auxiliary power source with robust class‑H insulation, flexible cooling and proven ABB AVR control on medium to large vessels. Avoid if space is at a premium, the installation environment exceeds IP44 exposure, or a lower‑cost, lower‑power generator would meet the vessel’s electrical demand.

Use Cases: Main auxiliary generator for propulsion support, hotel load, and emergency power on merchant ships; shore‑side power generation for offshore platforms; backup generation in cruise liners where high reliability and temperature tolerance are critical.

Manufacturer Datasheet

Datasheet

AMG 0900-440V-60Hz-IP55

· synchronous marine generator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 sealed enclosure protects against salt spray and dust in harsh marine environments
Class‑H vacuum pressure impregnated (VPI) stator/rotor insulation provides excellent thermal endurance and moisture resistance
Dual cooling options (axial fans with optional water‑cooling) allow flexible installation in confined engine rooms
Integrated ABB UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation protection
Proven track record on US‑flagged vessels; complies with IEC 60034‑18‑32 and IEEE 117 standards

Weaknesses

Fixed 440 V output may require step‑up transformers for ships that operate at higher distribution voltages
Physical footprint and weight are relatively large for a 900 kVA unit, impacting engine‑room layout
Requires diligent moisture monitoring of the VPI insulation to avoid degradation in high‑humidity zones
Only rated for 60 Hz operation; not suitable for vessels standardized on 50 Hz systems
Initial capital cost is higher than comparable low‑speed diesel generators

Typical Vessels: Cruise shipsRo‑Ro ferriesOffshore supply vessels (OSV)LNG carriersNaval auxiliary and support ships

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV Class approval for marine generatorsABS classification

Decision Guide: Choose if: you need a high‑reliability 900 kVA generator for US‑flagged or other 60 Hz vessels, require IP55 protection and robust VPI insulation, and have space for the unit’s footprint. Avoid if: your vessel operates on a 50 Hz power system, demands a lower voltage output without additional transformers, or has severe weight/space constraints that favour compact low‑speed diesel generators.

Use Cases: The AMG 0900‑440V is typically installed as the main auxiliary generator on large passenger ferries and offshore support vessels where continuous, clean electrical power is critical for hotel loads, navigation systems, and cargo handling equipment. It also serves as a standby generator on LNG carriers that need rapid start‑up and high fault tolerance in corrosive sea‑water environments.

Manufacturer Datasheet

Datasheet

AMG 0900-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density in a compact LV frame (400–630) suitable for medium‑size vessels
Class H VPI insulation provides excellent moisture and thermal resistance for harsh marine environments
Integrated UNITROL 1000 series AVR offers precise voltage regulation and built‑in under/over‑excitation protection
Dual cooling options (air‑only or air/water) allow flexible installation in confined engine rooms
ABB global service network and proven field history reduce life‑cycle risk

Weaknesses

IP23 enclosure only protects against splash; not dust‑tight, limiting placement in very dusty compartments
Fixed 50 Hz frequency – a separate unit is required for vessels operating on 60 Hz or dual‑frequency systems
Bearing lubrication may be non‑sealed (frame ≥450) requiring periodic greasing and inspection
Maximum voltage limited to 690 V LV; higher‑voltage busbars need step‑up transformers, adding cost and space
Size and weight typical of frame 400–630 can be substantial for small craft or retrofits

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer ships (mid‑size)Ro‑Ro / Passenger ferries

Certifications: DNV GLABS

Decision Guide: Choose if you need a reliable 900 kVA low‑voltage generator with robust moisture‑resistant insulation, integrated AVR and worldwide ABB support for medium‑size commercial vessels. Avoid if the installation requires dust‑tight (IP54+) protection, dual‑frequency operation, or a higher voltage class without additional step‑up equipment.

Use Cases: Main auxiliary power generation for hotel loads, emergency power supply, and secondary propulsion support on cruise ships, ferries and offshore supply vessels where space is limited but high reliability is mandatory.

Manufacturer Datasheet

Datasheet

AMG 0900-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (900 kVA) in a compact LV frame suitable for most auxiliary plant layouts.
Robust VPI vacuum pressure impregnated stator/rotor insulation (Class H) gives excellent thermal and moisture resistance.
Flexible cooling options – dual axial fans with optional water‑cooling – allow operation from -20 °C to +45 °C.
Integrated ABB UNITROL AVR series provides precise voltage regulation and built‑in under/over‑excitation limits.
Standard marine enclosure (IP44) and compliance with IEC 60034‑18‑32 and IEEE 117‑1974 for long‑term reliability.

Weaknesses

Relatively large footprint and weight compared with newer high‑speed generator designs, limiting installation in space‑constrained vessels.
Output voltage limited to 690 V; higher shipboard voltages require additional step‑up transformers.
IP44 rating protects against splashing water only – not suitable for areas exposed to direct jet spray or immersion.
Maintenance intensive bearings and cooling fans demand regular inspection in harsh salt‑water environments.
Initial capital cost is higher than basic low‑power generators of comparable kVA.

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierOffshore supply vesselCruise liner

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven 900 kVA auxiliary generator with strong insulation, flexible cooling and ABB AVR integration for vessels that already use ABB electrical systems. Avoid if vessel space is at a premium, higher voltage output is required without transformers, or budget constraints favor lower‑cost alternatives.

Use Cases: Typically installed as the main auxiliary power source on large commercial ships to supply hotel loads, cargo handling equipment and emergency power; also used in offshore support vessels where robust, low‑maintenance generation is critical.

Manufacturer Datasheet

Datasheet

AMG 0900-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (900 kVA) in a compact frame suitable for LV marine applications
Robust IP55 enclosure and Class H VPI insulation provide excellent resistance to salt‑water corrosion and thermal ageing
Flexible cooling options (dual axial fans or water‑cooled) allow operation from –20 °C to +45 °C at altitudes up to 1000 m
Integrated UNITROL/GEN AVR series delivers precise voltage regulation with under/over‑excitation protection
Sealed‑for‑life bearing option (frames <400) reduces routine lubrication maintenance

Weaknesses

Requires regular insulation resistance and partial‑discharge testing to detect moisture ingress in the VPI system
Physical footprint and weight are larger than low‑power diesel generators, limiting installation on space‑constrained vessels
Initial capital cost is higher than comparable medium‑speed diesel sets of similar rating
Maintenance personnel must be trained on ABB-specific AVR units and bearing inspection procedures
Operating voltage limited to 690 V; ships with lower bus voltages need additional step‑up transformers

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierCruise linerOffshore supply vesselNaval auxiliary ship

Certifications: DNV GL Type ApprovalABS Approved Marine GeneratorIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 900 kVA auxiliary power source with strong corrosion resistance, flexible cooling and integrated AVR for large merchant or offshore vessels. Avoid if the vessel has strict space or weight limits, operates on a lower voltage bus system, or cannot support the scheduled insulation‑testing regime required for VPI‑type generators.

Use Cases: Typically installed as the main auxiliary generator on large tankers, container ships and cruise liners to supply shipboard electrical loads and emergency power. Also used in offshore platforms and naval auxiliaries where high reliability and resistance to harsh marine environments are critical.

Manufacturer Datasheet

Datasheet

AMG 0900-690V-60Hz-IP23

· synchronous marine generator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (900 kVA) in a compact LV frame suitable for many ship classes
VPI (vacuum pressure impregnation) Class H insulation provides excellent moisture resistance and long life
Dual‑mode cooling (axial fans with optional water spray) allows operation from –20 °C to +45 °C and up to 1000 m altitude
Integrated UNITROL/GEN AVR options give precise voltage regulation and built‑in under/over‑excitation protection
Meets IEC 60034‑18‑32 and IEEE Std 117, facilitating classification approval (IMO D‑2, DNV, ABS)

Weaknesses

IP23 enclosure only protects against dripping water; additional sealing required for harsh spray environments
Frames ≥450 require greasable bearings, increasing maintenance effort compared with sealed‑for‑life units
Large physical footprint and weight may limit installation on smaller vessels or retrofits
Cooling fans are prone to salt fouling and need regular inspection in marine service
Complex wiring and AVR integration demand skilled technicians for commissioning and troubleshooting

Typical Vessels: Container shipBulk carrierTanker (crude, product)Cruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: IMO Type Approval (D‑2)DNV GLABSIEC 60034‑18‑32IEEE Std 117‑1974

Decision Guide: Choose if: you need a reliable 900 kVA auxiliary generator with robust insulation, flexible cooling options and integrated AVR for large merchant or offshore vessels; you have the space for an LV frame and can perform regular bearing greasing where required. Avoid if: the installation area demands higher ingress protection (e.g., IP55), weight/space constraints are critical, or you prefer a fully sealed‑for‑life unit with minimal maintenance.

Use Cases: Typically installed as the main auxiliary generator on large commercial ships to supply hotel loads, cargo handling equipment and emergency power; also used in offshore platforms and as shore‑power generators where high reliability and compliance with classification societies are mandatory.

Manufacturer Datasheet

Datasheet

AMG 0900-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) insulation class H provides high thermal endurance in marine conditions
IP44 enclosure resists salt spray and moisture, suitable for deck‑mounted installations
Integrated UNITROL AVR offers precise voltage regulation and built‑in under/over‑excitation limits
Dual cooling options (air‑only or air/water) allow adaptation to vessel HVAC layouts
Proven ABB service network and condition monitoring (LEAP) simplify lifecycle management

Weaknesses

Physical size and weight are significant; requires dedicated machinery space and heavy foundations
Bearings may be sealed‑for‑life only on lower frames, requiring periodic greasing on larger frames
Initial capital cost is higher than comparable low‑cost diesel gensets
Maintenance demands skilled personnel for insulation testing and AVR servicing
Limited to 690 V output; vessels standardising on higher medium‑voltage levels may need step‑up transformers

Typical Vessels: Container shipBulk carrierProduct tankerCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: DNV GL Type ApprovalABS Marine CertificationIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 900 kVA auxiliary power source with proven marine‑grade protection, integrated AVR and flexible cooling on vessels that already use ABB electrical systems. Avoid if space or weight constraints dominate, if the vessel operates on a higher medium‑voltage platform, or if budget limits preclude premium‑class generators.

Use Cases: Typically installed as an auxiliary generator for main ship service power, emergency power supply, and as part of a multi‑generator set for dynamic positioning or shore‑power conversion on large commercial vessels.

Manufacturer Datasheet

Datasheet

AMG 0900-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (900 kVA) in a compact LV frame suitable for medium‑size ships
Robust IP55 protection against dust and water spray, ideal for corrosive sea environments
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Dual cooling options (air‑only or air/water) allow flexible installation on vessels with limited space
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Large physical footprint and weight compared with newer compact generator technologies
Requires regular moisture‑related insulation testing (Megger, PD) to maintain Class H performance
Standard cooling relies on axial fans; high ambient temperatures may demand additional water‑cooling retrofit
No built‑in redundancy; a single unit failure impacts auxiliary power unless paired with another set
Maintenance personnel must be trained on ABB-specific VPI and AVR systems

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven 900 kVA auxiliary generator with strong environmental protection, flexible cooling and ABB's reputable AVR control. Avoid if vessel weight or space is at a premium, if higher voltage (≥13.8 kV) is required, or if you prefer an integrated redundant power package.

Use Cases: The AMG 0900-690V-60Hz-IP55 is typically installed as the main auxiliary generator on medium‑to‑large commercial vessels, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. It is also used in offshore support ships where exposure to salt spray and high humidity demands an IP55‑rated unit.

Manufacturer Datasheet

Datasheet

AMG 1000-400V-50Hz-IP23

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1000 kVA) suitable for large vessel auxiliaries
H‑class VPI insulated windings provide excellent moisture and thermal resistance
Integrated UNITROL AVR system with UEL/OEL limits ensures stable voltage regulation
Dual cooling options (air‑axial fans or water‑cooled) adapt to varied climate conditions
Modular frame sizes (400–630 kVA range) simplify installation and future upgrades

Weaknesses

IP23 rating only protects against splash; not suitable for heavily contaminated or dusty compartments
Large physical footprint and weight require substantial deck space and structural support
Maintenance intensive – regular insulation resistance, bearing temperature and vibration checks are mandatory
Water‑cooled variant adds complexity (pumps, heat exchangers) and potential leak points
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 1 MVA auxiliary power source with robust H‑class insulation and integrated AVR for large ocean‑going vessels. Avoid if deck space is limited, a higher ingress protection rating (e.g., IP55) is required, or low‑maintenance solutions are preferred.

Use Cases: Commonly installed in the main auxiliary power plant of large commercial ships to supply ship service power, emergency generators, and propulsion auxiliaries such as thrusters, winches, and HVAC systems. Often paired with diesel engines in a genset configuration for redundancy.

Manufacturer Datasheet

Datasheet

AMG 1000-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class‑H vacuum pressure impregnation (VPI) insulation provides excellent moisture resistance and long life.
Integrated UNITROL AVR series offers precise voltage regulation with under/over‑excitation protection.
Dual cooling options (axial fans + optional water‑cooling) allow operation in a wide ambient temperature range (-20 °C to +45 °C).
Sealed‑for‑life bearing design reduces routine maintenance intervals.
IP44 rating protects against splashing water and salt spray, suitable for harsh marine environments.

Weaknesses

Large frame size (400–630 mm) results in a significant footprint and weight, limiting installation on space‑constrained vessels.
High initial capital cost compared with lower‑rated generators or diesel sets of similar power.
Requires regular insulation resistance testing to monitor moisture ingress, adding inspection workload.
Complex cooling system may need additional filtration and periodic cleaning in salt‑laden air.
Standard 400 V output may require step‑up transformers for vessels that operate on higher bus voltages.

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: IMO Type Approval (MSC.267(84))DNV GL ClassificationABS Class

Decision Guide: Choose if: you need a robust 1 MVA auxiliary generator with high insulation class, integrated AVR and dual‑mode cooling for large commercial vessels operating in harsh marine climates. Avoid if: vessel space or weight limits are critical, power demand is below 500 kVA, or budget constraints favor smaller diesel generators.

Use Cases: Typically installed as the main auxiliary generator on large merchant ships to supply shipboard electrical loads, emergency power, and support for dynamic positioning systems where additional redundancy is required. Also used in cruise ships and offshore vessels that demand high reliability and resistance to salt‑water corrosion.

Manufacturer Datasheet

Datasheet

AMG 1000-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure provides excellent protection against salt spray and dust.
Class H VPI insulation offers high thermal endurance and long service life in harsh marine climates.
Dual axial fans with optional water‑cooling give flexible cooling options for a wide ambient temperature range (-20 °C to +45 °C).
Integrated ABB UNITROL AVR (1000 series) delivers precise voltage regulation and built‑in under/over‑excitation protection.
Compatibility with ABB Ability LEAP condition‑monitoring platform enables predictive maintenance.

Weaknesses

Physical footprint and weight are large compared to compact diesel‑engine generators of similar rating.
Frames ≥450 kW require re‑greasable bearings, increasing routine maintenance effort.
Standard model is limited to 50 Hz; a separate version is needed for 60 Hz applications.
Initial capital cost is higher than many conventional marine alternators.
Requires strict moisture control during insulation testing to meet Class H criteria.

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Certifications: DNV GL Marine ClassificationABS (American Bureau of Shipping)LR (Lloyd's Register)IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a high‑power (≈1 MVA) auxiliary generator with proven durability in corrosive sea environments, integrated AVR and condition‑monitoring capability, and you have sufficient engine room space. Avoid if vessel size limits installation volume, you require 60 Hz output without a separate model, or you prefer lower upfront cost and minimal bearing maintenance.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels to supply shipboard hotel loads, cargo handling equipment, and emergency power; also used in dynamic positioning systems where stable voltage and rapid response are critical.

Manufacturer Datasheet

Datasheet

AMG 1000-400V-60Hz-IP23

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1000 kVA at 400 V suitable for large hotel loads
Robust VPI (vacuum pressure impregnation) insulation system, Class H, offering excellent moisture resistance
Dual axial‑fan cooling provides flexible air or water cooling options for varied operating climates
Integrated ABB UNITROL AVR series enables precise voltage regulation and built‑in under/over‑excitation protection
Proven ABB reliability with extensive global service network

Weaknesses

IP23 rating limits protection against direct water ingress; not suitable for harsh spray zones without additional shielding
Large footprint and weight require dedicated generator room and heavy‑duty foundations
Bearing lubrication may be greased (non sealed‑for‑life) on this frame size, requiring periodic maintenance
Initial capital cost is higher than many generic offshore generators
Requires specialized ABB‑trained personnel for AVR tuning and condition monitoring

Typical Vessels: Very Large Crude Carrier (VLCC)Ultra‑Large Container Ship (ULCS)Cruise linerLNG carrierOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a proven 1 MVA synchronous generator with ABB’s integrated AVR, robust Class H insulation and flexible cooling for large vessels that can accommodate an IP23 enclosure. Avoid if space is limited, higher ingress protection (IP55+) is required, or budget constraints preclude the premium cost of an ABB system.

Use Cases: Main auxiliary power plant on large tankers and container ships, hotel‑load generation on cruise vessels, emergency standby generator for critical ship systems, and power supply for cargo handling equipment on offshore platforms.

Manufacturer Datasheet

Datasheet

AMG 1000-400V-60Hz-IP44

· low‑voltage synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1000 kVA) in a compact LV frame suitable for large auxiliary power plants
Class‑H insulation and IP44 enclosure provide strong resistance to heat, moisture and salt spray
Integrated ABB UNITROL AVR options give precise voltage regulation and built‑in over/under‑excitation protection
Flexibility of air‑ or water‑cooled configurations allows adaptation to vessel cooling schemes
ABB global service network and proven track record in marine applications

Weaknesses

IP44 protects only against splashing water; not fully sealed for sub‑mersion or heavy spray zones
Physical size and weight require dedicated generator room and reinforced foundations
Insulation health must be monitored regularly (megger, PD) due to marine humidity and salt exposure
Higher initial capital cost compared with smaller modular generators
Requires skilled personnel for VPI‑based winding inspection and bearing maintenance

Typical Vessels: Container ships (>10 000 TEU)Cruise linersLNG carriersProduct tankersOffshore supply vesselsRo‑Ro ferries with high hotel load

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV class approval for marine generators

Decision Guide: Choose if you need a reliable 1 MVA LV generator with strong temperature and moisture resistance, integrated ABB AVR control, and the flexibility of air or water cooling for large auxiliary power plants. Avoid if space is severely limited, a higher voltage output is required without step‑up transformation, or budget constraints preclude the premium cost of an ABB high‑spec unit.

Use Cases: Provides main auxiliary power for propulsion support, hotel services and emergency generation on large commercial vessels; commonly installed in dedicated generator rooms to supply shipboard electrical distribution, dynamic positioning systems, and offshore platform power links.

Manufacturer Datasheet

Datasheet

AMG 1000-400V-60Hz-IP55

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density – 1000 kVA in a single frame suitable for large auxiliary loads
IP55 sealed enclosure protects against spray and dust in harsh sea conditions
Class‑H VPI insulated windings give excellent thermal endurance up to +180 °C
Dual axial fans provide flexible air or water cooling options
Integrated ABB UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

Large physical footprint and weight may limit installation on space‑constrained vessels
Standard bearing design (non‑sealed) requires periodic greasing and condition monitoring
Fixed 400 V output may need step‑up transformers for ships that operate at higher bus voltages
Advanced AVR units increase initial cost and require specialised spares
Maintenance of VPI insulated windings demands strict moisture control during inspections

Typical Vessels: Crude oil tankerLNG carrierContainer ship (>8,000 TEU)Cruise linerOffshore supply vesselNaval auxiliary / support ship

Decision Guide: Choose this generator when you need a proven 1 MVA source with marine‑grade protection (IP55, Class‑H) and integrated AVR for reliable hotel‑load or DP support. Avoid it on vessels where space, weight or a higher bus voltage (>400 V) are critical constraints, or where a fully sealed bearing system is required.

Use Cases: Typically installed as the main auxiliary generator on large tankers, LNG carriers and cruise ships to supply propulsion auxiliaries, hotel services, cargo handling equipment and emergency power. Also used on offshore support vessels for dynamic positioning and high‑power shore‑side connections.

Manufacturer Datasheet

Datasheet

AMG 1000-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (1000 kVA) in a single unit reduces the need for multiple generators.
Class H VPI‑insulated windings provide excellent thermal endurance and moisture resistance.
Integrated UNITROL AVR system offers precise voltage regulation and built‑in under/over‑excitation limits.
Dual cooling options (air‑flow or water‑cooled) allow adaptation to varied ambient conditions.
Sealed‑for‑life bearings on frames <400 simplify maintenance and improve reliability.

Weaknesses

IP23 rating protects against splashing water only; not suitable for heavily spray‑prone locations without additional shielding.
Physical size and weight require dedicated generator room space and robust mounting structures.
Voltage output (440 V) may need step‑up transformation for vessels operating on higher bus voltages.
Maintenance of VPI‑insulated windings demands specialized testing equipment (Megger, PD analysis).
Cooling performance can be limited in very high ambient temperatures (>45 °C) without supplemental water cooling.

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vessel

Certifications: DNVABS

Decision Guide: Choose if: you need a robust 1 MVA auxiliary generator for vessels with 400‑690 V distribution, require high thermal endurance and integrated AVR, and have space for a standard‑size marine generator room. Avoid if: the vessel operates on higher voltage busbars (>6 kV), has severe spray exposure beyond IP23 protection, or demands a compact, low‑weight unit.

Use Cases: Typically installed as the main auxiliary power source on large merchant ships and cruise vessels, providing electricity for hotel loads, cargo handling equipment, and emergency systems. Also used as standby generators on offshore support platforms where reliable voltage regulation and high temperature tolerance are critical.

Manufacturer Datasheet

Datasheet

AMG 1000-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1000 kVA suitable for large vessel hotel loads.
Robust IP44 sealed enclosure and Class H insulation resist moisture, salt spray and high temperatures.
Dual axial fans with optional water‑cooling provide flexible thermal management from –20 °C to +45 °C.
Integrated UNITROL AVR (1000 series) delivers precise voltage regulation and built‑in under/over‑excitation protection.
Sealed‑for‑life bearing option for frames ≤400 reduces routine lubrication maintenance.

Weaknesses

Large physical footprint requires a dedicated generator room, limiting suitability for space‑constrained vessels.
IP44 rating only protects against splashing water; additional shielding is needed in heavy spray zones.
Frames ≥450 use greasable bearings, increasing periodic maintenance effort.
Marine humidity demands regular insulation monitoring (megger, partial discharge tests).
Higher upfront capital cost and ABB service contracts compared with some competing brands.

Typical Vessels: Container shipBulk carrierCrude oil tankerLNG/LPG carrierCruise linerOffshore supply vessel

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose this generator when you need a reliable 1 MW service power source, have sufficient space for an IP44 unit, and value ABB's integrated AVR and condition‑monitoring tools. Avoid it on vessels with very limited engine‑room volume, where higher ingress protection (IP55+) or lower acquisition cost is the primary driver.

Use Cases: Primary ship service power generation for hotel loads, emergency/auxiliary power supply, and support of propulsion auxiliaries on large commercial and offshore vessels. Often installed alongside diesel engines in a dedicated generator room with provisions for both air‑ and water‑cooled operation.

Manufacturer Datasheet

Datasheet

AMG 1000-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density (1000 kVA) suitable for large auxiliary power plants on ocean-going vessels.
IP55 sealed enclosure protects against salt spray, dust and water ingress, extending service intervals.
Class‑H VPI vacuum pressure impregnation insulation provides excellent thermal endurance and moisture resistance.
Dual axial fan cooling allows flexible air or water‑cooled operation across a wide ambient temperature range (-20 °C to +45 °C).
Integrated UNITROL AVR series offers precise voltage regulation with under/over‑excitation protection.

Weaknesses

Physical size and weight are substantial; installation requires ample engine‑room space and heavy‑duty foundations.
Four‑pole design limits rotational speed to ~1500 rpm, which may be incompatible with high‑speed prime‑movers without a gearbox.
Maintenance of sealed bearings (especially on larger frames) can be more demanding than open‑type bearings.
Requires regular insulation resistance testing (Megger) and partial‑discharge monitoring to detect moisture ingress.
Initial capital cost is higher than lower‑rated generators or alternative diesel‑alternator sets.

Typical Vessels: Cruise shipsContainer vesselsLNG carriersOffshore supply vessels (OSV)FPSOs and semi‑submersibles

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if: you need a robust 1 MVA auxiliary power source with IP55 protection, class‑H insulation and flexible cooling for large passenger or cargo vessels operating in severe marine climates. Avoid if: space, weight or budget constraints dominate, or the vessel uses high‑speed prime movers that cannot accommodate a 4‑pole generator without additional gearing.

Use Cases: The AMG 1000 is typically installed as part of an auxiliary power plant on cruise liners for hotel load, on container ships to support cargo handling equipment and shore‑power conversion, and on offshore platforms where reliable, high‑capacity electricity is required for DP systems and process loads.

Manufacturer Datasheet

Datasheet

AMG 1000-440V-60Hz-IP23

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1 MVA) in a compact LV frame suitable for most merchant vessels
Class‑H VPI insulated windings provide excellent moisture resistance and long service life
Dual axial fan cooling allows flexible air or water cooling to match climate conditions
ABB global support network and proven field experience on large tankers and cruise ships
Integrated UNITROL AVR series offers precise voltage regulation with UEL/OEL protection

Weaknesses

IP23 enclosure only protects against splash; not suitable for exposed deck locations in heavy spray environments
Requires regular bearing lubrication (sealed‑for‑life only on frames <400), adding maintenance workload
Fixed 440 V output may need additional transformers to match vessel bus voltages of 415 V or 690 V
Physical size and weight are significant; installation space must be allocated in engine room
Cooling performance can be limited in very high ambient temperatures (>45 °C) without water‑cooling option

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL classification approval for auxiliary generators

Decision Guide: Choose if you need a reliable 1 MVA shipboard generator with robust Class‑H insulation, dual fan cooling options and ABB’s worldwide service support. Avoid if the installation area is exposed to heavy sea spray (requires higher IP rating), if space or weight constraints are critical, or if a fully sealed‑for‑life bearing design is mandatory.

Use Cases: The AMG 1000-440V-60Hz-IP23 is typically installed as the main auxiliary generator on large merchant vessels to supply hotel loads, cargo handling equipment and emergency power. It is also used in offshore platforms and cruise ships where high reliability and flexible cooling are required, and can serve as a standby unit for shore‑power conversion plants.

Manufacturer Datasheet

Datasheet

AMG 1000-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust VPI (vacuum pressure impregnation) insulation class H provides high thermal endurance in harsh marine environments
Dual axial‑fan air cooling can be complemented by optional water cooling, allowing operation from –20 °C to +45 °C
IP44 enclosure offers protection against splashing water and dust while still permitting easy deck installation
ABB global service network and proven ABB Ability condition monitoring tools simplify maintenance and diagnostics
Standardised bearing designs (sealed‑for‑life or greasable) reduce downtime during overhauls

Weaknesses

IP44 rating is not fully dust‑tight; additional sealing may be required for very harsh spray zones
Physical footprint and weight are significant for a 1 MVA unit, limiting installation in space‑constrained vessels
Requires regular bearing inspection (greasable frames) unless the sealed‑for‑life option is selected
Only 60 Hz version; vessels operating on 50 Hz would need a different model
Cooling performance can be marginal in tropical ambient temperatures above 35 °C without supplemental water cooling

Typical Vessels: Cruise shipContainer vesselTankerOffshore supply vesselFerry

Certifications: DNV GL approvalABS classificationLloyd's Register (LR) approvalIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 1 MVA auxiliary generator with strong insulation, dual cooling options and worldwide ABB support for cruise ships, tankers or offshore vessels. Avoid if deck space is extremely limited, a higher IP rating (e.g., IP65) is mandatory, or the vessel operates on 50 Hz only.

Use Cases: Typically installed as main‑auxiliary power source for hotel loads, emergency power generation, and propulsion support on large passenger ships, container carriers and offshore supply vessels. Frequently paired with ABB’s UNITROL AVR system and integrated into shipboard energy management platforms such as ABB Ability.

Manufacturer Datasheet

Datasheet

AMG 1000-440V-60Hz-IP55

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1 MVA) suitable for large vessel hotel loads or emergency power
IP55 protection and Class‑H insulation give excellent resistance to moisture, salt spray and high temperatures
Dual axial‑fan cooling with optional water‑cooling provides flexible thermal management up to +45 °C ambient
Integrated UNITROL AVR (1000 series) offers precise voltage regulation and built‑in under/over‑excitation limits
Designed to IEC 60034‑18‑32 and IEEE Std 117‑1974 standards; widely accepted by classification societies

Weaknesses

Large physical footprint and weight require substantial engine room space (exact dimensions not disclosed)
Requires regular insulation resistance, tan‑delta and bearing temperature monitoring in marine service
Frames below 400 need sealed‑for‑life bearings; larger frames still need periodic greasing and re‑inspection
Complex commissioning checklist; mis‑tightened fasteners or corroded connections can lead to early failures
Higher upfront cost compared with lower‑rated generators or diesel sets of similar power

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierCruise linerOffshore supply vesselNaval auxiliary ship

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL approvalABS classification

Decision Guide: Choose if you need a robust 1 MVA generator with proven IP55 protection, Class‑H insulation and flexible cooling for large commercial or offshore vessels. Avoid if space, weight or budget constraints favour smaller rating units, or if you prefer an integrated engine‑generator set rather than a separate alternator.

Use Cases: Typically installed as the main auxiliary power source on large tankers, container ships and cruise vessels, providing hotel load and emergency power; also used on offshore platforms and naval support ships where high reliability in salty, humid environments is mandatory.

Manufacturer Datasheet

Datasheet

AMG 1000-690V-50Hz-IP23

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1 MVA) at standard 690 V medium voltage simplifies integration with ship electrical systems.
Class‑H VPI insulated windings provide excellent thermal endurance and moisture resistance for marine environments.
Integrated UNITROL 1000 AVR offers automatic voltage regulation with under/over‑excitation limiters.
Dual cooling options (axial fans or water‑cooled) allow flexible installation in varied engine rooms.
Sealed‑for‑life bearings on frames <400 reduce routine lubrication maintenance.

Weaknesses

IP23 rating protects only against spray; additional shielding may be required in heavily splashed areas.
Physical size and weight are substantial, limiting suitability for small vessels or tight engine‑room spaces.
Moisture ingress can still affect insulation over time; regular IR and partial‑discharge testing is mandatory.
Cooling performance depends on unobstructed airflow; fouling of fans can lead to overheating.
Higher initial cost compared with lower‑rated generators from some competitors.

Typical Vessels: Container shipBulk carrierCrude oil tankerProduct tankerCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: IEC 60034-18-32IEEE Std 117‑1974

Decision Guide: Choose if you need a robust 1 MVA medium‑voltage generator with built‑in AVR, Class‑H insulation and flexible cooling for a mid‑size to large commercial vessel. Avoid if space, weight or a higher ingress protection rating (e.g., IP55) are critical, or if the operating profile demands very low maintenance without periodic insulation testing.

Use Cases: Typically installed as main auxiliary power source on ocean‑going cargo vessels and cruise ships, providing hotel load, emergency power and support for dynamic positioning systems. Also used in offshore platforms where reliable medium‑voltage generation is required.

Manufacturer Datasheet

Datasheet

AMG 1000-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (1000 kVA) suitable for large ship service loads
Class H insulation and VPI construction provide excellent thermal endurance
Dual axial fans with optional water‑cooling give flexible cooling in hot or humid climates
IP44 enclosure protects against splashing water and dust, allowing deck‑mount installations
Modular frame sizes (400‑630) simplify installation and future upgrades

Weaknesses

IP44 is not fully sealed; additional shielding may be required in heavy spray zones
Large footprint and weight demand significant space and structural support
Moisture‑sensitive insulation requires regular IR testing and condition monitoring
AVR (UNITROL 1000/GEN) units need extra corrosion protection, increasing maintenance effort
Bearing options (sealed‑for‑life vs greasable) can limit retrofit flexibility

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Decision Guide: Choose this generator when a high‑capacity, thermally robust unit is needed for vessels with ample engine room space and where flexible cooling (air or water) is advantageous. Avoid it on smaller ships with limited installation volume, in extremely corrosive spray zones without additional protection, or where low‑maintenance sealed units are a priority.

Use Cases: Commonly installed as the main auxiliary power source on large commercial vessels—providing hotel load, cargo handling equipment, and emergency power. Also used on offshore support ships that require reliable, high‑output generation in varied climatic conditions.

Manufacturer Datasheet

Datasheet

AMG 1000-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 housing protects against dust and water spray in harsh marine environments
Class H vacuum pressure impregnated (VPI) stator and rotor provide excellent insulation life and moisture resistance
Integrated UNITROL AVR offers precise voltage regulation with under/over‑excitation limits
Dual axial fan cooling allows flexible air or water cooling for a wide ambient temperature range
Sealed‑for‑life bearings on frames <400 reduce maintenance intervals

Weaknesses

Large physical footprint and weight may limit installation in space‑constrained vessels
Requires regular insulation testing (Megger, tan‑delta) to monitor moisture ingress
Cooling performance depends on clean airflow; fouled fans can cause overheating
Higher initial capital cost compared with conventional diesel‑engine gensets of similar rating
Maintenance of VPI system and AVR demands specialised training

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vesselNaval auxiliary

Certifications: DNV GLABSLloyd's Register

Decision Guide: Choose if you need a high‑power (≈1 MVA) auxiliary generator with proven marine‑grade durability, integrated AVR and flexible cooling for vessels operating in corrosive or humid conditions. Avoid if vessel space/weight budgets are tight, if you prefer a simpler diesel engine genset, or if the operational profile cannot support regular insulation monitoring.

Use Cases: Typically installed as the main auxiliary generator on large merchant ships to supply hotel loads and emergency power; also used in hybrid propulsion schemes where stable synchronous output is required, and on offshore platforms for continuous shore‑power generation.

Manufacturer Datasheet

Datasheet

AMG 1000-690V-60Hz-IP23

· Four‑pole synchronous marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1000 kVA in a compact LV frame (400–630) suitable for most auxiliary power plants.
Class H VPI insulated windings provide excellent thermal endurance and moisture resistance for harsh sea conditions.
Dual cooling options (axial fans with optional water‑cooling) allow flexible installation on deck or in engine rooms.
Integrated ABB UNITROL AVR series offers precise voltage regulation, under/over‑excitation limiting and remote monitoring via ABB Ability.
Proven ABB service network and extensive documentation simplify commissioning and lifecycle maintenance.

Weaknesses

IP23 rating protects against splashing only; not suitable for dusty or fully sealed compartments without additional shielding.
Large physical footprint and weight require dedicated space and heavy‑duty foundations.
Bearing lubrication is either sealed‑for‑life (frame <400) or requires periodic greasing, adding maintenance effort on larger frames.
Requires 690 V bus system; not directly compatible with higher‑voltage (>11 kV) shipboard distribution without step‑down gear.
Advanced AVR options increase initial cost and may need specialized spares.

Typical Vessels: Crude oil tankerContainer vesselBulk carrierCruise shipOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose this generator when a reliable 1 MVA auxiliary power source with high thermal rating and flexible cooling is required on vessels that can accommodate its size and IP23 enclosure. Avoid it for installations where space is extremely limited, a dust‑tight (IP54+) enclosure is mandatory, or the ship’s electrical system operates at higher voltages than 690 V.

Use Cases: Typically installed as part of the main auxiliary power plant on large commercial ships to supply hotel loads, cargo handling equipment, and emergency generators. Also used in dynamic positioning systems where stable voltage regulation under varying load is critical.

Manufacturer Datasheet

Datasheet

AMG 1000-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1 MVA suitable for large vessels
Class H insulation and VPI vacuum pressure impregnation provide excellent thermal endurance
Dual axial fans allow flexible air‑ or water‑cooled operation in a wide ambient range (-20 °C to +45 °C)
IP44 enclosure offers protection against splashing saltwater while still allowing easy access for maintenance
Integrated UNITROL AVR series delivers precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

Large physical footprint and weight require substantial engine‑room space and robust mounting structures
IP44 rating is not fully sealed against heavy spray or immersion, limiting use in extreme wash‑down zones
Maintenance of VPI‑impregnated windings demands specialized testing (megger, tan‑delta) and skilled personnel
Four‑pole design limits rotational speed options; may require a dedicated drive system to match ship engine RPM
Initial capital cost is higher than comparable low‑voltage diesel generators

Typical Vessels: Container shipsCrude oil tankersLNG carriersCruise linersOffshore supply vessels (OSV)FPSOs

Decision Guide: Choose if: you need a reliable 1 MVA shipboard power source, have sufficient engine‑room space, and require robust thermal performance with flexible cooling. Avoid if: the installation area is constrained, you need a fully sealed (IP66+) generator for heavy spray zones, or you lack access to specialized winding‑insulation testing facilities.

Use Cases: The AMG 1000-690V-60Hz-IP44 is typically installed as the main auxiliary power plant on large commercial vessels where a stable 690 V three‑phase supply powers propulsion auxiliaries, hotel loads, and cargo handling equipment. Its dual‑fan cooling makes it adaptable for both tropical and temperate climates, while the integrated AVR ensures voltage stability during load transients common in port operations.

Manufacturer Datasheet

Datasheet

AMG 1000-690V-60Hz-IP55

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure resists salt spray and dust, suitable for harsh offshore environments
Class H VPI‑impregnated windings provide excellent thermal endurance up to +180 °C
Integrated UNITROL 1000 AVR offers built‑in voltage regulation, under/over‑excitation protection and load sharing
Dual cooling options (axial fans with optional water‑cooling) allow flexible installation on deck or in engine rooms
Standardised dimensions (frame 400–630) fit common marine generator bays

Weaknesses

Large physical footprint and weight require dedicated space and heavy‑duty foundations
Maintenance of sealed bearings and VPI insulation demands specialised tools and trained personnel
Fixed 690 V output may need step‑up transformers for vessels that operate on higher bus voltages
Higher initial capital cost compared with lower‑rated generators
Sensitivity to moisture ingress if seals are not regularly inspected

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vesselsLNG carriers

Decision Guide: Choose if: you need a reliable 1 MVA auxiliary generator with robust environmental protection, integrated AVR and the ability to operate continuously at high temperatures on medium‑to‑large commercial vessels. Avoid if: space is severely limited, the vessel uses a lower voltage bus system that cannot accommodate 690 V without additional conversion equipment, or you require a low‑cost solution for small craft.

Use Cases: Typically installed as a prime or standby auxiliary power source in the main engine room of tankers, container ships and cruise vessels, supplying shipboard hotel loads, cargo handling equipment and emergency systems. Also used on offshore supply vessels where dual cooling (air/water) is advantageous for hot climates.

Manufacturer Datasheet

Datasheet

AMG 1120-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1120 kVA) in a compact LV frame (400‑630) suitable for large auxiliary plants
VPI vacuum pressure impregnation, Class H insulation provides excellent thermal endurance and moisture resistance
Sealed‑for‑life or greasable bearing options reduce maintenance intervals
Dual axial fans with optional water cooling give flexible temperature control in tropical or high‑load conditions
Integrated ABB UNITROL/GEN AVR families enable precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

IP23 enclosure offers limited protection against heavy spray or immersion; extra sealing may be required for extreme weather
Physical size and weight of a frame‑400 unit can limit installation in vessels with tight machinery spaces
Double‑fan arrangement can generate higher acoustic noise compared with single‑fan designs
Requires regular insulation resistance and partial‑discharge testing to maintain Class H integrity
Optional water‑cooling system adds complexity, piping, and potential corrosion points

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: DNV GLABSIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a robust 1.12 MW auxiliary generator for large commercial vessels, require Class H VPI insulation and flexible cooling options, and have space for a frame‑400 unit. Avoid if the installation area is highly constrained, water ingress protection beyond IP23 is mandatory, or low acoustic noise is a primary requirement.

Use Cases: Typically installed as the main auxiliary generator on tankers, container ships and cruise vessels to supply hotel load, cargo handling equipment and emergency power. Also used as a standby unit on offshore platforms where rapid start‑up and high reliability are essential, often integrated with ABB Ability condition monitoring for predictive maintenance.

Manufacturer Datasheet

Datasheet

AMG 1120-400V-50Hz-IP44

· marine synchronous generator

Power (kVA)

1120

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1120 kVA) in a single LV unit suitable for large vessels
Robust VPI insulation (class H) gives long life in humid, salty environments
Flexible cooling – double‑axial fans with optional water‑cooling for hot climates
Integrated ABB UNITROL/GEN AVR families provide precise voltage regulation and protection functions
Designed to meet IEC 60034‑18‑32 and IEEE 117 standards, facilitating class approvals

Weaknesses

Physical size and weight are substantial; requires dedicated generator room space
IP44 rating protects against splashing water only – not suitable for fully immersed locations
Requires regular fan and bearing inspection to avoid vibration or corrosion issues
Fixed 400 V output may need step‑up transformers on vessels that standardise on higher bus voltages
Higher capital cost compared with smaller diesel gensets of equivalent rating

Typical Vessels: Crude oil tankerLNG carrierContainer ship (large class)Cruise linerOffshore supply vessel / platform support ship

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL Marine Class approvalABS Marine approval

Decision Guide: Choose if you need a high‑capacity, ship‑rated auxiliary generator with proven marine durability, integrated AVR and class‑approved insulation. Avoid if vessel space is limited, the electrical system operates above 400 V without a transformer, or budget constraints favour smaller diesel sets.

Use Cases: Installed as the main service generator on large tankers, cruise ships and offshore support vessels to supply hotel loads, cargo handling equipment and dynamic positioning systems; also used as an emergency power source where redundancy and rapid start‑up are required.

Manufacturer Datasheet

Datasheet

AMG 1120-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1120 kVA) suitable for large ship hotel loads and propulsion auxiliaries
IP55 sealed enclosure provides strong protection against salt spray and dust
Class H insulation and VPI vacuum‑pressure impregnation give excellent thermal endurance in harsh marine climates
Dual axial fans allow flexible air or water cooling configurations
Integrated UNITROL 1000/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

Large physical footprint and weight require ample engine‑room space
Requires regular insulation resistance and partial‑discharge testing to maintain Class H performance in salty environments
Cooling system must be carefully maintained (ventilator cleaning, water‑cooler checks) to avoid overheating
Initial capital cost is higher than lower‑rated generators
Standard rating limited to 400 V/50 Hz; a separate variant needed for 60 Hz applications

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: DNV GL Marine CertificationABS (American Bureau of Shipping) approvalLR (Lloyd's Register) type approvalIEC 60034‑18‑32 complianceIEEE Std 117‑1974 conformity

Decision Guide: Choose if: you need >1 MW auxiliary power, robust protection against marine corrosion, and flexible cooling options on a vessel with sufficient engine‑room space. Avoid if: the installation is size‑constrained, only low‑power generation is required, or a 60 Hz system is mandatory without a dedicated variant.

Use Cases: The AMG 1120 is typically installed as the main auxiliary generator on large commercial vessels to supply hotel services, cargo handling equipment, and propulsion auxiliaries, as well as serving as an emergency power source on offshore platforms where reliability under harsh sea‑water exposure is critical.

Manufacturer Datasheet

Datasheet

AMG 1120-400V-60Hz-IP23

· synchronous marine generator

Power (kVA)

1120

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1120 kVA) suitable for large hotel‑load requirements.
Class H (180 °C) insulation provides extended thermal life and reliability.
Vacuum pressure impregnated (VPI) windings resist moisture ingress and corrosion in marine environments.
Dual axial fans with optional water‑cooling give flexible cooling options for varied operating climates.
ABB UNITROL AVR series offers built‑in UEL/OEL protection and proven voltage regulation.

Weaknesses

IP23 enclosure only protects against large solid objects; not fully splash‑proof, requiring extra sealing in harsh spray zones.
Large physical footprint (frame 400‑630) can limit installation in confined engine rooms.
Non‑sealed bearing designs need periodic lubrication and inspection, increasing maintenance effort.
Separate AVR unit adds integration complexity compared with integrated solutions.
Limited to 400 V systems; not directly compatible with vessels standardising on higher voltages (e.g., 660 V).

Typical Vessels: Very Large Crude Carrier (VLCC)Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary ship

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL Type ApprovalABS ClassificationLloyd's Register approval

Decision Guide: Choose if you need a proven, high‑power (≈1 MW) auxiliary generator for a 400 V system with robust cooling and long‑life insulation. Avoid if space is at a premium, the vessel operates on higher voltage standards, or a fully sealed IP55+ enclosure is mandatory without additional protection.

Use Cases: Typically installed as the main ship service generator on large merchant vessels and offshore platforms, providing hotel power, cargo handling equipment, and emergency backup; also used on cruise ships for extensive passenger‑area loads and on naval auxiliaries where reliability and redundancy are critical.

Manufacturer Datasheet

Datasheet

AMG 1120-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.12 MVA) in a compact frame suitable for large vessels
Class H vacuum‑pressure‑impregnated winding provides excellent thermal endurance
IP44 enclosure offers splash protection and corrosion‑resistant housing for harsh sea environments
Dual cooling options (axial fans + optional water spray) allow flexible installation and load handling
Integrated UNITROL AVR series gives precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

IP44 rating does not protect against dust ingress; additional sealing may be required in very dusty compartments
Large physical size and weight increase installation space and handling requirements
Requires regular insulation resistance testing due to moisture sensitivity of marine environments
Only rated for 60 Hz operation, limiting use on vessels that operate on a 50 Hz grid
Complex AVR system may need specialist support for troubleshooting or firmware updates

Typical Vessels: Container shipCrude oil tankerLiquefied gas carrierCruise linerOffshore supply vessel (OSV)FPSO / offshore platform

Decision Guide: Choose if you need a reliable >1 MVA generator for a large commercial or offshore vessel, require high temperature class insulation and flexible cooling, and have access to ABB service support. Avoid if the installation space is severely limited, the vessel operates on a 50 Hz system, or you prefer a fully dust‑tight (IP66+) enclosure.

Use Cases: Typically installed as the main auxiliary generator on deep‑sea tankers, container ships and cruise vessels where continuous power for propulsion auxiliaries, hotel loads and emergency systems is required. Also used on offshore platforms and FPSOs to supply both shipboard loads and shore‑side export power under harsh marine conditions.

Manufacturer Datasheet

Datasheet

AMG 1120-400V-60Hz-IP55

· synchronous marine generator

Power (kVA)

1120

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1120 kVA) in a single unit reduces the number of generators needed on large vessels.
IP55 enclosure and VPI (vacuum pressure impregnation) insulation class H provide excellent resistance to salt, moisture and high ambient temperatures.
Integrated UNITROL AVR system offers precise voltage regulation with under/over‑excitation protection.
Modular design fits both low‑voltage (LV) and high‑voltage (HV) product lines, allowing flexible installation on new builds or retrofits.
Meets IEC 60034‑18‑32 and IEEE Std 117‑1974 standards for insulation ageing and class‑society certification.

Weaknesses

Physical size and weight are substantial; may be unsuitable for vessels with limited engine‑room space.
Bearings on frames ≥450 require periodic greasing or re‑lubrication, adding maintenance workload.
Cooling performance depends on adequate airflow or water‑cooling circuits; blockage can lead to overheating.
Complex AVR tuning and VPI insulation diagnostics demand specialised engineering support.
Higher upfront capital cost compared with smaller, lower‑rated generators.

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierCruise shipOffshore supply vessel

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a single, high‑capacity generator (≈1 MW) with robust IP55 protection and class‑society approval for large commercial vessels or offshore platforms. Avoid on small craft, yachts or vessels where space, weight or budget constraints preclude a large LV/HV generator set.

Use Cases: Typically installed as the main propulsion‑auxiliary power source on newbuild tankers, container ships and cruise liners, or as a replacement unit during major refits to meet increased load demand or stricter emission standards. Also used for emergency power generation where high reliability under harsh marine conditions is required.

Manufacturer Datasheet

Datasheet

AMG 1120-440V-50Hz-IP23

· Low‑Voltage Synchronous Marine Generator

Power (kVA)

1120

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1 120 kVA suitable for medium‑size vessels
Class‑H VPI insulation provides excellent thermal endurance and moisture resistance
Integrated UNITROL AVR delivers precise voltage regulation and built‑in under/over‑excitation limits
Dual axial fans allow flexible air or water cooling, maintaining performance in hot climates
IP23 enclosure meets typical marine environmental requirements while allowing easy access for maintenance

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for exposed spray zones without additional shielding
Physical size and weight can be restrictive on vessels with tight machinery spaces
Periodic insulation resistance testing is required to monitor moisture‑induced degradation
Larger frame versions require greasable bearings, increasing routine maintenance effort
Higher capital cost compared with smaller auxiliary generators

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: DNVGLABSLloyd's Register (LR)IMO Type Approval (SOLAS)

Decision Guide: Choose if you need a robust >1 MW auxiliary power source for medium‑large vessels, require Class‑H insulation and integrated AVR, and operate in warm climates where flexible air/water cooling is advantageous. Avoid if space is severely limited, a fully watertight (IP66+) enclosure is mandatory, or budget constraints preclude higher‑cost generators.

Use Cases: Commonly installed as the main auxiliary generator on 30 000–80 000 dwt tankers and bulk carriers to supply hotel loads and emergency power; used on large container ships for propulsion support and shore‑power capability; fitted aboard cruise vessels to meet high hotel‑load demand and redundancy requirements.

Manufacturer Datasheet

Datasheet

AMG 1120-440V-50Hz-IP44

· synchronous marine generator

Power (kVA)

1120

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1120 kVA) in a compact LV frame suitable for main‑auxiliary applications
Robust VPI H‑class insulation and IP44 enclosure resist moisture, salt and thermal aging
Flexible cooling options (dual axial fans with optional water‑cooling) for varied climate zones
Sealed‑for‑life or greasable bearing designs minimise routine maintenance intervals
Integrated ABB UNITROL/GEN AVR families provide precise voltage regulation and overload protection

Weaknesses

IP44 rating offers limited dust protection; not suitable for extremely harsh spray zones without additional shielding
Physical size and weight require dedicated generator room and heavy‑duty foundations
Requires skilled personnel for VPI insulation testing and AVR diagnostics
Water‑cooling variant adds plumbing complexity and potential leak points
Designed for 50 Hz operation; vessels standardising on 60 Hz would need a different model

Typical Vessels: Crude oil tanker (VLCC)LNG carrierLarge container ship (>10,000 TEU)Cruise linerOffshore supply vessel / platform support vessel

Certifications: IEC 60034‑18‑32IEEE Std 117‑1974DNV GLABSLloyd's Register

Decision Guide: Choose if you need a high‑capacity (≈1 MW) LV generator with proven ABB reliability, robust H‑class insulation and flexible cooling for long voyages in harsh marine climates. Avoid if vessel space is severely constrained, the installation requires a higher IP rating than IP44, or the ship operates on 60 Hz power systems.

Use Cases: Primary auxiliary power plant for hotel loads, emergency generators, dynamic positioning support, and shore‑side power export on large tankers, LNG carriers and cruise ships where continuous, high‑quality electricity is critical.

Manufacturer Datasheet

Datasheet

AMG 1120-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 enclosure provides excellent resistance to salt spray and dust in harsh marine environments
Class H VPI (vacuum pressure impregnation) insulation gives superior thermal endurance and moisture resistance
Dual cooling options (air‑flow or water‑cooled) allow flexible installation in confined engine rooms
Integrated UNITROL AVR with UEL/OEL limits ensures stable voltage regulation under varying loads
Modular frame sizes (400–630) and sealed‑for‑life bearing options reduce on‑board footprint and maintenance

Weaknesses

Large physical size and weight limit suitability for smaller vessels or retrofits
Initial capital cost is higher than lower‑rated generators
Requires skilled personnel for VPI insulation testing and periodic partial‑discharge monitoring
Standard version operates at 50 Hz only; a separate 60 Hz variant must be ordered if required
Complex cooling system may need additional filtration and water‑treatment infrastructure

Typical Vessels: VLCC / Aframax TankerLarge Container Ship (≥10,000 TEU)Cruise ShipOffshore Supply VesselLNG CarrierRo‑Ro/Passenger Ferry

Certifications: DNV GL Marine Generator ApprovalABS Marine Equipment CertificationLR (Lloyd's Register) Marine Machinery ApprovalIEC 60034-18-32 (Insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need >1 MW auxiliary power on a large vessel, require robust IP55 protection and high‑temperature insulation, and want flexible cooling options with integrated AVR. Avoid if the ship has limited engine‑room space, operates on 60 Hz only, or budget constraints preclude a premium generator.

Use Cases: Main‑propulsion auxiliary sets supplying hotel load on cruise liners, emergency power for safety systems on tankers, bulk power for cargo handling equipment on offshore platforms, and redundancy generation on LNG carriers where continuous high‑capacity electricity is critical.

Manufacturer Datasheet

Datasheet

AMG 1120-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.12 MVA) suitable for large auxiliary or emergency power sets.
Vacuum pressure impregnated (VPI) H‑class insulation provides excellent thermal endurance and moisture resistance.
Dual axial fan design with optional water‑cooling gives flexible cooling for a wide ambient temperature range (-20 °C to +45 °C).
Sealed‑for‑life bearing option reduces maintenance intervals on frames below 400 kN·m.
ABB’s proven AVR families (UNITROL 1000, GEN06/GEN08) integrated for stable voltage regulation.

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and limited water ingress; not suitable for harsh spray‑down zones without additional shielding.
Large physical footprint and weight typical of >1 MVA generators may limit installation on space‑constrained vessels.
Requires regular insulation monitoring (Megger, PD) in marine humidity to avoid premature winding degradation.
Optional water‑cooling adds complexity and potential for leaks if not properly maintained.
AVR units must be isolated during insulation testing, adding procedural steps.

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships >8 000 TEUCruise linersOffshore supply vesselsLNG carriers

Decision Guide: Choose if you need a robust >1 MVA auxiliary generator with proven ABB reliability, VPI H‑class insulation and flexible cooling options for large merchant or offshore vessels. Avoid if the installation area requires higher ingress protection (e.g., IP55), weight/space constraints are critical, or the operating environment is extremely corrosive without additional shielding.

Use Cases: Typically installed as a main auxiliary generator on large tankers, container ships and cruise vessels to supply hotel load, cargo handling equipment and emergency power. Also used on offshore platforms where high‑capacity, low‑maintenance power generation is required.

Manufacturer Datasheet

Datasheet

AMG 1120-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1120 kVA) suitable for large vessel hotel loads and propulsion auxiliaries
Robust VPI H‑class insulation provides excellent moisture and thermal resistance
Flexible cooling options (dual axial fans with optional water‑cooling) adapt to a wide ambient temperature range
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation protection
IP44 enclosure meets marine environmental requirements for dust and splash protection

Weaknesses

Large physical footprint and weight demand substantial installation space and structural support
Maintenance intensive – requires regular insulation resistance, bearing temperature and vibration monitoring
IP44 provides only limited sealing; harsher environments may call for higher IP ratings
Water‑cooled variant adds complexity (pumps, heat exchangers, corrosion control)
Requires skilled personnel for VPI insulation testing and AVR troubleshooting

Typical Vessels: Cruise shipsLarge container vesselsTanker & product carriersLNG/LPG carriersOffshore supply vesselsNaval auxiliaries

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL classification

Decision Guide: Choose if you need a >1 MW auxiliary generator with proven high‑temperature insulation, flexible cooling and integrated AVR for large commercial or offshore vessels. Avoid if space is at a premium, the required power is below 500 kVA, or a higher IP rating (e.g., IP66) is mandatory for extreme splash zones.

Use Cases: Typically installed as main auxiliary generators on cruise liners, container ships and tankers to supply hotel loads, cargo handling equipment, and emergency power. Also used in offshore platforms where reliable high‑capacity generation and robust environmental protection are critical.

Manufacturer Datasheet

Datasheet

AMG 1120-440V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1120 kVA) suitable for large vessels' main auxiliary power needs
Robust IP55 sealed enclosure protects against salt spray, dust and splashing water
Class H insulation allows operation up to 180 °C rotor temperature, extending service life in hot climates
Dual axial‑fan cooling can be configured for air or water cooling, offering flexibility for different installation spaces
Integrated UNITROL AVR (1000 series) provides precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Large physical footprint and weight require substantial engine room space and structural support
Fixed 60 Hz speed limits use on vessels that operate at variable frequency or low‑speed generators
Moisture‑sensitive insulation demands regular IR testing and strict humidity control during maintenance
Nominal voltage of 440 V may necessitate step‑up transformers for ships standardized on higher bus voltages
Complex bearing lubrication (sealed‑for‑life or greasable) adds to commissioning and inspection workload

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierCruise linerOffshore supply vesselNaval auxiliary ship

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose this generator when a vessel requires a reliable, high‑power (≈1 MW) auxiliary source with strong environmental protection and proven voltage regulation. Avoid it on ships with limited engine‑room volume, where variable‑speed or lower‑weight generators are preferred, or where the standard bus voltage differs significantly from 440 V.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels to supply hotel loads, cargo handling equipment and emergency power. Also used in dual‑generator configurations for redundancy on cruise ships and offshore support vessels, where its robust enclosure and high temperature insulation are valuable in tropical or arctic operating zones.

Manufacturer Datasheet

Datasheet

AMG 1120-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1.12 MVA) suitable for main hotel load or propulsion auxiliaries
Robust Class H VPI insulation gives excellent moisture and thermal resistance
Dual axial‑fan cooling allows air‑ or water‑cooled operation across a wide ambient range
Integrated UNITROL AVR provides precise voltage regulation and built‑in under/over‑excitation limits
Sealed‑for‑life bearings on frames <400 reduce routine lubrication requirements

Weaknesses

IP23 enclosure offers limited protection against heavy spray or immersion, requiring careful placement in dry compartments
Large physical footprint and weight demand dedicated generator room space and structural support
Maintenance of VPI windings still requires periodic insulation resistance testing and moisture control
Higher initial capital cost compared with lower‑rated marine alternators
Requires skilled personnel for commissioning and condition monitoring (e.g., partial discharge analysis)

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable >1 MVA auxiliary generator with strong insulation, flexible cooling options and integrated AVR for large merchant or offshore vessels. Avoid if space is severely constrained, a higher IP rating is required for exposed locations, or the budget cannot accommodate the premium cost of a high‑power Class H unit.

Use Cases: Typically installed as a main hotel‑load generator on tankers, container ships and cruise vessels, or as an emergency power source on offshore supply platforms where robust performance under harsh marine conditions is essential. Also used to support dynamic positioning systems that demand stable voltage and rapid load response.

Manufacturer Datasheet

Datasheet

AMG 1120-690V-50Hz-IP44

· low‑voltage synchronous marine generator

Power (kVA)

1120

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1.12 MVA) suitable for large hotel‑load or DP applications
VPI (vacuum pressure impregnation) Class H insulation provides excellent moisture resistance and thermal endurance
IP44 enclosure tolerates harsh marine spray and dust while allowing easy access for maintenance
Dual cooling options (air‑flow with axial fans, optional water‑cooling) adapt to varied ambient conditions
Integrated UNITROL AVR system offers precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Large physical footprint and weight require dedicated generator room space
Maintenance intensive – bearing greasing, insulation testing and fan cleaning are mandatory on a regular schedule
Sensitive to moisture ingress; insulation resistance must be monitored frequently in tropical or high‑humidity service
Requires skilled electrical crew for megger/partial‑discharge diagnostics and AVR commissioning
Fixed 690 V output limits compatibility with vessels that standardise on higher voltage (e.g., 11 kV) auxiliary systems

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsCruise LinersOffshore Supply VesselsLNG/LPG carriersFloating Production Storage and Offloading units (FPSO)

Decision Guide: Choose if the vessel needs a reliable >1 MVA auxiliary source at 690 V, operates in harsh marine environments, and has crew capable of regular bearing, cooling‑system and insulation maintenance. Avoid if space is limited, power demand can be met with smaller generators, or the ship prefers higher voltage auxiliary distribution to reduce current losses.

Use Cases: Typically installed as a main auxiliary generator supplying hotel services, cargo handling equipment, dynamic positioning thrusters, and emergency power on large merchant and offshore vessels where redundancy and high output are critical.

Manufacturer Datasheet

Datasheet

AMG 1120-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1120 kVA) in a single unit reduces the number of generators required.
IP55 sealed enclosure protects against dust and water spray, suitable for harsh marine environments.
Class H insulation and VPI vacuum‑pressure impregnation give excellent thermal endurance up to 180 °C.
Dual axial fans with optional water cooling provide flexible cooling options for a wide ambient temperature range (-20 °C to +45 °C).
Integrated UNITROL AVR series offers built‑in voltage, under/over‑excitation and frequency regulation.

Weaknesses

Physical size and weight are large; installation requires substantial space and heavy‑lift capability.
Maintenance of the VPI insulation system demands specialised testing (megger, PD) and skilled personnel.
Only compatible with 690 V bus systems; vessels standardising on lower voltages (e.g., 440 V) would need additional conversion equipment.
Cooling performance can be limited in very hot or high‑humidity climates if airflow is obstructed.
AVR units are sensitive to moisture and salt corrosion, requiring rigorous sealing and periodic inspection.

Typical Vessels: Ultra Large Container Ships (ULCS)VLCC / Suezmax TankersCruise LinersLNG CarriersOffshore Supply VesselsNaval Auxiliary Ships

Certifications: IEC 60034‑18‑32 (insulation ageing test)IEEE Std 117‑1974DNV GL classification approvalABS class approval

Decision Guide: Choose if you need a single, high‑capacity generator at 690 V with robust environmental protection and integrated AVR for large merchant or offshore vessels. Avoid if vessel space is limited, the electrical system uses lower voltage levels, or you lack access to specialised VPI insulation testing facilities.

Use Cases: Main auxiliary power plant on large container ships and tankers, hotel‑load generation on cruise ships, emergency power supply on LNG carriers, and shore‑power support for offshore platforms where a reliable 1 MW+ source is required.

Manufacturer Datasheet

Datasheet

AMG 1120-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High output (1.12 MVA) in a compact LV frame suitable for deck‑mounted installation
Class H VPI insulation provides excellent moisture and thermal resistance for harsh sea environments
Dual axial fans enable flexible air or water cooling, maintaining temperature up to +45 °C ambient
Integrated UNITROL AVR series offers precise voltage regulation with under/over‑excitation protection
Standard IP23 enclosure meets marine splash‑proof requirements while allowing easy access for maintenance

Weaknesses

IP23 provides only splash protection; not dust‑tight, requiring careful placement in salty spray zones
Large physical footprint and weight (exact figures not disclosed) may limit installation on space‑constrained vessels
Fixed 690 V output often requires step‑up transformers for ships operating at higher bus voltages
Frames below 400 require sealed‑for‑life bearings; larger frames need regular greasing, increasing maintenance effort
Performance can degrade if cooling airflow is obstructed or if VPI insulation becomes contaminated by moisture

Typical Vessels: Cruise shipsContainer vesselsBulk carriersTankersOffshore supply & support vesselsLNG/LPG carriers

Decision Guide: Choose if you need a reliable >1 MVA auxiliary generator with robust insulation, flexible cooling options and integrated AVR for large commercial ships. Avoid if vessel space is extremely limited, higher bus voltage is required without transformer, or only dust‑tight enclosure (IP54+) is acceptable.

Use Cases: Commonly installed as main auxiliary power source for hotel loads, emergency generators, dynamic positioning systems, and shore‑power conversion on cruise liners, tankers and offshore support vessels where high reliability and marine‑grade insulation are critical.

Manufacturer Datasheet

Datasheet

AMG 1120-690V-60Hz-IP44

· marine synchronous generator

Power (kVA)

1120

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1120 kVA) in a compact LV frame suitable for large ship auxiliaries
Class‑H vacuum pressure impregnated (VPI) stator/rotor insulation gives excellent thermal and moisture resistance
Flexible cooling options – dual axial fans with optional water‑cooling for operation up to +45 °C ambient
Sealed‑for‑life bearing design (frame <400) reduces routine lubrication maintenance
ABB’s proven UNITROL 1000 series AVR provides precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

Physical size and weight are substantial; installation requires adequate space and handling equipment
IP44 rating protects against splashing water only – not dust tight, so additional sealing may be needed in very harsh environments
Requires regular insulation resistance testing (Megger) to monitor moisture ingress typical for marine VPI units
Limited to 690 V output; ships needing higher bus voltages must use step‑up transformers
AVR tuning and diagnostics demand trained personnel familiar with ABB UNITROL systems

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsContainer vessels >10,000 TEUOffshore supply & platform support vessels

Certifications: DNVABSLR

Decision Guide: Choose if you need a reliable 1‑2 MW auxiliary generator at 690 V with robust H‑class insulation, flexible cooling and low‑maintenance sealed bearings for large commercial or offshore vessels. Avoid if the vessel requires higher voltage busbars, has severe weight/space constraints, or lacks access to qualified personnel for periodic insulation testing and AVR servicing.

Use Cases: Main auxiliary power generation for hotel load on cruise ships, emergency power on tankers and LNG carriers, bulk‑power supply for offshore platform support vessels, and as a standby generator in naval auxiliaries where high reliability and marine‑grade protection are mandatory.

Manufacturer Datasheet

Datasheet

AMG 1120-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1120

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1120 kVA) suitable for large vessel auxiliary or emergency generation
IP55 sealed enclosure resists salt spray, dust and water ingress
Class‑H vacuum pressure impregnation (VPI) insulation provides excellent thermal endurance
Dual cooling options (air‑flow with axial fans and optional water‑cooling) adapt to varied ambient conditions
Integrated UNITROL/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Large physical footprint and high weight require substantial engine‑room space
Bearings may be sealed‑for‑life only on lower frames; higher frames need periodic greasing, increasing maintenance effort
Insulation performance can degrade if moisture penetrates the VPI system – strict humidity control needed during storage and operation
Fixed 690 V output may require step‑up transformers for vessels standardized on higher voltages
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Cruise shipsLNG carriersOffshore supply vessels (OSVs)Container ships (>10 000 TEU)Naval auxiliary vessels

Certifications: DNV GL Marine ClassificationABS (American Bureau of Shipping) ApprovalLR (Lloyd's Register) CertificationIEC 60034‑18‑32 insulation ageing standardIEEE Std 117‑1974 marine generator standard

Decision Guide: Choose if: you need a reliable >1 MW auxiliary power source for large vessels, operate in salty or dusty environments, and have sufficient engine‑room volume for the unit. Avoid if: space is at a premium, weight limits are strict, or the vessel’s electrical system is standardized on voltages other than 690 V without ready transformer capacity.

Use Cases: The AMG 1120 is typically installed as main auxiliary generators on large passenger ships and LNG carriers to supply hotel loads and emergency power. It also serves as a standby generator for offshore platforms and can be part of diesel‑electric propulsion or dynamic positioning systems where high, stable power is required.

Manufacturer Datasheet

Datasheet

AMG 1250-400V-50Hz-IP23

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.25 MVA) in a single unit reduces plant footprint compared with multiple smaller generators.
Insulation class H and VPI vacuum‑pressure‑impregnated windings give excellent thermal endurance and moisture resistance.
Integrated UNITROL AVR provides automatic voltage regulation, under/over‑excitation limiting and load‑share capability.
Modular cooling (dual axial fans with optional water‑cooling) adapts to a wide ambient temperature range (-20 °C to +45 °C).
Certified by major classification societies (DNV GL, ABS) and complies with IEC 60034‑18‑32 and IEEE Std 117.

Weaknesses

IP23 enclosure protects only against solid objects >12.5 mm and spray; not suitable for directly wet locations.
Large physical size and weight require substantial installation space and handling equipment.
Bearing maintenance can be intensive on the larger frame sizes (pedal‑type bearings may need greasing).
Moisture ingress remains a critical failure mode; regular insulation resistance and PD testing are mandatory.
Higher initial capital cost compared with conventional diesel‑engine generators of similar rating.

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsCruise LinersOffshore Supply VesselsLNG/LPG carriersNaval auxiliary ships

Certifications: IEC 60034-18-32IEEE Std 117-1974DNV GLABS

Decision Guide: Choose if you need a reliable >1 MVA auxiliary or emergency power source on a large vessel, require robust thermal performance and integrated AVR, and have sufficient space for a high‑capacity generator. Avoid if the installation area is confined, a higher IP rating (e.g., IP55) is mandatory, or operating budgets favour lower‑cost diesel generators with simpler maintenance.

Use Cases: Typically installed as the main emergency generator plant on large merchant vessels, providing hotel load and propulsion support during power outages; also used for shore‑power generation on offshore platforms where high continuous output and rapid voltage regulation are essential.

Manufacturer Datasheet

Datasheet

AMG 1250-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.25 MVA) suitable for main hotel load or emergency supply
Class H VPI insulated windings provide excellent thermal endurance in hot marine environments
Dual cooling options (air‑flow and optional water spray) give flexibility for different installation spaces
Integrated UNITROL AVR series offers precise voltage regulation with under/over‑excitation protection
Sealed‑for‑life bearings on frames <400 reduce routine lubrication maintenance

Weaknesses

Large physical footprint and weight may limit installation in space‑constrained engine rooms
IP44 rating protects against splashing only; additional sealing is required in heavily sprayed zones
Standard model operates at 50 Hz – a separate 60 Hz version must be ordered if required
Initial capital cost is higher than lower‑rated generators from competing manufacturers
Routine moisture and insulation testing are critical to avoid humidity‑induced winding degradation

Typical Vessels: Crude oil tankerLNG carrierContainer ship (>10 000 TEU)Cruise linerOffshore supply vesselNaval auxiliary ship

Certifications: IMO D‑2DNV GL approvalABS classification

Decision Guide: Choose if you need a proven, high‑capacity (≥1 MVA) generator with robust Class H insulation, dual cooling flexibility and ABB’s global service support. Avoid if vessel space is severely limited, only 60 Hz operation is required, or the budget cannot accommodate the higher upfront cost of a premium synchronous unit.

Use Cases: Typically installed as primary auxiliary generators on large tankers, cruise ships and offshore vessels to supply hotel loads, cargo‑handling equipment and emergency power. Also used in platform power plants where reliable, high‑output electricity is critical.

Manufacturer Datasheet

Datasheet

AMG 1250-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.25 MVA) in a single unit reduces the need for multiple generators.
IP55 enclosure and vacuum pressure impregnated (VPI) windings give excellent resistance to salt spray, moisture and mechanical shock.
Dual‑axial fan cooling provides flexible air or water cooling options for varied installation spaces.
H‑class insulation allows operation up to 180 °C, extending service life in high‑temperature zones.
Compliant with IEC 60034‑18‑32 and IEEE Std 117‑1974, facilitating classification approval.

Weaknesses

Large physical size and weight typical of a frame‑1250 unit may limit installation on smaller vessels.
Requires regular insulation resistance testing (Megger) due to moisture sensitivity in marine service.
Greaseable bearing design for this frame size entails periodic re‑greasing and condition monitoring.
AVR integration (UNITROL 1000/GEN series) adds complexity to commissioning and fault diagnostics.
Fixed 400 V output may necessitate additional step‑up transformers for higher bus voltages.

Typical Vessels: Crude oil tankerLNG carrierContainer ship (large class)Cruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable >1 MW auxiliary generator with strong environmental protection for large ocean‑going vessels or offshore platforms. Avoid if space, weight, or lower power requirements make a smaller LV generator more suitable, or if you prefer a fully sealed‑for‑life bearing design.

Use Cases: Main‑propulsion auxiliary power, hotel load supply, emergency generation and dynamic positioning support on high‑capacity tankers, cruise ships and offshore support vessels where robust cooling and corrosion resistance are critical.

Manufacturer Datasheet

Datasheet

AMG 1250-400V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1 250 kVA) in a single unit reduces the number of generators needed
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Flexible cooling options – double axial fans with optional water‑cooling for varied climate conditions
Sealed‑for‑life bearings on frames <400 minimise routine lubrication and maintenance
Integrated UNITROL AVR series (1000, GEN06/GEN08) offers precise voltage regulation and protection functions

Weaknesses

IP23 enclosure only protects against limited splashing; not suitable for harsh spray zones without additional shielding
Physical footprint is large; requires dedicated generator room and adequate ventilation space
VPI insulation inspection demands specialised megohmmeter testing and partial‑discharge analysis
Initial capital cost is higher than lower‑rated or modular alternatives
Requires skilled personnel for bearing monitoring and AVR troubleshooting in marine environments

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsCruise LinersOffshore Supply VesselsLNG carriersNaval auxiliary ships

Certifications: IEC 60034-18-32IEEE 117-1974

Decision Guide: Choose if you need a high‑capacity, robustly insulated generator with flexible cooling for main or emergency power on large vessels where space and maintenance intervals can accommodate its size. Avoid if the installation area requires higher ingress protection (e.g., IP55), has severe weight/space constraints, or if operational budgets favour lower‑rated modular units.

Use Cases: Provides primary auxiliary power for hotel loads, cargo handling equipment, and emergency generators on large tankers, container ships, and cruise vessels; also used as a standby generator on offshore platforms where reliable high‑power output is critical.

Manufacturer Datasheet

Datasheet

AMG 1250-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1 250 kVA) suitable for large auxiliary power demands
Robust IP44 enclosure provides protection against splashing water and dust in harsh sea environments
Class‑H insulation and VPI vacuum pressure impregnation give excellent thermal endurance and moisture resistance
Integrated UNITROL or GEN AVR options enable precise voltage regulation and built‑in under/over‑excitation limits
Dual axial fans allow flexible air‑cooling, with optional water‑cooling for hot climates

Weaknesses

Large physical footprint (frame ≥400) requires substantial engine room space and heavy foundations
IP44 rating does not protect against full immersion; additional sealing may be needed in very wet compartments
Maintenance of VPI‑impregnated windings demands specialized testing equipment (Megger, PD analysis)
Higher initial capital cost compared with lower‑rated generators or diesel‑alternator sets
Requires skilled personnel for AVR configuration and periodic insulation monitoring

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a high‑capacity, temperature‑resistant auxiliary generator for large vessels operating in warm or tropical waters and you have the space and skilled crew to support VPI‑based windings. Avoid if: envelope size, weight, or budget constraints are critical, or if the installation area cannot meet IP44 protection requirements.

Use Cases: The AMG 1250 is typically installed as a main auxiliary generator on large ocean‑going vessels to supply hotel loads, cargo handling equipment and emergency power. It is also used on offshore platforms where reliable, high‑power output and resistance to humidity and salt spray are essential.

Manufacturer Datasheet

Datasheet

AMG 1250-400V-60Hz-IP55

· marine synchronous generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1250 kVA) in a compact LV frame series.
H‑class insulation (Class H) permits operation up to 180 °C, giving good overload capability.
IP55 enclosure safeguards against dust and water ingress, suitable for salt‑water exposure.
Dual axial fan cooling with optional water‑cooling adapts to a wide range of ambient conditions.
Integrated UNITROL AVR series delivers precise voltage regulation with built‑in UEL/OEL limiters.

Weaknesses

Bearings on frames ≥450 require periodic re‑greasing, increasing maintenance workload.
Physical footprint is larger than newer compact diesel generators of similar rating.
Moisture sensitivity demands rigorous insulation testing and moisture control procedures.
Higher upfront capital cost compared with smaller or modular generator sets.
Requires dedicated ventilation space and cooling ducting on board.

Typical Vessels: Container ShipBulk CarrierGeneral Cargo VesselRo‑Ro FerryOffshore Supply VesselCruise Ship (auxiliary power)

Certifications: IMO D-2IEC 60034-18-32IEEE Std 117-1974ABSDNV GLLloyd's Register

Decision Guide: Choose this generator when you need a proven, high‑output marine synchronous unit with robust IP55 protection and flexible cooling for vessels operating in harsh environments. Avoid it if space is at a premium, maintenance resources are limited, or a lower initial cost solution is preferred.

Use Cases: The AMG 1250‑400V‑60Hz‑IP55 is typically installed as the main propulsion auxiliary generator on mid‑size cargo and passenger ships, providing reliable electrical power for hotel loads, deck machinery, and emergency systems. It is also used on offshore supply vessels where high temperature tolerance and corrosion resistance are critical.

Manufacturer Datasheet

Datasheet

AMG 1250-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.25 MVA) in a compact LV frame suitable for auxiliary plant layouts.
Class H vacuum‑pressure‑impregnated insulation provides excellent thermal endurance and moisture resistance.
Dual cooling options (air‑flow via double axial fans or water‑cooled) allow adaptation to ship climate conditions.
Integrated UNITROL 1000 series AVR gives precise voltage regulation and built‑in under/over‑excitation protection.
Sealed‑for‑life bearing design reduces routine maintenance intervals.

Weaknesses

IP23 enclosure only protects against solid objects >12.5 mm and water spray; not suitable for harsh wash‑down areas requiring IP55 or higher.
Large frame size (≈frame 1250) may limit installation on vessels with tight machinery spaces.
Moisture ingress can still affect insulation over time; requires regular IR and partial‑discharge testing.
Cooling performance depends on clean fan blades and unobstructed airflow; fouling in marine environments must be managed.
Higher initial capital cost compared with basic low‑spec generators of similar rating.

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierOffshore supply vesselCruise liner

Certifications: DNV GL Type ApprovalABS Marine Equipment Certification

Decision Guide: Choose if you need a reliable 1.25 MVA auxiliary power source with marine‑grade H‑class insulation, flexible cooling and integrated AVR on vessels that can accommodate an IP23 deck‑mounted unit. Avoid if the installation area requires higher ingress protection (IP55+), space is severely constrained, or operating budgets favour lower‑spec generators.

Use Cases: Provides main auxiliary power for hotel loads, cargo handling equipment, dynamic positioning thrusters and emergency generator sets on large commercial ships; also used as a dedicated standby unit for critical shipboard systems on offshore platforms.

Manufacturer Datasheet

Datasheet

AMG 1250-440V-50Hz-IP44

· marine synchronous generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (1.25 MVA) in a compact LV frame suitable for large vessels
Robust VPI H‑class insulation provides excellent moisture and thermal resistance
Flexible cooling – double axial fans with optional water‑cooling for hot climates
Integrated UNITROL AVR (U/Hz, UEL/OEL) gives precise voltage regulation and protection
IP44 enclosure meets marine environmental requirements (dust & splash proof)

Weaknesses

Physical size and weight require dedicated generator room and structural support
Bearings are not sealed‑for‑life on the largest frames; they need periodic greasing or monitoring
Insulation performance can degrade if moisture ingress occurs – requires strict humidity control during maintenance
Higher upfront cost compared with standard diesel gensets of similar kVA
Requires skilled personnel for VPI insulation testing and AVR calibration

Typical Vessels: Cruise shipsLNG carriersOffshore supply vessels (OSV)Container shipsTankers with high hotel load or DP requirementsNaval auxiliary vessels

Certifications: IEC 60034-18-32IEEE Std 117‑1974DNV GL class notation for generatorsABS classification

Decision Guide: Choose if you need a high‑capacity, low‑maintenance synchronous generator with proven voltage regulation and marine‑grade protection for vessels that have sufficient space and require reliable hotel or DP power. Avoid if vessel size is constrained, budget is limited, or the crew lacks expertise in VPI insulation testing and AVR servicing.

Use Cases: Main auxiliary power plant on cruise liners, emergency power supply on tankers, dynamic positioning thruster drive on offshore vessels, high‑density hotel load generation for LNG carriers, and shore‑power conversion units where stable voltage and frequency are critical.

Manufacturer Datasheet

Datasheet

AMG 1250-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1250 kVA) in a compact LV frame (400–630) suitable for large ships
Robust IP55 enclosure and H‑class VPI insulation provide excellent resistance to salt, moisture and thermal ageing
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C
Integrated UNITROL AVR (U/Hz, UEL/OEL) delivers stable voltage regulation and built‑in protection limits
ABB’s modular product line enables easy scaling and compatibility with other ABB marine power systems

Weaknesses

Large physical footprint and high weight require dedicated generator room and heavy foundations
Maintenance of VPI insulation and sealed‑for‑life bearings demands specialized testing (Megger, PD) and skilled personnel
Standard version is fixed at 50 Hz only; dual‑frequency variants are not offered for this model
Cooling fans can accumulate salt deposits in harsh marine environments, increasing inspection frequency
Higher initial capital cost compared with some lower‑rated competitors

Typical Vessels: Crude oil tankerContainer ship (12 000–20 000 GT)Bulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a reliable >1 MW main or auxiliary generator with strong environmental protection, have sufficient space for a frame‑400/630 unit, and value ABB’s global service network. Avoid if vessel size limits installation space, dual‑frequency operation is required, or budget constraints favor smaller, less expensive generators.

Use Cases: Installed as the primary propulsion auxiliary generator on large merchant vessels to supply shipboard electrical loads and emergency power; also used in standby/emergency power sets where high reliability and rapid voltage regulation are critical. Frequently paired with ABB’s digital monitoring (Ability LEAP) for condition‑based maintenance.

Manufacturer Datasheet

Datasheet

AMG 1250-440V-60Hz-IP23

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.25 MVA) in a compact LV frame suitable for many vessel sizes
Class H vacuum pressure impregnated (VPI) stator and rotor insulation gives excellent thermal endurance and moisture resistance
Dual axial‑fan cooling allows air or water‑cooled operation, adaptable to shipboard ventilation conditions
Integrated UNITROL AVR series provides precise voltage regulation with under/over‑excitation protection
Sealed‑for‑life bearings on frames <400 reduce routine lubrication maintenance

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and water spray; not suitable for areas exposed to direct sea water ingress
Large physical dimensions and weight may limit installation in space‑constrained engine rooms
VPI insulation, while robust, still requires regular megger and partial‑discharge testing in humid marine environments
Cooling performance depends on unobstructed airflow; fan fouling by salt deposits can cause overheating
Higher initial capital cost compared with lower‑rated or simpler diesel generators

Typical Vessels: Cruise shipContainer vesselBulk carrierTankerOffshore supply vesselLNG carrierRo‑Ro ferry

Certifications: DNVABSIEC 60034‑18‑32 (insulation ageing standard)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 1.25 MVA auxiliary generator with robust Class H insulation, flexible cooling options and integrated AVR for vessels with moderate exposure to spray but not direct immersion. Avoid if the installation area requires higher ingress protection (e.g., IP55) or if weight/space constraints are critical.

Use Cases: Typically installed as a main auxiliary generator on large merchant ships to supply hotel loads, cargo handling equipment and emergency power; also used on offshore platforms where high continuous power and tight voltage regulation are required.

Manufacturer Datasheet

Datasheet

AMG 1250-440V-60Hz-IP44

· marine synchronous generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1 250 kVA) in a compact LV frame suitable for large vessels
IP44 enclosure protects against splashing and limited dust, ideal for harsh marine environments
VPI H‑class insulation system offers superior moisture resistance and long life
Dual cooling options – double axial fans with optional water‑cooling – allow operation from -20 °C to +45 °C
Integrated ABB UNITROL 1000/GEN AVR provides precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

Physical size and weight are substantial; installation requires ample machinery space
Bearings are sealed‑for‑life only up to frame 400; larger frames need periodic greasing and monitoring
IP44 does not protect against heavy dust or full immersion, limiting use in extreme exposure zones
Designed for 60 Hz operation; vessels requiring 50 Hz may need a different model
Maintenance of VPI insulation demands strict humidity control during inspections

Typical Vessels: Crude oil tankerContainer shipCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose this generator when a vessel needs reliable high‑capacity auxiliary power (≈1 250 kVA) with robust protection against splashing, flexible cooling options and proven ABB AVR control. Avoid it if space or weight are at a premium, if higher dust/infiltration protection (e.g., IP55) is required, or if the ship operates on 50 Hz systems.

Use Cases: Typically installed as the main auxiliary generator on large merchant ships to supply hotel loads, cargo handling equipment, and emergency power. Also used in dynamic positioning setups where high, stable electrical output is essential for thruster drives.

Manufacturer Datasheet

Datasheet

AMG 1250-440V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1 250 kVA) suitable for large vessels and offshore platforms
IP55 enclosure provides robust protection against dust and water spray
Class‑H VPI insulated windings give excellent thermal endurance and moisture resistance
Flexible cooling options (dual axial fans with optional water‑cooling) adapt to varied installation spaces
Integrated UNITROL 1000/GEN AVR series offers precise voltage regulation and built‑in over/under‑excitation limits

Weaknesses

Large physical size and weight demand substantial engine‑room space and structural support
Initial capital cost is higher than lower‑rated or less robust alternatives
Maintenance of high‑temperature Class‑H insulation requires specialized testing (megger, tan‑delta) and skilled personnel
Designed for 60 Hz operation only; vessels standardized on 50 Hz would need a different model
Ventilation requirements are strict to maintain the IP55 rating, increasing auxiliary system complexity

Typical Vessels: Cruise shipLNG carrierContainer vesselBulk carrierOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a high‑capacity, weather‑proof generator for 60 Hz vessels with demanding power quality and can accommodate the size and cooling infrastructure. Avoid if your vessel operates on 50 Hz, has limited engine‑room volume, or budget constraints preclude a premium‑class unit.

Use Cases: The AMG 1250 is typically installed as the main auxiliary generator on large passenger ships, LNG carriers, and offshore support vessels where continuous, reliable power for propulsion auxiliaries, hotel loads, and cargo handling equipment is critical. It also serves as a standby or redundancy unit in dual‑generator configurations on high‑value platforms.

Manufacturer Datasheet

Datasheet

AMG 1250-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.25 MW) in a single unit reduces the number of generators needed
VPI (vacuum pressure impregnation) insulation class H provides excellent moisture resistance and long life in salty environments
Dual axial‑fan cooling allows flexible air or water cooling to suit vessel layout
Integrated ABB UNITROL 1000/GEN AVR family offers precise voltage regulation and built‑in under/over‑excitation protection
IP23 enclosure meets marine deck installation standards while allowing easy access for maintenance

Weaknesses

Large physical footprint and weight require substantial space and structural support
Bearings on frame sizes >450 need periodic greasing or re‑lubrication, increasing maintenance effort
IP23 is only splash‑proof; additional sealing may be required in harsh spray zones
Fixed 690 V output may necessitate step‑up transformers for vessels that operate at higher bus voltages
Higher initial capital cost compared with smaller modular generator sets

Typical Vessels: Crude oil tankerLNG carrierContainer ship (>10,000 TEU)Cruise linerOffshore supply vesselNaval auxiliary / support ship

Certifications: DNV GL Marine ClassificationABS (American Bureau of Shipping) ApprovalLloyd's Register (LR) ClassIEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a single, high‑capacity auxiliary generator for a large vessel with robust moisture‑resistant insulation and flexible cooling options, especially when an ABB ecosystem (AVR, monitoring) is already in place. Avoid if space, weight or strict splash‑proof requirements dominate the design, or if a higher bus voltage is required without additional step‑up equipment.

Use Cases: Typically installed as part of the main auxiliary power plant on large tankers and cruise ships to supply propulsion hotel loads and emergency power; also used on offshore platforms where reliable high‑power generation with low maintenance intervals is critical.

Manufacturer Datasheet

Datasheet

AMG 1250-690V-50Hz-IP44

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1 250 kVA) in a single unit reduces the need for multiple generators.
Robust VPI H‑class insulation and sealed‑for‑life bearings provide long service life in salty, humid conditions.
Flexible cooling options (dual axial fans with optional water‑cooling) handle a wide ambient temperature range (-20 °C to +45 °C).
Integrated ABB UNITROL 1000/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation protection.
Meets IEC 60034‑18‑32, IEEE Std 117‑1974 and is certified by major classification societies (DNV, ABS, LR).

Weaknesses

Large physical footprint (frame size ≥1250 mm) may limit installation on space‑constrained vessels.
IP44 rating protects against splashing only; additional sealing required in dust‑heavy or fully submersible areas.
Requires periodic VPI insulation testing and bearing inspections to maintain reliability.
Fixed 690 V output necessitates step‑up transformers for ships that operate at higher bus voltages.
Water‑cooling variant adds complexity (pumps, piping) and potential leak points.

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>10 000 TEU)Cruise linersOffshore supply vesselsLNG carriers

Certifications: IEC 60034‑18‑32IEEE Std 117‑1974DNVABSLR

Decision Guide: Choose if you need a single, high‑capacity generator (≈1 250 kVA) with proven ABB reliability, robust marine‑grade insulation and flexible cooling for vessels that operate in harsh salt‑water environments. Avoid if vessel space is limited, the electrical system requires higher than 690 V directly from the generator, or you prefer a lower‑maintenance oil‑free or gas‑turbine solution.

Use Cases: Main auxiliary power plant on large ocean‑going vessels, emergency power generation for critical shipboard systems, and shore‑power conversion plants where a stable 690 V output can be transformed to the required grid voltage.

Manufacturer Datasheet

Datasheet

AMG 1250-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.25 MVA) suitable for large vessels and offshore platforms
Robust IP55 enclosure and Class‑H insulation withstands salt spray, humidity and temperatures up to +180 °C
Vacuum pressure impregnated (VPI) windings give excellent moisture resistance and long life
Dual axial fans provide flexible air‑cooling; water‑cooling can be added if required
Integrated UNITROL/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Large physical size and weight increase installation space and handling requirements
Requires skilled personnel for VPI‑winding inspection, bearing greasing (regreaseable frames) and AVR diagnostics
Fixed 690 V output may need additional transformers for vessels operating on different bus voltages
Sealed‑for‑life bearings are only available on frames <400; larger frames need periodic re‑greasing, adding maintenance effort
Initial capital cost is higher than lower‑rated or diesel‑engine driven generators

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsBulk carriers >30 000 dwtOffshore supply vessels / Platform support shipsCruise liners and ferries with high hotel load

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974 (generator construction)Classified by major societies (DNV, ABS, LR) – >90 % confidence for this model

Decision Guide: Choose if you need a high‑capacity, weather‑proof generator with proven ABB reliability and advanced AVR control for large commercial or offshore vessels. Avoid if space, weight or budget constraints dominate, or if the vessel operates on a bus voltage far from 690 V without ready transformer solutions.

Use Cases: Typically installed as the main propulsion auxiliary generator on ultra‑large tankers, container ships and offshore support vessels where continuous 1–2 MW power is required for hotel services, cargo handling equipment and emergency supply. Also used in cruise ships to feed large HVAC and entertainment loads while meeting strict marine classification standards.

Manufacturer Datasheet

Datasheet

AMG 1250-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.25 MVA) in a single unit reduces the number of generators required.
VPI (vacuum pressure impregnation) insulation class H provides excellent moisture resistance and long life in harsh marine environments.
Sealed‑for‑life bearing option minimizes routine lubrication and extends maintenance intervals.
Dual cooling capability (air‑only or air/water) allows adaptation to vessel layout and ambient conditions.
Designed to IEC 60034‑18‑32 and IEEE 117 standards, facilitating class approval by major societies.

Weaknesses

IP23 enclosure only protects against limited dust and water spray; not suitable for fully wet locations without additional protection.
Large physical footprint and weight require substantial engine‑room space and handling equipment.
Requires regular insulation testing (Megger, tan‑delta) to monitor H‑class winding health.
Complex AVR (UNITROL 1000/GEN series) may need specialist troubleshooting in case of fault.
Higher initial capital cost compared with lower‑power modular units.

Typical Vessels: VLCC/TankerLNG carrierCruise shipContainer vessel (>10 000 TEU)Offshore supply vesselNaval auxiliary

Certifications: DNV GLABSLR (Lloyd's Register)

Decision Guide: Choose if you need a single, high‑capacity generator with robust H‑class insulation and flexible cooling for large ships or offshore platforms. Avoid if engine‑room space is limited, a higher IP rating is required, or the operational profile favours multiple smaller units for redundancy.

Use Cases: Typically installed as the main auxiliary power source on large tankers, LNG carriers and cruise liners to supply hotel load, cargo handling equipment, and emergency power. Also used on offshore support vessels where high continuous output and reliability are critical.

Manufacturer Datasheet

Datasheet

AMG 1250-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High 1 250 kVA output in a compact low‑voltage frame suitable for major auxiliaries
Class‑H vacuum‑pressure‑impregnated insulation provides excellent moisture resistance and long service life
Dual axial fan cooling with optional water‑cooling adapts to a wide ambient temperature range
Integrated UNITROL AVR (U/Hz, UEL/OEL) ensures stable voltage regulation under load changes
Sealed‑for‑life bearing design reduces routine maintenance intervals

Weaknesses

IP44 enclosure only protects against splashing; not ideal for fully exposed wet locations
Physical size and weight may limit installation on smaller or space‑constrained vessels
Fan‑based cooling can generate higher acoustic noise compared with pure water‑cooled units
Requires rigorous insulation testing in humid marine environments to avoid moisture‑related failures
Higher initial capital cost relative to lower‑rated generators

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vesselNaval auxiliary ship

Certifications: DNV GLABSLR (Lloyd's Register)IMO D‑2

Decision Guide: Choose if you need a reliable 1.25 MW auxiliary power source with robust Class‑H insulation, flexible cooling options and integrated AVR for large commercial or offshore vessels. Avoid if space is limited, a higher IP rating (e.g., IP65) is required, or budget constraints preclude the higher upfront cost.

Use Cases: Provides main auxiliary power for hotel loads, cargo handling equipment, dynamic positioning systems, and emergency generation on large tankers, container ships, cruise vessels and offshore support platforms. Often installed as part of a redundant generator set to meet SOLAS and classification society requirements for continuous operation.

Manufacturer Datasheet

Datasheet

AMG 1250-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H insulation allows operation up to 180 °C ambient temperature, extending service life in hot climates.
IP55 sealed enclosure protects against salt spray and dust, reducing corrosion risk.
Dual cooling capability (air‑flow or water‑cooled) provides flexibility for different installation spaces.
Integrated UNITROL AVR with under/over‑excitation limits ensures stable voltage regulation under varying loads.
Modular frame design simplifies replacement and aligns with ABB’s standard spare parts inventory.

Weaknesses

Requires an external prime mover; not a complete generator‑set, increasing overall system footprint.
Large physical size and weight compared with compact diesel generator sets of similar rating.
Class H insulation is sensitive to moisture ingress; rigorous sealing and regular IR testing are mandatory.
Maintenance of the AVR and sealed bearings can be more demanding than for simpler brushless alternators.
Limited to 690 V output, so ships needing higher bus voltages must add step‑up transformers.

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D-2 (IEC 60945)DNV GL Marine Electrical Equipment ApprovalABS Classification Society approvalIEEE Std 117‑1974

Decision Guide: Choose if: you need a high‑temperature, corrosion‑resistant auxiliary generator with proven voltage regulation for vessels operating in harsh marine environments and have space for an external prime mover. Avoid if: shipyard space is at a premium, you prefer an all‑in‑one diesel generator set, or the vessel requires direct generation above 690 V without additional transformers.

Use Cases: The AMG 1250‑690V is typically installed as an auxiliary power source on large merchant vessels and cruise ships to supply hotel loads, emergency power, and DP support. It is also used on offshore platforms where reliable, temperature‑tolerant generation is required and the generator can be coupled to a dedicated diesel engine or gas turbine.

Manufacturer Datasheet

Datasheet

AMG 1400-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High short‑circuit rating thanks to Class H insulation (VPI vacuum pressure impregnation)
Dual axial fans provide flexible air‑cooling and optional water‑cooling for a wide ambient range (-20 °C to +45 °C)
Sealed‑for‑life bearing option (frames <400) reduces maintenance intervals
Modular frame sizes (180–630 mm) allow installation in confined engine rooms
Complies with IEC 60034‑18‑32 and IEEE Std 117‑1974, facilitating class society approvals

Weaknesses

IP23 enclosure offers only splash protection; not suitable for dusty or heavily sprayed environments without additional shielding
Frames ≥450 require greasable bearings, increasing routine maintenance effort
Limited to low‑voltage (≤690 V) applications; unsuitable where medium‑voltage generators are required
Moisture sensitivity of the VPI insulation demands strict humidity control during testing and operation
Physical footprint can be large for vessels with very tight space constraints

Typical Vessels: Container shipCrude oil tankerBulk carrierGeneral cargo vesselCruise linerOffshore supply vessel

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 1.4 MVA low‑voltage auxiliary generator with robust H‑class insulation, flexible air/water cooling and sealed‑for‑life bearings for reduced maintenance. Avoid if the installation requires dust‑tight (IP5X/IP6X) protection, medium‑voltage output, or minimal bearing servicing capability.

Use Cases: Typically installed as a main auxiliary generator in the engine room of large merchant vessels to supply shipboard electrical loads and emergency power; also used on cruise ships for hotel services where high reliability and low maintenance are critical.

Manufacturer Datasheet

Datasheet

AMG 1400-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.4 MVA) in a compact LV frame suitable for large vessels
Class H VPI insulation system gives excellent moisture and temperature resistance
IP44 enclosure protects against splashing seawater and dust, ideal for harsh marine environments
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C
Integrated UNITROL or GEN AVR series provides precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

Large physical footprint and weight compared with smaller diesel‑alternator sets (exact figures not published)
Requires regular insulation resistance and partial‑discharge testing to manage moisture ingress
IP44 rating does not protect against full immersion; additional sealing may be needed in spray‑zone installations
Maintenance of sealed‑for‑life bearings still demands periodic vibration and temperature monitoring
Not suitable for high‑voltage (HV) bus applications without step‑down transformers

Typical Vessels: Crude oil tankersContainer shipsBulk carriersCruise linersOffshore supply vesselsLNG carriers

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL approvalABS classificationLR (Lloyd's Register) approval

Decision Guide: Choose if you need a reliable 1.4 MVA LV generator with robust moisture‑resistant insulation, flexible cooling and integrated AVR for main or emergency service on large vessels. Avoid if space/weight are at a premium, the installation is in a fully immersed spray zone requiring higher IP rating, or you require a high‑voltage generator without additional transformers.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling equipment and emergency systems on large commercial vessels; also used in dynamic positioning setups where stable voltage regulation is critical.

Manufacturer Datasheet

Datasheet

AMG 1400-400V-50Hz-IP55

· synchronous marine generator

Power (kVA)

1400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Robust IP55 housing protects against salt spray and dust in harsh marine environments.
Class‑H VPI (vacuum pressure impregnation) insulation provides high thermal endurance and moisture resistance.
Integrated UNITROL AVR offers precise voltage regulation with under/over‑excitation limiters.
Dual axial fan cooling allows flexible air or water cooling configurations.
Sealed‑for‑life bearings (frame <400) reduce routine lubrication requirements.

Weaknesses

Fixed 400 V nominal output may require step‑up transformers for vessels standardising on higher bus voltages.
Large physical footprint compared with smaller diesel‑driven alternators of similar rating.
Requires periodic insulation testing (megger, tan‑delta) to monitor moisture ingress in the VPI system.
Higher upfront capital cost relative to conventional low‑speed diesel generators.
Complex AVR electronics demand careful handling and may need specialist service support.

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vesselPlatform supply vessel

Certifications: DNV GLABS

Decision Guide: Choose if you need a reliable, high‑temperature tolerant 1.4 MVA synchronous generator with strong environmental protection and integrated voltage regulation for vessels operating on a 400 V bus or willing to use a transformer. Avoid if the ship uses higher nominal voltages without step‑up equipment, prioritises minimal capital expenditure, or prefers low‑maintenance diesel‑engine driven alternators.

Use Cases: Primary auxiliary power for main hotel loads, cargo handling gear, and dynamic positioning systems on medium‑size tankers and container vessels; also used as emergency generators on cruise ships and offshore platforms where stable voltage and rapid response are critical.

Manufacturer Datasheet

Datasheet

AMG 1400-400V-60Hz-IP23

· synchronous marine generator

Power (kVA)

1400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.4 MVA) in a compact LV frame (400–630) suitable for large vessels
Class H insulation and VPI vacuum pressure impregnation provide excellent thermal endurance and moisture resistance
Dual axial fans allow flexible air‑ or water‑cooled operation, extending service life in hot climates
Integrated UNITROL AVR series offers precise voltage regulation with under/over‑excitation protection
ABB’s extensive field support and condition‑monitoring tools (LEAP) simplify maintenance

Weaknesses

IP23 rating limits use to protected engine‑room environments; not suitable for exposed or high‑humidity locations
Bearing lubrication may be manual (non‑sealed frames), increasing routine maintenance effort
Large physical footprint and weight compared with newer compact permanent‑magnet generators
Requires regular insulation testing (Megger, PD) to detect moisture ingress in marine service
Cooling performance depends on clean fan blades; salt‑spray fouling can reduce airflow

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10 000 TEU)Bulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑power LV generator for an indoor engine‑room with robust Class H insulation and integrated ABB AVR control. Avoid if the installation requires a higher IP rating, sealed‑for‑life bearings, or a more compact footprint such as on smaller vessels or in exposed deck spaces.

Use Cases: Typically installed as the main auxiliary power source on large ocean‑going ships, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency systems while operating continuously under harsh marine conditions.

Manufacturer Datasheet

Datasheet

AMG 1400-400V-60Hz-IP44

· synchronous marine generator

Power (kVA)

1400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High output (1.4 MVA) in a compact LV frame suitable for many vessel sizes
IP44 rating provides protection against splashing water and dust in harsh marine environments
Class H VPI‑impregnated windings give excellent thermal endurance and moisture resistance
Dual axial fans with optional water‑cooling allow flexible cooling strategies up to +45 °C ambient
Integrated UNITROL AVR series (U/Hz, UEL/OEL) delivers precise voltage regulation and overload protection

Weaknesses

IP44 does not protect against heavy ingress of dust or direct water jets; higher IP ratings are required for some applications
Large physical footprint may demand dedicated generator room space on smaller vessels
Bearing lubrication (greasable frames ≥450) requires periodic maintenance and monitoring
Moisture‑sensitive insulation demands regular megger/partial‑discharge testing to avoid premature aging
Cooling performance can be limited in very hot climates unless water‑cooling is installed

Typical Vessels: Tankers (VLCC, Aframax)Container shipsBulk carriersCruise linersOffshore supply vesselsLNG carriersNaval auxiliaries

Certifications: IEC 60034‑18‑32 (insulation ageing test)IEEE Std 117‑1974 (generator safety and performance)Class approved by major classification societies (e.g., DNV GL, ABS, LR)

Decision Guide: Choose if you need a reliable 1.4 MVA auxiliary power source with proven marine‑grade protection, integrated AVR, and the flexibility of air or water cooling. Avoid if space is extremely limited, a higher ingress protection rating (IP55+) is mandatory, or you prefer a fully sealed‑for‑life bearing design for frames >400 without periodic greasing.

Use Cases: The AMG 1400 is typically installed as the main service generator on large commercial vessels to supply propulsion auxiliaries, hotel loads, and emergency power. It is also used on offshore platforms and cruise ships where robust voltage regulation and resistance to salty, humid environments are critical.

Manufacturer Datasheet

Datasheet

AMG 1400-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal endurance thanks to Class H VPI insulation, suitable for harsh marine climates.
IP55 sealed enclosure protects against dust and water spray, reducing corrosion risk.
Modular design allows easy integration into LV (400‑5000 kVA) power systems and optional air or water cooling.
Sealed‑for‑life bearing option (frame 400) lowers maintenance intervals.
Complies with IEC 60034‑18‑32 and IEEE Std 117‑1974, facilitating class society approvals.

Weaknesses

Large physical footprint compared with compact diesel generators of similar rating.
Requires skilled personnel for AVR (UNITROL 1000/GEN) tuning and insulation testing.
Only 60 Hz operation; not suitable where dual‑frequency (50/60 Hz) capability is required.
Initial capital cost higher than lower‑rated alternatives.
Insulation condition must be monitored regularly in high‑humidity, salt‑laden environments.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a robust 1.4 MW auxiliary generator with high‑temperature insulation, IP55 protection and modular cooling options for large merchant or offshore vessels. Avoid if vessel space is limited, dual‑frequency operation is required, or you lack access to qualified electrical technicians for AVR and insulation diagnostics.

Use Cases: Typically installed as the main auxiliary power source on large cargo ships and cruise vessels, providing hotel load, emergency power, and support for dynamic positioning systems where reliable, continuous electricity is critical.

Manufacturer Datasheet

Datasheet

AMG 1400-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.4 MVA) in a relatively compact frame for LV applications.
Class H VPI insulated windings give excellent thermal endurance and corrosion resistance.
Dual‑fan design allows optional water cooling for hot climates or high load duty.
Integrated UNITROL AVR provides precise voltage regulation and built‑in under/over‑excitation limits.
Widely supported by ABB’s global service network and complies with IEC 60034‑18‑32 / IEEE 117 standards.

Weaknesses

IP23 rating only protects against large solid objects; not dust‑tight or fully splash‑proof for harsh spray zones.
Fixed 440 V output may require step‑up transformers on vessels that operate at higher LV bus voltages.
Large frame (LV standard series) can be heavy and occupy significant engine‑room space.
Marine humidity demands regular insulation resistance testing to avoid moisture‑induced degradation.
Optional water‑cooling system adds complexity and maintenance requirements.

Typical Vessels: Container shipCruise linerLNG carrierOffshore supply vesselNaval auxiliaryRo‑Ro ferry

Certifications: DNV GLABSLR (Lloyd's Register)IEC 60034‑18‑32IEEE Std 117-1974

Decision Guide: Choose if you need a proven 1.4 MVA LV generator with high temperature capability, robust ABB service support and the flexibility of air or water cooling for main‑auxiliary power on large merchant vessels. Avoid if space is at a premium, a higher bus voltage (e.g., 660 V) is required without transformer conversion, or you need a fully splash‑proof IP55/65 enclosure for extreme exposure.

Use Cases: Typically installed as the primary auxiliary generator set on large cargo and passenger ships, providing hotel load, emergency power and redundancy for propulsion auxiliaries. Also used on offshore platforms and naval support vessels where high thermal endurance and modular AVR integration are critical.

Manufacturer Datasheet

Datasheet

AMG 1400-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.4 MVA) in a compact LV frame (400‑630) suitable for medium‑size vessels
VPI (vacuum pressure impregnation) insulation class H provides excellent moisture resistance and long life
Dual axial fans with optional water cooling give flexible thermal management in hot or humid climates
Sealed‑for‑life bearings on frames <400 reduce maintenance intervals
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Physical footprint and weight are significant; installation requires ample engine room space
Frames ≥450 use greasable bearings, increasing routine lubrication workload
IP44 rating protects against splashing but may be insufficient for heavy spray zones without additional shielding
Fixed 440 V output may require step‑up transformers on vessels that standardise on higher bus voltages
Cooling performance depends on clean airflow; fan fouling in salty environments can reduce capacity

Typical Vessels: Offshore supply vesselPlatform support vesselCruise ship auxiliary plantContainer ship (mid‑size)Tanker (auxiliary power)

Certifications: IEC 60034-18-32IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 1.4 MVA auxiliary generator with proven moisture‑resistant insulation, flexible cooling options and low‑maintenance sealed bearings for medium‑size vessels. Avoid if space is at a premium, the installation requires higher bus voltage without transformers, or the operating area demands an enclosure rating above IP44.

Use Cases: Typically installed in the main auxiliary power plant of offshore support ships, cruise liners and mid‑size cargo carriers to supply hotel loads, deck machinery and emergency power. The generator is also used as a standby unit for redundancy on vessels that already have larger main generators.

Manufacturer Datasheet

Datasheet

AMG 1400-440V-50Hz-IP55

· synchronous marine generator

Power (kVA)

1400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H insulation allows operation in high ambient temperatures up to +200 °C.
IP55 sealed enclosure provides strong protection against salt spray and dust.
Dual axial‑fan cooling with optional water‑cooling gives flexible thermal management for a wide temperature range (-20 °C to +45 °C).
Integrated UNITROL 1000/GEN AVR series delivers precise voltage regulation, under/over‑excitation limiting and fault protection.
Modular frame sizes (LV 400‑630) fit standard engine rooms and simplify installation.

Weaknesses

Physical size and weight are larger than compact diesel generators of similar power, impacting space‑critical vessels.
Bearings on frames < 400 require periodic greasing; not a sealed‑for‑life unit in all configurations.
Output voltage limited to 440 V, so additional step‑up transformers are needed for high‑voltage bus systems.
Air‑flow cooling is sensitive to salt fouling; regular cleaning of fan blades and ducts is mandatory.
Initial capital cost is higher than lower‑rated generators or hybrid alternatives.

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierCruise linerOffshore supply vessel

Certifications: DNV GL Type ApprovalABS Classification Society approvalLloyd's Register approvalIEC 60034‑18‑32 complianceIEEE Std 117‑1974 compliance

Decision Guide: Choose this generator when you need a high‑power (≈1.4 MVA) auxiliary source with robust environmental protection, Class H insulation and flexible cooling for harsh sea conditions. Avoid it on vessels where space, weight or low‑voltage output constraints dominate, or when a hybrid/electric solution is preferred.

Use Cases: The AMG 1400‑440V‑50Hz‑IP55 is typically installed as the main auxiliary generator on large ocean‑going ships to supply hotel loads, cargo handling equipment and emergency power. Its rugged design makes it suitable for offshore platforms and vessels operating in tropical or high‑temperature regions where reliable cooling and corrosion resistance are critical.

Manufacturer Datasheet

Datasheet

AMG 1400-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High 1 400 kVA output suitable for large vessel auxiliaries
Class H VPI insulation offers excellent thermal endurance and moisture resistance
Dual axial fans with optional water‑cooling adapt to a wide ambient temperature range (-20 °C to +45 °C)
Integrated UNITROL AVR series provides precise voltage regulation and built‑in under/over‑excitation limits
ABB global service network and LEAP condition‑monitoring enable predictive maintenance

Weaknesses

IP23 enclosure only protects against large solid objects; additional sealing may be required in harsh marine environments
Physical size and weight are substantial, limiting installation on space‑constrained vessels
VPI insulation is moisture‑sensitive, necessitating regular IR testing and humidity control
Bearing lubrication (sealed‑for‑life or greasable) requires careful monitoring to avoid premature wear
Higher upfront capital cost compared with some lower‑priced alternatives

Typical Vessels: Container ShipBulk CarrierTankerCruise ShipOffshore Supply VesselLNG Carrier

Decision Guide: Choose this generator when you need a high‑power (≈1.4 MVA) auxiliary source with proven ABB reliability, class H VPI insulation and flexible cooling for vessels operating in varied climates. Avoid if the installation space is limited, an IP rating higher than IP23 is mandatory, or budget constraints favor lower‑cost units.

Use Cases: Typically installed as main auxiliary generators on large merchant ships, cruise liners, offshore support vessels, and LNG carriers to supply shipboard electrical loads and emergency power. Also used in dual‑generator configurations for redundancy on high‑power platforms.

Manufacturer Datasheet

Datasheet

AMG 1400-440V-60Hz-IP44

· low‑voltage synchronous marine generator

Power (kVA)

1400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.4 MVA) in a compact LV frame suitable for main‑auxiliary applications
Robust IP44 enclosure and Class H insulation resist harsh marine humidity and temperature up to +45 °C
Flexible cooling options – dual axial fans with optional water‑cooling – for varied installation layouts
Integrated ABB UNITROL/GEN AVR families offering precise voltage regulation and protection functions (UEL/OEL)
ABB global service network and condition‑monitoring tools (LEAP) simplify maintenance

Weaknesses

Physical size and weight require dedicated machinery space and heavy‑duty foundations
IP44 rating protects against splashing only; full immersion or extreme spray zones need additional shielding
Insulation health must be monitored regularly (megger, tan‑delta) because moisture ingress is a known failure mode
Bearings may be sealed‑for‑life or greasable – the latter demands periodic inspection and re‑greasing
Higher initial capital cost compared with lower‑rated alternatives

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>8 000 TEU)Cruise linersOffshore supply vesselsLNG carriers

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE 117‑1974

Decision Guide: Choose if: you need a high‑capacity LV auxiliary generator with proven marine robustness, flexible cooling and ABB’s service support; the vessel has sufficient machinery space and operates in environments where IP44 protection is adequate. Avoid if: space or weight constraints are critical, a higher voltage (HV) generation system is preferred, or budget limits preclude the premium cost of an ABB unit.

Use Cases: Typically installed as the main auxiliary generator on large ocean‑going vessels to supply propulsion auxiliaries, hotel loads and emergency power; also used in dynamic positioning systems where stable voltage under varying load is essential.

Manufacturer Datasheet

Datasheet

AMG 1400-440V-60Hz-IP55

· Four‑pole synchronous marine generator

Power (kVA)

1400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (1 400 kVA) in a single unit reduces the number of generators needed on large vessels.
IP55 sealed enclosure and VPI (vacuum pressure impregnation) insulation class H provide excellent resistance to moisture, salt spray and thermal ageing.
Flexible cooling options – dual axial fans with optional water‑cooling – allow adaptation to varied ambient conditions.
Integrated UNITROL or GEN AVR series offers precise voltage regulation, under/over‑excitation protection and load sharing capability.
Standardised frame sizes (LV 400–630) simplify installation and spare‑parts logistics across ABB’s marine product line.

Weaknesses

Physical size and weight are substantial; installation requires ample engine‑room space and robust foundations.
Maintenance of Class H VPI insulation demands regular moisture control and periodic IR/megger testing to avoid hidden degradation.
Designed for 60 Hz operation only, limiting suitability for vessels that standardise on 50 Hz systems.
Requires dedicated cooling system design (fans or water‑cooling) which adds complexity and auxiliary power consumption.
Advanced AVR units increase initial cost and may need specialised spares and firmware updates.

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose this generator when a vessel needs a high‑capacity, robust auxiliary power source in a harsh marine environment and has the space for a large LV frame. It is especially attractive where ABB’s integrated AVR and VPI insulation can be leveraged for reliability. Avoid if the ship operates on a 50 Hz grid, has strict weight/space constraints, or cannot support the regular moisture‑control maintenance regime required for Class H insulation.

Use Cases: Typically installed as the main auxiliary generator on large merchant ships (e.g., container carriers and tankers) to supply hotel loads, cargo refrigeration, and emergency power. Also used on cruise ships and offshore vessels where redundancy and resistance to salt‑water corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 1400-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.4 MVA) in a compact LV frame suitable for large merchant vessels
Class H VPI insulation provides excellent thermal endurance and resistance to moisture ingress
Dual axial‑fan cooling allows flexible air or water cooling configurations for varied climate zones
Integrated ABB UNITROL AVR series offers precise voltage regulation with under/over‑excitation protection
Sealed‑for‑life bearing option reduces routine lubrication maintenance on frames <400

Weaknesses

IP23 rating protects only against solid objects >12.5 mm and water spray; additional sealing may be required in harsh marine environments
Large physical footprint compared with newer high‑speed generator designs, limiting installation space on smaller vessels
VPI insulation performance can degrade if moisture penetrates the enclosure, requiring regular IR and partial‑discharge testing
Cooling effectiveness limited to ambient temperatures –20 °C to +45 °C; extreme hot climates may need supplemental cooling
Requires skilled personnel for insulation diagnostics (Megger, tan‑delta) and AVR tuning

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: DNV GL class approvalIEC 60034‑18‑32 compliance

Decision Guide: Choose this generator when a proven, high‑output LV solution with robust class H insulation and ABB’s global service network is required for large merchant or offshore vessels. Avoid it if the installation space is severely constrained, a higher IP rating (e.g., IP55) is mandatory, or the vessel operates in extreme temperatures that exceed the cooling envelope.

Use Cases: Typically installed as main auxiliary generators supplying hotel load and emergency power on large tankers, container ships and cruise vessels; also used as dedicated propulsion‑auxiliary units on offshore supply ships where reliable voltage regulation and rapid start‑up are critical.

Manufacturer Datasheet

Datasheet

AMG 1400-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.4 MVA) in a compact LV frame suitable for large merchant vessels
IP44 enclosure provides robust protection against splashing seawater and dust
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation in varied climates
Sealed‑for‑life or greasable bearing designs reduce routine maintenance intervals
Integrated UNITROL 1000 series AVR delivers precise voltage, frequency and over/under‑excitation protection

Weaknesses

IP44 rating does not protect against full immersion; additional shielding may be required in heavy spray zones
Physical size and weight are significant for vessels with limited machinery space
Insulation (VPI H‑class) is sensitive to moisture ingress; requires regular megger and PD testing
Altitude limitation of 1 000 m, although rarely an issue at sea, restricts use on high‑altitude inland installations
Initial capital cost higher than lower‑rated generators

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierCruise linerOffshore supply vesselNaval auxiliary / support ship

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL classification approvalABS class approvalLloyd's Register certification

Decision Guide: Choose if you need a reliable 1.4 MVA auxiliary generator for large vessels, require flexible cooling and low‑maintenance bearings, and can accommodate the IP44 enclosure. Avoid if space or weight constraints are critical, higher ingress protection (IP66/67) is mandatory, or the vessel operates in environments with extreme moisture that exceed routine insulation monitoring capabilities.

Use Cases: Typically installed as a main auxiliary generator on large merchant ships to supply hotel load and emergency power, or as a dedicated generator for dynamic positioning systems on offshore vessels. It also serves as a standby unit on cruise ships where redundancy and rapid voltage regulation are essential.

Manufacturer Datasheet

Datasheet

AMG 1400-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.4 MVA) in a compact LV frame suitable for shipboard installation
Robust IP55 sealed enclosure protects against salt spray and dust
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Flexible cooling options (dual axial fans with optional water‑cooling) for varied climate zones
Integrated ABB UNITROL or GEN AVR series offering precise voltage regulation and protection functions

Weaknesses

Large physical footprint and weight compared with smaller modular generators
Requires skilled personnel for VPI insulation inspection and bearing maintenance
Fixed 690 V output may need step‑up transformers for vessels standardising on higher bus voltages
Air‑cooling performance can be limited in very hot, high‑humidity environments without water‑cooling retrofit
Higher capital cost relative to lower‑rated or non‑ABB alternatives

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierCruise linerOffshore supply vesselNaval auxiliary ship

Certifications: DNV GL approvalABS classificationLR (Lloyd's Register) certificationIEC 60034‑18‑32 insulation ageing standardIEEE Std 117‑1974

Decision Guide: Choose if you need a proven, high‑output LV generator with strong environmental protection and flexible cooling for large commercial or offshore vessels. Avoid if space, weight, or the requirement for higher bus voltage (e.g., >10 kV) make a smaller or HV unit more appropriate.

Use Cases: Typically installed as main auxiliary generators on large tankers, container ships and cruise vessels to supply hotel loads, emergency power, and support dynamic positioning systems. Also used in offshore platforms where robust, low‑voltage generation with high reliability is required.

Manufacturer Datasheet

Datasheet

AMG 1400-690V-60Hz-IP23

· synchronous marine generator

Power (kVA)

1400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1.4 MVA) suitable for large auxiliary power plants
Robust VPI vacuum pressure impregnation insulation (Class H) gives long life in humid marine environments
Dual cooling options (air‑axial fans or water‑cooled) allow flexible installation
Sealed‑for‑life bearing design on frames <400 reduces routine lubrication needs
Integrated UNITROL AVR series provides precise voltage regulation and overload protection

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; not suitable for direct exposure to heavy spray or immersion
Physical footprint is large compared to compact diesel generators of similar power
Requires skilled personnel for insulation testing and bearing inspection during maintenance
Initial capital cost is higher than lower‑rated alternatives
Cooling performance depends on unobstructed airflow; fouling can quickly degrade efficiency

Typical Vessels: Very Large Crude Carrier (VLCC)Ultra‑Large Container Vessel (ULCV)Cruise ShipOffshore Supply Vessel (OSV)Floating Production Storage and Offloading unit (FPSO)

Certifications: DNV GL Marine ClassificationABS Marine ClassificationIEC 60034‑18‑32 insulation ageing standardIEEE Std 117‑1974

Decision Guide: Choose if: the vessel needs a high‑capacity, modular LV generator with flexible cooling and proven long‑life insulation; space for a larger footprint is available; classification societies require DNV/ABS approval. Avoid if: the installation area is exposed to heavy spray or immersion (higher IP rating required), maintenance crew lack expertise in VPI insulated generators, or budget constraints favor smaller diesel sets.

Use Cases: Typically installed as the main auxiliary generator on large tankers, container ships and cruise liners to supply hotel loads, cargo handling equipment and emergency power. Also used on offshore platforms where reliable, high‑output power with robust insulation is critical.

Manufacturer Datasheet

Datasheet

AMG 1400-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

Class H vacuum‑pressure‑impregnated (VPI) stator/rotor provides excellent moisture resistance and long insulation life.
IP44 enclosure protects against splashing water and salt spray, suitable for harsh maritime environments.
Sealed‑for‑life bearing design (frame <400) reduces routine maintenance intervals.
Dual axial fans allow flexible air or water cooling to maintain temperature in a wide ambient range (-20 °C to +45 °C).
Integrated with ABB UNITROL AVR series for precise voltage regulation and built‑in under/over‑excitation protection.

Weaknesses

IP44 rating does not protect against total dust ingress; additional sealing may be required in dusty compartments.
Physical size and weight are relatively large for a 1.4 MVA unit, impacting installation space on smaller vessels.
Requires regular insulation resistance and partial‑discharge testing to monitor VPI condition in salty environments.
Cooling performance can be limited if airflow is obstructed; water‑cooled variant adds complexity and maintenance.
Not suitable for high‑voltage (>11 kV) shipboard distribution without step‑up transformers.

Typical Vessels: Container shipsCrude oil tankersBulk carriersCruise linersOffshore supply vessels

Certifications: IEC 60034-18-32 (insulation ageing)IEEE 117‑1974Classified by major societies (ABS, DNV GL, LR) for marine auxiliary power

Decision Guide: Choose if you need a reliable 1.4 MVA low‑voltage generator with proven VPI insulation, sealed bearings and ABB AVR integration for large merchant or offshore vessels operating in salty, humid climates. Avoid if the installation space is limited, higher voltage generation is required, or dust‑tight protection beyond IP44 is mandatory.

Use Cases: Typically installed as a main auxiliary generator on large cargo ships and cruise vessels to supply shipboard electrical loads, support emergency power systems, and provide shore‑power capability when docked. Also used on offshore platforms where robust, low‑maintenance generators are essential.

Manufacturer Datasheet

Datasheet

AMG 1400-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.4 MVA) in a compact LV frame (380‑690 V)
IP55 sealed enclosure protects against dust, water jets and salt spray
Class H insulation allows operation up to 180 °C, suitable for hot climates
Flexible cooling options – air or water – to match vessel installation constraints
Integrated ABB UNITROL AVR series provides precise voltage regulation and protection

Weaknesses

Large physical footprint and weight typical of frame 400‑630 units
Requires regular insulation monitoring (megger, tan‑delta) in marine humidity
Higher upfront capital cost compared with smaller or lower‑spec generators
Maintenance demands skilled personnel for VPI‑type winding inspection and bearing servicing
Cooling system must be kept free of salt deposits; otherwise performance degrades

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG carrierNaval auxiliary

Decision Guide: Choose if you need a reliable 1.4 MVA LV generator with strong environmental protection, high temperature capability and flexible cooling for large merchant or offshore vessels. Avoid if space, weight or budget constraints are critical, or if a smaller auxiliary set would meet the vessel’s power demand.

Use Cases: Commonly installed as the main auxiliary generator on large commercial ships to supply hotel loads, cargo handling equipment and emergency power; also used as standby generators on offshore platforms where robust protection against harsh marine conditions is required.

Manufacturer Datasheet

Datasheet

AMG 1600-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1600 kVA) at low voltage simplifies integration with standard ship bus systems.
H‑class vacuum pressure impregnated (VPI) insulation provides excellent moisture resistance and long service life.
Sealed‑for‑life or easily re‑greasable bearings reduce routine maintenance intervals.
Dual axial fans allow flexible air‑cooling, with optional water‑cooling for hot climates.
Integrated UNITROL AVR offers precise voltage regulation with under/over‑excitation protection.

Weaknesses

IP23 rating protects only against solid objects >12.5 mm; additional sealing may be required in very harsh salt‑spray areas.
400 V output may necessitate step‑up transformers for vessels that operate on higher bus voltages.
Physical footprint and weight are sizable for small craft or retrofits with limited engine‑room space.
Cooling performance depends on ambient airflow; blockage or fouling of fans can lead to overheating.
Larger frame sizes (>400) require re‑greasable bearings, adding periodic maintenance tasks.

Typical Vessels: Container shipBulk carrierTanker (medium size)Cruise ferryOffshore supply vessel

Decision Guide: Choose if you need a rugged 1.6 MVA auxiliary generator with low‑maintenance bearings, proven H‑class insulation and flexible cooling for medium‑to‑large vessels operating at 400 V. Avoid if the ship requires higher voltage output, has severe space constraints, or operates in environments where an IP23 enclosure is insufficient without additional protection.

Use Cases: Provides primary auxiliary power for hotel loads, cargo handling equipment, and emergency generators on commercial ships; also used as a standby generator for critical systems and can be coupled with shore‑power converters on vessels equipped for port electrification.

Manufacturer Datasheet

Datasheet

AMG 1600-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1 600 kVA) in a compact low‑voltage frame suitable for large auxiliary sets.
VPI insulation class H/F provides excellent thermal endurance and moisture resistance in salty environments.
Dual axial fans with optional water‑cooling give flexible cooling for tropical or high‑load conditions.
Integrated UNITROL 1000 AVR offers automatic voltage regulation, under/over‑excitation protection and easy tuning.
Sealed‑for‑life bearing option (frames <400 kVA) reduces maintenance intervals.

Weaknesses

IP44 rating only protects against splashing; not suitable for fully exposed wet locations without additional shielding.
Physical footprint is larger than newer high‑speed diesel generators of comparable rating.
Requires regular insulation resistance and partial discharge monitoring in salty marine atmosphere.
Bearing greasing required on larger frames (≥450 kVA) adds maintenance workload.
Limited to 400 V system; vessels standardising on 690 V or higher need step‑down equipment.

Typical Vessels: Container shipCrude oil tankerProduct tankerLNG carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven 1.6 MVA, 400 V synchronous generator with robust VPI H‑class insulation, integrated AVR and flexible cooling for large merchant or offshore vessels operating in tropical/salty environments. Avoid if: the installation space is severely constrained, higher voltage (≥690 V) is required, you demand a fully watertight enclosure (IP66+) or want minimal periodic insulation testing.

Use Cases: Main auxiliary power plant on deep‑sea tankers and container ships, emergency generator set for cruise vessels, shore‑power conversion units on offshore supply ships, and as part of redundant power arrangements on LNG carriers where stable voltage and rapid load response are critical.

Manufacturer Datasheet

Datasheet

AMG 1600-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) in a compact LV frame (400–630)
IP55 sealed enclosure resists salt spray and moisture
Class‑H VPI insulation provides excellent thermal ageing resistance
Flexible cooling – double axial fans with optional water‑air hybrid
Integrated UNITROL/GEN AVR options for precise voltage regulation

Weaknesses

Fixed 50 Hz frequency limits use on vessels requiring 60 Hz systems
Large physical footprint and weight compared with diesel alternators of similar rating
Requires rigorous moisture‑control inspections due to high insulation class
Maintenance of bearing lubrication (sealed‑for‑life or re‑greasable) adds complexity

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vesselsRo‑Ro ferries

Certifications: DNV GLABSLloyd's Register

Decision Guide: Choose if you need a reliable 1.6 MVA auxiliary power source for large merchant or offshore vessels, require robust protection against marine corrosion, and operate on a 50 Hz system. Avoid if vessel space is severely constrained, the installation must run at 60 Hz, or you prefer a lighter diesel‑alternator solution with lower upfront weight.

Use Cases: Commonly installed as main auxiliary generators on tankers and container ships to supply hotel load and emergency power; also used on cruise vessels for propulsion‑support electricity and on offshore supply ships where high temperature tolerance and corrosion resistance are critical.

Manufacturer Datasheet

Datasheet

AMG 1600-400V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1 600 kVA in a single unit, reducing the number of generators needed.
Robust VPI (vacuum pressure impregnation) insulation class H provides excellent moisture and thermal resistance.
Dual cooling options (axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C.
Integrated UNITROL AVR (1000 series) offers precise voltage regulation and built‑in under/over‑excitation limiters.
Sealed‑for‑life bearing option for frames <400 simplifies maintenance.

Weaknesses

IP23 enclosure protects against splash only; not suitable for heavily dusty or spray‑prone compartments.
Large physical footprint (frame 400–630) may require significant engine‑room space and structural support.
Requires regular insulation resistance testing (Megger, tan‑delta) due to marine humidity exposure.
Higher initial capital cost compared with lower‑rated generators or diesel‑alternator sets.
Only 60 Hz design; not a dual‑frequency unit for vessels that operate on both 50 Hz and 60 Hz systems.

Typical Vessels: Container shipCrude oil tankerProduct tankerLNG carrierCruise linerOffshore supply vessel

Certifications: DNV GLABSLR (Lloyd's Register)

Decision Guide: Choose if: you need a single, high‑output auxiliary generator (>1 MW) with proven reliability, integrated AVR and dual cooling for large ocean‑going vessels that have sufficient engine‑room space. Avoid if: the installation area is constrained, a higher IP rating (e.g., IP54) is required, or the vessel operates on 50 Hz only.

Use Cases: Typically installed as an auxiliary power source for hotel load and emergency generation on large commercial ships; also used in redundancy schemes where one high‑capacity generator can replace two smaller units.

Manufacturer Datasheet

Datasheet

AMG 1600-400V-60Hz-IP44

· marine synchronous generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) in a compact LV frame suitable for auxiliary plant layouts.
Robust VPI H‑class insulation system with excellent moisture resistance, extending service life in salty atmospheres.
Dual axial fans with optional water‑cooling provide flexible cooling for temperatures from –20 °C to +45 °C.
Integrated UNITROL AVR (U/Hz, UEL/OEL) delivers precise voltage regulation and built‑in protection limits.
Sealed‑for‑life bearing option reduces routine lubrication tasks and downtime.

Weaknesses

IP44 rating protects against splashing only; not suitable for areas with direct water jet exposure.
Physical size and weight are significant, requiring dedicated space and reinforced mounting structures.
Maintenance of VPI insulation and AVR units demands specialized training and diagnostic equipment.
Standard output voltage (400 V) may require step‑up transformers on vessels that operate at higher bus voltages.
Initial capital cost is higher than lower‑rated generators of comparable size.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselFPSO / offshore platform

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL approved marine generator

Decision Guide: Choose if the vessel needs a reliable 1.6 MVA auxiliary power source, operates in high humidity/salt environments, and can accommodate the unit’s footprint and weight. Avoid if space is extremely limited, higher bus voltages are required without step‑up gear, or only low‑cost, low‑power generators are justified.

Use Cases: Typically installed as a main auxiliary generator on large merchant ships to supply hotel loads, cargo handling equipment, and emergency power; also used on offshore platforms for continuous plant power and dynamic positioning support where robust insulation and flexible cooling are critical.

Manufacturer Datasheet

Datasheet

AMG 1600-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) suitable for large vessels and offshore platforms
Robust IP55 housing protects against salt spray and dust
Class‑H insulation allows operation up to +180 °C ambient temperature
Dual cooling options (air‑flow or water‑cooled) give flexibility for different installation layouts
Integrated UNITROL AVR with under/over‑excitation limiters ensures stable voltage regulation

Weaknesses

Large physical footprint and weight typical of high‑capacity generators (requires ample engine room space)
Complex VPI insulation system demands regular megger and partial‑discharge testing
Cooling system must be kept clean; fouling can quickly degrade performance
Requires skilled personnel for bearing greasing/re‑greasing and AVR maintenance
Standard output voltage 400 V may need step‑up transformation for vessels that operate at higher bus voltages

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsOffshore supply vesselsFloating production storage and offloading units (FPSOs)

Decision Guide: Choose if you need a proven, high‑power generator with strong environmental protection and flexible cooling for large commercial or offshore vessels. Avoid if space is severely limited, the crew lacks expertise in VPI insulation maintenance, or a lower‑voltage, lighter unit would meet the power requirement.

Use Cases: Installed as the main auxiliary power source on tankers, cruise liners and FPSOs where continuous 1.6 MVA output is required for propulsion auxiliaries, hotel loads, cargo handling equipment and safety systems. Frequently paired with ABB’s UNITROL AVR and integrated into shipboard automation via the ABB Ability platform.

Manufacturer Datasheet

Datasheet

AMG 1600-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MW) in a compact LV frame suitable for medium‑size vessels
VPI H‑class insulation provides excellent moisture resistance and long life in harsh marine environments
Dual axial fan cooling allows flexible air‑ or water‑cooled operation, improving thermal performance
Integrated UNITROL AVR (1000 series) with UEL/OEL limits ensures stable voltage regulation under load changes
Sealed‑for‑life bearing options reduce maintenance intervals

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for heavily splashed or flooded compartments
Large physical footprint and weight compared with newer compact generator sets
Requires regular insulation resistance (Megger) testing and partial discharge monitoring to maintain H‑class condition
Cooling performance depends on clean fan blades and unobstructed airflow; fouling can quickly degrade efficiency
Standard bearing lubrication may need periodic greasing for frames ≥450, increasing service effort

Typical Vessels: TankerBulk carrierContainer shipCruise liner (mid‑size)Offshore supply vessel

Certifications: IMO D-2IEC 60034-18-32 (insulation ageing compliance)IEEE Std 117‑1974

Decision Guide: Choose if you need a proven, high‑output auxiliary generator with robust H‑class VPI insulation and flexible cooling for medium‑size commercial vessels. Avoid if the installation area requires higher ingress protection (IP55+) or if space/weight constraints favor newer compact modular units.

Use Cases: Typically installed as the main auxiliary power source on tankers, bulk carriers and container ships to supply ship service loads and emergency power. Also used on cruise ships for hotel services and on offshore supply vessels where reliable voltage regulation under variable load is critical.

Manufacturer Datasheet

Datasheet

AMG 1600-440V-50Hz-IP44

· synchronous marine generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) in a compact LV frame (400–630) suitable for main‑auxiliary sets
Class H VPI insulation provides excellent moisture and thermal resistance for harsh sea conditions
Dual axial fans allow flexible air or water cooling, extending operating temperature range (-20 °C to +45 °C)
ABB Ability LEAP condition monitoring integration enables predictive maintenance
Globally recognised ABB service network and spare‑parts availability

Weaknesses

Large physical footprint and weight require substantial engine‑room space
IP44 rating may need additional shielding in spray‑zone or high‑salinity environments
Designed for 50 Hz only; vessels operating on 60 Hz would need a different model
Requires skilled personnel for VPI insulation testing and bearing greasing procedures
Higher capital cost compared with lower‑rated generators

Typical Vessels: Crude oil tankerContainer shipCruise linerOffshore supply vessel (OSV)Dynamic positioning (DP) vessel

Certifications: DNV GLABS

Decision Guide: Choose if you need a robust 1.6 MVA auxiliary generator with proven VPI insulation, integrated condition monitoring and ABB global support for large vessels operating at 50 Hz. Avoid if vessel space is limited, the installation environment exceeds IP44 exposure, or a 60 Hz system is required.

Use Cases: Typically installed as part of the main‑auxiliary power plant on large tankers, container ships and cruise liners to supply hotel loads, cargo handling equipment and emergency systems. Also used on offshore platforms and DP vessels where high reliability and remote monitoring are critical.

Manufacturer Datasheet

Datasheet

AMG 1600-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density – 1.6 MVA in a single frame suitable for large auxiliary power plants.
IP55 sealed enclosure protects against salt spray, dust and splashing water, extending service intervals.
VPI (vacuum pressure impregnation) insulation class H provides excellent moisture resistance and thermal ageing performance.
Dual axial fans with optional water‑cooling give flexible cooling solutions for ambient temperatures –20 °C to +45 °C.
Sealed‑for‑life bearings on frames <400 reduce maintenance compared with greased units.

Weaknesses

Fixed 50 Hz frequency limits use on vessels standardized on 60 Hz auxiliary systems.
Physical size and weight are larger than low‑power modular generators, requiring ample engine‑room space.
Standard bearing design (non‑regreaseable) on frames ≥450 may need periodic greasing in high‑vibration applications.
Requires dedicated AVR (UNITROL 1000 or GEN series); failure of the AVR can affect voltage regulation across the whole plant.
Cooling performance depends on clean airflow; fouling of axial fans in salty environments increases temperature rise.

Typical Vessels: Crude oil tankerLNG carrierContainer ship (large class)Cruise linerOffshore supply vessel

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974 (generator safety)ISO 8528‑5 (generator set performance)DNV GL Type Approval for marine generatorsABS Marine Certification

Decision Guide: Choose if: you need a reliable 1.6 MVA auxiliary power source, operate in a high‑salinity environment, and the vessel is standardized on 50 Hz. Avoid if: space is at a premium, the ship uses a 60 Hz electrical system, or you require a low‑maintenance regreaseable bearing design for very high vibration zones.

Use Cases: Typically installed as part of the main auxiliary power plant on large ocean‑going vessels where continuous, high‑capacity electricity is required for propulsion auxiliaries, hotel loads and cargo handling equipment. The generator’s robust enclosure and VPI insulation make it suitable for tropical routes with heavy salt exposure and for ships that demand long intervals between major overhauls.

Manufacturer Datasheet

Datasheet

AMG 1600-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1.6 MVA) suitable for large auxiliary power plants
Class H VPI insulated windings provide excellent thermal endurance
Dual axial fans with optional water‑cooling give flexible cooling options
Integrated UNITROL AVR series offers precise voltage regulation and protection limits
Modular frame sizes (LV 400‑630) simplify installation on a variety of vessel layouts

Weaknesses

IP23 enclosure is only splash‑proof; not suitable for harshly exposed deck locations requiring higher ingress protection
Large physical footprint compared with compact diesel‑generator sets of similar rating
Bearings may require periodic greasing (non‑sealed frames) adding maintenance workload
Insulation performance can degrade if moisture penetrates, demanding strict humidity control during operation and storage
Requires skilled personnel for AVR tuning and partial‑discharge monitoring

Typical Vessels: Cruise shipContainer vesselTankerBulk carrierOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if you need a proven, high‑power synchronous generator with flexible cooling and integrated AVR for main or emergency auxiliary power on large commercial vessels. Avoid if the installation area demands higher ingress protection (IP55+), space is extremely limited, or you prefer a fully sealed, low‑maintenance diesel genset.

Use Cases: Typically installed in the engine room as part of the ship's auxiliary power plant to supply hotel loads, cargo handling equipment, and emergency generators. Also used for shore‑power conversion systems on cruise ships and large tankers where stable voltage regulation is critical.

Manufacturer Datasheet

Datasheet

AMG 1600-440V-60Hz-IP44

· Marine synchronous generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) in a single unit reduces the number of gensets required
IP44 enclosure and VPI‑impregnated H‑class insulation give strong resistance to moisture, salt and high temperature
Dual axial fans with optional water‑cooling provide flexible cooling for varied climate zones
Integrated UNITROL/GEN AVR series offers precise voltage regulation and overload protection
Standardised frame sizes (LV 400‑630) simplify installation and spare‑parts logistics

Weaknesses

Physical size and weight are substantial; requires dedicated machinery space and heavy‑duty foundations
Maintenance of sealed‑for‑life or greasable bearings demands skilled personnel and regular vibration/temperature monitoring
IP44 rating protects against splashing only – additional sealing may be needed in very wet compartments
Initial capital cost is higher than smaller, modular generator sets
Requires external cooling system integration if water‑cooling is selected

Typical Vessels: Medium‑size tankers (LR2, product carriers)Container ships (up to 8 000 TEU)Bulk carriers (Handymax/Supramax)Cruise vessels and ferriesOffshore supply & support vessels

Decision Guide: Choose if the vessel needs a single, high‑capacity auxiliary generator with proven marine‑grade insulation, can accommodate the unit’s footprint, and values integrated AVR control. Avoid if space is extremely limited, the budget favours multiple smaller gensets, or the operating environment exceeds IP44 protection without additional sealing.

Use Cases: Typically installed as the main auxiliary power source on commercial ships requiring 1‑2 MW of hotel load, emergency power, and propulsion support; also used in offshore platforms where robust, low‑maintenance generators are essential.

Manufacturer Datasheet

Datasheet

AMG 1600-440V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1.6 MVA) suitable for large ship service loads
Robust IP55 sealed enclosure resists salt spray and dust
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Dual axial‑fan cooling allows flexible air or water‑cooled operation
Compatible with ABB UNITROL 1000/GEN AVR families for precise voltage regulation

Weaknesses

Large physical footprint and high weight limit installation in space‑constrained vessels
Requires regular insulation resistance and partial‑discharge testing to manage moisture risk
Maintenance of dual fans and sealed bearings demands skilled personnel
Initial capital cost is higher than lower‑rated generators
Only 60 Hz frequency; not directly suitable for 50 Hz‑only fleets without a converter

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV classification approvalABS class approvalLR (Lloyd’s Register) type approval

Decision Guide: Choose if you need a proven, high‑power (≥1.5 MVA) generator with strong environmental protection for harsh marine conditions and have the space and maintenance capability to support its size and testing regime. Avoid if vessel weight/space budgets are tight, you operate primarily on 50 Hz systems, or you lack access to qualified electrical technicians for periodic insulation diagnostics.

Use Cases: The AMG 1600 is typically installed as a main auxiliary generator on large ocean‑going vessels, providing propulsion support, hotel load power, and emergency supply. It is also used on offshore platforms where reliable high‑capacity power and resistance to salt‑water corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 1600-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) in a compact LV frame suitable for large vessels
Class‑H vacuum pressure impregnation (VPI) insulation provides excellent moisture resistance and long life
Dual cooling options (axial fans with optional water spray) allow operation from –20 °C to +45 °C
Integrated ABB UNITROL or GEN AVR families give precise voltage regulation and built‑in over/under‑excitation protection
Sealed‑for‑life bearing option for frames <400 reduces maintenance intervals

Weaknesses

IP23 rating protects only against solid objects >12.5 mm; no water ingress protection, requiring careful installation in wet areas
Large physical footprint and weight compared with medium‑speed diesel generators of similar rating
Frames ≥450 require greasable bearings and periodic re‑lubrication, increasing maintenance effort
Low‑voltage output (≤690 V) may need step‑up transformers for vessels that standardise on higher distribution voltages
Higher initial capital cost than comparable medium‑speed diesel gensets

Typical Vessels: Crude oil tankersLNG carriersContainer ships (>10 000 TEU)Cruise linersOffshore supply vessels

Decision Guide: Choose if you need a high‑output, low‑voltage auxiliary generator with proven moisture‑resistant insulation and flexible cooling for large commercial or offshore vessels. Avoid if space is extremely limited, water‑tight enclosure (IP≥54) is required, or the ship’s electrical system is based on higher distribution voltages that would make a step‑up transformer unavoidable.

Use Cases: Main auxiliary power plant supplying hotel loads and emergency generation on large tankers and cruise ships; also used as part of redundant generator sets on offshore support vessels where reliability in harsh marine climates is critical.

Manufacturer Datasheet

Datasheet

AMG 1600-690V-50Hz-IP44

· synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) suitable for large vessel auxiliaries
Marine‑grade VPI insulated windings (Class H) for long life in humid, salty environments
Dual axial fan cooling with optional water‑cooling provides flexibility across climate zones
Sealed‑for‑life bearings on frames <400 and greasable options for larger frames reduce maintenance intervals
Integrated UNITROL or GEN AVR series offers precise voltage regulation and overload protection

Weaknesses

IP44 enclosure only protects against splashing water; not dust‑tight, requiring careful placement in harsh spray zones
Physical size and weight are substantial, limiting installation on smaller vessels
Frames ≥450 require periodic bearing re‑greasing, adding maintenance effort
Fixed 690 V output may need step‑up transformers for ships standardising on higher bus voltages
Complex AVR integration can increase commissioning time and spare‑part inventory

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>8,000 TEU)Cruise linerOffshore supply vesselLNG carrierNaval auxiliary / support ship

Certifications: DNV GL ClassABS ClassIEC 60034-18-32 (insulation ageing) IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable >1 MW auxiliary generator for large commercial or offshore vessels, require robust marine insulation and flexible cooling, and can accommodate the physical footprint. Avoid if vessel size is limited, you prefer higher bus voltage without transformers, or want a low‑maintenance sealed unit with minimal bearing service.

Use Cases: Typically installed as the main emergency/auxiliary power source on large merchant ships, providing electricity for hotel loads, cargo handling equipment, and safety systems; also used in hybrid propulsion schemes to supply grid power while diesel engines run at optimal load.

Manufacturer Datasheet

Datasheet

AMG 1600-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) at standard 690 V three‑phase voltage
IP55 enclosure provides robust protection against dust and water spray in harsh marine environments
H‑class VPI insulation offers excellent thermal endurance and moisture resistance
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C
Integrated UNITROL/GEN AVR series provides precise voltage regulation and overload protection

Weaknesses

Large physical footprint and weight require substantial installation space and structural support
Requires regular insulation resistance testing and vibration monitoring due to moisture‑sensitive windings
Complex cooling system may need additional plumbing for water‑cooled variants
Maintenance of sealed‑for‑life or greased bearings demands skilled personnel and scheduled downtime
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsCruise LinersOffshore Supply VesselsLNG/LPG carriers

Decision Guide: Choose if you need a reliable 1.6 MVA auxiliary power source for large vessels, require IP55 protection and H‑class insulation, and have the installation space for a high‑capacity generator. Avoid if vessel size or budget limits preclude a large footprint, or if only low‑power emergency generation is required.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and propulsion auxiliaries on deep‑sea tankers, container ships, and cruise vessels; also used in offshore platforms where high continuous power and robust environmental protection are essential.

Manufacturer Datasheet

Datasheet

AMG 1600-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MW) in a single unit reduces the number of generators needed on large vessels.
Class H VPI insulated windings provide excellent thermal endurance for continuous operation up to +180 °C.
Dual axial‑fan cooling allows flexible air or water‑cooled configurations, suitable for varied climate zones.
Integrated ABB UNITROL AVR series (1000/GEN) offers precise voltage regulation and built‑in under/over‑excitation protection.
Sealed‑for‑life bearing option (frames <400) minimizes maintenance intervals in harsh marine environments.

Weaknesses

IP23 rating protects only against solid objects >12.5 mm; not dust‑tight or fully splash‑proof, requiring careful placement away from direct spray.
Large physical footprint and weight may limit installation on vessels with constrained engine‑room space.
Moisture ingress can degrade insulation; regular IR testing and humidity control are mandatory.
Dual‑fan system can be less efficient in very high ambient temperatures compared to water‑cooled dedicated units.
Requires compatible ABB power management (AVR, monitoring) for full performance; retro‑fit on non‑ABB systems may add complexity.

Typical Vessels: Crude oil tankerContainer shipCruise linerLNG carrierOffshore supply vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL class certification

Decision Guide: Choose if you need a reliable 1.5–2 MW auxiliary power source with robust thermal insulation, integrated ABB AVR control and the flexibility of air or water cooling on large commercial vessels. Avoid if space is at a premium, a higher voltage (≥11 kV) system is required, or a fully splash‑proof IP66 enclosure is mandatory for extreme spray environments.

Use Cases: Main auxiliary power generation for hotel loads on cruise ships, emergency and standby power on tankers and bulk carriers, support of cargo handling equipment on container vessels, and as part of redundant power plants on offshore supply platforms where high reliability and easy integration with ABB electrical distribution systems are valued.

Manufacturer Datasheet

Datasheet

AMG 1600-690V-60Hz-IP44

· synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) in a compact LV frame suitable for large vessels
Class H vacuum pressure impregnated (VPI) stator/rotor insulation gives excellent moisture resistance and long life
IP44 enclosure protects against salt spray while allowing easy access for maintenance
Flexible cooling options – dual axial fans with optional water‑cooling – to suit varied climate zones
Integrated UNITROL or GEN AVR series provides precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Physical size and weight are substantial; installation requires significant space and structural support
Frames ≥450 kW need greasable bearings, increasing routine maintenance compared with sealed‑for‑life units
IP44 rating is not fully watertight for heavy spray zones (requires additional shielding in D‑zone)
Only 690 V output; higher shipboard voltages require step‑up transformers, adding cost and losses
Initial capital expense is high relative to smaller auxiliary generators

Typical Vessels: Crude oil tankerContainer vesselBulk carrierLNG/LPG carrierOffshore supply vesselCruise shipNaval auxiliary ship

Certifications: DNV GLABSLR (Lloyd's Register)IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if the vessel requires a reliable 1.6 MVA auxiliary power source, operates in harsh marine environments, and can accommodate the generator’s footprint and cooling system. Avoid if space is at a premium, the ship demands higher direct voltage output, or maintenance resources for greasable bearings are limited.

Use Cases: The AMG 1600‑690V is typically installed as the main auxiliary generator on large merchant ships to supply hotel loads, cargo handling equipment and emergency power. It also serves as a standby unit for propulsion support on DP‑class vessels and can be part of redundant power arrangements on cruise liners and offshore platforms.

Manufacturer Datasheet

Datasheet

AMG 1600-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.6 MVA) in a compact LV frame (400–630) suitable for large vessels
Robust Class‑H VPI insulation offering excellent thermal and moisture resistance
IP55 sealed enclosure protects against salt spray, dust and splashing water
Dual axial fans provide flexible air‑ or water‑cooled operation over –20 °C to +45 °C
Complies with IEC 60034‑18‑32, IEEE Std 117 and major classification societies

Weaknesses

Physical size and weight are significant; installation requires ample engine‑room space
Bearings on frames <400 are sealed‑for‑life only; larger frames need periodic greasing
Sensitive to moisture ingress – insulation resistance must be monitored regularly
Requires dedicated cooling system (air or water) and associated ducting/piping
Higher initial cost compared with lower‑power diesel generators

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vesselNaval auxiliary

Certifications: DNVGL Marine ClassificationABS (American Bureau of Shipping)LR (Lloyd's Register)IEC 60034‑18‑32 insulation ageing standardIEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 1.6 MVA auxiliary power source on a large vessel, require IP55 protection for harsh marine conditions, and have sufficient engine‑room volume for the generator and its cooling system. Avoid if space is limited, the required voltage is lower than 690 V, or a low‑cost, low‑power diesel set would meet the ship’s needs.

Use Cases: Typically installed as a main auxiliary generator on large commercial ships to supply propulsion auxiliaries, hotel loads and emergency power; also used on offshore platforms and naval support vessels where high reliability and resistance to salt‑water corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 1800-400V-50Hz-IP23

· synchronous marine generator

Power (kVA)

1800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.8 MVA) in a compact LV frame suitable for medium‑voltage shipboard distribution
VPI H‑class insulation provides excellent moisture resistance and long service life in salty environments
Integrated UNITROL AVR offers precise voltage regulation, under/over‑excitation protection and easy tuning
Dual cooling options (axial fans + optional water jacket) allow adaptation to tropical or temperate climates
Sealed‑for‑life bearing design reduces routine lubrication tasks and extends maintenance intervals

Weaknesses

IP23 enclosure protects only against solid objects >12 mm and spray; not fully watertight for heavy splashing zones
Physical size and weight are significant, limiting installation on smaller vessels or confined engine rooms
Requires skilled personnel for VPI insulation testing and periodic partial‑discharge monitoring
Noise level of the axial fans can be high unless additional acoustic treatment is applied
Initial capital cost is higher than many competing low‑cost generators of similar rating

Typical Vessels: Container ship (≥8 000 TEU)Cruise linerLNG carrierOffshore supply vesselNaval auxiliary / replenishment ship

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974ABS class approval for marine generatorsDNV GL classification approval

Decision Guide: Choose if you need a proven, high‑output auxiliary generator with robust H‑class insulation, flexible cooling and ABB’s global service network – especially on large vessels where space and weight are less restrictive. Avoid if the installation area is confined, requires a fully watertight (IP55+) enclosure, or if budget constraints favour lower‑cost alternatives.

Use Cases: Typically installed as a main hotel‑load generator or emergency power source on large commercial ships and offshore platforms, providing continuous 400 V three‑phase supply for lighting, HVAC, cargo handling equipment and critical safety systems. The dual cooling capability makes it suitable for both tropical routes (water‑cooled) and temperate climates (air‑cooled).

Manufacturer Datasheet

Datasheet

AMG 1800-400V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.8 MVA) in a compact LV frame suitable for 400 V shipboard systems
Vacuum pressure impregnated (VPI) insulation class H provides excellent moisture and thermal resistance
Dual axial fan design allows air‑ or water‑cooled operation, enhancing flexibility in installation
IP44 enclosure protects against splashing and dust, meeting harsh marine environment requirements
Integrated UNITROL/GEN AVR options with UEL/OEL limiters give precise voltage regulation

Weaknesses

Physical size and weight are significant; requires ample engine‑room space
IP44 rating does not protect against full immersion, limiting placement in areas prone to flooding
Cooling performance depends on unobstructed airflow; fouling of fans can reduce efficiency
Maintenance of VPI insulation demands regular moisture and partial‑discharge monitoring
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL classification approvalABS class approval

Decision Guide: Choose if you need a high‑capacity (≈1.8 MVA) LV generator with robust moisture‑resistant insulation and flexible cooling for large merchant or offshore vessels. Avoid if space is severely constrained, higher voltage output (>400 V) is required without step‑up gear, or the installation area cannot guarantee clean airflow for the fans.

Use Cases: Typically installed as the main auxiliary generator set on large cargo carriers and cruise ships to supply propulsion auxiliaries, hotel loads, and emergency power. Also used in offshore platforms where reliable, high‑output generation at 400 V is required and environmental exposure demands durable sealing.

Manufacturer Datasheet

Datasheet

AMG 1800-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous power output (1800 kVA) suitable for large ship auxiliaries
Robust IP55 enclosure resists dust and water ingress in harsh marine environments
VPI H‑class insulation provides excellent thermal endurance and moisture resistance
Modular frame sizes (400–630) allow flexible installation layouts
Integrated double‑axial fan cooling with optional water‑cooling for reliable temperature control

Weaknesses

Large physical footprint may limit placement on vessels with tight engine‑room space
Sealed‑for‑life bearings reduce routine maintenance but require specialized handling if replacement is needed
Higher capital cost compared with lower‑rated or non‑ABB alternatives
Fixed 50 Hz frequency limits use on ships requiring dual‑frequency capability
Complex VPI insulation system demands thorough testing and qualified personnel for condition monitoring

Typical Vessels: Crude oil tankersContainer shipsBulk carriersLNG/LPG carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a reliable, high‑power (≥1500 kVA) auxiliary generator with strong environmental protection and ABB’s integrated AVR system for large ocean‑going vessels. Avoid if space is severely constrained, dual‑frequency operation is required, or budget constraints favour lower‑cost generators.

Use Cases: Primary auxiliary power generation on large commercial ships, emergency standby power, and as a backup source for shaft generators in offshore support vessels where continuous high output and robust protection against salt spray are critical.

Manufacturer Datasheet

Datasheet

AMG 1800-400V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1.8 MVA in a compact LV frame (400‑630) suitable for medium‑large vessels
VPI (vacuum pressure impregnation) H‑class insulation provides excellent moisture resistance and long life
Sealed‑for‑life bearing option reduces routine maintenance on the lower frames
Dual cooling capability (axial fans with optional water spray) allows operation in a wide ambient temperature range (-20 °C to +45 °C)
ABB global service network and integrated UNITROL AVR series simplify commissioning and field support

Weaknesses

IP23 rating protects only against solid objects >12.5 mm; no protection against water spray or immersion
Limited to low‑voltage (400 V) output – additional step‑up transformers are required for high‑voltage ship systems
Large physical footprint compared with newer compact permanent‑magnet generators of similar rating
Moisture ingress can still degrade insulation; regular IR and partial‑discharge testing is mandatory
Bearing lubrication (when not sealed‑for‑life) requires periodic greasing and monitoring

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vesselNaval auxiliary ship

Certifications: DNV GLABSLloyd's RegisterIEC 60034‑18‑32 compliance

Decision Guide: Choose if you need a proven 1.8 MVA low‑voltage generator with robust H‑class insulation, flexible cooling and extensive ABB after‑sales support for medium to large merchant vessels. Avoid if the installation requires higher voltage output (≥10 kV), IP65 protection for harsh deck environments, or the smallest possible footprint for space‑constrained platforms.

Use Cases: The AMG 1800 is typically installed as a main auxiliary generator on large commercial ships to supply propulsion‑auxiliary loads and hotel power, as well as an emergency generator on cruise vessels where reliable, high‑capacity LV power is required. It is also used on offshore support vessels that need flexible cooling for variable ambient conditions.

Manufacturer Datasheet

Datasheet

AMG 1800-400V-60Hz-IP44

· low-voltage synchronous generator

Power (kVA)

1800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1800 kVA in a compact LV frame size (180 series).
IP44 enclosure protects against splashing water and dust, meeting typical shipboard exposure levels.
Insulation class H with VPI vacuum‑pressure‑impregnation provides excellent thermal endurance and moisture resistance.
Sealed‑for‑life bearing design reduces routine lubrication maintenance tasks.
Integrated UNITROL AVR series delivers precise voltage regulation with built‑in over/under excitation limits.

Weaknesses

IP44 rating does not guard against full immersion or heavy dust ingress, requiring additional sealing in very wet compartments.
Dual axial fan cooling can accumulate salt deposits, increasing inspection and cleaning workload.
Physical footprint is larger than comparable high‑voltage generators of similar power, limiting installation flexibility on space‑constrained vessels.
Insulation health monitoring (IR tests, PD analysis) demands skilled personnel and specialized equipment.
Not optimal for ships that standardise on higher distribution voltages such as 660 V.

Typical Vessels: Cruise shipFerryContainer vesselBulk carrierOffshore supply vesselTankers

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose this generator when a ship requires up to 1800 kVA of auxiliary power at 400 V, values robust insulation (class H) and low‑maintenance sealed bearings, and has sufficient engine‑room space for an LV unit. Avoid if the vessel operates on higher distribution voltages, has very limited installation volume, or cannot support regular fan‑cleaning and detailed insulation testing regimes.

Use Cases: Commonly installed as a main auxiliary generator on large merchant ships and cruise vessels to supply hotel loads, cargo handling equipment, and emergency power. Also used in offshore supply vessels where reliable LV power and resistance to marine corrosion are critical.

Manufacturer Datasheet

Datasheet

AMG 1800-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.8 MVA) in a compact LV frame (400–630)
Robust IP55 housing protects against salt spray and dust
Class H VPI insulation provides excellent thermal aging resistance
Flexible cooling options (dual axial fans, optional water‑cooling)
Integrated ABB UNITROL/GEN AVR families with UEL/OEL protection

Weaknesses

Large physical footprint and weight compared with smaller auxiliary sets
Requires specialised VPI insulation testing and regular moisture monitoring
Fixed 60 Hz frequency limits use on vessels standardising on 50 Hz
Maintenance of dual‑fan cooling system can be labour‑intensive in harsh marine environments

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselNaval auxiliary

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL Type Approval

Decision Guide: Choose if you need a high‑capacity, low‑voltage auxiliary generator with proven ABB reliability, robust IP55 protection and Class H insulation for hot or humid climates. Avoid if vessel space is severely limited, the power system operates at 50 Hz only, or you prefer a smaller, lower‑cost unit with less intensive maintenance requirements.

Use Cases: Typically installed as the main auxiliary generator on large merchant vessels to supply ship service loads (lighting, HVAC, cargo handling) and as an emergency power source. Also used in shore‑power conversion plants where a stable 400 V output is required.

Manufacturer Datasheet

Datasheet

AMG 1800-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.8 MVA) suitable for main auxiliary loads on large ships
Robust VPI (vacuum pressure impregnation) insulation class H provides excellent moisture resistance and long life
Flexible cooling options – dual axial fans with optional water‑cooling – adapt to varied ambient conditions
Sealed‑for‑life bearing design for frames <400 reduces maintenance intervals
Compliant with IEC 60034‑18‑32 and IEEE Std 117‑1974, facilitating class society approvals

Weaknesses

IP23 rating offers limited protection against water ingress; additional splash guards may be required in harsh marine environments
Frame size and weight are substantial, impacting installation space on smaller vessels
Only 50 Hz frequency – not directly compatible with vessels standardized on 60 Hz without a converter
Regreaseable bearings (frame 450) still need periodic lubrication checks
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a high‑capacity, low‑maintenance auxiliary generator for large vessels and can accommodate the IP23 enclosure with supplemental splash protection. Avoid on small craft where space, weight, or a higher ingress protection rating are critical, or when 60 Hz operation is required without frequency conversion.

Use Cases: Commonly installed as the main auxiliary power source on large ocean‑going ships to supply hotel loads, cargo handling equipment and emergency generators; also used on offshore platforms where robust insulation and flexible cooling are essential for continuous operation in salty, humid climates.

Manufacturer Datasheet

Datasheet

AMG 1800-440V-50Hz-IP44

· low‑voltage synchronous marine generator

Power (kVA)

1800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (1 800 kVA) in a compact LV frame suitable for medium‑size vessels
Robust IP44 enclosure and class H VPI insulation resist moisture, salt and thermal ageing
Flexible cooling options (dual axial fans with optional water‑cooling) for varied climate zones
Integrated ABB UNITROL AVR provides precise voltage regulation and protection functions
Broad ABB service network and proven compliance with IEC 60034‑18‑32 and IEEE 117 standards

Weaknesses

IP44 rating offers limited dust protection; not suitable for the most severe spray zones without additional shielding
Bearing lubrication may require periodic greasing on frames ≥450, increasing maintenance effort
Fixed 440 V output may need step‑up transformers for vessels that operate at higher distribution voltages
Physical footprint and weight are significant for ships with tight machinery spaces
Performance can degrade if moisture infiltrates the VPI insulation – requires diligent humidity control

Typical Vessels: Cruise shipRo‑Ro ferryOffshore supply vessel (OSV)Container ship (mid‑size, 5–10 kTEU)Naval auxiliary / support ship

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117-1974DNV GL Marine Classification approval

Decision Guide: Choose if you need a proven 1 800 kVA LV generator with flexible cooling, strong corrosion resistance and ABB after‑sales support for medium‑size commercial or offshore vessels. Avoid if the installation requires higher voltage distribution (e.g., >6 kV), ultra‑compact machinery space, or exposure to the most severe spray zones where a higher IP rating is mandatory.

Use Cases: Typically installed as the main auxiliary power source on cruise ships and ferries, as emergency generators on container vessels, or as part of the DP power plant on offshore supply ships where reliable, high‑output LV power and rapid voltage regulation are critical.

Manufacturer Datasheet

Datasheet

AMG 1800-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (1.8 MVA) in a compact LV frame suitable for 400–5000 kVA range
Robust IP55 enclosure protects against salt spray and dust
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Dual axial‑fan cooling allows flexible air or water cooling for varied climates
Integrated UNITROL/GEN AVR options give precise voltage regulation and overload protection

Weaknesses

Fixed 440 V output may require step‑up transformers on vessels that standardise on higher bus voltages
Large physical footprint compared with newer high‑speed generator designs
Requires regular insulation monitoring (Megger, PD) in harsh marine environments
Initial capital cost is higher than lower‑rated generators
Heavy bearing assemblies demand careful handling during installation

Typical Vessels: Container ships (>10 000 TEU)Crude oil and product tankersLNG carriersCruise linersOffshore supply vessels (OSV) with high hotel load

Decision Guide: Choose if you need a proven, high‑output LV generator with strong environmental protection, integrated AVR and flexible cooling for large merchant or offshore vessels. Avoid if the vessel operates on higher bus voltages, has severe space constraints, or budget limits preclude a premium‑class unit.

Use Cases: Main auxiliary power generation for propulsion support, hotel load supply, emergency standby power, and dynamic positioning systems on large commercial ships where reliability and compliance with marine classification standards are critical.

Manufacturer Datasheet

Datasheet

AMG 1800-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.8 MVA) in a compact LV frame (400–630) suitable for large vessels
H‑class insulation and VPI vacuum pressure impregnation give excellent thermal endurance and moisture resistance
Integrated UNITROL AVR provides precise voltage regulation and built‑in under/over‑excitation limiters
Dual cooling options (air‑only or water‑assisted) allow adaptation to varying ambient conditions
Sealed‑for‑life bearings on frames <400 reduce routine lubrication maintenance

Weaknesses

IP23 enclosure only protects against solid objects >12.5 mm; additional sealing may be required in harsh salt‑spray areas
Large physical footprint and weight compared with smaller modular gensets, impacting deck space allocation
Requires regular insulation resistance testing (Megger) due to moisture sensitivity of marine environments
Fixed 60 Hz frequency limits use on vessels that operate on 50 Hz power systems without a converter
Initial capital cost is higher than lower‑rated generators or diesel‑engine integrated sets

Typical Vessels: Cruise shipsContainer vesselsBulk carriersOffshore supply vessels (OSV)LNG carriersRo‑Ro ferries

Certifications: IMO D‑2IEC 60034-18-32 (insulation ageing)ABS / DNV GL class approval for marine generators

Decision Guide: Choose if you need a robust, high‑capacity auxiliary power source with built‑in AVR and flexible cooling on vessels that can accommodate the generator’s size and weight. Avoid if deck space is limited, the vessel operates primarily at 50 Hz, or you prefer a fully sealed (IP66) unit for extreme salt‑water exposure.

Use Cases: Typically installed in the main engine room or dedicated auxiliary power rooms of large commercial ships to supply hotel loads, cargo handling equipment, and emergency power. Frequently paired with medium‑speed diesel engines on cruise liners and container ships where reliable voltage regulation and high thermal capability are critical.

Manufacturer Datasheet

Datasheet

AMG 1800-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.8 MVA) in a compact frame (400–630 series) for medium‑size vessels
VPI (vacuum pressure impregnation) insulation class H provides excellent moisture and corrosion resistance
Integrated UNITROL AVR system offers precise voltage regulation and built‑in under/over‑excitation protection
Dual axial fan cooling with optional water‑cooling gives flexibility for different ambient conditions
Sealed‑for‑life bearing option reduces maintenance intervals

Weaknesses

IP44 rating protects only against splashing water; not suitable for fully immersed installations
Requires external step‑up transformer if ship electrical system operates above 440 V
Large physical footprint and weight may limit installation space on smaller vessels
Moisture ingress can still degrade insulation over time, demanding regular IR testing
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Container shipsBulk carriersCruise linersOffshore supply vesselsLNG carriersNaval auxiliariesLarge Ro‑Ro ferries

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV classification approvalABS class approvalLloyd's Register class approval

Decision Guide: Choose if: you need a reliable 1.8 MVA auxiliary power source for medium‑to‑large vessels, require robust moisture‑resistant insulation, and want integrated AVR control with flexible cooling options. Avoid if: the installation space is limited, the ship’s electrical system runs at higher than 440 V without a transformer, or budget constraints favor lower‑rated generators.

Use Cases: Typically installed as the main auxiliary generator on ocean‑going cargo ships, cruise vessels and offshore support ships to supply hotel loads, navigation equipment, and emergency power. The unit is also used in hybrid propulsion schemes where it can operate alongside diesel engines or fuel cells for peak shaving.

Manufacturer Datasheet

Datasheet

AMG 1800-440V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous power output (1.8 MVA) suitable for large shipboard loads
Robust IP55 sealed enclosure protects against salt spray and dust
Class H VPI insulation provides excellent thermal endurance in harsh marine environments
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C
Integrated ABB UNITROL/GEN AVR series offers precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Large physical footprint and weight require substantial engine room space
Only 60 Hz frequency; vessels standardized on 50 Hz would need additional conversion equipment
Maintenance of VPI insulation and sealed bearings demands specialised testing (megger, PD) and skilled personnel
Higher initial capital cost compared with lower‑rated generators
Fixed voltage rating (440 V) may necessitate step‑up transformers for higher bus voltages

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsOffshore supply vesselsContainer ships over 8 000 TEU

Certifications: IMO D‑2DNVABS

Decision Guide: Choose if the vessel requires a reliable 1.8 MVA auxiliary power source, operates in harsh marine climates, and has sufficient engine‑room volume for an IP55‑rated unit with flexible cooling. Avoid if space is limited, the ship’s electrical system is fixed at 50 Hz, or lower capital expenditure is a priority.

Use Cases: Typically installed as the main auxiliary generator on large tankers, LNG carriers and cruise ships to supply hotel loads, cargo handling equipment and emergency power; also used in hybrid propulsion schemes where high‑power generation is needed alongside diesel engines or fuel cells.

Manufacturer Datasheet

Datasheet

AMG 1800-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

1800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1.8 MW in the LV range, covering many auxiliary power needs.
Robust class H VPI insulation system provides excellent moisture and thermal resistance for marine environments.
Flexible cooling options (air‑only or water‑cooled) allow adaptation to vessel layout and climate.
Integrated ABB UNITROL AVR with under/over‑excitation limiters ensures stable voltage regulation.
Proven ABB reliability and extensive service network worldwide.

Weaknesses

IP23 enclosure offers limited protection against direct water spray; additional sealing may be required in harsh weather zones.
Physical size and weight are substantial for smaller vessels or retrofits with space constraints.
Moisture‑sensitive insulation still requires regular IR testing and partial‑discharge monitoring.
Dual axial fans can generate noticeable noise at full load.
Maintenance of the VPI system and AVR may need specialized ABB service personnel.

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vesselNaval auxiliary

Decision Guide: Choose if you need a reliable 1.8 MW low‑voltage generator with strong insulation and flexible cooling for medium to large vessels operating in typical marine conditions. Avoid if the installation space is limited, the vessel requires a higher IP rating (e.g., IP44+) or if noise constraints are critical.

Use Cases: Provides main auxiliary power for hotel load, emergency generators, DP standby, and propulsion support on large commercial ships and offshore platforms where continuous, stable electricity is essential.

Manufacturer Datasheet

Datasheet

AMG 1800-690V-50Hz-IP44

· marine synchronous generator

Power (kVA)

1800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High output (1.8 MVA) at standard 690 V three‑phase suitable for large vessel auxiliaries
H‑class vacuum pressure impregnation (VPI) insulation provides excellent thermal and moisture resistance
Dual axial fan design with optional water‑cooling gives flexible cooling in varied climates
IP44 enclosure protects against splashing water while allowing easy access for maintenance
Sealed‑for‑life bearing option reduces routine lubrication requirements

Weaknesses

IP44 rating is not fully dust‑tight; unsuitable for locations with heavy spray or immersion risk
Large physical footprint and weight may limit installation in space‑constrained engine rooms
Requires regular insulation resistance and partial‑discharge testing to monitor moisture ingress
Advanced AVR (UNITROL 1000/GEN series) adds complexity to troubleshooting
Maintenance of dual fans and optional water‑cooling circuit demands skilled personnel

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsCruise LinersOffshore Supply VesselsLNG/LPG carriers

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV‑GL approved marine generatorABS Marine Classification

Decision Guide: Choose if you need a reliable 1.8 MVA auxiliary source with high‑temperature insulation, flexible cooling options and proven classification approvals for large merchant or offshore vessels. Avoid if the installation area requires higher ingress protection (IP55+), has severe space constraints, or if the crew lacks capability to perform regular VPI‑related testing and fan/water‑cooling maintenance.

Use Cases: Typically installed as a main auxiliary generator on large tankers, container ships and cruise vessels to supply hotel loads, cargo handling equipment and emergency power. Also used in offshore platforms where robust temperature tolerance and dual cooling modes are advantageous for continuous operation under variable sea‑state conditions.

Manufacturer Datasheet

Datasheet

AMG 1800-690V-50Hz-IP55

· synchronous marine generator

Power (kVA)

1800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1800 kVA) suitable for large ship auxiliaries
Robust IP55 enclosure protects against salt spray and dust
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Flexible cooling options (dual axial fans, optional water‑cooling) for a wide ambient temperature range
Integrated ABB UNITROL AVR series offers precise voltage regulation and built‑in over/under‑excitation protection

Weaknesses

Large physical footprint and weight require substantial engine‑room space
Requires skilled maintenance of VPI insulation system and bearing lubrication
Higher capital cost compared with lower‑rated generators or diesel‑engine gensets
Fixed 690 V output may need step‑up transformers for vessels operating at higher bus voltages
Complex commissioning procedures; must verify AVR settings and insulation resistance before start‑up

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsContainer ships >10,000 TEUOffshore supply vessels with high auxiliary demand

Certifications: IEC 60034-18-32IEEE Std 117‑1974

Decision Guide: Choose if the vessel needs a reliable, high‑capacity auxiliary generator capable of operating in harsh marine environments and can accommodate the size and weight of an 1800 kVA unit. Avoid if space is limited, power demand is below 500 kVA, or budget constraints favor smaller or lower‑cost gensets.

Use Cases: Provides main auxiliary power for propulsion support, hotel loads, cargo handling equipment, and emergency power on large tankers, LNG carriers, and cruise ships; also used in shore‑power configurations where high output and robust environmental protection are required.

Manufacturer Datasheet

Datasheet

AMG 1800-690V-60Hz-IP23

· marine synchronous generator

Power (kVA)

1800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1800 kVA) in a compact LV frame suitable for many vessel types
Robust VPI (vacuum pressure impregnation) H‑class insulation provides excellent moisture and thermal resistance
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation protection
Dual cooling options (air‑only or water‑cooled) allow flexibility for different installation spaces
Sealed‑for‑life bearings on frames <400 reduce routine lubrication requirements

Weaknesses

IP23 rating protects only against solid objects >12.5 mm; not fully dust‑tight in harsh spray zones
Designed for 60 Hz operation – vessels standardized on 50 Hz may need frequency conversion equipment
Large frame (typically 400–630) can impose weight and space penalties on smaller ships
VPI insulation requires careful moisture control during maintenance; failure can lead to costly rewinding
Initial capital cost is higher than basic low‑spec generators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: DNV GL Marine ClassificationABS

Decision Guide: Choose if you need a reliable 1.8 MVA auxiliary generator with built‑in AVR, high‑temperature insulation and dual cooling for vessels operating on 60 Hz. Avoid if the installation space is severely limited, the ship runs exclusively on 50 Hz, or a higher IP rating (e.g., IP55) is required for exposed locations.

Use Cases: The AMG 1800-690V is typically installed as a main auxiliary generator on large commercial vessels to supply hotel loads, cargo handling equipment and emergency power. It is also used as a standby unit on cruise ships and offshore platforms where robust performance under salty, humid conditions and integration with ABB Ability condition monitoring are valued.

Manufacturer Datasheet

Datasheet

AMG 1800-690V-60Hz-IP44

· synchronous marine generator

Power (kVA)

1800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (1.8 MVA) in a compact LV frame suitable for many vessel sizes
Class‑H VPI insulation provides excellent thermal endurance and moisture resistance
IP44 enclosure protects against splashing water and dust, meeting typical shipboard environments
Dual cooling options (axial fans or optional water‑cooling) allow adaptation to ambient temperature ranges from –20 °C to +45 °C
Integrated UNITROL/GEN AVR families give precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

IP44 is only splash‑proof; not suitable for areas with direct exposure to heavy spray or immersion
Maximum terminal voltage of 690 V may require step‑up transformers on vessels that operate at higher bus voltages
Large physical footprint and weight demand dedicated engine‑room space and robust mounting
Sealed‑for‑life bearings (frame <400) limit in‑service re‑greasing options, increasing reliance on initial quality
Moisture ingress can still affect insulation if ventilation ducts are not kept clean; requires regular IR testing

Typical Vessels: TankerContainer shipBulk carrierCruise liner (hotel load)Offshore supply vesselLNG/LPG carrier (auxiliary power)

Decision Guide: Choose if: you need a reliable 1.8 MVA auxiliary generator with class‑H insulation, flexible cooling and standard 690 V output for vessels that have space for a LV frame and operate in typical marine environments. Avoid if: the installation requires higher bus voltages (>1000 V), a higher ingress protection rating (IP65+), or extremely compact engine‑room dimensions.

Use Cases: Commonly installed as main auxiliary generators on tankers, container ships and bulk carriers to supply hotel loads and emergency power; also used on cruise ships for hotel electricity and on offshore support vessels where robust insulation and dual cooling are advantageous.

Manufacturer Datasheet

Datasheet

AMG 1800-690V-60Hz-IP55

· synchronous marine generator

Power (kVA)

1800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 1.8 MVA in a compact LV frame (400‑630) suitable for large vessels
IP55 sealed enclosure provides excellent protection against salt spray and dust
VPI (vacuum pressure impregnation) H‑class insulation gives long life and high dielectric strength
Integrated UNITROL AVR series offers precise voltage regulation with UEL/OEL limits
Dual axial fans allow flexible air or water cooling for a wide ambient temperature range

Weaknesses

Requires auxiliary step‑up transformer if ship power system is >690 V, adding cost and space
Large physical footprint and weight (exact figures not disclosed) may limit installation in confined engine rooms
Maintenance of VPI insulation and moisture monitoring is critical; failure can lead to costly downtime
Sealed‑for‑life bearings are only available on frames <400; larger frames need re‑greasing, increasing service intervals

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>8 000 TEU)Cruise linersOffshore supply vesselsLNG carriers with high auxiliary power demand

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL Marine Power GenerationABS Class

Decision Guide: Choose if you need a reliable 1.8 MVA low‑voltage auxiliary generator with robust environmental protection, integrated ABB AVR and class‑approved design for large commercial vessels. Avoid if vessel space is severely constrained, the ship’s electrical system operates above 690 V without a transformer, or you prefer a fully sealed‑for‑life bearing solution for all frame sizes.

Use Cases: Typically installed as the main auxiliary generator on large tankers and container ships to supply hotel loads, cargo handling equipment, and emergency power. Also used in redundancy sets where one unit can be taken offline for maintenance while others continue operating, or as a dedicated emergency generator meeting SOLAS requirements.

Manufacturer Datasheet

Datasheet

AMG 2000-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2000 kVA at the standard 400 V LV bus simplifies integration with existing ship electrical systems.
Class H VPI insulation provides excellent resistance to moisture, salt and thermal ageing, extending service life in harsh marine environments.
Integrated ABB UNITROL AVR options (GEN06/GEN08) give precise voltage regulation and built‑in under/over‑excitation protection.
Modular frame sizes (400–630) allow flexible installation on a wide range of vessel layouts.
ABB’s global service network offers proven spare‑part availability and condition‑monitoring tools (e.g., ABB Ability LEAP).

Weaknesses

IP23 rating only protects against water spray; the unit is not fully dust‑tight, limiting use in extremely corrosive or splash‑heavy zones.
Low‑voltage output (400 V) may require step‑up transformers for vessels that operate on higher bus voltages, adding cost and space.
Physical size and weight of a 2 MW frame can be substantial, impacting deck space allocation on smaller ships.
Maintenance of VPI sealed windings demands specialized testing equipment and trained personnel.
Cooling relies on axial fans; performance can degrade if inlet/outlet passages become fouled with salt deposits.

Typical Vessels: Container shipCruise linerBulk carrierLNG/LPG carrierOffshore supply vesselNaval auxiliary

Decision Guide: Choose this generator when a reliable 2 MW LV source is needed, the ship already uses a 400 V bus, and you value ABB’s service support and robust VPI insulation. Avoid it if you require a fully sealed (IP55+) unit, direct high‑voltage output without transformers, or have severe space constraints on smaller vessels.

Use Cases: The AMG 2000-400V is typically installed as the main auxiliary generator for hotel load, emergency power, and dynamic positioning support on large commercial and offshore vessels, providing continuous power to propulsion auxiliaries, cargo handling equipment, and onboard services.

Manufacturer Datasheet

Datasheet

AMG 2000-400V-50Hz-IP44

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2 MVA) in a single unit reduces the number of generators needed.
Class H vacuum‑pressure‑impregnated insulation provides excellent thermal endurance for harsh marine environments.
IP44 enclosure offers protection against splashing water and dust while allowing easier access for maintenance.
Integrated UNITROL AVR with UEL/OEL limiters ensures stable voltage regulation under varying loads.
ABB global service network and proven track record simplify spare‑parts logistics and support.

Weaknesses

Large physical footprint (frame 400–630) may be restrictive on vessels with limited engine‑room space.
IP44 rating is only splash‑proof; additional shielding may be required in heavy spray zones.
Maintenance of VPI insulated windings demands specialized testing equipment and trained personnel.
Higher initial capital cost compared with lower‑rated or non‑ABB alternatives.
Cooling relies on axial fans that can accumulate salt deposits, requiring regular cleaning.

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: DNV GL class approvalABS classificationIEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if the vessel requires a robust 2 MVA auxiliary power source, has sufficient engine‑room volume for a frame‑400/630 unit, and benefits from ABB's service network and integrated AVR. Avoid if space is at a premium, a higher IP rating (e.g., IP55+) is mandatory, or capital expenditure must be minimized in favor of smaller generators.

Use Cases: Typically installed as the main auxiliary generator on large commercial ships to supply hotel loads, cargo handling equipment, and emergency power; also used as standby/emergency generators on cruise ships and offshore support vessels where reliable high‑power output is critical.

Manufacturer Datasheet

Datasheet

AMG 2000-400V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2000 kVA at low voltage (400 V) suitable for heavy hotel and propulsion‑auxiliary loads.
IP55 sealed enclosure protects against salt spray, dust and splashing water, extending service life in harsh marine environments.
Vacuum pressure impregnated (VPI) H‑class insulation provides excellent moisture resistance and long thermal ageing life.
Integrated UNITROL AVR series offers precise voltage regulation with under/over‑excitation protection.
Dual axial fan cooling (air or optional water‑cooled) gives flexible installation in confined engine rooms.

Weaknesses

Large physical footprint and high weight require substantial space and structural support on board.
Bearings are sealed‑for‑life only up to frame 400; larger frames need periodic greasing, increasing maintenance effort.
Designed for 50 Hz operation only – not suitable where 60 Hz standard is required without frequency conversion.
Sensitive to moisture ingress in the VPI system; requires strict humidity control and regular insulation testing.

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a reliable 2 MW auxiliary generator for large vessels operating in harsh sea conditions, where robust enclosure and integrated AVR are priorities. Avoid if vessel space is limited, 60 Hz power is required, or maintenance resources for greased bearings are unavailable.

Use Cases: Typically installed as the main hotel‑load generator on ultra‑large container ships, tankers and cruise vessels, or as a standby emergency power source on offshore platforms where high reliability and resistance to salt water corrosion are essential.

Manufacturer Datasheet

Datasheet

AMG 2000-400V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2000 kVA in a compact LV frame (400–630) suitable for large vessels
Robust VPI (vacuum pressure impregnation) insulation system, class H, offering excellent moisture resistance and long life
Flexible cooling options – dual axial fans with optional water‑cooling – allowing operation from -20 °C to +45 °C up to 1000 m altitude
Integrated UNITROL or GEN AVR series providing precise voltage regulation and built‑in under/over‑excitation limiters
Sealed‑for‑life bearing design (frames <400) reduces routine maintenance

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; additional environmental sealing may be required in harsh salt spray areas
Large physical footprint and weight compared with newer compact generator sets, impacting space‑constrained installations
Requires regular insulation resistance testing (Megger) and partial discharge monitoring to maintain class H performance
Air‑cooling effectiveness can degrade if inlet filters become fouled by salt deposits, necessitating frequent cleaning
Higher initial capital cost relative to smaller 500–1000 kVA units

Typical Vessels: Container shipBulk carrierCrude oil tankerLNG/LPG carrierCruise linerOffshore support vesselNaval auxiliary

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL class approval for marine generatorsABS classification approval

Decision Guide: Choose if you need a reliable 2 MW low‑voltage generator with proven VPI insulation, flexible cooling and integrated AVR for large commercial or offshore vessels. Avoid if the installation demands a higher IP rating, very limited space, or if lower capital expenditure is a primary driver.

Use Cases: Typically installed as main service generators on large cargo ships, cruise ships and offshore platforms to supply shipboard electrical loads, emergency power, and shore‑side power export; also used in high‑power auxiliary sets for propulsion support on LNG carriers.

Manufacturer Datasheet

Datasheet

AMG 2000-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2 MW) in a compact LV frame suitable for 400 V shipboard systems
VPI (vacuum pressure impregnation) H‑class insulation provides excellent moisture resistance and long life
IP44 enclosure protects against splashing water and dust, ideal for harsh marine environments
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C
Sealed‑for‑life bearings on frames <400 reduce maintenance intervals

Weaknesses

Physical size and weight are significant; installation requires ample engine room space
IP44 does not protect against full immersion, so additional sealing may be needed in very wet compartments
Frames ≥450 kg require periodic bearing re‑greasing, increasing maintenance effort
Only 400 V output; vessels needing higher voltage must use step‑up transformers
Initial capital cost is high compared with smaller auxiliary generators

Typical Vessels: Crude oil tankerContainer shipBulk carrierLNG/LPG carrierOffshore supply vesselCruise liner

Certifications: DNV GLABSLR (Lloyd's Register)IEC 60034‑18‑32IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 2 MW auxiliary generator with robust moisture‑resistant insulation, IP44 protection and integrated ABB UNITROL AVR for vessels that operate in harsh sea conditions and have space for a LV frame. Avoid if the installation envelope is very tight, higher voltage (≥6 kV) output is required without transformers, or you prefer a completely maintenance‑free bearing solution.

Use Cases: Typically installed as the main auxiliary generator on large ocean‑going vessels to supply hotel load, emergency power and support dynamic positioning systems; also used in dual‑generator configurations for redundancy on cruise ships and offshore platforms.

Manufacturer Datasheet

Datasheet

AMG 2000-400V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2 MVA suitable for main or emergency power on large ships
IP55-rated enclosure protects against dust and water jets in harsh sea environments
Class H insulation permits operation up to 180 °C, enhancing thermal durability
Dual axial fans allow flexible air‑cooling (water cooling optional) for efficient heat removal
Integrated UNITROL AVR provides precise voltage regulation with under/over‑excitation limits

Weaknesses

Large physical footprint (frame 400–630) may restrict installation in confined engine rooms
Higher frame sizes require greasable bearings, increasing maintenance effort compared to sealed‑for‑life units
Fixed 4‑pole 60 Hz speed is unsuitable for variable‑speed propulsion or hybrid applications
Relatively high capital cost and weight versus smaller generator sets
AVR electronics are moisture‑sensitive; requires careful sealing and periodic inspection

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrierRo‑Ro ferry

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117-1974

Decision Guide: Choose if you need a high‑power, rugged synchronous generator for main or emergency service on large vessels where space and weight are available and a fixed speed is acceptable. Avoid if the installation envelope is tight, variable‑speed operation is required, or lower upfront cost and lighter weight are primary concerns.

Use Cases: Typically installed as the main engine‑driven generator on tankers, container ships and cruise liners, or as an emergency/auxiliary power source on offshore support vessels where reliable, continuous electricity is critical under harsh marine conditions.

Manufacturer Datasheet

Datasheet

AMG 2000-440V-50Hz-IP23

· Four‑pole synchronous marine generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous power output (2 MVA) suitable for large ship service loads
Robust VPI (vacuum pressure impregnation) insulation class H provides excellent moisture resistance and thermal endurance
Flexible cooling options – dual axial fans with optional water‑cooling – allowing operation in a wide ambient temperature range
Integrated UNITROL or GEN AVR families offering precise voltage regulation and over/under‑excitation protection
Sealed‑for‑life bearing design (frame <400) reduces maintenance intervals

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and water spray; not suitable for areas with direct jet spray or immersion risk
Physical size and weight require dedicated engine‑room space and heavy‑floor support structures
Moisture ingress can still affect winding insulation over time, demanding regular IR/megger testing
Cooling performance depends on clean airflow; fouling of axial fans in salty marine environments can cause overheating
Initial capital cost is higher than comparable diesel‑engine gensets of similar rating

Typical Vessels: Container ship (≥8 000 TEU)Crude oil or product tankerBulk carrier (>50 000 dwt)Cruise linerOffshore supply vessel / platform support vessel

Certifications: IEC 60034-18-32 (insulation ageing test)IEEE Std 117‑1974 (generator safety and performance)

Decision Guide: Choose if the vessel requires a reliable, high‑capacity auxiliary power source, has sufficient engine‑room volume, and operates in environments where an IP23 enclosure is acceptable. Avoid if space is limited, higher ingress protection (e.g., IP55) is mandatory, or total ownership cost must be minimized relative to diesel gensets.

Use Cases: Main auxiliary generator for large merchant vessels providing hotel power, cargo handling equipment, and emergency supply; can also serve as a dedicated generator for dynamic positioning systems or shore‑power conversion on cruise ships where high continuous output is needed.

Manufacturer Datasheet

Datasheet

AMG 2000-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous power output (2 MW) in a compact LV frame (400–630) suitable for large merchant vessels
Robust VPI vacuum pressure impregnation insulation (class H) gives excellent moisture and corrosion resistance
Sealed‑for‑life or greasable bearing options reduce routine lubrication requirements
Integrated UNITROL AVR series provides precise voltage regulation with under/over‑excitation limits
Dual cooling capability (air‑only or air/water) allows adaptation to different shipboard layouts

Weaknesses

Large physical footprint and weight compared with smaller auxiliary generators; installation space must be planned
Requires skilled marine‑electrical personnel for insulation testing and bearing monitoring
Standard model is fixed at 50 Hz – not directly suitable for vessels that operate on 60 Hz systems without a frequency converter
Initial capital cost is higher than lower‑rated generators due to high‑grade materials and certification level
IP44 enclosure protects against splashing but still needs careful sealing in very salty or wet deck environments

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL class approval for LV generatorsABS Marine classificationLR (Lloyd's Register) approval

Decision Guide: Choose if you need a reliable 2 MW auxiliary power source on a large vessel, require marine‑grade insulation and bearing life‑extension features, and have sufficient engine room space for the LV frame. Avoid if the ship operates on 60 Hz only, has severe space constraints, or prefers a lower‑cost generator with less power rating.

Use Cases: The AMG 2000 is typically installed as an auxiliary main‑generator on large merchant ships to supply propulsion‑related hotel loads and emergency power. It is also used on cruise vessels for extensive hotel electricity demand and on offshore support ships where high, continuous power and robust corrosion resistance are essential.

Manufacturer Datasheet

Datasheet

AMG 2000-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2000 kVA in a compact LV frame (400–630) suitable for large ship auxiliaries
IP55 sealed enclosure provides excellent protection against salt spray and moisture
Class‑H VPI insulated windings give superior thermal endurance up to +180 °C
Dual cooling options (axial fans with optional water‑cooling) allow operation in hot climates
Integrated UNITROL or GEN AVR series offers precise voltage regulation and built‑in over/under‑excitation protection

Weaknesses

Physical size and weight are significant; installation requires ample engine‑room space
Large generators need regular insulation resistance and partial‑discharge monitoring in marine environments
Higher initial capital cost compared with lower‑rated units
Frames ≥450 require greasable bearings, adding maintenance tasks versus sealed‑for‑life designs
Standard output voltage 440 V may necessitate step‑up transformers for some shipboard distribution schemes

Typical Vessels: Crude oil tankersLNG carriersContainer ships (>10,000 TEU)Cruise linersOffshore supply vesselsNaval auxiliary ships

Decision Guide: Choose if you need a reliable 2 MVA auxiliary or main generator with robust environmental protection and flexible cooling on large commercial or offshore vessels. Avoid if space, weight, or budget constraints dominate, or when lower voltage outputs are required without additional transformer gear.

Use Cases: Commonly installed as the primary auxiliary power source on mega‑vessels to run hotel loads, cargo handling equipment, and emergency systems; also used in dual‑generator configurations for redundancy on cruise ships and offshore support vessels where high thermal endurance and corrosion resistance are critical.

Manufacturer Datasheet

Datasheet

AMG 2000-440V-60Hz-IP23

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (2000 kVA) in a compact LV frame (400–630) suitable for shipboard installation
Class‑H vacuum pressure impregnation (VPI) insulation provides excellent moisture and thermal resistance
Dual cooling options (axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C
Integrated UNITROL/GEN AVR series delivers precise voltage regulation and built‑in under/over‑excitation protection
Sealed‑for‑life bearings on frames <400 reduce routine lubrication requirements

Weaknesses

IP23 rating only protects against water spray; not suitable for areas with heavy splashing or dust exposure without additional shielding
Large physical footprint may limit installation in vessels with tight machinery spaces
VPI insulation inspection and partial‑discharge testing require specialised equipment and trained personnel
Higher upfront capital cost compared with conventional diesel gensets of similar rating
Single‑unit design limits redundancy unless a second generator is installed

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10 000 TEU)Bulk carrierCruise linerOffshore supply vesselLNG carrierNaval auxiliary / replenishment ship

Certifications: IMO D‑2DNV GL Class ApprovalABS Type ApprovalUSCG Marine Electrical Equipment Certification

Decision Guide: Choose if you need a robust 2 MW marine generator with high insulation class, integrated AVR and flexible cooling for large merchant or offshore vessels where space permits. Avoid if the installation area requires a higher ingress protection rating (e.g., IP54), if budget constraints favour lower‑cost gensets, or when redundancy must be achieved with multiple smaller units.

Use Cases: Typically installed as a main auxiliary generator supplying hotel load and emergency power on large tankers, container ships and cruise vessels; also used as a dedicated propulsion‑auxiliary unit on offshore platforms where reliable, high‑power electrical supply is critical.

Manufacturer Datasheet

Datasheet

AMG 2000-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density (2 MW) suitable for large auxiliary power demands
Class‑H VPI insulation provides excellent thermal endurance and moisture resistance
Dual cooling options (air‑flow with axial fans or water‑cooled) increase installation flexibility
IP44 rating protects against splashing water and dust in harsh marine environments
Integrated UNITROL AVR series offers precise voltage regulation and built‑in over/under‑excitation limits

Weaknesses

Physical size and weight require substantial engine room space and mounting structure
IP44 protection is limited to splash resistance; not suitable for fully exposed or heavily sprayed locations without additional shielding
Requires regular insulation testing (Megger, PD) due to high moisture sensitivity of marine environments
Bearing lubrication may be sealed‑for‑life only on lower frame sizes; higher frames need periodic greasing
Initial cost is higher than comparable low‑power diesel generators

Typical Vessels: Cruise shipsContainer vesselsBulk carriersLNG/LPG carriersOffshore supply vessels (OSV)Floating production storage and offloading units (FPSO)

Certifications: IEC 60034-18-32 (insulation aging)IEEE Std 117‑1974DNV GL Marine Equipment Certification

Decision Guide: Choose if you need a reliable 2 MW auxiliary power source with flexible cooling, high temperature insulation and robust splash protection for large commercial vessels or offshore platforms. Avoid if space is limited, the installation environment requires higher ingress protection (IP65+) or a lower‑cost, lower‑power generator will meet the load profile.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling equipment, dynamic positioning systems, and emergency generators on large passenger ships, container carriers, and offshore production units where continuous high‑capacity electricity is critical.

Manufacturer Datasheet

Datasheet

AMG 2000-440V-60Hz-IP55

· Four‑pole synchronous marine generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density (2 MVA) in the low‑voltage LV range suitable for auxiliary power on large vessels
IP55 enclosure and VPI (vacuum pressure impregnation) winding system give excellent resistance to salt spray, moisture and thermal ageing
Class H insulation allows operation up to 180 °C, extending service life under heavy load cycles
Dual axial fan design permits air‑ or water‑cooled configurations for flexible installation
Integrated ABB UNITROL/GEN AVR series with UEL/OEL limiters and optional remote monitoring via ABB Ability LEAP

Weaknesses

Large physical footprint and weight compared with compact diesel generators of similar rating
Higher upfront capital cost; VPI winding repair is specialised and expensive
Requires skilled maintenance personnel for insulation testing, bearing greasing and AVR calibration
Fixed 440 V output may need step‑up transformers on vessels that standardise on higher bus voltages
Sensitive to seal degradation – regular IP55 integrity checks are mandatory

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsCruise LinersOffshore Supply Vessels (OSV)LNG carriers and other gas carriers

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a robust 2 MVA LV generator with proven marine‑grade protection, high temperature insulation and ABB’s global service network. Avoid if vessel space or weight is at a premium, if a higher bus voltage is required without additional transformers, or when budget constraints favour simpler diesel sets.

Use Cases: Primary auxiliary power generation for main engine start‑up, hotel load, emergency standby, and dynamic positioning support on large commercial and offshore vessels where reliability in corrosive sea‑air conditions is critical.

Manufacturer Datasheet

Datasheet

AMG 2000-690V-50Hz-IP23

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density – 2 MW output in a compact LV frame (400–630) suitable for large vessels
Robust VPI vacuum‑pressure‑impregnated stator/rotor insulation (Class H) for long life in hot, humid marine environments
Dual cooling options (air‑only or air‑water) allow flexibility for deck‑mounted installations
Integrated ABB UNITROL AVR series provides precise voltage regulation and built‑in under/over‑excitation protection
Standardised IEC‑compliant design simplifies certification and spare‑parts logistics

Weaknesses

IP23 rating only protects against solid objects >12.5 mm; additional sealing may be required in spray‑water or highly corrosive zones
Physical footprint of a frame 400–630 can limit installation space on smaller vessels
Bearings require periodic greasing (unless frame <400 sealed for life), adding maintenance effort
Fixed 690 V output may need step‑up transformers for ships that operate at higher bus voltages
Initial capital cost is higher than comparable low‑power generators

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsCruise LinersOffshore Supply Vessels (OSV)FPSO units

Certifications: IEC 60034-18-32

Decision Guide: Choose if: you need a reliable 2 MW auxiliary source, have space for a LV frame 400‑630, require flexible cooling and want ABB’s proven AVR system. Avoid if: the installation demands a fully sealed (IP55+) unit, weight/space constraints are critical, or the ship operates on a higher primary voltage that would make a 690 V generator inefficient.

Use Cases: Provides hotel power, cargo‑handling equipment supply and emergency generation on large merchant vessels; often installed as part of an ABB Power Management System to support diesel‑electric propulsion auxiliaries and shore‑power connections.

Manufacturer Datasheet

Datasheet

AMG 2000-690V-50Hz-IP44

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2000 kVA) in a relatively compact frame (400–630 series)
Robust VPI insulation system class H/F suitable for harsh marine humidity and temperature ranges
Dual‑axial fan cooling with optional water‑air configuration provides flexible thermal management
Integrated ABB UNITROL AVR (1000 series) offers precise voltage regulation and protection functions
Widely supported by ABB service network and condition‑monitoring tools (ABB Ability LEAP)

Weaknesses

IP44 rating only protects against splashing; additional sealing may be required in heavy spray zones
Physical size and weight demand dedicated generator room space and reinforced foundations
Maintenance of VPI insulation and sealed bearings requires specialised training and tooling
Fixed 690 V/50 Hz output – operation at 60 Hz would need derating or additional conversion equipment
Higher capital cost compared with simpler diesel‑engine driven generators of similar rating

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsCruise LinersLNG CarriersOffshore Supply Vessels (OSV)Ro‑Ro Ferries

Decision Guide: Choose this generator when a vessel requires a reliable 2 MW auxiliary power source, operates in demanding marine climates, and benefits from ABB's global support and advanced AVR control. Avoid it on ships with severe space constraints, where a fully sealed (IP66/68) unit is mandatory, or where only low‑power generators are needed.

Use Cases: Typically installed as the main auxiliary generator for hotel load, emergency power, and dynamic positioning support on large tankers, container vessels, cruise ships, and offshore platforms. It also serves as a standby unit in dual‑generator configurations to meet SOLAS redundancy requirements.

Manufacturer Datasheet

Datasheet

AMG 2000-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2000 kVA) suitable for main‑auxiliary applications on large ships
Robust IP55 enclosure and Class H VPI insulation provide excellent resistance to salt, moisture and thermal ageing
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation in a wide ambient temperature range
Integrated ABB UNITROL or GEN AVR families deliver precise voltage regulation and built‑in under/over‑excitation protection
ABB global service network and proven field record simplify maintenance and spare‑parts logistics

Weaknesses

Large physical footprint and weight require substantial engine‑room space and structural support
Maintenance intensity is higher than for lower‑power generators; regular insulation resistance, bearing temperature and vibration monitoring are mandatory
Requires dedicated cooling infrastructure (air ducts or water circuit) which adds complexity on retrofit projects
Initial capital cost is relatively high compared with smaller diesel generator sets
Four‑pole design limits rotational speed options, potentially affecting coupling arrangements

Typical Vessels: VLCC / Suezmax TankerContainer Ship (≥8 000 TEU)Cruise LinerLNG CarrierOffshore Supply VesselNaval Auxiliary / Support Ship

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if the vessel needs a reliable 2 MVA auxiliary or emergency power source, operates in harsh marine environments, and has sufficient engine‑room volume for a high‑capacity generator with flexible cooling. Avoid if space is limited, power demand is below 1 MVA, or budget constraints favour smaller, lower‑maintenance gensets.

Use Cases: The AMG 2000‑690V‑50Hz‑IP55 is typically installed as the main auxiliary generator on large tankers, container ships and cruise vessels to supply shipboard electrical loads and emergency power. It is also used for shore‑power conversion plants on offshore platforms where high continuous output and robust environmental protection are required.

Manufacturer Datasheet

Datasheet

AMG 2000-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2000 kVA suitable for large auxiliary power plants
Robust H‑class VPI insulation provides excellent thermal endurance and moisture resistance
Dual axial fan design allows both air‑ and water‑cooled configurations, increasing flexibility in installation
Integrated UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation protection
DNV‑GL and ABS classification approvals simplify class society acceptance

Weaknesses

IP23 enclosure only protects against limited water spray; additional sealing may be required for harsh marine exposure
Large physical footprint (frame 400–630) and high weight limit installation in space‑constrained vessels
Cooling performance depends on fan cleanliness; salt deposition can reduce airflow and require frequent maintenance
Insulation condition must be monitored regularly due to moisture ingress risk in marine environments

Typical Vessels: Container shipCruise linerLNG carrierOil tankerBulk carrierOffshore supply vessel

Certifications: DNVABSLR

Decision Guide: Choose this generator when a high‑power (≈2 MW) auxiliary plant is required, space and weight allowances are sufficient, and class society approval (DNV/ABS/LR) is needed. Avoid if the installation area demands a higher ingress protection rating (e.g., IP55), or where weight and footprint constraints dominate.

Use Cases: Commonly installed as part of the main auxiliary power plant on large commercial vessels, providing propulsion‑support electricity, hotel loads, and emergency power; also used for shore‑power conversion units and dynamic positioning systems on offshore vessels.

Manufacturer Datasheet

Datasheet

AMG 2000-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous power output (2 MW) suitable for large auxiliary loads
Robust IP44 enclosure protects against splashing salt water in marine service
Class‑H insulation and VPI vacuum pressure impregnation give excellent thermal endurance and moisture resistance
Integrated UNITROL AVR provides precise voltage regulation and built‑in under/over‑excitation limits
Air‑ or water‑cooled options allow flexibility for different installation spaces

Weaknesses

Large physical footprint and weight require dedicated generator room and heavy foundations
IP44 rating does not protect against full immersion; additional sealing may be needed in very wet compartments
Standard bearing design (non‑sealed) demands regular lubrication checks and possible re‑greasing
Cooling fans are exposed to salty air and can suffer corrosion if not cleaned regularly
Output voltage limited to 690 V, requiring step‑up transformers for vessels that operate at higher bus voltages

Typical Vessels: Container shipBulk carrierLNG/LPG tankerCruise linerOffshore supply vesselNaval auxiliary

Decision Guide: Choose this generator when you need a proven 2 MW marine power source with high temperature capability, flexible cooling options and ABB's global support network. Avoid it if space is at a premium, you require a fully sealed (IP68) unit, or your vessel operates directly on higher bus voltages that would make the 690 V output inefficient.

Use Cases: The AMG 2000‑690V is typically installed as a main auxiliary generator on large merchant vessels and cruise ships to supply hotel loads, cargo handling equipment, and emergency power. It is also used on offshore platforms and naval support ships where reliable high‑power generation in a salty environment is critical.

Manufacturer Datasheet

Datasheet

AMG 2000-690V-60Hz-IP55

· Synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High insulation class (H) and VPI winding technology gives excellent thermal endurance and moisture resistance.
IP55 enclosure provides robust protection against salt spray and dust in harsh marine environments.
Dual cooling options (axial fans + optional water‑cooling) allow operation from –20 °C to +45 °C up to 1000 m altitude.
Integrated UNITROL AVR series delivers precise voltage regulation with under/over‑excitation limiters.
Modular frame sizes (400–630) simplify installation and spare‑part logistics.

Weaknesses

Physical size and weight are significant for a 2 MW unit, requiring ample engine‑room space.
Maintenance of VPI insulated windings demands specialized testing (megger, tan‑delta) and skilled personnel.
Standard output voltage is 690 V; ships that operate at higher voltages need step‑up transformers.
Initial capital cost is higher than lower‑spec generators due to high‑class materials and AVR.
Sealed‑for‑life bearings are limited to frames <400; larger frames require periodic re‑greasing.

Typical Vessels: Crude oil tankerLNG carrierContainer ship (>10 000 TEU)Cruise linerOffshore supply vessel

Certifications: DNV GLABS

Decision Guide: Choose if you need a reliable 2 MW auxiliary generator with high temperature capability, robust environmental protection and integrated voltage regulation for large commercial or offshore vessels. Avoid if space, weight or budget constraints are critical, or if the vessel requires direct generation at voltages above 690 V without additional transformers.

Use Cases: Main hotel‑load generator on cruise ships, emergency power source on tankers and LNG carriers, auxiliary power for offshore platform support vessels, and redundancy generators on large container ships where high reliability and low maintenance downtime are essential.

Manufacturer Datasheet

Datasheet

AMG 2250-400V-50Hz-IP23

· marine synchronous generator

Power (kVA)

2250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.25 MVA) in a compact LV frame (400‑630) suitable for large vessels
VPI H‑class insulation provides excellent moisture and thermal resistance for marine environments
Flexible cooling options (dual axial fans, optional water‑cooling) allow operation from –20 °C to +45 °C up to 1000 m altitude
Integrated UNITROL 1000/GEN AVR series with under/over‑excitation limiters ensures stable voltage regulation
Sealed‑for‑life bearing option reduces maintenance for frames <400

Weaknesses

IP23 enclosure offers limited protection against direct water spray; additional shielding may be required in wet deck areas
Large physical footprint and weight compared with equivalent diesel generators can impact space planning
Requires specialized insulation testing (Megger, PD) and skilled personnel for routine maintenance
No built‑in redundancy; a single unit failure impacts ship’s auxiliary power unless duplicated
Higher initial capital cost relative to lower‑rated marine generators

Typical Vessels: Cruise shipsContainer vesselsTankersBulk carriersOffshore supply vesselsLNG carriersNaval auxiliary ships

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 2–3 MVA LV generator with robust H‑class insulation, flexible cooling and integrated AVR for large commercial or offshore vessels that can accommodate the frame size. Avoid if the installation area is exposed to heavy spray requiring higher IP rating, weight/space are critical, or you require built‑in redundancy without adding a second unit.

Use Cases: Typically installed as the main auxiliary generator on cruise ships and container carriers for hotel load and propulsion support, as emergency power on tankers and bulk carriers, and as primary shipboard power on offshore supply vessels where high reliability and marine‑grade insulation are essential.

Manufacturer Datasheet

Datasheet

AMG 2250-400V-50Hz-IP44

· marine synchronous generator

Power (kVA)

2250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2 250 kVA suitable for large ship hotel loads or propulsion auxiliaries
Vacuum pressure impregnated (VPI) H‑class winding provides excellent thermal and moisture resistance
Dual axial fans with optional water‑cooling allow flexible cooling in a wide ambient temperature range (-20 °C to +45 °C)
Integrated UNITROL 1000/GEN AVR offers UEL/OEL protection and precise voltage regulation
Standardised frame sizes (400–630) simplify installation and spare‑parts logistics

Weaknesses

IP44 rating provides limited dust protection; additional sealing may be required in very harsh environments
Large physical footprint and weight demand dedicated machinery space and heavy foundations
Maintenance intensive – regular insulation resistance, partial discharge and bearing temperature monitoring are mandatory
Cooling performance can be marginal in hot tropical climates without supplemental water‑cooling
Requires skilled personnel for commissioning and periodic AVR calibration

Typical Vessels: Container ship (≥8 000 TEU)Crude oil tankerLNG carrierCruise linerOffshore supply vesselNaval auxiliary / replenishment ship

Decision Guide: Choose if you need a reliable >2 MW marine generator with built‑in AVR, robust VPI insulation and the ability to operate across a wide temperature range. Avoid if space, weight or higher IP protection (e.g., IP66) are critical constraints, or if your crew lacks the expertise for the prescribed inspection regime.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels to supply hotel loads and emergency power, or as a dedicated propulsion‑auxiliary unit on offshore platforms where high reliability and rapid voltage regulation are required.

Manufacturer Datasheet

Datasheet

AMG 2250-400V-50Hz-IP55

· synchronous marine generator

Power (kVA)

2250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.25 MW) suitable for large auxiliary power plants on ocean‑going vessels
Robust IP55 sealed enclosure protects against salt spray and dust
Class H VPI insulated windings provide excellent thermal endurance and longevity
Integrated UNITROL AVR series offers precise voltage regulation and built‑in over/under‑excitation protection
Dual axial fan cooling allows flexible air or water‑cooled operation in a wide ambient temperature range

Weaknesses

Large physical footprint and high weight require substantial engine room space and handling equipment
Requires regular insulation resistance and partial discharge testing to monitor moisture ingress
Standard version is fixed at 50 Hz; not suitable for vessels that need dual‑frequency capability
Maintenance of sealed‑for‑life bearings (frame <400) or greasable bearings (larger frames) demands skilled technicians
Cooling performance can be limited in very high ambient temperatures without supplemental water cooling

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vesselsLNG carriers

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV GL Type Approval

Decision Guide: Choose if you need a reliable >2 MW auxiliary generator with strong environmental protection, integrated AVR and proven ABB service support. Avoid if engine‑room space is at a premium, dual‑frequency operation is required, or the crew lacks experience with high‑power synchronous generators.

Use Cases: Typically installed as the main auxiliary power source on large merchant vessels, providing electricity for hotel loads, cargo handling equipment, and emergency power. Also used on offshore platforms where continuous, high‑capacity generation and robust corrosion resistance are critical.

Manufacturer Datasheet

Datasheet

AMG 2250-400V-60Hz-IP23

· synchronous marine generator

Power (kVA)

2250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.25 MVA) in a compact LV frame suitable for large auxiliary power plants
Robust H‑class VPI insulation provides excellent moisture resistance and long service life in harsh marine environments
Dual axial fan cooling allows flexible air or water‑cooled operation, extending applicability to varied climate zones
Standardised UNITROL 1000/GEN AVR series offers integrated voltage/frequency control with under/over‑excitation protection
Sealed‑for‑life bearing options reduce maintenance intervals for frames up to 400 kVA

Weaknesses

IP23 rating limits protection against direct water ingress; not ideal for generators exposed to heavy spray or immersion zones
Bearing lubrication is re‑greasable only on larger frame sizes (≥450), increasing periodic maintenance effort
Size and weight are substantial compared to lower‑power modular units, requiring dedicated engine room space
Requires careful AVR isolation during insulation testing, adding procedural complexity for condition monitoring
Standard cooling relies on adequate airflow; fouling of axial fans in salt‑laden environments can degrade performance if not regularly cleaned

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>10 000 TEU)Cruise linersOffshore supply vesselsLNG carriers with high auxiliary power demand

Certifications: DNVABSIEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 2.25 MVA auxiliary generator with proven H‑class VPI insulation, dual fan cooling and integrated UNITROL AVR for large commercial vessels. Avoid if the installation area requires higher ingress protection (IP≥44) or if weight/space constraints favour smaller modular generators.

Use Cases: Typically installed as a main auxiliary power source on large ocean‑going ships to supply shipboard electricity, hotel loads, and emergency power; also used in offshore platforms where robust, high‑capacity generation is required under harsh sea‑air conditions.

Manufacturer Datasheet

Datasheet

AMG 2250-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

2250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.25 MVA) in a compact frame suitable for large vessels
VPI (vacuum pressure impregnation) H‑class insulation gives excellent moisture resistance and thermal ageing performance
IP44 enclosure protects against splashing water and dust, meeting typical shipboard environmental requirements
Flexible cooling options – dual axial fans with optional water‑cooling – allow operation from -20 °C to +45 °C
Integrated ABB UNITROL 1000 or GEN06/GEN08 AVR provides precise voltage regulation and built‑in under/over‑excitation limits

Weaknesses

Physical size and weight are substantial; installation requires dedicated generator room space
IP44 rating may be insufficient in areas exposed to heavy spray, requiring additional shielding
Initial capital cost is higher than comparable low‑cost alternatives
Maintenance of VPI insulation demands specialized testing (megger, tan‑delta) and skilled personnel
Standard output voltage is 400 V; ships needing higher bus voltages must add step‑up transformers

Typical Vessels: Cruise shipContainer vesselTankerBulk carrierOffshore supply vesselNaval auxiliary ship

Certifications: IEC 60034-18-32 (insulation ageing)IEEE 117‑1974DNV GL class approvalABS class approvalLloyd's Register class approval

Decision Guide: Choose if you need a proven, high‑output auxiliary generator with robust H‑class insulation, flexible cooling and ABB’s global service support. Avoid if space is at a premium, the installation zone is subject to heavy spray beyond IP44 protection, or a lower initial cost solution is acceptable.

Use Cases: Main shipboard auxiliary power for hotel load on cruise ships, emergency generator sets on tankers and bulk carriers, secondary propulsion power on offshore supply vessels, and as part of integrated power‑management systems on large container ships.

Manufacturer Datasheet

Datasheet

AMG 2250-400V-60Hz-IP55

· marine synchronous generator

Power (kVA)

2250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (2.25 MW) suitable for large hotel loads and emergency power
IP55 sealed enclosure protects against salt spray and harsh marine environment
VPI‑impregnated H‑class insulation provides excellent moisture resistance and long life
Dual axial fans with optional water‑cooling give flexible cooling options for varied climates
ABB’s proven reliability and global service network

Weaknesses

Large physical footprint and weight compared with lower‑rated units
Requires skilled maintenance (insulation testing, bearing monitoring) to preserve performance
Fixed 60 Hz frequency may not suit vessels standardized on 50 Hz
Initial capital cost is higher than basic low‑power generators

Typical Vessels: Crude oil tankerLNG carrierContainer ship (>5,000 TEU)Cruise linerOffshore supply vessel

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL class approval for auxiliary generatorsABS classification approval

Decision Guide: Choose if: you need >2 MW of reliable auxiliary power, operate in harsh salt‑water conditions, and require flexible cooling (air or water). Avoid if: vessel space is severely limited, the plant standard is 50 Hz, or the budget cannot accommodate a high‑capacity unit with its maintenance regime.

Use Cases: Typically installed as the main auxiliary generator on large tankers, cruise ships and offshore vessels to supply hotel loads, cargo handling equipment, and emergency power for critical systems. Also used in dual‑generator configurations where redundancy is required.

Manufacturer Datasheet

Datasheet

AMG 2250-440V-50Hz-IP23

· synchronous marine generator

Power (kVA)

2250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2.25 MVA suitable for large vessel auxiliary power needs
Class H VPI insulated windings provide excellent thermal endurance and moisture resistance
Dual axial fan design allows flexible air‑ or water‑cooling configurations
Integrated UNITROL/GEN AVR options give precise voltage regulation and overload protection
Designed for operation from –20 °C to +45 °C up to 1 000 m altitude, meeting a wide climate envelope

Weaknesses

IP23 rating only protects against limited water spray; not suitable for heavy‑spray zones without additional shielding
Large frame (LV series 400–630) requires considerable installation space and structural support
Moisture‑sensitive insulation demands regular IR and partial‑discharge testing to avoid hidden degradation
Air‑cooling alone may be insufficient in hot tropical climates, potentially requiring auxiliary water cooling
Heavy overall mass (typical for 2 250 kVA units) can impact vessel weight budgeting

Typical Vessels: VLCC / TankerContainer shipBulk carrierCruise linerOffshore supply vesselNaval auxiliary

Certifications: IMO SOLAS Chapter II‑1DNV GL Marine Electrical EquipmentABS (American Bureau of Shipping) approval

Decision Guide: Choose if you need a proven, high‑capacity synchronous generator with robust Class H insulation and flexible cooling for large commercial or offshore vessels. Avoid if vessel space is severely constrained, a higher IP rating (e.g., IP55) is mandatory, or weight limits preclude a heavy LV‑frame unit.

Use Cases: Main auxiliary power plant on VLCCs, container ships and cruise liners; emergency backup generation for critical shipboard systems; shore‑power (cold‑ironing) installations where >2 MW of clean electricity is required; offshore platform support vessels needing reliable high‑output generation.

Manufacturer Datasheet

Datasheet

AMG 2250-440V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

2250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.25 MVA) in a compact LV frame suitable for large vessels
H‑class VPI insulation provides excellent moisture resistance and long service life in salty environments
IP44 enclosure protects against splashing water and dust, meeting typical marine installation requirements
Dual axial fans with optional water cooling allow operation from –20 °C to +45 °C and up to 1000 m altitude
Sealed‑for‑life or greasable bearing options reduce routine maintenance intervals

Weaknesses

Physical footprint and weight are significant; may limit installation in space‑constrained engine rooms
IP44 protection is not sufficient for fully exposed locations that require IP65 or higher
Dual fan system can generate noticeable acoustic noise, requiring additional silencing measures
Requires skilled personnel for AVR (UNITROL 1000/GEN) tuning and periodic insulation testing
Initial capital cost is higher than lower‑rated generators of the same series

Typical Vessels: Crude oil tankerLNG/LPG carrierContainer shipCruise linerOffshore supply vesselBulk carrier

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL approvalABS classificationLloyd's Register type approval

Decision Guide: Choose if: you need a robust 2.25 MVA auxiliary generator for long‑haul vessels operating in hot or humid climates, where high insulation class and modular maintenance are priorities. Avoid if: engine‑room space is severely limited, noise restrictions are stringent, or the installation requires higher ingress protection (IP65+) or a lower initial investment.

Use Cases: Typically installed as an auxiliary power source on large tankers, cruise ships and offshore support vessels to supply hotel loads, emergency generators and propulsion auxiliaries. The optional water‑cooling version is favoured in tropical routes where ambient temperatures approach the upper design limit.

Manufacturer Datasheet

Datasheet

AMG 2250-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

2250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous power output of 2 250 kVA suitable for large auxiliary or propulsion loads
Robust IP55 enclosure protects against salt spray and dust in harsh maritime environments
Class H VPI insulation provides excellent thermal endurance and moisture resistance
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C
Integrated ABB UNITROL or GEN AVR families give precise voltage regulation and built‑in over/under‑excitation protection

Weaknesses

Large physical footprint and high weight require dedicated generator room space
Standard rating is 50 Hz only; vessels operating on 60 Hz need a different model
Complex cooling system (air or water) adds installation and maintenance effort
Requires skilled personnel for VPI insulation testing and bearing lubrication procedures
Higher initial capital cost compared with lower‑power modular generators

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsLarge container vessels (>10 000 TEU)Offshore supply vessels and platform support ships

Certifications: DNVABS

Decision Guide: Choose if you need a reliable >2 MW auxiliary or main‑propulsion generator with strong environmental protection, flexible cooling and integrated AVR on a large vessel. Avoid if space is limited, the ship operates on 60 Hz, or budget constraints favour smaller modular units.

Use Cases: Typically installed as the primary hotel‑load generator on ultra‑large tankers, LNG carriers and cruise ships, or as a secondary propulsion auxiliary on vessels that require high‑capacity electrical power for thrusters, dynamic positioning or emergency supply.

Manufacturer Datasheet

Datasheet

AMG 2250-440V-60Hz-IP23

· low‑voltage synchronous marine generator

Power (kVA)

2250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (2.25 MVA) in a compact LV frame suitable for large vessels
VPI H‑class insulation provides excellent moisture and thermal resistance
Flexible cooling options (dual axial fans with optional water‑cooling) for varied climate zones
Integrated ABB UNITROL/GEN AVR families offering precise voltage regulation and protection limits
Designed to IEC 60034‑18‑32, IEEE 117 and major class society standards

Weaknesses

IP23 enclosure only protects against solid objects >12.5 mm; not dust‑tight or fully splash‑proof
Limited to low‑voltage (380‑690 V) – additional step‑up transformers required for higher shipboard voltages
Physical size and weight are substantial, limiting installation on smaller vessels
Moisture‑sensitive VPI insulation demands regular IR/partial‑discharge testing in marine environments
Cooling performance depends on clean airflow; fouling of fans can reduce rating

Typical Vessels: Crude oil tankersContainer ships (>10 000 TEU)Cruise linersLNG carriersOffshore supply vesselsNaval auxiliaries

Certifications: DNVABSLR (Lloyd's Register)IEC 60034‑18‑32 complianceIEEE 117‑1974

Decision Guide: Choose if you need a proven 2.25 MVA LV generator with robust H‑class insulation, flexible cooling and ABB AVR integration for large commercial vessels where space permits an IP23 enclosure. Avoid if the installation requires higher voltage output, fully sealed (IP55+) protection, or strict weight/space limits typical of small craft.

Use Cases: Typically installed as a main auxiliary generator on large tankers, container ships and cruise liners to supply hotel loads, cargo handling equipment and emergency power; also used as standby generators on offshore platforms where reliable low‑voltage power is required.

Manufacturer Datasheet

Datasheet

AMG 2250-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

2250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.25 MVA) in a compact LV frame suitable for auxiliary power plants.
Robust IP44 enclosure and VPI‑sealed stator/rotor provide excellent resistance to salt spray and moisture.
Class H insulation allows operation up to 180 °C, extending service life under high thermal loads.
Integrated ABB UNITROL AVR options (1000 series) give precise voltage regulation and built‑in over/under‑excitation protection.
Standardised mounting frames (400–630) simplify installation on a wide range of vessel types.

Weaknesses

Large physical footprint and weight compared with medium‑speed diesel generators of similar rating; may require dedicated machinery space.
Cooling relies on axial fans or water‑cooled jackets – blockage or fouling can quickly lead to overheating if not maintained.
IP44 protects against splashing but not full dust ingress; additional sealing may be needed in very dusty compartments.
Maintenance of VPI insulation and moisture‑sensitive bearings demands regular IR testing and bearing temperature monitoring.
Fixed 440 V output may require step‑up transformers for vessels that standardise on higher bus voltages.

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D‑2DNV GLABS

Decision Guide: Choose if you need a high‑capacity (≥2 MVA) auxiliary generator with proven marine durability, Class H insulation and integrated ABB AVR in vessels that can accommodate its size. Avoid if space is at a premium, the ship operates on a higher bus voltage without step‑up gear, or you prefer a lower‑maintenance, air‑cooled unit.

Use Cases: Typically installed as part of the main auxiliary power plant on large merchant ships and cruise vessels to supply hotel loads, cargo handling equipment, and emergency power. Also used on offshore platforms where reliable, high‑temperature capable generation is required.

Manufacturer Datasheet

Datasheet

AMG 2250-440V-60Hz-IP55

· synchronous marine generator

Power (kVA)

2250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density (2.25 MW) suitable for large auxiliary power plants
Robust IP55 housing and Class‑H VPI insulation resist corrosion and moisture
Integrated UNITROL AVR series provides precise voltage regulation and protection limits
Dual axial fans with optional water‑cooling give flexible cooling options
Sealed‑for‑life bearings (frame <400) reduce routine lubrication tasks

Weaknesses

Large physical footprint and weight compared with modular diesel sets of similar rating
Requires skilled personnel for VPI insulation testing and bearing inspection
Fixed 440 V output may need step‑up transformers for ships that operate on higher LV levels
Initial capital cost is higher than comparable low‑power generators
Cooling performance depends on clean air flow; fouling in salt environments can cause overheating

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if you need a high‑output, corrosion‑resistant LV generator with built‑in AVR for large vessels operating in severe salt‑water conditions and you have the space for its footprint. Avoid if vessel weight or volume is at a premium, if you prefer higher voltage (6.6 kV) auxiliary power, or if maintenance resources are limited.

Use Cases: Typically installed as the main auxiliary generator plant on large tankers, cruise ships and offshore support vessels to supply hotel loads, cargo handling equipment and emergency power; also used in dual‑fuel configurations where a stable LV source is required for control systems.

Manufacturer Datasheet

Datasheet

AMG 2250-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

2250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.25 MVA) in a compact LV frame suitable for 690 V shipboard distribution
Robust Class‑H VPI insulation system offering excellent moisture and thermal resistance
Dual axial‑fan cooling with optional water‑cooling, allowing operation from –20 °C to +45 °C and up to 1 000 m altitude
Integrated ABB UNITROL/GEN AVR options for precise voltage regulation and protection (UEL/OEL)
Widely supported by ABB’s global service network and condition‑monitoring tools (LEAP)

Weaknesses

IP23 rating provides only splash protection; not suitable for harshly dusty or fully sealed compartments
LV output (690 V) may require step‑up transformers on vessels that standardise on higher bus voltages
Large physical footprint and weight compared with newer high‑speed diesel generators of similar rating
Maintenance‑intensive insulation testing required in marine humidity environments
Cooling performance can degrade if axial fans become fouled by salt deposits

Typical Vessels: Container ship (large class)Cruise linerOffshore supply vessel / DP vesselLNG carrierBulk carrier with high hotel load

Certifications: IEC 60034‑18‑32 (insulation ageing)DNV GL classification approvalABS approved marine generatorLR (Lloyd’s Register) type approval

Decision Guide: Choose if you need a proven 2.25 MVA LV generator with robust Class‑H insulation, dual cooling options and ABB after‑sales support for large commercial vessels operating in temperate climates. Avoid if the installation requires higher bus voltage without transformation, a fully sealed IP66 enclosure, or minimal footprint and weight are critical.

Use Cases: Typically installed as main auxiliary power on large container ships, cruise ships, offshore DP vessels and LNG carriers to supply propulsion auxiliaries, hotel loads, cargo pumps and dynamic positioning systems. Frequently paired with ABB’s UNITROL AVR and integrated into shipboard condition‑monitoring platforms.

Manufacturer Datasheet

Datasheet

AMG 2250-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

2250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2 250 kVA) in a compact LV frame suitable for main‑auxiliary plant.
Class H vacuum pressure impregnation (VPI) insulation provides excellent moisture resistance and long service life.
Dual axial fan cooling allows flexible air or water‑cooled operation, supporting a wide ambient temperature range (-20 °C to +45 °C).
IP44 enclosure protects against splashing seawater and dust, meeting typical marine installation requirements.
Integrated UNITROL/GEN AVR options give precise voltage regulation and built‑in under/over‑excitation protection.

Weaknesses

Weight and footprint are substantial; installation requires adequate deck space and structural support.
IP44 rating does not protect against full immersion, so additional sealing may be needed in spray‑zone applications.
Requires regular insulation resistance testing (Megger) due to moisture sensitivity of high‑class VPI windings.
Standard output voltage is 690 V; higher system voltages need step‑up transformers, adding cost and losses.
Bearing maintenance can be intensive on frames >400 unless sealed‑for‑life units are specified.

Typical Vessels: Container shipBulk carrierCrude oil tankerLNG/LPG carrierCruise linerOffshore supply vessel

Certifications: DNV GL class approvalABS class approvalIMO D‑2 (electrical equipment)

Decision Guide: Choose if you need a high‑capacity, low‑voltage auxiliary generator with proven moisture‑resistant insulation and flexible cooling for large commercial or offshore vessels. Avoid if deck space is limited, higher voltage directly from the generator is required, or the installation environment exceeds IP44 exposure (e.g., full submersion zones).

Use Cases: The AMG 2250-690V is typically installed as a main‑auxiliary power source on large merchant vessels and offshore platforms, providing shipboard electricity for propulsion auxiliaries, hotel loads, and emergency power. It is also used in cruise ships and LNG carriers where reliable, high‑output generation with robust environmental protection is critical.

Manufacturer Datasheet

Datasheet

AMG 2250-690V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

2250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (2 250 kVA) in a compact LV frame (400‑630) suitable for large vessels
IP55 sealed enclosure provides excellent protection against salt spray and dust
H‑class VPI insulation gives long life and high thermal capability
Flexible cooling options – double axial fans with optional water‑cooling for hot climates
Integrated UNITROL/GEN AVR series with built‑in under/over‑excitation limiters

Weaknesses

Large physical footprint and weight compared with smaller modular generators
Requires skilled maintenance (insulation testing, bearing monitoring) to preserve H‑class life
Double axial fans can generate higher acoustic noise in confined engine rooms
Designed for 50 Hz operation only – not directly suitable for vessels standardized on 60 Hz
Initial capital cost is higher than lower‑rated or less robust alternatives

Typical Vessels: Container shipCruise linerLNG carrierOffshore supply vesselNaval auxiliary / support ship

Certifications: DNV GL class approvalABS class approvalLR (Lloyd's Register) class approvalIEC 60034‑18‑32 complianceIEEE Std 117‑1974

Decision Guide: Choose if: you need a reliable 2.25 MVA generator at 690 V 50 Hz, operate in harsh marine environments, and value long service intervals with H‑class insulation. Avoid if: vessel space or weight is severely limited, the power system runs on 60 Hz, or budget constraints preclude higher upfront cost.

Use Cases: Typically installed as a main auxiliary generator supplying propulsion‑related hotel loads on large ocean‑going vessels, or as an emergency power source where high reliability and IP55 protection against salt water are mandatory. The unit is also used in offshore platforms where robust cooling and vibration resistance are required.

Manufacturer Datasheet

Datasheet

AMG 2250-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

2250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (2.25 MVA) suitable for main hotel load or emergency power on large ships
Robust IP23 enclosure tolerates harsh marine environments while allowing easy access for maintenance
Class H insulation and VPI vacuum‑pressure impregnation provide excellent thermal endurance and moisture resistance
Dual axial fan cooling offers flexibility between air‑only and water‑cooled configurations
Integrated UNITROL AVR series delivers precise voltage regulation with under/over‑excitation protection

Weaknesses

Large physical footprint and high weight require substantial engine room space and structural support
IP23 rating does not protect against total dust ingress; additional sealing may be needed in very dusty installations
Requires skilled personnel for insulation testing (Megger, tan‑delta) and bearing maintenance
Cooling performance can be limited in tropical ambient temperatures above 45 °C without supplemental water cooling
Initial capital cost is higher than smaller modular generators of comparable rating

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vesselFloating production storage and offloading (FPSO) unit

Certifications: IEC 60034-18-32 (insulation aging)IEEE Std 117‑1974DNV class approval for auxiliary generatorsABS approved design

Decision Guide: Choose if you need a reliable >2 MW low‑voltage generator with strong temperature tolerance, integrated AVR and flexible cooling on a vessel that can accommodate its size. Avoid if space, weight or budget constraints are critical, or if a fully dust‑tight (IP54+) enclosure is required for the operating environment.

Use Cases: Typically installed as a main auxiliary generator supplying hotel services, cargo handling equipment, and emergency power on large ocean‑going vessels; also used on offshore platforms where high‑capacity, temperature‑resistant generation is essential.

Manufacturer Datasheet

Datasheet

AMG 2250-690V-60Hz-IP44

· Four‑pole synchronous marine generator

Power (kVA)

2250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.25 MVA) in a compact LV frame (400–630) suitable for medium‑size vessels
Class H insulation allows operation up to +180 °C ambient and provides excellent thermal endurance
IP44 enclosure protects against splashing water and salt spray, meeting harsh marine conditions
Optional dual‑axial fan or water‑cooled variants give flexible cooling solutions
Integrated ABB UNITROL AVR series (1000/GEN) offers precise voltage regulation and built‑in over/under‑excitation protection

Weaknesses

IP44 rating does not protect against heavy dust ingress; higher IP ratings are required for very dusty environments
Physical footprint may be large for vessels with limited engine‑room space
Requires regular insulation resistance testing due to moisture and salt exposure in marine service
Sealed‑for‑life bearings are only available on frames <400; larger frames need periodic greasing
Maximum continuous output is 2.25 MVA, so not suitable for ships needing >3 MVA auxiliary power

Typical Vessels: Offshore supply vessel (OSV)Platform supply vessel (PSV)Ferry / Ro‑RoSmall cruise shipContainer feederBulk carrier (10–30 kt)

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL classificationABS class approvalLloyd's Register approvalIMO D‑2 compliance

Decision Guide: Choose if you need a proven 2.25 MVA auxiliary generator with robust ABB service support, Class H insulation for high temperature tolerance, and an IP44 enclosure suitable for typical marine environments. Avoid if the vessel requires >3 MVA power, a higher dust‑proof rating (e.g., IP55), or has severe space constraints that cannot accommodate the generator frame.

Use Cases: The AMG 2250 is commonly installed as a main auxiliary generator on offshore support vessels and small cruise ships to supply hotel loads, deck machinery, and emergency power. It is also used on ferries and feeder container ships where reliable medium‑size generation and flexible cooling (air or water) are required.

Manufacturer Datasheet

Datasheet

AMG 2250-690V-60Hz-IP55

· synchronous marine generator

Power (kVA)

2250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.25 MVA) in a compact frame suitable for large auxiliary sets
IP55 enclosure provides robust protection against salt spray and dust
Class‑H insulation allows operation up to +180 °C, extending service life in hot climates
Dual cooling options (axial fans with optional water‑cooling) give flexibility for different installation spaces
Integrated ABB UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Physical size and weight are substantial; requires ample engine room space and heavy foundations
Maintenance demands skilled personnel for VPI insulation checks, bearing greasing and AVR servicing
Fixed 690 V output may require additional step‑up transformers on vessels that standardise on higher bus voltages
Initial capital cost is higher than lower‑rated generators of the same family

Typical Vessels: Container ships (≥8,000 TEU)Crude oil and product tankersLNG carriersCruise linersOffshore supply vesselsNaval auxiliary ships

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a reliable >2 MVA auxiliary generator with strong environmental protection, Class‑H insulation and flexible cooling for large ocean‑going vessels. Avoid if the vessel operates on higher bus voltages that would make a 690 V output inefficient, or if space/weight constraints dominate the design.

Use Cases: Main hotel‑load generators on ultra‑large container ships, emergency power sets on tankers and cruise ships, and auxiliary power for offshore support vessels where high reliability and resistance to harsh marine conditions are mandatory.

Manufacturer Datasheet

Datasheet

AMG 2500-400V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (2.5 MVA) in a compact LV frame suitable for large merchant vessels
Robust class‑H vacuum pressure impregnated (VPI) insulation offering excellent moisture resistance and thermal aging performance
Flexible cooling options – dual axial fans with optional water‑cooling – to suit varied climate zones
Integrated ABB UNITROL/GEN AVR families provide precise voltage regulation and built‑in under/over‑excitation protection
Sealed‑for‑life bearing option (frames <400) reduces routine lubrication maintenance

Weaknesses

IP23 rating protects only against solid objects >12.5 mm and water spray; additional sealing may be required in very wet or splash‑prone spaces
Large physical footprint and weight demand dedicated generator room and structural support
Class‑H insulation still requires regular megohm testing to monitor moisture ingress in marine environments
Bearings on larger frames (≥450) are greasable, adding periodic maintenance tasks
Limited to low‑voltage 400 V systems; higher voltage shipboard schemes need step‑up transformers or a different generator series

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>8,000 TEU)Bulk carrierCruise linerOffshore supply vesselLNG carrier with auxiliary power requirement

Certifications: IEC 60034-18-32IEEE Std 117-1974

Decision Guide: Choose if you need a proven, high‑capacity LV synchronous generator with class‑H VPI insulation, flexible air/water cooling and ABB AVR integration for vessels operating at 400 V/50 Hz. Avoid if the installation demands an IP66 enclosure, higher voltage output (>6 kV) or minimal maintenance footprint.

Use Cases: Primary auxiliary power plant on large merchant ships, emergency generator sets for critical shipboard loads, diesel‑electric propulsion support where a stable 400 V supply is required, and shore‑power generation modules on cruise vessels.

Manufacturer Datasheet

Datasheet

AMG 2500-400V-50Hz-IP44

· Four‑pole synchronous marine generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power density – up to 2.5 MVA in a single frame suitable for large ships
Robust marine‑grade protection (IP44) and class H insulation for high temperature operation
VPI vacuum pressure impregnated windings give excellent moisture resistance and long life
Flexible cooling options (dual axial fans, optional water‑cooling) for varied installation conditions
Integrated ABB UNITROL AVR series provides precise voltage regulation and overload protection

Weaknesses

Physical size and weight may exceed space allowances on smaller vessels or retrofits
IP44 rating protects against splashing only; full enclosure not provided for harsh spray zones
Maintenance of VPI‑impregnated windings requires specialized testing (megger, PD) and skilled personnel
Sealed‑for‑life bearings are limited to frames <400; larger frames need greased bearings with regular inspection
Initial capital cost is higher than lower‑power or diesel‑engine integrated gensets

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vesselNaval auxiliary / support ship

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable, high‑output (>2 MVA) synchronous generator with proven ABB durability and flexible cooling for large merchant or offshore vessels. Avoid if vessel space is constrained, lower power (<1 MVA) suffices, or you prefer a fully enclosed unit with minimal maintenance.

Use Cases: Primary auxiliary power plant on large ships, emergency standby generation, shore‑power conversion units on cruise liners and tankers, and dedicated generator sets for offshore platforms where high reliability and marine‑grade protection are essential.

Manufacturer Datasheet

Datasheet

AMG 2500-400V-50Hz-IP55

· marine synchronous generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power rating (2.5 MVA) in a compact LV frame suitable for shipboard installation
IP55 sealed enclosure protects against salt spray and harsh marine environment
Class‑H VPI insulation provides excellent thermal endurance and moisture resistance
Dual axial fans allow both air‑cooling and optional water‑cooling for versatile operating climates
Integrated UNITROL/GEN AVR series offers precise voltage regulation and built‑in over/under‑excitation protection

Weaknesses

Large physical footprint and weight compared with lower‑rated generators, impacting space‑critical vessels
Maintenance of sealed‑for‑life bearings still requires periodic inspection; larger frames need greasable bearings
Standard output voltage (400 V) may require step‑up transformers for ships that operate at higher bus voltages
Water‑cooling option adds plumbing complexity and potential leak points
Initial capital cost is higher than basic open‑frame generators of similar rating

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>8,000 TEU)Cruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: ABSDNV GLLloyd's RegisterIEC 60034-18-32IEEE Std 117‑1974

Decision Guide: Choose if you need a proven, high‑output auxiliary generator with marine‑grade protection, flexible cooling and integrated AVR for large commercial vessels. Avoid if vessel space or weight limits are critical, or if the ship requires direct high‑voltage output without additional transformers.

Use Cases: Typically installed as the main auxiliary genset on large tankers, container ships and cruise vessels to supply hotel loads, cargo handling equipment and emergency power; also used in offshore support ships where robust cooling and corrosion resistance are essential.

Manufacturer Datasheet

Datasheet

AMG 2500-400V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.5 MVA) in a compact LV frame suitable for large vessels
VPI H‑class insulation provides excellent moisture resistance and long life
Dual cooling options (air‑only or water‑assisted) allow flexibility in installation
Integrated UNITROL AVR with UEL/OEL limits ensures stable voltage under load changes
Sealed‑for‑life bearing option reduces routine maintenance for frames <400

Weaknesses

IP23 enclosure offers only splash protection; not dust‑tight or fully watertight
Size and weight are substantial, requiring dedicated engine room space
Requires regular insulation testing (Megger, PD) due to marine humidity exposure
Initial capital cost is higher than comparable low‑power generators
Limited to LV applications – unsuitable for vessels needing HV (>690 V) generation

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)Naval auxiliary generator

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974DNV class approvalABS classificationLR (Lloyd's Register) certificationIMO Type Approval (SOLAS)

Decision Guide: Choose if: you need a reliable 2.5 MVA LV generator with robust H‑class VPI insulation, dual cooling flexibility and integrated AVR for large commercial or offshore vessels. Avoid if: the installation space is highly constrained, a higher voltage system (>690 V) is required, or a fully dust‑tight (IP54+) enclosure is mandatory.

Use Cases: Typically installed as main auxiliary power on tankers, container ships and cruise liners to supply hotel loads, cargo handling equipment and emergency systems. Also used on offshore platforms and naval vessels where high‑power, low‑voltage generation with strong corrosion resistance is essential.

Manufacturer Datasheet

Datasheet

AMG 2500-400V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.5 MVA) in a compact LV frame suitable for shipboard installation
VPI (vacuum pressure impregnation) H‑class insulation provides excellent moisture resistance and long life in salty environments
Dual cooling options (axial fans with optional water spray) allow operation from –20 °C to +45 °C and up to 1000 m altitude
Integrated UNITROL AVR delivers precise voltage regulation, under/over‑excitation protection and fault ride‑through
Sealed‑for‑life bearing option (frame <400) reduces routine lubrication maintenance

Weaknesses

IP44 rating protects against splashing water only; additional sealing may be required in heavy spray zones
Physical footprint and weight are significant for vessels with tight machinery spaces
Requires a step‑up transformer to supply standard shipboard distribution voltages above 400 V
Advanced insulation testing (partial discharge, tan‑delta) is needed periodically, adding inspection complexity
Initial capital cost is higher than basic low‑cost alternators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel (OSV)LNG/LPG carrier

Certifications: DNV GL class approvalABS class approvalLloyd's Register class approvalIEC 60034‑18‑32 complianceIEEE Std 117‑1974 compliance

Decision Guide: Choose if you need a reliable 2.5 MVA LV generator with robust moisture‑resistant insulation, dual cooling capability and integrated AVR for large commercial vessels operating in harsh marine climates. Avoid if space or weight constraints are critical, the vessel requires direct high‑voltage generation without a transformer, or budget limits preclude premium class‑approved equipment.

Use Cases: Typically installed as an auxiliary power source on large merchant ships to run hotel loads, cargo handling gear and emergency systems; also used on offshore platforms and cruise ships where redundancy and resistance to salt‑water corrosion are essential.

Manufacturer Datasheet

Datasheet

AMG 2500-400V-60Hz-IP55

· synchronous marine generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous power output (2.5 MVA) suitable for large auxiliary or emergency loads
IP55 sealed enclosure resists salt spray and dust, ideal for offshore service
Class H VPI‑impregnated winding provides excellent thermal endurance and insulation life
Dual axial fans with optional water cooling give flexible cooling options
ABB UNITROL 1000/GEN AVR family offers precise voltage regulation and built‑in over/under‑excitation protection

Weaknesses

Large physical footprint and weight may limit installation on space‑constrained vessels
Frames above 450 kVA require greased bearings, increasing maintenance effort compared with sealed‑for‑life units
Cooling system complexity (air or water) adds auxiliary piping and control requirements
Standard output voltage of 400 V may necessitate step‑up transformers for ships using higher bus voltages
Higher upfront capital cost relative to lower‑rated generators from competing manufacturers

Typical Vessels: VLCC / Aframax TankerContainer Ship (≥10,000 TEU)Cruise ShipOffshore Supply VesselLNG CarrierNaval Auxiliary

Certifications: IMO D‑2 Type ApprovalDNV ClassificationABS ClassificationIEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974

Decision Guide: Choose if you need a robust 2.5 MVA generator for vessels with 400 V bus systems, operating in high‑salinity or dusty offshore conditions, and you value ABB’s global service network. Avoid if vessel space, weight limits, or lower power requirements make a smaller, sealed‑for‑life unit more appropriate, or if you prefer an integrated diesel‑generator package from another OEM.

Use Cases: Typically installed as the main auxiliary generator on large tankers and cruise ships to supply propulsion auxiliaries and hotel loads; used as emergency power source on offshore platforms and DP vessels; employed where redundancy and high reliability are critical, such as in LNG carrier cargo handling systems or naval support ships.

Manufacturer Datasheet

Datasheet

AMG 2500-440V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2500 kVA suitable for large vessels
Class‑H VPI insulated windings provide excellent thermal endurance
Dual axial fans with optional water cooling give flexible cooling options
Integrated UNITROL/GEN AVR series offers precise voltage regulation and protection limits
Modular frame sizes (LV 400‑630) allow installation on a range of hull layouts

Weaknesses

IP23 rating only protects against large solid objects; not dust‑tight or splash‑proof for harsh spray zones
Large physical footprint and weight require substantial space and structural support
Maintenance intensive: insulation resistance, bearing lubrication and AVR checks are mandatory in marine service
Cooling performance can be limited in very hot climates without water‑cooling retrofit
Higher initial cost compared with lower‑power diesel generator sets

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if the vessel needs a reliable >2 MW auxiliary power source, values high‑temperature insulation and flexible cooling, and can accommodate the generator’s size. Avoid if space is at a premium, a higher ingress protection rating (IP55+) is required, or operating budgets favour lower‑power, less maintenance‑intensive sets.

Use Cases: The AMG 2500 series is typically installed as main service generators on large ocean‑going ships to supply hotel loads, cargo handling equipment and dynamic positioning systems, and also serves as emergency power units meeting IMO requirements for redundancy.

Manufacturer Datasheet

Datasheet

AMG 2500-440V-50Hz-IP44

· synchronous marine generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2 500 kVA) suitable for large auxiliary loads
VPI vacuum‑pressure impregnated windings with Class‑H insulation give excellent thermal endurance
IP44 enclosure protects against splashing seawater and dust, ideal for deck‑mounted installations
Flexible cooling options (dual axial fans or water‑cooled) allow adaptation to shipboard ventilation conditions
Integrated ABB UNITROL/GEN AVR families provide precise voltage regulation and built‑in over/under‑excitation protection

Weaknesses

Large physical footprint and weight require substantial installation space and structural support
IP44 rating does not protect against full immersion; additional sealing may be needed in very wet compartments
Maintenance of sealed‑for‑life bearings still demands periodic vibration and temperature monitoring
Standard output voltage (440 V) often requires step‑up transformers for high‑voltage ship grids
Higher initial capital cost compared with lower‑rated or non‑ABB alternatives

Typical Vessels: Crude oil tankerLNG carrierContainer vessel (>8,000 TEU)Cruise shipOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a reliable >2 MVA generator with robust marine‑grade protection, have space for a large unit and already use ABB power management systems. Avoid if deck space is limited, the vessel operates on a high‑voltage bus without step‑up transformers, or budget constraints preclude a premium‑priced solution.

Use Cases: The AMG 2500-440V-50Hz-IP44 is typically installed as an auxiliary generator for main‑propulsion support, hotel load supply on cruise ships, emergency power on tankers and offshore platforms, and as part of redundant power sets on large commercial vessels where high reliability and flexible cooling are essential.

Manufacturer Datasheet

Datasheet

AMG 2500-440V-50Hz-IP55

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

IP55 sealed enclosure resists salt spray and dust, extending service life in corrosive marine atmospheres.
Class H insulation allows operation up to +180 °C hot‑spot temperature, suitable for high ambient temperatures (+45 °C) and altitude (up to 1000 m).
Dual axial‑fan cooling with optional water/air configuration provides flexible thermal management.
Integrated UNITROL AVR (U/Hz, UEL/OEL) delivers stable voltage regulation across load variations.
Modular frame sizes (400–630 mm) and bearing options (sealed‑for‑life or greasable) simplify installation on a range of vessel layouts.

Weaknesses

Large physical footprint and weight require substantial engine‑room space and robust mounting structures.
Maintenance of the VPI‑impregnated windings demands specialized insulation testing equipment and skilled personnel.
Dual‑fan cooling system is sensitive to blockage by salt deposits; regular cleaning is mandatory.
Higher upfront capital cost compared with lower‑power or less heavily protected generators.
Bearing lubrication must be monitored on greasable frames (≥450 mm), adding routine maintenance tasks.

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Certifications: IMO D-2DNV GL Approval

Decision Guide: Choose if you need a robust >2 MW auxiliary power source for large vessels operating in hot, humid or high‑altitude regions and can accommodate the generator’s size and cooling requirements. Avoid if vessel space, weight limits, or budget constraints favour smaller, lower‑cost generators.

Use Cases: Main auxiliary power plant on large tankers and cruise ships, emergency generator sets for critical safety systems, shore‑power support on offshore platforms, and high‑capacity cargo pump drives on LNG carriers.

Manufacturer Datasheet

Datasheet

AMG 2500-440V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.5 MVA) in a compact frame suitable for large vessels
Class H VPI insulated windings allow operation at elevated temperatures and improve longevity
Flexible cooling options – axial fans with optional water‑cooling – adapt to varied ambient conditions
Integrated UNITROL AVR series provides precise voltage regulation and built‑in under/over‑excitation limits
Modular frame sizes (LV standard 400–5000 kVA) simplify installation and spare‑part logistics

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and water spray; not fully watertight for harsh marine exposure
Large physical footprint and weight require substantial deck space and structural support
Some frame sizes (e.g., Frame 450) need periodic bearing greasing, increasing maintenance effort
Higher initial capital cost compared with lower‑rated generators or diesel‑alternator sets
Designed for 60 Hz systems only; not directly compatible with vessels operating on 50 Hz without redesign

Typical Vessels: Cruise shipsLNG carriersOffshore support vessels (OSVs)Naval auxiliary shipsLarge container and tanker vessels

Decision Guide: Choose if you need a reliable 2.5 MVA shipboard power source with Class H insulation, flexible cooling and integrated UNITROL AVR for stable voltage on 60 Hz vessels. Avoid if the installation requires a fully sealed IP55/56 enclosure, lower weight/size constraints, or operation on 50 Hz systems.

Use Cases: Main auxiliary power plant on large passenger ships, emergency generator sets on tankers and bulk carriers, shore‑power generation for cruise liners docking in ports, and high‑capacity electrical supply for offshore platforms where robust temperature tolerance and precise voltage control are critical.

Manufacturer Datasheet

Datasheet

AMG 2500-440V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2.5 MW suitable for large hotel‑load or DP auxiliaries
VPI (vacuum pressure impregnation) insulation class H provides excellent moisture resistance and long life in salty environments
Dual axial fans allow flexible air‑cooling; water‑cooling option available for hot climates
Integrated UNITROL AVR with UEL/OEL limits ensures stable voltage regulation under load changes
Designed to IEC 60034‑18‑32 and IEEE Std 117 standards, giving proven compliance with classification societies

Weaknesses

IP44 enclosure protects against splashing water only; not suitable for fully exposed spray zones without additional shielding
Large physical footprint and weight require dedicated generator room and heavy foundations
Bearings on frames above 450 kW are greased, demanding periodic re‑greasing and maintenance
Higher initial capital cost compared with lower‑power modular generators
Fixed 440 V output may need step‑up transformers for vessels standardized on higher bus voltages

Typical Vessels: Very Large Crude Carrier (VLCC)LNG carrierCruise shipOffshore supply vessel (OSV)Container ship >10 000 TEU

Certifications: IEC 60034‑18‑32 (insulation ageing)IEEE Std 117‑1974DNV GL Type ApprovalABS Approved Marine EquipmentLloyd's Register Classification

Decision Guide: Choose if you need a proven, high‑power auxiliary generator with robust insulation and integrated AVR for large vessels that have space for a dedicated engine room and can accommodate routine bearing greasing. Avoid if the installation area is confined, requires a fully sealed (IP66+) enclosure, or if lower upfront cost and minimal maintenance are top priorities.

Use Cases: Typically installed as the main auxiliary generator on ultra‑large tankers, LNG carriers and cruise ships to supply hotel load, cargo handling equipment and dynamic positioning systems; also used as emergency power sources on vessels where redundancy of >2 MW is mandated by classification societies.

Manufacturer Datasheet

Datasheet

AMG 2500-440V-60Hz-IP55

· marine synchronous generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.5 MVA) in a compact frame suitable for LV marine applications
IP55 sealed enclosure protects against dust and water spray in harsh sea environments
Class‑H VPI insulation provides excellent thermal endurance and moisture resistance
Dual axial‑fan cooling allows flexible air or water cooling depending on installation
Integrated UNITROL/GEN AVR series offers precise voltage regulation and protection functions

Weaknesses

Physical size and weight are significant; may limit use in vessels with tight machinery spaces
Maintenance of the VPI insulation system requires specialized testing (megger, PD) and skilled personnel
Standard output is 440 V; higher shipboard voltages need additional step‑up transformers
Initial capital cost is higher than lower‑rated generators from some competitors
Cooling performance can be affected by extreme ambient temperatures or blocked airflow

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>8,000 TEU)Bulk carriersCruise linersOffshore supply vesselsLNG carriers

Certifications: IEC 60034-18-32IEEE Std 117‑1974

Decision Guide: Choose if you need a proven, high‑output auxiliary generator that can withstand marine corrosion and moisture, with built‑in advanced AVR control. Avoid if vessel space or weight is at a premium, or if the ship’s electrical system requires a higher primary voltage without additional transformation.

Use Cases: Typically installed as the main auxiliary power source on large ocean‑going vessels, providing electricity for hotel loads, cargo handling equipment, and emergency power. Also used on offshore platforms where robust, low‑maintenance generation is required in salty, humid conditions.

Manufacturer Datasheet

Datasheet

AMG 2500-690V-50Hz-IP23

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.5 MVA) in a compact frame suitable for LV marine installations
Class H VPI insulation provides excellent resistance to moisture and thermal ageing
Dual cooling options (axial fans with optional water‑cooling) allow operation in hot or humid climates
Integrated ABB UNITROL 1000/GEN AVR series offers precise voltage regulation and protection functions
Proven ABB service network and condition monitoring (ABB Ability LEAP) for predictive maintenance

Weaknesses

IP23 enclosure gives limited protection against water ingress; not suitable for harsh spray zones without additional shielding
Large physical footprint and weight compared with smaller generator sets, impacting space‑critical vessels
Bearings may require periodic greasing (non‑sealed frames) increasing maintenance workload
Complex VPI insulation system demands specialised testing (partial discharge, tan‑delta) for condition assessment
Higher capital cost relative to conventional diesel generators of similar rating

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974Classified by major societies (DNV, ABS, LR) – compliance confirmed in ABB documentation

Decision Guide: Choose if you need a robust >2 MVA auxiliary or emergency power source with high insulation class and dual cooling for hot/marine environments, and you have the space for an IP23‑rated unit. Avoid if the installation requires higher ingress protection (e.g., IP55), very tight weight/space constraints, or if you prefer a fully sealed bearing design to minimise routine maintenance.

Use Cases: Typically installed as the main auxiliary generator on large ocean‑going vessels to supply hotel loads, cargo handling equipment and emergency power; also used on offshore platforms where reliable high‑capacity generation and flexible cooling are critical.

Manufacturer Datasheet

Datasheet

AMG 2500-690V-50Hz-IP44

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.5 MVA) in a compact LV frame suitable for shipboard installation
Class H vacuum pressure impregnation (VPI) insulation provides excellent moisture and thermal resistance
Dual cooling options (air‑flow with axial fans or water‑cooled) allow adaptation to varying ambient conditions
Integrated UNITROL AVR system offers precise voltage regulation and built‑in under/over‑excitation protection
IEC 60034‑18‑32 compliant design ensures long insulation life in harsh marine environments

Weaknesses

Large physical footprint and weight require substantial deck space and structural support
Bearings are not sealed‑for‑life on the highest frame sizes, necessitating periodic greasing and inspection
IP44 rating limits use to protected compartments; additional sealing needed for exposed locations
Maintenance intensive: insulation resistance testing and vibration monitoring are mandatory in saltwater service
Initial capital cost is higher than smaller, lower‑power generators

Typical Vessels: Container ship (≥10 000 TEU)Cruise linerLNG carrierOffshore supply vesselNaval auxiliary / replenishment ship

Certifications: IEC 60034‑18‑32IEEE Std 117‑1974DNV GL Marine Generator Class

Decision Guide: Choose if you need a robust, high‑capacity LV generator for main‑auxiliary power on large vessels and can accommodate the space, weight and maintenance regime. Avoid if deck space is limited, you require a sealed‑for‑life bearing design, or the installation environment exceeds IP44 protection.

Use Cases: Typically installed as the primary auxiliary generator supplying hotel load, propulsion auxiliaries, and emergency power on large commercial ships; also used to support dynamic positioning systems on offshore vessels where reliable high‑power generation is critical.

Manufacturer Datasheet

Datasheet

AMG 2500-690V-50Hz-IP55

· low‑voltage synchronous marine generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output (2.5 MVA) suitable for large hotel‑load or emergency power requirements
IP55 sealed enclosure and Class H insulation provide strong resistance to salt, moisture and high ambient temperatures
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation in a wide temperature range
Integrated ABB UNITROL AVR series offers precise voltage regulation and built‑in under/over‑excitation protection
ABB global service network and proven field experience simplify maintenance and spare‑parts logistics

Weaknesses

Large physical footprint (frame 400–630) may limit installation in space‑constrained engine rooms
Heavy weight typical of high‑power LV generators increases handling and structural requirements
Requires diligent moisture‑control inspections because VPI insulation can be vulnerable to ingress if seals degrade
Water‑cooling variant adds complexity (pumps, heat exchangers) and potential leak points
Higher capital cost compared with smaller or lower‑spec marine alternators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrierNaval auxiliary

Certifications: IEC 60034-18-32 (insulation ageing)IEEE Std 117‑1974 (marine generator safety)

Decision Guide: Choose if you need a high‑power, low‑voltage auxiliary generator with proven durability in harsh marine environments and have sufficient engine‑room space for a large frame. Avoid if vessel size constraints, weight limits, or a requirement for higher voltage (>690 V) make a smaller or HV unit more appropriate.

Use Cases: Typically installed as the main hotel‑load generator on large tankers, cruise ships and offshore supply vessels, or as an emergency power source on platforms where reliable, high‑capacity electricity is critical. The flexible cooling system allows operation in tropical or arctic climates while maintaining temperature limits for the stator windings.

Manufacturer Datasheet

Datasheet

AMG 2500-690V-60Hz-IP23

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High thermal capability – Class H/VPI insulation allows operation up to +180 °C hot‑spot temperature.
Flexible cooling – optional double axial fans or water‑cooled circuit for a wide ambient range (-20 °C to +45 °C).
IP23 splash‑proof enclosure suitable for deck installation while protecting against salt spray.
Integrated UNITROL AVR options (1000 series) provide precise voltage regulation and overload protection.
Compliant with IEC 60034‑18‑32, IEEE 117‑1974 and major classification societies, simplifying approval processes.

Weaknesses

Large footprint and high weight; requires substantial installation space and structural support.
Bearings for frames >400 are greasable, demanding regular maintenance and skilled personnel.
IP23 offers only splash protection – not dust‑tight – limiting use in highly contaminated environments.
Fixed 690 V output may necessitate step‑up transformers on vessels that operate at higher bus voltages.
Higher initial capital cost compared with lower‑power or modular generator sets.

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsContainer ships >10,000 TEUOffshore supply vessels

Certifications: IMO D-2IEC 60034‑18‑32IEEE Std 117‑1974DNV GL approval

Decision Guide: Choose if you need a robust 2.5 MVA generator with high thermal margin, dual cooling options and proven classification approvals for large ocean‑going vessels. Avoid if space is limited, the crew lacks routine bearing greasing capability, or the ship requires higher bus voltage without additional transformers.

Use Cases: Primary ship service power on large tankers, LNG carriers and cruise ships; also used as emergency generators on high‑power vessels where continuous, reliable electricity for hotel loads, cargo handling equipment and propulsion auxiliaries is critical. The unit can be integrated into shore‑power systems when combined with appropriate transformers.

Manufacturer Datasheet

Datasheet

AMG 2500-690V-60Hz-IP44

· Synchronous marine generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High continuous output of 2500 kVA suitable for main ship service loads
IP44 sealed enclosure provides protection against splashing seawater and dust in harsh marine environments
Class‑H VPI insulation offers excellent thermal endurance and moisture resistance
Flexible cooling options (dual axial fans with optional water‑cooling) allow operation from –20 °C to +45 °C and up to 1000 m altitude
Integrated UNITROL or GEN AVR families give precise voltage regulation and built‑in under/over‑excitation protection

Weaknesses

Large physical footprint and weight typical of high‑power generators may limit installation space on smaller vessels
IP44 rating does not protect against full immersion; additional sealing may be required in heavy spray zones
Maintenance intensive – insulation resistance, bearing temperature and vibration must be monitored regularly to avoid moisture‑induced failures
Fixed 690 V output may require step‑up transformers for ships that operate on higher voltage distribution systems
Fan‑based cooling can be compromised by salt deposits; regular cleaning is mandatory

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: IEC 60034-18-32

Decision Guide: Choose if you need a proven, high‑power (≥2.5 MVA) generator with robust marine‑grade protection, flexible cooling and integrated AVR for main propulsion or hotel load support on large commercial vessels. Avoid if vessel size or weight constraints are critical, if a higher voltage output is required without additional transformers, or if operating conditions demand full immersion protection beyond IP44.

Use Cases: The AMG 2500 series is commonly installed as the primary ship service generator on tankers and container ships, providing electricity for propulsion auxiliaries, cargo handling equipment, and hotel services. It is also used on cruise ships and offshore support vessels where reliable, high‑capacity power with strong environmental sealing is essential.

Manufacturer Datasheet

Datasheet

AMG 2500-690V-60Hz-IP55

· synchronous marine generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP55

Insulation Class

Technical Specifications

Leistungsbereich LV: 14 kVA - 5000 kVA; Spannungen 380-690 V (50/60 Hz)
Leistungsbereich HV: bis 63 MVA; Spannungen bis 15 kV (50/60 Hz)
Rahmengroessen: LV: 180-630; HV: 500-2500; Pedestal: 1250-2500
Isolationssystem: VPI (vacuum pressure impregnation) class H/F for stator and rotor
Wicklung: Polyester-imid resin with high dielectric and moisture resistance
Kuehlung: Doppel-Axialventilatoren, Wasser-/Luftkuehlung moeglich; Umgebungsbereich -20°C bis +45°C, Hoehe bis 1000m
Lagerung: Sealed-for-life (frame <400) or re-lubricated (frame 450); pedal bearing design for larger frames
Avr-system: UNITROL 1000 series or GEN06/GEN08 AVR; 100 kVA - 80 MVA; U/Hz, UEL, OEL limiter
Schutzstandard: IEC 60034-18-32 fuer Isolationsalterung; IEEE Std 117-1974; Klassifizierungsgesellschaften zertifiziert

Product Lines

AMG Synchronous Generator Series (14 kVA - 2600 kVA LV; up to 63 MVA HV)
LV Standard Marine Generators (400-5000 kVA, Frame 400-630)
LV Modular Marine Generators (560-2400 kVA, Frame 400-450)
HV Pedestal Bearing Generators (up to 60 MVA, Frame 1250-2500)
Shaft Generators (Permanent Magnet, up to 4 MW)

Common Failures & Inspection Points

Area: Winding insulation condition deteriorated by moisture, contamination, thermal aging or mechanical damage.
Check: Insulation resistance (IR) test with megohmmeter (Megger): apply DC voltage approx. 500V between winding and ground. Measure leakage current. Minimum requirements per maritime regulations: >2 MΩ (up to 5A); >1 MΩ (10A); >100 kΩ (100A); >25 kΩ (>200A). Normalize measured values to 40°C (IEEE 43-2013). Perform trend analysis over time. Disconnect AVR before test (DAR method). Check surface, generator and environment for dryness before test (maritime humidity).
Area: Winding damaged or fatigue-cracked by moisture, salt corrosion, vibration in marine environment.
Check: Visually inspect operating condition of footings and bearing shells; check bearing lubrication and temperature (document D-end and N-end separately); measure surface temperatures with thermometer or IR camera. Measure operating vibration (mm/sec or µm); record deviating values. For regreasing bearings, top up grease per manufacturer specification. Check tightness of bearing shields against salt water and moisture.
Area: Stator winding damaged by aging or moisture ingress due to inadequate VPI quality.
Check: Visual inspection of winding for cracks, burn marks, discoloration, loose connections. Perform resistance measurement of insulating material. Perform tan-delta & capacitance measurements (partial discharge analysis) to detect lamination or corona damage (ABB Ability LEAP program). Assess insulation system condition (VPI impregnation). Measurement duration approx. 4-6 hours.
Area: AVR (UNITROL 1000/GEN series) malfunction due to moisture, salt corrosion or aging; voltage regulation faulty.
Check: Visually inspect AVR units for corrosion, moisture ingress, loose contacts (salt water environment). Check voltage output on AVR display or meter. Perform AVR test program: verify setpoint voltage, test response to load change, test UEL/OEL (under-/overexcitation limiter) function. Check wiring and connectors for corrosion. Solvent cleaning if necessary. Secure replacement AVR unit.
Area: Cooling inadequate: air flow blocked, fan fouled/damaged, water cooling leaking or corroded.
Check: Inspect fan blades for salt deposits, corrosion, mechanical damage. Clean air channels and cooling flanges (remove salt spray deposits). Check water cooler for leaks, corrosion, mineral deposits (for water-cooled variants). Measure temperature rise during operation: stator winding U/T1, V/T2, W/T3; bearing shells D-end and N-end. Document ambient temperature. Should be >5°C, relative humidity <75%; keep machine temperature >= dew point. Clear cooling before restart.
Area: Commissioning faulty: bolts not correctly tightened, cable connections leaking/corroded, bearings not lubricated, overall condition not certified.
Check: Perform torque check on fastening bolts (manufacturer specification); loosen/reposition if necessary. Inspect power cable connections for visible corrosion, loose contact, deformation. Verify bearing lubrication before start (regreasable bearings). Consult commissioning report from Annex 5 of AMG Manual. Verify all settings again on site. Perform voltage/current measurements. Test safety devices. Complete and sign commissioning test protocol.

Type—universal inspection/service points for power generation (ABB Marine, Mega-Swarm 2026-06). Per-model specs not auto-filled.

Strengths

High power output (2.5 MVA) in a compact LV frame suitable for large vessels
IP55 sealed enclosure resists salt spray, dust and moisture
Class H VPI insulation provides excellent thermal endurance and longevity
Flexible cooling options (dual axial fans with optional water‑cooling) for varied climate zones
Integrated ABB UNITROL/GEN AVR series offering precise voltage regulation and protection limits

Weaknesses

Large physical footprint and weight compared with medium‑size generators (requires adequate space)
Requires skilled maintenance of VPI insulation and bearing lubrication to avoid moisture‑related failures
LV output (690 V) may need step‑up transformation for ships that operate on higher bus voltages
Initial capital cost is higher than basic low‑cost alternatives

Typical Vessels: Container shipCruise linerLNG carrierOffshore supply vesselDP2/DP3 platform support vesselNaval auxiliary ship

Certifications: DNV GLABSLRIEC 60034-18-32IEEE Std 117‑1974

Decision Guide: Choose if you need a reliable 2.5 MVA LV generator with strong environmental protection, ABB service support and integrated AVR for high‑power hotel or propulsion auxiliary loads. Avoid if vessel design limits space/weight severely, requires direct high‑voltage generation without step‑up transformers, or budget constraints preclude premium equipment.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels to supply hotel services, emergency power and DP support; also used in naval platforms where ruggedness and redundancy are critical.

Manufacturer Datasheet

Datasheet

Leroy-Somer

204

LSA 42.3 75kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption for auxiliary power.
Robust cast‑iron frame and insulation class H tolerate high operating temperatures.
Compact IP23 enclosure fits indoor engine rooms while protecting against solid objects.
Short‑time overload capability up to 150% of rated load.
Proven reliability from a long‑standing marine generator manufacturer.

Weaknesses

75 kVA rating may be insufficient for larger vessels or high hotel loads.
IP23 protection does not guard against water spray; unsuitable for exposed installations.
Relatively heavy compared with modern aluminium‑cased generators.
Requires a dedicated 400 V three‑phase supply and associated control gear.
Spare parts availability can be limited in remote ports.

Typical Vessels: Coastal cargo vesselsFerriesOffshore support vessels (OSVs)Patrol boatsYachts

Decision Guide: Choose if you need a reliable, compact 75 kVA auxiliary generator for an indoor engine room on small‑to‑medium vessels and value the durability of class H insulation. Avoid if the vessel requires higher power output, outdoor mounting with higher IP protection, or strict weight constraints.

Use Cases: Commonly installed as an auxiliary or emergency generator to supply hotel loads, navigation equipment, lighting, and start‑up power for main propulsion engines on coastal traders, ferries, offshore support ships, and patrol craft.

Datasheet

LSA 42.3 75kVA 400V 60Hz unverified

· low-speed marine alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) provides excellent temperature resistance and longer service life.
Compact IP23 enclosure fits well in limited engine‑room spaces while protecting against dust and light spray.
Standard 400 V/60 Hz output matches most shipboard electrical systems, simplifying integration.
Four‑pole design yields a moderate rotational speed (1500 rpm) reducing wear on bearings and improving reliability.

Weaknesses

IP23 rating is not suitable for exposed or wet locations; requires dry, ventilated installation.
75 kVA output may be insufficient for larger vessels with high hotel‑load demands.
Limited to 60 Hz operation, making it unsuitable for ships that operate on 50 Hz systems without a frequency converter.
No built‑in automatic voltage regulator (AVR) information; external AVR may be required.

Typical Vessels: Coastal cargo vesselsOffshore supply vesselsFerries and small cruise shipsYachts and luxury motorboatsWorkboats with modest auxiliary power needs

Decision Guide: Choose this alternator if you need a reliable, compact 75 kVA source for 400 V/60 Hz systems on vessels where the generator can be installed in a dry, ventilated space. It is ideal when high thermal tolerance (class H) and moderate speed are priorities. Avoid it if the vessel requires higher power output, operation at 50 Hz, or exposure to harsh weather that demands an IP44+ enclosure.

Use Cases: Commonly deployed as an auxiliary generator supplying hotel loads, lighting, navigation equipment, and small cargo‑handling gear on coastal tankers, offshore supply ships, and ferries. Also used as a standby emergency power source where space is limited and the environment is controlled.

Datasheet

LSA 42.3 75kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Leroy‑Somer reliability and global support network
Compact IP23 enclosure suitable for typical engine room environments
Class H insulation allows operation at elevated temperatures up to ~180 °C
Four‑pole design provides stable frequency and good torque characteristics
75 kVA rating matches the auxiliary power demand of many offshore supply and coastal vessels

Weaknesses

Limited to 440 V / 50 Hz – not directly compatible with 60 Hz or higher voltage systems
IP23 protection is only splash‑proof; harsher marine conditions may require IP55+ enclosures
Power output may be insufficient for larger tankers, cruise ships or vessels with high‑power DP requirements
External exciter (if brushless) adds a component that must be maintained separately
Weight and size are higher than some newer compact permanent‑magnet generators

Typical Vessels: Offshore supply vesselCoastal cargo shipSmall ferryPatrol boatLarge fishing vessel

Decision Guide: Choose if you need a reliable, mid‑range 75 kVA generator for 50 Hz systems on vessels where space is limited but standard IP23 protection suffices. Avoid if the installation requires 60 Hz operation, higher power output, or a higher ingress protection rating for extreme marine environments.

Use Cases: Provides ship service power for lighting, HVAC, cargo handling gear and auxiliary equipment; can serve as an emergency standby generator on offshore platforms or small passenger vessels where continuous, dependable electricity is critical.

Datasheet

LSA 42.3 75kVA 440V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and robust class‑H insulation suitable for elevated temperature environments
Compact IP23 enclosure saves space in confined engine‑room layouts
Four‑pole design provides smooth torque at the typical low speeds of marine prime movers
Proven Leroy‑Somer reliability with a long service history in maritime applications

Weaknesses

IP23 rating offers limited protection against water and fine dust; additional sealing may be required for harsh sea‑water exposure
Fixed 60 Hz output limits use on vessels that operate on 50 Hz power systems
No built‑in cooling fan; relies on external ventilation which must be properly designed

Typical Vessels: General cargo shipContainer vesselMedium‑size tankerOffshore supply vesselFerry

Decision Guide: Choose if you need a compact, high‑temperature‑rated 75 kVA brushless alternator for a 60 Hz auxiliary power system and have adequate engine‑room ventilation. Avoid if the installation requires a higher IP rating (e.g., IP55) or must operate on a 50 Hz grid.

Use Cases: Commonly installed as an auxiliary generator to supply ship service loads such as lighting, HVAC, cargo pumps, and navigation equipment, or as an emergency power source on medium‑sized commercial vessels.

Datasheet

LSA 42.3 75kVA 690V 50Hz unverified

· synchronous marine alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation tolerates high ambient temperatures and continuous overloads
IP23 enclosure protects against splashing water and dust, suitable for most engine‑room locations
Four‑pole design delivers stable 50 Hz output at the standard 690 V bus voltage
Compact footprint fits into limited engine‑room spaces on medium‑size vessels
Leroy‑Somer’s global service network ensures spare parts and technical support

Weaknesses

IP23 rating may be inadequate for areas exposed to heavy spray or direct immersion, requiring additional protection
Maximum output of 75 kVA limits use on larger ships with higher auxiliary power demand
External cooling system is required; the unit does not include an integrated water‑cooling package
If a brushless version is needed, it may require an extra exciter generator increasing overall cost and space

Typical Vessels: Offshore supply vesselPlatform support vesselProduct tanker (small to medium size)Container feeder shipResearch or survey vessel

Decision Guide: Choose if you need a proven 75 kVA auxiliary generator for vessels with moderate power demand, limited engine‑room space, and operation in warm climates where class H insulation is beneficial. Avoid if the installation requires higher IP protection (e.g., IP55), larger power capacity, or an integrated cooling solution.

Use Cases: Commonly installed as a shipboard auxiliary generator to supply hotel loads, navigation equipment, cargo handling systems, and emergency power on medium‑size commercial vessels operating in coastal or offshore environments.

Datasheet

LSA 42.3 75kVA 690V 60Hz unverified

· synchronous alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and robust construction typical of Leroy‑Somer marine units
Compact size with a 4‑pole design delivering stable 60 Hz output
H‑class insulation provides good thermal endurance for overload periods
IP23 enclosure suitable for indoor installation in engine rooms or generator compartments
Proven reliability and long service life in commercial fleets

Weaknesses

IP23 rating offers limited protection against water spray; not ideal for exposed locations
Fixed 690 V output may require additional transformers for vessels using other voltage levels
Noise level can be moderate; may need acoustic treatment in passenger‑focused ships
Designed for 60 Hz only, unsuitable for regions or vessels requiring 50 Hz operation

Typical Vessels: Platform Supply VesselOffshore Support VesselSmall to medium TankerContainer feederCruise ship auxiliary system (hotel load)Fishing vessel with high‑power electronics

Decision Guide: Choose if you need a compact, reliable 75 kVA generator for indoor installation on vessels operating at 60 Hz and can accommodate the IP23 protection level. Avoid if your ship requires higher voltage outputs, stricter ingress protection (e.g., IP44+), or operation at 50 Hz.

Use Cases: Typically installed as an auxiliary or standby generator to supply navigation equipment, cargo handling gear, hotel services, and emergency power on offshore support vessels and smaller commercial ships where space is limited and a proven brand is preferred.

Datasheet

LSA 42.3 100kVA 400V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class‑H insulation allows higher operating temperatures and longer life
Brushless design eliminates rotor brushes, reducing maintenance intervals
Compact IP23 enclosure suitable for typical engine room installations
Four‑pole construction provides stable 50 Hz output with low vibration
Proven Leroy‑Somer reliability and worldwide service network

Weaknesses

IP23 rating only protects against splashing water, not full immersion
Requires an external exciter unit for brushless operation
Fixed 400 V output may need step‑up/step‑down gear for vessels using other voltages
Designed for 50 Hz markets; not directly compatible with 60 Hz systems
Weight and dimensions can be significant for small craft

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselFerry

Decision Guide: Choose if you need a reliable 100 kVA brushless alternator with high‑temperature insulation for 400 V/50 Hz service on medium‑to‑large vessels and can accommodate an external exciter. Avoid if the installation requires full watertight protection (IP68), operates on 60 Hz, or space/weight constraints are critical.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, navigation equipment, and emergency power on cargo ships, tankers, cruise vessels, and offshore platforms. Also used in dual‑generator sets where redundancy is required.

Datasheet

LSA 42.3 100kVA 400V 60Hz unverified

· brushless marine alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption for auxiliary power.
Class H insulation tolerates elevated ambient temperatures common on ships.
Brushless design gives low vibration and reduced maintenance intervals.
Modular construction simplifies installation, alignment and field servicing.
Leroy‑Somer’s long‑standing reputation for reliability in marine environments.

Weaknesses

IP23 rating offers limited protection against water ingress; not fully splash‑proof.
Physical size is larger than some modern high‑speed generators of similar power.
Designed for a single frequency (60 Hz) – not suitable where dual‑frequency capability is required.
May require an external forced‑air or liquid cooling system in hot climates.
Initial purchase price can be higher than generic, non‑branded alternatives.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore support vesselMedium‑size cruise liner

Decision Guide: Choose if you need a proven, low‑maintenance 100 kVA generator for 60 Hz service on vessels where space permits and robust temperature tolerance is required. Avoid if the installation demands higher ingress protection (IP≥44), dual‑frequency output, or the smallest possible footprint.

Use Cases: Commonly installed as an auxiliary power source to supply ship service loads such as lighting, HVAC, navigation equipment, and cargo handling gear, or as a standby generator for emergency power on medium‑sized commercial vessels.

Datasheet

LSA 42.3 100kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size relative to its 100 kVA rating, easing installation in limited engine rooms
Class‑H insulation provides good thermal margin and reliability under continuous load
Standard 4‑pole design gives stable voltage and frequency with low vibration
IP23 enclosure is sufficient for typical indoor shipboard environments while keeping cost down
Proven Leroy‑Somer reputation for durability and long service intervals

Weaknesses

IP23 protection does not guard against heavy water spray or salt‑water immersion; unsuitable for exposed deck installations
Fixed 440 V/50 Hz output limits use on vessels requiring 60 Hz or other voltage configurations without a transformer
Weight and dimensions are higher than some modern compact brushless generators of similar power
No built‑in automatic cooling system – relies on external ventilation, which must be properly designed
Limited overload capability compared with newer high‑efficiency models

Typical Vessels: Coastal cargo vesselsOffshore supply shipsFerriesTugboatsMedium‑size fishing vessels

Decision Guide: Choose if you need a reliable, standard‑rated 100 kVA auxiliary generator for a vessel with an indoor engine room and can accommodate the IP23 enclosure. Avoid if the installation requires higher ingress protection, 60 Hz operation, or a more compact brushless design.

Use Cases: The LSA 42.3 is commonly installed as the main auxiliary generator on small‑to‑medium commercial ships to supply hotel loads, navigation equipment, and emergency power. It also serves as a standby generator for critical systems where redundancy and proven reliability are paramount.

Datasheet

LSA 42.3 100kVA 440V 60Hz unverified

· brushless marine alternator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation at elevated temperatures
Brushless design reduces maintenance and improves reliability
Compact, low‑profile construction suitable for deck or engine‑room installation
IP23 enclosure provides splash protection while keeping the unit lightweight
Proven Leroy‑Somer brand reputation in marine power applications

Weaknesses

IP23 rating offers only limited ingress protection; not suitable for harsh, dusty environments
Designed for 60 Hz operation only – unsuitable for vessels requiring 50 Hz systems
External cooling system required (water‑cooled or forced air), adding auxiliary components
Single‑unit design provides no built‑in redundancy

Typical Vessels: Offshore supply vesselMedium‑size tankerContainer shipCruise ship auxiliary powerNaval auxiliary / support vessel

Decision Guide: Choose if you need a reliable 100 kVA brushless alternator with high temperature capability and are operating a 60 Hz fleet where IP23 protection is sufficient. Avoid if the vessel requires higher ingress protection (e.g., IP55), operates on 50 Hz, or demands integrated redundancy without additional units.

Use Cases: Commonly installed as the main auxiliary generator on medium‑sized commercial vessels, providing shipboard electricity for hotel loads, cargo handling gear, and emergency power. Also used as a standby generator in dual‑generator configurations where one unit can be taken offline for maintenance.

Datasheet

LSA 42.3 100kVA 690V 50Hz unverified

· low‑speed marine alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal rating (class H) allows operation in hot engine‑room environments.
IP23 enclosure provides protection against splashing water while keeping the unit compact for confined spaces.
Four‑pole design delivers stable 50 Hz output suitable for most shipboard electrical systems.
Proven Leroy‑Somer brand reputation for reliability and long service intervals.
Standard 690 V three‑phase output matches common marine distribution voltages, simplifying integration.

Weaknesses

Relatively heavy construction compared with newer lightweight aluminium‑frame generators.
Fixed 690 V rating limits flexibility if a vessel requires higher voltage busbars.
IP23 protection is not dust‑tight; additional sealing may be needed in very dusty or corrosive environments.
May require specific cooling arrangements (forced air) that add to installation complexity.
Higher upfront cost than some low‑cost Asian alternatives.

Typical Vessels: Container shipBulk carrierProduct tankerOffshore supply vesselCruise liner auxiliary power

Decision Guide: Choose if you need a dependable 100 kVA auxiliary generator with high temperature tolerance, proven OEM support and standard 690 V output for medium‑size commercial vessels. Avoid if weight is critical, the installation space cannot accommodate an IP23 unit, or the vessel operates on a voltage system other than 690 V.

Use Cases: Commonly installed as the main auxiliary generator on mid‑size cargo ships and offshore support vessels, providing power for hotel loads, cargo handling equipment, and emergency lighting. Also used as a standby/emergency generator where rapid start‑up and high reliability are required.

Datasheet

LSA 42.3 100kVA 690V 60Hz unverified

· brushless marine alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates the need for regular brush replacement, reducing maintenance costs.
Compact, lightweight construction fits well in limited engine‑room spaces.
Class H insulation provides good thermal tolerance up to 180 °C for short overload periods.
Four‑pole configuration delivers smooth output with low vibration, suitable for sensitive shipboard equipment.

Weaknesses

IP23 enclosure only protects against solid objects >12.5 mm and water spray; not suitable for harsh wet environments without additional protection.
Fixed 690 V rating may require step‑down transformers for vessels that operate on lower distribution voltages.
Maximum continuous power of 100 kVA limits use on larger ships that need higher auxiliary capacity.
Class H insulation, while robust, is lower than Class F or Class N alternatives used in some high‑temperature applications.

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise ferry

Certifications: DNV GLABS

Decision Guide: Choose if you need a reliable, low‑maintenance 100 kVA auxiliary generator for vessels with limited engine‑room space and a 690 V distribution system. Avoid if the installation requires higher voltage output, IP65 protection, or power ratings above 150 kVA.

Use Cases: Commonly installed as an auxiliary generator to supply shipboard services (lighting, HVAC, cargo handling equipment) and as an emergency standby source on medium‑size commercial vessels. Also used in shore‑power conversion sets where a compact 690 V source is required.

Datasheet

LSA 42.3 125kVA 400V 50Hz unverified

· low-speed marine alternator

Power (kVA)

125

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High temperature Class H insulation allows operation in harsh thermal environments
Compact design relative to its 125 kVA rating, saving space on smaller vessels
Proven Leroy‑Somer brand reputation for durability and low maintenance
Four‑pole construction provides stable voltage and frequency output
Suitable for both primary and standby power applications

Weaknesses

IP23 enclosure offers only splash protection; not suitable for fully wet or corrosive compartments
Fixed 400 V/50 Hz output may require transformers or converters for vessels operating on 60 Hz systems
Limited power rating (125 kVA) restricts use on larger ships that need higher generation capacity
No integrated control panel; additional instrumentation required
Weight and mounting dimensions are not specified, potentially requiring structural assessment

Typical Vessels: TugCoastal cargo vesselFishing vesselOffshore supply vesselWorkboat

Decision Guide: Choose if: you need a reliable 125 kVA generator for small‑to‑medium vessels, prefer a well‑known brand with high‑temperature insulation, and can accommodate an IP23 enclosure. Avoid if: the installation requires full dust/water protection (IP65+), operation on 60 Hz systems without conversion, or higher power output than 125 kVA.

Use Cases: Commonly installed as the main auxiliary generator on coastal tankers, offshore supply ships, and workboats to provide shipboard electricity for lighting, cargo handling gear, and emergency power. Also used as a standby generator in vessels that already have larger primary generators.

Datasheet

LSA 42.3 125kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

125

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (typically >95%) reduces fuel consumption for auxiliary loads
Compact modular construction fits confined engine‑room spaces
Class H insulation allows operation in high ambient temperature zones
Robust design with proven Leroy‑Somer reliability and long service intervals
Standard overload rating (often 150% for up to 30 min) supports peak demand

Weaknesses

IP23 enclosure provides limited protection against water spray; not suitable for harsh wet‑deck exposure
Fixed 400 V output may require additional transformers on vessels that standardise on higher voltages
External cooling system is required, adding piping and maintenance complexity
Relatively heavy for its power class, affecting weight‑budget on smaller vessels
Spare parts availability can be limited in remote ports compared with more common brands

Typical Vessels: Offshore supply vesselFerrySmall to medium tanker (up to ~15 000 DWT)Container ship (up to ~20 000 TEU)Cruise ship auxiliary power unit

Certifications: ABSDNV GL

Decision Guide: Choose if you need a reliable 125 kVA auxiliary generator with high efficiency, compact size and proven Leroy‑Somer service support, especially on vessels operating in warm climates where Class H insulation is beneficial. Avoid if the installation requires higher voltage (e.g., 660 V) or an enclosure with greater water ingress protection (IP65/68), or if weight constraints are critical for a very small craft.

Use Cases: Typically installed as a standby or hotel‑load generator in the main engine room, providing emergency power, auxiliary propulsion support, and continuous hotel load on offshore platforms, ferries, and medium‑size cargo vessels. It is also used to supply power to deck machinery such as winches and pumps when primary generators are offline.

Datasheet

LSA 42.3 125kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

125

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal capability with class H insulation allowing operation at elevated temperatures
Robust four‑pole design delivering stable 50 Hz output
Compact IP23 enclosure suitable for deck‑mounted installations where only splash protection is required
Proven Leroy‑Somer reliability and widespread service network
Standardised mounting and brush/ bearing arrangement simplifies routine maintenance

Weaknesses

IP23 rating provides only splash protection; not suitable for dusty or highly corrosive environments
Limited to 125 kVA – may be undersized for larger vessels or high‑power demand scenarios
No built‑in digital monitoring or remote diagnostics; requires external control system
Relatively heavy compared with newer lightweight aluminium‑frame generators
Requires separate cooling arrangement (air‑forced) in hot climates

Typical Vessels: Offshore supply vesselFerryCoastal cargo shipSmall tankerFishing vesselWorkboat / tug

Certifications: ISO 8528‑1 (marine generator set standard)CE marking

Decision Guide: Choose if you need a reliable 125 kVA auxiliary power source on a vessel with limited space and can accommodate an IP23 enclosure; the model offers proven durability, high temperature tolerance and easy maintenance. Avoid if higher power output, dust‑tight or explosion‑proof protection (IP54+), integrated digital control, or significant weight savings are required.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply vessels, as an emergency standby unit on ferries, or as a backup power source for navigation and hotel loads on small tankers and fishing boats where space is at a premium.

Datasheet

LSA 42.3 125kVA 440V 60Hz unverified

· brushless synchronous generator

Power (kVA)

125

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Standard 125 kVA rating matches many medium‑size vessel aux‑power requirements
Insulation class H allows operation in high‑temperature engine rooms
4‑pole design runs at 1800 rpm on typical 60 Hz marine diesel engines, simplifying coupling
Proven Leroy‑Somer brand with global service network

Weaknesses

IP23 enclosure provides only limited protection against water spray; additional housing may be required in harsh environments
Designed for 60 Hz operation only – not suitable for vessels requiring 50 Hz power systems
No integrated cooling system (air‑cooled), so heat removal depends on engine‑room ventilation
Relatively large footprint compared with newer compact generator sets

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselGeneral cargo vessel

Decision Guide: Choose if you need a reliable, 125 kVA auxiliary generator for US‑flagged or other 60 Hz vessels and value Leroy‑Somer’s service support. Avoid if the installation demands higher ingress protection (e.g., IP66), must operate on 50 Hz, or requires a more compact, integrated cooling solution.

Use Cases: Commonly installed in the main engine room as an auxiliary power source for shipboard services, emergency power supply, and start‑up of propulsion machinery on medium‑size commercial vessels.

Datasheet

LSA 42.3 125kVA 690V 50Hz unverified

· synchronous marine alternator

Power (kVA)

125

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and high power density suitable for medium‑size vessels
Insulation class H provides good thermal tolerance and reliability
4‑pole design runs at 1500 rpm on a 50 Hz system, matching common main engine speeds
IP23 enclosure offers protection against splashing water typical of engine rooms
Proven Leroy‑Somer reputation for durability and low maintenance

Weaknesses

IP23 rating does not protect against dust or heavy spray; unsuitable for harsher environments
Fixed 690 V output may require additional transformers for vessels standardized on other voltages
No integrated control panel – requires separate governor/monitoring equipment
Limited to 125 kVA, so not appropriate for large tankers or high‑power demand ships

Typical Vessels: Container ship (up to ~5 000 gt)General cargo vesselOffshore supply vesselFerryCoastal patrol boat

Decision Guide: Choose if you need a reliable 125 kVA auxiliary generator for a medium‑size ship, have space constraints and can accommodate an IP23 enclosure. Avoid if the installation requires higher voltage levels, dust‑tight protection (IP54+), or integrated control electronics.

Use Cases: Provides ship service power for lighting, HVAC, cargo handling equipment, and emergency supply on vessels where a compact, robust generator is preferred. Commonly installed alongside main propulsion generators to meet SOLAS auxiliary power requirements.

Datasheet

LSA 42.3 125kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

125

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (typically >94%) reduces fuel consumption for auxiliary power.
Robust construction with Class H insulation suitable for high ambient temperatures.
Compact footprint for a 125 kVA unit, easing installation in limited engine‑room space.
Integrated overload capability (up to 150 % for short periods) provides operational flexibility.
Standardized 690 V three‑phase output matches common marine distribution systems.

Weaknesses

IP23 enclosure offers only protection against solid objects; additional sealing may be required in wet or spray environments.
Maximum continuous rating of 125 kVA limits use on larger vessels that need higher auxiliary power.
Weight is relatively high compared with newer lightweight permanent‑magnet generators.
Requires regular brush and bearing maintenance typical of brushed synchronous machines.
Limited to 60 Hz operation; not directly suitable for regions or vessels requiring 50 Hz without a frequency converter.

Typical Vessels: Coastal cargo shipsOffshore supply vesselsFerriesSmall tankersYachts and luxury cruise auxiliary systems

Decision Guide: Choose this generator if you need a proven, high‑efficiency 125 kVA source for auxiliary or emergency power on medium‑size vessels with space constraints and can accommodate its IP23 enclosure. Avoid it when higher power output, stricter ingress protection (e.g., IP55), or ultra‑lightweight solutions are required.

Use Cases: Commonly installed as the main auxiliary generator on coastal traders and offshore support ships, providing hotel loads, cargo handling equipment, and emergency power. Also used in dual‑generator sets where one unit handles peak loads while the LSA 42.3 covers normal operation.

Datasheet

LSA 42.3 150kVA 400V 50Hz unverified

· Brushless synchronous generator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless construction eliminates the need for regular brush maintenance, increasing reliability.
Insulation class H allows operation at higher temperatures, suitable for harsh marine environments.
Compact size relative to its 150 kVA output fits well in limited engine‑room spaces.
Standard 400 V/50 Hz output matches most shipboard electrical systems, simplifying integration.
Four‑pole design provides stable voltage and frequency at the rated speed.

Weaknesses

IP23 enclosure offers only limited protection against water ingress; not suitable for heavily spray‑exposed locations.
Fixed 50 Hz frequency limits use on vessels that operate on 60 Hz systems without a converter.
150 kVA may be undersized for larger vessels requiring higher auxiliary power capacity.
Brushless units still require an external exciter or permanent magnet rotor, adding system complexity.
No built‑in emission control features; compliance depends on the prime mover (engine) attached.

Typical Vessels: Coastal tankerFeeder container shipOffshore supply vesselFerryMedium‑size bulk carrier

Decision Guide: Choose this generator if you need a reliable, low‑maintenance 150 kVA auxiliary power source for vessels operating on a 400 V/50 Hz system and have space constraints. Avoid it when higher ingress protection (IP55+), dual‑frequency capability, or larger power ratings are required.

Use Cases: Commonly installed as the main auxiliary generator in medium‑sized commercial ships to supply hotel loads, navigation equipment, and emergency power; also used on offshore support vessels where a compact, brushless alternator reduces maintenance downtime.

Datasheet

LSA 42.3 150kVA 400V 60Hz unverified

· air‑cooled synchronous marine generator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides good thermal tolerance in harsh marine environments
Compact footprint suitable for limited engine‑room space
Four‑pole design delivers smooth output with low vibration
Proven Leroy‑Somer reliability and ease of routine maintenance

Weaknesses

IP23 enclosure offers only basic protection; additional shielding may be required in spray‑prone areas
150 kVA rating limits use to vessels with modest auxiliary power demand
No built‑in sound attenuation; external muffling may be needed for noise‑sensitive installations

Typical Vessels: Coastal patrol boatOffshore supply vesselFerry (small/medium)WorkboatSmall tanker or product carrier

Decision Guide: Choose if: you need a reliable, compact 150 kVA generator for auxiliary power on vessels with limited engine‑room space and moderate environmental exposure. Avoid if: the installation requires higher ingress protection (e.g., IP54), greater power output, or integrated acoustic treatment.

Use Cases: Commonly installed as an emergency/auxiliary power source to run shipboard services such as lighting, pumps, HVAC, and navigation equipment on small to medium commercial vessels operating in coastal or offshore environments.

Datasheet

LSA 42.3 150kVA 440V 50Hz unverified

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Robust construction with H‑class insulation allowing high temperature operation
IP23 enclosure provides splash protection suitable for typical engine rooms
Four‑pole design ensures stable 50 Hz output and good voltage regulation
150 kVA rating matches the auxiliary power needs of many medium‑size vessels
Leroy‑Somer brand reputation for reliability and long service life

Weaknesses

IP23 is only splash‑proof; additional sealing may be required in harsh, dusty environments
Fixed 440 V/50 Hz output limits flexibility for vessels operating on 60 Hz systems
Physical size and weight can be a constraint for retrofit projects with limited space
May require an external automatic voltage regulator if not supplied as factory option

Typical Vessels: Container feederHandysize bulk carrierProduct tankerOffshore supply vesselCruise ship (auxiliary power)

Decision Guide: Choose if you need a proven 150 kVA, 50 Hz marine alternator with solid build quality and can accommodate an IP23 enclosure. Avoid if your vessel requires 60 Hz operation, a fully sealed (IP65+) unit, or tighter space/weight constraints.

Use Cases: Commonly installed as shipboard auxiliary generators to supply hotel loads, emergency power, start‑up of main propulsion engines, and shore‑power conversion on medium‑size commercial vessels.

Datasheet

LSA 42.3 150kVA 440V 60Hz unverified

· synchronous marine generator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

150 kVA rating fits medium‑size vessel auxiliary loads without oversizing
Insulation class H allows operation in high‑temperature engine rooms
Compact Leroy‑Somer design with proven field reliability
Four‑pole construction provides a stable 1800 rpm speed at 60 Hz

Weaknesses

IP23 enclosure offers only limited protection against water spray, restricting installation to sheltered spaces
Designed for 60 Hz systems; not directly compatible with vessels that standardise on 50 Hz
Requires an external cooling system or dedicated ventilation in hot climates
No integrated automatic voltage regulator – a separate AVR must be supplied

Typical Vessels: Coastal tankerOffshore support vessel (OSV)Research / survey shipSmall passenger ferryContainer feeder

Decision Guide: Choose if you need a reliable 150 kVA auxiliary generator for a 60 Hz installation and can accommodate an IP23‑rated unit in a protected engine‑room location. Avoid if the vessel operates on 50 Hz, requires higher ingress protection (e.g., IP44 or above), or needs an integrated AVR.

Use Cases: Commonly installed as an auxiliary generator to supply hotel loads, emergency power, and support for deck machinery on medium‑size commercial vessels; also used in diesel‑electric propulsion schemes where a dedicated synchronous alternator is required.

Datasheet

LSA 42.3 150kVA 690V 50Hz unverified

· synchronous marine alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal tolerance with Class H insulation allowing operation in hot engine rooms
Compact, air‑cooled design reduces space and weight compared to water‑cooled units
Proven reliability from Leroy‑Somer’s long history in marine power equipment
Standard 690 V output matches most shipboard distribution systems without need for extensive rewiring

Weaknesses

IP23 rating provides limited protection against moisture and dust; not suitable for harsh, wet environments without additional shielding
Fixed speed (1500 rpm at 50 Hz) requires a direct‑coupled prime mover; cannot be used with variable‑speed drives
No integrated control panel – separate governor/controller required
Limited to 690 V output; vessels needing higher bus voltages must add step‑up transformers

Typical Vessels: Container shipBulk carrierTankerCruise liner (mid‑size)Offshore supply vessel

Decision Guide: Choose if you need a compact, high‑temperature tolerant 150 kVA auxiliary generator that matches standard 690 V shipboard distribution and you have space for an air‑cooled unit. Avoid if the installation demands IP65 protection, variable‑speed operation, integrated control electronics, or higher voltage output without additional transformers.

Use Cases: Commonly installed as a main auxiliary generator on medium‑size merchant vessels to supply hotel services, cargo handling equipment, and emergency power; also used as a standby generator in ship engine rooms where space is at a premium.

Datasheet

LSA 42.3 150kVA 690V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size for its 150 kVA rating, saving engine room space
Class H insulation allows higher operating temperatures and longer life
Brushless design reduces maintenance intervals and eliminates brush wear
Four‑pole construction provides good low‑speed torque characteristics with typical marine diesel engines
Proven Leroy‑Somer reliability in many commercial fleets

Weaknesses

IP23 enclosure offers only limited protection against water ingress; additional shielding is required for harsh sea conditions
Fixed 60 Hz frequency limits use in regions or vessels that standardise on 50 Hz
150 kVA may be undersized for larger tankers, cruise ships or high‑power emergency systems
Requires a dedicated cooling fan and ventilation system, adding to installation complexity
Limited to standard marine voltage; not directly compatible with low‑voltage DC bus applications

Typical Vessels: Coastal cargo vesselsFerriesOffshore supply shipsWorkboatsMedium‑size tankers and bulk carriers

Decision Guide: Choose if you need a reliable, low‑maintenance 150 kVA auxiliary generator for a vessel that operates on 690 V / 60 Hz systems and can accommodate an IP23 enclosure with added protection. Avoid if the ship requires higher power output, 50 Hz operation, or a fully sealed (IP68) marine‑grade unit.

Use Cases: Typically installed as the main auxiliary generator in medium‑size commercial ships, providing hotel load power, emergency standby generation, and shore‑power conversion where a compact brushless alternator is preferred.

Datasheet

LSA 42.3 175kVA 400V 50Hz unverified

· synchronous alternator

Power (kVA)

175

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95% at rated load) typical of Leroy‑Somer designs
Class H insulation permits operation in ambient temperatures up to 180 °C
Compact footprint for a 175 kVA rating, suitable for limited engine‑room space
Robust cast‑iron frame with IP23 protection against dust and accidental contact
Four‑pole construction provides stable frequency and low vibration

Weaknesses

IP23 enclosure offers only limited moisture protection; not ideal for wet locations without extra shielding
Relatively heavy compared with newer lightweight aluminium or composite alternators of similar rating
Fixed 400 V output may require step‑up transformers on vessels using higher distribution voltages
No built‑in cooling fan; relies on external forced‑air system, adding installation complexity
Limited to 50 Hz operation, unsuitable for markets requiring 60 Hz without redesign

Typical Vessels: Offshore Supply VesselSmall TankerContainer FeederCruise Ship AuxiliaryPassenger Ferry

Decision Guide: Choose if you need a mid‑size (≈175 kVA) generator with proven Leroy‑Somer reliability, high temperature insulation and can accommodate an IP23 enclosure in a dry engine‑room environment. Avoid if the installation requires higher ingress protection, lower weight, or direct 60 Hz operation.

Use Cases: Commonly installed as the main auxiliary generator on small to medium commercial vessels, providing hotel power, cargo handling equipment, and emergency supply; also used as a standby unit for propulsion support on offshore platforms.

Datasheet

LSA 42.3 175kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

175

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) suitable for harsh marine temperature ranges
Robust four‑pole design provides good low‑speed torque compatibility with many diesel prime movers
IP23 enclosure offers protection against splashing water and dust while allowing easy access for maintenance
Proven Leroy‑Somer brand reputation for reliability in marine environments

Weaknesses

Relatively large physical footprint compared with compact, high‑speed alternators of similar rating
Standard IP23 rating may be insufficient for heavily exposed deck installations without additional shielding
Limited to 175 kVA; not suitable where higher auxiliary power is required
Requires a compatible diesel engine and control system – not a turnkey generator set

Typical Vessels: General cargoContainer shipBulk carrierOffshore supply vesselFerry

Decision Guide: Choose if you need a reliable, medium‑size auxiliary generator for vessels that already use four‑pole diesel engines and can accommodate the unit’s size. Avoid if space is at a premium, higher power output (>200 kVA) is required, or the installation environment demands a higher ingress protection rating.

Use Cases: Commonly installed as part of an auxiliary power plant on medium‑sized merchant ships, providing both main service power and emergency backup when paired with a diesel engine. Also used on offshore platforms where robust, low‑speed alternators are preferred for long‑term operation.

Datasheet

LSA 42.3 175kVA 440V 50Hz unverified

· brushless synchronous generator

Power (kVA)

175

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation allows operation in high ambient temperatures typical of engine rooms.
IP23 enclosure provides protection against solid objects and spray water, suitable for standard marine environments.
Direct‑drive at 1500 rpm (4‑pole, 50 Hz) gives good efficiency and low mechanical wear.
Leroy‑Somer reputation for reliability and long service life in maritime applications.
Compact footprint compared with equivalent rated generators from many competitors.

Weaknesses

IP23 rating is not splash‑proof against high‑pressure water jets; may require additional shielding in harsh weather decks.
No integrated control or monitoring package – external governor and protection system are required.
Weight and dimensions are typical for a 175 kVA unit, which can be limiting on smaller vessels with tight space constraints.
Fixed 440 V output may need step‑up/step‑down transformers for ships using other voltage standards.
Limited to 50 Hz; not directly suitable for vessels operating on 60 Hz systems without frequency conversion.

Typical Vessels: Bulk carrierContainer shipProduct tankerOffshore supply vesselCruise ship (mid‑size auxiliary power)

Decision Guide: Choose if you need a proven, mid‑range marine generator with high temperature tolerance and a compact layout for vessels that operate on 50 Hz/440 V systems. Avoid if the installation requires higher ingress protection (e.g., IP55), integrated control electronics, or operation on 60 Hz networks.

Use Cases: Commonly installed as an auxiliary power source for shipboard electrical distribution, emergency generator sets, and shore‑power conversion units on medium‑size commercial vessels where reliable, continuous power is required.

Datasheet

LSA 42.3 175kVA 440V 60Hz unverified

· brushless synchronous generator

Power (kVA)

175

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 175 kVA in a relatively compact footprint for auxiliary power applications.
Class‑H insulation allows operation at elevated temperatures, improving reliability in hot climates.
Brushless construction reduces maintenance intervals and eliminates brush wear issues.
Proven Leroy‑Somer brand reputation with worldwide service network and spare parts availability.
Standard 60 Hz output matches most shore‑power and shipboard electrical systems.

Weaknesses

IP23 enclosure provides only splash protection; not suitable for harsh, wet deck environments without additional shielding.
Air‑cooled version may struggle in very high ambient temperatures unless supplemental cooling is added.
Relatively heavy for its power rating compared with newer lightweight aluminum‑frame generators.
Noise level can be higher than modern low‑speed, water‑cooled alternatives.

Typical Vessels: Container shipBulk carrierProduct tankerOffshore supply vesselCruise ship auxiliary power

Decision Guide: Choose if you need a reliable 175 kVA, 440 V/60 Hz generator with proven brushless technology and have access to Leroy‑Somer support. Avoid if the installation requires a higher ingress protection rating (IP55+), ultra‑low noise, or the lightest possible weight for space‑critical projects.

Use Cases: Commonly installed as an auxiliary/main generator on medium‑size merchant vessels, providing shipboard electricity for propulsion auxiliaries, hotel services, and emergency power. Also used in shore‑power generators where a standard 60 Hz output is required.

Datasheet

LSA 42.3 175kVA 690V 50Hz unverified

· synchronous alternator

Power (kVA)

175

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Robust Leroy‑Somer construction with proven reliability in marine environments
Class H insulation allows operation at elevated temperatures typical of engine rooms
Standard 4‑pole design matches common 1500 rpm diesel prime movers (50 Hz)
IP23 enclosure provides splash protection while keeping the unit compact for confined spaces
Modular mounting facilitates routine maintenance and quick replacement

Weaknesses

IP23 rating offers only splash protection; not suitable where dust‑tight or higher ingress protection is required
No integrated control/generator set package – external governor and monitoring system needed
Weight and dimensions are relatively high compared with some compact, low‑cost alternatives
Limited to 690 V output; vessels requiring higher voltage may need additional step‑up transformers
Initial purchase price is typically above generic off‑brand units

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose if you need a dependable 175 kVA auxiliary generator with high temperature tolerance, standard 4‑pole speed compatibility and a reputable brand. Avoid if the installation demands higher ingress protection (e.g., IP55), an all‑in‑one generator set with built‑in controls, or if budget constraints outweigh the benefits of Leroy‑Somer’s durability.

Use Cases: Commonly installed as the main auxiliary power source on medium‑size merchant ships, providing electricity for hotel services, cargo handling equipment and emergency systems. Also used in offshore platforms where a reliable, high‑temperature capable generator is required for continuous operation.

Datasheet

LSA 42.3 175kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

175

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (175 kVA) suitable for medium‑to‑large ship hotel loads
Class H insulation allows operation at elevated temperatures, improving durability
Compact 4‑pole design matches standard 1800 rpm diesel prime movers for 60 Hz generation
IP23 enclosure is adequate for protected deck or engine‑room installations and reduces corrosion risk

Weaknesses

IP23 rating does not protect against water jets or heavy spray; unsuitable for exposed outdoor mounting without additional shielding
Brush‑type construction (typical of Leroy‑Somer alternators) requires periodic maintenance
Physical size may be limiting on vessels with tight auxiliary spaces
Limited to 690 V systems; not directly compatible with lower‑voltage shipboard distribution without step‑down transformers

Typical Vessels: Container shipsBulk carriersTankersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a proven 175 kVA generator for a protected engine‑room or deck installation, value Leroy‑Somer’s reputation for reliability, and can accommodate the IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), minimal maintenance intervals, or very limited space.

Use Cases: Commonly installed as an auxiliary generator to supply hotel services, cargo handling equipment, and emergency power on large merchant vessels; also used in offshore platforms where a robust 690 V, 60 Hz source is required.

Datasheet

LSA 42.3 200kVA 400V 50Hz unverified

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal class (H) insulation allows operation at elevated temperatures typical of engine‑room environments.
IP23 enclosure provides splash protection suitable for standard marine machinery spaces.
Four‑pole design matches the 1500 rpm speed of most low‑speed marine diesel engines, simplifying coupling.
Leroy‑Somer’s reputation for durability translates to long service intervals and proven field reliability.
200 kVA rating fits a wide range of medium‑size vessels without requiring oversized equipment.

Weaknesses

IP23 protection is not dust‑tight; additional sealing may be required in harsher compartments.
Fixed 400 V output may necessitate step‑up transformers for ships that standardise on higher bus voltages.
Physical size and weight are larger than modern high‑speed, compact generators of comparable rating.
The LSA series does not integrate a built‑in digital control system; an external controller is needed for advanced monitoring.
Limited to 50 Hz operation; not directly suitable for vessels requiring 60 Hz without frequency conversion.

Typical Vessels: General cargoContainer feederBulk carrier (mid‑size)Product tankerOffshore supply vesselFerry

Decision Guide: Choose if you need a proven, low‑speed 200 kVA generator with robust thermal handling and splash protection for standard 400 V/50 Hz ship systems. Avoid if your installation requires higher voltage, dust‑tight enclosures, integrated digital controls, or a more compact high‑speed unit.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, cargo handling equipment, and emergency generators on medium‑size merchant vessels; also used in new builds where fleet commonality with existing Leroy‑Somer units is desired.

Datasheet

LSA 42.3 200kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (typically >95%) reducing fuel consumption
Robust cast‑iron frame and Class H insulation for long service life
Integrated voltage regulation/exciter provides stable output under varying loads
Compact footprint suitable for medium‑size engine rooms
Good overload capability (often 150% for short periods)

Weaknesses

IP23 enclosure offers limited protection against water ingress; not fully splash‑proof
Designed for 60 Hz only, unsuitable where 50 Hz is required
May require external cooling water or forced ventilation at continuous full load
Relatively heavy compared with newer lightweight aluminum designs
Spare‑parts logistics can be slower in remote ports

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose the LSA 42.3 when you need a proven, high‑efficiency 200 kVA generator for 60 Hz systems on medium‑size merchant vessels and can accommodate its IP23 protection level. Avoid it if the vessel operates in harsh wet environments requiring higher ingress protection or if a 50 Hz supply is mandatory.

Use Cases: Commonly installed as the main propulsion‑auxiliary generator on container, bulk and general cargo ships, providing hotel power and serving as an emergency source. It is also used on offshore support vessels where space is at a premium but reliable, high‑output generation is required.

Datasheet

LSA 42.3 200kVA 440V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability from extensive marine service history
Brushless design reduces maintenance and downtime
Compact size relative to its 200 kVA rating, easing installation in limited spaces
Robust H‑class insulation suitable for high temperature environments
Standard 440 V/50 Hz output matches most European‑type ship electrical systems

Weaknesses

IP23 enclosure provides only splash protection; not suitable for harsh wet‑deck exposure without additional shielding
Fixed 50 Hz frequency limits use on vessels operating on 60 Hz power grids
Weight is higher than newer high‑speed generator designs, affecting weight‑critical installations
External cooling may be required at sustained full load in hot climates
Limited voltage flexibility (no 660 V or low‑voltage options) compared with some competitors

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IMO D-2DNV GL

Decision Guide: Choose if you need a dependable 200 kVA auxiliary generator for 440 V/50 Hz systems, value low‑maintenance brushless operation and have space for a standard IP23 unit. Avoid if the vessel requires 60 Hz power, higher voltage options, fully sealed (IP55+) equipment, or strict weight limits.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size merchant vessels, as an emergency generator on cruise ships, or as a shore‑power unit for ports where 440 V/50 Hz supply is standard. It also serves offshore platforms that need reliable, low‑maintenance power generation.

Datasheet

LSA 42.3 200kVA 440V 60Hz unverified

· brushless synchronous generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates regular brush maintenance and reduces downtime.
H‑class insulation provides high thermal capability and long service life under heavy loads.
Compact IP23 enclosure fits well in limited engine‑room spaces while protecting against dust.
Robust 4‑pole construction delivers stable voltage and frequency at 60 Hz.
Widely supported by Leroy‑Somer spare‑parts network for quick repairs.

Weaknesses

IP23 rating offers only basic protection; not suitable for wet or spray‑prone locations without additional shielding.
Designed for 60 Hz operation, limiting use on vessels that standardise on 50 Hz systems.
Requires an external cooling system (air‑forced) which adds to installation complexity.
Higher upfront cost compared with smaller, lower‑rated alternators.
Physical size and weight may be restrictive on very small craft.

Typical Vessels: Offshore supply vesselPlatform supply vesselMedium‑size ferryCoastal tankerContainer feeder

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator for a 60 Hz, 440 V system on a vessel with adequate engine‑room space and can accommodate an IP23 enclosure. Avoid if the ship operates on 50 Hz, requires higher ingress protection (e.g., IP55), or has severe weight/space constraints.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on offshore support ships and medium‑size commercial vessels. Also used in standby configurations where rapid start‑up and low maintenance are priorities.

Datasheet

LSA 42.3 200kVA 690V 50Hz unverified

· synchronous marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency typical of synchronous machines (≈95% at rated load)
Class H insulation allows operation in high ambient temperatures common on vessels
Compact frame size for a 200 kVA rating, facilitating installation in limited engine‑room space
Robust IP23 enclosure provides protection against splashing water and dust in marine environments

Weaknesses

IP23 rating does not protect against heavy spray or submersion; additional shielding may be required in harsh weather decks
Four‑pole design limits maximum speed to ~1500 rpm, requiring a suitable prime mover gearbox on some vessels
Standard Leroy‑Somer control package may need customization for integration with modern ship automation systems

Typical Vessels: Coastal tankerShort‑sea container vesselMultipurpose cargo shipOffshore supply vesselFerry

Decision Guide: Choose if: you need a reliable 200 kVA generator with high temperature tolerance, limited installation space, and a proven synchronous design for vessels operating in moderate marine climates. Avoid if: the installation area is exposed to heavy spray or requires higher IP ratings, or if you require an integrated inverter‑type solution without additional control engineering.

Use Cases: The LSA 42.3 is typically installed as auxiliary power generation on medium‑size merchant ships where a compact, high‑efficiency alternator supplies shipboard electricity for hotel loads, cargo handling equipment, and emergency systems. It is also used in offshore support vessels that need dependable standby power under variable ambient conditions.

Datasheet

LSA 42.3 200kVA 690V 60Hz unverified

· synchronous brushless alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides excellent temperature tolerance and reliability
Compact 4‑pole design suited to standard 690 V three‑phase shipboard distribution
Proven Leroy‑Somer brand reputation for durability in marine environments
Integrated IP23 enclosure offers adequate protection against splashing water typical of engine rooms

Weaknesses

IP23 rating does not protect against heavy spray or dust; unsuitable for exposed deck installations
Fixed 60 Hz frequency limits use on vessels that operate on 50 Hz systems
External cooling system may be required in high‑load conditions, adding installation complexity
Weight and dimensions are relatively large for a 200 kVA unit, impacting space allocation

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 200 kVA, 690 V generator for vessels operating on 60 Hz with standard engine‑room protection and value the high thermal class. Avoid if the installation requires higher ingress protection (e.g., IP55), operates on 50 Hz, or has severe space/weight constraints.

Use Cases: Commonly installed as auxiliary power generators for ship service loads such as lighting, HVAC, cargo handling equipment, and emergency power supply in medium‑size commercial vessels.

Datasheet

LSA 44.3 200kVA 400V 50Hz unverified

· Marine alternator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Leroy‑Somer brand with long service history in marine applications
Class H insulation allows higher operating temperatures and longer life
Compact 4‑pole construction provides stable 50 Hz output at 200 kVA
IP23 enclosure offers protection against water spray, suitable for most deck installations

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; may need additional shielding in harsh environments
Designed only for 400 V/50 Hz – unsuitable for vessels requiring 60 Hz or different voltage levels
External cooling may be required in high‑load continuous operation, adding to installation complexity
Physical size and weight are larger than newer compact generator sets based on modern inverter technology

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 200 kVA auxiliary power source on vessels operating at 400 V/50 Hz, value the durability of Class H insulation and a well‑known manufacturer. Avoid if your installation requires higher ingress protection (IP≥44), 60 Hz operation, or space‑critical solutions.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size merchant ships, providing power for hotel services, cargo handling equipment, and emergency systems; also used on offshore platforms for shore‑power generation where a robust, low‑maintenance alternator is required.

Datasheet

LSA 44.3 200kVA 400V 60Hz unverified

· brushless marine alternator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates brushes and slip rings, resulting in very low maintenance requirements.
Class H insulation allows operation at higher temperatures without derating the machine.
Compact footprint for its power rating, facilitating installation on medium‑size vessels.
Proven Leroy‑Somer brand with a long service record in marine applications.
Standard 400 V three‑phase output matches most shipboard distribution systems.

Weaknesses

IP23 enclosure only protects against splash; additional protection may be needed in harsh offshore environments.
Fixed 60 Hz frequency limits use on vessels that operate on 50 Hz power grids.
No integrated control panel – requires separate controller and monitoring equipment.
Weight and size are higher than some newer, high‑speed generator sets of comparable rating.

Typical Vessels: Offshore Supply VesselPlatform Supply VesselFerryResearch VesselPatrol Boat

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable, low‑maintenance 200 kVA generator for a 400 V/60 Hz shipboard system and can accommodate an IP23 enclosure. Avoid if the vessel operates in severe marine exposure requiring higher ingress protection or if a 50 Hz supply is mandatory.

Use Cases: Commonly installed as the main service generator on offshore supply vessels, as an auxiliary power source for cargo handling equipment, or as emergency power on ferries and research ships where a robust, low‑maintenance alternator is required.

Datasheet

LSA 44.3 200kVA 440V 50Hz unverified

· brushless marine alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Leroy‑Somer reliability with over 30 years of service in marine environments
Compact size relative to its 200 kVA rating, facilitating installation in limited engine rooms
Class H insulation allows operation at higher temperatures and improves durability
Standard 440 V/50 Hz output matches most shipboard electrical systems, simplifying integration
Four‑pole design provides stable 1500 rpm operation with good overload capability

Weaknesses

IP23 enclosure offers only limited protection against water spray; additional housing may be required for harsh marine exposure
No built‑in sound attenuation – external muffling needed to meet noise regulations on some vessels
Maximum rating of 200 kVA may be insufficient for larger ships that require higher auxiliary power
Requires separate cooling system (air or water) as the unit is not self‑cooled

Typical Vessels: Medium‑size tankersContainer vessels up to 5,000 TEUBulk carriers (Handymax/Supramax)Offshore supply vesselsFerries and Ro‑Ro ships requiring ~200 kVA hotel load

Certifications: ISO 8528‑1 (Generator sets – Part 1: General specifications and testing)IEC 60034 (Rotating electrical machines)

Decision Guide: Choose if you need a reliable, compact 200 kVA auxiliary generator that matches standard 440 V/50 Hz shipboard power and can be housed in a protected engine‑room compartment. Avoid if the installation area is exposed to heavy spray or saltwater without additional enclosures, if integrated noise control is mandatory, or if higher than 200 kVA capacity is required.

Use Cases: Typically installed as an auxiliary generator for hotel services (lighting, HVAC, cargo handling equipment) on medium‑size commercial vessels; also used as a standby/emergency power source and in shore‑power conversion sets where a stable 440 V output is needed.

Datasheet

LSA 44.3 200kVA 440V 60Hz unverified

· brushless synchronous generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless construction reduces maintenance and eliminates spark risk in hazardous atmospheres.
High efficiency typical of Leroy‑Somer designs, leading to lower fuel consumption for the prime mover.
Compact footprint relative to its 200 kVA rating, suitable for vessels with limited engine‑room space.
Class‑H insulation allows operation in high ambient temperature zones common on tropical routes.

Weaknesses

IP23 enclosure provides only basic protection; not fully splash‑proof for harsh marine environments.
Fixed 440 V output may require additional transformers to match vessels standardized on 690 V systems.
Maximum rating of 200 kVA limits use on larger ships that need higher auxiliary power capacity.
External exciter required for some installations, adding complexity compared with fully integrated units.

Typical Vessels: Offshore supply vesselFerrySmall to medium container shipBulk carrier (up to ~30 000 dwt)Cruise ship auxiliary generator

Decision Guide: Choose if you need a reliable, low‑maintenance 200 kVA brushless generator for 60 Hz vessels with moderate space constraints and can accommodate an IP23 enclosure. Avoid if the installation demands higher voltage (e.g., 690 V), splash‑proof or explosion‑proof protection, or power ratings above 200 kVA.

Use Cases: Typically installed as an auxiliary generator on medium‑sized merchant vessels and offshore support ships to supply hotel loads, emergency lighting, and deck machinery when the main propulsion plant is offline. Also used in ferry and cruise ship service decks where compact, low‑maintenance power sources are valued.

Datasheet

LSA 44.3 200kVA 690V 50Hz unverified

· marine synchronous alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency typical of Leroy‑Somer designs (often >95% at rated load)
Class H insulation permits operation at elevated temperatures, improving reliability in hot climates
Compact LSA series footprint suitable for limited engine‑room space
Proven brand reputation and long service history in marine applications
Compatible with standard shipboard voltage regulation packages

Weaknesses

IP23 enclosure offers only basic protection against splashing; not fully splash‑proof for harsh weather exposure
Fixed 690 V output may require additional transformers or converters on vessels that use different bus voltages
Designed for 50 Hz only, limiting use on ships that operate at 60 Hz without frequency conversion
Requires external cooling fans in high ambient temperature zones to maintain optimal operating temperature

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose if: you need a reliable 200 kVA auxiliary generator for vessels operating at 50 Hz, have limited engine‑room space, and can accommodate an IP23 enclosure. Avoid if: the installation demands higher ingress protection (IP44+), dual‑frequency capability, or direct integration with non‑690 V bus systems without additional conversion equipment.

Use Cases: Commonly installed as part of auxiliary power sets on medium‑size merchant ships for hotel loads, navigation equipment, and emergency power. Frequently paired with diesel engines in generator sets to meet SOLAS requirements for standby power.

Datasheet

LSA 44.3 200kVA 690V 60Hz unverified

· synchronous marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Leroy‑Somer reliability and long service life
High efficiency operation typical of the LSA series
Compact, cast‑iron construction suitable for deck or engine‑room installation
H‑class insulation allows higher temperature margins
Four‑pole design matches standard 1500 rpm marine drive speeds

Weaknesses

IP23 enclosure provides only splash protection; not dust‑tight
Relatively heavy due to cast‑iron frame, limiting installation in weight‑critical spaces
Fixed 690 V output limits flexibility for vessels requiring other voltage levels
Requires external cooling system on high‑load operation
Designed for 60 Hz systems only; not directly suitable for 50 Hz markets

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator for a 690 V, 60 Hz marine installation and can accommodate a splash‑proof (IP23) enclosure with the weight of a cast‑iron unit. Avoid if your vessel requires dust‑tight protection, higher voltage outputs, or strict weight/space constraints.

Use Cases: Commonly installed as an auxiliary generator to supply hotel loads, emergency power, or main service power on medium‑size merchant ships and offshore platforms where a robust, low‑maintenance source is required.

Datasheet

LSA 44.3 250kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency typical of low‑speed synchronous design (≈94% at rated load)
Robust Class H insulation allows operation up to 180 °C, extending service life in hot climates
Compact IP23 deck‑mounted enclosure saves space compared with larger open‑frame units
Four‑pole construction provides standard 1500 rpm speed for 50 Hz systems, simplifying coupling to existing gearboxes
Proven Leroy‑Somer brand reputation for reliability and worldwide service support

Weaknesses

IP23 rating offers limited protection against water jets; not suitable for harsh wet‑deck exposure without additional shielding
Fixed 400 V output may require step‑up transformers on vessels that operate at higher distribution voltages (e.g., 660 V)
Weight is relatively high for the power class, which can affect weight‑critical installations
No integrated brushless exciter; requires separate excitation system and associated maintenance
Limited to 4 poles – not optimal for low‑speed diesel engines that run below 1200 rpm

Typical Vessels: Offshore Supply VesselFerryCoastal Container ShipResearch / Survey VesselSmall Ro‑Ro

Decision Guide: Choose if: you need a reliable 250 kVA generator for vessels with standard 400 V distribution, limited installation space and prefer a well‑supported brand. Avoid if: the installation environment is exposed to heavy spray or water jets, the ship uses higher voltage busbars, or weight/space constraints are critical and a newer brushless design offers better power density.

Use Cases: The LSA 44.3 is typically installed in the main engine room of medium‑size commercial vessels to supply auxiliary power for hotel loads, navigation equipment, and cargo handling systems. It is also used on offshore support ships where a compact, robust alternator is required for continuous operation under variable load conditions.

Datasheet

LSA 44.3 250kVA 400V 60Hz unverified

· low‑speed marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation allows operation in high ambient temperatures up to 180 °C.
Compact footprint with a robust cast‑iron frame suitable for limited engine‑room space.
Proven reliability from extensive service history on offshore and merchant vessels.
Standard 400 V/60 Hz output matches most modern shipboard electrical systems.
Four‑pole design provides good voltage regulation at 1800 rpm.

Weaknesses

IP23 rating offers only limited protection against water spray; not ideal for harsh, wet deck environments.
Relatively heavy compared with newer lightweight aluminum‑housing units.
Fixed speed (1800 rpm) limits flexibility for variable‑speed propulsion integration.
Requires forced ventilation or dedicated cooling system to maintain temperature limits.

Typical Vessels: Offshore Supply VesselPlatform Supply VesselSmall to medium TankerContainer Ship (auxiliary power)Ferry

Certifications: ABS Approved Marine GeneratorDNV GL Type Approval

Decision Guide: Choose if you need a proven 250 kVA auxiliary generator with high‑temperature capability and standard 400 V/60 Hz output, and have space for a ventilated enclosure. Avoid if the installation demands a higher IP rating (e.g., IP55 or better), ultra‑light weight, or variable‑speed operation.

Use Cases: Typically installed as an auxiliary generator driven by a diesel engine on offshore supply vessels and medium‑size merchant ships, providing shipboard electricity for hotel services, cargo handling equipment, and emergency power. Also used in standby/emergency generator sets where reliability and temperature tolerance are critical.

Datasheet

LSA 44.3 250kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal class (H) allows operation in hot engine rooms without derating
Robust 4‑pole design provides stable frequency at low speeds, matching many marine diesel sets
Standard 440 V/50 Hz output fits most European‑type ship electrical systems
Proven Leroy‑Somer brand reputation for durability and long service intervals
IP23 enclosure simplifies installation in confined engine‑room spaces

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for exposed or wet locations
250 kVA may be undersized for larger vessels requiring multiple high‑capacity auxiliaries
Physical size and weight are relatively large compared with modern compact, oil‑free alternatives
No built‑in automatic voltage regulator (AVR) – requires separate control unit
Limited to 50 Hz operation; not directly compatible with 60 Hz markets without redesign

Typical Vessels: Offshore supply vesselFerryCruise ship auxiliary generatorMedium‑size container or bulk carrier (auxiliary set)Fishing vessel with high‑power refrigeration

Decision Guide: Choose if you need a reliable, thermally robust 250 kVA generator for 440 V/50 Hz auxiliary power on vessels where space is not the primary constraint and an IP23 enclosure is acceptable. Avoid if the installation requires higher ingress protection, higher power output, or a compact oil‑free design.

Use Cases: Typically installed as the main auxiliary generator in medium‑sized ships to supply hotel loads, cargo refrigeration, navigation equipment, and emergency power; also used as standby generators on offshore platforms where high ambient temperatures are expected.

Datasheet

LSA 44.3 250kVA 440V 60Hz unverified

· brushless synchronous generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency typical of Leroy‑Somer brushless designs
Class‑H insulation allows reliable operation in hot engine‑room environments
Compact IP23 enclosure saves space while protecting against large debris
Four‑pole construction delivers stable 60 Hz output under varying loads
Widely recognized brand reputation for durability and low maintenance

Weaknesses

IP23 rating does not protect against fine dust or water ingress, limiting placement options
250 kVA may be insufficient for larger vessels that require higher total generation capacity
Single‑unit output may necessitate parallel installation to meet redundancy requirements
Spare parts and service support can be limited in remote ports compared with more common manufacturers
No integrated automatic voltage regulator; an external AVR is required

Typical Vessels: Coastal tankerGeneral cargo shipFerryResearch vesselSmall offshore supply vessel

Decision Guide: Choose if: you need a reliable 250 kVA generator for medium‑size vessels, space is at a premium, and the operating environment stays within the IP23 protection level. Avoid if: the ship requires higher power output, strict dust/water ingress protection (IP54+), or built‑in redundancy without adding extra units.

Use Cases: The LSA 44.3 is typically installed in the main engine room of coastal and regional vessels to supply auxiliary power for navigation systems, cargo handling equipment, and hotel loads. It is also used as a standby generator on ferries and research ships where compact size and temperature tolerance are critical.

Datasheet

LSA 44.3 250kVA 690V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency brushless design reduces maintenance and improves reliability
Insulation class H allows operation in elevated temperature environments
Compact IP23 enclosure suitable for typical engine‑room installations
Proven Leroy‑Somer brand reputation for marine power equipment
Four‑pole construction provides stable 50 Hz output at medium speeds

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for very wet or spray‑prone areas
Fixed 690 V output may require additional transformers for vessels needing different voltage levels
Physical size and weight are larger than newer integrated generator‑set solutions
Air‑cooled design can be less effective in extremely hot climates without supplemental cooling

Typical Vessels: Bulk CarrierTankerContainer ShipOffshore Supply VesselGeneral Cargo Vessel

Decision Guide: Choose if: you need a reliable 250 kVA auxiliary power source for a medium‑speed diesel engine, value proven brushless technology and high temperature tolerance, and have standard engine‑room space. Avoid if: the installation requires higher IP protection, a different voltage level without transformers, or you prefer a more compact integrated generator set.

Use Cases: Commonly installed as part of the auxiliary power plant on medium‑size merchant vessels to supply hotel loads, deck machinery, and emergency power; also used in offshore support ships where robust, low‑maintenance generation is critical.

Datasheet

LSA 44.3 250kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency typical of Leroy‑Somer designs, reducing fuel consumption
Brushless construction (where applicable) minimizes wear and maintenance
IP23 enclosure protects against splashing water and dust, suitable for most engine rooms
H‑class insulation allows operation at elevated temperatures
Broad compatibility with medium‑speed diesel prime movers

Weaknesses

IP23 rating is not fully sealed; unsuitable for areas exposed to heavy spray or immersion
Fixed 690 V output may require additional transformers for vessels using higher voltage distribution systems
Initial acquisition cost can be higher than generic off‑the‑shelf generators
Integration may demand specific Leroy‑Somer control electronics
Physical size and weight are typical of 250 kVA units, limiting installation in very tight spaces

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselFerry

Decision Guide: Choose if: you need a proven 250 kVA marine generator with high efficiency, robust construction and H‑class insulation for standard 690 V shipboard distribution. Avoid if: the installation requires a fully sealed (IP66+) enclosure, higher voltage output, or extremely compact dimensions.

Use Cases: Commonly installed in auxiliary power rooms of merchant vessels to supply hotel loads, cargo handling equipment, navigation systems and emergency power, often paired with medium‑speed diesel engines as part of an integrated generator set.

Datasheet

LSA 44.3 300kVA 400V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

300

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates the need for regular brush maintenance, reducing downtime.
High insulation class H allows operation in elevated temperature environments typical on ships.
Robust IP23 enclosure provides protection against dust and limited water spray while keeping the unit compact.
Proven Leroy‑Somer reputation for durability and long service life in marine applications.
Standard 400 V/50 Hz output matches most shipboard distribution systems, simplifying integration.

Weaknesses

IP23 rating offers only moderate protection; harsher marine spray conditions may require a higher IP rating.
Fixed 4‑pole design ties the alternator to 1500 rpm for 50 Hz operation, limiting flexibility for variable‑speed drives.
No dual‑frequency (60 Hz) capability, so unsuitable for vessels operating in regions with 60 Hz standards without a frequency converter.
External cooling system is required, adding installation complexity and space requirements.

Typical Vessels: TankerContainer shipBulk carrierCruise shipOffshore support vessel

Decision Guide: Choose if: you need a reliable 300 kVA, 400 V/50 Hz auxiliary generator with low maintenance brushless design for vessels operating in 50 Hz regions and can accommodate an IP23 enclosure. Avoid if: the installation demands higher ingress protection (e.g., IP55), dual‑frequency capability, or a more compact cooling solution.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling equipment, navigation and communication systems on medium‑size commercial vessels. It is also used in offshore support ships where robust, low‑maintenance generation is required for extended operations at sea.

Datasheet

LSA 44.3 300kVA 400V 60Hz unverified

· brushless synchronous generator

Power (kVA)

300

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) and good overload capability typical of Leroy‑Somer designs
Brushless construction reduces maintenance intervals and eliminates brush wear
Compact footprint for a 300 kVA unit, easing installation in limited engine‑room spaces
Class H insulation allows operation up to 180 °C, enhancing thermal robustness
Standard 4‑pole design provides stable frequency at fixed shaft speeds

Weaknesses

IP23 enclosure offers only protection against solid objects >12.5 mm; not fully splash‑proof for harsh marine environments
Fixed 60 Hz output limits use on vessels that require dual‑frequency (50/60 Hz) capability
External exciter/control system may be required, adding to wiring complexity
Weight can be significant compared with newer lightweight permanent‑magnet alternatives
No built‑in redundancy; a separate emergency generator is still needed for safety compliance

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise liner (mid‑size)Ferry

Decision Guide: Choose if you need a proven, low‑maintenance 300 kVA auxiliary generator for vessels with standard 400 V/60 Hz power systems and limited engine‑room space. Avoid if the installation requires higher ingress protection (IP≥44), dual‑frequency operation, or the lightest possible weight solution.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on merchant vessels; also used in offshore platforms where reliable, continuous power is critical.

Datasheet

LSA 44.3 300kVA 440V 50Hz unverified

· 4‑pole synchronous marine generator

Power (kVA)

300

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal capability thanks to Class H insulation, allowing operation in hot engine rooms
Robust IP23 enclosure provides protection against dust and water spray typical of marine environments
Proven Leroy‑Somer reliability with a long service history in the maritime sector
Standard 440 V/50 Hz output matches most shipboard electrical systems, simplifying integration
Compact LSA series design facilitates installation in limited engine‑room space

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; additional shielding may be required in harsh weather conditions
No built‑in electronic governor/control unit – an external control system is needed for speed regulation and load sharing
Fixed 4‑pole design limits operating speed to 1500 rpm at 50 Hz, which may not suit vessels that prefer higher‑speed generators
Weight and dimensions are comparable to older marine alternators; newer compact units may be lighter

Typical Vessels: Container shipsGeneral cargo vesselsCruise liners (hotel load)Offshore supply vesselsFerries

Decision Guide: Choose if you need a reliable 300 kVA auxiliary generator with proven brand reputation, can accommodate an IP23 enclosure and are prepared to provide an external control system. Avoid if the installation requires higher ingress protection (e.g., IP55) or a fully integrated governor package.

Use Cases: Commonly installed as the main auxiliary power source on medium‑size merchant vessels for hotel services, cargo handling equipment, and emergency power supply; also used in offshore support ships where robust thermal performance is critical.

Datasheet

LSA 44.3 300kVA 440V 60Hz unverified

Power (kVA)

300

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (300 kVA) in a relatively compact footprint, saving engine‑room space.
Class H insulation allows operation at elevated temperatures common in marine environments.
Four‑pole design runs at 1500 rpm on 60 Hz systems, matching many shipboard prime‑mover speeds and reducing gear wear.
IP23 enclosure provides splash protection while keeping the unit lightweight and easy to service.
Leroy‑Somer reputation for reliability and long service intervals in marine applications.

Weaknesses

IP23 rating offers only limited protection against dust and water ingress; not suitable for harsh, wet‑deck installations.
No built‑in automatic voltage regulator (AVR) – a separate control unit is required for full load regulation.
Class H insulation demands careful temperature monitoring to avoid overheating in confined spaces.
Fixed 440 V output may require additional transformers or converters on vessels standardized on other voltages.

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a proven 300 kVA auxiliary generator with high‑temperature capability and limited space, and the installation environment meets IP23 protection. Avoid if the vessel requires higher ingress protection (IP44 or above), integrated AVR, or a different voltage standard without additional conversion equipment.

Use Cases: Commonly installed as the main auxiliary generator on large merchant vessels to supply hotel loads, cargo handling equipment, and emergency power; also used in offshore platforms where compact, high‑temperature tolerant generators are required.

Datasheet

LSA 44.3 300kVA 690V 50Hz unverified

· Low-speed marine alternator

Power (kVA)

300

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal capability (insulation class H) allowing reliable operation in hot engine rooms.
Proven Leroy‑Somer reliability with long service life in marine environments.
Four‑pole design provides stable frequency and lower vibration compared to higher‑speed units.
IP23 enclosure offers basic protection against dust and water spray, suitable for most shipboard installations.
Standard 690 V output matches common three‑phase ship power systems, simplifying integration.

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; additional shielding may be required in harsh wet zones.
Physical size and weight are typical for a 300 kVA unit, which can limit placement on vessels with tight space constraints.
Requires an external cooling system (forced air) that adds to installation complexity.
Limited voltage flexibility – may need step‑down transformers for vessels operating at lower voltages.
No integrated control panel; separate governor and monitoring equipment are needed.

Typical Vessels: Container shipBulk carrierTankerGeneral cargo vesselOffshore supply vessel

Certifications: IMO D‑2 (type approval for ship service generators)ABS classification

Decision Guide: Choose if you need a reliable 300 kVA generator with high temperature tolerance, standard 690 V output and are comfortable providing additional protection beyond IP23. Avoid if the installation demands a higher ingress protection rating, very compact dimensions, or an integrated control package.

Use Cases: Typically installed as auxiliary power generators on medium‑size merchant vessels to supply hotel loads, cargo handling equipment, and emergency power; also used in offshore support ships where robust, low‑speed alternators are preferred for durability.

Datasheet

LSA 44.3 300kVA 690V 60Hz unverified

· low-speed marine alternator

Power (kVA)

300

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 300 kVA in a relatively compact footprint
Class‑H insulation provides good thermal margin and reliability
IP23 enclosure offers protection against splashing water while allowing easy access for maintenance
Robust construction suited to harsh marine environments
Good overload capability typical of Leroy‑Somer designs

Weaknesses

Limited to a single voltage/frequency (690 V, 60 Hz) – not suitable for vessels requiring dual‑frequency or higher voltage options
Cooling relies on forced air; performance can degrade in very hot ambient conditions
Weight and mounting requirements may be significant for smaller vessels
No built‑in redundancy – a failure would affect the entire service power supply

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if: you need a reliable 300 kVA service generator with compact size, high efficiency and proven marine‑grade construction. Avoid if: the vessel requires dual‑frequency operation, higher voltage output, or you prefer an integrated redundancy scheme (multiple smaller units).

Use Cases: Commonly installed as ship service generators to supply hotel loads, auxiliary machinery, and emergency power on medium‑size commercial vessels; also used in offshore platforms where a single robust alternator is preferred.

Datasheet

LSA 44.3 350kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

350

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 350 kVA suitable for medium‑size vessel hotel loads
IP23 enclosure provides protection against splashing water and solid objects common in engine rooms
Class H insulation tolerates elevated operating temperatures, enhancing reliability
Four‑pole design ensures stable frequency and lower vibration compared with two‑pole units
Leroy‑Somer’s global service network simplifies spare‑parts logistics and maintenance

Weaknesses

IP23 rating does not protect against dust or heavy water ingress; unsuitable for harsher environments without additional shielding
Fixed 400 V/50 Hz output limits use on vessels that operate on 60 Hz systems
Physical size and weight are typical of high‑power generators, requiring ample engine‑room space
May require a dedicated cooling system (forced air or water) not included in the base unit
Initial capital cost can be higher than comparable generic brands

Typical Vessels: Medium‑size tankersContainer ships (up to ~5,000 TEU)Cruise liners and ferriesOffshore supply vesselsNaval auxiliary ships

Decision Guide: Choose if you need a proven 350 kVA generator for 400 V/50 Hz shipboard hotel power, have adequate engine‑room space and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), must run on 60 Hz, or has severe weight/space constraints.

Use Cases: Typically installed as a main auxiliary generator supplying hotel services, emergency power, or propulsion support on vessels with moderate to high electrical demand, especially where reliable temperature‑tolerant operation is critical.

Datasheet

LSA 44.3 350kVA 400V 60Hz unverified

· synchronous generator

Power (kVA)

350

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Robust cast‑iron frame provides high vibration resistance and long service life
Class H insulation permits operation at elevated temperatures up to 180 °C
IP23 enclosure is splash‑proof, suitable for typical engine‑room environments
Four‑pole design delivers stable 1500 rpm output when coupled to a 60 Hz prime mover
Standard 400 V/60 Hz rating matches most US‑registered vessels and auxiliary systems

Weaknesses

Limited to 60 Hz operation; not suitable for vessels that run on 50 Hz power grids
IP23 protection does not guard against dust ingress, requiring careful placement
Physical footprint can be large for small craft or retro‑fit projects
No integral cooling fan – external ventilation or water cooling must be provided
Fixed 400 V output may require additional transformers for higher voltage applications

Typical Vessels: TankerContainer shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise ship (auxiliary power)

Decision Guide: Choose the LSA 44.3 when you need a proven 350 kVA, 400 V generator for a 60 Hz US‑type vessel and have space for its size and ventilation requirements. Avoid it on 50 Hz ships, in confined spaces with strict dust protection needs, or where higher voltage outputs are required without additional transformers.

Use Cases: Typically installed as the main auxiliary generator on medium‑size tankers and bulk carriers to supply ship service power, run cargo pumps, and provide emergency power. Also used on offshore support vessels for deck‑machinery drives and hotel loads.

Datasheet

LSA 44.3 350kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

350

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and robust construction typical of Leroy‑Somer designs
Class H insulation allows operation in high ambient temperature zones
Proven overload capability (typically 110% for short periods)
Direct coupling to medium‑speed diesel engines simplifies installation
Long service life with low routine maintenance requirements

Weaknesses

IP23 enclosure provides limited protection against water ingress, unsuitable for harsh wet environments without additional shielding
Physical size and weight are relatively large for vessels with tight engine‑room space constraints
Designed for 50 Hz systems only; not directly compatible with 60 Hz markets without re‑engineering
Requires a dedicated cooling‑water circuit, adding complexity to the plant layout
Initial acquisition cost is higher than some low‑cost Asian alternatives

Typical Vessels: Offshore supply vesselFerryCoastal cargo shipResearch / survey vesselSmall container or bulk carrier (up to ~10 000 gt)

Decision Guide: Choose if you need a reliable 350 kVA generator for a medium‑size vessel, require high temperature tolerance and proven overload performance, and have space for an IP23‑rated unit with dedicated cooling water. Avoid if the installation area is very confined, the ship operates in severe wet conditions without extra protection, or the fleet standardises on 60 Hz equipment.

Use Cases: Typically installed as the main propulsion generator set on offshore supply vessels and ferries, or as a secondary/auxiliary generator on research ships where dependable continuous power is critical. It is also used in retrofits of older vessels needing a robust replacement for legacy alternators.

Datasheet

LSA 44.3 350kVA 440V 60Hz unverified

· synchronous generator

Power (kVA)

350

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

350 kVA output suitable for medium‑size vessel service loads
IP23 splash‑proof enclosure meets typical marine environmental requirements
H‑class insulation provides high thermal tolerance and long life
Four‑pole construction ensures stable 60 Hz operation
Leroy‑Somer reputation for robust, low‑maintenance generators

Weaknesses

IP23 rating does not protect against dust ingress, requiring additional ventilation
Designed for 60 Hz only, unsuitable for vessels operating on 50 Hz power systems
May require a dedicated cooling water circuit, adding installation complexity

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise liner

Decision Guide: Choose if you need a reliable 350 kVA marine alternator for 60 Hz systems and can accommodate a splash‑proof (IP23) enclosure with separate cooling water. Avoid if the vessel operates on 50 Hz, requires dust‑tight protection, or has strict weight/space constraints that favor newer compact units.

Use Cases: Commonly installed as auxiliary generators for main propulsion support, hotel load power, and emergency standby generation on medium‑size cargo and passenger vessels.

Datasheet

LSA 44.3 350kVA 690V 50Hz unverified

· low‑speed synchronous alternator

Power (kVA)

350

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency typical of low‑speed synchronous design (>95% at rated load)
Class H insulation allows operation up to 180 °C, extending service life in hot engine rooms
Robust IP23 enclosure suitable for standard marine environments while keeping size compact
Proven Leroy‑Somer brand reputation for reliability and long‑term support
Four‑pole design provides stable voltage and frequency at constant engine speed

Weaknesses

IP23 rating offers limited protection against water spray; not suitable for harsh wet locations without additional shielding
Relatively heavy compared with newer oil‑free or permanent‑magnet generators of similar power
Single‑frequency (50 Hz) only – not ideal for vessels that require dual 50/60 Hz capability
Requires external cooling fan or forced ventilation in high ambient temperatures
Fixed speed operation ties the alternator to a constant engine RPM, limiting flexibility

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 350 kVA, 690 V source for standard 50 Hz shipboard distribution and value the proven Leroy‑Somer brand with high temperature insulation. Avoid if you require higher ingress protection (e.g., IP55), dual‑frequency capability, or have strict weight/space constraints.

Use Cases: Commonly installed as a main auxiliary generator on medium‑size merchant vessels, providing power for hotel services, cargo handling equipment, and emergency systems; also used in dedicated emergency generator sets where rapid start‑up and robust construction are essential.

Datasheet

LSA 44.3 350kVA 690V 60Hz unverified

· low-speed water-cooled alternator

Power (kVA)

350

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) typical of Leroy‑Somer LSA series
Proven reliability with long service history in marine applications
Modular construction simplifies installation and maintenance
Brushless synchronous design reduces wear and extends MTBF
Standard 690 V output compatible with most shipboard electrical systems

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh wet environments without additional shielding
Requires an external cooling system (water pump, heat exchangers), adding complexity and maintenance
Physical size and weight are larger than newer compact generator sets of similar rating
Single‑frequency (60 Hz) only – not suited for vessels needing dual‑frequency capability
Insulation class H limits maximum operating temperature compared with higher‑class alternatives

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrierNaval auxiliary

Decision Guide: Choose if you need a robust, proven 350 kVA generator with standard 690 V output and can accommodate an external water‑cooling system. Avoid if the installation demands higher ingress protection (e.g., IP65), dual‑frequency operation, or the smallest possible footprint.

Use Cases: Commonly installed as the main propulsion auxiliary generator on medium‑size cargo vessels, as hotel‑load generators on cruise ships, and as emergency power sources on offshore platforms where reliability and ease of maintenance are paramount.

Datasheet

LSA 44.3 400kVA 400V 50Hz unverified

· Brushless synchronous alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal capability with Class H insulation allowing robust operation in demanding environments
Compact four‑pole construction (1500 rpm at 50 Hz) suitable for limited engine‑room space
Proven reliability of Leroy‑Somer marine series with long service life
IP23 enclosure provides basic protection against dust and splashing water, adequate for most auxiliary rooms
Standard 400 V output matches common shipboard distribution systems

Weaknesses

IP23 rating does not protect against heavy spray or immersion; additional sealing may be required in harsh climates
Requires an external cooling system (air‑forced) which adds to installation complexity
Separate exciter unit is needed for the brushless design, increasing parts count
Weight and mounting dimensions are relatively high for a 400 kVA unit (exact data not disclosed)
Limited to 400 V; vessels needing higher voltage may need step‑up transformers

Typical Vessels: Container shipsBulk carriersCruise linersOffshore supply vesselsFerries

Decision Guide: Choose if: you require a mid‑size (≈400 kVA) auxiliary generator with proven durability, compact footprint and standard 400 V output for typical hotel loads. Avoid if: the installation demands higher ingress protection (IP55 or above), integrated digital control packages, or a fully sealed marine‑grade unit without additional protective measures.

Use Cases: Commonly installed as an auxiliary power source for shipboard hotel services, emergency generators on medium‑size vessels, and shore‑power generation where a reliable 400 kVA supply is needed. It is also used in retrofits where space constraints favor a four‑pole brushless design.

Datasheet

LSA 44.3 400kVA 400V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and relatively low weight compared with low‑speed alternatives of the same rating
Robust IP23 enclosure suitable for indoor engine‑room environments
Class H insulation allows operation at higher temperatures, reducing cooling system size
Four‑pole design provides good voltage regulation and reduced harmonic content
Widely supported service network from Leroy‑Somer/Nidec

Weaknesses

IP23 rating offers limited protection against water spray; not suitable for exposed or wet‑deck locations
Designed for 400 V/60 Hz only – not directly compatible with 50 Hz or higher‑voltage shipboard systems without transformers
Requires an external diesel engine coupling; not a complete generator set
High‑speed operation may lead to higher bearing wear compared with low‑speed, direct‑drive units

Typical Vessels: Offshore Supply Vessel (OSV)Platform Supply Vessel (PSV)FerrySmall Cruise ShipNaval auxiliary

Certifications: ABSDNV‑GL

Decision Guide: Choose if you need a compact 400 kVA, 400 V/60 Hz alternator for an indoor engine room on vessels operating in US or other 60 Hz markets and value proven service support. Avoid if the installation requires higher ingress protection (IP66+), operation at 50 Hz, or a fully integrated generator set with low‑speed direct drive.

Use Cases: Typically installed as the main alternator on medium‑size offshore supply vessels and ferries where space is limited but reliable power generation for propulsion auxiliaries, hotel loads, and emergency systems is required. Also used on naval support ships that run US‑standard electrical systems.

Datasheet

LSA 44.3 400kVA 440V 50Hz unverified

· marine synchronous alternator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability of the Leroy‑Somer LSA series in commercial fleets
Insulation class H allows operation at elevated temperatures (up to ~180 °C)
Standard 440 V/50 Hz output matches most marine electrical systems
Modular construction simplifies installation and routine maintenance
Robust IP23 enclosure protects against dust and light spray, suitable for deck‑mounted installations

Weaknesses

IP23 rating does not protect against heavy water ingress or immersion
Relatively large physical size compared with newer compact generator sets
No integrated low‑noise acoustic treatment; may require additional silencing measures
Single‑frequency (50 Hz) only – not suitable for vessels requiring 60 Hz capability
Requires an external governor/control unit for speed regulation

Typical Vessels: TankerBulk CarrierContainer ShipCruise VesselOffshore Supply Vessel

Decision Guide: Choose if you need a proven 400 kVA marine alternator with robust construction, standard 440 V/50 Hz output and can accommodate an IP23 enclosure. Ideal for vessels already standardized on Leroy‑Somer equipment or where temperature resilience (class H) is important. Avoid if the installation demands higher ingress protection (IP44+), lower acoustic signature, dual‑frequency operation, or a more compact footprint.

Use Cases: Typically installed as auxiliary generators to supply hotel loads, emergency power, or shore‑power conversion on commercial vessels; also used in dedicated generator rooms for continuous main‑engine support where reliable, high‑temperature tolerant alternators are required.

Datasheet

LSA 44.3 400kVA 440V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈96%) and low fuel consumption when paired with a diesel engine
Robust class‑H insulation suitable for high temperature marine environments
Compact IP23 enclosure provides protection against splashing water while allowing easy access for maintenance
Standard 4‑pole design yields stable 60 Hz output with reduced vibration
Widely accepted by classification societies, simplifying installation approval

Weaknesses

IP23 rating does not protect against dust ingress; unsuitable for harsh offshore spray zones without additional shielding
Fixed voltage (440 V) limits flexibility for vessels requiring 415 V or other standards without transformer conversion
No built‑in exhaust gas cleaning; emissions depend entirely on the coupled engine
Limited to 400 kVA – may be undersized for large cruise ships or high‑power hotel loads

Typical Vessels: Container shipBulk carrierGeneral cargo vesselFerryOffshore supply vesselNaval auxiliary

Certifications: DNVABS

Decision Guide: Choose if you need a reliable 400 kVA, 60 Hz marine generator with proven classification approvals and can accommodate an IP23 environment. Avoid if the vessel operates in dusty or heavily sprayed conditions requiring higher ingress protection, or if power demand exceeds 400 kVA or different voltage levels are required.

Use Cases: Typically installed as an auxiliary generator on medium‑size merchant ships to supply hotel loads, emergency power, and support propulsion auxiliaries. Frequently paired with medium‑speed diesel engines in the 1500–1800 rpm range for continuous operation on container and bulk carriers.

Datasheet

LSA 44.3 400kVA 690V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint relative to its 400 kVA rating, easing installation in limited engine‑room spaces.
IP23 enclosure protects against splashing water and dust while allowing easy access for maintenance.
Class H insulation permits operation at higher ambient temperatures common on board vessels.
Proven reliability of the Leroy‑Somer LSA series with long service intervals and robust mechanical design.
Integrated cooling system (air‑forced) suited to typical marine diesel set operating conditions.

Weaknesses

IP23 rating is not fully sealed; unsuitable for environments requiring higher ingress protection (e.g., wet decks).
Requires an external exciter unit, adding complexity compared with self‑excited generators.
Relatively high initial capital cost versus lower‑rated or less robust alternatives.
Weight and mounting dimensions are significant; may demand reinforced foundations in smaller vessels.

Typical Vessels: Container shipBulk carrierTankerGeneral cargo vesselOffshore supply vessel

Decision Guide: Choose if you need a reliable 400 kVA auxiliary generator with compact size, high temperature tolerance and easy maintenance access on medium‑ to large merchant vessels. Avoid if the installation area requires a fully sealed (IP≥54) unit, or if budget constraints favor lower‑cost, lower‑rated generators.

Use Cases: Commonly installed as an auxiliary power source for shipboard electrical distribution, providing propulsion support services, hotel loads, and emergency power in case of main engine failure. Frequently paired with medium‑speed diesel engines on vessels that operate long voyages and need a robust standby generation capability.

Datasheet

LSA 44.3 400kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (400 kVA) suitable for demanding hotel and emergency loads.
Class‑H insulation allows operation in high‑temperature environments with good thermal endurance.
Low‑speed (4‑pole) design reduces mechanical stress on the prime mover and extends bearing life.
Proven Leroy‑Somer brand reputation for reliability and long service intervals.
IP23 enclosure provides basic protection against dust and splash water typical of engine rooms.

Weaknesses

IP23 rating offers limited ingress protection; not suitable for harsh, wet deck installations without additional shielding.
Relatively heavy construction compared with newer compact generator sets.
Fixed 690 V output limits flexibility for vessels that standardise on other voltage levels (e.g., 440 V).
Requires external control and monitoring equipment – no integrated automation panel supplied.
Maintenance intervals are longer than some modern oil‑free or permanent‑magnet designs.

Typical Vessels: Crude Oil TankerContainer ShipBulk CarrierCruise LinerOffshore Supply Vessel

Decision Guide: Choose if you need a proven, high‑output 400 kVA alternator with robust thermal performance for auxiliary or emergency power on large ocean‑going vessels. Avoid if the installation demands higher ingress protection (IP55+), lighter weight, or a different voltage standard without additional transformers.

Use Cases: Commonly installed as main hotel‑load generator, emergency standby power source, or as part of a diesel‑electric propulsion system where stable 690 V three‑phase supply is required. Frequently found in engine rooms of tankers and container ships to support cargo handling equipment, HVAC, and navigation systems.

Datasheet

LSA 44.3 450kVA 400V 50Hz unverified

· Brushless synchronous generator

Power (kVA)

450

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation at elevated temperatures without derating.
Brushless design eliminates brush wear, reducing routine maintenance.
Compact layout for its power rating fits well in limited engine‑room spaces.
Leroy‑Somer reputation for reliability and long service life in marine environments.
Standard 4‑pole construction provides 1500 rpm at 50 Hz, matching most ship propulsion gearboxes.

Weaknesses

IP23 rating only protects against splash; not suitable for areas exposed to heavy spray or immersion.
External forced‑air cooling may be required in high ambient temperature zones.
Fixed 400 V/50 Hz output limits use on vessels that operate on 60 Hz systems.
No integrated control panel – a separate governor/controller is needed.

Typical Vessels: Container shipBulk carrierTankerCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if: you need a proven 450 kVA auxiliary generator for 50 Hz vessels, value low‑maintenance brushless operation, and have adequate ventilation to meet the IP23 rating. Avoid if: the installation requires higher ingress protection (IP44 or above), must run on 60 Hz, or demands an integrated control package.

Use Cases: Commonly installed as a main auxiliary generator supplying hotel services, cargo‑handling equipment, and emergency power on medium‑size merchant vessels; also used in offshore platforms where reliable, low‑maintenance power is critical.

Datasheet

LSA 44.3 450kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

450

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) and robust class‑H insulation allowing operation in high‑temperature engine rooms
Proven reliability from a long‑standing marine generator brand (Leroy‑Somer)
Compact, air‑cooled IP23 enclosure suitable for typical shipboard installations
Standard 400 V/60 Hz output matches most US‑registered vessel electrical systems
Direct coupling to medium‑speed diesel engines without need for gear reduction

Weaknesses

IP23 rating provides only splash protection; not suitable for harsh wet‑deck or explosion‑prone areas
Fixed 4‑pole speed (1800 rpm at 60 Hz) limits use with variable‑speed prime movers
Requires external excitation system; no built‑in exciter in this basic model
Weight and dimensions are relatively high for the power rating, affecting installation space
No integrated sound‑attenuation features – may need additional acoustic treatment

Typical Vessels: Container shipProduct tankerBulk carrierOffshore supply vesselCruise ferry

Certifications: DNV

Decision Guide: Choose if you need a reliable 450 kVA auxiliary generator with standard 400 V/60 Hz output, class‑H insulation for high‑temperature rooms, and an IP23 enclosure is sufficient. Avoid if the installation requires higher ingress protection (IP55+), variable‑speed operation, or integrated sound‑proofing.

Use Cases: Commonly installed as a main auxiliary generator on medium‑size merchant vessels, providing power for hotel services, cargo handling equipment, and emergency systems; also used in standby/emergency configurations where rapid start‑up is required.

Datasheet

LSA 44.3 450kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

450

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 450 kVA suitable for medium‑size vessel hotel loads
Class H insulation provides good thermal endurance
Proven Leroy‑Somer reliability with a long service history in marine applications
Standard 4‑pole design offers stable voltage and frequency characteristics
Modular construction simplifies installation and routine maintenance

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and water spray; additional protection may be required in harsh environments
Fixed 50 Hz frequency limits use on vessels operating with 60 Hz systems
Physical size and weight are larger than newer high‑speed generator sets, impacting space‑critical installations
No built‑in sound attenuation; external muffling may be needed for noise‑sensitive areas
Limited to 440 V output; step‑up/down transformers required for other voltage levels

Typical Vessels: Container shipBulk carrierTankerCruise liner (auxiliary power)Offshore supply vessel

Decision Guide: Choose if you need a rugged, proven 450 kVA auxiliary generator with standard 440 V/50 Hz output and can accommodate an IP23 enclosure. Avoid if the installation requires higher protection (IP55+), 60 Hz operation, or tighter space constraints where a more compact high‑speed unit would be preferable.

Use Cases: Commonly installed as part of the ship's auxiliary power plant to supply hotel services, cargo handling equipment, and emergency generators on medium‑to‑large commercial vessels. Also used in retrofits where a reliable, low‑maintenance generator is required to replace aging units.

Datasheet

LSA 44.3 450kVA 440V 60Hz unverified

· marine alternator

Power (kVA)

450

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature zones
Robust 4‑pole construction provides stable 60 Hz output with low vibration
Proven Leroy‑Somer reliability and long service intervals
Modular design simplifies installation and routine maintenance
IP23 enclosure is suitable for protected indoor engine‑room locations

Weaknesses

IP23 rating offers limited protection against water spray; not suited for exposed or wet locations
Only a 60 Hz version – unsuitable where 50 Hz power standards are required
Physical size and weight typical of 450 kVA units may demand dedicated space in compact engine rooms
Requires a separate prime‑mover (diesel engine) – overall system cost can be higher than integrated generator sets

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer ships (mid‑size)LNG carriers (hotel load)

Decision Guide: Choose if you need a reliable 450 kVA, 60 Hz alternator with high temperature capability and can provide an indoor, protected installation. Avoid if the vessel requires higher ingress protection (e.g., IP55), operates on 50 Hz grids, or has severe space constraints.

Use Cases: Commonly installed as part of auxiliary generator sets to supply hotel loads, navigation equipment, and emergency power on commercial vessels; also used in shore‑power conversion units where a stable 60 Hz output is required.

Datasheet

LSA 44.3 450kVA 690V 50Hz unverified

· brushless alternator

Power (kVA)

450

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Standard 4‑pole design (1500 rpm) gives high efficiency and low vibration.
Brush‑less construction reduces maintenance intervals.
Robust H‑class insulation allows operation in high‑temperature environments.
Compact size for a 450 kVA unit, facilitating installation in limited engine‑room space.
Widely accepted by classification societies, easing approval processes.

Weaknesses

IP23 enclosure provides only limited protection against water spray; not suitable for exposed deck installations.
Relatively heavy compared with newer high‑speed compact generators of similar rating.
Requires an external cooling system (air or liquid) which adds to installation complexity.
Single‑unit design offers no built‑in redundancy; a second unit is needed for critical backup.
Control and protection gear are not integrated, requiring separate auxiliary equipment.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: DNVABS

Decision Guide: Choose if: you need a proven, medium‑power (≈450 kVA) generator with standard 690 V output, have space for an IP23‑rated unit, and prefer low‑maintenance brushless technology. Avoid if: the installation requires higher ingress protection (IP55+), weight is a critical constraint, or you demand built‑in redundancy without adding a second machine.

Use Cases: Typically installed as the main auxiliary generator on medium‑size cargo vessels to supply hotel loads and propulsion auxiliaries, or as an emergency power source in ships where space for larger generators is limited.

Datasheet

LSA 44.3 450kVA 690V 60Hz unverified

· low‑speed synchronous marine alternator

Power (kVA)

450

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption
Low rotational speed (1500 rpm) results in reduced vibration and noise
Robust IP23 enclosure protects against splashing water and dust in engine rooms
Class‑H insulation allows operation at elevated temperatures typical of marine environments
Proven Leroy‑Somer design with widespread service network for spare parts

Weaknesses

Physical size and weight larger than comparable high‑speed units, impacting installation space
Requires dedicated ventilation to maintain temperature limits due to enclosed design
Fixed 690 V output may limit compatibility with vessels using alternative voltage systems
Higher upfront cost relative to generic industrial alternators of similar rating
External excitation control needed for some installations

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable, high‑efficiency 450 kVA generator for vessels that operate on a 690 V system and can accommodate the unit's size and ventilation requirements. Avoid if space is at a premium, the vessel uses a different voltage standard, or budget constraints favor a smaller high‑speed alternator.

Use Cases: Commonly installed as part of the main propulsion generator set on medium‑to‑large cargo vessels, or as an auxiliary generator supplying hotel loads and emergency power on cruise ships and offshore supply vessels. Its low‑speed design makes it suitable for engine rooms where vibration reduction is critical.

Datasheet

LSA 44.3 500kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature environments.
Proven Leroy‑Somer reliability with extensive service history on commercial vessels.
Modular construction simplifies installation and routine maintenance aboard ship.
Four‑pole design provides stable 1500 rpm operation at 50 Hz, matching standard marine power systems.

Weaknesses

IP23 enclosure offers limited protection against water ingress; not ideal for harsh spray zones.
Fixed speed (1500 rpm) may reduce fuel efficiency when used as a main generator on variable‑speed diesel sets.
Physical size and weight are typical of 500 kVA units, requiring substantial engine room space.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore support vessel

Decision Guide: Choose the LSA 44.3 if you need a dependable 500 kVA auxiliary generator that matches standard 400 V/50 Hz shipboard power and you can accommodate an IP23 enclosure. Avoid it when higher ingress protection (e.g., IP55) is required, space is at a premium, or variable‑speed operation is essential.

Use Cases: Commonly installed as the main auxiliary generator on large commercial vessels, as a standby/emergency generator for critical ship services, and in shore‑power conversion sets where robust, continuous power output is needed.

Datasheet

LSA 44.3 500kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal capability (class H) allowing operation in hot engine rooms.
Compact design relative to its 500 kVA rating, saving space on board.
Proven reliability from Leroy‑Somer’s long maritime heritage.
Standard 400 V/60 Hz output matches many US‑flagged vessel power systems.
Straightforward maintenance with accessible brush and bearing arrangements.

Weaknesses

IP23 enclosure provides limited protection against water spray; not suitable for exposed deck installations.
Requires an external cooling system (air or water) to maintain temperature limits.
Designed for 60 Hz only, limiting use on vessels that operate on 50 Hz grids.
Physical footprint larger than newer high‑speed generator sets of comparable power.
Spare parts may be less readily available in regions where Leroy‑Somer has limited service network.

Typical Vessels: Container shipsCruise liners (US‑flagged)Offshore supply vesselsTankers with US‑type power distributionLNG carriers operating on 60 Hz

Decision Guide: Choose the LSA 44.3 if you need a rugged 500 kVA alternator for a 400 V/60 Hz system, value class‑H insulation for high ambient temperatures, and have space for its footprint. Avoid it on vessels requiring higher ingress protection (IP65+), 50 Hz operation, or where weight and size are critical constraints.

Use Cases: Typically installed as the main auxiliary generator on large ocean‑going vessels that run US‑type electrical systems, providing shipboard power for propulsion auxiliaries, hotel loads, and emergency supply. It is also used in offshore platforms where a reliable, high‑temperature tolerant alternator is required.

Datasheet

LSA 44.3 500kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

500 kVA output matches the standard medium‑size vessel power requirement
H‑class insulation permits higher operating temperatures and improves durability
IP23 enclosure provides adequate protection for typical engine‑room environments
Four‑pole design delivers stable 50 Hz frequency compatible with most shipboard electrical systems
Leroy‑Somer’s global service network simplifies maintenance and spare‑parts logistics

Weaknesses

IP23 rating does not protect against full water immersion, limiting placement in very wet areas
Physical dimensions are larger than some newer compact generator sets of similar power
Requires an external cooling system (air or water) to maintain temperature limits
Single‑frequency design (50 Hz only) may be unsuitable for vessels that need dual‑frequency capability
Weight can be substantial, affecting installation planning

Typical Vessels: Container shipBulk carrierGeneral cargo vesselCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven 500 kVA generator with standard 440 V output, robust H‑class insulation, and a reliable after‑sales network; the engine room environment meets IP23 protection levels. Avoid if: space is at a premium, dual‑frequency (50/60 Hz) capability is required, or you need a fully sealed (IP66+) unit for harsh wet locations.

Use Cases: The LSA 44.3 is typically installed as the main auxiliary generator on medium‑size merchant ships and cruise vessels, supplying shipboard hotel loads, navigation systems, and emergency power. It is also used on offshore support vessels where a stable 50 Hz supply for cargo handling equipment and crew amenities is required.

Datasheet

LSA 44.3 500kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (500 kVA) suitable for large auxiliary plants
Class‑H insulation allows operation at elevated temperatures
IP23 rating provides protection against dust and water spray typical of engine rooms
4‑pole design matches low‑speed diesel engines (≈1800 rpm at 60 Hz)
Leroy‑Somer reputation for reliability and long service life

Weaknesses

IP23 is not fully watertight; additional sealing may be required in harsh marine environments
Large physical size and weight typical of 500 kVA units can limit installation space
Designed for 60 Hz only – unsuitable for vessels operating on 50 Hz systems without frequency conversion
May require external forced‑air cooling, adding complexity to the installation
Initial capital cost is higher than some generic competitors

Typical Vessels: TankersContainer shipsCruise linersOffshore supply vesselsLarge bulk carriers

Decision Guide: Choose if you need a proven 500 kVA auxiliary generator that matches low‑speed diesel engines, can tolerate high operating temperatures and you operate on a 60 Hz system. Avoid if the installation demands a higher IP rating, strict weight/space limits, or a 50 Hz power supply.

Use Cases: Commonly installed as part of the main auxiliary power plant on large commercial vessels, providing continuous shipboard electricity for hotel loads, cargo handling equipment, and emergency power. Also used in shore‑power conversion sets where a robust, high‑capacity generator is required.

Datasheet

LSA 44.3 500kVA 690V 50Hz unverified

· synchronous marine alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation tolerates high operating temperatures, enhancing reliability under heavy loads.
Four‑pole (1500 rpm) design matches directly with medium‑speed diesel engines, reducing the need for reduction gearing.
Proven Leroy‑Somer reputation for long service life and low maintenance intervals.
IP23 enclosure is adequate for typical engine‑room environments while allowing easy access for inspection.
Standard 690 V output fits most existing ship electrical distribution systems.

Weaknesses

IP23 rating offers limited protection against water spray; not suitable for exposed or harsh external installations.
Physical size and weight are relatively large compared to newer compact, high‑speed generators.
Class H insulation requires effective cooling management to avoid overheating in confined spaces.
Fixed 690 V output may require additional transformers for vessels operating on lower voltage busbars.
No built‑in advanced sound attenuation; auxiliary silencing measures are needed.

Typical Vessels: Bulk CarrierContainer ShipProduct TankerCruise VesselOffshore Supply Vessel

Decision Guide: Choose if you need a reliable, medium‑speed 500 kVA generator for standard 690 V shipboard systems and can accommodate an IP23 engine‑room installation. Avoid if the vessel requires higher ingress protection (e.g., IP55), tighter space constraints, or integrated noise‑reduction features.

Use Cases: Commonly installed as a main auxiliary generator supplying hotel load, emergency power, and occasional propulsion support on medium‑to‑large commercial vessels; also used in retrofits where existing 690 V infrastructure is retained.

Datasheet

LSA 44.3 500kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and stable voltage regulation at 690 V three‑phase busbars
Class‑H insulation permits operation up to 180 °C, enhancing thermal durability
Compact footprint for a 500 kVA unit, saving engine‑room space
Proven Leroy‑Somer reliability with long service life in marine environments
Standard 4‑pole design simplifies integration with existing control and protection systems

Weaknesses

IP23 enclosure offers limited protection against water spray; not suitable for exposed deck installations
Requires an external forced‑air cooling system, adding auxiliary components
Only available in 60 Hz; vessels operating on 50 Hz would need a different model
Relatively heavy compared with newer lightweight aluminum‑frame generators

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselLNG carrier with 690 V distribution system

Decision Guide: Choose if you need a reliable 500 kVA auxiliary generator at 690 V 60 Hz, have space constraints, and operate in an engine‑room environment where IP23 protection is sufficient. Avoid if the installation requires higher ingress protection (e.g., IP55), 50 Hz operation, or weight‑critical applications.

Use Cases: Typically installed as a main auxiliary generator on large ocean‑going vessels to supply hotel loads, cargo handling equipment, and emergency power; also used in load‑sharing configurations with other generators for redundancy.

Datasheet

LSA 46.3 500kVA 400V 50Hz unverified

· low-speed marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency brushless design reduces maintenance needs
Class H insulation allows operation in elevated ambient temperatures
Proven Leroy‑Somer reliability with a long service history in marine applications
Compact footprint for a 500 kVA rating, easing installation in engine rooms
Standard 400 V output matches most shipboard auxiliary bus systems

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for wet locations without additional shielding
Fixed 50 Hz frequency limits use on vessels operating on 60 Hz grids
Weight and size are still significant compared with newer lightweight generator sets
Requires a dedicated cooling system (air‑forced or water‑cooled) to maintain temperature limits
No built‑in power factor correction; external equipment may be needed for reactive load compensation

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselFerry

Decision Guide: Choose if you need a dependable 500 kVA auxiliary generator that matches a 400 V, 50 Hz shipboard bus and can tolerate high ambient temperatures. Avoid if the installation requires higher voltage, water‑tight (IP55+) enclosures, or operation on a 60 Hz system.

Use Cases: Commonly installed as part of an auxiliary power plant on merchant vessels for hotel load, cargo handling equipment, emergency power supply and to support diesel engine start‑up. Frequently paired with diesel engines in generator sets for continuous or standby service.

Datasheet

LSA 46.3 500kVA 400V 60Hz unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 500 kVA suitable for medium‑size vessels' hotel and emergency loads.
Class H insulation allows operation at elevated temperatures, improving reliability in hot climates.
Robust IP23 enclosure provides protection against dust and limited water spray while keeping the unit compact for deck installation.
Four‑pole design runs at 1500 rpm on 60 Hz systems, enabling direct coupling to standard marine drive gear without excessive speed reduction.
Leroy‑Somer’s global service network simplifies spare‑parts logistics and maintenance support.

Weaknesses

IP23 rating is not fully splash‑proof; additional shielding may be required in harsh sea spray environments.
Designed for 60 Hz operation only, limiting use on vessels that standardise on 50 Hz power systems.
Physical size and weight are typical of a 500 kVA unit, requiring dedicated space and structural support on board.
If the model uses brushed excitation, periodic brush inspection and replacement add to maintenance workload.
Air‑forced cooling depends on adequate ventilation; poor airflow can reduce thermal margin.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven 500 kVA auxiliary generator for a 400 V/60 Hz system, value Leroy‑Somer’s service network, and can accommodate an IP23 enclosure with proper ventilation. Avoid if the vessel operates on a 50 Hz grid, requires a higher ingress protection rating (e.g., IP55), or has severe exposure to sea spray that exceeds the IP23 limit.

Use Cases: Typically installed as a main auxiliary generator supplying hotel services, emergency power, and start‑up power for propulsion systems on medium‑size commercial vessels. It is also used in dynamic positioning setups where reliable, continuous electrical output is critical.

Datasheet

LSA 46.3 500kVA 440V 50Hz unverified

· low‑speed marine alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 500 kVA suitable for large auxiliary loads
H‑class insulation allows operation in elevated temperature environments
Proven Leroy‑Somer reliability and long service life in maritime applications
Four‑pole design provides stable frequency and low vibration
Modular mounting facilitates integration into existing generator rooms

Weaknesses

IP23 enclosure only protects against splashing water; not dust‑tight or fully sealed
Fixed 440 V/50 Hz rating limits flexibility for vessels operating on other standards (e.g., 60 Hz)
Physical size and weight may be restrictive for smaller craft or retrofits
Requires dedicated cooling system, adding to installation complexity
Higher upfront cost compared with generic low‑priced alternatives

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a reliable 500 kVA auxiliary generator for a large merchant or offshore vessel, operate on a 440 V/50 Hz system, and value the proven European brand reputation. Avoid if your installation requires higher ingress protection (e.g., IP55), must run on 60 Hz, has severe space/weight constraints, or you are seeking the lowest possible capital cost.

Use Cases: Typically installed as part of a ship's main auxiliary power plant to supply hotel services, cargo handling equipment, and emergency generators on large commercial vessels; also used in standby/emergency generator sets where high reliability is mandatory.

Datasheet

LSA 46.3 500kVA 440V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal capability with Class H insulation allowing higher operating temperatures.
Proven Leroy‑Somer brand reputation for reliability in marine environments.
Four‑pole construction provides stable 1500 rpm operation at 60 Hz, matching common diesel engine speeds.
IP23 enclosure suitable for protected deck or machinery‑room installations.
Compact footprint relative to comparable 500 kVA generators, easing integration into existing spaces.

Weaknesses

IP23 rating offers limited protection against water ingress; not suited for exposed outdoor mounting.
Weight and dimensions are typical of large marine alternators, requiring robust support structures.
Only available in 60 Hz version, limiting use on vessels standardized to 50 Hz systems.
Requires a dedicated brushless exciter set, adding complexity to the drive system.

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a dependable 500 kVA auxiliary generator with high temperature tolerance and a proven brushless design for vessels operating on 60 Hz systems and can accommodate an IP23 protected installation. Avoid if: the installation requires higher ingress protection (e.g., IP55) or the vessel operates on 50 Hz, or weight/space constraints are critical.

Use Cases: Typically installed as a main auxiliary generator to supply shipboard hotel load, cargo handling equipment, and emergency power; also used in dedicated propulsion‑assist or dynamic positioning packages where a stable 500 kVA source is required.

Datasheet

LSA 46.3 500kVA 690V 50Hz unverified

· low-speed water-cooled alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 500 kVA in a relatively compact footprint.
Class H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms.
Robust low‑speed design provides longer bearing life and lower maintenance intervals.
Proven track record in marine auxiliary applications with good overload capability.

Weaknesses

IP23 enclosure is only splash‑proof; the unit must be installed in a protected space or equipped with additional sealing.
Requires an external cooling water circuit, adding complexity to installation.
Weight and mounting requirements may demand reinforced deck structures on smaller vessels.
Noise level can be higher than fully enclosed, sound‑treated generators.

Typical Vessels: Cruise shipFerryOffshore supply vesselContainer shipTanker

Certifications: DNV GL Type ApprovalABS Marine Certification

Decision Guide: Choose if you need a compact, high‑output auxiliary generator with robust thermal capability and can provide a protected installation space plus cooling water. Avoid if the vessel requires a fully sealed (IP55+) unit, has strict noise constraints, or lacks capacity for an external cooling circuit.

Use Cases: Commonly installed as the main auxiliary generator on cruise ships and ferries, providing ship‑board power for hotel services, navigation equipment, and emergency systems; also used in offshore supply vessels where high reliability and overload capability are critical.

Datasheet

LSA 46.3 500kVA 690V 60Hz unverified

· brushless synchronous generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption
Brushless design minimises maintenance and downtime
Robust cast‑iron frame provides long service life in harsh marine environments
Integrated forced‑air cooling allows continuous operation at rated load
110 % overload capability for short periods supports peak demand

Weaknesses

IP23 enclosure only protects against dust and limited water spray; additional protection may be required in wet decks
Fixed 690 V output often necessitates a step‑down transformer to match standard ship voltages (440/415 V)
Heavy cast‑iron construction adds weight, impacting vessel weight budgeting
Requires precise alignment with the driving engine, increasing installation complexity
Designed for 4‑pole speed (1500 rpm at 60 Hz), unsuitable for low‑speed engines without gear reduction

Typical Vessels: Container ShipBulk CarrierTankerGeneral Cargo VesselOffshore Supply VesselCruise Ship

Decision Guide: Choose if you need a reliable, high‑efficiency generator for medium‑speed diesel engines on vessels that can accommodate a 690 V output and the weight of a cast‑iron unit. Avoid if your vessel operates with low‑speed engines, requires a lower voltage directly from the alternator, or demands higher ingress protection than IP23.

Use Cases: Typically installed as the main propulsion generator on medium‑speed diesel‑driven ships, or as an auxiliary power source for cargo handling equipment and hotel loads. It is also used in emergency power arrangements where its overload capability and robustness are valued.

Datasheet

LSA 46.3 600kVA 400V 50Hz unverified

· brushless synchronous generator

Power (kVA)

600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature zones
Proven reliability of Leroy‑Somer’s LSA series with extensive service history
Brushless design reduces maintenance and eliminates brush wear
Four‑pole construction provides stable 1500 rpm synchronous speed at 50 Hz
Compact for its power rating, fitting typical engine‑room layouts

Weaknesses

IP23 enclosure offers only splash protection; additional sealing may be required in harsh marine environments
Fixed synchronous speed limits flexibility for variable‑speed applications
External cooling system is needed, adding to installation complexity
Size and weight are substantial compared with newer high‑efficiency units of similar rating

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a reliable 600 kVA auxiliary generator with proven brushless technology and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55) or variable‑speed generation capability.

Use Cases: Commonly installed as main auxiliary power for hotel load, emergency power supply, and support of cargo handling equipment on large commercial vessels where a stable 400 V/50 Hz source is required.

Datasheet

LSA 46.3 600kVA 400V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and good overload capability (typically 110% for short periods)
Robust mechanical design with proven sea‑going reliability
Compatible with a wide range of marine prime movers (diesel, gas)
Compact footprint relative to its 600 kVA rating
Standard insulation class H provides thermal resilience

Weaknesses

IP23 enclosure offers only limited protection against water ingress and dust; not suitable for harsh wet locations without additional shielding
Older design lacks integrated digital monitoring (requires external instrumentation)
Weight and size are higher than newer compact, high‑speed generators of the same rating
Requires periodic bearing lubrication and alignment checks

Typical Vessels: Medium‑size tankersContainer shipsBulk carriersCruise vesselsOffshore supply & support vessels

Decision Guide: Choose if you need a proven, high‑capacity generator for medium‑sized vessels and can accommodate an IP23 enclosure with external protection. Avoid if the installation demands fully sealed (IP55+) equipment, integrated condition‑monitoring, or the lowest possible weight/volume.

Use Cases: Commonly installed as the main service power source on diesel‑driven propulsion plants of tankers, container ships and offshore support vessels, often paired with a medium‑speed diesel engine in a generator set to supply shipboard electricity and emergency power.

Datasheet

LSA 46.3 600kVA 440V 50Hz unverified

· marine alternator

Power (kVA)

600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) allows operation in elevated temperature zones typical of engine rooms.
Standard 440 V/50 Hz output matches most existing ship electrical distribution systems, simplifying integration.
Compact footprint for a 600 kVA unit, saving valuable space in machinery spaces.
Reputable Leroy‑Somer brand known for durability and long service life in marine environments.
IP23 enclosure provides basic protection against dust and spray, suitable when housed within a protected compartment.

Weaknesses

IP23 rating may be insufficient for direct exposure to harsh sea‑spray; additional protective housing is often required.
Limited to 50 Hz operation only – not suitable for vessels that require dual‑frequency (60 Hz) capability.
Maximum output of 600 kVA may be undersized for large cruise ships or high‑power offshore platforms.
Air‑cooled design can be less effective in very hot ambient conditions without supplemental cooling.

Typical Vessels: Container shipGeneral cargo vesselFerryOffshore supply vesselCruise liner (auxiliary power)

Decision Guide: Choose if you need a reliable, compact 600 kVA marine alternator that fits standard 440 V/50 Hz shipboard systems and can operate in moderate temperature zones. Avoid if the installation area is exposed to heavy spray or salt water without additional protection, if dual‑frequency capability is required, or if higher power output than 600 kVA is needed.

Use Cases: Typically installed as part of an auxiliary generator set to supply shipboard electrical loads such as lighting, HVAC, cargo handling equipment, and emergency power. Frequently used in vessels where space is limited and a proven, low‑maintenance alternator is preferred for continuous operation.

Datasheet

LSA 46.3 600kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (600 kVA) suitable for large auxiliary power demands
Class‑H insulation tolerates elevated operating temperatures typical of engine rooms
Low‑speed 4‑pole design (1500 rpm at 60 Hz) reduces mechanical wear and improves reliability
Proven Leroy‑Somer brand reputation for durability in marine environments
IP23 enclosure provides adequate protection against splashing water and accidental contact

Weaknesses

IP23 rating offers limited dust protection; not suitable for extremely harsh or corrosive compartments
Designed for 60 Hz operation only, limiting use on vessels that require 50 Hz power systems
Large physical size may demand significant installation space and structural support
External cooling system required in high‑load conditions, adding complexity
No integrated sound attenuation; additional muffling may be needed for noise‑sensitive areas

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10 000 TEU)Cruise linerOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a reliable 600 kVA generator for 60 Hz markets, value class‑H temperature tolerance and a proven low‑speed design, and have sufficient engine‑room space. Avoid if the installation requires a higher IP rating (e.g., dust‑tight), must operate on 50 Hz, or has strict weight/space constraints.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, emergency power, and support for propulsion auxiliaries on large commercial vessels; also used in offshore platforms where robust temperature handling is essential.

Datasheet

LSA 46.3 600kVA 690V 50Hz unverified

· high-speed marine alternator

Power (kVA)

600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 600 kVA in a relatively compact footprint for a 690 V system.
Class‑H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms.
Standard 4‑pole design provides stable 1500 rpm operation at 50 Hz, matching common marine electrical systems.
Leroy‑Somer reputation for robust construction and long service intervals.

Weaknesses

IP23 enclosure only protects against solid objects >12.5 mm and water spray; unsuitable for exposed or harsh wet locations.
High‑speed operation can generate more acoustic noise and may require additional sound insulation.
Requires dedicated ventilation and cooling space, increasing installation complexity on cramped engine rooms.
Fixed 690 V output may need step‑up/step‑down transformers for vessels using different bus voltages.

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if you need a reliable 600 kVA auxiliary generator for a protected engine‑room environment, value high temperature tolerance and compact size, and operate on a standard 690 V/50 Hz system. Avoid if the installation area is exposed to heavy spray or requires higher ingress protection (IP55+), or if low acoustic noise and dual‑frequency capability are critical.

Use Cases: Typically installed as the main auxiliary generator set on large merchant vessels, providing hotel power, cargo handling equipment electricity, and emergency backup. Also used on offshore support ships where a compact yet powerful alternator is required in a climate‑controlled engine room.

Datasheet

LSA 46.3 600kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (600 kVA) suitable for hotel and emergency loads
Class‑H insulation allows operation at elevated temperatures with good thermal endurance
Low‑speed 4‑pole design reduces mechanical wear and extends bearing life
Robust IP23 enclosure provides protection against dust and spray in typical deck installations
Leroy‑Somer reputation for reliability and long service intervals

Weaknesses

IP23 rating does not protect against heavy water ingress; additional shielding may be required in harsh environments
Physical size and weight are considerable, impacting installation space and handling
Requires external governor/control panel – no integrated automation package supplied
Fixed 690 V output may need step‑down transformers for vessels standardising on lower voltages
Limited to 4 poles; higher pole counts could offer smoother torque at very low speeds

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑power auxiliary generator with robust thermal capability and low‑speed operation for large merchant or offshore vessels. Avoid if the installation demands a higher ingress protection rating (e.g., IP55) or a more compact, integrated unit with built‑in control electronics.

Use Cases: Commonly installed as main auxiliary generators on tankers, container ships and bulk carriers to supply hotel services, cargo handling equipment, and emergency power. Also used on cruise ships and offshore support vessels where reliable, high‑capacity generation is critical.

Datasheet

LSA 46.3 700kVA 400V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

700

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (700 kVA) suitable for main auxiliary power needs
Class‑H insulation allows operation at elevated temperatures without derating
Brushless construction reduces maintenance and improves reliability
Standard 4‑pole, 1500 rpm speed matches 50 Hz systems, simplifying integration
Proven Leroy‑Somer brand with extensive service network in the maritime sector

Weaknesses

IP23 rating provides only limited protection against water ingress; additional shielding may be required in harsh marine environments
Physical size and weight are substantial for a 700 kVA unit, impacting installation space
Fixed‑speed operation limits flexibility for variable‑speed propulsion or hybrid concepts
Requires an external exciter set for brushless excitation, adding complexity to the generator set
Cooling is typically air‑forced; performance can be constrained in very hot ambient conditions

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: IMO D‑2

Decision Guide: Choose if you need a high‑power, low‑maintenance auxiliary generator for a large merchant or offshore vessel and have space for a standard IP23 enclosure. Avoid if the installation requires a higher ingress protection rating (e.g., IP55), variable‑speed operation, or very compact equipment.

Use Cases: Typically installed as the main auxiliary generator on large cargo ships, cruise vessels, and offshore platforms to supply shipboard electricity, emergency power, and shore‑power conversion. Also used in standby sets for critical systems where reliability is paramount.

Datasheet

LSA 46.3 700kVA 400V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

700

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (700 kVA) in a relatively compact footprint
Class H insulation allows operation at elevated temperatures
Robust IP23 enclosure suitable for typical engine‑room spray conditions
Four‑pole design provides stable 60 Hz frequency with low vibration
Widely used in marine auxiliary sets, offering proven reliability

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh wash‑down environments requiring higher IP ratings
Designed for 400 V/60 Hz – not directly compatible with 50 Hz or lower‑voltage ship systems without re‑engineering
Physical size and weight may demand dedicated generator room space on smaller vessels
Higher initial capital cost compared with lower‑rated marine alternators
Requires external cooling system in high ambient temperature zones

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a robust 700 kVA auxiliary source for 400 V/60 Hz ships, have sufficient engine‑room space, and operate in regions where US‑type electrical standards apply. Avoid if: the vessel requires higher ingress protection (IP54+), operates on 50 Hz systems, or has strict weight/space constraints.

Use Cases: Typically installed as part of a ship’s emergency generator set or main auxiliary power plant to supply hotel loads, cargo‑handling equipment, and dynamic positioning systems on large commercial vessels.

Datasheet

LSA 46.3 700kVA 440V 50Hz unverified

· synchronous alternator

Power (kVA)

700

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈94% at rated load) reducing fuel consumption
Robust cast‑iron frame with IP23 enclosure suitable for marine environments
Proven Leroy‑Somer brand reputation for long service life and low maintenance
Four‑pole design provides good overload capability (typically 110% for 30 min)
Standard insulation class H allows operation up to 180 °C hot spot temperature

Weaknesses

Relatively heavy compared with newer lightweight aluminum‑frame generators of similar rating
Requires external cooling system (forced air or water) adding installation complexity
Brushes (if brushed design) need periodic inspection and replacement
Limited to 50 Hz operation; not directly suitable for vessels requiring 60 Hz without a frequency converter
Initial capital cost higher than some competing Asian manufacturers

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if you need a reliable 700 kVA auxiliary generator with proven long‑term service on large commercial vessels and can accommodate its size and cooling requirements. Avoid if space, weight, or upfront cost constraints are critical, or if the vessel operates on a 60 Hz power system.

Use Cases: Commonly installed as an auxiliary/main generator to supply hotel loads, cargo handling equipment, and emergency power on ocean‑going merchant ships where dependable continuous operation is essential.

Datasheet

LSA 46.3 700kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

700

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 700 kVA suitable for large vessel hotel‑load and propulsion auxiliaries
Class H insulation tolerates elevated operating temperatures, enhancing durability
Proven Leroy‑Somer reputation for reliability and long service intervals
Four‑pole design provides stable 60 Hz frequency at moderate rotational speed (1800 rpm)
Modular construction allows relatively straightforward maintenance and part replacement

Weaknesses

IP23 enclosure offers limited protection against water ingress; additional shielding may be required in harsh marine environments
Physical size and weight are larger than high‑speed, compact generators of comparable rating
Fixed 60 Hz output limits use on vessels that operate on 50 Hz systems without a frequency converter
Requires adequate cooling ventilation to maintain Class H insulation performance

Typical Vessels: Container ShipCrude Oil TankerBulk CarrierCruise ShipOffshore Supply Vessel

Decision Guide: Choose this alternator if you need a reliable 700 kVA source for 60 Hz vessels, value the durability of Class H insulation, and have space for an IP23‑rated unit with standard ventilation. Avoid it when operating in highly corrosive or splash‑prone areas without additional protection, when a compact high‑speed generator is required, or when a 50 Hz system is mandatory.

Use Cases: Commonly installed as the main auxiliary generator on large ocean‑going vessels to supply hotel loads and support propulsion systems; also used as emergency power generators where high output and proven reliability are critical.

Datasheet

LSA 46.3 700kVA 690V 50Hz unverified

· low-speed marine alternator

Power (kVA)

700

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 700 kVA in a compact footprint for its rating
Insulation class H allows operation at elevated temperatures, improving reliability in hot engine rooms
Four‑pole design provides stable 50 Hz output with low harmonic distortion
Proven Leroy‑Somer mechanical robustness and long service intervals
Standard 690 V bus voltage matches most marine electrical architectures

Weaknesses

IP23 enclosure offers only limited protection against water ingress; may require additional shielding in harsh sea environments
Designed for 50 Hz only – not suitable where dual‑frequency (50/60 Hz) capability is required
Physical size and weight can be significant, impacting installation space on smaller vessels
External cooling system needed, adding complexity to the plant layout
Higher initial capital cost compared with some lower‑rated competitors

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsLNG carriersContainer ships (mid‑size)Naval auxiliary vessels

Decision Guide: Choose if you need a reliable 700 kVA source at 690 V 50 Hz, have space for an IP23 unit and can provide adequate environmental protection. Avoid on vessels operating in very wet or corrosive areas where a higher ingress‑protection rating (e.g., IP54) is mandatory, or when dual‑frequency capability is required.

Use Cases: Typically installed as the main generator on medium‑to‑large passenger ships and cargo carriers, providing primary propulsion support power and serving as an emergency source for critical hotel loads. Also used in offshore platforms where a robust, high‑temperature tolerant alternator is needed.

Datasheet

LSA 46.3 700kVA 690V 60Hz unverified

· high-speed synchronous marine generator

Power (kVA)

700

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density in a compact IP23 enclosure suitable for shipboard installation
Insulation class H provides excellent thermal endurance for harsh marine environments
Four‑pole design yields low vibration and stable 60 Hz output
Proven reliability from Leroy‑Somer, widely adopted in diesel‑electric propulsion systems
Standard 690 V bus compatibility simplifies integration with existing shipboard electrical distribution

Weaknesses

IP23 rating offers limited protection against dust and water; additional shielding may be required in wet areas
Fixed synchronous speed limits use with variable‑speed prime movers unless coupled to power electronics
Relatively heavy compared with newer lightweight alternatives such as permanent‑magnet generators
If brushed, requires periodic brush inspection and replacement
Size may restrict installation on vessels with tight space constraints

Typical Vessels: Bulk CarrierContainer ShipTankerCruise LinerOffshore Supply VesselNaval Auxiliary

Certifications: ABSDNV GL

Decision Guide: Choose if you need a robust, proven 700 kVA generator for auxiliary or emergency power on large vessels and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (e.g., IP55+), variable‑speed operation, or strict weight/space limits.

Use Cases: Commonly installed as the main auxiliary generator in diesel‑electric propulsion plants, providing hotel load power on cruise ships, emergency backup for critical systems, and primary power generation on offshore support vessels.

Datasheet

LSA 46.3 800kVA 400V 50Hz unverified

· brushless synchronous marine alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates slip rings, reducing maintenance intervals
High insulation class (H) provides excellent thermal endurance for overload periods
Standard 400 V/50 Hz output matches most shipboard electrical systems
Robust IP23 enclosure offers protection against dust and splashing water in engine rooms

Weaknesses

Large physical size may require significant installation space
Requires dedicated cooling‑water system for continuous operation
Fixed voltage/frequency limits flexibility for vessels using alternative standards (e.g., 60 Hz)
External excitation system needed, adding to auxiliary equipment count

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, low‑maintenance 800 kVA generator that matches the common 400 V/50 Hz shipboard bus and can tolerate short overloads. Avoid if your vessel operates on a different voltage or frequency standard, or if space and weight constraints are critical.

Use Cases: Main propulsion auxiliary generator on medium‑size cargo vessels, hotel‑load power supply on cruise ships, emergency standby generation for critical systems where reliability and quick start‑up are essential.

Datasheet

LSA 46.3 800kVA 400V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 800 kVA in a relatively compact footprint for its class
Class H insulation allows operation up to 180 °C, enhancing thermal robustness
Proven Leroy‑Somer reliability with long service history on commercial vessels
Standard 4‑pole design provides good voltage regulation and low harmonic distortion
IP23 enclosure simplifies installation while protecting against solid foreign objects

Weaknesses

IP23 rating offers limited protection against water spray; additional shielding may be required in harsh marine environments
Designed for 60 Hz only, unsuitable for vessels that need dual‑frequency (50/60 Hz) capability
Physical size and weight can be a constraint on smaller ships or retrofits
If brush‑type, requires periodic brush inspection/replacement (common on many synchronous generators)
Noise and vibration levels are typical of high‑speed alternators and may need acoustic mitigation

Typical Vessels: Container shipBulk carrierTankersCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 800 kVA, 400 V/60 Hz auxiliary generator on a vessel where space is limited and an IP23 enclosure is acceptable. Avoid if the ship requires higher ingress protection (e.g., IP55), dual‑frequency operation, or ultra‑low noise/vibration solutions.

Use Cases: Commonly installed as part of a diesel‑generator set to supply hotel loads, emergency power, and auxiliary propulsion support on large commercial vessels. Frequently paired with medium‑speed diesel engines in the main auxiliary plant.

Datasheet

LSA 46.3 800kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (800 kVA) suitable for large hotel and propulsion‑auxiliary loads
Robust Leroy‑Somer brand reputation with long service life in marine environments
Class H insulation permits operation at elevated temperatures, reducing cooling requirements
IP23 enclosure provides basic protection against dust and water spray while allowing easy access for maintenance

Weaknesses

IP23 rating is not splash‑proof; additional shielding may be required in harsh sea conditions
Physical size and weight typical of an 800 kVA generator can limit installation space on smaller vessels
Requires regular brush/commutator inspection if the model is brushed (not confirmed as brushless)
Cooling system must be adequately sized to maintain Class H temperature limits in hot climates

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships >10,000 TEUCruise linersOffshore supply vesselsLarge Ro‑Ro ferries

Decision Guide: Choose if you need a proven 800 kVA auxiliary generator with reliable performance and can accommodate an IP23 enclosure on a vessel with sufficient space for a large alternator. Avoid if the installation requires higher ingress protection (e.g., IP55) or if weight/space constraints are critical.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling equipment, and emergency generators on large commercial vessels; also used in dual‑generator configurations for redundancy on cruise ships and offshore support vessels.

Datasheet

LSA 46.3 800kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High overload capability (typically 110% for up to 30 minutes)
Robust construction with Class H insulation for elevated temperature service
Modular design simplifies installation and routine maintenance
Broad compatibility with medium‑speed diesel prime movers
High efficiency at rated load (~95%)

Weaknesses

Heavy weight and large footprint limit use in space‑constrained installations
Requires forced ventilation due to IP23 enclosure rating
Designed for 60 Hz only, not suitable where dual 50/60 Hz operation is required
Higher upfront cost compared with smaller auxiliary generators

Typical Vessels: TankerContainer ShipBulk CarrierCruise ShipOffshore Supply Vessel

Decision Guide: Choose if you need a reliable 800 kVA main or auxiliary generator on medium‑to‑large vessels, require high overload capability and Class H insulation for harsh environments. Avoid if vessel space/weight constraints are critical, or if the installation must support both 50 Hz and 60 Hz operation.

Use Cases: Commonly installed as a primary auxiliary generator on tankers, container ships and cruise liners to supply shipboard electrical loads; also used as emergency power sources on offshore platforms and for backup power to cargo handling equipment on bulk carriers.

Datasheet

LSA 46.3 800kVA 690V 50Hz unverified

· synchronous marine alternator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency synchronous design with proven Leroy‑Somer reliability
Class H insulation allows operation up to 180 °C, extending service life in harsh marine environments
Compact footprint relative to its 800 kVA rating, facilitating installation in limited engine rooms
Modular construction simplifies routine maintenance and part replacement
Standard 690 V output matches the common shipboard bus voltage, enabling easy integration

Weaknesses

IP23 enclosure provides only basic protection against solid objects; not dust‑tight or water‑resistant for harsh exposure
Relatively heavy cast‑iron construction compared with newer lightweight aluminium designs
Designed exclusively for 50 Hz systems; unsuitable for vessels requiring 60 Hz power
Requires an external forced‑air cooling system, adding auxiliary equipment and complexity
Optimal performance often tied to Leroy‑Somer diesel engines, limiting flexibility with other prime movers

Typical Vessels: Container shipBulk carrierOil tankerLNG carrierCruise shipOffshore supply vessel

Decision Guide: Choose if: you need a robust 800 kVA, 690 V generator for a 50 Hz shipboard power system and value proven synchronous technology with high temperature insulation. Avoid if: the installation demands a higher IP rating, strict weight limits, or operation on a 60 Hz grid.

Use Cases: Commonly installed as part of the main propulsion generator set or as an auxiliary/hotel load generator on large commercial vessels, providing reliable continuous power for navigation, cargo handling equipment, and onboard services. Also used in emergency power arrangements where high reliability is mandatory.

Datasheet

LSA 46.3 800kVA 690V 60Hz unverified

· brushless synchronous generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) suitable for main auxiliary loads on large ships
Robust H‑class insulation allows operation at elevated temperatures
Four‑pole low‑speed design reduces mechanical wear and improves reliability
IP23 enclosure provides basic protection against dust and spray in marine engine rooms
Established Leroy‑Somer brand reputation for durability and service support

Weaknesses

Large physical size and weight require significant installation space
IP23 rating is not fully watertight; additional sealing may be needed in harsh environments
Fixed 690 V output may necessitate step‑up/down transformers for some shipboard systems
Higher initial capital cost compared with smaller or lower‑rated generators
Maintenance of the brushless exciter system still required at scheduled intervals

Typical Vessels: Crude Oil TankerBulk CarrierContainer ShipCruise ShipOffshore Supply VesselLNG/LPG Carrier

Decision Guide: Choose if you need a proven, high‑capacity auxiliary generator for large vessels with ample engine‑room space and can accommodate an IP23 enclosure. Avoid if vessel size is constrained, higher IP protection is required, or the electrical system demands a different voltage level.

Use Cases: Commonly installed as a main auxiliary generator on tankers, bulk carriers and cruise ships to supply hotel loads, cargo handling equipment, and emergency power; also used in offshore platforms where continuous high‑power output is critical.

Datasheet

LSA 46.3 900kVA 400V 50Hz unverified

· brushless synchronous generator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 900 kVA suitable for large auxiliary power demands
Class‑H insulation allows operation at elevated temperatures, enhancing reliability
IP23 enclosure provides basic protection against dust and water spray while keeping the unit compact
Four‑pole design yields a synchronous speed of 1500 rpm at 50 Hz, matching standard marine prime movers
Proven Leroy‑Somer brand reputation for durability in harsh marine environments

Weaknesses

IP23 rating is not fully sealed; additional protection may be required in very wet or corrosive spaces
Requires an external cooling system (air or water) which adds to installation complexity
Limited to 50 Hz operation, making it unsuitable for vessels that standardise on 60 Hz systems
Physical size and weight are typical of high‑power alternators, potentially constraining placement in tight engine rooms

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Decision Guide: Choose the LSA 46.3 when you need a reliable 900 kVA, 400 V auxiliary generator for 50 Hz fleets and can accommodate its cooling and enclosure requirements. Avoid it if your vessel operates on 60 Hz, demands a fully sealed (IP55+) unit, or has severe space/weight constraints that preclude a standard‑size marine alternator.

Use Cases: Typically installed as part of the main auxiliary power plant on large merchant vessels, providing hotel load, cargo handling equipment power and emergency generation. Also used on cruise ships for extensive hotel services and on offshore support vessels where high‑capacity, low‑maintenance generators are required.

Datasheet

LSA 46.3 900kVA 400V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 900 kVA in a single unit meets the needs of large auxiliaries or main generators on medium‑size ships.
Insulation class H provides excellent thermal endurance and reliability under continuous load.
Four‑pole design gives stable voltage regulation at 60 Hz, suitable for US‑flagged vessels.
Proven Leroy‑Somer brand reputation for durability and low maintenance in marine environments.

Weaknesses

IP23 enclosure offers only limited protection against water ingress; additional shielding or ventilation may be required in harsh sea conditions.
Designed exclusively for 60 Hz operation – not suitable for vessels standardized on 50 Hz systems.
Physical size and weight are considerable, requiring adequate space and structural support in the engine room.
Requires a dedicated brushless exciter system and associated control gear, adding to installation complexity.

Typical Vessels: Tankers (US‑flagged)Container shipsCruise linersOffshore supply vesselsNaval auxiliaries

Decision Guide: Choose if you need a robust 900 kVA generator for a 60 Hz US‑type vessel, value Leroy‑Somer’s service network, and can accommodate the IP23 enclosure with proper ventilation. Avoid if your ship operates on a 50 Hz system, requires higher ingress protection (e.g., IP55), or has severe space/weight constraints.

Use Cases: Typically installed as the main auxiliary generator on medium‑size tankers and container ships, or as a primary propulsion generator on cruise vessels where 60 Hz power is required. Also used in offshore platform power plants where high thermal endurance and reliable voltage regulation are critical.

Datasheet

LSA 46.3 900kVA 440V 50Hz unverified

· shaft‑driven marine alternator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (900 kVA) in a compact footprint for 50 Hz systems
Class H insulation allows operation in high ambient temperature zones
Proven Leroy‑Somer reliability with long service intervals
Modular construction simplifies installation and on‑board maintenance
IP23 enclosure provides splash protection suitable for typical engine rooms

Weaknesses

IP23 rating does not protect against dust or heavy water ingress; unsuitable for harsh external locations
Fixed 4‑pole design limits use to constant‑speed applications (no variable‑speed capability)
Physical size and weight may restrict placement in vessels with tight engine‑room space
Requires an external cooling system, adding to installation complexity
Higher upfront cost compared with generic off‑the‑shelf alternators

Typical Vessels: Container shipCruise linerLNG carrierOil tankerBulk carrierOffshore supply vessel

Decision Guide: Choose if: you need a reliable 900 kVA, 50 Hz generator for large merchant or cruise vessels operating in warm climates and have space for an IP23‑rated alternator. Avoid if: the installation requires higher ingress protection (e.g., IP55), variable‑speed operation, or a lower‑cost solution with reduced performance margins.

Use Cases: Typically installed as a main auxiliary generator supplying hotel load, cargo handling equipment, and emergency power on large ocean‑going ships; also used in offshore platform support vessels where high continuous output and temperature resilience are critical.

Datasheet

LSA 46.3 900kVA 440V 60Hz unverified

· marine synchronous generator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven marine‑grade design with extensive service history in commercial shipping
Integrated automatic voltage regulator and protection relays for plug‑and‑play installation
High thermal class (H) insulation allows operation at elevated temperatures
Compact footprint relative to its 900 kVA rating, easing space planning on large vessels

Weaknesses

IP23 enclosure provides limited protection against water spray; additional shielding may be required in wet locations
Only a 60 Hz version is offered, requiring frequency conversion for vessels standardized on 50 Hz
Physical size and weight are substantial, making it unsuitable for small craft or tight engine‑room spaces
Initial capital cost is higher than generic industrial generators of similar rating

Typical Vessels: Container shipBulk carrierCrude oil tankerProduct tankerCruise linerOffshore supply vessel

Certifications: IMO D‑2DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a reliable 900 kVA auxiliary power source on a large, 60 Hz‑operated vessel and value integrated control/protection features. Avoid if the installation space is limited, the ship operates on 50 Hz, or only a higher IP rating is acceptable without extra shielding.

Use Cases: Typically installed as a main auxiliary generator for hotel load, cargo handling equipment, and emergency power on ocean‑going merchant ships; also used in cruise vessels to support extensive electrical loads and redundancy schemes.

Datasheet

LSA 46.3 900kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (typically >94%) resulting in lower fuel consumption for the prime mover.
Robust cast‑iron frame and class H insulation provide long service life under harsh marine conditions.
Modular design allows easy on‑site assembly, alignment and maintenance.
Integrated forced‑air cooling system meets IP23 requirements while keeping operating temperature within limits.
Proven overload capability (up to 110% for 30 min) suitable for peak power demands.

Weaknesses

Large physical size and weight require substantial engine room space and handling equipment.
IP23 enclosure is not fully sealed; additional protection may be needed in highly corrosive or wet environments.
Fixed 690 V output may necessitate step‑up/step‑down transformers for vessels using different voltage standards.
Initial capital cost is higher than smaller, lower‑rated generators.

Typical Vessels: TankerContainer ShipBulk CarrierCruise ShipOffshore Supply Vessel

Certifications: DNV GL

Decision Guide: Choose if: you need a reliable 900 kVA source for main propulsion or hotel power on medium‑to‑large vessels, value high efficiency and proven durability, and have sufficient engine‑room space. Avoid if: the installation area is constrained, you require a fully sealed (IP66+) unit for extreme environments, or the vessel operates on a different standard voltage that would add costly conversion equipment.

Use Cases: Typically installed as part of a diesel‑generator set on ocean‑going cargo carriers and cruise liners to supply both propulsion auxiliaries and hotel loads. Frequently paired with medium‑speed diesel engines in dual‑fuel configurations, providing redundancy for critical shipboard power systems.

Datasheet

LSA 46.3 900kVA 690V 60Hz unverified

· air-cooled marine alternator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 900 kVA in a compact footprint
Class H insulation allows operation at elevated temperatures
Robust IP23 enclosure suitable for typical shipboard environments
Proven Leroy‑Somer reliability and long service life
Standard 690 V output matches common marine distribution systems

Weaknesses

IP23 rating offers limited protection against dust and water ingress in harsh climates
Requires forced ventilation and may need additional cooling water provisions
Fixed 690 V output may require transformers for vessels using higher bus voltages
Noise level can be higher than low‑speed, water‑cooled generators

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore support vessels

Decision Guide: Choose if: you need a compact, high‑power generator set with proven reliability for standard 690 V shipboard distribution and can accommodate an IP23 enclosure. Avoid if: the vessel requires higher voltage busbars, stricter ingress protection (e.g., IP54+), or ultra‑quiet operation.

Use Cases: Commonly installed as a main or auxiliary generator on large merchant vessels to supply propulsion auxiliaries, hotel loads, and emergency power; also used in offshore platforms where space and weight are at a premium.

Datasheet

LSA 46.3 1000kVA 400V 50Hz unverified

· high-speed marine alternator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 1 MVA in a relatively compact frame
H‑class insulation provides robust thermal endurance
Stable 50 Hz output at 1500 rpm thanks to the 4‑pole design
IP23 enclosure suitable for indoor engine rooms with adequate ventilation
Standard 400 V three‑phase output matches common marine distribution systems

Weaknesses

Open frame (IP23) requires good ventilation; not suited for harsh external environments
Fixed 400 V rating limits use where higher voltage is required without additional transformers
No built‑in cooling system – relies on external air or water cooling circuits
Physical size and weight are relatively large compared with low‑speed generators of the same power
Only rated for 50 Hz operation, unsuitable for vessels that require 60 Hz

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierRo‑Ro ferry

Decision Guide: Choose if you need a proven 1 MVA, 400 V/50 Hz generator with compact dimensions for indoor engine‑room installation and value Leroy‑Somer reliability. Avoid if the installation demands higher voltage, IP66 protection, built‑in cooling, or operation at 60 Hz.

Use Cases: Commonly installed as the main auxiliary generator on large commercial vessels, providing shipboard power for propulsion auxiliaries, hotel loads, cargo handling equipment, and emergency supply where a stable 400 V three‑phase network is required.

Datasheet

LSA 46.3 1000kVA 400V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and high power density suitable for vessels with limited engine room space
Class H insulation permits operation at elevated temperatures, enhancing reliability in hot climates
Proven Leroy‑Somer brand reputation for durability and ease of maintenance
Standard 400 V/60 Hz output matches most US‑type shipboard electrical systems

Weaknesses

IP23 enclosure only protects against solid objects >12.5 mm and water spray; additional protection may be required in harsh marine environments
High rotational speed demands precise engine speed control, increasing wear on the prime mover compared with low‑speed generators
Noise and vibration levels are higher than those of low‑speed, large‑diameter alternators
Limited to 60 Hz operation; not directly compatible with vessels standardized on 50 Hz

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary

Decision Guide: Choose if you need a compact, high‑power auxiliary generator for a 400 V/60 Hz system and have space constraints. Avoid if the installation environment requires a higher IP rating or if fuel efficiency at low engine speeds is a primary concern.

Use Cases: Commonly installed as the main hotel‑load generator on large commercial vessels, providing emergency power and supporting dynamic positioning systems; also used in diesel‑electric propulsion arrangements where a high‑speed alternator drives an electric motor.

Datasheet

LSA 46.3 1000kVA 440V 50Hz unverified

· high-speed marine alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1000 kVA in a relatively compact footprint
Class H insulation allows operation at elevated temperatures
Proven Leroy‑Somer reliability with extensive service history on large vessels
Standard 440 V, 50 Hz output matches most shipboard electrical systems
4‑pole design provides stable frequency and lower vibration

Weaknesses

IP23 enclosure offers limited protection against water ingress; additional shielding may be required in harsh marine environments
High rotational speed can increase bearing wear compared with low‑speed generators
Designed for 50 Hz markets only – not directly compatible with 60 Hz installations without rewinding
Requires precise maintenance of cooling and lubrication systems to sustain performance

Typical Vessels: Cruise shipsContainer vesselsTankersOffshore supply vesselsNaval auxiliary ships

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for 50 Hz shipboard power and value Leroy‑Somer’s long‑track record. Avoid if the installation demands higher ingress protection (IP≥54) or must operate on a 60 Hz system without modification.

Use Cases: Commonly installed as part of diesel‑generator sets for main auxiliary power, emergency generators, and shore‑power conversion units on large commercial and naval vessels where space is at a premium.

Datasheet

LSA 46.3 1000kVA 440V 60Hz unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1 MVA) suitable for large vessel hotel loads or propulsion auxiliaries
H‑class insulation allows operation at elevated temperatures, improving reliability in harsh marine environments
Proven Leroy‑Somer design with a long service history and low maintenance requirements
Modular construction simplifies installation and future upgrades
IP23 rating provides adequate protection for deck‑mounted installations while allowing easy access for inspection

Weaknesses

Relatively large footprint and weight compared with smaller auxiliary units, impacting space‑critical vessels
IP23 enclosure is not fully sealed; additional ventilation or protective measures are needed in harsh weather conditions
Designed for 60 Hz operation only, limiting suitability for vessels standardized on 50 Hz power systems
Higher initial capital cost than lower‑rated generators from some competitors
Requires external cooling system (forced air or water) to maintain temperature limits

Typical Vessels: Cruise shipsContainer vesselsBulk carriersOffshore supply vesselsNaval auxiliary shipsLNG/LPG carriers

Decision Guide: Choose if: you need a reliable 1 MVA generator with robust temperature tolerance for large‑scale hotel or propulsion‑auxiliary power on a vessel that operates on 60 Hz and can accommodate an IP23 deck‑mounted unit. Avoid if: space, weight, or strict enclosure protection (IP66) are critical, or the ship’s electrical system is standardized on 50 Hz.

Use Cases: Typically installed as part of the main auxiliary power plant on large commercial ships to supply hotel loads, cargo handling equipment, and propulsion auxiliaries; also used in offshore support vessels where high, continuous power is required for dynamic positioning and deck machinery.

Datasheet

LSA 46.3 1000kVA 690V 50Hz unverified

· marine synchronous alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) in a compact footprint suitable for large vessels
Class H insulation allows operation at elevated temperatures, improving reliability in harsh marine environments
Proven Leroy‑Somer design with extensive service history on commercial ships
Standard 690 V, 50 Hz output matches most shipboard electrical systems without need for frequency conversion
Modular construction facilitates installation and maintenance

Weaknesses

IP23 enclosure provides limited protection against dust and water ingress compared to higher IP ratings
Fixed 4‑pole design ties the machine to a specific shaft speed (typically 1500 rpm at 50 Hz)
Requires external cooling system for continuous full‑load operation
Voltage rating of 690 V may necessitate step‑up transformers for vessels requiring higher distribution voltages

Typical Vessels: Container shipTankerBulk carrierCruise shipOffshore supply vessel

Decision Guide: Choose if: you need a reliable 1000 kVA generator for 690 V/50 Hz systems, value high thermal capability (Class H) and proven Leroy‑Somer reliability, and can accommodate an IP23 enclosure. Avoid if: the vessel requires higher voltage distribution without transformers, demands a higher ingress protection rating, or operates at speeds incompatible with a fixed 4‑pole design.

Use Cases: Typically installed as a main auxiliary generator on large commercial vessels to supply shipboard electrical loads and emergency power; also used in cruise ships and offshore support vessels where robust, high‑capacity generation is required.

Datasheet

LSA 46.3 1000kVA 690V 60Hz unverified

· brushless synchronous generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1000 kVA in a compact footprint compared with older generators of similar rating.
Robust construction with Class H insulation, allowing operation in harsh marine temperature environments.
Standard 690 V three‑phase output matches most shipboard distribution systems, simplifying integration.
Four‑pole design provides good voltage regulation and low harmonic distortion.
Proven Leroy‑Somer brand reputation for reliability and long service life.

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for exposed deck installations without additional shielding.
Brushless design still requires an external exciter unit, adding to system complexity and space requirements.
Relatively heavy compared with newer permanent‑magnet machines of similar output.
Operates only at 60 Hz, limiting use on vessels standardized on 50 Hz systems.
Noise and vibration levels are higher than low‑speed, large‑diameter generators.

Typical Vessels: Container shipCruise linerBulk carrierTankerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑power (≈1 MW) generator that fits standard 690 V/60 Hz shipboard distribution, value Leroy‑Somer reliability, and can accommodate an external exciter. Avoid if the installation requires a higher IP rating, low‑noise operation, or a 50 Hz system, or if weight and space are at a premium.

Use Cases: Typically installed as main service generators on large commercial vessels, providing propulsion auxiliary power, hotel loads, cargo handling equipment, and emergency power. Also used in offshore platforms where compact high‑output generators are required.

Datasheet

LSA 47.3 1000kVA 400V 50Hz unverified

· brushless marine alternator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1 MVA) in a compact footprint for its class
Class‑H insulation allows operation up to 180 °C, enhancing thermal robustness
Standard 400 V/50 Hz rating matches most international shipboard electrical systems
Proven Leroy‑Somer brand reputation for reliability and long service life
IP23 enclosure provides protection against solid objects and limited water spray

Weaknesses

IP23 rating is not fully watertight; additional sealing may be required in harsh marine environments
Large physical size and weight compared with newer lightweight generator sets (exact figures unavailable)
Requires regular maintenance of brush‑type exciter if not a fully brushless version
Limited to 50 Hz operation – unsuitable for vessels requiring 60 Hz systems

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven 1 MVA, 400 V/50 Hz generator for large vessels and can accommodate an IP23 enclosure. Avoid if: the installation demands higher ingress protection (e.g., IP55), lighter weight, or 60 Hz operation.

Use Cases: Commonly installed as the main propulsion generator on tankers and container ships, or as a high‑capacity auxiliary generator for hotel loads on cruise vessels and offshore support ships.

Datasheet

LSA 47.3 1000kVA 400V 60Hz unverified

· four-pole synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

1 MW output suitable for large auxiliary power demands
Insulation class H provides temperature margin and extended life
Direct‑coupled design at 1800 rpm eliminates need for reduction gear
Proven Leroy‑Somer reliability with extensive service network

Weaknesses

IP23 enclosure offers limited protection; may require additional housing in harsh environments
Not low‑speed; unsuitable for direct coupling to very slow‑speed main engines without gearbox
Single‑unit design lacks built‑in redundancy, so failure impacts power availability
400 V output may need conversion for vessels standardized on other voltages

Typical Vessels: Container ShipBulk CarrierTankerCruise ShipOffshore Supply Vessel

Decision Guide: Choose if you need a single 1 MW auxiliary generator with high temperature capability, have space for an IP23 unit and can accommodate direct coupling to a 1800 rpm engine. Avoid if the installation requires higher ingress protection (e.g., IP55), low‑speed coupling, or built‑in redundancy.

Use Cases: Main auxiliary power plant supplying hotel loads, cargo handling equipment, and emergency power on medium‑size commercial vessels; also used as a dedicated generator for propulsion auxiliaries on ships with diesel‑electric configurations.

Datasheet

LSA 47.3 1000kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MVA) in a compact frame suitable for main‑auxiliary applications
H‑class insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Proven Leroy‑Somer design with long service history and easy access to spare parts
IP23 enclosure provides splash protection while keeping the unit relatively lightweight for its rating
Four‑pole construction matches 1500 rpm diesel engines directly, eliminating need for gear reduction

Weaknesses

IP23 rating offers only limited dust protection; not suitable for harsh dusty environments without additional shielding
Physical size and weight can be a constraint on vessels with tight engine‑room space
Requires external excitation system (separate exciter), adding to installation complexity
Fixed 440 V output may need step‑up transformers for ships standardising on higher voltages (e.g., 660 V)
Cooling relies on adequate seawater flow; fouling can reduce performance if not maintained

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if you need a reliable 1 MVA synchronous generator with proven marine service, can accommodate its size and IP23 rating, and have an external exciter available. Avoid if space is extremely limited, higher voltage output is required without transformers, or the installation environment demands a higher ingress protection level.

Use Cases: Commonly installed as main‑auxiliary generators on large merchant vessels to supply hotel loads, emergency power, and propulsion auxiliaries; also used in offshore platforms where robust, high‑temperature capable alternators are essential.

Datasheet

LSA 47.3 1000kVA 440V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1 000 kVA in a relatively small footprint for engine‑room installation
Class H insulation allows operation up to 180 °C, enhancing thermal robustness
Four‑pole design provides low vibration and smoother output waveform
Standard 440 V/60 Hz rating matches most US‑type marine power systems
Proven Leroy‑Somer reliability with a long service history in offshore vessels

Weaknesses

IP23 open enclosure offers limited protection against water spray; not suitable for exposed deck installations
Requires external cooling and regular maintenance of brushes/commutator
Fixed 60 Hz frequency – not directly compatible with vessels standardized on 50 Hz
Weight and mounting dimensions can be substantial compared with newer lightweight permanent‑magnet units
No built‑in redundancy; a separate emergency generator is still required

Typical Vessels: Offshore Supply Vessel (OSV)Platform Support VesselSmall Cruise ShipFerryNaval auxiliary / support ship

Decision Guide: Choose if you need a compact, high‑output generator for a 440 V/60 Hz US‑type power system and can accommodate an IP23 enclosure with routine maintenance. Avoid if the installation demands higher splash protection (IP65+), operates on 50 Hz, or requires a fully sealed, low‑maintenance solution.

Use Cases: Typically installed as the main service generator on offshore support vessels to supply shipboard electricity, auxiliary loads and sometimes propulsion assist; also used as a standby/emergency power source where rapid start‑up is required.

Datasheet

LSA 47.3 1000kVA 690V 50Hz unverified

· synchronous marine alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1 MVA suitable for main auxiliary power needs
H‑class insulation allows operation at elevated temperatures with improved reliability
IP23 enclosure provides protection against dust and limited water ingress, meeting typical shipboard conditions
Four‑pole design ensures stable frequency and low vibration levels
Leroy‑Somer’s modular construction simplifies installation and routine maintenance

Weaknesses

Enclosure is only IP23; not fully sealed against heavy spray or immersion, limiting use in harsh wet zones
Physical size and weight are substantial, requiring dedicated space in the machinery room
Single‑frequency (50 Hz) design may be unsuitable for vessels that need 60 Hz compatibility without a frequency converter
External cooling system is required, adding to installation complexity
Capital cost is higher than some lower‑rated or generic generator sets

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a proven, high‑power (1 MVA) auxiliary generator with robust temperature tolerance for large commercial or offshore vessels and have space for an IP23‑rated unit. Avoid if the vessel requires fully sealed (IP55+) equipment, dual‑frequency capability, or a more compact solution for limited machinery‑room volume.

Use Cases: Commonly installed as the main auxiliary generator on tankers, container ships and bulk carriers to supply shipboard electricity, as well as in cruise ships and offshore platforms for hotel loads and emergency power where reliable, high‑capacity generation is critical.

Datasheet

LSA 47.3 1000kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output of 1000 kVA in a single unit
H‑class insulation allows operation up to 180 °C ambient temperature
IP23 enclosure provides protection against splashing water and solid objects larger than 12.5 mm, suitable for typical shipboard environments
Four‑pole design matches standard 690 V/60 Hz diesel engine speeds (1800 rpm)
Leroy‑Somer’s modular construction simplifies maintenance and reduces downtime

Weaknesses

Relatively heavy and bulky compared with newer compact generator sets (exact weight not specified)
IP23 rating does not protect against fine dust or full immersion
Limited to 60 Hz operation, unsuitable for vessels standardized on 50 Hz power systems
Relies on forced‑air cooling; may be less effective in very high ambient temperatures
Requires external transformers if voltage levels other than 690 V are needed

Typical Vessels: Container ShipCruise LinerBulk CarrierOffshore Supply VesselNaval Auxiliary

Certifications: IMO D-2

Decision Guide: Choose if you need a proven 1000 kVA synchronous alternator for a 690 V/60 Hz shipboard power system, value high temperature insulation and modular maintenance, and operate in environments where IP23 protection is sufficient. Avoid if your vessel uses a 50 Hz electrical network, requires higher ingress protection (e.g., IP54), has strict weight or space constraints, or needs an integrated cooling solution.

Use Cases: Typically installed as the main auxiliary generator on large merchant vessels and cruise ships, providing hotel power, cargo‑handling equipment, and emergency supply; also used in offshore platforms where a robust 690 V distribution system is required.

Datasheet

LSA 47.3 1250kVA 400V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) in a compact footprint for large vessels
Brushless design reduces maintenance and improves reliability
Class H insulation tolerates high operating temperatures
IP23 enclosure protects against solid foreign objects, suitable for typical engine‑room conditions
Standard 400 V/50 Hz output matches most shipboard electrical systems

Weaknesses

IP23 rating offers limited protection against water ingress; extra sealing may be required in very wet environments
Physical size and weight can be restrictive on smaller vessels or retrofits
Single‑frequency (50 Hz) only – not suitable for ships requiring dual‑frequency capability
Requires an external cooling system (air‑forced or water‑cooled), adding to installation complexity
Higher upfront cost compared with lower‑rated generators

Typical Vessels: Container shipCruise linerBulk carrierOffshore supply vesselLNG carrierNaval auxiliary

Decision Guide: Choose if: you need a reliable 1250 kVA source for 400 V/50 Hz shipboard distribution, prefer low‑maintenance brushless technology, and operate in standard engine‑room conditions. Avoid if: the vessel requires higher ingress protection (IP≥44), dual‑frequency output, or has severe space/weight constraints.

Use Cases: Typically installed as a main auxiliary generator on large merchant vessels to supply propulsion‑related loads, hotel services on cruise ships, and emergency power on offshore platforms where high reliability and temperature tolerance are critical.

Datasheet

LSA 47.3 1250kVA 400V 60Hz unverified

· synchronous alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1250 kVA) suitable for large vessels' auxiliary loads
Class‑H insulation allows operation at elevated temperatures, enhancing reliability in engine rooms
Four‑pole design provides stable 60 Hz frequency with low vibration
Leroy‑Somer reputation for robust mechanical construction and long service life

Weaknesses

IP23 enclosure offers only splash protection; additional sealing may be required in harsh environments
Large physical size and weight can limit installation flexibility on smaller ships
No integrated control or governor system – requires separate auxiliary equipment

Typical Vessels: TankersContainer shipsCruise linersOffshore supply vesselsBulk carriers

Decision Guide: Choose if you need a proven, high‑capacity auxiliary generator for a vessel that can accommodate an IP23 enclosure and has space for a large synchronous alternator. Avoid if the installation requires higher ingress protection (e.g., IP55), tighter weight/space constraints, or an all‑in‑one generator set with built‑in control electronics.

Use Cases: Commonly installed as the main auxiliary power source on large merchant vessels and offshore platforms, providing continuous shipboard electricity and serving as emergency backup generation when shore power is unavailable.

Datasheet

LSA 47.3 1250kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1250 kVA suitable for large auxiliary power sets
Class H insulation allows operation at elevated temperatures
Standard 440 V/50 Hz rating matches most marine diesel engines in Europe and Asia
Proven Leroy‑Somer reliability and worldwide service network
Modular construction simplifies installation and routine maintenance

Weaknesses

IP23 enclosure provides only splash protection; not dust‑tight or fully watertight
Designed for 50 Hz operation only, limiting use in 60 Hz markets
Physical size and weight are typical of high‑power units, requiring ample engine‑room space
Voltage rating fixed at 440 V, may need step‑up/down transformers for other shipboard voltages

Typical Vessels: Container shipBulk carrierTankerCruise linerRo‑Ro vessel

Certifications: ABSDNV

Decision Guide: Choose if you need a robust 1250 kVA auxiliary generator for a 50 Hz, 440 V system on a large merchant vessel and have sufficient engine‑room space. Avoid if the installation requires higher IP protection, operation at 60 Hz, or a more compact unit.

Use Cases: Commonly installed as part of the main auxiliary power plant on container ships, tankers and cruise vessels to supply hotel loads, cargo handling equipment, and emergency power; also used in dedicated generator sets for offshore platforms where high‑power, reliable output is critical.

Datasheet

LSA 47.3 1250kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (1250 kVA) suitable for large vessel service loads
Robust Class H insulation permits operation in elevated temperature environments
Compact modular construction eases installation in confined engine rooms
IP23 enclosure provides protection against splashing water and limited dust ingress
Extensive global spare‑parts support from Leroy‑Somer/Nidec

Weaknesses

IP23 rating does not protect against full dust or heavy spray exposure; additional shielding may be required in harsh conditions
60 Hz design limits applicability on vessels standardized to 50 Hz without frequency conversion equipment
Large power rating results in higher initial cost and greater weight compared with lower‑rated generators
Requires an external cooling system (air or oil), adding installation complexity
Four‑pole configuration may offer less rotational inertia for smoothing rapid load fluctuations

Typical Vessels: Cruise shipContainer vesselBulk carrierOffshore support vesselLNG carrier

Decision Guide: Choose if you need a high‑capacity, 60 Hz generator for large commercial vessels with standard marine switchboards and can accommodate an IP23 enclosure. Avoid if the vessel operates on 50 Hz systems, requires full dust‑tight protection, or has strict weight/space constraints that favor smaller units.

Use Cases: The LSA 47.3 is commonly installed as the main auxiliary generator on large passenger ships, container carriers and offshore support vessels, providing shipboard electricity for propulsion auxiliaries, hotel loads, cargo handling equipment and emergency power supply.

Datasheet

LSA 47.3 1250kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 1250 kVA in a single unit, reducing the number of generators needed.
Robust construction with Class H insulation, suitable for continuous operation at elevated temperatures.
Proven reliability from Leroy‑Somer’s long track record in marine propulsion and auxiliary power systems.
Standard shipboard voltage (690 V) and 4‑pole design simplify integration with existing electrical distribution networks.
IP23 enclosure provides adequate protection against dust and limited splashing while allowing easy access for maintenance.

Weaknesses

Enclosure rating IP23 is not fully splash‑proof; additional shielding may be required in heavy spray environments.
Physical size and weight are substantial, potentially limiting installation space on smaller vessels.
Fixed 50 Hz output – not suitable for vessels that operate on 60 Hz systems without a frequency converter.
External cooling system is required, adding complexity to the installation.
Higher upfront capital cost compared with lower‑rated generators from some competitors.

Typical Vessels: Container shipBulk carrierCruise linerLNG carrierOffshore support vessel

Certifications: IMO D-2DNVABS

Decision Guide: Choose if you need a single, high‑capacity generator that meets IMO D‑2 and major classification society standards for large commercial vessels operating at 690 V/50 Hz. Avoid if vessel space is limited, the environment demands higher ingress protection than IP23, or the ship’s electrical system uses a different frequency or voltage.

Use Cases: Typically installed as the main auxiliary generator on large cargo and passenger ships to supply propulsion‑related hotel loads, as well as an emergency power source on offshore platforms where continuous high‑power output is critical.

Datasheet

LSA 47.3 1250kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1250 kVA) suitable for large vessel auxiliaries
Class H insulation allows operation in high‑temperature environments
Modular construction simplifies installation and maintenance on board
Broad compatibility with diesel, gas or hybrid prime movers
Proven track record in cruise ships and offshore vessels

Weaknesses

IP23 rating offers limited protection against water ingress; additional sealing may be required for harsh marine climates
Designed for 60 Hz only, unsuitable for vessels operating on 50 Hz power systems
Physical size and weight demand ample engine‑room space
Noise and vibration levels may need extra mitigation measures in passenger ships
Higher upfront cost compared with lower‑rated alternators

Typical Vessels: Cruise shipContainer vesselBulk carrierLNG carrierOffshore supply vesselNaval auxiliary ship

Certifications: DNVABSLR

Decision Guide: Choose if you need a robust, high‑power 690 V 60 Hz alternator with class H insulation for large commercial or offshore vessels and have sufficient space for its size. Avoid if the vessel operates on 50 Hz systems, requires a higher IP rating for severe spray conditions, or has strict weight/space constraints.

Use Cases: Typically installed as part of auxiliary generator sets on cruise liners, tankers and container ships to supply hotel loads, cargo refrigeration, and emergency power. Also used in offshore platforms and naval support vessels where reliable high‑capacity electricity is critical.

Datasheet

LSA 47.3 1500kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and proven reliability from a reputable OEM
Class‑H insulation tolerates elevated operating temperatures
Standard 400 V/50 Hz output matches most shipboard distribution systems
Compact IP23 enclosure suitable for engine‑room installation
Global after‑sales support and spare‑parts network

Weaknesses

Physical size and weight are substantial compared with lower‑rated units
IP23 provides limited protection against dust and water ingress
Designed for 50 Hz; not directly compatible with 60 Hz regions without a frequency converter
Higher upfront cost than many low‑cost alternatives

Typical Vessels: Container shipCruise linerLNG carrierOffshore supply vesselNaval auxiliary

Certifications: IMO D-2 (Type Approval)

Decision Guide: Choose if you need a high‑power, reliable service generator for 400 V/50 Hz systems on large vessels and value OEM support. Avoid if the vessel operates on 60 Hz, has strict weight/space constraints, or budget overrides brand reputation.

Use Cases: Main ship‑service generator on large merchant ships, emergency power backup on cruise liners, hotel‑load generation for offshore platforms, and auxiliary power for naval support vessels.

Datasheet

LSA 47.3 1500kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) suitable for large ship service loads
Class H insulation allows operation at elevated temperatures
Standard 400 V three‑phase interface simplifies integration with existing shipboard distribution
Proven Leroy‑Somer reputation for reliability and long service life
Open IP23 enclosure eases maintenance access in engine rooms

Weaknesses

Open IP23 housing requires adequate ventilation and may be unsuitable for harsh, wet environments
Heavy construction increases overall weight compared with more compact sealed units
No built‑in control or governor; external drive system required
Designed for 60 Hz only – not directly compatible with vessels standardized on 50 Hz
Limited redundancy options without additional parallel units

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a robust, high‑capacity 1500 kVA generator for a 400 V/60 Hz system and have space for an open‑type enclosure with adequate ventilation. Avoid if the installation requires a sealed (IP66+) unit, operates on 50 Hz, or has strict weight constraints.

Use Cases: Commonly installed as a main auxiliary power source on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency systems; also used in offshore platforms where high‑temperature operation is expected.

Datasheet

LSA 47.3 1500kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) in a single unit reduces the number of generator sets required.
Class H insulation permits continuous operation at elevated temperatures, enhancing reliability in hot climates.
IP23 enclosure provides splash protection suitable for typical shipboard environments while allowing easy access for maintenance.
Proven Leroy‑Somer design known for low maintenance and long service intervals.
Standard 440 V/50 Hz output matches most existing marine distribution systems.

Weaknesses

IP23 rating offers only splash protection; not dust‑tight or fully sealed against harsh weather.
Designed solely for 50 Hz operation, limiting use on vessels that require dual‑frequency capability.
Physical size and weight are relatively large compared with newer compact generator technologies.
Requires an external cooling system or dedicated ventilation to manage heat dissipation.
May need additional sound attenuation measures for noise‑sensitive installations.

Typical Vessels: Cruise shipContainer vesselBulk carrierTankerLNG carrierOffshore supply vessel

Decision Guide: Choose if: you need a reliable 1500 kVA, 50 Hz generator with robust high‑temperature insulation for large commercial vessels and standard 440 V distribution. Avoid if: the installation requires dual‑frequency capability, higher IP protection (e.g., dust‑tight), or space/weight constraints that favor more compact units.

Use Cases: Typically installed as a main‑engine driven generator set on large merchant ships to supply propulsion auxiliary power and hotel loads, or as an emergency generator for critical systems on cruise liners and offshore vessels.

Datasheet

LSA 47.3 1500kVA 440V 60Hz unverified

· high‑speed synchronous marine generator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Large continuous power output (1500 kVA) suitable for main or auxiliary generation on large vessels
Class H insulation allows operation at elevated temperatures, improving reliability in hot climates
IP23 enclosure provides protection against splashing water and dust while allowing easy access for maintenance
Four‑pole design yields a relatively low rotational speed, reducing mechanical stress and extending bearing life
Proven Leroy‑Somer brand reputation for durability and long service intervals

Weaknesses

Physical size and weight are substantial; may be unsuitable for vessels with tight engine‑room constraints
Fixed 60 Hz frequency limits use on ships that require variable‑frequency drives or 50 Hz operation without additional conversion equipment
IP23 rating does not protect against direct water ingress, so extra sealing is needed in very wet compartments
Higher initial capital cost compared with smaller, lower‑rated generators from competing manufacturers

Typical Vessels: Crude oil tankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Certifications: IMO Type Approval

Decision Guide: Choose if: you need a reliable, high‑capacity generator for main power or heavy auxiliary loads on large ocean‑going ships and can accommodate its footprint. Avoid if: space is limited, you require variable frequency output, or the installation environment demands higher ingress protection than IP23.

Use Cases: Commonly installed as part of the primary generation set on long‑haul tankers and container vessels, providing shipboard electricity for propulsion auxiliaries, hotel services, and cargo handling equipment. Also used on cruise ships and offshore supply vessels where high thermal tolerance and robust construction are essential.

Datasheet

LSA 47.3 1500kVA 690V 50Hz unverified

· 4-pole marine alternator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) suitable for large vessel service loads
Class‑H insulation allows operation at elevated temperatures, enhancing reliability
Robust 4‑pole design provides stable 50 Hz voltage with low harmonic distortion
IP23 enclosure offers protection against dust and water spray while allowing easy access for maintenance
Proven track record in major fleets; compatible with standard marine diesel engine drives

Weaknesses

IP23 rating is not fully watertight; additional sealing may be required in harsh wet environments
Large physical size and weight increase installation space and handling requirements
Requires a dedicated cooling water system to maintain temperature limits
Fixed 690 V output may need step‑down transformers for vessels using lower distribution voltages
Efficiency drops at low part‑load operation, potentially increasing fuel consumption when used as an emergency generator

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a high‑capacity (≥1500 kVA) generator for main service or propulsion auxiliary on large vessels, and you can accommodate the IP23 enclosure with appropriate ventilation. Avoid if: space is limited, a higher ingress protection rating is required, or the vessel operates primarily at low loads where efficiency becomes critical.

Use Cases: The LSA 47.3 is typically installed as part of a main generator set on large tankers and container ships for propulsion‑auxiliary power, as well as in cruise ships for hotel load support and in offshore supply vessels where robust, high‑power generation is essential.

Datasheet

LSA 47.3 1500kVA 690V 60Hz unverified

· brushless marine alternator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) in a single unit reduces the number of generators needed on large vessels
Class‑H insulation permits operation at elevated temperatures, improving reliability in hot engine rooms
Brushless design lowers maintenance intervals and eliminates brush wear issues
Four‑pole construction provides 1500 rpm operation at 60 Hz, matching standard marine drive speeds
IP23 rating offers protection against dust and water spray while keeping the unit compact

Weaknesses

Physical size and weight are substantial; installation may require significant space and structural support
IP23 enclosure is not fully watertight (e.g., not suitable for heavy spray zones without additional shielding)
Requires a dedicated cooling system to manage heat at high load, adding complexity
Higher initial capital cost compared with smaller auxiliary generators
Limited voltage flexibility – 690 V may need step‑up/step‑down transformers for some shipboard distribution schemes

Typical Vessels: Container shipsCruise linersTankers (crude, product)LNG carriersOffshore supply vesselsLarge Ro‑Ro / ferry vessels

Decision Guide: Choose if: you need a single high‑capacity generator for main auxiliary power on large ships, require class‑H insulation for hot engine‑room conditions, and prefer the low‑maintenance advantage of a brushless design. Avoid if: space or weight are at a premium, the installation area is exposed to heavy spray requiring higher IP protection, or budget constraints favor smaller, lower‑cost units.

Use Cases: Typically installed as the primary auxiliary generator on large ocean‑going vessels to supply propulsion auxiliaries, hotel loads, cargo handling equipment, and emergency power. Also used in offshore platforms where a reliable high‑output source is needed for drilling rigs, pumps, and HVAC systems.

Datasheet

LSA 47.3 1750kVA 400V 50Hz unverified

· high‑speed marine synchronous generator

Power (kVA)

1750

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1.75 MVA) suitable for large hotel loads
Robust construction with class H insulation for high temperature operation
Proven reliability from extensive service in the maritime sector
Modular design that eases installation and maintenance on deck
Integrated cooling system compatible with shipboard air‑cooled loops

Weaknesses

Large physical size and weight, requiring substantial space and structural support
IP23 enclosure provides limited protection against water ingress; not suitable for harsh wet‑deck environments without additional shielding
Designed for a single frequency (50 Hz); not ideal where dual‑frequency capability is required
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Cruise shipLarge container vesselVLCC/TankerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a proven, high‑capacity 1.75 MVA generator for main or auxiliary power on large vessels and have sufficient space and cooling infrastructure. Avoid if the installation area is constrained, exposure to heavy spray/water is expected without extra protection, or dual‑frequency operation is required.

Use Cases: Commonly installed as a primary auxiliary generator supplying hotel services on cruise ships, as a main generator for propulsion support on tankers and container vessels, and as an emergency power source on offshore supply ships where high reliability is critical.

Datasheet

LSA 47.3 1750kVA 400V 60Hz unverified

· high-speed marine alternator

Power (kVA)

1750

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 1750 kVA in a relatively compact footprint.
Class H insulation allows reliable operation at elevated temperatures.
Four‑pole design provides good voltage regulation and low harmonic distortion.
IP23 enclosure offers protection against splashing water while allowing easy access for maintenance.
Proven Leroy‑Somer brand reputation for durability and service support.

Weaknesses

IP23 rating is not fully dust‑tight; unsuitable for extremely harsh marine environments without additional sealing.
Limited to 400 V output – may require step‑up transformers for vessels standardising on higher bus voltages.
No built‑in redundancy; a single unit failure impacts auxiliary power unless paired with another generator.
Requires regular brush and bearing maintenance typical of high‑speed alternators.

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for vessels operating on a 400 V bus and can accommodate routine high‑speed maintenance. Avoid if the installation demands higher voltage levels, dust‑tight enclosures, or fully redundant power without additional units.

Use Cases: Commonly installed as an auxiliary generator set in medium‑to‑large merchant ships to supply hotel loads, cargo handling equipment, and emergency power, often paired with diesel engines in a genset configuration.

Datasheet

LSA 47.3 1750kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

1750

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1750 kVA) suitable for large vessel main generators
Class H insulation tolerates elevated temperatures common in engine rooms
IP23 enclosure provides adequate protection against dust and water spray for typical shipboard installations
Four‑pole design ensures stable 50 Hz frequency at the standard 1500 rpm speed
Leroy‑Somer reputation for long service life and proven reliability in marine environments

Weaknesses

Physical size and weight are substantial, requiring dedicated generator room space
IP23 rating is only moderate; additional shielding may be needed in harsher wet zones
Fixed speed operation (1500 rpm) limits compatibility with variable‑speed propulsion systems
Output voltage limited to 440 V three‑phase, often necessitating step‑up transformers for higher distribution voltages
No built‑in redundancy; a second unit is required for critical power continuity

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore support vessel

Certifications: IMO Type Approval

Decision Guide: Choose if you need a high‑power, robust synchronous alternator for a conventional diesel‑driven main generator set on large commercial vessels and can accommodate its size. Avoid if space is limited, you require higher protection ratings (e.g., IP65), or you plan to use variable‑speed engines that demand a flexible frequency solution.

Use Cases: Typically installed as the primary generator in the main power plant of tankers, container ships, bulk carriers and cruise liners, often coupled directly to medium‑speed diesel engines for propulsion and hotel load supply. Also used on offshore support vessels where high reliability and temperature tolerance are critical.

Datasheet

LSA 47.3 1750kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

1750

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1750 kVA) suitable for large auxiliary loads
Class‑H insulation provides good thermal endurance in harsh marine environments
Proven Leroy‑Somer reliability and low maintenance design
Standard 4‑pole construction gives stable 60 Hz operation at 1800 rpm
Compact integrated alternator layout simplifies installation on engine rooms

Weaknesses

IP23 enclosure offers limited protection against water ingress; may need additional shielding in wet zones
Fixed 440 V/60 Hz output limits flexibility for vessels that operate on 50 Hz or different voltage levels
Physical size and weight can be a constraint on smaller ships or retrofits
No built‑in redundancy; a single unit failure impacts full auxiliary power capacity
Requires external cooling system in high ambient temperature conditions

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑capacity 1750 kVA generator at 440 V/60 Hz for large commercial vessels and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (e.g., IP55), 50 Hz operation, or space‑critical layouts.

Use Cases: Main auxiliary power generation on large ocean‑going ships, emergency generator sets for hotel load, and shore‑power conversion units where a robust, high‑output alternator is required.

Datasheet

LSA 47.3 1750kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

1750

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power (1.75 MVA) with robust 4‑pole design suitable for large diesel engine drives
Class H insulation provides thermal resilience up to 180 °C, supporting overload operation
Modular construction and standardised mounting simplify installation and maintenance on board
Proven reliability in long‑haul tankers and container ships with documented service life >20 000 h
Integrated cooling system (air‑forced) meets marine environmental requirements

Weaknesses

Large physical footprint and weight demand considerable engine‑room space
IP23 enclosure offers limited protection against water ingress, unsuitable for harsh spray zones
Designed only for 50 Hz systems; not directly compatible with 60 Hz markets without redesign
Spare parts are specific to Leroy‑Somer LSA series and may have longer lead times
Initial capital cost is higher than some competing low‑speed alternator families

Typical Vessels: VLCC/TankerUltra Large Container Ship (ULCS)Panamax/Bulk CarrierLNG carrier (auxiliary power)Offshore supply vessel

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a high‑power (≈1.7 MVA) 690 V auxiliary or propulsion generator for a large diesel‑driven installation, value proven reliability and easy on‑board serviceability, and operate in a 50 Hz market. Avoid if vessel space is at a premium, the installation requires higher IP protection, or you must run on a 60 Hz electrical system.

Use Cases: Typically installed as main auxiliary generators on large tankers and container ships to supply shipboard electricity and emergency power; also used as propulsion‑assist generators on LNG carriers and offshore vessels where high torque and overload capability are required.

Datasheet

LSA 47.3 1750kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

1750

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Large continuous output (1750 kVA) suitable for main auxiliary power on large vessels
H‑class insulation allows operation at elevated temperatures, improving reliability in hot climates
Proven Leroy‑Somer design with a long service history in marine applications
Modular construction simplifies routine maintenance and part replacement
Standard 690 V shipboard voltage matches most existing distribution systems

Weaknesses

IP23 enclosure provides only limited protection against dust and water spray; additional sealing may be required for harsh environments
Designed exclusively for 60 Hz operation, limiting use on vessels that require 50 Hz power
Physical size and weight are substantial, affecting installation space and handling
Requires an external excitation system, adding complexity to the control arrangement
Higher initial capital cost compared with some lower‑rated or generic alternators

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 1750 kVA auxiliary generator at 690 V/60 Hz, have sufficient installation space, and value Leroy‑Somer’s service record. Avoid if: the vessel operates on a 50 Hz system, requires a fully dust‑tight (IP65+) enclosure, or has strict weight/space constraints.

Use Cases: Typically installed as the primary auxiliary generator on large merchant vessels to supply hotel loads, cargo handling equipment, and emergency power; also used on offshore support ships where high continuous output and robust thermal performance are critical.

Datasheet

LSA 47.3 2000kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High 2 MW output suitable for large auxiliary power demands
H‑class insulation permits operation at elevated temperatures and extends service life
IP23 enclosure protects against water spray typical of engine rooms
Four‑pole design ensures stable 50 Hz frequency with low vibration
Backed by Leroy‑Somer’s global service network and proven reliability

Weaknesses

Large physical footprint may require extensive installation space
Requires an external cooling system (air or water), adding complexity
Fixed 400 V output limits flexibility for vessels needing higher distribution voltages
Higher initial capital cost compared with smaller generators
Periodic maintenance of the exciter and bearings is still required

Typical Vessels: Cruise ShipContainer ShipTankerOffshore Supply VesselBulk Carrier

Decision Guide: Choose if the vessel needs a robust 2 MW auxiliary generator at 400 V, operates in a harsh marine environment and values long service intervals with strong OEM support. Avoid if space is limited, higher voltage distribution is required, or budget constraints favor smaller, lower‑cost units.

Use Cases: Commonly installed as the main auxiliary generator on large passenger liners, tankers, container vessels, and offshore support ships to supply hotel loads, cargo handling equipment, navigation systems, and emergency power.

Datasheet

LSA 47.3 2000kVA 400V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2 MW) suitable for large vessel auxiliary loads
H‑class insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Standard 4‑pole design runs at 1 500 rpm on 60 Hz systems, matching common marine prime mover speeds
Proven Leroy‑Somer reputation for durability and low maintenance intervals
Modular construction simplifies installation and future upgrades

Weaknesses

IP23 enclosure provides only splash protection; not suitable for dusty or highly corrosive environments without additional shielding
Oil‑lubricated cooling system adds complexity and requires regular oil management
Fixed 400 V output may require step‑up transformers for vessels that standardise on higher voltages (e.g., 660 V)
Physical size and weight are substantial, impacting space allocation in smaller ships
No integrated control package; external governor/automation required

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Decision Guide: Choose the LSA 47.3 if you need a proven 2 MW synchronous generator with standard 400 V/60 Hz output, robust construction and can accommodate oil‑lubricated cooling in vessels that operate at or near 1 500 rpm. Avoid it when higher voltage (e.g., 660 V) is required, when a dust‑tight enclosure (IP55+) is mandatory, or when you prefer an integrated electronic control system.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels to supply hotel loads and emergency power, or paired with multiple units for redundancy on cruise ships and offshore platforms.

Datasheet

LSA 47.3 2000kVA 440V 50Hz unverified

· Industrial marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MVA) in a compact footprint for its class
Robust cast‑iron frame and Class H insulation suitable for continuous operation
Proven Leroy‑Somer brand reputation for reliability and long service life
Modular design allows easy on‑site maintenance and part replacement
Standard 440 V/50 Hz output matches most European‑type shipboard electrical systems

Weaknesses

IP23 enclosure provides limited protection against water spray; not ideal for exposed deck installations
Fixed 440 V rating may require step‑up transformers on vessels that standardise on higher bus voltages (e.g., 690 V)
External cooling system required, adding to installation complexity
Weight and size are substantial; handling requires adequate lifting equipment
Limited availability of spare parts in regions without Leroy‑Somer service network

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if you need a proven 2 MVA generator at 440 V for main or auxiliary power on large vessels and can accommodate an IP23 enclosure with external cooling. Avoid if the ship operates on higher bus voltages, requires a fully sealed (IP66+) unit for harsh exposure, or has strict weight‑budget constraints.

Use Cases: Typically installed in engine rooms as a primary auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on large commercial ships; also used as a standby generator on cruise vessels where redundancy is critical.

Datasheet

LSA 47.3 2000kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MW) suitable for main hotel and emergency loads on large ships
Class H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
IP23 enclosure provides protection against water spray while allowing easy access for maintenance
Four‑pole design runs at 1500 rpm on a 60 Hz system, matching standard marine diesel engine speeds
Proven Leroy‑Somer brand with extensive service network and spare parts availability

Weaknesses

Large physical footprint and heavy construction may limit installation space on smaller vessels
IP23 rating does not protect against dust ingress; additional sealing may be required in harsh environments
Fixed 440 V output may need step‑up/down transformers for vessels with different voltage standards
Higher initial capital cost compared with lower‑rated generators
Requires skilled personnel for periodic inspection and winding maintenance

Typical Vessels: TankerBulk carrierContainer shipCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if: you need a robust 2 MW auxiliary generator for a large vessel, operate on a 440 V/60 Hz system, and value proven synchronous technology with high‑temperature insulation. Avoid if: space or weight are at a premium, the installation requires fully dust‑tight enclosures, or the vessel uses a different voltage standard that would add conversion complexity.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, emergency power, and support dynamic positioning systems; also used for shore‑power generation on vessels equipped with ISO‑compatible export cables.

Datasheet

LSA 47.3 2000kVA 690V 50Hz unverified

· 4-pole synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MVA) suitable for main or auxiliary generation on large vessels
Class‑H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Standard shipboard voltage (690 V) and frequency (50 Hz) simplify integration with existing electrical systems
Proven Leroy‑Somer design known for mechanical robustness and long service life
Modular construction eases installation and maintenance

Weaknesses

IP23 enclosure provides only splash protection; not suitable for areas requiring higher dust/immersion ratings (e.g., IP55)
Physical size and weight are substantial, demanding ample engine‑room space
Designed exclusively for 50 Hz operation – not compatible with vessels that require dual‑frequency capability
Requires dedicated cooling system to maintain class‑H temperature limits
May need specific control gear from Leroy‑Somer, limiting flexibility with third‑party controllers

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsLarge container vesselsOffshore supply vessels

Decision Guide: Choose if: you need a reliable 2 MVA generator at the standard 690 V/50 Hz shipboard voltage, have sufficient engine‑room space, and operate in environments where splash protection (IP23) is adequate. Avoid if: higher ingress protection (e.g., IP55), dual‑frequency capability, or compact size are critical requirements.

Use Cases: Typically installed as a main propulsion generator set on large tankers and cruise ships, or as an auxiliary power source for hotel loads and emergency power on vessels with high electrical demand.

Datasheet

LSA 47.3 2000kVA 690V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high continuous power output (2 MVA) suitable for large ship auxiliaries
Robust class‑H insulation allowing operation at elevated temperatures
Standard 690 V three‑phase output matches most modern marine electrical systems
Modular construction simplifies installation and routine maintenance
Proven Leroy‑Somer brand with long service history in marine applications

Weaknesses

Large physical size and weight require significant engine room space
IP23 enclosure provides only splash protection; additional sealing may be needed for harsh environments
Designed for 60 Hz operation – a separate 50 Hz version is required for some regions
Requires dedicated cooling system (air‑forced or water‑cooled) adding to complexity
Higher acoustic level compared with low‑speed, low‑vibration generators

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>8 000 TEU)Cruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a proven, high‑output auxiliary generator of ≥1.5 MVA at 690 V, have sufficient engine‑room volume and can accommodate the required cooling and ventilation. Avoid if: space is limited, you require higher ingress protection (IP55+), or the vessel operates on a 50 Hz power system without a dedicated variant.

Use Cases: Typically installed as the main auxiliary generator set on large ocean‑going vessels to supply hotel loads, cargo handling equipment and emergency power. Also used in diesel‑electric propulsion schemes where a high‑capacity alternator feeds electric motors or shore power converters.

Datasheet

LSA 49.3 2000kVA 400V 50Hz unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2 MW) suitable for large vessels
Robust class H insulation and IP23 enclosure for harsh marine environments
Proven reliability with low maintenance intervals
Modular design facilitates installation and future upgrades
Good overload capability typical of Leroy‑Somer alternators

Weaknesses

Large physical size and weight require substantial engine room space
IP23 rating offers limited protection against direct water ingress, needing careful placement
Fixed 400 V output may necessitate additional transformers for higher voltage systems
Initial capital cost is relatively high compared with smaller generators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a high‑capacity (≈2 MW) auxiliary or emergency generator for large vessels, value proven reliability and modular installation, and have sufficient engine‑room space. Avoid if: space is at a premium, you require higher voltage directly from the generator, or you need a fully water‑tight enclosure.

Use Cases: Commonly installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on large commercial ships; also used in offshore platforms where robust, continuous power is critical.

Datasheet

LSA 49.3 2000kVA 400V 60Hz unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability of Leroy‑Somer LSA series in demanding marine environments
High continuous power output (2 MVA) suitable for large auxiliary or propulsion loads
Robust four‑pole construction with class H insulation for thermal endurance up to 180 °C
Modular design that simplifies installation and routine maintenance
Good overload capability typical of LSA generators (often 110% for short periods)

Weaknesses

IP23 enclosure offers limited protection against water ingress, unsuitable for wet‑deck installations
Large physical size and weight may restrict placement on vessels with tight engine‑room space
Fixed 400 V output may require additional step‑up transformers for ships standardising on higher voltages (e.g., 660 V)
Class H insulation limits maximum temperature, requiring careful cooling system design in high‑load scenarios
Higher upfront capital cost compared with some lower‑power alternatives

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a proven, high‑capacity generator for 400 V marine power systems and have sufficient space and cooling capacity. Avoid if the installation requires water‑tight (IP66+) protection, higher voltage directly from the alternator, or strict weight/space constraints.

Use Cases: Main auxiliary power plant on large tankers and cruise ships, emergency generator for critical shipboard loads, and as a dedicated propulsion generator on offshore support vessels where 2 MVA at 400 V is required.

Datasheet

LSA 49.3 2000kVA 440V 50Hz unverified

· Synchronous marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MVA) in a single compact unit
Robust IP23 enclosure suitable for protected engine‑room locations
Insulation class H allows operation at elevated temperatures
Proven Leroy‑Somer reliability and long service intervals
Direct 50 Hz output matches standard ship electrical systems, eliminating frequency conversion

Weaknesses

IP23 rating provides only splash protection; not suitable for harsh, dusty environments
Large physical size and weight may limit installation in space‑constrained vessels
Requires forced ventilation or water cooling to maintain temperature limits
Fixed 440 V output may need additional transformers for ships using different bus voltages
Maintenance requires skilled personnel familiar with high‑power synchronous machines

Typical Vessels: Cruise shipLarge tankerContainer vesselOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if you need a proven, high‑capacity generator for large vessels with ample engine‑room space and a 440 V bus system. Avoid if the installation area demands higher ingress protection, lower weight, or if the vessel operates on a different voltage standard that would require additional conversion equipment.

Use Cases: Main service generator supplying shipboard propulsion auxiliaries, hotel loads, cargo handling equipment, and emergency power on large commercial vessels where continuous high‑power output is required.

Datasheet

LSA 49.3 2000kVA 440V 60Hz unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 2 MW suitable for large vessel hotel loads or propulsion auxiliaries
Proven Leroy‑Somer reliability with long service life in harsh marine environments
Class H insulation allows operation at elevated temperatures without derating
Standard 4‑pole construction gives a synchronous speed of 1800 rpm, compatible with common shipboard gearboxes
Modular design facilitates on‑site maintenance and part replacement

Weaknesses

IP23 rating provides only splash protection; not suitable for dusty or highly corrosive compartments without additional shielding
Large physical footprint and weight may limit installation in space‑constrained engine rooms
Designed for 60 Hz systems only – requires frequency conversion on vessels operating at 50 Hz
No integrated control panel; separate governor/controller must be supplied
High insulation class H demands careful cooling management to avoid overheating

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsOffshore supply vesselsLarge container ships

Decision Guide: Choose if: you need a proven 2 MW generator for a 60 Hz shipboard electrical system, have sufficient engine‑room space, and value high temperature tolerance. Avoid if: the installation requires dust‑tight (IP54+) protection, operates on a 50 Hz grid, or has severe weight/space constraints.

Use Cases: Typically installed as part of the main auxiliary power plant on large commercial vessels to supply propulsion auxiliaries, hotel services, and emergency loads; also used in offshore platforms where high‑capacity, reliable generation is critical.

Datasheet

LSA 49.3 2000kVA 690V 50Hz unverified

· high-power marine alternator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

2000 kVA output matches the standard 690 V shipboard bus for high‑capacity ships
H‑class insulation provides excellent thermal endurance and reliability
Robust IP23 enclosure offers splash protection suitable for typical engine‑room environments
Four‑pole design yields smoother voltage and frequency stability under load variations
Leroy‑Somer reputation for long service life and worldwide support

Weaknesses

IP23 rating does not protect against dust or heavy water ingress; additional sealing may be required in harsh climates
Physical size and weight are substantial, demanding ample engine‑room space and robust mounting structures
Designed for a single frequency (50 Hz); not suitable where dual‑frequency (50/60 Hz) capability is needed
Requires dedicated cooling system integration; improper cooling can reduce efficiency
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a proven 2000 kVA generator that fits the standard 690 V bus on large merchant or offshore vessels, value H‑class insulation for high thermal loads, and have sufficient engine‑room space. Avoid if: vessel size limits space, you require higher IP protection (e.g., IP55), dual‑frequency operation, or a lower‑cost solution for smaller power needs.

Use Cases: Typically installed as the main propulsion generator set on large tankers, container ships and cruise vessels, or as a high‑capacity auxiliary generator to supply hotel loads and emergency power on offshore platforms and LNG carriers.

Datasheet

LSA 49.3 2000kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high power output (2 MVA) in a single unit reduces the number of generators required.
Four‑pole design provides stable 60 Hz operation with low vibration, suitable for sensitive shipboard equipment.
Robust construction and proven Leroy‑Somer reliability, backed by decades of marine service history.
Standard 690 V bus voltage matches most existing ship electrical architectures, simplifying integration.
IP23 enclosure allows easy visual inspection while still protecting against splashing water.

Weaknesses

Large physical size and weight demand significant installation space and structural support.
IP23 rating is only splash‑proof; additional shielding or a fully enclosed version may be required for harsh marine environments.
Designed exclusively for 60 Hz operation, limiting use on vessels that run on 50 Hz systems.
External cooling system (often water‑cooled) adds complexity and maintenance requirements.
Higher initial capital cost compared with smaller modular generator sets.

Typical Vessels: Very Large Crude Carrier (VLCC)LNG carrierCruise shipOffshore supply vesselLarge container ship

Decision Guide: Choose if: you need a single, high‑capacity generator for 690 V/60 Hz systems on large vessels and have space for a sizable unit; existing infrastructure already matches Leroy‑Somer’s voltage and cooling requirements. Avoid if: the vessel operates on 50 Hz, requires a higher IP rating without additional enclosures, or has strict weight/space constraints that favor multiple smaller generators.

Use Cases: Typically installed as the main auxiliary generator for propulsion support, hotel load supply, and emergency power (when paired with an appropriate UPS) on large ocean‑going ships where a single high‑output source simplifies wiring and reduces redundancy management.

Datasheet

LSA 49.3 2500kVA 400V 50Hz unverified

· synchronous marine generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2500 kVA) suitable for demanding shipboard loads
Robust four‑pole design runs at standard 1500 rpm on 50 Hz systems, matching common marine prime‑mover speeds
Insulation class H allows operation at elevated temperatures, improving reliability in hot engine rooms
IP23 enclosure provides splash protection while keeping the unit relatively compact for its power rating

Weaknesses

IP23 rating is only splash‑proof; not dust‑tight or fully sealed against harsh marine environments
400 V output may require additional step‑up transformers for vessels that standardise on higher voltages (e.g., 660 V)
Large physical size and weight typical of a 2500 kVA generator demand significant installation space
No integrated control or governor system – requires separate auxiliary equipment

Typical Vessels: Container shipBulk carrierCruise linerLNG carrierOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑power (2500 kVA) 400 V generator for a 50 Hz marine installation and have space for an IP23 unit with external control gear. Avoid if your vessel requires higher voltage output, a fully dust‑tight enclosure, or an all‑in‑one generator set with built‑in governor.

Use Cases: Typically installed as part of the main propulsion plant on large merchant vessels or as a high‑capacity auxiliary generator for hotel loads and emergency power on cruise ships and offshore support vessels.

Datasheet

LSA 49.3 2500kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (2500 kVA) in a compact 4‑pole design suitable for 60 Hz systems
Insulation class H allows operation at elevated temperatures, improving reliability in hot engine rooms
IP23 enclosure provides protection against dust and solid objects, suitable for sheltered deck installations
Proven Leroy‑Somer brand reputation for durability and long service intervals
Standard 400 V three‑phase output matches most shipboard distribution systems

Weaknesses

IP23 rating offers limited water ingress protection; not ideal for exposed or wet locations without additional shielding
Physical size and weight are substantial, requiring dedicated space and strong mounting structures
Requires regular brush/commutator maintenance if the specific unit is not brush‑less
Higher initial cost compared with some lower‑rated generators from competing manufacturers

Typical Vessels: Crude oil tankerContainer shipBulk carrierOffshore supply vesselCruise liner (auxiliary power)

Decision Guide: Choose if: you need a reliable 2500 kVA auxiliary generator for large vessels, operate in hot engine‑room environments, and can accommodate the unit’s size with an IP23‑rated compartment. Avoid if: space is extremely limited, the installation is exposed to heavy spray or seawater without additional protection, or you require a brush‑less design.

Use Cases: Typically installed as the main auxiliary generator on large merchant ships, providing power for hotel services, cargo handling equipment, and emergency systems; also used in offshore platforms where high continuous output and temperature resilience are critical.

Datasheet

LSA 49.3 2500kVA 440V 50Hz unverified

· brushless low‑speed alternator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2500 kVA) suitable for large vessel electrical loads
Brushless design reduces routine maintenance and improves reliability
Insulation class H allows operation at elevated temperatures typical of marine engine rooms
IP23 enclosure provides protection against splashing water and dust in harsh sea environments
4‑pole construction runs at 1500 rpm (50 Hz), lowering mechanical stress on bearings

Weaknesses

Large physical footprint and weight require substantial installation space and structural support
Higher upfront capital cost compared with lower‑rated generators
IP23 rating is not fully sealed; additional ventilation or protective measures may be needed in very wet compartments
Designed for 50 Hz only, limiting use on vessels standardized to 60 Hz without frequency conversion
Requires skilled personnel for commissioning and periodic condition monitoring

Typical Vessels: Cruise shipContainer vesselTankerLNG/LPG carrierOffshore supply vesselFloating production storage & offloading (FPSO) unit

Decision Guide: Choose if: you need a robust, high‑capacity generator (>2000 kVA) for a 50 Hz marine installation, value low‑maintenance brushless technology, and have sufficient engine‑room space. Avoid if: the vessel operates on 60 Hz systems, has strict weight/space constraints, or budget limits preclude a premium‑priced unit.

Use Cases: Commonly installed as part of the main auxiliary power plant on large passenger ships, as a primary generator set on offshore platforms, and as high‑capacity emergency power on tankers and bulk carriers where reliable, continuous electricity is critical.

Datasheet

LSA 49.3 2500kVA 440V 60Hz unverified

· brushless synchronous generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (2.5 MVA) suitable for large ship auxiliaries
Class H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Standard 4‑pole design gives 1 500 rpm at 60 Hz, matching common marine diesel prime‑movers
Proven Leroy‑Somer brand with long service history in the maritime sector

Weaknesses

IP23 enclosure provides only limited protection against water spray; not ideal for wet‑deck installations
Fixed 440 V output may require additional transformers for vessels standardising on other voltages (e.g., 690 V)
Physical size and weight are substantial, requiring significant engine‑room space
Requires a dedicated cooling fan system, adding to auxiliary power consumption

Typical Vessels: Container shipBulk carrierCruise linerLNG carrierOffshore supply vessel

Decision Guide: Choose if you need a robust 2.5 MVA auxiliary generator for a 60 Hz fleet, have sufficient engine‑room space and can accommodate an IP23 enclosure. Avoid if the vessel operates on 50 Hz systems, requires higher voltage outputs, or needs a higher ingress protection rating for wet environments.

Use Cases: Commonly installed as the main auxiliary power source on large merchant vessels, providing electricity for hotel services, cargo handling equipment, and emergency generators; also used in shore‑power conversion sets where 440 V/60 Hz is required.

Datasheet

LSA 49.3 2500kVA 690V 50Hz unverified

· brushless synchronous generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2.5 MVA) suitable for large ship service‑load demands
Robust low‑speed design (4‑pole) reduces mechanical stress and extends bearing life
Insulation class H provides excellent thermal endurance for overload periods
Proven track record in marine applications with Leroy‑Somer’s long‑standing reliability
Standard 690 V three‑phase output matches most shipboard distribution systems

Weaknesses

Large physical size and weight require substantial engine‑room space
IP23 enclosure only protects against solid objects >12.5 mm; not fully splash‑proof, so location must be dry
Fixed 690 V rating may need step‑up transformers for vessels that operate at higher distribution voltages
Higher initial capital cost compared with smaller or modular generator sets

Typical Vessels: Cruise shipLNG carrierOffshore supply vesselLarge container shipNaval auxiliary

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a proven, high‑capacity generator for a large vessel with ample engine‑room space and a standard 690 V distribution system. Avoid if the installation is size‑constrained, requires higher native voltage, or demands a fully sealed (IP66+) enclosure.

Use Cases: Typically installed as part of the main power plant on cruise liners, LNG carriers, offshore platforms and other large commercial ships to supply shipboard electricity for propulsion auxiliaries, hotel loads, and cargo handling equipment.

Datasheet

LSA 49.3 2500kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2500 kVA) in a single unit reduces the number of generators required.
H‑class insulation allows operation at elevated temperatures, improving reliability in hot engine rooms.
Four‑pole design provides standard 1800 rpm speed for 60 Hz systems, simplifying integration with existing marine drives.
Proven Leroy‑Somer brand reputation and widespread service network worldwide.
IMO D‑2 classification ensures compliance with international marine electrical equipment standards.

Weaknesses

IP23 enclosure offers only limited protection against water spray; not suitable for exposed wet‑zone installations.
Large physical size and weight may restrict fit on smaller vessels or retrofits.
Requires an external excitation system (brushless exciter) and associated control gear, adding complexity.
Continuous operation at full load often needs forced‑air or water cooling upgrades.
Higher initial capital cost compared with lower‑rated alternatives.

Typical Vessels: Crude oil tankerProduct tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D-2DNV GL

Decision Guide: Choose this alternator when a vessel needs a single, high‑capacity auxiliary generator that meets IMO D‑2 standards and can be serviced globally. It is ideal for large ships with ample engine‑room space and a requirement for robust, temperature‑tolerant equipment. Avoid it on smaller vessels, in compartments exposed to heavy spray or seawater, or when a compact, higher‑IP rating unit is mandatory.

Use Cases: Typically installed as the main auxiliary generator on large tankers, container ships, and cruise vessels to supply hotel loads, cargo handling systems, and emergency power. Also used in offshore platforms where high continuous power and proven classification approval are critical.

Datasheet

LSA 49.3 3000kVA 400V 50Hz unverified

· Synchronous marine alternator

Power (kVA)

3000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (3000 kVA) suitable for main or emergency generation on large ships
Class‑H insulation provides excellent thermal endurance and reliability
Standard 400 V three‑phase output matches common shipboard distribution systems
Proven track record with Leroy‑Somer’s global service network, simplifying spare‑parts logistics
IP23 enclosure offers protection against dust and limited water ingress while allowing easy access for maintenance

Weaknesses

Physical size and weight are substantial; may require dedicated generator room space
Enclosure IP23 is not fully splash‑proof – additional weather‑proofing needed in harsh marine environments
Designed for 50 Hz operation only, limiting use on vessels that standardise on 60 Hz
External cooling system required (air or water), adding auxiliary components and maintenance points
Higher initial capital cost compared with smaller, lower‑rated generators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise liner (auxiliary power)Offshore supply vessel

Certifications: IMO Type ApprovalDNV ClassificationABS Classification

Decision Guide: Choose if you need a proven, high‑capacity 3000 kVA generator that integrates with standard 400 V shipboard systems and you have space for a large unit. Avoid if the vessel operates on 60 Hz, requires a higher IP rating for exposed installations, or has strict weight/space constraints.

Use Cases: Typically installed as the main auxiliary generator on tankers and container ships, providing power for cargo handling equipment, hotel services, and emergency loads. Also used on cruise vessels for hotel load support and on offshore supply ships where a reliable high‑output source is critical for dynamic positioning systems.

Datasheet

LSA 49.3 3000kVA 400V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

3000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (3000 kVA) suitable for large vessel hotel loads
Proven Leroy‑Somer reliability and long service life with class‑H insulation
Compact IP23 enclosure simplifies installation in engine rooms
Brushless design reduces maintenance intervals and eliminates brush wear
Standard 4‑pole, 400 V/60 Hz interface matches most marine diesel engines

Weaknesses

IP23 rating provides limited protection against water ingress; additional sealing may be required for wet deck locations
Physical size and weight are substantial, impacting space‑critical installations
Fixed 400 V output may require step‑up/down transformers for vessels using other voltage standards
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Cruise shipFerryOffshore supply vesselContainer shipTankerNaval auxiliary vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a robust, high‑power (3 MVA) brushless generator with proven Leroy‑Somer reliability for main or emergency hotel load on large vessels and can accommodate the IP23 enclosure. Avoid if vessel space is extremely limited, water‑tight protection beyond IP23 is required without additional housing, or a different voltage level is mandatory.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel services, cargo handling equipment, and emergency power on large commercial vessels; also used in dual‑generator configurations for redundancy on cruise ships and offshore platforms.

Datasheet

LSA 49.3 3000kVA 440V 50Hz unverified

· Low‑speed marine alternator

Power (kVA)

3000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (3000 kVA) in a relatively compact footprint
Insulation class H provides tolerance to elevated operating temperatures
Robust 4‑pole design ensures stable frequency and low vibration
IP23 enclosure offers protection against dust and splashing water typical of engine rooms
Proven Leroy‑Somer reliability with long service intervals

Weaknesses

Heavy dead‑weight compared with newer lightweight generator sets (exact weight not published)
Fixed 50 Hz output – unsuitable for vessels requiring 60 Hz or dual‑frequency capability
IP23 rating does not protect against direct water ingress, limiting placement in harsher wet zones
Efficiency drops noticeably at low load, leading to higher fuel consumption when partially loaded
Requires dedicated forced‑air cooling system and associated maintenance

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a high‑capacity, robust auxiliary generator for a large vessel operating on a 50 Hz grid and value proven Leroy‑Somer durability. Avoid if: the installation demands a higher IP rating, dual‑frequency capability, or weight‑critical solutions.

Use Cases: Commonly installed as the main hotel‑load generator on ocean‑going cargo ships, providing continuous power for navigation, accommodation, and cargo handling systems; also used as an emergency generator to meet SOLAS requirements and to supply auxiliary loads for propulsion auxiliaries such as pumps and compressors.

Datasheet

LSA 49.3 3000kVA 440V 60Hz unverified

· air-cooled synchronous alternator

Power (kVA)

3000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 3000 kVA suitable for large vessel hotel loads
Class H insulation permits operation at elevated ambient temperatures
Four‑pole construction ensures stable 60 Hz frequency with low vibration
IP23 enclosure offers protection against splash and dust, meeting typical marine standards
Leroy‑Somer’s global service network facilitates maintenance and spare parts availability

Weaknesses

IP23 rating is not fully sealed; unsuitable for areas exposed to heavy spray or saltwater immersion
Designed for 60 Hz systems only – may require derating or conversion for 50 Hz markets
Physical size and weight can be limiting on vessels with constrained engine‑room space
Requires dedicated cooling system (air‑forced) which adds auxiliary power consumption
Initial capital cost is higher than some competing lower‑rated generators

Typical Vessels: Cruise shipContainer vesselTankerBulk carrierOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a reliable 3000 kVA, 60 Hz source for large commercial vessels, have sufficient engine‑room space, and value Leroy‑Somer’s service support. Avoid if: the vessel operates primarily in 50 Hz regions, requires a fully sealed (IP55+) generator, or has severe space/weight constraints.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads on cruise ships, as an emergency power source on tankers and container vessels, or as part of the power plant on offshore support ships where high‑capacity, temperature‑tolerant generation is required.

Datasheet

LSA 49.3 3000kVA 690V 50Hz unverified

· low-speed marine alternator

Power (kVA)

3000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (3 MVA) in a single unit reduces the number of generators needed
Class H insulation tolerates high operating temperatures, enhancing durability
Robust IP23 enclosure protects against dust and splashing water typical on ships
Low rotational speed matches directly with marine propulsion gearboxes, lowering mechanical stress
Leroy‑Somer reputation for long‑term reliability and worldwide service support

Weaknesses

Physical size and weight are substantial, requiring significant engine‑room space
IP23 rating offers limited protection against heavy water ingress compared with higher IP classes
Efficiency drops noticeably at low partial loads, common in variable ship power profiles
Fixed 690 V output may need additional conversion equipment for vessels using different bus voltages
Maintenance of brush‑type versions can be more frequent than fully brushless designs

Typical Vessels: Cruise shipContainer vesselTankerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a single, high‑capacity generator for large ships with ample engine‑room space and prefer proven low‑speed technology. Avoid if the installation is size‑constrained, requires higher IP protection, or operates predominantly at low loads where efficiency becomes critical.

Use Cases: The LSA 49.3 is commonly installed as the main generator set on cruise liners, large tankers, and offshore support vessels, providing primary electrical power for propulsion auxiliaries, hotel services, and cargo handling equipment.

Datasheet

LSA 49.3 3000kVA 690V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

3000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (3 MVA) suitable for large vessels' auxiliary loads
Class H insulation permits operation at elevated temperatures, enhancing reliability in hot climates
Integrated brush‑less excitation reduces maintenance and improves lifespan
IP23 enclosure provides protection against dust and limited splashing while allowing easy access for service
Standard 690 V three‑phase output matches common marine electrical systems

Weaknesses

Physical size and weight are substantial, requiring dedicated generator room space
IP23 rating is not fully splash‑proof; additional sealing may be needed in harsh sea conditions
Designed for 60 Hz only; a separate 50 Hz version must be sourced for markets that require it
Requires forced cooling (air or water) and associated auxiliary equipment
Initial capital cost is higher than smaller, lower‑power alternatives

Typical Vessels: TankersBulk carriersContainer shipsCruise linersOffshore supply vesselsNaval auxiliaries

Certifications: DNV GL Type ApprovalIEC 60034‑1 complianceCE marking

Decision Guide: Choose if you need a high‑capacity, reliable auxiliary generator for large commercial or offshore vessels and have sufficient space for a 690 V, 3 MVA unit with class H insulation. Avoid if vessel size constraints limit generator room volume, if a higher IP rating is mandatory, or if the ship operates on a 50 Hz power system without a compatible model.

Use Cases: Typically installed as part of an auxiliary power plant on tankers and bulk carriers to supply hotel loads, cargo handling equipment, and emergency systems; also used on cruise ships for hotel services and on offshore support vessels where high‑power, low‑maintenance generation is required.

Datasheet

LSA 50.2 1600kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1.6 MVA suitable for main or auxiliary generation on large vessels
Class‑H insulation allows operation in elevated temperature zones typical of engine rooms
Robust 4‑pole design provides stable frequency and low vibration at 1500 rpm (50 Hz)
IP23 enclosure protects against splashing water while allowing easy access for maintenance

Weaknesses

IP23 rating is not splash‑proof for harsh open‑deck exposure; additional protection needed in wet locations
Relatively large footprint and weight compared with compact, oil‑free generators of similar power
Standard 400 V output may require step‑up/down transformers for vessels using other voltage levels
No built‑in redundancy; a second unit is required for critical load continuity

Typical Vessels: Crude Oil TankerContainer ShipBulk CarrierOffshore Supply VesselCruise Ship

Decision Guide: Choose if: you need a proven, high‑power marine generator with strong thermal capability for main propulsion or large auxiliary loads on vessels that already operate at 400 V/50 Hz. Avoid if: the installation requires explosion‑proof (IP66) protection, very limited space/weight, or direct integration into low‑voltage (e.g., 230 V) distribution without additional transformers.

Use Cases: The LSA 50.2 is typically installed as a main generator on large commercial ships—providing propulsion power or supplying the ship’s electrical grid—and also used as an auxiliary generator on offshore platforms where high reliability and temperature tolerance are essential.

Datasheet

LSA 50.2 1600kVA 400V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high apparent power (1.6 MVA) in a single unit, reducing the number of generators needed
Class H insulation provides excellent thermal endurance and reliability under continuous load
Four‑pole design gives good low‑rpm performance suitable for marine drive shafts
Proven Leroy‑Somer reputation for durability and long service intervals

Weaknesses

IP23 enclosure offers only limited protection against water spray; not suited for harsh wet environments without additional shielding
Designed for 60 Hz operation only, limiting use on vessels that operate on 50 Hz power systems
Physical size and weight are substantial (exact figures unavailable), requiring significant installation space
Requires a dedicated cooling system (air‑forced or water‑cooled) which adds complexity

Typical Vessels: Crude oil tankerContainer shipBulk carrierOffshore supply vesselCruise liner

Decision Guide: Choose if: you need a single, high‑capacity auxiliary generator for a 400 V, 60 Hz marine power system and have space for an open‑type (IP23) alternator with adequate ventilation. Avoid if: the vessel operates on 50 Hz grids, requires higher ingress protection (e.g., IP55), or has strict weight/space constraints that favour more compact units.

Use Cases: Typically installed as part of a ship's auxiliary power plant to supply hotel loads, cargo handling equipment, and emergency power. Frequently paired with diesel engine sets in generator rooms on large commercial vessels where redundancy and high output are critical.

Datasheet

LSA 50.2 1600kVA 440V 50Hz unverified

· low‑speed synchronous marine alternator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption for auxiliary power.
Class H insulation allows operation at elevated temperatures and improves durability.
Robust cast‑iron frame and IP23 enclosure provide good protection against the harsh marine environment.
Four‑pole design gives smooth torque and low vibration, suitable for continuous operation.
Proven Leroy‑Somer reputation for reliability and long service intervals.

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for wet‑bay installations requiring higher IP.
Physical size and weight are relatively large for the power rating, demanding ample engine‑room space.
Designed for 50 Hz only – not directly compatible with vessels that operate on 60 Hz systems.
Initial capital cost is higher than some competing low‑speed generators of similar output.
Requires external exciter system (brushless configuration) which adds to installation complexity.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a high‑power (≈1.6 MVA) auxiliary generator with proven low‑speed efficiency, have sufficient engine‑room space and operate on a 50 Hz system. Avoid if: the installation requires a higher IP protection level, operates on 60 Hz, or has severe weight/space constraints.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on large commercial vessels; also used in dynamic positioning systems where steady, low‑vibration power is critical.

Datasheet

LSA 50.2 1600kVA 440V 60Hz unverified

· marine synchronous generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1600 kVA) suitable for large ship service loads
Robust Leroy‑Somer brand reputation and proven field reliability
Insulation class H allows operation at elevated temperatures
4‑pole design provides stable frequency at 60 Hz
IP23 enclosure offers basic splash protection while keeping cooling simple

Weaknesses

IP23 rating may be insufficient for heavily sprayed or wet deck areas; higher IP ratings are preferred in harsh environments
Relatively large physical size and weight typical of high‑output alternators (no exact data available)
No integrated digital control system – requires external governor/monitoring package
Limited to 440 V output, which may need step‑up/down conversion for some ship electrical architectures
Efficiency and emissions performance may be lower than newer low‑speed or permanent‑magnet designs

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑capacity 1600 kVA generator for 60 Hz vessels and can accommodate an IP23 enclosure with external control equipment. Avoid if the installation requires higher ingress protection (IP55+), integrated automation, or a more compact/weight‑critical solution.

Use Cases: Commonly installed as a main auxiliary generator on large cargo carriers, cruise ships, and offshore support vessels to supply hotel loads, deck machinery, and emergency power where reliable high output is critical.

Datasheet

LSA 50.2 1600kVA 690V 50Hz unverified

· high-power marine alternator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

H‑class insulation permits operation at elevated temperatures, extending service life under heavy loads
Compact modular construction eases deck installation and routine maintenance
Proven reliability with long intervals between overhauls when matched to standard marine diesel engines
High efficiency (≈96%) reduces fuel consumption and emissions
Integrated vibration‑damping mounts minimise hull stress and improve crew comfort

Weaknesses

IP23 enclosure offers limited protection against water ingress; additional sealing may be required in harsh environments
Large physical size and weight demand substantial structural support and space allocation
If equipped with brushed rotors, regular brush inspection and replacement are necessary
Fixed 690 V output may require step‑up/down transformers for vessels operating on different voltage systems
Higher initial capital cost compared with smaller or lower‑rated generators

Typical Vessels: Container ShipCrude Oil TankerProduct TankerBulk CarrierCruise ShipOffshore Supply Vessel

Certifications: DNV GL Type ApprovalABS Classification Society

Decision Guide: Choose the LSA 50.2 when you need a high‑capacity, thermally robust alternator for vessels with medium‑speed diesel prime movers and can accommodate its size and IP23 rating. Avoid it on small craft, in environments demanding higher ingress protection, or where lower upfront cost is the primary driver.

Use Cases: Commonly installed as the main power source on large commercial ships—such as tankers, container vessels, and cruise liners—to supply shipboard electricity, propulsion auxiliaries, and hotel loads. Also used on offshore support vessels where a reliable, high‑output generator is required for both operational and emergency power.

Datasheet

LSA 50.2 1600kVA 690V 60Hz unverified

· synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1600 kVA) suitable for main propulsion or heavy hotel loads
Insulation class H provides excellent thermal endurance and reliability
Proven Leroy‑Somer design with long service history in marine applications
Modular construction allows relatively easy on‑site maintenance and part replacement
IP23 enclosure meets typical shipboard environmental requirements while keeping cost moderate

Weaknesses

Physical size and weight are substantial, limiting installation in space‑constrained vessels
Rated only for 60 Hz operation; not directly usable on 50 Hz fleets without rewinding
IP23 protection is not fully splash‑proof, requiring careful placement away from direct water exposure
Higher upfront capital cost compared with some lower‑power alternatives
Requires skilled personnel for periodic inspection and maintenance of the synchronous machine

Typical Vessels: Cruise shipOffshore supply vesselLNG carrierRo‑Ro ferryMid‑size container shipNaval auxiliary

Certifications: IMO Type Approval

Decision Guide: Choose if you need a reliable 1600 kVA, 690 V, 60 Hz generator for vessels operating on 60 Hz power systems and can accommodate its size and IP23 rating. Avoid if the ship runs on 50 Hz, has very tight space/weight limits, or requires higher ingress protection (e.g., IP65).

Use Cases: Commonly installed as a main propulsion generator on cruise liners, as an auxiliary power source on offshore support vessels, for hotel‑load generation on LNG carriers, and on naval auxiliaries where dependable high‑power electricity is critical.

Datasheet

LSA 50.2 2000kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2000 kVA in a single unit suitable for main or emergency generation on large vessels.
Class H insulation allows operation at elevated temperatures, improving reliability in harsh marine environments.
IP23 enclosure provides protection against splashing water and dust while allowing easy access for maintenance.
Four‑pole design delivers stable 50 Hz output with low vibration, beneficial for sensitive onboard equipment.
Proven Leroy‑Somer brand reputation for durability and long service intervals.

Weaknesses

Fixed‑speed synchronous operation limits flexibility compared to variable‑speed diesel‑generator sets.
IP23 rating is not fully watertight; unsuitable for locations exposed to heavy spray or immersion.
Physical size and weight can be a constraint on vessels with limited engine‑room space.
No built‑in power electronics (e.g., harmonic filters), requiring additional auxiliary equipment for compliance in some jurisdictions.
Limited availability of spare parts in remote ports compared with more common manufacturers.

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a high‑capacity, robust generator for main or emergency power on large vessels and can accommodate its fixed‑speed, IP23 footprint. Avoid if: space is at a premium, the installation area is subject to heavy spray or immersion, or you require variable‑speed operation or integrated harmonic mitigation.

Use Cases: The LSA 50.2 is typically installed as part of the main power plant on large merchant ships, providing primary electrical supply for propulsion auxiliaries and hotel loads, or as a high‑capacity emergency generator to meet SOLAS requirements. It is also used on offshore platforms where reliable, high‑output power is critical.

Datasheet

LSA 50.2 2000kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 2000 kVA suitable for large hotel and propulsion loads
Class H insulation allows operation at elevated temperatures, enhancing reliability in harsh marine environments
IP23 enclosure provides protection against solid objects and water spray typical on deck installations
Four‑pole design yields a synchronous speed of 1800 rpm at 60 Hz, matching standard marine drive requirements
Leroy‑Somer reputation for robust construction and long service intervals

Weaknesses

Physical size and weight are substantial; may be limiting on vessels with tight machinery spaces
IP23 rating is not fully watertight (e.g., no protection against immersion), requiring careful placement or additional shielding
Fixed 400 V output may necessitate step‑up/step‑down transformers for ships standardized on other voltages
Maintenance of brush‑type exciter (if equipped) adds periodic service tasks

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container ShipsCruise LinersOffshore Supply VesselsLNG/LPG carriers

Decision Guide: Choose if you need a proven, high‑power 2000 kVA generator with robust temperature tolerance for large vessels and have sufficient space for its footprint. Avoid if the installation area is constrained, you require a higher voltage rating (e.g., 660 V) or a fully sealed IP66 enclosure for exposed locations.

Use Cases: Typically installed as the main auxiliary generator on large tankers, container ships, and cruise vessels to supply hotel services, cargo handling equipment, and emergency power. Also used in offshore platforms where continuous high‑capacity power is required.

Datasheet

LSA 50.2 2000kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

2000 kVA output meets the high power demand of large ships
Class H insulation permits higher operating temperatures and longer service life
IP23 enclosure protects against splashing water and dust in shipboard environments
Four‑pole design provides stable 50 Hz frequency with low vibration
Leroy‑Somer reputation for reliability and straightforward maintenance

Weaknesses

Large physical size and weight can limit installation space
Requires dedicated cooling system, increasing maintenance effort
Fixed 50 Hz output is unsuitable for vessels that need dual‑frequency capability
Higher initial capital cost compared with lower‑rated generators
Needs robust vibration isolation due to high power rating

Typical Vessels: Container ShipCrude Oil TankerProduct TankerCruise ShipOffshore Supply Vessel

Decision Guide: Choose if: you require a high‑power (≈2 MW) 50 Hz generator for continuous operation on large vessels and value proven reliability. Avoid if: space or weight constraints are critical, dual‑frequency capability is needed, or budget limits dominate the selection.

Use Cases: Commonly installed as main auxiliary generators supplying propulsion‑related loads, hotel services, and emergency power on large tankers, container ships and cruise liners; also used on offshore platforms for continuous shipboard power supply.

Datasheet

LSA 50.2 2000kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2 MW output in a compact IP23 enclosure
Class H insulation allows operation up to 180 °C, extending service life in hot engine rooms
Four‑pole design provides good low‑speed performance matched to typical marine diesel engines
Proven Leroy‑Somer reputation for reliability and long‑term parts support

Weaknesses

IP23 rating limits protection against water ingress; not suitable for exposed deck installations
Requires a dedicated cooling system (forced air or liquid) – adds installation complexity
Large physical size may restrict fit in smaller vessels or retrofits with limited space
Standard 60 Hz version is less common on vessels operating primarily at 50 Hz

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships >10,000 GTCruise linersOffshore supply vesselsNaval auxiliary ships

Decision Guide: Choose if you need a robust 2 MW generator for large commercial or offshore vessels operating at 60 Hz and can accommodate an IP23‑rated unit with dedicated cooling. Avoid if the installation space is limited, water‑tight protection (IP≥44) is required, or the vessel runs on 50 Hz systems.

Use Cases: Typically installed as the main generator set in large tankers, container ships and cruise vessels to supply shipboard electrical loads, auxiliary propulsion motors, and emergency power. Also used on offshore support vessels where high continuous power and class‑H insulation are advantageous.

Datasheet

LSA 50.2 2000kVA 690V 50Hz unverified

· high‑power marine alternator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

2000 kVA output provides ample auxiliary power for large ships
Class‑H insulation tolerates high operating temperatures, enhancing reliability
Proven Leroy‑Somer design with a long service history in the maritime sector
Modular construction simplifies installation and routine maintenance
Standard 690 V/50 Hz output matches most shipboard electrical systems

Weaknesses

IP23 enclosure offers limited protection against water spray; not suitable for harsh wet‑deck environments without additional shielding
Large physical size and weight require significant space and structural support
Fixed 690 V output may need step‑down transformers for vessels using lower distribution voltages
Requires skilled personnel for commissioning and periodic overhauls
Higher initial capital cost compared with smaller, low‑power generators

Typical Vessels: Cruise shipContainer vesselOil tankerBulk carrierOffshore supply vessel

Certifications: DNV GL approvalABS classification

Decision Guide: Choose if you need a reliable, high‑capacity auxiliary generator (≈2000 kVA) for large vessels with standard 690 V shipboard distribution and can accommodate the unit’s size and IP23 rating. Avoid if space is constrained, a higher protection class (IP66/68) is required, or the vessel operates on lower voltage systems without transformer capacity.

Use Cases: Typically installed as part of the main auxiliary power plant on cruise ships, container carriers, tankers and offshore support vessels to supply hotel loads, cargo handling equipment, and emergency power. Frequently paired with diesel engine sets in a genset room, feeding shipboard switchboards and emergency generators.

Datasheet

LSA 50.2 2000kVA 690V 60Hz unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (≈1800 kW at PF 0.9) suitable for large vessels
H‑class insulation permits higher temperature operation and longer life
Proven reliability from extensive service in cruise ships and offshore platforms
Modular construction simplifies installation and routine maintenance
Designed for 60 Hz systems common in US and many modern fleets

Weaknesses

Large physical footprint and weight require substantial engine‑room space
IP23 rating offers limited protection against water ingress; extra shielding needed in wet zones
Only compatible with 690 V/60 Hz, not suitable for vessels operating on 50 Hz grids
Requires skilled personnel for alignment and periodic inspection
Higher upfront capital cost compared to lower‑rated alternatives

Typical Vessels: Cruise shipLNG carrierOffshore supply vesselRo‑Ro ferryNaval auxiliary ship

Decision Guide: Choose if: you need a high‑capacity (≈2 MVA) generator for a 60 Hz, 690 V shipboard power system and value proven marine reliability with strong after‑sales support. Avoid if: the vessel operates on a 50 Hz grid, space or weight constraints are critical, or a higher IP rating is required without additional enclosures.

Use Cases: Typically installed as the main service generator on large passenger vessels, as auxiliary power for cargo handling equipment on LNG carriers, and as emergency power units on offshore platforms where robust, continuous electricity supply is essential.

Datasheet

LSA 50.2 2500kVA 400V 50Hz unverified

· synchronous marine generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density (2500 kVA at 400 V) suitable for large shipboard loads
H‑class insulation tolerates elevated operating temperatures
IP23 enclosure protects against dust and limited splashing, fitting typical engine‑room environments
Modular design simplifies installation and routine maintenance
Direct compatibility with standard 400 V ship electrical distribution systems

Weaknesses

Low voltage requires large‑section cabling for high currents, increasing installation cost
IP23 rating may be inadequate in harsh offshore spray zones without additional protection
Physical size and weight demand considerable engine‑room space
Requires regular oil lubrication and bearing upkeep (if equipped with oil‑lubricated bearings)
Limited to 50 Hz operation; not suitable for vessels standardized on 60 Hz

Typical Vessels: Cruise shipFerryOffshore supply vesselPlatform support vesselNaval auxiliary ship

Certifications: IEC 60034‑1DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a robust, high‑power generator for a 400 V/50 Hz system and have sufficient engine‑room space; avoid if space is limited, higher IP protection is required, or the vessel operates on 60 Hz.

Use Cases: Commonly installed on large passenger vessels, cruise liners, and offshore platform support ships to supply hotel services, HVAC, and other auxiliary loads from a low‑voltage bus. Also used on floating production units where a compact yet powerful generator is needed for continuous power generation.

Datasheet

LSA 50.2 2500kVA 400V 60Hz unverified

· synchronous alternator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power rating (2.5 MVA) suitable for main‑auxiliary applications
Robust Class H insulation allows operation in harsh temperature environments
Four‑pole design provides stable frequency and low vibration
Proven Leroy‑Somer brand with extensive service network in the marine sector
IP23 enclosure offers protection against dust and limited water spray while allowing easy access for maintenance

Weaknesses

Large physical size and weight may require significant space allocation on board
IP23 rating is not fully splash‑proof; additional sealing may be needed in wet areas
Designed for 60 Hz systems only – derating required for 50 Hz markets
Higher upfront cost compared with some competing manufacturers
Requires external cooling system (air or water) which adds complexity

Typical Vessels: Crude oil tankerProduct tankerContainer shipBulk carrierOffshore supply vesselCruise ship

Certifications: DNV GL Type ApprovalABS ClassificationIMO D‑2 (marine alternator) approval

Decision Guide: Choose if you need a reliable 2.5 MVA auxiliary generator for large vessels, operate in hot climates, and value the Leroy‑Somer service network. Avoid if space is at a premium, you require full splash protection, or your vessel operates on a 50 Hz power system without willing to derate.

Use Cases: Typically installed as part of the main auxiliary power plant on tankers, bulk carriers and cruise ships to supply hotel loads, cargo handling equipment, and emergency power. Also used in offshore support vessels where high‑capacity, robust generation is required for dynamic positioning and drilling operations.

Datasheet

LSA 50.2 2500kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2500 kVA) suitable for large vessel service loads
H‑class insulation allows operation at elevated temperatures, enhancing reliability in harsh marine environments
Four‑pole design provides stable frequency and good efficiency at the standard 50 Hz shipboard frequency
IP23 splash‑proof enclosure protects against water ingress while allowing easy access for maintenance
Leroy‑Somer reputation for long‑life mechanical robustness and proven service support

Weaknesses

IP23 rating offers only limited protection against dust and heavy splashing; not suitable for extremely harsh exposure zones
Fixed 440 V output may require additional transformers or converters on vessels that operate at different voltage levels
Physical size and weight are substantial, impacting installation space and handling requirements
If the unit is brushed (not confirmed), it will need regular brush inspection/replacement
Limited availability of spare parts in remote ports compared with more widely stocked global brands

Typical Vessels: Container shipBulk carrierTankersCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a high‑capacity, reliable generator for large commercial vessels operating on a 50 Hz system and can accommodate the physical footprint. Avoid if: your installation requires dust‑tight protection (IP>23), lower voltage flexibility, or a lightweight compact unit.

Use Cases: The LSA 50.2 is commonly installed as the main propulsion auxiliary generator on large cargo ships, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power when integrated with the vessel's power management system.

Datasheet

LSA 50.2 2500kVA 440V 60Hz unverified

· brushless synchronous generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2500 kVA) suitable for large ship hotel loads
Robust four‑pole design with Class H insulation for reliable operation in hot marine environments
Standard 440 V/60 Hz output matches most vessel electrical systems, simplifying integration
Proven Leroy‑Somer reliability and worldwide service network
Built‑in forced‑air cooling (IP23) provides effective temperature control under load

Weaknesses

IP23 enclosure offers limited protection against water ingress; additional sealing may be required for harsh sea‑water exposure
Physical size and weight are relatively large compared with newer compact generator sets
Requires regular maintenance of the exciter/rotor assembly despite brushless design
Fixed 440 V output limits flexibility for vessels that operate on higher voltage platforms (e.g., 660 V)
Only available at 60 Hz, not suitable for ships standardized on 50 Hz

Typical Vessels: Container shipCruise linerBulk carrierLNG carrierOffshore supply vesselNaval auxiliary ship

Certifications: ABS Type ApprovalDNV Classification

Decision Guide: Choose if: you need a proven, high‑power (2500 kVA) generator that matches the common 440 V/60 Hz marine electrical architecture and you value Leroy‑Somer’s global support. Avoid if: your vessel requires higher voltage platforms, stricter ingress protection (IP66+), or a lighter, more compact unit for limited space.

Use Cases: Typically installed as main auxiliary generators on large commercial vessels to supply hotel loads, emergency power, and propulsion auxiliaries; also used on offshore platforms where reliable high‑capacity electricity is critical.

Datasheet

LSA 50.2 2500kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2500 kVA) at standard shipboard voltage 690 V, suitable for large vessels
Class‑H insulation allows operation at elevated temperatures, enhancing reliability
Modular design simplifies installation and routine maintenance on deck or in engine rooms
4‑pole construction provides 1500 rpm at 50 Hz, enabling direct‑drive configurations without gear reduction
Leroy‑Somer reputation for long‑life bearings and low vibration levels

Weaknesses

IP23 enclosure offers limited protection against water ingress; additional housing may be required in harsh environments
Physical size and weight are substantial, restricting use on vessels with tight space constraints
Higher initial capital cost compared with some lower‑rated or generic alternators
Only 50 Hz frequency option; not suitable for vessels requiring 60 Hz without a converter
Requires dedicated cooling and ventilation system to maintain class‑H temperature limits

Typical Vessels: Bulk CarrierTankerCruise ShipOffshore Supply VesselContainer Ship (large tonnage)

Decision Guide: Choose if: you need a proven, high‑output 2500 kVA generator for 690 V shipboard systems, have space for a large unit, and can provide the required ventilation. Avoid if: installation space is limited, you require higher ingress protection (e.g., IP55), or you operate on a 60 Hz system without frequency conversion.

Use Cases: Typically installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on large commercial vessels; also used in offshore platforms where reliable high‑capacity power is critical.

Datasheet

LSA 50.2 2500kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2.5 MVA) suitable for large ship hotel and propulsion loads
Robust IP23 enclosure provides splash protection in harsh marine environments
Class H insulation permits operation at elevated temperatures, enhancing reliability
Four‑pole design delivers stable 60 Hz frequency with low vibration
Leroy‑Somer brand reputation for durability and long service life

Weaknesses

IP23 rating offers only splash protection; not dust‑tight or fully sealed against harsh weather
Physical size and weight are substantial, requiring dedicated space and mounting provisions
Limited to 60 Hz operation, making it unsuitable for vessels standardized on 50 Hz systems
Requires conventional brush/rotor maintenance (if brushed) or a separate exciter unit, adding complexity
Higher upfront capital cost compared with smaller auxiliary generators

Typical Vessels: Very Large Crude Carrier (VLCC)LNG carrierCruise shipContainer vessel (>5 000 TEU)Offshore supply vesselBulk carrier (large tonnage)

Decision Guide: Choose if: you need a reliable 2.5 MVA auxiliary source for a large 60 Hz ship, have sufficient engine room space, and value proven brand durability. Avoid if: the vessel operates on a 50 Hz electrical system, has strict weight/space constraints, or requires a fully sealed (IP66+) generator.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on large tankers, LNG carriers, cruise ships, and other high‑capacity vessels. Also used in dual‑generator configurations for redundancy.

Datasheet

LSA 50.2 3000kVA 400V 50Hz unverified

· high-speed marine alternator

Power (kVA)

3000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 3 MW in a relatively compact footprint compared with low‑speed units.
Robust H‑class insulation allows operation at elevated temperatures, improving reliability in hot climates.
Four‑pole design provides stable 50 Hz output suitable for most European‑type shipboard electrical systems.
IP23 enclosure offers splash protection while keeping the unit lightweight and easier to install.

Weaknesses

IP23 rating does not protect against dust ingress or heavy spray, limiting use in very harsh marine environments.
Fixed 400 V output may require additional transformers for vessels standardising on higher bus voltages (e.g., 660 V).
High current (≈4.3 kA line) demands oversized cabling and connectors, increasing installation cost.
Designed for 50 Hz only – not suitable where dual‑frequency (50/60 Hz) capability is required.

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a compact, high‑capacity auxiliary generator delivering 3 MW at 400 V/50 Hz with robust temperature tolerance and can accommodate the required cabling. Avoid if: the installation environment demands higher ingress protection (IP≥4X), dual‑frequency operation, or direct integration into a higher‑voltage bus system without additional transformers.

Use Cases: Typically installed as part of a ship's auxiliary power plant to supply main hotel loads, cargo handling equipment, and emergency generators on large commercial vessels. Often paired with medium‑speed diesel engines in dedicated generator sets for continuous operation or redundancy.

Datasheet

LSA 50.2 3000kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

3000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3 MVA) in a compact footprint for 4‑pole design
Robust H‑class insulation suitable for high temperature operation
Standard 400 V/60 Hz rating matches most ship service electrical systems
Proven reliability with decades of service on commercial vessels
IP23 enclosure allows easy access for routine maintenance

Weaknesses

IP23 rating limits installation to dry, well‑ventilated spaces; not suitable for harsh marine exposure
No integrated control or monitoring package – requires external governor and protection system
Relatively heavy compared with newer low‑speed, high‑efficiency generators
Older design may lack the latest IEC 61800‑type power quality features

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IEC 60034‑1ABS approval for marine alternatorsDNV GL classification

Decision Guide: Choose if you need a proven 3 MVA, 400 V/60 Hz generator for standard auxiliary power on vessels with space for an IP23 indoor unit and you have an external control system. Avoid if the installation requires higher ingress protection (e.g., IP55), integrated digital controls, or ultra‑lightweight equipment.

Use Cases: Typically installed as part of diesel‑driven auxiliary generator sets on commercial ships, providing main ship service power, emergency power, and support for hotel loads on cruise vessels and offshore platforms.

Datasheet

LSA 50.2 3000kVA 440V 50Hz unverified

· brushless synchronous marine generator

Power (kVA)

3000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3 MVA) suitable for main propulsion or large auxiliary loads
Brushless design reduces maintenance intervals and eliminates spark‑related hazards
Class H insulation permits operation at elevated temperatures, enhancing reliability in hot climates
IP23 enclosure provides protection against solid foreign objects and water spray typical on deck installations
Proven Leroy‑Somer reputation for durability and long service life

Weaknesses

Large physical footprint and weight require substantial installation space and structural support
Requires dedicated cooling system (forced air or liquid) to maintain temperature limits
Designed for 50 Hz markets only; not directly compatible with 60 Hz regions without redesign
Higher initial capital cost compared with lower‑rated alternators
Integration may need specific Leroy‑Somer control and monitoring electronics

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: DNVABS

Decision Guide: Choose if: you need a reliable 3 MVA auxiliary or main generator for large vessels, require low‑maintenance brushless operation, and operate in hot climates where Class H insulation is advantageous. Avoid if: vessel size cannot accommodate the unit’s dimensions, you are limited to 60 Hz power systems, or budget constraints prioritize lower‑rated generators.

Use Cases: The LSA 50.2 is typically installed as a main propulsion generator on large tankers and container ships, or as a high‑capacity auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on cruise liners and offshore supply vessels.

Datasheet

LSA 50.2 3000kVA 440V 60Hz unverified

· low‑speed marine alternator

Power (kVA)

3000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (3 MVA) suitable for main hotel and emergency loads on large ships
Class H insulation allows operation at elevated temperatures with good thermal endurance
IP23 enclosure provides adequate protection against splashing water in engine rooms while allowing easy access for maintenance
Four‑pole, 1800 rpm design reduces mechanical wear compared with high‑speed units
Leroy‑Somer’s long track record of reliability and worldwide service support

Weaknesses

Large physical footprint and weight require substantial engine‑room space
IP23 rating is not dust‑tight; additional sealing may be needed in harsher environments
Fixed 440 V output may necessitate step‑up transformers for vessels standardising on higher distribution voltages (e.g., 6.6 kV)
Higher initial capital cost compared with smaller, modular generator sets
Cooling requirements are significant; inadequate ventilation can limit overload capability

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier (auxiliary power)

Certifications: IMO D‑2 fire‑protection classificationIEC 60034‑1 (rotating electrical machines) complianceABS approval for marine auxiliary generators

Decision Guide: Choose if you need a proven, high‑capacity 3 MVA generator that fits standard 440 V/60 Hz shipboard distribution and can operate reliably in the warm, humid environment of an engine room. Avoid if vessel design limits space or weight, requires higher voltage output without additional transformers, or operates in environments demanding a fully dust‑tight enclosure (IP54+).

Use Cases: Typically installed as a main auxiliary generator on large ocean‑going vessels to supply hotel services, cargo handling equipment and emergency power. Also used on offshore platforms where a stable 440 V bus is required for pumps, compressors and control systems.

Datasheet

LSA 50.2 3000kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

3000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3 MVA) suitable for large hotel loads or multiple propulsion auxiliaries
Insulation class H allows operation in elevated ambient temperatures common on tropical routes
Robust four‑pole design provides stable frequency and low vibration
IP23 enclosure offers protection against splashing water while allowing easy access for maintenance
Proven Leroy‑Somer reputation for reliability and long service intervals

Weaknesses

Relatively large physical footprint compared with newer compact generator sets
IP23 rating requires adequate ventilation; not fully dust‑tight in harsh marine environments
Standard efficiency (~92 %) is lower than some modern high‑efficiency models that use advanced cooling
Fixed 690 V output may require additional step‑down transformers for vessels with different voltage standards
Limited to four poles – not optimal for ultra‑low‑speed applications where slower speeds are desired

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a proven high‑power auxiliary generator for large vessels, operate in hot climates, and can accommodate the size of a traditional IP23 enclosure. Avoid if: space is at a premium, you require dust‑tight protection, or you are targeting the highest possible efficiency with newer compact designs.

Use Cases: Typically installed as a main hotel‑load generator on large tankers, container ships, and cruise vessels; also used for emergency power supply and to feed propulsion auxiliaries on offshore platforms where robust, high‑temperature capable equipment is essential.

Datasheet

LSA 50.2 3000kVA 690V 60Hz unverified

· low-speed marine alternator

Power (kVA)

3000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Low rotational speed (1500 rpm) matches many diesel main engines – no reduction gear required
Class‑H insulation tolerates high ambient temperatures and overload periods
Robust IP23 enclosure provides protection against splashing water and dust in engine rooms
High short‑circuit rating suitable for emergency power applications
Proven Leroy‑Somer reputation for reliability and long service intervals

Weaknesses

Physical size and weight are larger than high‑speed alternatives, impacting space‑critical installations
Requires dedicated cooling water system; improper flow can limit output
Only rated for 60 Hz – not suitable for vessels operating on a 50 Hz grid
IP23 protection is limited against direct water ingress; additional sealing may be needed in harsh wet zones

Typical Vessels: Cruise shipsProduct tankersLNG carriersOffshore supply vesselsLarge bulk carriers

Decision Guide: Choose if you need a high‑power, low‑speed generator that can be directly coupled to the main engine and operate reliably in hot engine‑room environments. Avoid if vessel space or weight is at a premium, if a 50 Hz system is required, or if only a compact, high‑speed unit will fit.

Use Cases: Commonly installed as an auxiliary generator for hotel load on cruise liners, as emergency power on tankers and offshore vessels, and as part of the main propulsion genset cluster on large cargo ships where direct coupling to low‑speed diesel engines is desired.

Datasheet

LSA 52.3 2500kVA 400V 50Hz unverified

· brushless synchronous generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2500 kVA) suitable for main or auxiliary ship service
Class‑H insulation allows operation at elevated temperatures, extending lifespan
Robust cast‑iron frame and IP23 enclosure provide good mechanical protection in dry spaces
Brushless design reduces maintenance intervals and improves reliability
Four‑pole construction gives stable 50 Hz output across a wide engine speed range

Weaknesses

IP23 rating limits use to dry compartments; not suitable for exposed or wet locations
Large physical size and weight can restrict installation in space‑constrained vessels
Higher initial capital cost compared with lower‑power alternatives
Requires skilled personnel for commissioning and periodic inspection
Fixed 400 V output may necessitate additional transformers on ships that standardise on higher voltages

Typical Vessels: Aframax TankerPanamax Container ShipBulk Carrier (Handymax‑size)Offshore Supply VesselCruise Ship (auxiliary power)

Decision Guide: Choose if: you need a reliable 2500 kVA source for indoor installation, value high efficiency and low maintenance, and the vessel’s electrical system is based on 400 V. Avoid if: space or weight are critical constraints, the generator must operate in wet/exposed areas, or higher voltage (e.g., 660 V) is required without additional transformation.

Use Cases: Typically installed as a main propulsion generator on medium‑size tankers and bulk carriers, as an auxiliary power unit on container ships and cruise vessels, or as a standby/emergency generator on offshore platforms where robust, high‑output power is essential.

Datasheet

LSA 52.3 2500kVA 400V 60Hz unverified

· four‑pole synchronous alternator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2500 kVA) in a compact IP23 enclosure suitable for engine‑room installation
Insulation class H provides excellent thermal endurance for continuous operation
Standard 400 V/60 Hz rating matches common US‑type shipboard distribution systems
Proven Leroy‑Somer reliability and global service network
Four‑pole design yields stable voltage and frequency characteristics

Weaknesses

IP23 protection limits resistance to water spray; not suitable for harsh wet‑deck environments without additional shielding
Designed for 60 Hz only, limiting use on vessels that operate on a 50 Hz system
High rotational speed (1800 rpm) may require more robust cooling and bearing arrangements
Physical size and weight are significant compared with lower‑power units, impacting installation space
May need dedicated control gear compatible with Leroy‑Somer’s excitation system

Typical Vessels: Container shipCruise linerLNG carrierOffshore supply vesselVery large crude carrier (VLCC)Naval auxiliary ship

Decision Guide: Choose this alternator if you need a high‑capacity 2500 kVA generator for a 400 V/60 Hz system, have adequate engine‑room space and can accommodate an IP23 enclosure, and prefer the global support of Leroy‑Somer. Avoid it if your vessel requires 50 Hz operation, higher ingress protection (e.g., IP44 or above), or has strict weight/space constraints that favor a lower‑power unit.

Use Cases: Typically installed as a main or auxiliary generator on large merchant vessels to supply propulsion‑auxiliary power, hotel loads on cruise ships, and emergency power systems on offshore platforms where reliable high‑output electricity is critical.

Datasheet

LSA 52.3 2500kVA 440V 50Hz unverified

· high‑power marine alternator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

2500 kVA output provides ample capacity for large vessel service loads
Robust cast‑iron construction and H‑class insulation give high reliability and long life
Four‑pole design ensures stable 50 Hz operation with good overload capability
Proven Leroy‑Somer brand with extensive global support and spare parts network
Typically certified to DNV/ABS marine standards, facilitating class approval

Weaknesses

IP23 enclosure offers only protection against solid objects; not suitable for wet or corrosive environments without additional shielding
Designed for 50 Hz systems only – unsuitable for vessels operating on a 60 Hz grid
Large physical size and weight may limit installation in space‑constrained engine rooms
H‑class insulation limits maximum temperature to 180 °C, requiring careful thermal management
May require external cooling (air or water) which adds auxiliary system complexity

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vesselsFPSOs

Certifications: DNV GL Marine Generator ApprovalABS Marine Equipment CertificationIMO Type‑Approval (D‑2)IEC 60034 compliance

Decision Guide: Choose if: you need a proven, high‑capacity 2.5 MVA generator for a 50 Hz ship service power system and have sufficient space for a cast‑iron unit with IP23 protection. Avoid if: the vessel operates on a 60 Hz grid, requires higher ingress protection (e.g., IP55), or has severe weight/space constraints.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency power; also used on offshore platforms where robust, low‑maintenance power generation is critical.

Datasheet

LSA 52.3 2500kVA 440V 60Hz unverified

· synchronous marine generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (2500 kVA) suitable for large ship hotel loads and propulsion auxiliaries.
Class H insulation permits operation at elevated temperatures up to ~180 °C, enhancing durability in hot climates.
Four‑pole construction provides stable frequency and lower vibration compared with two‑pole units.
IP23 enclosure offers splash protection while allowing easy access for routine maintenance.
Leroy‑Somer’s long track record of reliability and low total‑ownership cost.

Weaknesses

Physical size and weight are substantial; requires generous engine‑room space and robust mounting.
IP23 rating is only splash‑proof, not dust‑tight – additional protection may be needed in harsh environments.
60 Hz version limits applicability to regions or fleets that standardise on 50 Hz power systems.
Higher cooling‑water flow demand can increase auxiliary pump sizing and maintenance.
Initial capital cost is typically higher than some competing lower‑power units.

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsOffshore supply vesselsLarge container ships

Decision Guide: Choose if you need a robust 2500 kVA generator at 60 Hz, have sufficient engine‑room volume, and value Class H thermal resilience for hot‑climate operations. Avoid if your fleet standardises on 50 Hz systems, space is constrained, or a higher IP rating (e.g., IP55) is mandatory.

Use Cases: Main auxiliary generator supplying hotel loads on cruise liners, emergency power plant on VLCCs and LNG carriers, and secondary propulsion‑auxiliary set on offshore supply vessels where high continuous output and thermal robustness are critical.

Datasheet

LSA 52.3 2500kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high power density (2.5 MVA) suitable for main auxiliary sets on large ships
Robust four‑pole construction with Class H insulation for reliable operation up to 180 °C
IP23 enclosure provides adequate protection for shipboard ventilation while allowing easy access for maintenance
Standard 690 V output matches common marine distribution systems, simplifying integration
Proven Leroy‑Somer design with extensive field service history and optional remote monitoring

Weaknesses

Large physical size and weight require substantial engine room space and strong mounting structures
IP23 rating does not protect against direct water spray; additional sealing may be needed in harsh environments
Fixed 690 V output may necessitate step‑up transformers for vessels that operate on higher bus voltages
Requires a 1500 rpm drive (4‑pole, 50 Hz) limiting compatibility with slower or faster engine speeds

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: DNV GL Marine ClassificationABS (American Bureau of Shipping)LR (Lloyd's Register)

Decision Guide: Choose if you need a proven, high‑capacity auxiliary generator for a large vessel with ample engine‑room space and a 1500 rpm diesel drive. Avoid if the installation is constrained by weight or volume, requires a lower voltage bus system, or operates in environments where higher ingress protection than IP23 is mandatory.

Use Cases: Typically installed as part of a dual‑generator set for main auxiliary power on ocean‑going vessels, providing continuous electricity for hotel loads, cargo handling equipment, and emergency systems. Also used in hybrid propulsion schemes where the alternator supplies electrical power to drive electric motors or shore‑power connections.

Datasheet

LSA 52.3 2500kVA 690V 60Hz unverified

· Four‑pole H‑class marine alternator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2500 kVA) in a relatively compact frame size.
H‑class insulation allows continuous operation up to 180 °C, improving thermal reliability.
IP23 enclosure protects against dust and limited water ingress, suitable for typical engine‑room environments.
Four‑pole design runs at 1800 rpm, reducing bearing wear and mechanical stress compared with higher‑speed machines.
Leroy‑Somer’s modular construction simplifies routine maintenance and spare‑part logistics.

Weaknesses

IP23 rating may be inadequate for harsher marine zones where IP55 or higher is preferred.
Physical size and weight can restrict installation on vessels with limited generator‑room space.
Requires an external cooling system; not a self‑ventilated unit.
Designed for 60 Hz systems only, limiting use on vessels standardized to 50 Hz without additional conversion equipment.
No integrated excitation controller – a separate exciter set is needed.

Typical Vessels: Cruise shipLNG carrierOil tankerLarge bulk carrierOffshore support vessel

Decision Guide: Choose if: you need a high‑capacity (≈2500 kVA) generator for a 60 Hz, 690 V shipboard power system and have sufficient space for an IP23‑rated alternator with external cooling. Avoid if: the installation requires higher ingress protection (IP55+), must operate on a 50 Hz network, or has severe weight/space constraints.

Use Cases: The LSA 52.3 is typically installed as part of a diesel‑generator set in large passenger vessels, LNG carriers and tankers where robust, continuous power for propulsion auxiliaries, hotel loads and emergency systems is critical. It is also used on offshore supply ships that demand high reliability and easy maintenance during extended sea periods.

Datasheet

LSA 52.3 3000kVA 400V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

3000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates the need for regular commutator maintenance.
High efficiency (≈95%) and robust construction suited to continuous operation on large vessels.
Standard 4‑pole, 1500 rpm speed matches most marine diesel prime movers without gear reduction.
Class H insulation allows operation in high‑temperature engine rooms.
Modular mounting options simplify integration into existing generator sets.

Weaknesses

IP23 enclosure provides only limited protection against water spray; additional sealing may be required for very harsh environments.
Physical size and weight are substantial, requiring dedicated space and structural support.
Fixed 400 V output may necessitate step‑up transformers for vessels that standardise on higher bus voltages.
Initial capital cost is higher than smaller, lower‑rated alternators.

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 3 MW brushless alternator for continuous auxiliary power on large vessels and have space for an IP23‑rated unit. Avoid if: the installation requires fully sealed (IP55+) equipment, higher bus voltage without transformers, or strict weight/space constraints.

Use Cases: Commonly installed as part of a diesel‑generator set providing main auxiliary power, emergency standby generation, or shore‑power conversion on tankers, cruise ships and offshore platforms where continuous high‑capacity electricity is required.

Datasheet

LSA 52.3 3000kVA 400V 60Hz unverified

· synchronous marine generator

Power (kVA)

3000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3000 kVA) suitable for large vessel hotel loads and propulsion auxiliaries
Class H insulation allows operation at elevated temperatures, enhancing reliability in hot climates
Proven Leroy‑Somer design with a long service history and widespread parts availability
Modular construction simplifies installation and routine maintenance on board
Standard 4‑pole configuration provides stable 60 Hz output compatible with most shipboard electrical systems

Weaknesses

IP23 rating offers only splash protection; not ideal for dusty or highly corrosive environments without additional shielding
Relatively large footprint compared with newer compact generator designs, affecting space‑critical vessels
Requires an external control/ governor package – the unit is supplied as a bare alternator
Fixed 400 V output may necessitate step‑up/down transformers for vessels standardized on other voltages (e.g., 660 V)
Weight and cooling water requirements can increase auxiliary system complexity

Typical Vessels: Crude oil tankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Certifications: ABS Type ApprovalDNV‑GL Classification

Decision Guide: Choose if you need a proven, high‑capacity generator with robust thermal performance for large merchant or offshore vessels and have space for a standard‑size unit. Avoid if the installation area is severely constrained, requires higher IP protection, or the vessel operates on a voltage system other than 400 V without easy transformer options.

Use Cases: Main power generation set on large cargo ships, auxiliary generators on cruise ships, emergency power plants on offshore platforms, and any application where reliable 3000 kVA output at 60 Hz is required.

Datasheet

LSA 52.3 3000kVA 440V 50Hz unverified

· four-pole synchronous marine alternator

Power (kVA)

3000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 3 MVA suitable for large vessel service loads
Insulation class H provides good thermal tolerance and reliability
Standard 440 V/50 Hz rating matches most diesel engine drives without complex gearing
Robust construction from Leroy‑Somer, a well‑known marine generator supplier
Compact footprint for its power class, facilitating installation in confined engine rooms

Weaknesses

IP23 enclosure offers limited protection against dust and water splashes; additional shielding may be required in harsh environments
Fixed 440 V output may need step‑up transformers for vessels operating at higher distribution voltages
No integrated control or monitoring package – requires external governor/automation system
Designed for 1500 rpm operation (4‑pole, 50 Hz); not suitable for low‑speed prime‑mover applications
Weight and mounting requirements are typical of large alternators and may demand reinforced foundations

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven 3 MVA, four‑pole synchronous generator with standard 440 V/50 Hz output and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (e.g., IP55), integrated control electronics, or operation at lower shaft speeds.

Use Cases: Primary auxiliary power generation for ship service loads such as hotel services, cargo handling equipment, and emergency power; also used in shore‑power conversion sets where a stable 440 V supply is required.

Datasheet

LSA 52.3 3000kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

3000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (3 MVA) suitable for large hotel loads and propulsion auxiliaries
Robust class H insulation and IP23 enclosure provide durability in harsh marine environments
Proven Leroy‑Somer brand with long service history and wide parts support
Modular construction allows relatively easy on‑board maintenance and overhauls
Compatible with standard marine control and protection systems

Weaknesses

Heavy and bulky; requires substantial mounting space and structural reinforcement
IP23 enclosure needs forced ventilation, adding complexity to cooling system design
Rated only for 60 Hz – would need derating or redesign for 50 Hz markets
Higher upfront capital cost compared with some competing manufacturers
Limited overload capability beyond the standard 10% short‑term rating

Typical Vessels: TankerBulk CarrierContainer ShipCruise ShipOffshore Supply VesselLNG Carrier

Certifications: IMO D-2DNVABS

Decision Guide: Choose if you need a reliable 3 MVA, 60 Hz generator for large vessels with ample engine‑room space and require proven brand support. Avoid if the vessel operates on 50 Hz systems, has strict weight/space limits, or seeks a lower‑cost alternative with smaller footprint.

Use Cases: Typically installed as part of the main auxiliary power plant on tankers, bulk carriers and cruise ships to supply hotel loads, cargo handling equipment, and emergency power; also used in propulsion‑auxiliary sets on offshore supply vessels where high continuous output is required.

Datasheet

LSA 52.3 3000kVA 690V 50Hz unverified

Power (kVA)

3000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3000 kVA) in a single unit reduces the number of generators required on large vessels.
Class‑H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms.
Standard 690 V/50 Hz rating matches most marine electrical distribution systems, simplifying integration.
Leroy‑Somer’s global service network provides spare parts and technical support worldwide.

Weaknesses

IP23 enclosure only protects against water spray; additional sealing may be needed for harsher environments.
Physical size and weight are substantial, requiring dedicated space and robust mounting structures.
Fixed 4‑pole design runs at 1500 rpm (50 Hz), which may necessitate gear reduction for slower shaft speeds.

Typical Vessels: Container shipCruise linerLNG carrierOffshore supply vesselDiesel‑electric propulsion vessels

Decision Guide: Choose if: you need a proven, high‑capacity generator at the standard 690 V/50 Hz marine bus with robust temperature tolerance and worldwide support. Avoid if: the installation requires a higher IP rating, tighter space constraints, or variable‑speed operation.

Use Cases: Commonly installed as the main auxiliary generator on large passenger ships for hotel loads, as emergency power sets on tankers, or as part of diesel‑electric propulsion plants where a fixed‑speed high‑output alternator is required.

Datasheet

LSA 52.3 3000kVA 690V 60Hz unverified

· synchronous marine generator

Power (kVA)

3000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3 MVA) in a compact 4‑pole design suitable for large auxiliary sets
Class H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Proven Leroy‑Somer brand reputation for durability and low maintenance on marine installations
IP23 enclosure provides splash protection while keeping the unit relatively lightweight for its class

Weaknesses

IP23 rating is only splash‑proof; not suitable where dust‑tight or higher ingress protection (e.g., IP55) is required
Physical size and weight demand dedicated generator room space on board
Designed for fixed 60 Hz operation – not ideal for vessels that require 50 Hz or variable‑speed drive compatibility
If brush‑type, periodic brush inspection/replacement adds to maintenance workload

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsLarge container vesselsOffshore supply and support vessels

Decision Guide: Choose if: you need a reliable 3 MVA, 690 V auxiliary power source for large vessels operating at 60 Hz and can accommodate an IP23‑rated unit. Avoid if: space is extremely limited, higher ingress protection (IP55/65) is mandatory, or the vessel requires 50 Hz or variable‑speed generation.

Use Cases: Typically installed as part of a ship’s main auxiliary generator set, providing continuous power for hotel loads, cargo handling equipment, and emergency systems on large commercial ships where high‑capacity, stable frequency supply is critical.

Datasheet

LSA 52.3 3500kVA 400V 50Hz unverified

· synchronous marine generator

Power (kVA)

3500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3500 kVA) in a single unit reduces the number of generators needed.
Class H insulation allows operation at elevated temperatures, improving durability in harsh shipboard environments.
IP23 enclosure provides protection against splashing water and limited dust ingress suitable for typical engine rooms.
Four‑pole design runs at 1500 rpm on 50 Hz systems, matching standard marine shaft speeds and simplifying coupling to prime movers.
Proven Leroy‑Somer reputation for reliability and long service intervals.

Weaknesses

Relatively large footprint and weight compared with newer compact generator technologies.
IP23 rating is not fully dust‑tight; additional sealing may be required in very dusty compartments.
If brush‑type, requires periodic brush inspection/replacement versus brushless alternatives.
Fixed 400 V output may need step‑up transformers for vessels operating at higher bus voltages.
Efficiency slightly lower than modern permanent‑magnet or high‑speed diesel‑generator sets.

Typical Vessels: Crude oil tankerProduct tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a robust, high‑capacity 3500 kVA generator with proven marine service history and can accommodate its size and 400 V bus. Avoid if space is at a premium, higher voltage distribution is required without transformers, or a low‑maintenance brushless solution is preferred.

Use Cases: Commonly installed as the main auxiliary generator set for hotel load and propulsion support on large commercial vessels; also used in emergency power arrangements where proven reliability is critical.

Datasheet

LSA 52.3 3500kVA 400V 60Hz unverified

· high-speed marine alternator

Power (kVA)

3500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 3500 kVA in a relatively compact footprint
Class‑H insulation allows operation up to 180 °C, enhancing thermal robustness
Four‑pole design provides stable 60 Hz output with low vibration
IP23 enclosure is suitable for protected engine rooms and reduces maintenance needs
Leroy‑Somer reputation for reliability and long service life in marine applications

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for exposed or wet locations without additional shielding
High‑speed design may generate higher acoustic noise compared with low‑speed generators
Requires a compatible high‑speed diesel engine; not suited for low‑rpm propulsion drives
Standard cooling relies on forced air; performance can drop in very hot ambient conditions

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise liner (hotel load)Ferry

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for vessels with protected engine rooms and can provide a high‑speed diesel drive. Avoid if the installation environment demands higher ingress protection (e.g., IP55+) or if low acoustic noise is a primary requirement.

Use Cases: Commonly installed as an auxiliary/main generator to supply hotel power, cargo handling equipment, and emergency loads on medium‑to‑large commercial vessels where space is at a premium.

Datasheet

LSA 52.3 3500kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

3500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 3.5 MVA suitable for large vessel auxiliaries
Class H insulation provides excellent thermal tolerance and longevity
Proven Leroy‑Somer brand reputation for reliability in harsh marine environments
Modular construction allows relatively easy on‑site maintenance and part replacement
Standard 440 V/50 Hz rating matches most international shipboard electrical systems

Weaknesses

IP23 enclosure offers only limited protection against water spray; additional shielding may be required in very wet or corrosive areas
Physical size and weight are substantial, limiting installation flexibility on smaller vessels
Designed for 50 Hz operation only – not suitable where dual‑frequency (60 Hz) capability is needed
If brush‑type, requires periodic inspection and replacement

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselLNG carrier

Certifications: IMO D-2ABS

Decision Guide: Choose if you need a high‑power (3.5 MVA) auxiliary generator for large vessels, value proven reliability and Class H thermal performance, and operate on a 50 Hz system. Avoid if the installation space is constrained, a higher IP rating (e.g., IP55) is required, or dual‑frequency capability is mandatory.

Use Cases: Typically installed as part of the main auxiliary power plant on large tankers, container ships, cruise vessels and offshore platforms, supplying electricity for hotel services, cargo handling equipment, and emergency generators.

Datasheet

LSA 52.3 3500kVA 440V 60Hz unverified

· Synchronous marine generator

Power (kVA)

3500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3.5 MVA) in a single unit reduces the number of generators needed.
Class H insulation provides excellent thermal endurance for continuous operation.
Four‑pole design yields low vibration and smoother torque on the driven engine.
IP23 enclosure is suitable for typical engine‑room environments while allowing easy access for maintenance.
Widely accepted ABS and DNV type approvals simplify classification approval processes.

Weaknesses

Rated only for 60 Hz; not directly usable in regions standardising on 50 Hz without derating or rewinding.
IP23 protection is not fully splash‑proof, requiring careful placement away from direct water exposure.
External cooling system required, adding to installation complexity and space requirements.
Relatively heavy for its power class (exact weight not disclosed), impacting overall vessel weight budgeting.
Higher upfront capital cost compared with lower‑rated or less robust alternatives.

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: ABS Type ApprovalDNV Classification

Decision Guide: Choose if: you need a proven, high‑output 3.5 MVA generator for 60 Hz vessels, require ABS/DNV approvals, and have sufficient engine‑room space for an external cooling system. Avoid if: the vessel operates in 50 Hz markets, weight or envelope constraints are critical, or a fully splash‑proof enclosure is mandatory.

Use Cases: Typically installed as a main auxiliary generator to supply propulsion‑related hotel loads, emergency power, and shore‑side power generation on large commercial ships and offshore platforms.

Datasheet

LSA 52.3 3500kVA 690V 50Hz unverified

· low-speed marine alternator

Power (kVA)

3500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation allows operation at elevated temperatures, enhancing durability.
Robust 4‑pole design provides stable voltage and frequency under varying loads.
IP23 enclosure offers protection against splashing water and dust typical of shipboard environments.
Widely accepted by classification societies, facilitating type approval and installation.
Standard 690 V output matches common marine bus systems, simplifying integration.

Weaknesses

Large physical footprint and weight require substantial engine‑room space.
IP23 rating limits protection against direct water ingress; may need additional cooling arrangements in harsh climates.
Efficiency drops at low load levels, making it less suitable for vessels with highly variable power demand.
Higher upfront capital cost compared to smaller or modular generator sets.

Typical Vessels: Cruise shipLNG carrierVery Large Crude Carrier (VLCC)Offshore supply vesselLarge container ship

Certifications: DNVABS

Decision Guide: Choose if: you need a proven, high‑capacity auxiliary generator for a large vessel with standard 690 V bus and require classification society approval. Avoid if: space is at a premium, the vessel operates mostly at low loads, or a more compact, higher‑efficiency unit is preferred.

Use Cases: Typically installed as part of the main auxiliary power plant on cruise liners, LNG carriers, and large tankers to supply hotel services, cargo handling equipment, and emergency power; also used in offshore platforms where robust, high‑output generation is essential.

Datasheet

LSA 52.3 3500kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

3500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3500 kVA) suitable for large hotel and propulsion loads
Robust IP23 enclosure provides protection against dust and water spray typical of shipboard environments
Insulation class H allows operation at elevated temperatures, enhancing reliability in hot engine rooms
Designed for easy parallel operation with other generators to meet peak demand
Proven Leroy‑Somer design with long service history on commercial vessels

Weaknesses

IP23 rating is not fully watertight; more exposed than higher IP (e.g., IP54) units
Physical size and weight are larger than newer compact generator sets, impacting installation space
Requires a dedicated prime‑mover engine; cannot operate as a standalone diesel set
Fixed 60 Hz frequency limits use on vessels that standardise on 50 Hz systems
Overload capability is limited by the synchronous design compared with some modern inverter‑driven generators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Certifications: IMO D-2

Decision Guide: Choose if you need a proven, high‑power synchronous alternator for a 690 V/60 Hz shipboard system and already have an appropriate diesel engine prime mover. Avoid if space is at a premium, a higher IP protection rating is required, or the vessel operates on a 50 Hz electrical network.

Use Cases: Typically installed as part of the main auxiliary power plant to supply hotel loads, emergency power, and propulsion support on large commercial ships; often run in parallel with other generators to meet variable demand during port stays and at sea.

Datasheet

Mecc Alte

162

ECO28 50kVA 400V 50Hz unverified

· diesel‑driven alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency design reduces fuel consumption
Compact footprint suitable for limited engine‑room space
Low noise operation typical of the ECO series
H‑class insulation allows higher operating temperatures
Four‑pole construction provides stable 1500 rpm output at 50 Hz

Weaknesses

IP23 enclosure is only splash‑proof; not suitable for harsh outdoor exposure
Power rating (50 kVA) may be insufficient for larger vessels or high hotel loads
Limited marine certification information; may require additional approval for classed ships
Cooling capacity can be challenged in very hot climates without auxiliary ventilation

Typical Vessels: Coastal passenger ferryWorkboat / supply vesselYachtSmall offshore platformRiver cargo vessel

Decision Guide: Choose if: you need a compact, efficient 50 kVA generator for indoor installation on small to medium vessels and value low noise. Avoid if: the installation is exposed to severe weather, higher power output is required, or strict class‑society approval (e.g., DNV‑GL) is mandatory.

Use Cases: Commonly installed as an auxiliary power source for hotel services, navigation equipment, lighting, pumps and emergency backup on coastal ferries, workboats, yachts and small offshore platforms where space is at a premium.

Datasheet

ECO28 50kVA 400V 60Hz unverified

· compact marine alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and low fuel consumption due to optimized design
Compact size with IP23 enclosure fits limited engine‑room spaces
Robust Class H insulation allows operation in high‑temperature environments
Four‑pole construction provides stable frequency and reduced vibration
Proven MeccAlte reliability with long service intervals

Weaknesses

Maximum output of only 50 kVA may be insufficient for larger vessels or heavy hotel loads
IP23 rating protects against splashing water only; not suitable for exposed deck installations
Designed for 60 Hz systems, limiting use on vessels standardized to 50 Hz
No built‑in redundancy; a single unit must be protected by an external backup system

Typical Vessels: Offshore supply vesselCoastal ferryPatrol boatWorkboat / tugYachtSmall tanker or feeder container ship

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if: you need a compact, reliable 50 kVA auxiliary generator for a vessel with limited engine‑room space and can accommodate an IP23 enclosure. Avoid if: higher power output, exposure to harsh weather requiring higher ingress protection (e.g., IP55), or operation on a 50 Hz electrical system is required.

Use Cases: Typically installed as the main auxiliary generator on small to medium offshore vessels, providing hotel load, navigation equipment power, emergency lighting and pump operation. Also used on yachts and patrol boats where space savings and low noise are priorities.

Datasheet

ECO28 50kVA 440V 50Hz unverified

· compact low-noise marine alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption
Compact size and lightweight design saves valuable space onboard
Low acoustic noise level suitable for passenger areas
Robust Class H insulation allows operation in high ambient temperatures
Integrated voltage regulator simplifies installation and maintenance

Weaknesses

Limited to 50 kVA, unsuitable for larger vessels requiring higher power
IP23 enclosure provides only limited protection against water ingress
May need external cooling or ventilation in very hot climates
Higher upfront cost compared with generic off‑the‑shelf alternators

Typical Vessels: Coastal cargo vesselFerryYachtResearch vesselSmall offshore supply vessel

Decision Guide: Choose if: you need a compact, efficient and low‑noise auxiliary generator up to 50 kVA for small‑to‑medium ships with limited installation space. Avoid if: the vessel requires higher power output, a higher ingress protection rating (e.g., IP55), or multiple redundant generators for critical safety systems.

Use Cases: Commonly installed as an auxiliary or standby generator on ferries to supply hotel loads, on research vessels for laboratory equipment, on offshore supply boats for deck machinery, and on yachts for domestic power needs.

Datasheet

ECO28 50kVA 440V 60Hz unverified

· compact high-efficiency marine generator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Small footprint and lightweight design suitable for tight engine rooms or dry‑space installations
High fuel efficiency thanks to an electronic governor and optimized winding geometry
Integrated control panel with built‑in diagnostics reduces wiring complexity
Robust 4‑pole construction provides stable voltage and frequency under varying loads
Insulation class H allows operation in higher ambient temperature zones

Weaknesses

IP23 enclosure offers only protection against solid objects; not suitable for wet or spray‑exposed locations without additional shielding
Maximum output of 50 kVA limits use on larger vessels with high hotel‑load demands
Single‑unit design provides no built‑in redundancy; a failure means loss of auxiliary power until repaired
Limited to 60 Hz operation, which may require frequency conversion for vessels standardized on 50 Hz
Maintenance intervals are typical for brush‑type alternators; not an oil‑free or permanent‑magnet design

Typical Vessels: Coastal cargo shipsOffshore supply vesselsPatrol boatsFishing vesselsYachts and mega‑yachtsWorkboats

Decision Guide: Choose the ECO28 when you need a compact, fuel‑efficient auxiliary generator for vessels with modest power requirements and can provide a dry‑space installation. Avoid it on ships that demand higher output, require water‑tight enclosures, or need built‑in redundancy for critical systems.

Use Cases: The unit is commonly installed in the engine room or dedicated generator compartment to supply hotel loads (lighting, HVAC, navigation equipment), support start‑up of the main propulsion engine, and serve as emergency power under ABS/USCG regulations on small to medium commercial vessels.

Datasheet

ECO28 50kVA 690V 50Hz unverified

· synchronous marine alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and relatively low weight for a 50 kVA unit (ECO series design).
Insulation class H allows operation up to 180 °C, suitable for harsh thermal environments.
IP23 enclosure protects against dust and water spray typical of engine‑room conditions.
Four‑pole construction provides stable 50 Hz output at the standard marine voltage of 690 V.
Mecc Alte reputation for robust, long‑life construction and easy maintenance.

Weaknesses

IP23 rating is not fully watertight; additional protection needed in very wet or corrosive spaces.
Fixed synchronous speed limits flexibility compared with variable‑speed generators.
No integrated control/generator set package – requires external governor and monitoring system.
Limited to 690 V output, so a step‑up transformer is required for higher‑voltage ship systems.
May be heavier than newer oil‑free or permanent‑magnet alternatives of similar rating.

Typical Vessels: FerryRo‑RoCoastal cargo vesselOffshore supply vesselYacht

Decision Guide: Choose if you need a reliable, compact 50 kVA auxiliary generator with high temperature tolerance and standard 690 V marine voltage, and you have space for an external control package. Avoid if the installation requires a fully sealed (IP66+) enclosure, higher output voltage without transformers, or an integrated variable‑speed drive.

Use Cases: Provides shipboard auxiliary power for lighting, navigation electronics, cargo handling equipment, and emergency supply; commonly installed as a standby generator in engine rooms of medium‑size vessels where space is limited.

Datasheet

ECO28 50kVA 690V 60Hz unverified

· brush‑less marine alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) resulting in lower fuel consumption
Compact size and low weight suitable for space‑constrained engine rooms
Robust H‑class insulation allowing operation up to 180 °C ambient
Low vibration and noise due to brush‑less design
IP23 enclosure provides protection against dust and limited splashing, suitable for protected installations

Weaknesses

Limited power output (50 kVA) not adequate for large vessels or high hotel loads
IP23 rating means it must be installed in a dry, ventilated space; unsuitable for exposed deck mounting
Single‑unit configuration offers limited redundancy without an additional set
Spare parts and service network may be less extensive in remote regions

Typical Vessels: YachtCoastal passenger ferryOffshore supply vessel (OSV)Patrol boatResearch / survey vessel

Decision Guide: Choose if you need a compact, high‑efficiency 50 kVA generator for auxiliary power on vessels with limited engine‑room space and moderate load demand. Avoid if the installation requires higher power, full weather protection (IP≥44), or built‑in redundancy.

Use Cases: Provides shipboard electricity for hotel services, navigation equipment, lighting, and emergency power on small to medium craft; typically paired with a diesel engine in a genset configuration and installed in a protected engine‑room area.

Datasheet

ECO28 60kVA 400V 50Hz unverified

· compact marine alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption and emissions
Compact IP23 enclosure saves valuable engine‑room space
Robust H‑class insulation provides long service life in harsh marine environments
Four‑pole design offers smooth output with low vibration
Standard 400 V/50 Hz interface matches most shipboard electrical systems

Weaknesses

Limited power rating (60 kVA) may be insufficient for larger vessels or high hotel loads
IP23 enclosure is not splash‑proof; unsuitable for exposed deck installations
No built‑in redundancy – a second unit required for critical emergency power
Weight and dimensions are higher than some oil‑free screw generators of similar rating

Typical Vessels: Passenger ferryOffshore supply vesselPatrol boatWorkboatYacht

Decision Guide: Choose if: you need a compact, high‑efficiency auxiliary generator up to 60 kVA for vessels with limited engine‑room space and standard 400 V/50 Hz distribution. Avoid if: the vessel requires higher power output, splash‑proof or explosion‑proof enclosures, or built‑in redundancy for emergency power.

Use Cases: Commonly installed as an auxiliary generator to supply hotel loads (lighting, HVAC, navigation equipment) on small passenger ferries and offshore workboats, or as a standby/emergency source on yachts and patrol vessels where space is at a premium.

Datasheet

ECO28 60kVA 400V 60Hz unverified

· brushless marine alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size suitable for limited engine‑room space
High thermal class (H) allows operation in hot climates
Four‑pole design provides stable voltage and frequency output
Robust IP23 enclosure offers protection against splashing water and dust
Widely supported by MeccAlte service network for spare parts and maintenance

Weaknesses

IP23 rating is not splash‑proof for heavy rain or immersion, limiting use in extreme wet zones
Maximum output of 60 kVA may be insufficient for larger vessels with high hotel loads
No integrated sound‑attenuation enclosure; additional muffling may be required for noise‑sensitive applications
Limited to 400 V systems – not directly compatible with higher‑voltage shipboard grids without step‑up transformers

Typical Vessels: Coastal cargo vesselsOffshore supply shipsFerriesPatrol and coast guard boatsLarge yachts and superyachts

Decision Guide: Choose if: you need a reliable 60 kVA auxiliary power source, have limited engine‑room space, operate in warm climates, and can accommodate an IP23 enclosure. Avoid if: the vessel requires higher voltage or power output, demands explosion‑proof or fully splash‑proof protection, or must meet specific certification (e.g., ABS Type Approval) that is not confirmed for this model.

Use Cases: The ECO28 typically powers hotel loads such as lighting, HVAC, galley equipment, navigation electronics, and auxiliary pumps on medium‑size commercial vessels. It is also used to supply emergency power to critical systems when the main plant is offline.

Datasheet

ECO28 60kVA 440V 50Hz unverified

· compact marine alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption and emissions.
Compact size and low weight simplify installation in space‑constrained engine rooms.
Robust class H insulation allows operation up to 180 °C, extending service life.
Four‑pole design provides good overload capability (up to 150% for short periods).
Optional integrated control panel simplifies monitoring and remote diagnostics.

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for heavy spray zones without additional shielding.
Fixed 50 Hz output limits use in regions or vessels that require 60 Hz power.
Maximum continuous rating of 60 kVA may be insufficient for larger hotel‑load ships.
External cooling system required in high ambient temperature conditions, adding complexity.
Spare parts and service network are less widespread than some major OEMs (e.g., Caterpillar).

Typical Vessels: Coastal ferryTugboatOffshore supply vessel (OSV)Medium‑size fishing vesselSmall container or bulk carrier (auxiliary power)

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if: you need a compact, fuel‑efficient 60 kVA generator for 50 Hz operation on vessels with limited engine‑room space and moderate environmental exposure. Avoid if: the vessel requires higher power output, 60 Hz supply, or an enclosure rated above IP23 for harsh spray or immersion conditions.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, navigation equipment, cargo handling gear, and emergency power on coastal ferries, tugs, offshore supply vessels, and medium‑size fishing boats operating in temperate climates.

Datasheet

ECO28 60kVA 440V 60Hz unverified

· oil‑lubricated synchronous generator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and relatively low weight for a 60 kVA unit, easing installation in limited engine rooms.
Class H insulation allows operation at higher temperatures without derating.
Four‑pole construction provides stable frequency output under varying loads.
Oil‑lubricated bearings give long service intervals and simple maintenance.
IP23 enclosure offers basic protection against splashing water, suitable for most marine environments.

Weaknesses

IP23 rating does not protect against dust or heavy spray; unsuitable for harsh offshore exposure without additional shielding.
Maximum output of 60 kVA limits use on larger vessels that require higher auxiliary power.
Oil‑lubricated design generates heat and may need external cooling in continuous high‑load operation.
Noise level can be moderate; may require acoustic insulation in passenger areas.
No built‑in exhaust after‑treatment, so compliance with strict emission zones may need extra equipment.

Typical Vessels: Coastal cargo vesselsOffshore supply shipsCrew boats and ferriesMedium‑size fishing vesselsYachts and luxury tenders

Decision Guide: Choose the ECO28 when you need a reliable, compact 60 kVA auxiliary generator for small to medium vessels with moderate environmental exposure and prefer oil‑lubricated low‑maintenance operation. Avoid it on large tankers, container ships, or in harsh offshore conditions where higher power, stricter IP protection, or advanced emission controls are required.

Use Cases: Typical deployments include supplying hotel loads (lighting, HVAC, galley), powering navigation and communication equipment, providing emergency generator backup for critical systems, and driving cargo pumps on small tankers or offshore support vessels.

Datasheet

ECO28 60kVA 690V 50Hz unverified

· compact marine alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 60 kVA in a relatively small IP23 enclosure
Class H insulation allows operation up to 180 °C, enhancing durability in hot climates
Four‑pole design provides stable 50 Hz output with low vibration
Optimised for fuel efficiency and reduced emissions, suitable for IMO Tier II compliance environments
Standard 690 V bus voltage matches most marine auxiliary power systems

Weaknesses

IP23 rating offers limited protection against water ingress; not suited for harsh wet‑deck installations
Maximum continuous output of 60 kVA may be insufficient for larger vessels requiring higher auxiliary loads
No built‑in redundancy; a single unit failure disables the entire auxiliary power source
Limited to 50 Hz operation, making it unsuitable for vessels that require 60 Hz systems

Typical Vessels: Coastal ferriesOffshore supply vessels (OSV)Patrol and coast guard boatsMedium‑size yachtsResearch vessels

Decision Guide: Choose if: you need a compact, efficient 60 kVA generator for 690 V/50 Hz auxiliary power on small‑to‑medium vessels and the installation environment meets IP23 protection. Avoid if: higher power output, stricter ingress protection (e.g., IP55), or 60 Hz operation is required.

Use Cases: Commonly installed in the engine room of coastal ferries, offshore supply ships, patrol boats and large yachts to supply lighting, navigation equipment, HVAC and other auxiliary loads while the main propulsion plant is offline or during port stays.

Datasheet

ECO28 60kVA 690V 60Hz unverified

· low-speed marine alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (insulation class H) reduces fuel consumption.
Compact size and IP23 enclosure suit vessels with limited engine‑room space.
Four‑pole design provides smooth output at standard 60 Hz frequency.
Robust construction suitable for continuous auxiliary operation.

Weaknesses

IP23 rating offers only limited protection against water ingress; additional housing may be required in harsh environments.
Maximum output of 60 kVA may be insufficient for larger vessels or high‑power emergency loads.
Fixed 690 V output may necessitate step‑up/step‑down transformers on some shipboard systems.
Limited to 4 poles; not optimized for low‑frequency (50 Hz) markets without rewinding.

Typical Vessels: Offshore supply vesselFerrySmall tankerContainer feederCruise ship auxiliaryFishing vessel

Decision Guide: Choose the ECO28 when you need a compact, high‑efficiency 60 kVA alternator for standard 690 V/60 Hz auxiliary power and have space constraints. Avoid it if your vessel requires higher power ratings, fully sealed (IP66+) equipment for severe exposure, or operation at 50 Hz without modification.

Use Cases: Commonly installed as an auxiliary generator on offshore supply vessels, as standby power on ferries and cruise ships, or to provide ship‑board electricity for hotel loads on small tankers and container feeders where space is limited and efficiency is a priority.

Datasheet

ECO28 75kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size suitable for limited engine room space
Class‑H insulation allows operation at elevated temperatures
IP23 enclosure provides protection against dust and spray, adequate for most deck‑level installations
Four‑pole design delivers stable 50 Hz output with low vibration
High efficiency core design reduces fuel consumption of the driven diesel engine

Weaknesses

75 kVA rating may be insufficient for larger vessels or high hotel loads
IP23 is not fully watertight; unsuitable for harsh wet‑deck environments without additional protection
Limited power output restricts simultaneous operation of multiple heavy deck machines
May require a dedicated cooling system in very hot climates
Spare parts and service network can be less extensive than for larger OEM generators

Typical Vessels: Offshore supply vesselFishing vesselCoastal cargo shipPassenger ferry (up to ~200 passengers)Workboat / tug auxiliary power unit

Decision Guide: Choose if you need a compact, efficient auxiliary generator for vessels with modest hotel loads and have space constraints; the class‑H insulation gives extra temperature margin. Avoid if your vessel requires higher continuous power (>100 kVA), fully sealed (IP68) protection, or operation in extremely wet deck locations where water ingress is a concern.

Use Cases: Commonly installed as an auxiliary generator set to supply hotel services (lighting, HVAC, navigation equipment), provide emergency power, and run low‑power deck machinery on offshore support vessels, coastal traders, and passenger ferries operating in temperate climates.

Datasheet

ECO28 75kVA 400V 60Hz unverified

· compact marine alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~95%) reduces fuel consumption and emissions
Integrated control panel with automatic voltage regulation simplifies installation and operation
Compact footprint and IP23 enclosure suit deck or engine‑room mounting where space is limited
Insulation class H provides reliable performance in high‑temperature environments
Four‑pole design ensures smooth output and low vibration

Weaknesses

Maximum output of 75 kVA limits use on larger ships requiring higher hotel load capacity
IP23 protection only guards against splashing water; not suitable for harsh, wet‑deck exposure without additional shielding
Fixed 60 Hz frequency – not a dual‑frequency unit, so unsuitable for vessels operating primarily at 50 Hz
Higher initial purchase price compared with generic industrial alternators of similar rating
External cooling may be required in very hot climates to maintain optimal temperature

Typical Vessels: Offshore supply vesselCrew boatPatrol / coast guard cutterWorkboatTugSmall ferryYacht (large)

Decision Guide: Choose if: you need a reliable, space‑saving auxiliary generator up to 75 kVA with low fuel consumption and built‑in control on a vessel operating at 60 Hz. Avoid if: the required power exceeds 75 kVA, the installation demands higher ingress protection (e.g., IP65), or dual‑frequency capability is required.

Use Cases: Typically installed as the main auxiliary generator on small to medium workboats and offshore support vessels, providing hotel load, deck machinery power, and emergency standby. The integrated control system allows remote monitoring and automatic start/stop based on load demand, making it popular for vessels with limited crew and space constraints.

Datasheet

ECO28 75kVA 440V 50Hz unverified

· brush‑less marine alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for limited engine‑room space
High insulation class H provides good thermal margin
Brush‑less design reduces maintenance and improves reliability
Four‑pole construction gives stable frequency at 50 Hz
IP23 enclosure protects against splashing water in typical marine environments

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh, dusty or heavily sprayed areas
Maximum output of 75 kVA may be insufficient for larger vessels or high hotel‑load demands
Requires separate cooling system (air‑cooled) in hot climates
Limited to 50 Hz operation – not directly compatible with 60 Hz shore power without conversion

Typical Vessels: Coastal cargo shipsFerriesOffshore supply vesselsSmall tankersFishing vesselsYachts

Decision Guide: Choose if you need a reliable, low‑maintenance auxiliary generator in the 50–80 kVA range for vessels with limited engine‑room space and moderate environmental exposure. Avoid if your vessel requires higher protection (IP55/ IP66), power output above 100 kVA, or operation on 60 Hz systems.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, navigation equipment, and emergency power; also used for shore‑power generation on small commercial vessels and large yachts where space and weight are at a premium.

Datasheet

ECO28 75kVA 440V 60Hz unverified

· compact marine alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (typical >92%) reduces fuel consumption for auxiliary loads
Compact IP23 enclosure saves valuable engine room space
Insulation class H allows operation in high‑temperature environments
Four‑pole design provides good low‑speed performance and reduced vibration
Standard 440 V output matches common marine distribution systems

Weaknesses

IP23 rating offers only limited protection against water and dust; not suitable for harsh wet decks without additional shielding
60 Hz version limits use to vessels with US‑type electrical systems
Maximum continuous power of 75 kVA may be insufficient for larger ships or high‑power emergency requirements
Open enclosure requires adequate ventilation and may generate higher acoustic noise compared with fully sealed units

Typical Vessels: Coastal cargo vesselsOffshore supply & workboatsPatrol boatsFerries (short routes)Yachts and luxury crew‑transfer vessels

Certifications: ABS Type ApprovalDNV GL Marine Certification

Decision Guide: Choose if you need a space‑saving, high‑efficiency auxiliary generator for a 60 Hz vessel with moderate power demand and can provide adequate ventilation. Avoid if the installation requires a fully sealed (IP55+) unit, operates on a 50 Hz system, or demands higher continuous output than 75 kVA.

Use Cases: Typically installed as the main auxiliary generator on small to medium offshore supply vessels, patrol craft, and ferries for powering hotel loads, deck machinery, and emergency systems. Also used in retrofit projects where engine‑room space is at a premium.

Datasheet

ECO28 75kVA 690V 50Hz unverified

· brushless alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) resulting in lower fuel consumption
Compact size and low weight compared with equivalent‑rated generators
Robust class‑H insulation suitable for marine temperature ranges
IP23 enclosure simplifies installation while protecting against solid objects
Standard 4‑pole design provides stable 50 Hz output

Weaknesses

Maximum output of 75 kVA limits use on larger ships or high‑power hotel loads
IP23 rating offers limited protection against water spray; additional shielding may be required in harsh environments
Requires an external diesel engine – no integrated prime mover supplied
Limited to 690 V system voltage, not directly compatible with 440 V shipboard standards without transformer

Typical Vessels: Offshore supply vesselCoastal cargo shipFerryYachtPlatform supply vessel

Certifications: IMO D‑2DNV GL Type Approval

Decision Guide: Choose if: you need a reliable, high‑efficiency auxiliary generator up to 75 kVA on a vessel with limited installation space and standard 690 V bus. Avoid if: the ship requires higher power output, operates in very wet conditions without additional enclosure, or uses a different system voltage.

Use Cases: Commonly installed as an emergency/auxiliary generator for hotel load, navigation equipment, lighting, and small dynamic positioning support on offshore platforms and coastal vessels. Also used to supply shore‑power generation on smaller rigs.

Datasheet

ECO28 75kVA 690V 60Hz unverified

· air-cooled marine alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint – suited for limited engine‑room space
IP23 splash‑proof enclosure allows safe deck or engine‑room installation in wet environments
Insulation class H permits operation at higher ambient temperatures without derating
Four‑pole design provides smooth output at the standard 60 Hz frequency used in North America
Low maintenance brushless construction (typical of Mecc Alte ECO series)

Weaknesses

IP23 offers only splash protection; not dust‑tight for harsh offshore environments
Fixed 60 Hz output limits use on vessels that require 50 Hz auxiliary power
75 kVA rating may be insufficient for larger ships with high hotel loads or multiple deck machines
No integrated acoustic silencing – additional mufflers may be required to meet noise regulations
Limited publicly documented type‑approval certifications; verification needed before class society approval

Typical Vessels: Offshore supply vesselCrew boat / workboatPatrol or coast guard cutterFerry (small to medium)Coastal cargo or feeder ship

Decision Guide: Choose this generator when you need a compact, splash‑proof 75 kVA unit for a 60 Hz system on a vessel with limited space and can accommodate external sound attenuation. Avoid it if the installation requires dust‑tight protection, higher power output, 50 Hz operation, or pre‑approved IMO D‑2 / class society type approval without further testing.

Use Cases: Commonly installed as an auxiliary or emergency generator to supply hotel services, lighting, navigation equipment, and start‑up power for the main engine on small to medium offshore and coastal vessels. Its size makes it suitable for deck‑mounted installations where space is at a premium.

Datasheet

ECO28 80kVA 400V 50Hz unverified

· marine alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption
Compact size and low weight simplify installation in limited spaces
Robust H‑class insulation allows operation at higher temperatures
Integrated voltage regulator provides stable output without extra equipment
ABS and DNV type approvals ensure compliance with major classification societies

Weaknesses

IP23 rating only protects against splash; not suitable for harsh, wet environments without additional housing
Maximum output of 80 kVA limits use on larger vessels requiring higher auxiliary power
Four‑pole design fixed at 50 Hz may need conversion for 60 Hz markets
External cooling or ventilation may be required in hot climates
Limited to 400 V system; not directly compatible with higher voltage shipboard grids

Typical Vessels: Coastal passenger ferryOffshore supply vessel (OSV)Patrol boatYacht / super‑yachtWorkboat / tug

Certifications: ABS Type ApprovalDNV Classification

Decision Guide: Choose if you need a compact, high‑efficiency 80 kVA generator for small to medium vessels where space and fuel economy are priorities and the operating environment is not excessively wet. Avoid if the vessel requires higher power output, stricter ingress protection (e.g., IP55), or operation in extreme temperature/humidity conditions without additional enclosures.

Use Cases: Typically installed as the main auxiliary generator on coastal ferries for passenger lighting and HVAC, as a standby emergency source on patrol boats, or as part of the power plant on offshore supply vessels to run deck machinery and accommodation services.

Datasheet

ECO28 80kVA 400V 60Hz unverified

· Marine alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency design reduces fuel consumption
Compact footprint suitable for limited engine‑room space
Class‑H insulation provides good thermal tolerance
Integrated control panel simplifies installation and monitoring
Robust construction typical of Mecc Alte marine units

Weaknesses

IP23 enclosure offers only limited protection against splashing water; not fully weatherproof
Fixed 400 V output may require step‑up/down gear for vessels with different bus voltages
No built‑in redundancy or paralleling capability; additional generators needed for critical loads
Noise attenuation is modest; external silencing may be required in noise‑sensitive installations

Typical Vessels: Offshore supply vesselTugboatWorkboatCoastal cargo vessel

Decision Guide: Choose if you need a reliable 80 kVA source for medium‑size vessels with limited engine‑room space, where a compact IP23 unit and high thermal rating are priorities. Avoid if the installation requires full weatherproofing, built‑in redundancy, or direct integration with bus voltages other than 400 V.

Use Cases: Commonly installed as auxiliary power on offshore supply ships, tugs, and workboats to run hotel loads, navigation equipment, and cargo handling gear. Often paired with diesel engines in a genset configuration for standby or continuous operation.

Datasheet

ECO28 80kVA 440V 50Hz unverified

· high-efficiency marine alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and light weight compared with equivalent‑rated generators
Class H insulation allows higher operating temperatures and longer service life
Four‑pole design provides stable frequency and low vibration
IP23 enclosure offers protection against splashing water, suitable for typical engine rooms
High efficiency reduces fuel consumption and emissions

Weaknesses

IP23 rating does not protect against dust ingress; unsuitable for harsh dusty environments
Limited to 50 Hz operation – not directly compatible with vessels requiring 60 Hz power systems
Maximum output of 80 kVA may be insufficient for larger ships or high‑power hotel loads
No integrated automatic voltage regulator (AVR) – requires separate AVR unit for precise voltage control

Typical Vessels: FerryCoastal cargo vesselOffshore supply boatYacht / superyachtSmall tanker or chemical carrier

Decision Guide: Choose if you need a compact, high‑efficiency auxiliary generator of up to 80 kVA for a 440 V/50 Hz system and value low fuel consumption. Avoid if the vessel requires higher power output, 60 Hz operation, or a higher IP protection class.

Use Cases: Commonly installed as an auxiliary or standby generator on ferries and offshore supply vessels to supply hotel loads, navigation equipment, and emergency power; also used on yachts for onboard electricity generation.

Datasheet

ECO28 80kVA 440V 60Hz unverified

· compact high-efficiency marine alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption and emissions
Compact footprint fits confined engine rooms on small to medium vessels
Robust 4‑pole design delivers stable 60 Hz output under varying loads
Class H insulation permits higher operating temperatures, extending service life
Available with integrated control panels compatible with standard marine automation systems

Weaknesses

IP23 enclosure provides only splash protection; additional shielding may be required in harsh sea conditions
80 kVA rating limits use to auxiliary or standby power on larger ships
Brush‑type construction can demand more frequent maintenance than brushless alternatives
Noise level can be relatively high without dedicated acoustic insulation
Weight-to-power ratio is higher compared with some modern diesel‑generator sets

Typical Vessels: Offshore supply vesselWorkboat / tugCoastal tankerPassenger ferry (small to medium)YachtContainer feeder

Decision Guide: Choose the ECO28 when you need a reliable, high‑efficiency auxiliary generator for vessels with limited engine‑room space and moderate power demand. It is well suited where integration with existing marine control systems is required. Avoid it on large tankers or cruise ships that need higher main‑generation capacity, or in environments demanding full splash‑proof (IP66) or explosion‑proof protection.

Use Cases: The ECO28 is typically installed as an auxiliary generator on offshore supply vessels, workboats, and medium‑size ferries to power hotel loads, emergency systems, and cargo handling equipment. It also serves as a standby generator on yachts and small tankers, providing redundancy for critical electrical services during main engine outages.

Datasheet

ECO28 80kVA 690V 50Hz unverified

· compact marine alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~96%) reduces fuel consumption and emissions
Compact IP23 enclosure saves valuable engine‑room space
Robust H‑class insulation suitable for high temperature operation
Four‑pole design provides stable 50 Hz output with low vibration
Directly compatible with standard medium‑speed marine diesel engines

Weaknesses

IP23 rating offers limited protection against water spray; not suitable for harsh wet environments without additional shielding
Fixed 690 V output may require step‑up transformers on vessels that operate at higher bus voltages
Maximum continuous power of 80 kVA limits use on larger ships requiring higher auxiliary capacity
No built‑in automatic voltage regulator (AVR) – requires external control unit

Typical Vessels: Coastal tankerFeeder container shipOffshore supply vesselFerryMedium‑size cruise ship auxiliaryLarge fishing vessel

Decision Guide: Choose if: you need a compact, high‑efficiency 80 kVA generator for medium‑voltage (690 V) auxiliary power on vessels with limited engine‑room space and moderate environmental exposure. Avoid if: the installation requires IP65 protection, higher bus voltage than 690 V, or continuous power well above 80 kVA.

Use Cases: Typically installed as an auxiliary generator for hotel loads, emergency power supply, or shore‑power conversion on small to medium commercial vessels where space constraints and fuel efficiency are critical.

Datasheet

ECO28 80kVA 690V 60Hz unverified

· compact high-efficiency marine alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal class (H) allows operation in hot engine rooms without derating
Compact IP23 enclosure saves deck space on small to medium vessels
Four‑pole design provides smooth voltage and frequency output
Low fuel consumption thanks to optimized winding and magnetic design
Standard 690 V/60 Hz matches most US‑type marine electrical systems

Weaknesses

IP23 rating offers limited protection against water spray; additional shielding may be required in harsh environments
Only 80 kVA – unsuitable for large vessels or high‑power hotel loads
Designed for 60 Hz only; not directly compatible with 50 Hz installations without a frequency converter
No built‑in acoustic enclosure, so noise mitigation may be needed on quiet platforms

Typical Vessels: Coastal cargo vesselsOffshore supply shipsFerriesPatrol boatsYachts and mega‑yachtsFishing vessels

Decision Guide: Choose if you need a space‑saving, high‑efficiency auxiliary generator of up to 80 kVA for 690 V/60 Hz systems on small‑to‑medium ships. Avoid if the vessel requires higher power output, 50 Hz operation, or a more robust IP55+ enclosure for severe weather exposure.

Use Cases: Typically installed as an auxiliary generator for hotel load, emergency standby power, or propulsion support on offshore supply vessels, ferries and coastal cargo ships where deck space is at a premium and fuel efficiency is critical.

Datasheet

ECO28 100kVA 400V 50Hz unverified

· compact marine alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency design reduces fuel consumption of the driven engine
Compact IP23 enclosure fits tight deck or machinery‑room spaces
Class H insulation allows higher operating temperatures and longer service life
Four‑pole construction provides stable 50 Hz output with low vibration
Standardized 400 V interface matches most shipboard electrical systems

Weaknesses

IP23 rating offers only limited protection against water ingress; not suitable for exposed wet locations
Single frequency (50 Hz) limits use on vessels that require 60 Hz or dual‑frequency capability
Noise level is higher than fully insulated, sound‑proofed generators and may need additional acoustic treatment
Maximum output of 100 kVA may be insufficient for larger ships with high hotel load demand
External cooling system required; no built‑in fan or water‑cooling package

Typical Vessels: Coastal cargo vesselsOffshore supply boatsFerriesPatrol and coast guard craftLarge yachts and superyachts

Decision Guide: Choose if: you need a reliable 100 kVA auxiliary generator that fits in confined spaces, operates on standard 400 V/50 Hz shipboard networks, and you can provide external protection against splash. Avoid if: the installation area is exposed to heavy spray or seawater, the vessel requires dual‑frequency output, ultra‑low noise operation, or power above 100 kVA.

Use Cases: Typically installed as an auxiliary generator for hotel services (lighting, HVAC, navigation equipment) on medium‑size vessels, or as a standby/emergency source where space constraints preclude larger gensets. Frequently paired with diesel engines in the 250–350 kW range to supply continuous power during port stays and at sea.

Datasheet

ECO28 100kVA 400V 60Hz unverified

· brushless alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and low weight suitable for space‑constrained engine rooms
Brushless design reduces maintenance intervals and eliminates brush wear
Class H insulation allows higher operating temperatures, improving reliability in warm climates
Four‑pole construction provides good voltage regulation at 60 Hz
IP23 enclosure offers basic protection against splashing water

Weaknesses

Maximum output of 100 kVA may be insufficient for larger vessels or high hotel loads
IP23 rating does not protect against dust ingress or heavy spray, limiting use in harsh marine environments
Limited overload capability compared with higher‑rated generators
May require external cooling or ventilation in very hot conditions
Control and protection gear are typically supplied separately, adding integration effort

Typical Vessels: Coastal cargo vesselsOffshore supply shipsFerries (short routes)Patrol boatsYachts and mega‑yachtsFishing trawlers

Decision Guide: Choose if you need a reliable, low‑maintenance auxiliary generator in the 80–120 kVA range for vessels with limited engine‑room space and moderate environmental exposure. Avoid if your vessel requires higher power output, a higher IP protection level, or integrated control packages that are not supplied with this model.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply vessels to run hotel services, navigation equipment, and cargo handling gear; also used as emergency power units on ferries and patrol boats where compactness and quick start‑up are valued.

Datasheet

ECO28 100kVA 440V 50Hz unverified

· compact high-efficiency marine alternator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption for auxiliary power.
Compact size and relatively low weight for a 100 kVA unit, saving valuable engine‑room space.
Class H insulation permits higher operating temperatures and improves reliability in hot climates.
Balanced rotor design gives low vibration and noise levels, beneficial for crew comfort.
Standard 4‑pole 1500 rpm speed matches common marine diesel prime movers, simplifying integration.

Weaknesses

IP23 enclosure is only splash‑proof; additional protection needed in harsh wet or corrosive environments.
Fixed 50 Hz output limits use on vessels that operate on a 60 Hz electrical system without frequency conversion.
Designed for constant speed operation; not suited to variable‑speed or hybrid propulsion schemes.
Forced‑air cooling requires regular filter cleaning and can be a maintenance point.
Spare parts distribution may be less extensive than larger OEM brands, potentially affecting lead times.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselFerryOffshore supply vessel

Certifications: IMO Type ApprovalDNV Classification

Decision Guide: Choose if you need a reliable 100 kVA auxiliary generator with a compact footprint, high efficiency and Class H insulation for 50 Hz vessels where space is at a premium. Avoid if the installation requires a higher protection rating (e.g., IP66), operation on a 60 Hz system without converters, or integration into variable‑speed/hybrid power plants.

Use Cases: Commonly installed as the main auxiliary generator for ship services such as lighting, HVAC, cargo handling equipment, and emergency power on medium‑size commercial vessels. Also used as a standby unit in offshore supply ships where space constraints demand a small yet robust alternator.

Datasheet

ECO28 100kVA 440V 60Hz unverified

· diesel generator set

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for space‑constrained engine rooms
High thermal efficiency reduces fuel consumption and emissions
Integrated control system simplifies installation and operation
Class H insulation allows reliable operation in marine temperature ranges
Standard 440 V output matches common shipboard distribution systems

Weaknesses

IP23 enclosure provides limited protection against water ingress; not ideal for harsh wet environments
Fixed 100 kVA rating may be undersized for larger vessels with high hotel loads
Four‑pole design limits flexibility in frequency conversion (fixed at 60 Hz)
Limited documentation publicly available, requiring direct manufacturer liaison for detailed specs

Typical Vessels: Coastal ferriesOffshore supply vesselsSmall tankers (up to ~10 000 DWT)Container ships (feeder class)Yachts and luxury motorboats

Decision Guide: Choose if you need a compact, fuel‑efficient 100 kVA generator for vessels with moderate auxiliary power demand and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), larger power output, or operation in extreme marine environments where stricter certification is mandatory.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, navigation equipment, and cargo handling systems on medium‑size commercial vessels; also used as an emergency standby generator where space and efficiency are priorities.

Datasheet

ECO28 100kVA 690V 50Hz unverified

· brushless marine alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates regular brush maintenance and improves reliability
Compact ECO28 frame fits well in confined engine rooms or aft spaces
Insulation class H allows operation in high‑temperature environments typical on vessels
Four‑pole construction provides stable frequency and good overload capability
IP23 enclosure protects against dust and limited water spray, suitable for most marine conditions

Weaknesses

IP23 rating is not fully watertight; additional shielding may be required in heavy spray areas
No integrated acoustic insulation – external mufflers or enclosures are needed to meet noise limits
690 V output may require a step‑down transformer for ships that standardise on 400 V distribution
Maximum 100 kVA rating can be insufficient for larger vessels with high peak hotel loads
Requires an external cooling system (air or water) – not a self‑contained unit

Typical Vessels: Medium‑size tankerBulk carrierContainer shipOffshore supply vesselFerryCruise ship auxiliary plant

Certifications: DNVABS

Decision Guide: Choose if you need a reliable, low‑maintenance 100 kVA auxiliary generator for a vessel with limited engine‑room space and moderate climate exposure. Avoid if the installation demands a fully sealed (IP≥44) enclosure, integrated sound attenuation, or higher power output than 100 kVA.

Use Cases: Typically installed as an auxiliary generator supplying hotel loads, emergency power, and shore‑power conversion on medium‑size commercial vessels; also used on offshore support ships where space and weight savings are critical.

Datasheet

ECO28 100kVA 690V 60Hz unverified

· brushless alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption for auxiliary loads.
Brush‑less design eliminates regular brush maintenance and extends service intervals.
Robust Class H insulation allows operation in high ambient temperature zones.
Compact IP23 enclosure fits well into limited engine‑room spaces while protecting against splashing water.
Four‑pole construction provides stable 60 Hz output with low vibration.

Weaknesses

IP23 rating does not protect against dust ingress; unsuitable for very harsh marine environments without additional sealing.
Air‑cooled design may limit continuous duty in extremely hot climates without supplemental cooling.
Fixed 690 V output may require step‑up/step‑down transformers for vessels standardized on other voltage levels.
Single unit provides no inherent redundancy; a failure requires standby generator or rapid replacement.
Weight is relatively high compared with newer lightweight aluminum‑frame generators of similar rating.

Typical Vessels: Offshore supply vesselFerry / Ro‑Ro passenger shipMedium‑size container shipBulk carrier (up to 30 kt)Cruise ship auxiliary power system

Decision Guide: Choose the ECO28 when you need a reliable, low‑maintenance 100 kVA source with high thermal tolerance and limited engine‑room space. Avoid it if your vessel requires dust‑tight (IP6X) enclosures, higher voltage outputs, or built‑in redundancy for critical emergency power.

Use Cases: Typical deployments include auxiliary hotel‑load generation on passenger vessels, standby power for cargo handling equipment on bulk carriers, and as a secondary generator on offshore support ships where compactness and low maintenance are priorities.

Datasheet

ECO32 100kVA 400V 50Hz unverified

· synchronous marine generator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint (ECO series) suitable for vessels with limited engine‑room space
Insulation class H allows higher operating temperatures and improves durability
IP23 enclosure provides protection against splashing water and dust in typical shipboard environments
Four‑pole design delivers stable 50 Hz output at the rated voltage
Mecc Alte reputation for robust construction and long service intervals

Weaknesses

IP23 rating is only splash‑proof; harsher marine conditions may require a higher IP enclosure or additional sealing
Fixed 400 V output limits flexibility for vessels that operate on different bus voltages without step‑down/up transformers
May need an external cooling system in high ambient temperature zones, as the unit does not include built‑in forced ventilation
No integrated automatic voltage regulator (AVR) is specified; a separate AVR may be required for tight voltage control

Typical Vessels: General cargo shipsRo‑Ro vesselsOffshore supply vesselsWorkboats and tugboatsSmall passenger ferries

Decision Guide: Choose if you need a reliable 100 kVA auxiliary generator with a compact size, class H insulation and splash‑proof protection for moderate marine environments. Avoid if the installation demands higher ingress protection (IP44 or above), variable voltage output, or an integrated AVR without adding extra equipment.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, lighting, navigation systems, and as standby power on vessels where space is at a premium. Frequently paired with diesel engines in medium‑size offshore support ships and coastal cargo carriers.

Datasheet

ECO32 100kVA 400V 60Hz unverified

· high-efficiency brushless alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency reduces fuel consumption and emissions
Compact size suitable for limited engine room space
Robust H‑class insulation allows operation at elevated temperatures
Low acoustic noise compared with older designs
Mecc Alte’s proven marine reliability and service network

Weaknesses

IP23 enclosure offers only limited water protection; not suited for harsh wet environments without additional shielding
Maximum output of 100 kVA may be insufficient for larger vessels or high‑power demand scenarios
Four‑pole design fixes the operating speed, limiting flexibility with different prime movers
May require an external cooling system in hot climates
Initial purchase price is higher than basic non‑certified generators

Typical Vessels: FerryCoast Guard cutterOffshore supply vesselYachtResearch vessel

Certifications: ISO 8528-2IEC 60034-1ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a compact, high‑efficiency 100 kVA generator for auxiliary power on small to medium vessels where space and fuel economy are priorities. Avoid if the installation requires full water‑tight protection (IP≥44), higher power output, or a lower upfront cost.

Use Cases: Commonly installed as an auxiliary generator set supplying shipboard services such as lighting, HVAC, navigation equipment, and emergency power on ferries, offshore supply ships, yachts, and research vessels operating in coastal or moderate sea conditions.

Datasheet

ECO32 100kVA 440V 50Hz unverified

· brushless marine alternator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and relatively low weight for a 100 kVA unit, saving valuable engine‑room space
High thermal efficiency (~95% at rated load) reduces fuel consumption and emissions
H‑class insulation allows operation at elevated temperatures, improving reliability in hot climates
IP23 enclosure provides protection against solid foreign objects, suitable for protected deck or engine‑room installations
Brushless excitation system minimizes maintenance and extends service intervals

Weaknesses

IP23 rating does not protect against water spray; requires a dry, sheltered mounting location
Fixed 50 Hz output – unsuitable for vessels that operate on 60 Hz without a frequency converter
Single‑unit design offers limited redundancy compared with twin‑generator arrangements
Maximum continuous output of 100 kVA may be insufficient for larger vessels requiring higher auxiliary power
No built‑in sound attenuation; additional muffling may be needed to meet crew comfort standards

Typical Vessels: Offshore supply vesselFerry / Ro‑RoSmall bulk carrier (up to ~10 000 dwt)Container feederYacht or luxury cruiser (as auxiliary generator)

Certifications: IEC 60034‑1 (Rotating electrical machines – General requirements)ISO 8528‑5 (Generator sets – Part 5: Performance testing and rating) IMO MSC.215(84) compliance for marine generator sets

Decision Guide: Choose if you need a space‑efficient, high‑efficiency 100 kVA auxiliary power source on a vessel that can accommodate an IP23‑rated unit in a dry location and operates on 50 Hz. Avoid if the installation requires higher ingress protection (e.g., IP54), 60 Hz output, or built‑in redundancy for critical loads.

Use Cases: The ECO32 is commonly installed as the main auxiliary generator on medium‑size merchant ships and offshore support vessels where engine‑room volume is at a premium. It also serves as an emergency power source on ferries and yachts when paired with battery start systems, providing reliable electricity for lighting, navigation equipment, cargo handling gear, and hotel services.

Datasheet

ECO32 100kVA 440V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption and emissions
Compact footprint suitable for limited engine room space
Class‑H insulation tolerates higher ambient temperatures
Integrated control panel with remote monitoring capability
Proven reliability from MeccAlte’s long‑standing marine portfolio

Weaknesses

IP23 enclosure limits exposure to harsh weather; not suitable for outdoor mounting without additional protection
Limited to 440 V/60 Hz – not directly compatible with vessels requiring 50 Hz or higher voltage systems
Maximum output of 100 kVA may be insufficient for larger ships’ auxiliary loads
No built‑in fuel treatment system; requires separate filtration for low‑sulphur fuels
Spare‑parts availability can depend on regional dealer network

Typical Vessels: Offshore Supply VesselFerryCoastal Container ShipSmall TankerCruise Ship Tender

Certifications: ABS Type ApprovalDNV

Decision Guide: Choose if you need a compact, high‑efficiency 100 kVA auxiliary generator for vessels operating in temperate climates with limited engine‑room space and 60 Hz power systems. Avoid if the installation requires higher voltage, explosion‑proof enclosures, or operation in severe marine environments where IP66 protection is mandatory.

Use Cases: Typically installed as an auxiliary power source on medium‑size commercial vessels to run hotel loads, cargo handling equipment, navigation electronics, and emergency systems when main propulsion generators are offline. Frequently used on offshore supply ships, ferries, and coastal traders where space and fuel efficiency are critical.

Datasheet

ECO32 100kVA 690V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency with low fuel consumption due to modern brushless design
Compact footprint suitable for limited engine room space
Class H insulation allows operation at elevated temperatures, enhancing reliability
IP23 enclosure provides protection against dust and accidental contact in typical marine installations

Weaknesses

IP23 rating does not protect against water ingress; the unit must be installed in a dry location
Fixed 690 V output may require additional step‑up transformers for vessels standardising on higher bus voltages
Limited overload capability compared with larger, purpose‑built generators

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 100 kVA auxiliary power source with a compact, high‑temperature tolerant design for medium‑size vessels and can provide a dry installation space. Avoid if your ship requires higher bus voltage without additional transformers, needs an IP65/66 enclosure for wet locations, or mandates specific IMO D‑2 type approval that is not confirmed for this model.

Use Cases: Commonly installed as part of the ship's auxiliary power plant to supply hotel loads, navigation and communication equipment, cargo handling gear, and emergency power when the main engine is offline.

Datasheet

ECO32 100kVA 690V 60Hz unverified

· compact high‑efficiency marine alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~96%) reduces fuel consumption
Compact size suitable for vessels with limited engine‑room space
H‑class insulation allows higher operating temperatures and longer life
Robust mechanical design with low maintenance requirements
Standard 690 V output matches most shipboard distribution systems

Weaknesses

IP23 enclosure provides only splash protection; not suitable for very harsh wet or dusty environments
Fixed 690 V rating may require additional transformers for vessels using different bus voltages
Maximum continuous power of 100 kVA limits use on larger ships that need higher auxiliary capacity
Initial purchase price can be higher than basic low‑efficiency alternatives

Typical Vessels: FerryCruise ship (hotel load)Offshore supply vesselMedium‑size tankerContainer feederYacht / luxury vessel

Certifications: IEC 60034-1IEC 60034-2-1DNV GL type approval

Decision Guide: Choose if you need a compact, high‑efficiency 100 kVA generator for moderate marine environments and have space constraints. Avoid if the installation requires a higher IP rating (e.g., IP55), operation in extreme corrosive conditions, or power above 100 kVA.

Use Cases: Typically installed as auxiliary or emergency power on medium‑sized passenger vessels, offshore support ships, and yachts to supply hotel loads, navigation equipment, and critical systems. Also used on remote platforms where fuel efficiency and footprint are key.

Datasheet

ECO32 125kVA 400V 50Hz unverified

· compact marine alternator

Power (kVA)

125

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 125 kVA in a relatively small footprint (ECO series design)
Class H insulation allows operation up to 180 °C, improving thermal margin
Four‑pole construction provides good voltage regulation at 50 Hz
IP23 enclosure offers protection against splashing water while keeping the unit lightweight
Designed for low fuel consumption when driven by diesel engines

Weaknesses

IP23 rating is not suitable for harsh, spray‑heavy environments; higher IP ratings are required for many offshore applications
Limited to 50 Hz operation – not directly compatible with vessels that use 60 Hz auxiliary systems
No built‑in redundancy; a single unit must be paired with another generator for critical loads
Maintenance access can be constrained on very tight engine‑room layouts

Typical Vessels: Container ships (auxiliary power)Bulk carriersTanker auxiliary systemsOffshore supply vesselsFerries and Ro‑Ro vesselsLarge yachts

Decision Guide: Choose if: you need a compact, high‑efficiency 125 kVA alternator for a 50 Hz vessel with limited engine‑room space and moderate exposure to water spray. Avoid if: the installation requires IP55/IP68 protection, 60 Hz power, or built‑in redundancy for critical loads.

Use Cases: Typically installed as part of an auxiliary power plant on medium‑size merchant ships and offshore supply vessels, feeding hotel loads, navigation equipment, and emergency systems where space and weight savings are a priority.

Datasheet

ECO32 125kVA 400V 60Hz unverified

· brushless marine alternator

Power (kVA)

125

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~95%) reduces fuel consumption
Compact IP23 enclosure suitable for deck or engine‑room mounting
Brushless design lowers maintenance and improves reliability
Class H insulation permits higher operating temperatures
Four‑pole construction provides stable 60 Hz output

Weaknesses

125 kVA rating may be insufficient for larger ships or high‑power auxiliaries
IP23 protection does not guard against water spray; unsuitable for harsh wet locations
External cooling fan required in hot climates, adding to auxiliary power load
Initial purchase price higher than basic generic alternators
Spare parts and service network may be limited outside Europe

Typical Vessels: Offshore supply vesselCoastal tankerFerryPatrol boatWorkboatYacht

Certifications: IMO D-2

Decision Guide: Choose if you need a compact, high‑efficiency generator around 125 kVA for vessels with limited space and where low maintenance is a priority. Avoid if the vessel requires higher power output, stricter ingress protection (e.g., IP55), or operates in environments with heavy water spray.

Use Cases: Commonly installed as the main auxiliary generator on small to medium offshore supply ships, as an emergency power source on ferries and patrol boats, or as a dedicated generator for hotel loads on yachts and workboats.

Datasheet

ECO32 125kVA 440V 50Hz unverified

· compact high‑efficiency marine genset

Power (kVA)

125

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and low specific fuel consumption for auxiliary power
Compact footprint and integrated control panel simplify installation on limited spaces
Class H insulation allows operation at elevated temperatures, enhancing reliability
IP23 enclosure is suitable for protected indoor or deck‑house locations
Designed for easy maintenance with accessible components

Weaknesses

IP23 rating provides only limited protection against water and dust; not suited for harsh outdoor exposure
May require additional after‑treatment to meet the latest Euro VI emission limits on some vessels
Noise level is moderate; may need extra acoustic insulation in noise‑sensitive areas
Fixed 50 Hz output limits use on vessels that operate on 60 Hz systems without a frequency converter

Typical Vessels: Medium‑size tankersContainer shipsBulk carriersOffshore supply vesselsFerries and cruise ship auxiliary decks

Decision Guide: Choose if: you need a compact, high‑efficiency 125 kVA generator for indoor or protected deck‑house installation, with robust temperature tolerance and straightforward maintenance. Avoid if: the unit must operate in exposed outdoor environments, requires IP55/65 protection, or must meet the strictest latest emission standards without additional after‑treatment.

Use Cases: The ECO32 is typically installed as an auxiliary power source for shipboard hotel loads, cargo handling equipment, and emergency generators on medium‑size commercial vessels where space is at a premium and reliable, efficient electricity is required.

Datasheet

ECO32 125kVA 440V 60Hz unverified

· diesel generator set

Power (kVA)

125

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency core design reduces fuel consumption at rated load
Compact footprint (IP23) suitable for limited engine‑room space
Class H insulation allows operation in hot climates without derating
Four‑pole construction provides stable 60 Hz output with low vibration
Integrated control panel simplifies start‑up, monitoring and maintenance

Weaknesses

IP23 rating offers only limited protection against water spray; not suitable for harsh weather‑exposed installations
Maximum output of 125 kVA may be insufficient for larger vessels or high‑power hotel loads
External cooling system required in very hot ambient conditions, adding installation complexity
Weight and mounting dimensions can be significant for small craft with tight weight budgets

Typical Vessels: Coastal cargo shipsFerriesOffshore supply vesselsSmall tankersYachts and luxury motorboatsPatrol and coast guard cutters

Certifications: ABS Type ApprovalDNV GL ClassificationIMO Type Approval

Decision Guide: Choose if you need a reliable, space‑efficient auxiliary generator up to 125 kVA for vessels with moderate environmental exposure and require high temperature capability. Avoid if the vessel demands higher power output, full weatherproofing (IP55+), or redundant multi‑generator configurations.

Use Cases: Typically installed as the main auxiliary generator on small‑to‑medium sized commercial ships, providing emergency power, hotel services, cargo handling equipment operation and shore‑power support during port stays. Also used on large yachts for continuous hotel load supply.

Datasheet

ECO32 125kVA 690V 50Hz unverified

· brushless marine alternator

Power (kVA)

125

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption of the driven engine.
Brushless construction lowers maintenance requirements and improves reliability.
Compact footprint fits well in limited engine‑room spaces on small to medium vessels.
Robust 4‑pole design provides stable 50 Hz output for standard marine electrical systems.
Complies with IEC/ISO standards, facilitating integration into certified generator sets.

Weaknesses

IP23 enclosure gives only limited protection against water ingress; additional sealing may be required in wet environments.
125 kVA rating is insufficient for large vessels or high‑power demand applications.
Class H insulation limits maximum temperature to 180 °C, necessitating careful cooling in hot climates.
Typically supplied without an integrated automatic voltage regulator, requiring a separate AVR unit.
Fixed 690 V three‑phase output may not match systems that use higher distribution voltages.

Typical Vessels: Offshore Supply VesselCoastal FerryPatrol BoatYachtFishing Vessel

Certifications: IEC 60034-1IEC 60034-2-1DNV GL Type Approval

Decision Guide: Choose if you need a reliable, low‑maintenance alternator for a small to medium vessel with limited engine‑room space and standard 690 V three‑phase distribution. Avoid if the installation requires higher power output, water‑tight enclosures, or operation in extreme ambient temperatures without additional cooling.

Use Cases: The ECO32 is typically installed as part of a diesel‑generator set on offshore supply ships, coastal ferries, patrol boats and large yachts to provide auxiliary power for navigation, communication and hotel loads. Its compact size makes it suitable where space is at a premium, while its brushless design ensures long intervals between overhauls.

Datasheet

ECO32 125kVA 690V 60Hz unverified

· brushless low‑speed alternator

Power (kVA)

125

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless construction eliminates the need for regular brush maintenance.
Low‑speed (1500 rpm) operation reduces mechanical stress on the prime mover.
Class H insulation allows higher operating temperatures and improves reliability.
Compact IP23 enclosure fits well in confined engine‑room spaces.
Four‑pole design provides stable 60 Hz output at standard marine voltage.

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh, dusty or wet environments without additional shielding.
125 kVA may be undersized for large vessels requiring higher auxiliary power capacity.
Limited to 690 V; ships with 440 V or 11 kV distribution systems will need transformers.
Single‑unit design provides no built-in redundancy; a failure requires standby generator.
No integrated fuel‑oil separator; separate filtration may be required for some installations.

Typical Vessels: Offshore supply vesselFerrySmall to medium container shipBulk carrier (up to ~30 kt)Tanker (product or chemical, up to ~30 kt)

Decision Guide: Choose if you need a compact, low‑speed auxiliary generator with high temperature tolerance for vessels up to medium size and can accommodate an IP23 enclosure. Avoid if the vessel requires higher power output, stricter environmental protection (IP44+), or built‑in redundancy.

Use Cases: Typically installed as the main auxiliary generator on offshore supply vessels, ferries, and small cargo ships to supply shipboard electricity for lighting, HVAC, navigation equipment, and hotel services when the main engine is offline.

Datasheet

ECO32 150kVA 400V 50Hz unverified

· brushless marine alternator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 150 kVA in a relatively small footprint
Class H insulation permits operation at elevated temperatures
Brush‑less construction reduces routine maintenance and improves reliability
IP23 enclosure is adequate for typical engine‑room environments
Four‑pole design matches standard low‑speed marine diesel engines

Weaknesses

Only IP23 protection; may need additional shielding in harsh or wet conditions
Fixed 400 V/50 Hz output – no dual‑frequency option
No built‑in redundancy; a separate AVR is required for voltage regulation
Weight can be higher than newer lightweight aluminium alternators

Typical Vessels: Offshore Supply VesselFerryContainer FeederBulk CarrierSmall Tanker

Decision Guide: Choose if you need a compact, high‑temperature tolerant 150 kVA generator for standard 400 V/50 Hz shipboard systems and prefer low maintenance brushless technology. Avoid if the installation requires higher ingress protection (IP≥4X), dual‑frequency capability, or ultra‑lightweight equipment.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size merchant ships to supply hotel load, cargo handling gear, and emergency power. Also used in offshore support vessels where space is limited but reliable, continuous power is essential.

Datasheet

ECO32 150kVA 400V 60Hz unverified

· compact high‑efficiency brushless alternator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~95%) reduces fuel consumption and emissions
Compact size and low weight save valuable engine room space
Brush‑less construction lowers maintenance intervals
Class H insulation tolerates elevated operating temperatures
Integrated control system provides automatic voltage regulation and fault diagnostics

Weaknesses

IP23 enclosure offers limited protection against water ingress; additional sealing may be required in harsh marine environments
Maximum output of 150 kVA may be insufficient for larger vessels or high‑power auxiliary loads
Air‑cooled version can generate noticeable noise compared with liquid‑cooled alternatives
Standard model does not include built‑in redundancy features (e.g., dual windings) found on some higher‑end generators
Spare parts and service support are regionally concentrated, potentially affecting lead times

Typical Vessels: Offshore supply vesselCoastal tankerFerrySmall container shipYacht / luxury cruiserFishing vessel

Decision Guide: Choose if you need a space‑saving, high‑efficiency generator up to 150 kVA with integrated control and can accommodate an IP23 enclosure or add extra protection. Avoid if the installation demands higher power output, fully sealed (IP55+) enclosures for extreme exposure, or built‑in redundancy for critical emergency power.

Use Cases: Commonly installed as auxiliary generators for ship service loads such as lighting, HVAC, cargo handling equipment, and navigation systems; also used as standby/emergency generators on vessels where space is at a premium.

Datasheet

ECO32 150kVA 440V 50Hz unverified

· compact diesel-driven alternator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~95%) reduces fuel consumption on board.
Compact footprint and relatively low weight compared with other 150 kVA generators.
Class H insulation allows operation at elevated temperatures (up to 180 °C).
Integrated control panel with built‑in protection functions (overload, over/under voltage, frequency monitoring).
Meets IMO Tier II emission limits for diesel generators of this size.

Weaknesses

IP23 enclosure is only splash‑proof; the unit must be installed in a protected space.
150 kVA output may be insufficient for larger vessels or high‑power auxiliary loads.
Noise level can be moderate to high without additional acoustic enclosures.
Diesel‑only fuel source limits use in hybrid or LNG‑powered ships.
Spare‑parts logistics are strongest in Europe; availability may be limited elsewhere.

Typical Vessels: Coastal cargo vesselsFerriesOffshore supply vessels (OSV)Fishing vesselsYachts and luxury tendersSmall tankers

Certifications: DNVABS

Decision Guide: Choose the ECO32 150 kVA when you need a compact, efficient diesel generator for vessels up to medium size that can be installed in a sheltered engine room and where IMO Tier II compliance is required. Avoid it on large ships with high power demand, in exposed deck installations, or when a low‑noise or hybrid solution is mandatory.

Use Cases: Typically fitted in the engine rooms of coastal traders, ferries, offshore supply boats, and larger yachts to supply hotel loads, navigation equipment, and auxiliary machinery. It is also used as a standby generator on small tankers where space constraints favor its compact design.

Datasheet

ECO32 150kVA 440V 60Hz unverified

· brushless marine alternator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption for auxiliary loads.
Compact IP23 enclosure saves space in engine rooms.
Class H insulation allows operation at elevated temperatures.
Four‑pole design provides stable 60 Hz output with low vibration.
Integrated voltage regulator simplifies installation and maintenance.

Weaknesses

Maximum rating of 150 kVA may be insufficient for larger ships or high‑power hotel loads.
IP23 protection does not guard against water ingress; unsuitable for wet locations without additional shielding.
Limited redundancy – a single unit must be backed up by an extra generator for critical applications.
External cooling may be required in hot climates, adding to system complexity.
Spare parts and service network can be less extensive than those of larger OEMs.

Typical Vessels: Offshore Supply VesselCoastal Cargo ShipFerryResearch VesselYacht

Decision Guide: Choose if you need a compact, high‑efficiency auxiliary generator up to 150 kVA for vessels with limited engine‑room space and moderate environmental exposure. Avoid if the installation requires water‑tight protection, higher power output, or built‑in redundancy for critical safety systems.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply ships, ferries, and research vessels to run hotel loads, navigation equipment, and cargo handling gear. Also used on large yachts where space savings and low fuel consumption are priorities.

Datasheet

ECO32 150kVA 690V 50Hz unverified

· air-cooled synchronous alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature environments
Compact size suitable for limited engine room space
Standard 690 V three‑phase output matches common marine generator sets
Four‑pole design provides stable frequency at 50 Hz
Proven MeccAlte reliability with long service life

Weaknesses

IP23 enclosure offers only limited protection against water and dust; additional sealing may be required for harsh sea conditions
Maximum continuous rating of 150 kVA limits use on larger vessels or high‑power applications
Requires external cooling/ventilation to maintain temperature within class H limits
No built‑in harmonic filtering, so downstream power quality equipment may be needed

Typical Vessels: Coastal cargo vesselOffshore supply boatFerryPatrol / security craftLarge yacht or superyachtFishing trawler

Decision Guide: Choose if you need a compact, reliable 150 kVA alternator for a vessel with standard 690 V 50 Hz generator sets and can provide adequate ventilation and protection against the elements. Avoid if the installation requires higher ingress protection (e.g., IP54 or better), larger power output, or integrated cooling solutions.

Use Cases: Typically installed as the main or auxiliary alternator in small‑to‑medium sized marine diesel generator sets, providing hotel load power, emergency standby generation, and support for propulsion auxiliaries on coastal and offshore vessels.

Datasheet

ECO32 150kVA 690V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and high power density suitable for vessels with limited space
Class H insulation allows operation at higher temperatures, improving reliability in hot climates
Standard 690 V output matches common shipboard distribution systems
Four‑pole design provides stable frequency at 60 Hz with proven mechanical robustness

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh wet environments without additional shielding
High‑speed operation can lead to increased bearing wear compared with low‑speed generators
No integrated control panel – requires separate governor and monitoring equipment
Limited to 150 kVA, so may be undersized for vessels with large hotel loads or propulsion assist needs

Typical Vessels: Container shipBulk carrierTankerCruise liner (hotel load)Offshore supply vesselFerry

Decision Guide: Choose if: you need a compact, high‑efficiency auxiliary generator in the 100–200 kVA range for vessels with standard 690 V distribution and can provide adequate ventilation and splash protection. Avoid if: the installation requires higher ingress protection (IP55 or above), integrated control electronics, or power ratings beyond 150 kVA.

Use Cases: Typically installed as an auxiliary generator to supply hotel services, emergency power, or propulsion‑assist on medium‑size merchant ships and offshore platforms where space is at a premium and standard marine voltage is required.

Datasheet

ECO32 175kVA 400V 50Hz unverified

· brushless synchronous marine generator

Power (kVA)

175

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption for auxiliary power.
Brush‑less design lowers maintenance requirements and improves reliability.
Compact IP23 enclosure saves space in engine rooms while protecting against splashing water.
Class H insulation allows operation at elevated temperatures up to 180 °C.
Four‑pole construction delivers stable 50 Hz output suitable for most shipboard electrical systems.

Weaknesses

IP23 rating provides only splash protection; not suitable for dusty or heavily sprayed environments without additional shielding.
May require an external cooling system in very high ambient temperature conditions.
Short‑circuit current rating is lower than larger generators, limiting use on vessels with very high peak loads.
No integrated fire‑suppression system; auxiliary safety equipment must be installed separately.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselFerry

Certifications: IMO D-2

Decision Guide: Choose the ECO32 when you need a compact, high‑efficiency 175 kVA auxiliary generator for vessels with standard 400 V/50 Hz systems and moderate environmental exposure. Avoid it if the installation requires higher ingress protection (IP55 or above), very high short‑circuit ratings, or built‑in fire‑suppression.

Use Cases: The ECO32 is typically installed in engine rooms of medium‑size merchant vessels to supply hotel loads, navigation equipment, and emergency power. It is also used on offshore support ships where space is at a premium and reliable, low‑maintenance auxiliary generation is essential.

Datasheet

ECO32 175kVA 400V 60Hz unverified

· brushless marine alternator

Power (kVA)

175

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact IP23 enclosure saves valuable engine‑room space
Brushless design provides low maintenance and high reliability
High efficiency (≈95%) reduces fuel consumption and emissions
Class H insulation allows operation at elevated temperatures
Integrated control panel simplifies installation and monitoring

Weaknesses

IP23 rating offers limited protection against dust and water ingress; not suitable for harsh, wet environments without additional shielding
Maximum output of 175 kVA may be insufficient for larger vessels with high hotel loads
Requires external cooling (air or water) in hot climates
Higher upfront cost compared to basic non‑brushless generators of similar rating
Designed for 60 Hz only; not directly interchangeable on 50 Hz systems without derating

Typical Vessels: Container ships (up to 5,000 GT)Bulk carriersTankersCruise liners and ferriesOffshore supply vesselsLarge fishing vessels

Decision Guide: Choose if you need a space‑saving, high‑efficiency auxiliary generator in the 150–200 kVA range for 400 V/60 Hz systems and can accommodate an IP23 enclosure. Avoid if your vessel requires higher power output, operation in hazardous or heavily wet areas, or strict explosion‑proof certifications.

Use Cases: Typically installed as a main auxiliary generator on medium‑sized merchant ships to supply propulsion auxiliaries, hotel services, and emergency loads; also used as a standby unit on vessels where redundancy is required but space is limited.

Datasheet

ECO32 175kVA 440V 50Hz unverified

· compact marine alternator

Power (kVA)

175

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency reduces fuel consumption
Compact footprint suitable for limited engine room space
H‑class insulation allows operation at elevated temperatures
Four‑pole design provides smooth, low‑ripple output
IP23 enclosure offers protection against water spray and accidental contact

Weaknesses

IP23 rating does not protect against dust or heavy splashing; unsuitable for harsh offshore exposure without additional shielding
Limited to 50 Hz operation, which may restrict use in regions requiring 60 Hz
Maximum output of 175 kVA may require multiple units on larger vessels
Air‑cooled version can be noisier than water‑cooled alternatives
No integrated sound attenuation enclosure; additional silencing measures may be needed

Typical Vessels: Offshore supply vesselCoastal cargo shipFerryPatrol boatYachtSmall tankerContainer feeder

Decision Guide: Choose if you need a reliable, space‑saving auxiliary generator in the 150–200 kVA range with good thermal performance and can accommodate an IP23 enclosure. Avoid if your vessel operates in harsh, dusty or heavily splashed environments, requires 60 Hz power, or needs higher power output from a single unit.

Use Cases: Commonly installed as the main auxiliary generator for hotel load on medium‑size vessels, as a standby emergency power source, or as part of a redundant generator set to meet SOLAS requirements on offshore and coastal ships.

Datasheet

ECO32 175kVA 440V 60Hz unverified

· compact marine alternator

Power (kVA)

175

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (≈95%) reduces fuel consumption.
Compact footprint and relatively low weight simplify installation on space‑constrained vessels.
Robust H‑class insulation provides good temperature tolerance.
Integrated automatic voltage regulator ensures stable output without external devices.
Four‑pole design offers smooth torque and lower vibration.

Weaknesses

IP23 enclosure only protects against solid objects >12.5 mm; no protection against water spray or immersion.
Maximum continuous rating of 175 kVA limits use on larger vessels requiring higher power reserves.
Noise level can be higher than larger, slower‑running generators, potentially needing additional acoustic treatment.
Limited overload duration compared with heavier‑duty units.
May require auxiliary cooling in very high ambient temperatures.

Typical Vessels: Offshore supply vesselFerryCoastal cargo shipYacht / superyachtSmall container or bulk carrier

Decision Guide: Choose if you need a compact, high‑efficiency generator around 175 kVA for vessels with limited engine‑room space and moderate power demand. Avoid if the installation requires higher ingress protection (IP44+), larger continuous power output, or ultra‑quiet operation.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply ships, as a secondary/backup source on ferries, or as the primary generator on large yachts where space and weight savings are critical. Also used in retrofits where existing engine rooms cannot accommodate larger units.

Datasheet

ECO32 175kVA 690V 50Hz unverified

· compact marine alternator

Power (kVA)

175

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption for auxiliary loads
Compact footprint fits into confined engine‑room spaces
H‑class insulation allows operation at elevated temperatures
Integrated voltage regulator simplifies installation and commissioning
Brushless design (where applicable) lowers maintenance requirements

Weaknesses

IP23 enclosure offers only limited protection against water ingress
External cooling water system required, adding piping complexity
Weight is relatively high compared with newer permanent‑magnet units of similar rating
Designed for 50 Hz markets only; not directly compatible with 60 Hz regions without derating
No built‑in redundancy; a second unit needed for full emergency power compliance

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable, high‑efficiency auxiliary generator in the 150–200 kVA range and have space constraints; you operate in a 50 Hz market and can accommodate an IP23 enclosure with external cooling. Avoid if: you require full splash‑proof protection (IP65+), operation at 60 Hz, or a lightweight solution without external water cooling.

Use Cases: Typically installed in the main engine room to supply hotel loads, cargo handling equipment, and emergency power on medium‑size commercial vessels; also used as a standby generator for critical navigation and safety systems.

Datasheet

ECO32 175kVA 690V 60Hz unverified

· marine alternator

Power (kVA)

175

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation at elevated temperatures without derating.
Compact footprint suitable for limited engine‑room space.
Four‑pole design delivers stable 60 Hz output at 1500 rpm, matching US‑type main engines.
IP23 enclosure protects against solid objects and spray water, adequate for typical engine‑room environments.
Proven Mecc Alte reputation for durability and low maintenance.

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh corrosive or high‑spray areas where IP55+ is required.
Fixed 690 V output may require additional transformers for vessels standardized on other voltages.
No built‑in automatic voltage regulator (AVR) – an external AVR must be specified for full load regulation.
Power rating (175 kVA) may be insufficient for larger ships with high hotel loads or DP requirements.

Typical Vessels: Coastal tankersContainer feeder vesselsOffshore supply & utility vesselsFerriesMedium‑size fishing vessels

Decision Guide: Choose this generator if you need a mid‑range (≈175 kVA) auxiliary power source with high thermal endurance, compact size and 60 Hz operation for US‑type fleets, and the engine‑room environment meets IP23 protection. Avoid it when higher ingress protection (IP55/65), built‑in AVR, or a different voltage rating is mandatory.

Use Cases: Typically installed as an auxiliary or emergency generator to supply hotel services, cargo handling equipment, navigation systems, and lighting on medium‑size commercial vessels operating in US waters. Also used on offshore support ships where space constraints favor compact units.

Datasheet

ECO32 200kVA 400V 50Hz unverified

· low-speed high-efficiency marine alternator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (≈95%) reduces fuel consumption and emissions.
Class H insulation permits operation at elevated temperatures without derating.
Compact footprint and low rotational speed lower vibration and noise levels.
Integrated control panel simplifies installation and monitoring.
Standard 400 V/50 Hz output matches most European‑type ship electrical systems.

Weaknesses

IP23 enclosure provides only limited protection against water ingress; not ideal for harsh, wet deck environments.
Maximum rating of 200 kVA limits use on larger vessels requiring higher power reserves.
Fixed 400 V output may require additional transformers for ships using 660 V or other voltage schemes.
Low‑speed design can result in a larger diameter rotor compared with high‑speed alternatives.

Typical Vessels: Offshore supply vesselCoastal tankerFerrySmall container shipYacht / luxury cruiser

Decision Guide: Choose if you need a compact, fuel‑efficient generator for vessels with moderate power demand and standard 400 V/50 Hz distribution, especially where low noise and vibration are priorities. Avoid if the installation requires higher ingress protection (IP55+), larger power output (>200 kVA), or non‑standard voltage configurations.

Use Cases: The ECO32 is commonly installed as the main auxiliary generator on offshore supply ships, ferries, and medium‑size coastal vessels, providing reliable electricity for hotel loads, navigation equipment, and cargo handling systems while keeping fuel consumption low.

Datasheet

ECO32 200kVA 400V 60Hz unverified

· marine alternator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency design reduces fuel consumption for auxiliary loads.
Compact footprint (IP23) saves space in engine rooms of medium‑size vessels.
Class‑H insulation allows operation at elevated temperatures, enhancing durability.
Four‑pole construction provides stable 60 Hz output suitable for US/Asian markets.
Widely accepted by classification societies, facilitating installation approvals.

Weaknesses

IP23 rating only protects against splashing water; not suitable for harsh spray or dust environments.
Requires an external cooling system (water‑cooled), adding complexity to the installation.
Limited to 400 V output; may need additional transformers for vessels requiring higher bus voltages.
No integrated engine; a separate prime mover must be supplied, increasing overall system size.
Maximum continuous rating of 200 kVA may be insufficient for larger vessel auxiliary power demands.

Typical Vessels: Container ships (up to 5,000 TEU)General cargo vesselsFerries and Ro‑Ro shipsOffshore supply vesselsCruise ship auxiliary generators

Certifications: ABSDNV GL

Decision Guide: Choose if you need a compact, high‑efficiency 200 kVA generator for 60 Hz vessels with moderate environmental exposure and you have space constraints. Avoid if the installation requires higher ingress protection (IP55+), integrated engine‑generator sets, or power ratings above 200 kVA.

Use Cases: The ECO32 is typically installed as an auxiliary generator on medium‑size merchant ships to supply hotel loads, emergency power, and shore‑power conversion. It is also used in retrofit projects where space savings are critical and the vessel operates primarily in 60 Hz regions.

Datasheet

ECO32 200kVA 440V 50Hz unverified

· brushless synchronous generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption and emissions
Compact, low‑profile design saves engine‑room space
Class H insulation allows higher temperature operation for better reliability
Integrated digital control panel simplifies start‑up, monitoring and protection
Four‑pole construction provides stable 50 Hz output suitable for most European‑type vessels

Weaknesses

IP23 enclosure offers only limited dust protection; not suited for harsh external environments
Fixed 440 V/50 Hz rating limits use on vessels requiring 60 Hz or other voltage configurations
May require separate cooling system in high ambient temperature conditions
Initial purchase price is higher than comparable conventional generators
Spare‑parts logistics can be slower outside the European market

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vesselCoastal passenger liner

Decision Guide: Choose if you need a mid‑size (≈200 kVA) auxiliary generator with high efficiency, compact footprint and integrated control for vessels operating on 50 Hz systems. Avoid if the installation requires a higher protection rating (IP55 or above), 60 Hz operation, or if budget constraints favour lower‑cost conventional units.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel loads, navigation equipment and cargo handling gear on medium‑size merchant ships; also used as an emergency standby unit on offshore platforms where space and fuel efficiency are critical.

Datasheet

ECO32 200kVA 440V 60Hz unverified

· brushless marine alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency brushless design reduces maintenance and downtime
Compact IP23 enclosure fits well in limited engine‑room spaces
Class‑H insulation allows higher temperature operation and longer life
Four‑pole construction provides stable 1500 rpm operation at 60 Hz
Proven Italian engineering with a reputation for reliability

Weaknesses

IP23 rating offers limited protection against heavy water ingress; may need extra shielding in wet environments
200 kVA output may be undersized for larger vessels or high‑power emergency requirements
Weight can be higher than some modern lightweight alternatives
Limited to 60 Hz systems, not directly suitable for 50 Hz regions without redesign
Spare parts availability depends on regional MeccAlte service network

Typical Vessels: Offshore Supply VesselCoastal FerrySmall TankerContainer FeederYacht / Luxury Cruiser

Decision Guide: Choose if you need a compact, low‑maintenance 200 kVA generator for vessels operating in moderate marine environments and value proven brushless technology. Avoid if the installation requires higher IP protection, larger power output, or strict weight constraints.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size offshore supply ships, ferries, and coastal cargo vessels, or as a backup emergency generator where space is at a premium.

Datasheet

ECO32 200kVA 690V 50Hz unverified

· compact marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈94%) reduces fuel consumption for auxiliary loads
Compact IP23 enclosure saves valuable engine room space
Robust Class H insulation allows operation in high ambient temperatures
Four‑pole design provides stable 50 Hz output at 690 V
Standardized control interface compatible with most shipboard power management systems

Weaknesses

Maximum rating of 200 kVA limits use on vessels requiring larger auxiliary sets (>250 kVA)
IP23 enclosure offers only limited protection against water ingress; extra shielding may be needed in harsh sea conditions
Air‑cooled design can be sensitive to very high ambient temperatures or restricted airflow
Spare parts and service support are region‑dependent, potentially increasing lead times outside Europe
No built‑in redundancy; a second unit is required for critical emergency power

Typical Vessels: TankerContainer shipBulk carrier (up to ~30 000 dwt)Offshore supply vesselFerryNaval auxiliary

Certifications: DNV‑GL Type ApprovalABS Classification

Decision Guide: Choose if: you need a reliable, space‑saving 200 kVA generator for hotel load or emergency power on medium‑size merchant vessels and can accommodate an air‑cooled, IP23 unit. Avoid if: the vessel requires higher auxiliary capacity, operates in environments demanding higher ingress protection (e.g., IP55) or water‑cooled units, or mandates built‑in redundancy without a second generator.

Use Cases: Typically installed as one of two or three auxiliary generators on tankers, container ships and offshore supply vessels to supply hotel services, cargo handling equipment, and emergency power. Also used on ferries and naval support ships where compactness and fuel efficiency are priorities.

Datasheet

ECO32 200kVA 690V 60Hz unverified

· brushless alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~95%) reduces fuel consumption
Compact footprint suitable for limited engine‑room space
Insulation class H allows operation at elevated temperatures
Low vibration and noise due to brushless design
Integrated voltage regulation simplifies installation

Weaknesses

IP23 enclosure offers only basic protection against splashing water, not dust or heavy spray
Maximum output of 200 kVA may be insufficient for larger vessels requiring higher auxiliary power
Requires external cooling in very hot climates to maintain temperature limits
Standard voltage 690 V may need step‑down transformers for systems using other nominal voltages

Typical Vessels: Offshore supply vesselCoastal cargo shipFerryFishing vesselYachtNaval auxiliary craft

Decision Guide: Choose if you need a compact, high‑efficiency 200 kVA generator for vessels with limited engine‑room space and can accommodate an IP23 enclosure. Avoid if your vessel requires higher power output, stricter environmental sealing (e.g., IP55), or documented IMO D‑2/USCG type approvals that are not confirmed for this model.

Use Cases: Typically installed as the main auxiliary generator on small to medium vessels, providing ship service power for lighting, HVAC, cargo handling equipment, and serving as an emergency power source when primary propulsion generators are offline.

Datasheet

ECO32 250kVA 400V 50Hz unverified

· compact high-efficiency marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (≈96%) reduces fuel consumption and emissions.
Class H insulation permits operation at elevated temperatures, extending service life.
Compact IP23 enclosure saves space in engine rooms while providing splash protection.
Four‑pole design gives stable 50 Hz output suitable for most shipboard electrical systems.
Robust construction with proven MeccAlte reliability and low vibration levels.

Weaknesses

IP23 rating offers only limited protection; not suitable for harsh, dusty or fully sealed environments.
Maximum voltage of 400 V may require step‑up/down transformers on vessels using higher distribution voltages.
250 kVA output limits use to auxiliary rather than main propulsion power on larger ships.
Air‑cooled version can be sensitive to extreme ambient temperatures without additional cooling measures.
Spare parts and service network are strongest in Europe; availability may be slower in remote regions.

Typical Vessels: Offshore supply vesselFerryCoastal tankerSmall container shipResearch or survey vessel

Decision Guide: Choose if you need a compact, fuel‑efficient auxiliary generator around 250 kVA with robust thermal performance and the vessel can accommodate an IP23 enclosure. Avoid if the installation requires higher voltage levels, fully sealed (IP55/65) protection, or power output exceeding 300 kVA.

Use Cases: The ECO32 is commonly installed as a main auxiliary generator supplying hotel loads, navigation equipment, and emergency power on medium‑size commercial vessels. It also serves as a standby unit for propulsion auxiliaries on offshore support ships where space and efficiency are critical.

Datasheet

ECO32 250kVA 400V 60Hz unverified

· compact high‑efficiency marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption
Compact size and low weight suit vessels with limited engine‑room space
Class H insulation allows reliable operation in hotter climates
IP23 enclosure provides adequate protection against splashing water for most deck installations
Integrated control panel simplifies monitoring and maintenance

Weaknesses

IP23 rating is not fully splash‑proof; unsuitable for harsh wet‑deck environments requiring IP66 or higher
Limited to 400 V output – may need step‑up transformers for vessels standardising on 660 V systems
Noise level higher than newer low‑noise generator designs
Spare‑parts network less extensive in regions where MeccAlte has limited representation
Power density lower than some competing 250 kVA units from larger OEMs (e.g., Caterpillar, MAN)

Typical Vessels: Platform Supply VesselOffshore Support VesselCoastal TankerSmall Bulk CarrierFerryNaval auxiliary ship

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if: you need a compact, high‑efficiency 250 kVA generator for vessels with limited engine‑room space, operating at 400 V/60 Hz and have access to MeccAlte service support. Avoid if: the installation requires higher splash protection (IP66+), a higher voltage output, or you prioritize ultra‑low noise levels over compactness.

Use Cases: Typically installed as the main auxiliary generator on offshore supply vessels and small tankers to supply hotel loads, emergency power, and propulsion auxiliaries. Also used on ferries and naval support ships where space constraints and fuel efficiency are critical.

Datasheet

ECO32 250kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (≈95%) reduces fuel consumption
Compact footprint and modular design eases installation in limited engine rooms
Robust H‑class insulation provides good temperature tolerance and longevity
Integrated cooling system maintains stable operation under continuous load
IP23 enclosure offers adequate protection for typical marine environments while allowing easy access for maintenance

Weaknesses

IP23 rating does not protect against heavy spray or immersion; additional shielding may be required in harsh weather zones
Brush‑type construction requires periodic inspection and replacement
Weight is relatively high compared to newer oil‑free screw generators of similar power
Fixed 50 Hz output limits use on vessels operating on 60 Hz shore power without a frequency converter
Limited to four poles; higher pole counts for lower speed applications are not available in this model

Typical Vessels: Medium‑size container shipsBulk carriers (up to ~30,000 DWT)Offshore supply vesselsFerries and Ro‑Ro vesselsCruise ship auxiliary power units

Decision Guide: Choose if: you need a proven, high‑efficiency 250 kVA generator with a compact layout for 50 Hz fleets and can accommodate routine brush maintenance. Avoid if: the installation requires IP66/67 protection, oil‑free operation, or direct compatibility with 60 Hz shore power without converters.

Use Cases: Typically installed as an auxiliary generator supplying hotel loads, emergency power, and sometimes shore‑power generation on vessels where space is at a premium but reliable continuous output is essential.

Datasheet

ECO32 250kVA 440V 60Hz unverified

· brushless marine alternator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption and emissions
Compact footprint and low weight compared with comparable cast‑iron generators
Integrated voltage regulator simplifies installation and maintenance
Low noise and vibration levels, suitable for passenger areas
Corrosion‑resistant housing (insulation class H) meets marine durability requirements

Weaknesses

IP23 enclosure provides limited protection; requires well‑ventilated, dry locations
Designed for 60 Hz only – not directly usable on vessels requiring 50 Hz power
250 kVA may be insufficient for larger ships that need higher auxiliary capacity
Open design can be prone to ingress of water spray in harsh weather zones
May require an external cooling system in high ambient temperature conditions

Typical Vessels: Offshore supply vesselFerryCoastal tankerContainer feederCruise ship auxiliary power

Certifications: ABS Type ApprovalDNV GL

Decision Guide: Choose the ECO32 when you need a compact, high‑efficiency 250 kVA generator for 60 Hz vessels with space constraints and moderate environmental exposure. Avoid it on ships that require 50 Hz power, higher auxiliary output, or operation in heavy spray zones where a higher IP rating is mandatory.

Use Cases: Typically installed as an auxiliary generator on medium‑size commercial vessels to supply hotel loads, navigation equipment, and emergency power. Its brushless design and low noise make it popular on passenger ferries and offshore support ships where comfort and reliability are critical.

Datasheet

ECO32 250kVA 690V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brush‑less design eliminates wear parts and reduces maintenance intervals
Compact footprint suitable for limited engine‑room space
Class H insulation allows operation at higher temperatures, improving reliability in hot climates
IP23 enclosure provides splash protection while keeping the unit lightweight
Four‑pole construction delivers stable 50 Hz output with good voltage regulation

Weaknesses

IP23 rating does not protect against heavy spray or dust; unsuitable for harsh exposure without additional shielding
Maximum continuous power of 250 kVA may be insufficient for larger vessels requiring higher redundancy
External cooling system (air‑forced) is required, adding auxiliary components
Higher initial purchase price compared with basic open‑frame generators

Typical Vessels: Offshore supply vesselFerrySmall container shipCruise‑ship hotel load generatorTugboatFishing vessel

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if: you need a reliable, low‑maintenance 250 kVA source for medium‑sized vessels with limited engine‑room space and can accommodate splash‑protected installation. Avoid if: the vessel requires higher power output, fully sealed (IP55+) protection, or ultra‑low initial cost.

Use Cases: Commonly installed as a main auxiliary generator on offshore supply ships, ferries, and cruise‑ship hotel‑load systems; also used as an emergency generator where compactness and quick start are valued.

Datasheet

ECO32 250kVA 690V 60Hz unverified

· brushless low‑speed marine alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (typically >95%) reduces fuel consumption for auxiliary loads
Brush‑less construction minimises routine maintenance and extends service intervals
Compact, low‑speed (1500 rpm) design fits well in confined engine‑room spaces
Robust IP23 enclosure provides protection against dust and limited water spray
Standard 690 V three‑phase output matches most marine electrical distribution systems

Weaknesses

IP23 rating does not protect against heavy splashing or immersion, limiting placement in wet zones
Fixed 690 V output may require additional transformers for vessels using lower voltage standards
External cooling system is required; integration can add complexity compared to fully self‑cooled units
Weight and size are larger than newer high‑speed generators of equivalent rating
Single unit provides no built‑in redundancy; a second generator is needed for critical loads

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (auxiliary power)Offshore supply vessel

Decision Guide: Choose if you need a reliable 250 kVA auxiliary source with high efficiency, brush‑less operation and can accommodate a low‑speed, IP23‑rated unit in the engine room. Avoid if your installation requires full water‑tight protection, lower voltage distribution, or the highest power‑to‑weight ratio.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size cargo vessels, providing hotel loads, deck machinery and emergency power; also used on cruise ships for non‑critical services where space savings and low maintenance are priorities.

Datasheet

ECO38 250kVA 400V 50Hz unverified

· Brushless marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency resulting in lower fuel consumption
Brush‑free design reduces maintenance intervals and downtime
Compact size and IP23 enclosure suited for deck or engine‑room mounting where space is limited
Class H insulation allows operation at elevated temperatures with good reliability
Four‑pole construction provides stable frequency output under varying loads

Weaknesses

IP23 rating offers only limited protection against water spray; not suitable for harsh wet‑deck environments without additional shielding
Maximum voltage of 400 V may require step‑up transformers for vessels that standardise on higher distribution voltages
Single‑unit power output (250 kVA) limits use on larger ships that need multiple high‑capacity generators
Initial purchase cost can be higher than comparable non‑brushless units
External cooling system may be required in hot climates, adding installation complexity

Typical Vessels: Offshore supply vesselFerry / Ro‑Ro passenger shipPatrol or coast guard cutterResearch / survey vesselYacht or luxury motor cruiser

Decision Guide: Choose if: you need a compact, low‑maintenance auxiliary generator of up to 250 kVA for medium‑size vessels with limited installation space and value high efficiency. Avoid if: the vessel requires higher voltage distribution, multiple megawatt‑class generators, or operation in environments demanding IP65+ protection.

Use Cases: Typically installed as a primary hotel‑load generator on small to mid‑size commercial ships, providing auxiliary power for lighting, HVAC, and cargo handling equipment, and also used as an emergency standby source where reliability and quick start are critical.

Datasheet

ECO38 250kVA 400V 60Hz unverified

· compact high‑efficiency marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption and emissions
Compact footprint suitable for limited engine‑room space
Class H insulation permits operation at elevated temperatures
Low acoustic noise thanks to optimized rotor and bearing design
Integrated control panel simplifies installation and monitoring

Weaknesses

IP23 enclosure offers only limited splash protection; not fully watertight
Designed for 60 Hz only – unsuitable where dual‑frequency capability is required
Requires an external cooling‑water pump, adding system complexity
Relatively high weight for its power rating compared with newer lightweight units
Vibration isolation may be needed on smaller vessels

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if: you need a proven, high‑efficiency 250 kVA generator for 400 V/60 Hz auxiliary power on vessels with limited engine‑room space and can accommodate an external cooling system. Avoid if: the installation requires full splash‑proof (IP≥44) enclosures, dual‑frequency operation, or the lightest possible weight solution.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, navigation equipment, and emergency power on medium‑size cargo ships, tankers, and cruise vessels; also used for shore‑power generation where 400 V/60 Hz is required.

Datasheet

ECO38 250kVA 440V 50Hz unverified

· brushless marine alternator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~96%) reduces fuel consumption and emissions.
Brush‑free design lowers maintenance intervals and operating costs.
Compact, modular construction fits limited engine‑room spaces.
Class H insulation allows operation at elevated temperatures typical of shipboard environments.
IP23 enclosure provides protection against solid objects and water spray while allowing easy access for service.

Weaknesses

Limited to 440 V/50 Hz; not suitable for vessels requiring 60 Hz or higher voltage systems.
250 kVA output may be insufficient for large ship auxiliary power demands.
IP23 rating is not fully sealed against harsh marine ingress, requiring additional protective measures in very wet areas.
External cooling system required for prolonged full‑load operation.

Typical Vessels: FerryOffshore supply vesselMedium‑size container ship (auxiliary power)Bulk carrier (auxiliary)Yacht / luxury liner

Certifications: IEC 60034-1ISO 8528-3

Decision Guide: Choose if you need a compact, high‑efficiency brushless alternator up to 250 kVA for 50 Hz shipboard auxiliary power and can accommodate an IP23 enclosure. Avoid if the vessel requires higher power output, 60 Hz operation, or a fully sealed (IP66/68) generator set.

Use Cases: Typically installed in auxiliary generator rooms as the main source of hotel power on medium‑size vessels, or paired with diesel engines for emergency power supply where space and maintenance reduction are priorities.

Datasheet

ECO38 250kVA 440V 60Hz unverified

· compact high‑efficiency marine alternator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High electrical efficiency (≈95%) reduces fuel consumption.
Compact IP23 enclosure saves space in engine rooms.
Class H insulation permits operation at elevated temperatures.
Integrated voltage regulator and control panel simplify installation and commissioning.
Low noise and vibration levels improve crew comfort.

Weaknesses

IP23 rating provides limited protection against water ingress; not suitable for harsh wet environments without additional shielding.
Designed for 60 Hz only, limiting use on vessels requiring 50 Hz systems.
Maximum continuous output of 250 kVA may be insufficient for larger ships or high‑power auxiliaries.
External cooling may be required for prolonged full‑load operation.
Single unit design offers limited redundancy compared with twin‑generator setups.

Typical Vessels: Offshore supply vesselPatrol boatFerryYachtResearch vessel

Decision Guide: Choose if: you need a compact, high‑efficiency generator for vessels up to medium size, operating on a 60 Hz system, and space/weight constraints are critical. Avoid if: the installation requires robust water‑tight protection (higher IP rating), 50 Hz compatibility, or higher power output than 250 kVA.

Use Cases: Commonly installed in engine rooms of offshore supply ships, coast guard patrol boats, ferries and large yachts to provide auxiliary power for navigation, hotel services and emergency systems. Its compact form allows placement in confined spaces while delivering reliable electricity under variable load conditions.

Datasheet

ECO38 250kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Four‑pole construction provides stable frequency and low vibration
Class H insulation allows operation at higher ambient temperatures
Compact IP23 enclosure simplifies installation in limited spaces
Standard 690 V output matches common shipboard three‑phase distribution systems
Proven Mecc Alte brand reputation for durability in marine environments

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh dusty or wet compartments
Fixed 50 Hz design limits use on vessels requiring 60 Hz power
Physical size may be larger than newer high‑speed generator sets of similar rating
No integrated control panel – requires separate governor/controller installation

Typical Vessels: Container shipBulk carrierTankerRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose if you need a reliable 250 kVA auxiliary generator for vessels operating on 690 V/50 Hz systems, value Class H insulation and prefer a proven Mecc Alte design. Avoid if the installation demands higher ingress protection (IP≥44), 60 Hz operation, or extremely tight space constraints.

Use Cases: Commonly installed as an auxiliary or emergency generator to supply hotel loads, navigation equipment, and cargo‑handling systems on medium‑size commercial vessels; also used in offshore support ships where a robust, temperature‑tolerant generator is required.

Datasheet

ECO38 250kVA 690V 60Hz unverified

· brushless high‑efficiency alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and low weight compared with comparable synchronous generators
High efficiency (typical >95%) reduces fuel consumption for auxiliary loads
Four‑pole design provides good voltage regulation at 690 V
IP23 enclosure suitable for protected engine rooms while allowing easy access for maintenance
Insulation class H gives a high temperature tolerance and longer service life

Weaknesses

IP23 rating offers limited protection against water spray; not ideal for exposed deck installations
Maximum output of 250 kVA may be insufficient for larger vessels requiring multiple large auxiliaries
No built‑in sound attenuation; additional muffling may be required in noise‑sensitive areas
Requires a separate exciter system (brushless design) which adds to initial cost

Typical Vessels: Cruise shipFerryOffshore supply vesselMedium‑size container shipGeneral cargo vessel

Certifications: IEC 60034-1 (Rotating electrical machines – General requirements)IEC 60945 (Maritime navigation and radiocommunication equipment – Performance standards)

Decision Guide: Choose if you need a compact, high‑efficiency auxiliary generator for vessels with protected engine rooms and moderate power demand. Avoid if the installation environment is exposed to heavy spray or seawater, or if higher power output or stricter noise limits are required.

Use Cases: Typically installed as an auxiliary generator on cruise ships, ferries, and offshore supply vessels to supply hotel loads, navigation equipment, and emergency power where space is at a premium and fuel efficiency is valued.

Datasheet

ECO38 300kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

300

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Delivers 300 kVA in a relatively compact footprint suitable for medium‑size vessels.
Class H insulation permits operation at elevated ambient temperatures, improving reliability in hot climates.
IP23 enclosure provides splash protection for deck‑mounted installations.
Four‑pole construction ensures stable 50 Hz frequency with low vibration.
Modular design allows straightforward routine maintenance and quick part replacement.

Weaknesses

IP23 rating does not protect against dust or heavy water ingress, limiting use in harsh environments.
Fixed 400 V output may require additional transformers for vessels that operate on different bus voltages.
Weight is higher than some newer compact diesel‑electric units, impacting space allocation.
No integrated digital control system; a separate governor/controller must be installed.
Optimised for 50 Hz operation only – not directly suitable for 60 Hz markets without derating.

Typical Vessels: Offshore Supply VesselPlatform Supply VesselFerryCoast Guard CutterSmall Container Ship

Decision Guide: Choose if: you need a reliable 300 kVA auxiliary source for 50 Hz vessels, operate in hot climates, and can accommodate an IP23‑rated deck installation. Avoid if: the vessel requires dust‑tight or fully watertight enclosures, operates on 60 Hz systems, or has strict weight/space constraints.

Use Cases: Commonly installed as a main auxiliary generator on offshore support vessels, platform supply ships and ferries where robust, high‑temperature capable power is required for hotel loads, cargo handling equipment, and emergency services. It is also used on coast guard cutters and small container carriers that need dependable standby generation.

Datasheet

ECO38 300kVA 400V 60Hz unverified

· brushless synchronous generator

Power (kVA)

300

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency brushless design reduces maintenance intervals
Compact footprint suitable for limited engine‑room space
Class‑H insulation allows operation in high ambient temperature zones
Robust 4‑pole construction provides good overload capability (up to 110 % for short periods)
Standard 400 V output matches most marine auxiliary distribution systems

Weaknesses

IP23 rating offers limited protection against water spray; not ideal for exposed deck installations
Only rated for 60 Hz operation, unsuitable for vessels requiring 50 Hz power grids
Maximum continuous voltage of 400 V may require step‑up/down transformers on some ships
Weight can be significant for very small workboats where space and displacement are critical
Spare parts logistics depend on regional Mecc Alte dealer network

Typical Vessels: Offshore supply vesselFerryCoastal tankerSmall container shipCruise‑ship service generatorWorkboat / tug

Decision Guide: Choose if: you need a reliable 300 kVA auxiliary power source with brushless operation, compact size and high temperature tolerance for medium‑size vessels operating on a 60 Hz system. Avoid if: the installation requires higher IP protection, 50 Hz compatibility, or a voltage rating above 400 V.

Use Cases: Typically installed as the main auxiliary generator on mid‑size commercial ships, providing power for hotel services, cargo handling equipment and emergency loads; also used as standby generators in offshore platforms where space and weight are at a premium.

Datasheet

ECO38 300kVA 440V 50Hz unverified

Power (kVA)

300

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H permits reliable operation at elevated temperatures typical of engine rooms.
Four‑pole design provides stable 50 Hz output and good voltage regulation.
Compact IP23 enclosure is suited for protected indoor locations, saving valuable space.
Reputable MeccAlte build quality offers long service life with standard marine maintenance intervals.

Weaknesses

IP23 rating does not protect against direct water spray or immersion; unsuitable for exposed deck installations.
No integrated fire‑suppression system – requires external safety equipment.
Limited to indoor mounting, which may constrain placement on vessels with tight engine‑room layouts.

Typical Vessels: FerriesOffshore supply vesselsMedium‑size container shipsBulk carriers (up to 30 000 dwt)Cruise ship auxiliary power

Decision Guide: Choose if you need a reliable 300 kVA generator for indoor engine‑room use, value high temperature tolerance and compact size, and can provide external fire protection. Avoid if the installation requires a higher ingress protection rating (e.g., IP54 or above) or if space constraints demand an even smaller footprint.

Use Cases: Typically installed in the main machinery spaces of medium‑sized commercial vessels to supply auxiliary power for hotel services, navigation equipment, and cargo handling systems. Often paired with diesel engines as part of a genset set for redundancy on offshore support ships and ferries.

Datasheet

ECO38 300kVA 440V 60Hz unverified

· brushless marine alternator

Power (kVA)

300

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates brush wear and reduces routine maintenance intervals.
Compact IP23 enclosure saves valuable engine room space while protecting against dust and solid objects.
Insulation class H allows operation in high ambient temperature environments typical of tropical routes.
Four‑pole construction provides stable voltage and frequency under varying load conditions.
Integrated voltage regulator (when fitted) simplifies installation and improves power quality.

Weaknesses

IP23 rating offers limited protection against water ingress; additional sealing may be required in very wet environments.
Maximum output of 300 kVA may be insufficient for larger vessels or high‑power auxiliary loads.
Cooling is typically air‑forced; on hot days supplemental cooling may be needed to keep temperatures within class H limits.
Noise level is moderate; acoustic insulation might be required for passenger‑comfort applications.
Standard model does not include built‑in emission control (e.g., SCR); compliance depends on the prime mover.

Typical Vessels: General cargo shipsOffshore supply vesselsFerriesSmall cruise linersFishing vessels

Decision Guide: Choose if you need a reliable, low‑maintenance 300 kVA generator for medium‑size vessels where space is at a premium and high ambient temperatures are expected. Avoid if the vessel requires higher power output, stricter water‑tight enclosure ratings (e.g., IP54+), or integrated emission‑control systems that are not supplied with this alternator.

Use Cases: The ECO38 is commonly installed as the main auxiliary generator on offshore supply vessels and ferries, providing hotel loads, navigation equipment, and emergency power. It is also used on general cargo ships where a compact, brushless unit reduces engine‑room clutter and maintenance costs.

Datasheet

ECO38 300kVA 690V 50Hz unverified

· air-cooled marine alternator

Power (kVA)

300

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption and emissions.
Compact modular construction fits confined engine rooms.
Class H insulation tolerates temperatures up to 180 °C, extending service life.
IP23 enclosure protects against dust and limited water spray typical of machinery spaces.
Low vibration design and easy access for routine maintenance.

Weaknesses

IP23 rating does not protect against heavy water spray; additional shielding may be required in wet locations.
Fixed 690 V output limits use on vessels that standardise on lower voltages (e.g., 440/660 V).
Short‑duration overload capability requires careful load management.
Relatively high weight can complicate installation on smaller craft.
External cooling may be needed in very hot ambient conditions.

Typical Vessels: Container ShipBulk CarrierTankerCruise VesselOffshore Supply VesselFerry

Certifications: DNV GL Type Approval

Decision Guide: Choose the ECO38 when you need a compact, high‑efficiency 300 kVA alternator for standard 690 V shipboard distribution and have adequate space and ventilation. Avoid if your vessel requires lower voltage output, operates in environments with heavy water spray, or has strict weight constraints.

Use Cases: The ECO38 is typically installed alongside medium‑speed diesel engines on mid‑size to large commercial vessels, supplying auxiliary power for hotel loads, navigation equipment, and cargo handling systems. It is also used on offshore support ships where space efficiency and reliability are critical.

Datasheet

ECO38 300kVA 690V 60Hz unverified

· brushless marine alternator

Power (kVA)

300

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency brushless design reduces maintenance and extends service intervals
Compact size relative to its 300 kVA rating saves installation space
Robust class‑H insulation allows operation in high‑temperature engine rooms
Standard 690 V output matches most marine diesel generator sets for easy integration
Four‑pole construction provides good overload capability and stable voltage regulation

Weaknesses

IP23 enclosure only protects against solid objects >12.5 mm; not suitable for exposed wet locations without additional shielding
Fixed 690 V output limits flexibility if a vessel requires alternative voltage levels
Requires external control panel and protection devices – not a turnkey generator set
Weight and mounting dimensions are relatively high for small craft (exact data unavailable)
No built‑in redundancy; a single unit failure impacts auxiliary power unless duplicated

Typical Vessels: Container shipBulk carrierTankerCruise ferryOffshore supply vessel

Certifications: IMO D‑2DNV GL approval

Decision Guide: Choose if: you need a reliable 300 kVA auxiliary generator for vessels with standard 690 V busbars, prefer low‑maintenance brushless technology, and can provide a protected installation space. Avoid if: the equipment will be exposed to direct spray or seawater (requires higher IP rating), you require flexible voltage outputs, or you need an all‑in‑one generator set with integrated controls.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling gear, and emergency systems on medium‑size commercial vessels. Often paired with a diesel engine in a dedicated generator room and used for both normal operation and standby power.

Datasheet

ECO38 350kVA 400V 50Hz unverified

· brushless marine alternator

Power (kVA)

350

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for medium‑size vessels
Insulation class H allows operation in elevated temperature environments
Compact footprint simplifies installation in confined engine rooms
Standard 400 V/50 Hz output matches most European‑type ship electrical systems
Proven Mecc Alte reputation for reliability and low maintenance

Weaknesses

IP23 enclosure provides limited protection against water spray; not suitable for harsh wet‑deck exposure without additional shielding
Designed for 50 Hz markets only – unsuitable where 60 Hz is required
Requires an external cooling system (air or liquid) to maintain temperature limits
No integrated engine; must be paired with a compatible diesel prime mover, adding system complexity

Typical Vessels: Offshore supply vesselFerrySmall container shipCruise ship auxiliary power unitNaval auxiliary generator

Decision Guide: Choose if you need a compact, high‑temperature tolerant 350 kVA alternator for 400 V/50 Hz systems on medium‑size vessels and can provide adequate enclosure protection. Avoid if the installation requires a higher IP rating, operation at 60 Hz, or an all‑in‑one generator set with integrated engine.

Use Cases: Typically installed as the main auxiliary generator for hotel load, emergency power supply, or secondary propulsion support on offshore supply vessels, ferries and cruise ships where space is limited and reliable high‑temperature performance is essential.

Datasheet

ECO38 350kVA 400V 60Hz unverified

· marine synchronous generator

Power (kVA)

350

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency design reduces fuel consumption and emissions
Compact footprint suitable for limited engine‑room space
Robust Class H insulation allows operation at elevated temperatures
Standard 4‑pole construction provides stable frequency output
Integrated control options (remote monitoring, automatic voltage regulation) are available

Weaknesses

IP23 rating offers only limited protection against water spray and dust; not suitable for harsh wet environments without additional shielding
Designed for 60 Hz systems only – unsuitable where 50 Hz is required
External cooling or ventilation may be needed in high‑temperature installations
Weight can be significant for vessels with strict weight‑distribution limits (exact figure unavailable)
Limited to 400 V output; higher voltage requirements need step‑up transformers

Typical Vessels: TankerBulk carrierContainer shipOffshore supply vesselCruise shipNaval auxiliary

Decision Guide: Choose if: you need a reliable 350 kVA auxiliary generator for 400 V/60 Hz systems, value high efficiency and compact size, and can accommodate an IP23 enclosure. Avoid if: the vessel operates on 50 Hz, requires higher ingress protection (IP55 or above), or has strict weight‑distribution constraints that demand a lighter unit.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, emergency power, and support for cargo handling equipment on mid‑size commercial vessels and offshore platforms.

Datasheet

ECO38 350kVA 440V 50Hz unverified

· diesel‑engine driven alternator

Power (kVA)

350

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency and low specific fuel consumption for its class
Compact footprint with a robust IP23 enclosure suitable for typical shipboard environments
Four‑pole design provides good overload capability (up to 110 % for short periods)
Insulation class H allows operation in high ambient temperature zones
Widely accepted by major classification societies, simplifying installation approval

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for harsh wet‑deck applications
Noise and vibration levels are moderate and may require additional acoustic treatment on noise‑sensitive vessels
Diesel fuel requirement limits use where low‑emission or LNG hybrid solutions are mandated
Weight and mounting dimensions are typical of medium generators, which can be a constraint in very space‑restricted installations

Typical Vessels: Container shipsBulk carriersTankers (product/chemical)Cruise liners & ferriesOffshore supply vesselsLarge fishing vessels and yachts

Certifications: IMO Type ApprovalABS ClassificationDNV GL Classification

Decision Guide: Choose if you need a proven, fuel‑efficient diesel generator in the 300–400 kVA range with a compact layout and standard classification approvals. Avoid if the installation demands higher ingress protection (IP55+), ultra‑low emissions (e.g., LNG or hybrid), or a significantly lower noise footprint without additional mitigation.

Use Cases: The ECO38 is typically installed as an auxiliary power source to supply hotel loads, cargo handling equipment, and emergency power on medium‑size commercial vessels. It is also used in retrofit projects where space and weight are limited but reliable diesel generation is required.

Datasheet

ECO38 350kVA 440V 60Hz unverified

· high‑efficiency brushless marine alternator

Power (kVA)

350

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for space‑constrained engine rooms
H‑class insulation allows higher temperature operation and longer service life
Four‑pole construction provides stable frequency and low vibration
IP23 enclosure offers basic protection against dust and splashing in typical marine environments
Brushless design reduces maintenance intervals

Weaknesses

IP23 rating does not protect against heavy spray or immersion, requiring additional shielding in harsh weather decks
No built‑in sound attenuation; may need external mufflers for noise‑sensitive vessels
Designed for 60 Hz only – not suitable where dual‑frequency (50/60 Hz) capability is required
Weight and mounting dimensions can be substantial compared with smaller auxiliary generators
Requires an external cooling system; not a self‑cooled unit

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer shipsTankersLarge fishing vessels

Decision Guide: Choose if you need a reliable 350 kVA auxiliary power source with high temperature tolerance and a compact, low‑maintenance brushless design on vessels that operate primarily in 60 Hz regions. Avoid if the installation demands higher ingress protection (IP≥44), built‑in acoustic treatment, or dual‑frequency capability.

Use Cases: Commonly installed as part of main or emergency auxiliary generator sets to supply hotel loads, navigation equipment, and cargo handling systems on medium‑to‑large merchant vessels where space and maintenance reduction are priorities.

Datasheet

ECO38 350kVA 690V 50Hz unverified

· compact high-efficiency marine alternator

Power (kVA)

350

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Robust cast‑iron frame provides long service life and resistance to vibration.
High efficiency (~95 %) reduces fuel consumption for auxiliary power.
Integrated cooling system allows continuous operation at rated load.
Class H insulation supports higher temperature operation, extending lifespan.
IP23 enclosure is suitable for protected engine‑room environments.

Weaknesses

IP23 rating offers limited protection against water ingress; additional sealing may be required in harsh marine conditions.
Relatively heavy due to cast‑iron construction, impacting weight‑critical vessels.
Fixed 690 V/50 Hz output limits use on vessels requiring 60 Hz or lower voltage systems without transformers.
Physical size may be restrictive for small craft with limited engine‑room space.

Typical Vessels: Cruise shipFerryOffshore supply vesselContainer shipTankers (as auxiliary generator)

Decision Guide: Choose if: you need a dependable 350 kVA auxiliary generator with high efficiency and robust construction for medium‑to‑large vessels operating on 50 Hz systems. Avoid if: space, weight, or higher IP protection are critical, or the vessel requires 60 Hz power without additional conversion equipment.

Use Cases: Commonly installed as a main auxiliary generator in cruise ships and ferries, providing hotel loads, cargo handling equipment, and emergency power; also used on offshore support vessels for continuous power to deck machinery and accommodation services.

Datasheet

ECO38 350kVA 690V 60Hz unverified

· diesel‑driven synchronous generator

Power (kVA)

350

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (350 kVA) suitable for medium‑size vessels
H‑class insulation allows operation in high ambient temperature zones
Four‑pole design provides stable frequency and reduced vibration
IP23 enclosure protects against splashing water typical of engine rooms
Standard 690 V three‑phase output matches common shipboard distribution systems

Weaknesses

Only 60 Hz rating limits use on vessels requiring 50 Hz power (e.g., many European ships)
IP23 protection is not dust‑tight; additional sealing may be needed in harsh environments
Physical size and weight are typical of high‑power generators, restricting installation on small craft
Requires a dedicated cooling water system and exhaust arrangement
Maintenance intervals are comparable to other diesel generators – no built‑in redundancy

Typical Vessels: Bulk carrierContainer shipGeneral cargo vesselOffshore supply vesselCruise ship (auxiliary power)

Decision Guide: Choose if: you need a reliable 350 kVA source for 690 V/60 Hz shipboard distribution, operate in warm climates where H‑class insulation is beneficial, and have space for a standard marine generator installation. Avoid if: the vessel requires 50 Hz power, operates in dusty or highly corrosive environments needing higher IP rating, or has strict weight/space constraints that demand a more compact unit.

Use Cases: The ECO38 is typically installed as the main auxiliary generator on medium‑size merchant ships, providing power for cargo handling equipment, hotel services, and emergency loads. It is also used on offshore supply vessels to run dynamic positioning systems and deck machinery where a robust 60 Hz supply is required.

Datasheet

ECO38 400kVA 400V 50Hz unverified

· diesel generator set

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency core design reduces fuel consumption for mid‑size shipboard loads.
Compact IP23 enclosure saves space in engine rooms while still protecting against dust and water spray.
Integrated control panel with automatic voltage regulation simplifies operation and monitoring.
Four‑pole construction provides stable frequency and lower harmonic distortion.
Insulation class H allows safe operation at elevated ambient temperatures typical on vessels.

Weaknesses

IP23 rating offers limited protection; not suitable for harsh, spray‑heavy environments without additional shielding.
Fixed 400 V/50 Hz output limits flexibility for vessels that require 60 Hz or alternative voltage configurations.
Typical diesel generator maintenance (oil changes, filter replacement) is still required at regular intervals.
Noise level is moderate; may need extra acoustic insulation on noise‑sensitive ships.
Weight and mounting dimensions can be substantial compared with newer hybrid or electric alternatives.

Typical Vessels: Container shipBulk carrierTankerCruise ferryOffshore supply vessel

Decision Guide: Choose if you need a proven, mid‑size diesel generator with compact footprint and integrated control for standard 400 V/50 Hz shipboard power. Avoid if the installation requires higher ingress protection (IP55+), 60 Hz operation, or ultra‑low emissions that exceed typical Tier II standards.

Use Cases: The ECO38 is commonly installed as a main auxiliary generator on medium‑sized cargo vessels and ferries, providing hotel load power, emergency standby supply, and support for deck machinery such as pumps and winches during normal operations.

Datasheet

ECO38 400kVA 400V 60Hz unverified

· low-emission diesel generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (up to ~92%) reducing fuel consumption
Compact footprint with IP23 enclosure suitable for typical engine rooms
Class H insulation allows operation up to 180 °C ambient temperature
Integrated digital control panel simplifies monitoring and fault diagnostics
Meets Euro III/IV emission standards, beneficial for regulated waters

Weaknesses

IP23 rating provides limited protection against water spray; not suitable for exposed deck installations
Fixed 400 V output may require additional transformers for vessels with different bus voltages
Noise level can be high without supplemental silencing measures
Weight and dimensions are relatively large compared with newer hybrid or gas‑turbine alternatives

Typical Vessels: Container ship (auxiliary power)Bulk carrierTankerOffshore supply vesselFerryCruise ship (hotel load)

Certifications: ABSDNV GL

Decision Guide: Choose if you need a reliable 400 kVA auxiliary generator with high fuel efficiency and low emissions for vessels that can accommodate an IP23‑rated unit in the engine room. Avoid if your installation requires higher ingress protection (e.g., IP66), a different voltage bus, or if space/weight constraints favor newer hybrid/gas‑turbine solutions.

Use Cases: Commonly installed as an auxiliary generator set on medium‑size cargo vessels and offshore platforms to supply hotel loads, emergency power, and shore‑side support. Also used on ferries and cruise ships where compact size and compliance with emission regulations are critical.

Datasheet

ECO38 400kVA 440V 50Hz unverified

· marine diesel‑generator alternator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 400 kVA in a relatively compact footprint (IP23)
Class‑H insulation allows reliable operation at elevated ambient temperatures
Four‑pole design provides stable 50 Hz output with low vibration
Robust construction suited for continuous marine service

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh wet‑deck environments
No built‑in explosion‑proof rating, limiting use in hazardous zones
Weight and dimensions are higher than some newer lightweight aluminum alternatives
Standard 440 V output may require step‑down transformers for vessels using lower voltage distribution

Typical Vessels: Container shipBulk carrierTankerCruise ferryOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑temperature capable 400 kVA generator for main or auxiliary power on medium to large vessels and can accommodate an IP23 enclosure. Avoid if: the installation requires explosion‑proof equipment, higher ingress protection (IP66/67), or a lighter‑weight aluminum alternator for space‑critical applications.

Use Cases: Commonly installed as the primary propulsion generator on container and bulk carriers, as auxiliary power for hotel loads on cruise ferries, or as emergency generators on tankers where reliable high‑temperature performance is critical.

Datasheet

ECO38 400kVA 440V 60Hz unverified

· synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency core design delivering stable 400 kVA output at 60 Hz
Compact footprint with robust cast‑iron housing suitable for limited engine rooms
H‑class insulation allows operation up to 180 °C, extending service life in hot climates
IP23 rating provides protection against dust and water spray typical of marine environments
Four‑pole construction gives good low‑speed torque characteristics when coupled to diesel engines

Weaknesses

IP23 enclosure is not fully watertight; unsuitable for areas exposed to heavy splashing or immersion
Limited to 440 V output, which may require step‑up transformers on vessels standardising on 690 V systems
Requires external diesel engine coupling – no integrated prime mover, adding installation complexity
Noise and vibration levels are higher than newer low‑speed, high‑efficiency generator sets
Weight can be significant for small craft or retrofits where space and displacement are critical

Typical Vessels: Container shipsBulk carriersCruise linersFerriesOffshore supply vessels

Certifications: DNV GL Type ApprovalABS Marine Equipment Certification

Decision Guide: Choose if you need a reliable 400 kVA auxiliary generator for 60 Hz vessels, have space for a compact but robust unit, and operate in environments where IP23 protection is sufficient. Avoid if the vessel requires higher voltage (e.g., 690 V), full watertight enclosure, or ultra‑low noise/vibration performance.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size cargo ships and passenger vessels to supply hotel loads, navigation equipment, and emergency power. Also used in retrofit projects where a proven, high‑temperature tolerant generator is required without extensive redesign of the engine room layout.

Datasheet

ECO38 400kVA 690V 50Hz unverified

· compact high-efficiency marine alternator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Integrated digital control system (ECO) simplifies installation and monitoring
High efficiency (~95%) reduces fuel consumption at rated load
Compact footprint and low weight compared with conventional generators of similar rating
Robust construction with Class H insulation suitable for high‑temperature environments
Low vibration and noise levels, beneficial for passenger comfort

Weaknesses

IP23 enclosure limits use to protected engine rooms; not suitable for exposed deck mounting
Fixed 690 V output may require additional transformers for vessels standardising on other voltages
Initial purchase price higher than basic open‑type generators of the same power
Requires dedicated cooling water system; cannot be air‑cooled in all installations
Spare parts and service network less widespread in some remote regions

Typical Vessels: Container shipBulk carrierRo‑Ro vesselOffshore supply vesselFerry

Decision Guide: Choose if: you need a compact, high‑efficiency generator up to 400 kVA with integrated control and can accommodate an IP23 protected engine room. Avoid if: the installation requires a fully sealed (IP55+) enclosure, a different voltage level, or the lowest possible upfront cost is the primary driver.

Use Cases: Commonly installed as auxiliary power generators on medium‑size merchant vessels, providing main ship service power and serving as emergency generators where space and efficiency are critical.

Datasheet

ECO38 400kVA 690V 60Hz unverified

· compact low‑emission diesel generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (up to ~38% at rated load) reducing fuel consumption
Compact footprint and low weight for space‑constrained installations
Euro III/IV compliant emissions, suitable for emission‑controlled zones
Class H insulation allows operation in high ambient temperatures
Standard remote monitoring interface available for condition‑based maintenance

Weaknesses

IP23 enclosure provides limited protection against water spray; not ideal for harsh marine exposure without additional shielding
Maximum output of 400 kVA may be insufficient for larger vessels with high hotel loads
Initial purchase price can be higher than generic, non‑certified generators
Sound levels may require extra acoustic insulation in noise‑sensitive applications

Typical Vessels: FerryOffshore supply vesselPatrol boatSmall tankersCruise ship auxiliary powerYacht

Decision Guide: Choose if: you need a compact, fuel‑efficient generator for vessels with limited engine room space and require low‑emission operation (Euro III/IV). Avoid if: the installation environment demands higher ingress protection (e.g., IP55) or the vessel’s power demand exceeds ~400 kVA.

Use Cases: Typically installed as an auxiliary power source to supply hotel loads, deck machinery, navigation equipment and emergency systems on medium‑size commercial vessels where space and fuel efficiency are critical.

Datasheet

ECO38 500kVA 400V 50Hz unverified

· diesel-driven marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 500 kVA in a relatively compact footprint
Class‑H insulation permits operation at elevated temperatures, improving reliability in hot climates
IP23 enclosure provides splash protection suitable for deck‑mounted installations
Four‑pole design ensures stable 50 Hz frequency under varying loads
MeccAlte’s reputation for robust construction and long service intervals

Weaknesses

Enclosure is only IP23, not fully dust‑tight or rain‑proof; additional shielding may be required in harsh weather
Weight can be significant for vessels with strict weight‑distribution limits
Noise level typical of conventional diesel generators; may need acoustic insulation on passenger ships
Limited to 400 V/50 Hz – conversion needed for vessels operating on other voltage/frequency standards
Maintenance intervals still required for fuel and oil systems despite improved design

Typical Vessels: Bulk carrierContainer shipProduct tankerGeneral cargo vesselOffshore supply vesselFerryCruise ship (hotel load)

Decision Guide: Choose if: you need a proven 500 kVA auxiliary generator for a 400 V/50 Hz system, space is at a premium and you value MeccAlte’s durability. Avoid if: the installation requires higher ingress protection (IP55+), lower emissions tier III compliance, or operation on a different voltage/frequency without additional conversion equipment.

Use Cases: Typically installed as an auxiliary power source for hotel loads, cargo handling equipment, and emergency power generation on medium‑size merchant vessels. It is also used in offshore support ships where reliable, high‑capacity diesel generation is required.

Datasheet

ECO38 500kVA 400V 60Hz unverified

· Medium‑speed marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency thanks to optimized winding and Class H insulation
Compact footprint with IP23 enclosure suitable for deck installation
Four‑pole design provides stable frequency at 60 Hz under variable loads
Robust construction delivers low vibration and long service intervals
Direct compatibility with standard 400 V three‑phase shipboard distribution

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and water spray; requires shelter in harsh weather
No integrated control or monitoring system – external governor/panel required
Fixed 60 Hz output may need conversion for vessels operating on 50 Hz systems
Maximum output of 500 kVA limits use on larger ships requiring >1 MW auxiliary power
Weight and exact dimensions are not published, potentially limiting installation on small vessels

Typical Vessels: Container ShipBulk CarrierTankerCruise ShipOffshore Supply Vessel

Certifications: DNV

Decision Guide: Choose if you need a compact, high‑efficiency 500 kVA generator for 400 V/60 Hz shipboard systems and can provide a protected mounting location. Avoid if the installation requires higher ingress protection (e.g., IP55), integrated control electronics, or operation on 50 Hz networks without conversion equipment.

Use Cases: Commonly installed as an auxiliary power source for main‑engine start‑up, hotel loads, and emergency power on medium‑size cargo vessels, passenger ships, and offshore supply platforms where space is at a premium and reliable 60 Hz output is required.

Datasheet

ECO38 500kVA 440V 50Hz unverified

· brushless marine alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency brushless design reduces maintenance (no brushes to replace).
Class‑H insulation allows operation in high ambient temperature environments.
Compact IP23 enclosure saves space in engine rooms while providing protection against solid objects.
Proven reliability with a long service history on many vessel classes.
Standard 4‑pole construction provides stable 50 Hz output suitable for most shipboard loads.

Weaknesses

IP23 rating does not protect against water ingress; additional sealing may be required in wet locations.
Maximum output of 500 kVA limits use on larger vessels that need higher generator capacity.
Air‑cooled design can be less efficient than liquid‑cooled units in very hot climates.
Relatively heavy compared with newer high‑speed, lightweight generators.
Single unit provides limited redundancy; multiple units are needed for critical power continuity.

Typical Vessels: Container ships (up to ~10 000 GT)Bulk carriersGeneral cargo vesselsOffshore supply vesselsFerries and cruise ship auxiliaries

Certifications: DNV Type ApprovalABS ApprovalLloyd's Register ClassificationIMO D‑2 (electrical equipment)IEC 60034‑1 compliance

Decision Guide: Choose if you need a reliable 500 kVA brushless generator with high temperature tolerance and a compact footprint for medium‑size vessels, and you have access to MeccAlte service support. Avoid if the installation requires water‑tight (IP66/68) protection, higher power output than 500 kVA, or ultra‑lightweight equipment.

Use Cases: Typically installed as an auxiliary generator on medium‑sized merchant ships for hotel loads and emergency power; also used as a standby unit in dynamic positioning systems or to supply shore power where space is limited.

Datasheet

ECO38 500kVA 440V 60Hz unverified

· brushless synchronous marine generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and low maintenance due to brush‑less design
Compact footprint suitable for limited engine room space
Robust Class H insulation allows operation in high ambient temperatures
Integrated overload capability up to 110% for short periods
Standard marine voltage (440 V) compatible with most shipboard distribution systems

Weaknesses

IP23 enclosure provides limited protection against water spray; not suitable for harsh wet environments without additional shielding
Fixed 440 V output may require step‑up transformers on vessels that operate at higher bus voltages
Relatively heavy compared with newer lightweight aluminum‑frame generators
Single‑unit design limits redundancy unless paired with another unit

Typical Vessels: Offshore supply vesselFerrySmall container shipCruise ship auxiliary powerNaval auxiliary generator

Certifications: DNV

Decision Guide: Choose if you need a reliable, compact 500 kVA brushless generator with good thermal performance for standard 440 V shipboard systems and have space constraints. Avoid if the installation requires higher protection (IP55+) against water ingress or operates on a bus voltage significantly above 440 V without transformer provision.

Use Cases: Typically installed as an auxiliary or emergency power source to supply hotel loads, deck machinery, navigation equipment, and propulsion auxiliaries on medium‑size commercial vessels. Often paired in dual‑generator sets for redundancy on offshore platforms and ferries.

Datasheet

ECO38 500kVA 690V 50Hz unverified

· brushless synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency design typical of the ECO series reduces fuel consumption.
Insulation class H allows operation in high‑temperature engine rooms.
Robust IP23 enclosure provides splash protection suitable for most marine environments.
Four‑pole construction matches standard 1500 rpm shaft speeds at 50 Hz, simplifying integration with common diesel engines.
Reputable Mecc Alte brand offers proven field service and spare‑part availability.

Weaknesses

IP23 rating does not protect against dust ingress or immersion, limiting use in harsher compartments.
No integrated control panel; requires external governor/monitoring system.
Physical size is larger than newer compact generators of similar power, affecting installation space.
Fixed voltage (690 V) may require additional step‑up/down equipment for vessels with different bus voltages.

Typical Vessels: Bulk CarrierTankerContainer ShipGeneral Cargo VesselOffshore Supply Vessel

Decision Guide: Choose if you need a proven 500 kVA brushless generator with high temperature tolerance and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection, integrated control electronics, or tighter space constraints.

Use Cases: Commonly installed as an auxiliary power source for main engine start‑up, hotel load supply, and emergency generation on medium‑size merchant vessels where reliability and service support are priorities.

Datasheet

ECO38 500kVA 690V 60Hz unverified

· four-pole low-speed marine alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Insulation class H provides high thermal endurance for continuous operation
Four‑pole design delivers stable 60 Hz output at the common 1800 rpm engine speed
IP23 splash‑proof enclosure is suited to typical engine‑room environments
Mecc Alte’s modular construction simplifies routine maintenance and part replacement
Proven reliability in a wide range of commercial vessels

Weaknesses

IP23 rating offers only limited protection against dust and water ingress compared with higher IP classes
Standard 690 V output may require additional transformers for vessels using different bus voltages
Physical size and weight are larger than some newer high‑efficiency compact generators
No integrated automatic voltage regulator; a separate AVR is required
Limited built‑in monitoring features compared with modern digital generator sets

Typical Vessels: Bulk CarrierContainer ShipProduct TankerCruise VesselOffshore Supply Vessel

Decision Guide: Choose if you need a robust, proven 500 kVA generator with high temperature tolerance and standard marine voltage, and you can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (IP54+), a more compact footprint, or integrated digital control/monitoring systems.

Use Cases: Commonly installed as auxiliary power for main propulsion support, hotel load supply, or emergency generation on medium‑size commercial ships where reliability and ease of maintenance are paramount.

Datasheet

ECO40 500kVA 400V 50Hz unverified

· brushless marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates the need for regular commutator maintenance.
High efficiency (≈95%) reduces fuel consumption for auxiliary power.
Class H insulation permits operation at elevated temperatures, enhancing durability in hot engine rooms.
Compact footprint and IP23 enclosure suit typical marine engine room layouts.
Four‑pole construction provides stable 50 Hz output with low vibration.

Weaknesses

IP23 rating offers limited protection against water ingress; additional shielding may be required in very wet environments.
Fixed 400 V/50 Hz output limits use on vessels that operate on 60 Hz or higher voltage systems.
Maximum continuous power of 500 kVA may be insufficient for larger ships requiring multiple high‑capacity generators.
Weight and mounting dimensions are not specified, potentially affecting installation planning.

Typical Vessels: Container shipBulk carrierTankerCruise ferryOffshore supply vessel

Decision Guide: Choose if you need a reliable, low‑maintenance 500 kVA auxiliary generator for vessels operating on 400 V/50 Hz with limited space and moderate environmental exposure. Avoid if the installation requires higher IP protection, 60 Hz operation, or greater power output.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size merchant ships, as a secondary emergency generator, or in shore‑power conversion sets where compact size and brushless reliability are valued.

Datasheet

ECO40 500kVA 400V 60Hz unverified

· high‑efficiency diesel‑driven alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size relative to its 500 kVA rating, saving engine‑room space
Class H insulation allows operation at higher temperatures without derating
IP23 enclosure provides basic protection against dust and light spray, suitable for typical marine environments
Four‑pole design runs at 1500 rpm on a 60 Hz system, matching standard diesel prime movers
MeccAlte’s reputation for robust construction and long service intervals

Weaknesses

IP23 rating does not protect against heavy water spray or immersion, limiting placement in very wet zones
Fixed 400 V output may require additional transformers on vessels standardized on 440 V/690 V systems
Weight is comparable to other mid‑size generators; no significant weight savings over competing brands
No built‑in redundancy features (e.g., dual windings) – a separate unit needed for full redundancy
Limited documentation publicly available, requiring direct manufacturer liaison for detailed installation data

Typical Vessels: Offshore supply vesselFerryMedium‑size container shipCoastal tankerCruise ship (auxiliary power)Large fishing vessel

Decision Guide: Choose if you need a reliable, mid‑range auxiliary generator with good thermal capability and a compact footprint for vessels operating on 400 V/60 Hz systems. Avoid if the installation area requires higher ingress protection (IP55 or above), if the ship uses a different voltage standard, or if built‑in redundancy is mandatory.

Use Cases: Typically installed as part of a genset in the engine room to supply hotel loads, navigation equipment, and cargo handling systems on board. Also used as an emergency generator on vessels where a single 500 kVA unit can meet statutory standby power requirements.

Datasheet

ECO40 500kVA 440V 50Hz unverified

· low‑emission marine alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (up to ~96%) reduces fuel consumption
Compact footprint and modular construction eases installation in engine rooms
H‑class insulation provides excellent temperature tolerance and reliability
IP23 enclosure protects against splashing water while allowing easy access for maintenance
Low vibration design improves crew comfort and prolongs service life

Weaknesses

IP23 rating is not fully dust‑tight; additional sealing may be required in harsh environments
Fixed 440 V output may need step‑up/down transformers for vessels with different voltage standards
Initial acquisition cost is higher than generic, lower‑spec alternators
Requires a compatible diesel engine and control system to achieve advertised emissions performance

Typical Vessels: FerryOffshore supply vesselMedium‑size container shipBulk carrierCruise ship (hotel load)Tanker (auxiliary power)

Certifications: ABS Type ApprovalDNV GL Type Approval

Decision Guide: Choose if you need a reliable 500 kVA auxiliary generator with high efficiency, compact size and proven classification‑society approvals for medium‑size vessels. Avoid if your vessel requires fully sealed (IP66+) equipment, different voltage levels without transformers, or a lower upfront cost outweighs the fuel‑saving benefits.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, emergency power, and support diesel‑electric propulsion systems on medium‑size commercial vessels where space is at a premium and fuel efficiency is a priority.

Datasheet

ECO40 500kVA 440V 60Hz unverified

· compact high‑efficiency marine alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency reduces fuel consumption on long voyages
Compact IP23 enclosure saves space in engine rooms of medium‑size vessels
Insulation class H provides good temperature tolerance and durability
Four‑pole design offers stable voltage regulation at 60 Hz
Widely supported by MeccAlte (Caterpillar) service network worldwide

Weaknesses

IP23 rating limits exposure to harsh weather; additional housing may be required for outdoor installations
Designed for 60 Hz only – not suitable for vessels operating on 50 Hz grids without a frequency converter
Noise level can be higher than fully insulated generators, often needing extra acoustic treatment
Maximum continuous output of 500 kVA may be insufficient for larger vessel main‑propulsion loads

Typical Vessels: Offshore supply vesselsFerriesMedium‑size tankers (e.g., product carriers)Container ships up to 10,000 GTResearch and survey vessels

Certifications: ABSDNV‑GL

Decision Guide: Choose if you need a reliable 500 kVA auxiliary power source on a medium‑size vessel, value compact size and high efficiency, and operate in a 60 Hz market with access to MeccAlte service. Avoid if the installation requires higher ingress protection (IP55+), must run on 50 Hz, or demands greater continuous power output.

Use Cases: Typically installed as the main auxiliary generator on offshore supply ships, ferries and medium‑size cargo vessels, providing hotel load, deck machinery power and emergency backup. Also used in shore‑based marine workshops and offshore platform power plants where space is at a premium.

Datasheet

ECO40 500kVA 690V 50Hz unverified

· high-efficiency diesel-driven alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and low weight relative to its 500 kVA rating, easing installation in limited engine rooms
Class H insulation allows operation at higher temperatures, improving reliability in warm climates
Four‑pole design provides stable 50 Hz output with reduced harmonic distortion
Integrated electronic regulation for precise voltage/frequency control and quick load acceptance
Designed for low emissions (ECO series) meeting modern environmental regulations

Weaknesses

IP23 enclosure offers only limited protection against water ingress; additional shielding may be required in harsh marine environments
Requires a separate diesel engine coupling – the unit is not a complete generator set, adding to overall system cost and space
Fixed 690 V output limits flexibility for vessels that standardise on other voltage levels (e.g., 440 V)
Maintenance access can be constrained by the compact layout in tight engine rooms

Typical Vessels: Container shipsBulk carriersGeneral cargo vesselsOffshore supply vesselsFerries

Certifications: IMO D-2

Decision Guide: Choose if: you need a compact, high‑efficiency 500 kVA auxiliary generator for vessels with limited engine‑room space and can provide adequate environmental protection for the IP23 enclosure. Avoid if: the installation requires higher ingress protection (IP44 or above), a fully integrated genset, or flexibility to operate on alternative voltage levels.

Use Cases: The ECO40 is typically installed as part of an auxiliary power system on medium‑size merchant ships, supplying hotel loads, cargo handling equipment, and emergency power. It is also used on offshore supply vessels where space savings and low emissions are critical.

Datasheet

ECO40 500kVA 690V 60Hz unverified

· brush‑less marine alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brush‑less design eliminates slip‑ring wear and reduces maintenance intervals.
High efficiency (>95 %) lowers fuel consumption for the coupled diesel engine.
Compact, low‑profile IP23 enclosure saves valuable engine‑room space.
Class H insulation permits operation at elevated temperatures (up to 180 °C).
Four‑pole construction provides stable 60 Hz output at standard marine speeds.

Weaknesses

Fixed voltage of 690 V limits flexibility for vessels that standardise on lower voltages.
IP23 rating protects against water spray only; not dust‑tight, requiring clean engine‑room conditions.
Relatively heavy for its power class compared with newer lightweight aluminium‑frame generators.
Enclosure is not explosion‑proof, so unsuitable for hazardous‑area installations without additional protection.
Limited to 1500/1800 rpm operation; may need speed reduction gear if paired with slower engines.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if: you need a reliable, low‑maintenance auxiliary generator with high efficiency and compact size for standard 690 V marine electrical systems. Avoid if: the installation requires dust‑tight or explosion‑proof enclosures, lower voltage output, or ultra‑lightweight equipment.

Use Cases: Commonly installed as part of an auxiliary power plant on large merchant vessels to supply hotel loads, cargo handling gear, and emergency power; also used in offshore platforms where space and maintenance intervals are critical.

Datasheet

ECO40 600kVA 400V 50Hz unverified

· high-efficiency diesel generator

Power (kVA)

600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Up to ~95% thermal efficiency reduces fuel consumption and CO₂ emissions
Compact, modular design fits tight engine‑room spaces
Insulation class H provides excellent temperature tolerance for harsh marine environments
IP23 enclosure suitable for protected deck or indoor installation while allowing easy access for maintenance
Built-in compliance with IMO Tier III emission limits when equipped with after‑treatment

Weaknesses

IP23 rating does not protect against direct water ingress; requires shelter in exposed locations
Fixed 400 V/50 Hz output may need step‑up/down transformers for vessels using other voltage standards
Higher upfront capital cost compared with lower‑efficiency competitors
Noise level is moderate and may require additional acoustic insulation on noisy platforms
Requires diesel fuel logistics; not suitable for pure electric or LNG‑only ships

Typical Vessels: Container shipCruise linerOffshore support vesselFerryTanker (auxiliary power)LNG carrier (hotel load)

Certifications: ABS Type ApprovalDNV GL Type Approval

Decision Guide: Choose if: you need a reliable 600 kVA auxiliary source with high fuel efficiency, low emissions and compact footprint on vessels operating at 400 V/50 Hz. Avoid if: the installation requires full weather‑proof (IP65) protection, 60 Hz operation, or a lower initial investment outweighs efficiency gains.

Use Cases: Typically installed as the main auxiliary generator for hotel loads, emergency power supply, and shore‑power generation on large commercial vessels where space is limited and fuel economy is a priority. Often paired with an exhaust after‑treatment system to meet IMO Tier III standards in emission control areas.

Datasheet

ECO40 600kVA 400V 60Hz unverified

· brushless marine alternator

Power (kVA)

600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (ECO series) reduces fuel consumption and emissions
Robust H‑class insulation suitable for high temperature environments
Compact IP23 enclosure saves space in engine rooms
Low‑maintenance brushless design eliminates slip rings and brushes
Integrated control panel compatible with common marine automation systems

Weaknesses

Fixed 400 V output limits use on vessels standardized on higher bus voltages (e.g., 660 V)
Requires external cooling water system; not self‑cooled
Relatively high weight for the power rating can restrict installation options
Single unit provides no redundancy; failure disables all hotel load
Limited global service network may affect spare‑parts availability in some regions

Typical Vessels: Container shipBulk carrierTankerCruise ferryOffshore supply vesselResearch vessel

Decision Guide: Choose if: you need a high‑efficiency 600 kVA auxiliary generator for US‑flagged or other 60 Hz vessels, have limited engine‑room space and prefer low maintenance brushless technology. Avoid if: the vessel requires higher bus voltage (e.g., 660 V), needs built‑in cooling, or you require redundant power sources on a single shaft.

Use Cases: Typically installed as the main auxiliary generator supplying hotel services, emergency power, and occasional propulsion support on medium‑size commercial ships where space efficiency and fuel savings are priorities.

Datasheet

ECO40 600kVA 440V 50Hz unverified

· high-efficiency marine alternator

Power (kVA)

600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Up to ~96% efficiency reduces fuel consumption
Compact footprint relative to its 600 kVA rating saves engine‑room space
Class H insulation permits operation at elevated temperatures (up to 180 °C)
IP23 enclosure suitable for deck‑mounted installation with limited spray exposure
Proven reliability backed by MeccAlte/Caterpillar global service network

Weaknesses

IP23 provides only limited water ingress protection; not ideal for harsh wet environments without extra shielding
Requires regular brush/commutator maintenance (if brushed type)
Weight and size remain significant compared with newer oil‑free screw generators of similar power
External cooling system is required, adding installation complexity
Limited built‑in automation; often needs a separate control panel

Typical Vessels: Container ShipBulk CarrierTankerCruise VesselOffshore Supply Vessel

Certifications: IMO Type Approval (Resolution MSC.267)

Decision Guide: Choose if you need a mid‑size (≤600 kVA) generator with high efficiency, proven track record and can accommodate an IP23 enclosure; ideal for vessels where space is at a premium but full spray protection isn’t required. Avoid if the installation demands a fully sealed (IP55+) unit, brushless operation, or the lowest possible weight.

Use Cases: Typically installed as the main auxiliary generator on merchant ships to supply hotel loads and emergency power; also used on offshore platforms for continuous power where fuel efficiency is critical.

Datasheet

ECO40 600kVA 440V 60Hz unverified

· high-efficiency marine alternator

Power (kVA)

600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design delivering 600 kVA in a relatively small footprint
Class H insulation allows operation at elevated temperatures, improving reliability in hot climates
IP23 enclosure provides protection against splashing water while allowing easy access for maintenance
Four‑pole construction yields smoother output voltage and lower harmonic distortion
Proven MeccAlte brand reputation for durability and low lifecycle cost

Weaknesses

IP23 rating is not fully dust‑tight; unsuitable for environments with heavy particulate ingress
Weight and dimensions are higher than some modern oil‑free screw generators of comparable power
Requires a dedicated cooling system (air or water) to maintain class H temperature limits
Limited to 440 V output; vessels requiring 690 V or other standard voltages need additional transformers

Typical Vessels: Offshore Supply VesselFerryMedium‑size Tanker (product carriers)Container ship (auxiliary power)Research / Survey vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 600 kVA auxiliary generator with high temperature tolerance and proven service history on medium‑size vessels. Avoid if space is extremely limited, the installation environment is dusty or corrosive beyond IP23 protection, or if a higher voltage (e.g., 690 V) system is required without additional conversion equipment.

Use Cases: The ECO40 is typically installed as an auxiliary generator to supply shipboard hotel loads, emergency power, and sometimes as part of a dual‑generator configuration for redundancy on offshore support vessels and ferries. Its robust construction makes it suitable for hot tropical waters and continuous operation during long voyages.

Datasheet

ECO40 600kVA 690V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (ECO series) reduces fuel consumption
Robust cast‑iron frame and insulation class H allow operation at elevated temperatures
IP23 enclosure suitable for protected deck installations while providing easy access for maintenance
Four‑pole design delivers stable 50 Hz output with low vibration
Standard 690 V bus voltage matches most marine distribution systems

Weaknesses

IP23 rating offers limited protection against water ingress; not suited for harsh, wet deck environments without additional shielding
Physical size and weight are typical for a 600 kVA unit, requiring dedicated space and structural support
Brushless exciter still requires periodic inspection of bearings and cooling system
No built‑in redundancy; a single failure impacts full auxiliary power capacity
Limited to 50 Hz operation, not directly compatible with vessels that require 60 Hz without frequency conversion

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG/LPG carrier (auxiliary power)

Certifications: DNV

Decision Guide: Choose if you need a reliable 600 kVA auxiliary generator with high fuel efficiency and can accommodate an IP23 deck‑mounted installation. Avoid if the vessel operates in very wet or corrosive environments that demand higher ingress protection (e.g., IP55) or if space/weight constraints preclude a standard‑size marine alternator.

Use Cases: Typically installed as the main auxiliary generator on medium‑to‑large commercial vessels, providing power for hotel services, cargo handling equipment, and emergency lighting. Also used in shore‑power setups where a stable 690 V supply is required.

Datasheet

ECO40 600kVA 690V 60Hz unverified

· four‑pole synchronous marine generator

Power (kVA)

600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 600 kVA suitable for most auxiliary loads on mid‑size ships
Insulation class H provides reliable operation at elevated temperatures
Compact ECO40 series footprint eases installation in limited engine‑room space
IP23 enclosure protects against solid objects and water spray, sufficient for deck‑mounted applications
Mecc Alte’s long track record of marine reliability and modular maintenance access

Weaknesses

IP23 rating does not meet higher ingress protection (e.g., IP55) required in harsh wet environments
Designed for 60 Hz only, limiting use on vessels that operate on 50 Hz systems
Typical diesel‑driven generator weight can be substantial, affecting ballast calculations
May need an external cooling system depending on installation conditions
Fuel consumption is higher than newer high‑efficiency or hybrid generator sets

Typical Vessels: TankerBulk carrierContainer shipRo‑Ro ferryCruise/Passenger vessel

Decision Guide: Choose if you need a proven 600 kVA, 690 V/60 Hz auxiliary power unit with compact dimensions and are comfortable with an IP23 enclosure. Avoid if the installation requires higher ingress protection, operates on 50 Hz, or weight/space constraints demand a lighter, more efficient solution.

Use Cases: Commonly installed as the main auxiliary generator for hotel loads, emergency power supply, and occasional propulsion support on mid‑size merchant vessels where reliable, continuous power is critical.

Datasheet

ECO40 700kVA 400V 50Hz unverified

· low-emission diesel generator set

Power (kVA)

700

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency with ECO emission‑reduction technology (Tier II compliant).
Compact footprint and integrated control panel simplify installation on deck spaces.
Insulation class H allows operation at elevated temperatures, enhancing reliability in hot climates.
4‑pole construction provides stable voltage and frequency output for sensitive shipboard loads.
Standard 400 V/50 Hz output matches most auxiliary power systems on European‑type vessels.

Weaknesses

IP23 enclosure only protects against solid objects >12.5 mm and spray; not suitable for harsh, fully exposed marine environments without additional shielding.
Fixed voltage/frequency limits flexibility for vessels requiring 660 V or 60 Hz systems.
Weight and size are typical of a 700 kVA set, which may be restrictive on smaller vessels with limited space.
Air‑cooled design can be less effective in very high ambient temperatures, potentially increasing fuel consumption.
Single‑unit configuration provides no built‑in redundancy; additional sets required for critical redundancy.

Typical Vessels: Container shipBulk carrierCruise linerFerryOffshore supply vesselRo‑Ro passenger ship

Certifications: IMO D-2 (engine type approval)ABS Marine Equipment CertificationDNV GL Classification

Decision Guide: Choose if: you need a mid‑size (500–1000 kVA) auxiliary generator with low emissions, compact installation space and high thermal class. Avoid if: the vessel requires fully weather‑proof equipment (IP66+), higher voltage/frequency output, or built‑in redundancy without adding extra units.

Use Cases: Typically installed as a main auxiliary power source for ship services such as lighting, HVAC, cargo handling equipment, and emergency generators; also used in shore‑power arrangements on vessels calling at ports with stringent emission regulations.

Datasheet

ECO40 700kVA 400V 60Hz unverified

· compact high‑efficiency marine alternator

Power (kVA)

700

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal rating (Class H) allows operation at elevated temperatures with reduced cooling requirements
Compact footprint and relatively low weight compared with comparable 700 kVA units, saving valuable deck space
Four‑pole design provides stable voltage and frequency under varying load conditions
IP23 enclosure is suitable for typical marine deck environments while keeping the unit accessible for maintenance
Modular construction simplifies installation and routine servicing

Weaknesses

IP23 protection only guards against splashing water; not dust‑tight, limiting use in harsher compartments
Designed for 60 Hz operation – a separate 50 Hz version is required for markets outside North America
Initial purchase price can be higher than basic low‑efficiency competitors
Maximum output of 700 kVA may be insufficient for very large vessels that require >1 MW auxiliary power
Requires a dedicated cooling system (forced air or water) to maintain the high efficiency rating

Typical Vessels: Container shipBulk carrierProduct tankerCruise linerOffshore supply vesselLNG carrier (hotel load)

Decision Guide: Choose if: you need a reliable 700 kVA auxiliary generator for a 60 Hz fleet, value compact size and high temperature capability, and the installation area meets IP23 conditions. Avoid if: the vessel operates on a 50 Hz system, requires higher protection (IP44+), or demands power output beyond 700 kVA.

Use Cases: Typically installed as an auxiliary/main‑generator on medium‑size cargo vessels to supply hotel services, deck machinery, and emergency loads; also used in cruise ships for redundancy and in offshore support vessels where space is at a premium.

Datasheet

ECO40 700kVA 440V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

700

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency design reduces fuel consumption and emissions.
Brushless construction lowers maintenance requirements and improves reliability.
Insulation class H allows operation at elevated temperatures typical of marine environments.
IP23 enclosure provides protection against solid foreign objects, suitable for deck‑mounted installations.
Four‑pole configuration matches 1500 rpm diesel prime movers common on many vessels.

Weaknesses

IP23 rating does not protect against water spray; additional sealing may be required in harsh weather.
Physical size and weight are considerable for a 700 kVA unit, impacting installation space.
Requires an external cooling system (air or oil) to maintain temperature limits.
Not optimized for ultra‑compact or weight‑critical applications such as high‑speed ferries.

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a proven, high‑efficiency 700 kVA marine alternator with low maintenance brushless design and can accommodate its IP23 enclosure and size. Avoid if the installation demands higher ingress protection (e.g., IP54 or above), strict weight/space limits, or a fully sealed unit for extreme wet environments.

Use Cases: Commonly installed as an auxiliary generator to supply shipboard electrical loads, support emergency power systems, and provide shore‑power conversion on large commercial vessels where reliable medium‑voltage generation is required.

Datasheet

ECO40 700kVA 440V 60Hz unverified

· high‑efficiency diesel‑driven alternator

Power (kVA)

700

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 700 kVA in a relatively compact footprint
Class H insulation allows operation at elevated temperatures, improving reliability
Four‑pole design provides stable frequency and low vibration
Modular construction simplifies installation and maintenance on board
Proven MeccAlte brand reputation for marine durability

Weaknesses

IP23 rating offers only limited water protection; additional shielding may be required in harsh spray environments
Physical size and weight can be a constraint for smaller vessels or retrofits
Diesel‑fuel dependence – not suitable where LNG or hybrid power is mandated
Initial acquisition cost higher than lower‑rated generators
May require auxiliary sound‑proofing to meet strict noise regulations

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore support vesselNaval auxiliary

Decision Guide: Choose if: you need a reliable 600‑800 kVA main or emergency generator for medium to large vessels, value compact modular design and high temperature tolerance, and can accommodate an IP23 enclosure. Avoid if: the vessel is small, requires higher ingress protection (e.g., IP55), mandates alternative fuel sources, or has strict budget constraints.

Use Cases: Typically installed as a primary auxiliary generator supplying hotel loads on container ships, as a main emergency power source on tankers, or as shore‑power generation on offshore platforms where high reliability and quick maintenance access are critical.

Datasheet

ECO40 700kVA 690V 50Hz unverified

· diesel marine generator

Power (kVA)

700

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 700 kVA in a relatively compact footprint
Class H insulation allows operation at elevated temperatures
IP23 enclosure suitable for deck‑mounted installations with limited exposure to spray
Four‑pole design provides stable 50 Hz output and good torque characteristics
Integrated control system simplifies start‑up, monitoring and fault diagnostics

Weaknesses

IP23 protection is not sufficient for harsh marine environments requiring higher ingress protection (e.g., IP55)
Emissions compliance may require additional after‑treatment equipment to meet IMO Tier III standards
Fixed 690 V/50 Hz output limits use on vessels that operate on 60 Hz systems
Weight and mounting requirements can be significant for smaller vessels
Cooling system must be sized appropriately; inadequate ventilation reduces efficiency

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselFerry

Decision Guide: Choose if you need a reliable, high‑output auxiliary generator with a compact size and can accommodate an IP23 environment; especially suitable when Class H insulation and integrated control are priorities. Avoid if the installation demands higher ingress protection, strict IMO Tier III emissions without extra after‑treatment, or operation on 60 Hz power systems.

Use Cases: Commonly installed as the main auxiliary generator for hotel loads, emergency power supply, shore‑power generation, and to support dynamic positioning systems on large merchant vessels.

Datasheet

ECO40 700kVA 690V 60Hz unverified

· brushless marine alternator

Power (kVA)

700

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (700 kVA) suitable for main propulsion or hotel load on large ships
Brushless design reduces maintenance intervals and eliminates brush wear
Class H insulation allows operation in high‑temperature engine rooms
Compact, open IP23 enclosure simplifies installation and cooling in confined spaces
Widely supported by MeccAlte service network with proven field reliability

Weaknesses

Open IP23 enclosure provides limited protection against dust and water ingress; not suitable for harsh external environments
Single‑frequency (60 Hz) only – not ideal where dual‑frequency capability is required
Relatively large physical size and weight compared with newer high‑density generators (requires adequate engine‑room space)
Requires an external cooling system or forced ventilation to maintain temperature limits
No built‑in redundancy; a failure would impact the primary power source unless paired with another unit

Typical Vessels: Crude oil tankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a proven, high‑power (700 kVA) brushless generator for main or emergency power on large merchant vessels and have adequate engine‑room ventilation; avoid if the installation requires a fully sealed (IP55+) unit, dual‑frequency operation, or space‑critical compactness.

Use Cases: Commonly installed as the primary propulsion generator on tankers and container ships, as a hotel‑load generator on cruise vessels, or as an emergency power source on offshore supply platforms where reliable, low‑maintenance output is critical.

Datasheet

ECO40 800kVA 400V 50Hz unverified

· high-efficiency brushless alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

H‑class insulation allows higher temperature operation and improves power density
Compact size relative to its 800 kVA rating saves valuable engine‑room space
IP23 enclosure protects against dust and spray, suitable for most marine environments
Four‑pole design gives good low‑speed torque characteristics for direct coupling with diesel engines
Low fuel consumption thanks to the ECO series efficiency optimisation

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; additional shielding may be required in harsh sea conditions
Designed for 50 Hz only, limiting use on vessels that operate on 60 Hz systems
Higher initial purchase price compared with standard IEC‑type alternators of similar power
Requires adequate ventilation to maintain the high operating temperatures permitted by H‑class insulation

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a high‑efficiency, space‑saving generator for a 50 Hz vessel and can provide adequate ventilation and splash protection. Avoid if: the installation requires a higher ingress protection rating (e.g., IP55), operates on 60 Hz, or has strict weight constraints.

Use Cases: Commonly installed as an auxiliary power source on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency systems where compactness and fuel efficiency are priorities.

Datasheet

ECO40 800kVA 400V 60Hz unverified

· high-efficiency brushless alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint with 4‑pole design (1500 rpm at 60 Hz) suitable for limited engine‑room space
Class H insulation allows operation at elevated temperatures, improving reliability in hot climates
IP23 enclosure provides basic protection against dust and spray while keeping the unit lightweight
Brushless construction reduces wear and maintenance intervals compared with brushed generators
Rated 800 kVA meets the power demand of medium‑size vessels for hotel load and emergency supply

Weaknesses

IP23 rating is not fully sealed; additional housing may be required for harsh marine exposure
Limited to 60 Hz markets, making it unsuitable for vessels operating primarily on 50 Hz systems
External cooling system is needed for continuous full‑load operation, adding installation complexity
Higher initial purchase price than basic low‑efficiency alternators of similar rating
Physical size may still be large for very small craft or retrofits with severe space constraints

Typical Vessels: Container ships (auxiliary power)Bulk carriersTanker vesselsCruise ships and ferriesOffshore supply vessels

Decision Guide: Choose if you need a compact, high‑efficiency 800 kVA generator for 400 V/60 Hz auxiliary or emergency power on US‑flagged or other 60 Hz vessels and can provide additional environmental protection. Avoid if the installation environment demands a higher IP rating, if the vessel operates primarily on 50 Hz, or if budget constraints favor lower‑cost, lower‑efficiency units.

Use Cases: Typically installed as part of an auxiliary power plant to supply hotel loads, cargo handling equipment, and emergency systems on medium‑to‑large commercial vessels. Frequently paired with diesel engines in a genset configuration for redundancy and compliance with SOLAS requirements.

Datasheet

ECO40 800kVA 440V 50Hz unverified

· high-efficiency marine alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~96%) reduces fuel consumption and emissions
Compact modular construction saves space in engine rooms
H‑class insulation permits higher temperature operation and longer life
Robust 4‑pole design provides stable frequency at 50 Hz
IP23 enclosure suitable for typical marine environments with spray protection

Weaknesses

IP23 rating offers limited protection against heavy splashing or dust; additional shielding may be required in harsh conditions
Designed for 50 Hz only – not directly compatible with vessels that operate on 60 Hz systems
Initial purchase cost can be higher than standard low‑efficiency generators
Requires dedicated cooling system integration, adding installation complexity

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a compact, high‑efficiency generator of 800 kVA for a 50 Hz vessel and can accommodate an IP23 enclosure. Avoid if: the installation demands higher ingress protection (e.g., IP55) or must operate on 60 Hz power systems.

Use Cases: Commonly installed as part of the main propulsion generator set or as auxiliary power for hotel loads on large merchant vessels, where space savings and fuel efficiency are critical. Also used in emergency generator rooms when high reliability is required.

Datasheet

ECO40 800kVA 440V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and low fuel consumption thanks to modern design
Compact IP23 enclosure suitable for limited engine‑room space
Class H insulation allows operation at elevated temperatures
Four‑pole construction provides stable frequency and reduced vibration
Integrated protection relays simplify installation and commissioning

Weaknesses

Fixed 60 Hz output limits use on vessels standardized on 50 Hz systems
Single generator unit – no built‑in redundancy for critical loads
IP23 rating offers limited protection against water ingress in harsh marine environments
Requires compatible diesel engine speed range; may need a dedicated prime mover

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise liner (hotel load)Ferry

Decision Guide: Choose if you need a compact, high‑efficiency 800 kVA generator for 60 Hz hotel or emergency power on vessels with space constraints and can provide a dedicated prime mover. Avoid if your fleet operates primarily on 50 Hz grids, requires built‑in redundancy, or needs higher ingress protection than IP23.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, navigation equipment, and emergency power on medium‑size merchant vessels; also used in offshore platforms where a reliable 60 Hz source is required for instrumentation and crew accommodation.

Datasheet

ECO40 800kVA 690V 50Hz unverified

· high-efficiency brushless marine alternator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high efficiency (up to ~96%) reducing fuel consumption
Brushless design gives low maintenance and long service life
Compact for its power class, easing installation in engine rooms
Robust construction with insulation class H suitable for high temperature operation
IMO D‑2 type approval ensures compliance with international marine standards

Weaknesses

IP23 enclosure offers limited protection against water spray; not ideal for exposed deck locations
Physical size and weight are larger than newer ultra‑compact generator sets
Fixed 50 Hz output – not suitable where dual‑frequency (50/60 Hz) capability is required
Requires adequate ventilation to maintain cooling performance

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IMO D-2

Decision Guide: Choose if: you need a proven, high‑efficiency auxiliary generator with brushless reliability for 50 Hz systems and IMO D‑2 compliance; space is moderate and the installation area can be kept dry (IP23 sufficient). Avoid if: the vessel operates in harsh weather requiring higher ingress protection, demands dual‑frequency output, or has severe weight/space constraints.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, emergency power, cargo handling equipment, and sometimes propulsion support on diesel‑electric ships. Frequently found in engine rooms of medium‑to‑large commercial vessels where dependable continuous power is critical.

Datasheet

ECO40 800kVA 690V 60Hz unverified

· diesel-driven marine alternator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) suitable for large ship electrical loads
Class H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Four‑pole construction provides stable frequency and lower vibration compared with two‑pole designs
IP23 enclosure offers basic protection against dust and limited splashing, meeting typical marine auxiliary standards
Mecc Alte’s long heritage in marine generators gives proven field support and spare‑parts availability

Weaknesses

IP23 rating does not protect against heavy water spray or immersion; additional shielding may be required in harsh weather decks
Physical size and weight are substantial for an 800 kVA unit, limiting installation on vessels with tight engine‑room space
Traditional brush‑type construction can demand more frequent maintenance than newer brushless designs
Efficiency is lower than some modern electronically controlled diesel generators of comparable rating
No built‑in sound attenuation; external mufflers or acoustic enclosures are needed to meet noise regulations

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>10,000 TEU)Cruise linersOffshore supply vesselsLNG carriers with high auxiliary power demand

Decision Guide: Choose if you need a robust, high‑capacity generator for large auxiliary loads and can accommodate its footprint and basic IP23 protection. Avoid on vessels where space is at a premium, where higher splash protection (IP44+) is required, or when a brushless, ultra‑low‑noise solution is preferred.

Use Cases: Typically installed as the main auxiliary power source for shipboard hotel services, cargo handling equipment, and emergency generators on large tankers, container ships, and cruise vessels. Also used in offshore platforms where reliable high‑power generation is critical.

Datasheet

ECO40 1000kVA 400V 50Hz unverified

· synchronous marine alternator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1 MVA in a relatively compact footprint
Insulation class H allows operation at elevated temperatures typical on ships
Four‑pole design provides stable 50 Hz output for standard vessel electrical systems
IP23 enclosure offers splash protection suitable for most engine‑room environments
Proven Mecc Alte reputation for reliability and ease of maintenance

Weaknesses

IP23 rating does not protect against dust or heavy water ingress; unsuitable for harsh offshore exposure without additional shielding
Fixed 400 V/50 Hz output limits flexibility for vessels requiring 60 Hz or different voltage levels
Size and weight are larger than newer ultra‑compact generator sets, which may be a constraint in tight engine‑room layouts
Requires dedicated cooling water system; not a self‑ventilated unit

Typical Vessels: Cruise shipsContainer vesselsTankersLNG carriersOffshore supply vesselsNaval auxiliaries

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 1 MVA, 400 V/50 Hz generator with proven marine pedigree and can accommodate an IP23‑rated engine‑room environment. Avoid if the installation demands higher ingress protection (e.g., IP55), operation at 60 Hz, or extremely limited space.

Use Cases: Typically installed as a main auxiliary generator on large commercial ships to supply hotel loads, emergency power, and support propulsion auxiliaries; also used on offshore platforms where robust, high‑temperature capable generators are required.

Datasheet

ECO40 1000kVA 400V 60Hz unverified

· low-emission diesel genset

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Provides 1000 kVA at 400 V 60 Hz, suitable for large hotel‑load applications
Meets IMO Tier III emission standards, reducing NOx in ECAs
H‑class insulation allows operation at higher temperatures and improves reliability
Four‑pole design ensures stable voltage and frequency under varying loads
Compact IP23 enclosure fits typical engine‑room spaces while allowing easy maintenance

Weaknesses

IP23 rating offers limited protection against water ingress; additional shielding may be required in harsh environments
Designed for 60 Hz only, not suitable for vessels that need dual 50/60 Hz capability
Higher initial purchase price compared with standard non‑Tier III generators
Requires dedicated cooling‑water system integration, adding installation complexity
Weight and dimensions are substantial; may impact weight‑budget on smaller ships

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary

Decision Guide: Choose if you need a high‑capacity, low‑emission generator for large vessels operating in emission control areas and can accommodate an IP23 enclosure. Avoid if your vessel requires higher ingress protection (IP44+), dual‑frequency operation, or has strict weight/space constraints.

Use Cases: Commonly installed as the main auxiliary power source on large merchant ships to supply hotel loads, emergency power, and shore‑power generation; also used on offshore platforms where low emissions are mandated.

Datasheet

ECO40 1000kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MVA) suitable for large vessel auxiliary loads
H‑class insulation provides reliable operation at elevated temperatures
Compact IP23 enclosure fits typical engine‑room spaces while protecting against splashing water
Four‑pole design ensures stable 50 Hz frequency under varying load conditions
Mecc Alte’s long‑standing reputation for durability and low maintenance

Weaknesses

IP23 rating is only splash‑proof; not fully dust‑ or watertight for harsh environments
Physical size and weight can be significant, requiring ample engine‑room space
Single‑frequency (50 Hz) design limits use on vessels that require dual‑frequency capability
May need an external cooling system in high ambient temperature zones
Initial capital cost is higher than lower‑rated generators

Typical Vessels: Crude oil tankerContainer shipCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a reliable 1 MVA auxiliary power source at 440 V/50 Hz, value high temperature insulation and a proven manufacturer, and have sufficient engine‑room space. Avoid if: the installation requires a higher IP rating, dual‑frequency capability, or strict weight/size constraints.

Use Cases: Commonly installed as the main auxiliary generator on large commercial vessels to supply propulsion auxiliaries, hotel services, and emergency power; also used as standby generators for critical systems where continuous high‑power output is essential.

Datasheet

ECO40 1000kVA 440V 60Hz unverified

· high‑efficiency brushless alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1 MVA output in a relatively compact footprint
Class H insulation allows operation at elevated temperatures without derating
Built‑in AVR provides stable voltage and reduces auxiliary control equipment
IP23 enclosure protects against splashing water, suitable for typical engine‑room environments
Four‑pole design ensures smooth 60 Hz output with low ripple

Weaknesses

IP23 rating offers only splash protection; not dust‑tight or fully sealed for harsh marine exposure
Single‑frequency (60 Hz) – not suitable where dual 50/60 Hz capability is required
Requires dedicated ventilation/cooling system; not a self‑cooled unit
Physical size may still be limiting on very small vessels or retrofits
Standard model does not include integrated sound‑proofing, so additional muffling may be needed

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer ships (mid‑size)Tankers (product carriers)

Decision Guide: Choose if: you need a reliable 1 MVA, 440 V/60 Hz generator in a compact engine‑room layout and value Mecc Alte’s service network. Avoid if: the installation demands higher IP protection, dual‑frequency operation, or an integrated self‑cooled design.

Use Cases: The ECO40 is commonly installed as the main auxiliary power source on passenger vessels and offshore supply ships, providing propulsion support services, hotel loads, and emergency power when coupled with appropriate switchgear.

Datasheet

ECO40 1000kVA 690V 50Hz unverified

· marine alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 1 MVA in a relatively compact footprint.
Class H insulation permits continuous operation up to 180 °C, enhancing reliability under load variations.
IP23 enclosure protects against splashing water while allowing easy access for routine maintenance.
Four‑pole construction provides stable 50 Hz output with low harmonic distortion.
Broad compatibility with medium‑speed diesel engines and ease of integration into dual‑generator arrangements.

Weaknesses

IP23 rating offers limited protection against heavy spray or salt‑water immersion; additional shielding may be required in harsh environments.
Cooling relies on forced ventilation; performance can degrade if airflow is restricted.
Single‑unit configuration means loss of power unless a redundant generator set is installed.
Not directly suitable for vessels that operate on 60 Hz systems without frequency conversion equipment.
Spare parts and service support may be regionally variable, affecting lead times for repairs.

Typical Vessels: Cruise shipFerryOffshore supply vesselContainer shipProduct tanker

Decision Guide: Choose the ECO40 when you need a compact, high‑output 1 MVA generator for 50 Hz vessels that can accommodate class‑H insulation and have space for an IP23 enclosure. It is especially suitable where maintenance accessibility and integration with medium‑speed diesel engines are priorities. Avoid if the vessel operates in environments with heavy spray or requires higher ingress protection, needs a built‑in redundancy solution without adding another unit, or runs on 60 Hz power systems.

Use Cases: The ECO40 is typically installed as part of the main propulsion auxiliary power plant on cruise ships and ferries, providing hotel loads, navigation equipment, and emergency power. It is also used on offshore supply vessels and container ships where a single 1 MVA generator can meet peak hotel demand while being paired with a second unit for redundancy.

Datasheet

ECO40 1000kVA 690V 60Hz unverified

· High-efficiency marine alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Rated 1000 kVA at 690 V suitable for main or auxiliary shipboard power systems
H‑class insulation allows operation up to 180 °C, enhancing durability
Compact IP23 enclosure saves space in engine rooms while protecting against splash water
Four‑pole design delivers stable 60 Hz output with low vibration
Integrated control system simplifies monitoring and reduces auxiliary equipment

Weaknesses

IP23 provides limited protection; not fully watertight for heavy spray zones
690 V output may require additional step‑down transformers for low‑voltage loads
Higher initial capital cost compared with generic alternators of similar rating
Requires dedicated cooling water system and regular maintenance of bearings
Spare‑part logistics can be region‑specific, affecting lead times

Typical Vessels: Crude oil tankerContainer shipCruise linerOffshore supply vesselLNG carrier

Certifications: IMO Type Approval

Decision Guide: Choose if: you need a high‑efficiency 1000 kVA generator at the standard 690 V shipboard voltage, space is limited and an IP23 enclosure is acceptable, and classification societies require type approval. Avoid if: your installation demands higher ingress protection (IP44 or above), you primarily use low‑voltage distribution without transformers, or budget constraints outweigh efficiency gains.

Use Cases: The ECO40 is typically installed as a main propulsion generator on large tankers and container vessels, or as an auxiliary power source on cruise ships and offshore supply vessels where reliable high‑capacity electricity is critical for hotel loads, cargo handling equipment, and emergency systems.

Datasheet

ECO43 1000kVA 400V 50Hz unverified

· Low-emission diesel alternator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (ECO series) reduces fuel consumption and CO₂ emissions
Class H insulation permits higher operating temperatures and longer service life
Compact, deck‑mountable IP23 enclosure saves space in engine rooms
Four‑pole design provides stable frequency with reduced vibration
Integrated control panel simplifies monitoring and remote operation

Weaknesses

Diesel‑only fuel source – no hybrid or renewable option
IP23 rating offers limited protection against water jets and spray
Heavy unit (typical for 1 MVA generators) may affect weight distribution
Requires external cooling system on some installations
Fixed 400 V output may need step‑up transformers for higher voltage ship systems

Typical Vessels: Container shipBulk carrierTankerRo‑Ro vesselOffshore supply vesselCruise liner (auxiliary power)

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 1 MVA auxiliary generator with low emissions, compact deck mounting and robust thermal performance for conventional diesel‑powered vessels. Avoid if the installation requires higher voltage output, explosion‑proof (IP66) protection, or hybrid/renewable power integration.

Use Cases: Typically installed as main auxiliary generators supplying hotel loads, emergency power, cargo handling equipment, and propulsion auxiliaries on medium to large commercial ships where fuel efficiency and emissions compliance are priorities.

Datasheet

ECO43 1000kVA 400V 60Hz unverified

· high‑efficiency marine alternator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (low fuel consumption) for a 1000 kVA rating
Robust H‑class insulation allowing operation at elevated temperatures
Compact, low‑profile design suited to limited engine‑room space
Four‑pole construction provides stable frequency and reduced vibration
IP23 enclosure offers protection against splash water and solid debris

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; may need additional shielding in harsh environments
Designed for 60 Hz only, limiting use on vessels requiring 50 Hz power systems
Physical size and weight can be substantial for smaller craft
Requires dedicated cooling system (forced air or water) which adds installation complexity
Higher upfront cost compared with basic commercial‑grade generators

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 1000 kVA generator for US‑spec 60 Hz vessels, value high efficiency and robust temperature tolerance, and have space for a standard engine‑room installation. Avoid if: the vessel operates on 50 Hz systems, requires a higher IP rating for severe spray or immersion conditions, or has strict weight/space constraints.

Use Cases: Typically installed as the main propulsion auxiliary generator on large merchant ships, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. Also used in offshore platforms where high‑capacity, reliable power is required under marine conditions.

Datasheet

ECO43 1000kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) in a relatively compact footprint for its rating
Insulation class H enables operation in elevated ambient temperatures up to ~180 °C
Four‑pole design delivers stable 50 Hz frequency suitable for most European‑type vessels
Established Mecc Alte brand reputation and global service support network
IP23 enclosure protects against splashing water and dust, fitting typical engine‑room environments

Weaknesses

IP23 rating does not protect against heavy spray or direct seawater exposure, limiting placement options
Fixed 50 Hz output may require frequency conversion on vessels that operate on a 60 Hz system
Physical size and weight are larger than newer high‑efficiency generators of comparable power
Requires regular oil‑lubricated bearing maintenance (no oil‑free design)
May need an external automatic voltage regulator if not supplied as standard

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose the ECO43 when you need a proven 1000 kVA generator with robust temperature tolerance and can accommodate an IP23 enclosure in a relatively dry engine‑room area. Avoid it if the installation requires full splash protection, operation on a 60 Hz system without converters, or the smallest possible footprint and weight.

Use Cases: The ECO43 is commonly installed as the main auxiliary generator on medium‑size cargo ships and offshore support vessels, supplying hotel loads, navigation systems, and emergency power where a reliable, high‑temperature capable unit is required.

Datasheet

ECO43 1000kVA 440V 60Hz unverified

· brushless alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency design (ECO series) reduces fuel consumption
Brush‑less construction lowers maintenance intervals
Class H insulation permits operation at elevated temperatures
Compact modular layout simplifies installation in limited engine‑room spaces
Four‑pole configuration provides stable frequency and low vibration

Weaknesses

IP23 enclosure offers only splash protection; not suitable for harsh spray zones without additional shielding
Fixed 60 Hz output limits use on vessels that standardise on 50 Hz systems
Physical size may be larger than newer high‑power‑density generators of similar rating
Higher initial capital cost compared with basic industrial alternators

Typical Vessels: Cruise shipFerryOffshore supply vesselContainer shipProduct tanker

Decision Guide: Choose if you need a proven, low‑maintenance 1 MVA generator with class H insulation for moderate marine environments and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), strict 50 Hz operation, or extreme weight/space constraints.

Use Cases: Commonly installed as a main auxiliary generator to supply shipboard hotel loads, emergency power, and shore‑power conversion on medium‑to‑large commercial vessels.

Datasheet

ECO43 1000kVA 690V 50Hz unverified

· high-efficiency marine alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high electrical efficiency (up to ~98%) reducing fuel consumption
Compact modular construction saves installation space
Class H insulation allows operation at elevated temperatures
Integrated control system with remote monitoring capabilities
Designed for IMO Tier III emissions compliance when paired with after‑treatment

Weaknesses

IP23 rating offers only splash protection, not full dust‑tight sealing
Provided as an alternator only – requires a separate prime mover (diesel engine)
Fixed 690 V output may need additional transformers for vessels requiring different voltages
Higher upfront cost compared with standard marine generators
Physical size may still be large for small craft or retrofits with limited space

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vesselLNG carrier

Certifications: IMO Tier III

Decision Guide: Choose if you need a high‑efficiency, low‑emission power source for medium to large vessels operating in Emission Control Areas and have space for an external diesel engine. Avoid if the vessel requires fully sealed equipment, lower initial cost, or a compact generator set that includes its own prime mover.

Use Cases: Typically installed as part of auxiliary power plants on ocean‑going cargo ships, cruise ships, and offshore vessels to supply hotel loads and support propulsion auxiliaries while meeting strict emission regulations. Also used in retrofits where existing generators are upgraded to higher efficiency and Tier III compliance.

Datasheet

ECO43 1000kVA 690V 60Hz unverified

· high-efficiency marine synchronous generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high electrical efficiency (≈96%) reducing fuel consumption
Compact IP23 enclosure suitable for deck or engine‑room installation
H‑class insulation provides long thermal life and low maintenance
Four‑pole design gives stable voltage at 60 Hz with good overload capability
Integrated control panel compatible with common ship automation systems

Weaknesses

Limited to 690 V/60 Hz – not directly suitable for 50 Hz or lower‑voltage ship grids without transformers
Requires forced ventilation; enclosure is not fully weather‑tight (IP23)
Higher upfront capital cost compared with basic alternators of similar rating
Physical size and weight may be restrictive on vessels with tight space constraints

Typical Vessels: Cruise shipContainer vesselTankerLNG carrierOffshore supply vessel

Certifications: IMO Type ApprovalDNV‑GL classificationABS approval

Decision Guide: Choose if you need a reliable 1000 kVA main generator for a 690 V, 60 Hz ship power system and value high efficiency and compact deck installation. Avoid if your vessel operates on a 50 Hz grid, requires lower voltage output without additional transformers, or has severe space/weight limitations.

Use Cases: Typically installed as a primary auxiliary generator on large commercial ships to supply propulsion‑auxiliary loads, hotel services on cruise liners, and emergency power for critical systems.

Datasheet

ECO43 1250kVA 400V 50Hz unverified

· brushless marine alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates regular maintenance of brushes and slip rings.
High insulation class (H) provides good temperature tolerance and reliability.
Compact footprint suitable for vessels with limited engine‑room space.
Four‑pole construction gives stable voltage and frequency at varying loads.
Standard 400 V output matches most shipboard distribution systems.

Weaknesses

IP23 enclosure offers only protection against solid objects >12.5 mm, not dust or water ingress; unsuitable for harsh marine environments without additional shielding.
Limited to 400 V – higher‑voltage ships must use step‑up transformers.
Noise level is typical for air‑cooled generators and may require extra acoustic insulation on noise‑sensitive vessels.
Weight can be significant for small craft, affecting overall payload capacity.

Typical Vessels: Product TankerContainer ShipBulk CarrierCruise VesselOffshore Supply Vessel

Decision Guide: Choose if you need a reliable, medium‑size generator with brushless technology for standard 400 V/50 Hz shipboard power and have space constraints. Avoid if the installation requires higher voltage output, IP65 protection, or ultra‑low noise levels without additional mitigation.

Use Cases: Commonly installed as an auxiliary or emergency generator on medium‑size merchant vessels to supply hotel loads, cargo handling equipment, and critical systems during main engine outages.

Datasheet

ECO43 1250kVA 400V 60Hz unverified

· brushless marine alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) suitable for main ship service loads
Brushless design reduces maintenance and improves reliability
Class‑H insulation allows operation at elevated temperatures
Compact IP23 enclosure saves space in engine rooms
Four‑pole construction provides good overload capability

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for harsh, wet environments
Designed for 60 Hz systems only, limiting use on vessels standardized to 50 Hz
Relatively high initial cost compared with lower‑spec alternatives
Requires a dedicated diesel engine coupling and cooling system integration
Weight and size may still be significant for smaller vessels

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable, high‑output brushless alternator for a 400 V/60 Hz electrical system on a large commercial vessel and can accommodate an IP23 enclosure. Avoid if the ship operates on 50 Hz, requires higher ingress protection (e.g., IP55), or has strict budget constraints.

Use Cases: The ECO43 is typically installed as a main generator driven by a medium‑speed diesel engine to supply shipboard propulsion auxiliaries, hotel loads, and cargo handling equipment. It can also serve as an emergency power source when paired with appropriate control gear.

Datasheet

ECO43 1250kVA 440V 50Hz unverified

· brushless synchronous generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates the need for regular brush maintenance, reducing downtime.
High efficiency (typically >94%) lowers fuel consumption for auxiliary power.
Insulation class H allows operation at elevated temperatures, enhancing reliability in hot engine rooms.
Compact IP23 enclosure fits into confined spaces while still providing basic protection against dust and solid objects.
Proven track record in large commercial vessels with strong after‑sales support from MeccAlte.

Weaknesses

IP23 rating offers limited protection against water ingress; additional sealing may be required for wet environments.
Large 1250 kVA output results in a heavy unit, impacting overall weight budget of the installation.
Fixed 440 V output may necessitate step‑up/step‑down transformers for vessels with different voltage standards.
Requires skilled personnel for proper alignment and commissioning due to its high power rating.
Cooling is air‑cooled; in very hot climates supplemental cooling might be needed.

Typical Vessels: Container shipCruise linerOil tankerLNG carrierOffshore supply vessel

Decision Guide: Choose if you need a high‑power (≈1.25 MVA) brushless generator with excellent efficiency and robust temperature tolerance for large commercial vessels. Avoid if the installation demands a higher IP rating, lower weight, or direct compatibility with voltage systems other than 440 V without additional transformers.

Use Cases: Main auxiliary power plant supplying hotel loads, cargo handling equipment, and emergency power on large ocean‑going ships; often paired with diesel engine sets to provide continuous generation for propulsion support and shore‑side power when docked.

Datasheet

ECO43 1250kVA 440V 60Hz unverified

· brushless marine alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1250 kVA in a compact footprint suitable for shipboard engine rooms
Class H insulation allows operation at elevated temperatures without derating
IP23 rating provides adequate splash protection for typical indoor marine environments
Four‑pole design gives stable 60 Hz output with low harmonic distortion
Proven MeccAlte reliability and straightforward maintenance (brushless exciter)

Weaknesses

Limited to 60 Hz operation – not suitable for vessels standardized on 50 Hz systems
IP23 enclosure does not protect against dust or heavy water ingress; requires a dry, ventilated space
Physical size and weight may be excessive for small craft or retrofit projects with tight spaces
Requires dedicated cooling (forced air or liquid) to manage heat at full load
Higher upfront cost compared with lower‑rated or generic alternators

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if: you need a reliable 1250 kVA, 440 V/60 Hz source for large vessels, have an indoor engine‑room with adequate ventilation, and value high temperature capability. Avoid if: the vessel operates on 50 Hz, requires a higher IP rating (e.g., IP55), has severe space or weight constraints, or you need a lower‑cost, lower‑power unit.

Use Cases: Typically installed as the main auxiliary generator for hotel power, emergency power supply, and to drive shipboard auxiliaries such as pumps, compressors, and HVAC systems on large commercial ships. Often paired with diesel engines in a genset set to meet SOLAS and classification society requirements for redundancy and continuous operation.

Datasheet

ECO43 1250kVA 690V 50Hz unverified

· high‑efficiency brushless alternator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

H‑class insulation allows higher temperature operation and longer life
Brush‑less design reduces maintenance intervals
Compact size relative to its 1.25 MW rating, suitable for medium‑size vessels
IP23 enclosure provides protection against splashing water in typical engine rooms
Four‑pole construction delivers stable 50 Hz output with good overload capability

Weaknesses

Limited to 50 Hz operation; not directly usable on 60 Hz ship systems
IP23 rating is not fully dust‑tight, requiring careful placement in harsh environments
Physical footprint may still be large for vessels with very tight engine‑room space
Initial acquisition cost can be higher than lower‑efficiency competitors
Requires dedicated cooling water system integration

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if: you need a reliable mid‑size (≈1 MW) auxiliary generator with high efficiency, low maintenance brushless design and marine‑grade H‑class insulation for 690 V/50 Hz systems. Avoid if: the vessel operates on 60 Hz, space is extremely constrained, or an explosion‑proof enclosure is required.

Use Cases: Typically installed as a main auxiliary generator to supply hotel load, emergency power and occasional propulsion support on medium‑to‑large commercial vessels; also used in hybrid configurations where high efficiency reduces fuel consumption.

Datasheet

ECO43 1250kVA 690V 60Hz unverified

· high-efficiency marine alternator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high efficiency (typically >95%) reducing fuel consumption and emissions
Robust H‑class insulation allowing higher temperature operation and longer service life
Compact footprint for a 1250 kVA rating, saving valuable engine‑room space
Integrated control and monitoring system compatible with common ship automation platforms
Proven reliability of MeccAlte’s marine‑grade design and low maintenance intervals

Weaknesses

IP23 enclosure provides limited protection against water spray; requires careful placement in dry zones
Relatively heavy for its power class, impacting weight budgeting on smaller vessels
Fixed 690 V output may not match ships that standardise on higher voltage busbars (e.g., 11 kV)
Initial purchase price can be higher than basic alternators without the high‑efficiency features
Requires a dedicated cooling system (water‑cooled) and associated piping

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if you need a high‑efficiency, reliable 1250 kVA generator for vessels that operate on a 690 V bus and can accommodate an IP23 enclosure. Avoid if the vessel requires higher voltage output, stricter ingress protection, or has severe weight constraints.

Use Cases: Commonly installed as a main auxiliary generator on medium‑to‑large commercial ships, providing propulsion support power, hotel load supply, and emergency generation where fuel efficiency and compact size are priorities.

Datasheet

ECO43 1500kVA 400V 50Hz unverified

· high‑efficiency marine alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

1500 kVA output provides ample auxiliary power for large ships
Class H insulation allows operation at elevated temperatures and improves durability
Compact footprint relative to its rating, facilitating deck installation
ECO series design meets low‑emission standards (Euro VI/MARPOL Annex VI)
Proven track record of reliability in long‑haul marine applications

Weaknesses

IP23 enclosure offers limited protection against dust and water ingress; not suitable for harsh, wet environments without additional shielding
Noise level higher than newer fully enclosed (e.g., IP55) generator sets
Fixed 50 Hz frequency limits use to regions with 50 Hz power systems
Weight can be substantial, requiring reinforced mounting structures
Limited integration options for modern digital control and remote monitoring without retrofit

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: DNVABS

Decision Guide: Choose if you need a high‑capacity (≈1500 kVA) auxiliary generator for 50 Hz vessels, value proven durability and class‑H insulation, and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection, lower acoustic signature, or operation on 60 Hz power systems.

Use Cases: Typically installed as part of a diesel‑generator set to supply hotel loads, cargo handling equipment, and emergency power on large tankers, container ships, bulk carriers, cruise ships, and offshore support vessels operating in European/Asian markets.

Datasheet

ECO43 1500kVA 400V 60Hz unverified

· brushless alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates wear parts, reducing maintenance intervals
High overload capability (typically 110% of rated load for short periods)
Compact modular layout simplifies installation in engine rooms
Class‑H insulation allows operation in high ambient temperature zones
Standard marine enclosure (IP23) provides protection against splashing water and dust

Weaknesses

Physical size and weight are significant for a 1500 kVA unit, requiring ample space
Requires dedicated cooling system (forced air or liquid) to maintain temperature limits
Fixed 60 Hz output may limit use on vessels that operate at 50 Hz regions without frequency converters
Integration with ship's control and protection systems can be complex if not using MeccAlte’s own controller suite

Typical Vessels: Container shipsBulk carriersTankersCruise vesselsOffshore support vessels

Certifications: ABSDNV GL

Decision Guide: Choose if: you need a reliable, low‑maintenance 1500 kVA generator for new builds or major retrofits where space allows and a brushless design is preferred. Avoid if: vessel size constraints are tight, you require 50 Hz output without converters, or you prefer an integrated generator‑set with built‑in control electronics.

Use Cases: The ECO43 is typically installed as the main propulsion auxiliary generator on large merchant ships, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. It is also used in offshore supply vessels where high reliability and overload capability are critical during dynamic positioning operations.

Datasheet

ECO43 1500kVA 440V 50Hz unverified

· high‑efficiency marine alternator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint relative to its 1500 kVA rating, saving engine room space
Robust cast‑iron construction with H‑class insulation for long life and low maintenance
Four‑pole design provides good overload capability (up to 110% for short periods)
Standard 440 V/50 Hz output matches most European‑type ship electrical systems
IP23 enclosure simplifies integration in dry engine rooms while allowing easy inspection

Weaknesses

Open‑frame IP23 rating offers limited protection against water spray and dust; additional shielding may be required in harsh environments
Designed for 50 Hz only, unsuitable for vessels operating on 60 Hz systems without a frequency converter
Weight and size are still considerable compared with newer lightweight aluminum‑housing generators
Requires external cooling (air or water) which adds auxiliary piping and maintenance

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑capacity 1500 kVA generator for a 440 V/50 Hz system and have space for an IP23 enclosure with optional extra shielding. Avoid if: the vessel operates on 60 Hz, requires higher ingress protection (IP55+), or demands the lightest possible unit for very tight engine‑room constraints.

Use Cases: Typically installed as a main service generator on large commercial ships to supply propulsion auxiliaries, cargo handling equipment, and hotel loads; also used as an emergency generator where redundancy is required.

Datasheet

ECO43 1500kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density delivering 1500 kVA in a relatively compact footprint
Class‑H insulation permits continuous operation at elevated temperatures (up to ~180 °C)
IP23 enclosure protects against splashing water and dust, suitable for engine‑room environments
Four‑pole design ensures stable 60 Hz output at standard marine engine speeds
MeccAlte’s proven reliability and low‑maintenance design

Weaknesses

Only a single frequency (60 Hz) – not suited for vessels requiring dual‑frequency systems
IP23 rating is not fully sealed; additional protection may be needed in heavy spray zones
Physical size and weight can be larger than ultra‑compact alternatives, affecting installation space
Requires compatible engine coupling and alignment due to specific mounting dimensions
Spare parts availability may vary by region compared with more widely stocked brands

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if you need a reliable 1500 kVA, 60 Hz generator with robust temperature tolerance and can accommodate an IP23 enclosure. Avoid if the vessel requires dual‑frequency capability, higher ingress protection (e.g., IP55), or has severe space/weight constraints.

Use Cases: Commonly installed as part of the main auxiliary power plant on medium to large commercial vessels, providing hotel load, cargo handling equipment power, and emergency generation for safety systems.

Datasheet

ECO43 1500kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1500 kVA) suitable for large vessel service loads.
Class H insulation permits operation up to 180 °C, improving reliability in hot or demanding environments.
Compact IP23 enclosure protects against splashing water while keeping the unit relatively space‑efficient.
Four‑pole construction delivers stable 50 Hz frequency with reduced vibration and mechanical stress.
Mecc‑Alte’s reputation for robust engineering results in low routine maintenance requirements.

Weaknesses

IP23 rating only guards against splashing; not adequate for fully exposed or high‑spray locations where IP44+ is preferred.
The 1500 kVA rating may be oversized for smaller ships, leading to lower load factors and higher fuel consumption per kW generated.
Designed exclusively for 50 Hz operation; vessels requiring 60 Hz would need additional frequency conversion equipment.
Physical dimensions and weight are substantial, potentially limiting installation options in confined engine rooms.

Typical Vessels: Cruise shipContainer vesselRo‑Ro ferryOffshore supply vesselLNG carrier

Decision Guide: Choose the ECO43 when a high‑capacity, reliable 50 Hz power source is needed for large vessels and space permits an IP23 enclosure. Avoid it on smaller ships, in environments demanding higher ingress protection, or where 60 Hz supply is required.

Use Cases: The generator is commonly installed as part of the main propulsion plant auxiliary power system on cruise liners, container carriers, and offshore support vessels, supplying hotel loads, cargo handling equipment, and emergency power.

Datasheet

ECO43 1500kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) suitable for demanding hotel or cargo‑handling loads
H‑class insulation provides excellent thermal tolerance and long service life
Four‑pole design delivers stable frequency at 60 Hz with good efficiency
IP23 enclosure protects against dust and spray, meeting typical deck‑room requirements
Proven Mecc Alte brand reputation for reliability in marine environments

Weaknesses

IP23 rating does not protect against heavy water ingress; unsuitable for exposed wet‑deck installations
Large physical size and weight may require substantial mounting space and structural support
Fixed 60 Hz frequency limits use on vessels operating primarily at 50 Hz regions
No built‑in cooling system; relies on external ventilation which must be properly designed
Higher initial cost compared with lower‑rated generators

Typical Vessels: Product TankerBulk CarrierCruise Ship (hotel power)Offshore Supply VesselLarge Container Ship

Decision Guide: Choose if you need a robust, high‑capacity auxiliary generator for a vessel that operates in 60 Hz regions and can accommodate an IP23‑rated unit with external cooling. Avoid if the installation requires higher ingress protection (IP66/67), must run on 50 Hz, or has strict weight/space constraints.

Use Cases: Commonly installed as part of the auxiliary power plant on large commercial vessels to supply hotel services, cargo handling equipment, and emergency loads. It is also used on offshore support ships where a reliable high‑output generator is required for dynamic positioning and crew amenities.

Datasheet

ECO46 1500kVA 400V 50Hz unverified

· marine alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) suitable for large vessels' main or auxiliary generation needs
Class H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Four‑pole design provides stable 50 Hz frequency with low vibration
Proven Italian engineering reputation for durability and long service life
Standardized dimensions compatible with many existing marine generator sets

Weaknesses

IP23 enclosure offers only splash protection; not ideal for areas exposed to heavy spray or flooding
Large physical size and weight may limit installation in space‑constrained engine rooms
Requires external cooling system (air or water) which adds complexity
No built‑in redundancy features; depends on auxiliary systems for fault tolerance
Limited to 50 Hz markets – not directly suitable for 60 Hz regions without redesign

Typical Vessels: Container shipsBulk carriersTankersCruise linersOffshore supply vesselsLNG carriers

Certifications: IMO D-2

Decision Guide: Choose if you need a robust, high‑capacity alternator for 400 V/50 Hz shipboard power and can accommodate an IP23 enclosure with external cooling. Avoid if the installation environment requires higher ingress protection (e.g., IP55) or if weight/space constraints are critical.

Use Cases: Typically installed as the core electrical machine in main or auxiliary generator sets on large commercial vessels, providing propulsion‑support power, hotel loads, and emergency supply where high reliability and temperature tolerance are required.

Datasheet

ECO46 1500kVA 400V 60Hz unverified

· marine alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) in a compact footprint suitable for medium‑size vessels
Class H insulation allows operation at elevated temperatures typical of engine rooms
Modular construction simplifies installation, alignment and routine maintenance
Standard 400 V/60 Hz output matches most modern shipboard electrical distribution systems

Weaknesses

IP23 enclosure provides only limited protection against water and dust; not ideal for exposed deck locations
Designed exclusively for 60 Hz operation, limiting suitability on vessels that run primarily on 50 Hz grids
Requires an external diesel engine or prime mover – it is not a complete generator set
Physical size may be larger than integrated genset packages that combine engine and alternator in one housing

Typical Vessels: Cruise shipFerryOffshore supply vesselContainer shipBulk carrier

Decision Guide: Choose if: you need a reliable, high‑capacity 1500 kVA alternator for a 400 V/60 Hz shipboard power system and can provide adequate enclosure protection. Avoid if: the installation requires higher ingress protection (e.g., IP55) or must operate on a 50 Hz network, or you prefer an all‑in‑one generator set.

Use Cases: The ECO46 is typically installed as the main auxiliary generator on cruise liners and ferries, providing bulk power for hotel services, navigation equipment, and emergency loads. It is also used on offshore supply vessels where a robust, high‑temperature tolerant alternator is required to drive large electrical loads such as winches or dynamic positioning systems.

Datasheet

ECO46 1500kVA 440V 50Hz unverified

· marine alternator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) in a relatively compact footprint
Robust four‑pole construction provides stable frequency and low vibration
Insulation class H allows operation at elevated temperatures, enhancing reliability
IP23 enclosure suitable for deck‑mounted installations with standard marine spray protection
Mecc Alte’s reputation for durable, low‑maintenance generators

Weaknesses

IP23 rating offers limited protection against harsh weather; additional shielding may be required for exposed locations
Large physical size and weight compared with some newer high‑efficiency units
Designed for 50 Hz markets only – not directly suitable for vessels operating on 60 Hz systems
Higher upfront cost relative to basic low‑power alternatives
Requires a dedicated cooling system (air‑forced) which adds complexity

Typical Vessels: Container shipsBulk carriersTankersCruise linersOffshore supply vesselsLNG carriers

Decision Guide: Choose if you need a proven, high‑capacity generator for 440 V/50 Hz systems on large commercial or offshore vessels and value the reliability of an established Italian brand. Avoid if your installation demands higher ingress protection (e.g., IP55), operates on 60 Hz, has severe space constraints, or requires the lowest possible capital cost.

Use Cases: Typically installed as a main or auxiliary generator plant on large cargo ships, cruise vessels, and offshore support units to supply hotel loads, cargo handling equipment, propulsion auxiliaries, and emergency power. Often paired with diesel engine drives in a genset configuration for continuous operation or redundancy.

Datasheet

ECO46 1500kVA 440V 60Hz unverified

· brushless alternator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95% at rated load) reduces fuel consumption and emissions
H‑class insulation permits operation at elevated temperatures, extending service life
Brushless design lowers maintenance intervals and eliminates brush wear
Compact footprint for a 1.5 MVA unit compared with conventional alternators
IP23 enclosure provides adequate protection against splashing water and dust in typical engine rooms

Weaknesses

IP23 is not fully sealed; additional protective measures may be needed in harsh marine environments
Large physical size and weight can limit installation on vessels with constrained generator spaces
Only available at 60 Hz, making it unsuitable for ships standardized on 50 Hz systems
Higher upfront capital cost relative to lower‑rated or less efficient alternatives

Typical Vessels: Cruise shipContainer vesselTankerBulk carrierOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a high‑power (1.5 MVA) auxiliary generator with superior efficiency and robust thermal capability for large merchant or offshore vessels operating on 60 Hz. Avoid if space, weight, or the requirement for a fully sealed (IP66/68) enclosure outweighs the efficiency benefits, or if the vessel operates on a 50 Hz power system.

Datasheet

ECO46 1500kVA 690V 50Hz unverified

· high‑efficiency marine alternator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

H‑class insulation permits higher operating temperatures and longer service intervals
Compact footprint relative to its 1500 kVA rating, saving deck space
Robust IP23 enclosure suitable for protected deck installations
Four‑pole design provides good voltage regulation at 50 Hz
Proven reliability in long‑haul commercial fleets

Weaknesses

IP23 protection is not fully sealed; unsuitable for harsh, wet‑deck exposure without additional shielding
Relatively heavy compared with newer lightweight aluminium‑frame generators
Brush‑type construction (if applicable) requires periodic maintenance
Fixed 690 V/50 Hz output limits flexibility for vessels operating on 60 Hz systems
Limited integration options for modern digital control platforms without retrofit

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IMO Type Approval

Decision Guide: Choose if you need a proven, high‑power (≤1500 kVA) alternator with compact dimensions and H‑class insulation for a 690 V/50 Hz marine installation. Avoid if the vessel requires fully sealed equipment for exposed deck mounting, lighter weight solutions, or operation on 60 Hz systems.

Use Cases: Typically installed as part of the main propulsion generator set or emergency power plant on large commercial vessels, supplying both propulsion and hotel loads where space efficiency and thermal robustness are critical.

Datasheet

ECO46 1500kVA 690V 60Hz unverified

· high‑efficiency diesel‑driven marine generator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

1500 kVA output provides ample auxiliary power for large ships
Insulation class H allows operation in high‑temperature engine rooms
Four‑pole design gives stable 60 Hz frequency with low vibration
IP23 enclosure is robust against dust and limited splashing, suitable for marine environments
Proven MeccAlte brand known for reliability and easy maintenance

Weaknesses

Large physical size and weight may limit installation in space‑constrained vessels
IP23 rating does not protect against strong water jets or submersion
Single‑frequency (60 Hz) only; not suitable where dual‑frequency is required
Higher initial capital cost compared with generic off‑shore generators
Requires dedicated cooling water system and regular oil changes

Typical Vessels: Container shipCruise linerBulk carrierOffshore supply vesselLNG carrier

Certifications: IMO D-2

Decision Guide: Choose if you need a proven, high‑output 1500 kVA generator for main or emergency power on large vessels and can accommodate its size and cooling requirements. Avoid if space is at a premium, a higher IP rating is mandatory, or dual‑frequency capability is required.

Use Cases: Typically installed as the primary auxiliary generator on container ships, cruise ships, and offshore supply vessels to run hotel loads, cargo handling equipment, and emergency systems; also used in standby power sets for LNG carriers where high reliability is essential.

Datasheet

ECO46 2000kVA 400V 50Hz unverified

· high-efficiency brushless alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption and emissions.
Compact, space‑saving design relative to its 2 MW rating.
Class H insulation permits higher operating temperatures and longer service life.
IP23 enclosure protects against splashing water while allowing easy maintenance access.
Designed for direct coupling with a wide range of marine diesel engines up to 2000 kW.

Weaknesses

IP23 rating is only splash‑proof; not fully dust‑tight, which may require extra protection in dusty environments.
Fixed 4‑pole speed (1500 rpm at 50 Hz) limits use in variable‑speed or low‑speed applications.
No built‑in redundancy or parallel operation features; external control gear is required for paralleling sets.
Air‑cooled design may be less effective in very hot climates without additional cooling measures.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore support vesselCruise ship

Certifications: ISO 8528-5

Decision Guide: Choose if you need a compact, high‑efficiency 2 MW auxiliary generator for standard 50 Hz shipboard power and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP54), variable‑speed operation, or built‑in redundancy for critical emergency power.

Use Cases: Commonly installed as a main auxiliary generator on medium‑sized merchant vessels to supply hotel loads and emergency power, as well as on offshore platforms where space is limited but reliable high‑power output is required.

Datasheet

ECO46 2000kVA 400V 60Hz unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 2 MVA in a relatively compact footprint (ECO series).
H‑class insulation permits operation at elevated temperatures, improving reliability in hot climates.
Four‑pole construction provides stable frequency and low vibration, suitable for sensitive shipboard loads.
Proven Mecc Alte brand reputation with extensive service network in Europe and North America.
IP23 enclosure allows easy integration into existing engine rooms while still protecting against dust and incidental water spray.

Weaknesses

IP23 rating may require additional protective housing for harsh marine environments or open deck installations.
Designed for 60 Hz systems only – not suitable for vessels operating on 50 Hz grids without frequency conversion.
No built‑in exhaust after‑treatment; compliance with IMO Tier III emissions must be verified per installation.
Limited published data on weight and dimensions can complicate detailed space planning.
Higher initial cost compared with some low‑speed diesel generators of similar rating.

Typical Vessels: Ro‑Ro ferriesOffshore supply vesselsMedium‑size container shipsCruise ship auxiliary power unitsYachts and luxury motor vessels

Decision Guide: Choose if: you need a reliable 2 MVA auxiliary source on a 60 Hz vessel, have limited engine‑room space, and value Mecc Alte’s service support. Avoid if: the installation requires a higher IP rating, operates on a 50 Hz system, or must meet strict IMO Tier III emissions without additional after‑treatment.

Use Cases: The ECO46 is typically installed as an auxiliary generator in the engine room of medium‑sized commercial vessels, providing power for hotel services, navigation equipment, and emergency loads. It is also used on offshore support ships where a compact, high‑output generator is needed to complement main propulsion plants.

Datasheet

ECO46 2000kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2 000 kVA) suitable for large hotel loads
Four‑pole construction gives stable frequency and lower vibration
Class H insulation allows higher operating temperatures, improving reliability in harsh marine environments
IP23 enclosure provides protection against dust and limited water ingress, suitable for deck installations

Weaknesses

Relatively large physical size and weight may limit installation space on smaller vessels
IP23 rating does not protect against heavy spray or immersion, requiring careful placement
Brush‑type excitation system requires periodic maintenance and brush replacement
Designed for 50 Hz operation only; not directly compatible with 60 Hz shipboard systems

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer ships (mid‑size)Tankers (large) for hotel power

Decision Guide: Choose if: you need a proven, high‑capacity 2 000 kVA generator for 440 V/50 Hz shipboard power and have sufficient space for its size; the vessel operates primarily in regions using 50 Hz systems. Avoid if: space is at a premium, you require 60 Hz output, or you need an enclosure with higher water‑ingress protection (e.g., IP44).

Use Cases: Typically installed as the main generator set on passenger vessels and offshore supply ships to supply hotel services, navigation equipment, and cargo handling gear; also used as a high‑capacity auxiliary unit on large tankers and container carriers for redundancy.

Datasheet

ECO46 2000kVA 440V 60Hz unverified

· high‑efficiency marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2000 kVA in a relatively compact footprint
Robust 4‑pole construction with class H insulation for reliable operation up to 180 °C
IP23 enclosure provides basic protection against splashing and dust while allowing easy access for maintenance
Designed for 60 Hz systems, matching US‑flagged vessel power standards
Proven MeccAlte reputation for durability and long service intervals

Weaknesses

IP23 rating offers limited ingress protection; not suitable for harsh offshore spray zones without additional shielding
Class H insulation limits ambient temperature margin compared with newer class F/H+ designs
Noise level can be higher than low‑speed, insulated generators used on passenger vessels
No integrated exhaust after‑treatment – may require external solutions to meet the latest emission rules

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise liner (auxiliary power)Offshore supply vessel

Decision Guide: Choose if: you need a proven 2000 kVA generator for 60 Hz US‑type electrical systems, value compact size and straightforward maintenance, and operate in environments where IP23 protection is sufficient. Avoid if: the installation requires higher ingress protection (IP55+), ultra‑low noise, or must meet the newest emission standards without auxiliary treatment.

Use Cases: Typically installed as a main propulsion generator on large tankers or as an auxiliary power source on cruise ships and offshore supply vessels, where high output and reliable operation are critical and the engine room environment is controlled.

Datasheet

ECO46 2000kVA 690V 50Hz unverified

· high‑efficiency synchronous marine alternator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Eco series design delivers up to 5% lower fuel consumption compared with standard generators of similar size
H‑class insulation permits operation at higher temperatures, extending service life in hot engine rooms
Compact IP23 enclosure fits typical auxiliary generator spaces while protecting against splashing water
Proven reliability from MeccAlte’s long maritime heritage and extensive field support network
Standard 690 V output matches most shipboard distribution systems, simplifying integration

Weaknesses

Physical size and weight are larger than newer lightweight aluminum‑frame generators of comparable rating
IP23 protection does not guard against dust ingress; additional sealing may be required in harsh environments
Requires an external cooling system (air or water) which adds to installation complexity
Fixed 690 V output may need step‑up/step‑down transformers for vessels with non‑standard bus voltages
Initial purchase price is higher than generic, non‑type‑approved units

Typical Vessels: Cruise shipContainer vesselBulk carrierTankerOffshore support vessel

Certifications: ISO 8528-5

Decision Guide: Choose if you need a proven, high‑power (2 MW) auxiliary generator with excellent fuel efficiency and robust temperature tolerance for medium‑ to large‑size vessels. Avoid if space, weight, or higher ingress protection (e.g., IP54+) are critical constraints, or if the vessel operates on a non‑standard voltage system that would require additional conversion equipment.

Use Cases: Typically installed in the main auxiliary generator room to supply hotel loads, cargo refrigeration, and emergency power. Frequently used as part of a dual‑generator configuration on cruise ships and large tankers where redundancy and fuel economy are paramount.

Datasheet

ECO46 2000kVA 690V 60Hz unverified

· brushless high-efficiency alternator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates regular brush maintenance and reduces downtime.
High efficiency (typical >95%) lowers fuel consumption for auxiliary generation.
Insulation class H permits operation at elevated temperatures, enhancing reliability in hot climates.
Compact IP23 enclosure suitable for deck‑mounted installations with limited space.
Four‑pole construction delivers stable 60 Hz output with low vibration.

Weaknesses

IP23 rating offers only limited protection against water and dust; additional shielding may be required in harsh marine environments.
Designed for 60 Hz systems, making it unsuitable for vessels standardized on 50 Hz power.
Large 2000 kVA output can be oversized for small or medium‑size ships, leading to unnecessary weight and space usage.
Requires a dedicated cooling water system; improper integration can affect performance.

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore support vessels

Decision Guide: Choose if: you need a reliable 2 MW auxiliary power source, operate a 690 V/60 Hz electrical system, value low maintenance brushless technology, and have space for an IP23‑rated deck unit. Avoid if: the vessel is limited to 50 Hz grids, requires higher ingress protection (e.g., IP55), or has strict weight/space constraints that make a larger generator impractical.

Use Cases: Commonly installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling equipment, dynamic positioning thrusters, and emergency generators on large commercial vessels where high continuous power and reliability are critical.

Datasheet

ECO46 2500kVA 400V 50Hz unverified

· four-pole synchronous generator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2500 kVA) suitable for large hotel loads and cargo handling equipment
Insulation class H provides good thermal endurance and reliability
Four‑pole design offers stable voltage regulation at 50 Hz
Mecc Alte reputation for robust construction and long service life
Standard IP23 enclosure meets typical marine auxiliary room requirements

Weaknesses

IP23 rating only protects against solid objects >12.5 mm and water spray; not suitable for harsh, wet environments without additional protection
Designed for 50 Hz operation only – not directly compatible with 60 Hz systems
Physical size and weight can be significant, requiring ample engine‑room space
May require regular brush maintenance if not a fully brushless design (model‑specific details unavailable)
Limited to fixed voltage 400 V; flexibility for other bus configurations is reduced

Typical Vessels: Container shipCruise linerVLCC / tankerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a proven, high‑capacity 2500 kVA auxiliary generator for a 400 V/50 Hz system and have sufficient engine‑room space with standard ventilation. Avoid if the installation requires higher ingress protection (e.g., IP55), operation at 60 Hz, or very compact equipment.

Use Cases: Commonly installed as the main shipboard auxiliary generator on large commercial vessels to supply hotel services, cargo handling gear, and emergency power; also used in offshore platforms where a reliable high‑output source is required.

Datasheet

ECO46 2500kVA 400V 60Hz unverified

· high-efficiency marine alternator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high power output (2500 kVA) in a compact footprint
H‑class insulation allows operation at elevated temperatures
Four‑pole design ensures stable 60 Hz frequency under load
IP23 enclosure provides protection against splashing and dust ingress typical of engine rooms
Proven reliability from MeccAlte’s long marine heritage

Weaknesses

IP23 rating is not splash‑proof for heavy spray; higher IP ratings require additional housing
Designed only for 60 Hz systems – unsuitable for vessels standardized on 50 Hz
Large power rating entails significant weight and requires robust mounting structures
External cooling system may be needed in high ambient temperature zones
Initial acquisition cost is higher than lower‑rated alternatives

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselLNG carrier with high auxiliary demand

Decision Guide: Choose if: you need a single‑unit generator delivering ≥2 MW at 400 V 60 Hz, operate in environments where IP23 protection is sufficient, and value the proven durability of MeccAlte’s marine alternators. Avoid if: your vessel requires 50 Hz power, higher ingress protection (e.g., IP55), or you have strict weight‑budget constraints.

Use Cases: Typically installed as a main auxiliary generator on large ocean‑going vessels to supply shipboard hotel loads, cargo handling equipment, and emergency power. Also used in hybrid propulsion schemes where high‑capacity electrical generation is required for battery charging and shore‑power support.

Datasheet

ECO46 2500kVA 440V 50Hz unverified

· brush-less marine alternator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2.5 MVA) in a compact footprint for large vessels
H‑class insulation provides excellent thermal endurance and reliability
Four‑pole design matches standard 1500 rpm marine prime‑mover speeds at 50 Hz
IP23 rating is adequate for dry, ventilated engine‑room environments
Proven European manufacturer with long service history in marine applications

Weaknesses

IP23 enclosure offers only splash protection; not suitable for dusty or harsh external locations
No integrated control panel – requires separate governor and monitoring system
Designed for 50 Hz operation only, limiting use on vessels requiring 60 Hz power
Physical size and weight are typical of high‑power alternators, demanding adequate space and support structure
May require additional cooling or ventilation in high ambient temperature zones

Typical Vessels: Container shipCruise linerLNG carrierOil tankerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 2.5 MVA source at 440 V/50 Hz for main or emergency service power on large vessels, and you have a protected engine‑room that meets IP23 requirements. Avoid if: the installation demands higher ingress protection (e.g., IP54), integrated control electronics, or operation at 60 Hz.

Use Cases: Typically installed as a primary ship service generator on large commercial ships, providing power for propulsion auxiliaries, cargo handling equipment, hotel loads, and emergency systems. Also used in offshore platforms where robust, high‑capacity alternators are required.

Datasheet

ECO46 2500kVA 440V 60Hz unverified

· medium-speed marine alternator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2500 kVA in a compact footprint
Robust class H insulation allows operation at elevated temperatures
Four‑pole design provides smooth output and lower vibration
IP23 enclosure suitable for protected deck or engine‑room installations
Proven track record from MeccAlte with extensive service network

Weaknesses

IP23 protection is limited; not fully dust‑tight or splash‑proof for harsh environments
Designed for 60 Hz only – unsuitable where 50 Hz standards are required
Typical brushed design requires periodic brush inspection/replacement
Noise and vibration levels higher than some low‑speed, oil‑free alternatives
Weight and mounting requirements may be demanding on smaller vessels

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: DNV GL Type Approval

Decision Guide: Choose if you need a reliable 2500 kVA, 60 Hz generator with compact size and proven manufacturer support for medium‑size cargo or passenger vessels. Avoid if the installation demands higher ingress protection (IP54+), operation on 50 Hz systems, or ultra‑low noise/maintenance solutions.

Use Cases: Commonly installed as a main auxiliary generator on large merchant ships, providing hotel power and emergency supply; also used as a primary propulsion generator on vessels where medium‑speed engines are preferred for fuel efficiency.

Datasheet

ECO46 2500kVA 690V 50Hz unverified

· high‑efficiency marine alternator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

H‑class (Class H) insulation allows higher temperature operation and longer service life
Compact, modular design that fits standard 690 V shipboard bus systems
High efficiency (≈96 %) reduces fuel consumption for auxiliary power
Robust IP23 enclosure provides protection against dust and limited water spray typical of engine rooms
Low maintenance with brushless construction and proven Mecc Alte reliability

Weaknesses

IP23 rating does not protect against heavy water ingress; additional shielding may be required in very wet environments
Designed for 50 Hz only, limiting use on vessels that operate on a 60 Hz power system
Physical size and weight are larger than some integrated diesel‑generator sets of comparable kVA
Higher upfront cost compared with basic alternators lacking H‑class insulation

Typical Vessels: Container shipCruise linerOil tankerLNG carrierOffshore supply vesselBulk carrier

Decision Guide: Choose if: you need a high‑power (≈2.5 MVA) auxiliary generator with very high efficiency and H‑class insulation for long‑duration operation on a 690 V, 50 Hz system. Avoid if: the vessel requires a higher IP rating, operates on 60 Hz, or has strict space/weight constraints that favor smaller integrated sets.

Use Cases: Typically installed as main auxiliary power source or emergency generator on large commercial vessels to supply propulsion‑related hotel loads, cargo handling equipment, and critical shipboard systems. Frequently paired with diesel engines in a genset configuration for fuel‑efficient operation during cruising and port stays.

Datasheet

ECO46 2500kVA 690V 60Hz unverified

· high‑efficiency marine synchronous alternator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2500 kVA in a compact footprint suitable for large vessels
Class H insulation allows operation up to 180 °C, enhancing reliability in hot engine rooms
Four‑pole design provides stable 60 Hz output with low harmonic distortion
IP23 enclosure balances protection against splashing water while keeping cooling efficiency high
Proven MeccAlte brand reputation for durability and long service intervals

Weaknesses

IP23 rating offers limited protection against dust and heavy spray; not ideal for exposed deck installations
Weight and size are still substantial compared to newer lightweight aluminum‑frame generators
Standard cooling relies on forced air; may require additional ventilation in confined spaces
Limited built‑in monitoring features – external control system often needed for condition monitoring

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 2500 kVA auxiliary source with high temperature tolerance for large commercial vessels and have adequate engine‑room ventilation. Avoid if: the installation requires higher ingress protection (IP55+) or ultra‑lightweight equipment for space‑critical applications.

Use Cases: Commonly installed as a main auxiliary generator on tankers, container ships and cruise liners to supply hotel loads, cargo handling gear, and emergency power; also used on offshore support vessels where robust, continuous operation is critical.

Datasheet

Stamford/Cummins

156

HC4 100kVA 400V 50Hz unverified

· air-cooled marine generator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 100 kVA in a relatively small footprint
Built‑in automatic voltage regulator and remote monitoring capability
Cummins global service network ensures parts availability and support
Insulation class H provides good thermal endurance for continuous operation
Standard 4‑pole design runs at 1500 rpm, compatible with most marine drive systems

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh wet decks without additional shielding
Noise level is moderate and may require acoustic treatment in passenger areas
Designed for 50 Hz operation only – not a direct fit for vessels requiring 60 Hz power
Ventilation requirements can increase installation complexity on tightly‑packed engine rooms
Maximum output limited to 100 kVA, which may be insufficient for larger vessel loads

Typical Vessels: Container shipRo‑Ro ferryOffshore supply vesselCruise linerCoastal cargo vessel

Certifications: IMO Type Approval

Decision Guide: Choose if you need a reliable, compact 100 kVA generator for 400 V/50 Hz auxiliary power on vessels with limited engine‑room space and want Cummins after‑sales support. Avoid if the installation requires higher ingress protection (IP55+), lower acoustic signature, or operation at 60 Hz.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on medium‑size commercial ships; also used as a standby set for redundancy in cruise and ferry applications.

Datasheet

HC4 100kVA 400V 60Hz unverified

· brushless high‑speed alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 100 kVA in a relatively small footprint.
Brush‑less design reduces routine maintenance and improves reliability.
Standard marine enclosure (IP23) suitable for deck or engine‑room installation.
Insulation class H provides good thermal endurance for continuous operation.
Widely supported by Cummins service network and spare parts availability.

Weaknesses

Only rated for 60 Hz; not directly usable on vessels requiring 50 Hz power without a frequency converter.
Noise and vibration levels higher than low‑speed, large‑diameter generators.
Limited overload capability compared with larger marine gensets.
External cooling system may be required in hot climates, adding complexity.
Enclosure IP23 offers limited protection against water ingress; not suitable for harsh wet‑deck exposure.

Typical Vessels: Container shipCruise linerOffshore supply vesselFerryNaval auxiliary

Certifications: IMO D-2DNV GL Type ApprovalABS Approved

Decision Guide: Choose if you need a compact, brush‑less 100 kVA generator for 400 V/60 Hz hotel and auxiliary loads on vessels that already operate on 60 Hz systems and value low maintenance. Avoid if the ship requires 50 Hz power, ultra‑quiet operation, or higher voltage ratings beyond 400 V.

Use Cases: Commonly installed as emergency generators, hotel‑load gensets, or for powering deck machinery, navigation equipment, and auxiliary services on medium‑size commercial vessels where space is at a premium.

Datasheet

HC4 100kVA 440V 50Hz unverified

· high‑speed diesel generator set

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for space‑constrained engine rooms
Proven Cummins reliability with extensive service network
Integrated control panel simplifies operation and monitoring
High overload capability (up to 110 % for short periods)
Meets modern emission standards (Euro III/IV) out of the box

Weaknesses

Higher fuel consumption at low loads compared with medium‑speed units
Increased noise and vibration typical of high‑speed engines
Requires regular oil changes and quality diesel to avoid wear
Limited redundancy when installed as a single generator on larger ships
Enclosure IP23 offers limited protection against water ingress in harsh environments

Typical Vessels: Offshore supply vesselFerryContainer feederSmall tankerCruise ship auxiliaryYacht / mega‑yacht

Certifications: ABSDNV GL

Decision Guide: Choose if you need a compact, high‑power auxiliary set with fast start‑up and proven Cummins support, especially on vessels where space is at a premium and emissions compliance is required. Avoid if the primary concern is fuel efficiency at low load or if you prefer a medium/low‑speed engine for quieter operation and longer service intervals.

Use Cases: Typically installed as an auxiliary or emergency power source to run hotel loads, navigation equipment, cargo handling gear, and safety systems on commercial ships and large yachts. Frequently paired with automatic transfer switches for seamless switchover during main‑engine failures.

Datasheet

HC4 100kVA 440V 60Hz unverified

· high-speed diesel generator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint – suitable for vessels with limited engine‑room space
Integrated control system provides automatic voltage regulation and fault diagnostics
Meets modern emissions standards (EPA Tier 2/3) for reduced exhaust impact
Proven reliability of Cummins engine combined with Stamford alternator design
Quick start‑up time, ideal for emergency power or frequent cycling

Weaknesses

Higher fuel consumption at low loads compared with medium‑speed generators
Noise and vibration levels are greater than slower‑running sets
Limited to 100 kVA – not adequate as primary power source on larger ships
Requires fresh‑water cooling system, adding plumbing complexity
Single‑unit redundancy may be insufficient for critical vessels without an additional set

Typical Vessels: Offshore supply vessel (OSV)Crew boat / patrol craftCoastal tankerFerry (auxiliary power)Tugboat

Certifications: ABSDNV‑GLLloyd's Register

Decision Guide: Choose if: you need a reliable, space‑saving auxiliary generator up to 100 kVA on a vessel with limited engine‑room and must meet current emissions rules. Avoid if: the ship requires higher continuous power (>150 kVA), ultra‑low noise operation, or maximum fuel efficiency at low loads.

Use Cases: Commonly installed as the main service generator on small offshore supply vessels, crew boats, and coastal tankers, or as an emergency backup unit on ferries and patrol ships where rapid start‑up and compact size are critical.

Datasheet

HC4 100kVA 690V 50Hz unverified

· diesel‑driven high‑speed generator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and low weight compared with larger low‑speed gensets – ideal for vessels with limited engine‑room space
Standard 690 V three‑phase output matches most marine electrical distribution systems, simplifying integration
Cummins/Stamford reputation for reliability and worldwide service support
High efficiency at rated load (≈38%–40% thermal efficiency) reduces fuel consumption
Simple maintenance access with open IP23 enclosure for routine inspections

Weaknesses

Open IP23 enclosure provides limited protection against harsh weather or salt spray; additional shielding may be required in corrosive environments
Maximum continuous output of 100 kVA may be insufficient for larger vessels or high‑power hotel loads
Noise level can be higher than low‑speed, water‑cooled gensets, often necessitating acoustic enclosures
Limited redundancy – a single unit must meet all auxiliary demand unless paired with another set
Cooling relies on engine coolant system; improper integration can affect performance in extreme ambient temperatures

Typical Vessels: Platform Supply Vessel (PSV)Offshore Support VesselFerrySmall Container ShipBulk Carrier (auxiliary power)Yacht / Luxury vessel

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a proven, compact 100 kVA auxiliary generator that fits tight engine‑room spaces and matches the standard 690 V marine bus, with easy access for maintenance and strong global support. Avoid if your vessel requires higher continuous power, operates in highly corrosive or exposed environments without additional enclosure, or has strict noise‑abatement requirements that exceed what an open‑type HC4 can provide.

Use Cases: The HC4 100 kVA set is commonly installed as the main auxiliary generator on offshore supply vessels and ferries to power hotel loads, navigation equipment, and emergency systems. It also serves as a standby or secondary genset on small container ships and bulk carriers where space constraints preclude larger low‑speed generators.

Datasheet

HC4 100kVA 690V 60Hz unverified

· diesel‑driven alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for vessels with limited machinery space
High efficiency at rated load, reducing fuel consumption
Robust Class H insulation allows operation in high ambient temperatures
Proven Cummins/Stamford reliability and global service network
Standard 690 V three‑phase output matches most marine distribution systems

Weaknesses

IP23 enclosure provides only limited dust protection; not fully sealed against water ingress
Noise level higher than low‑speed, large‑bore generators, may require additional acoustic treatment
Maximum continuous power of 100 kVA limits use on larger vessels or high‑density hotel loads
High‑speed engine has shorter overhaul intervals compared with low‑speed alternatives

Typical Vessels: Offshore supply vesselFerrySmall container shipCruise ship auxiliary power unitTugboat

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a compact, reliable 100 kVA generator for standard 690 V marine distribution and have access to Cummins service support. Avoid if the vessel requires higher power output, fully sealed (IP‑rated) equipment for harsh weather exposure, or ultra‑low noise operation.

Use Cases: Typically installed as an auxiliary generator supplying hotel loads, navigation systems, and emergency power on medium‑size commercial vessels; also used in shore‑power conversion packages where a stable 690 V three‑phase source is required.

Datasheet

HC4 125kVA 400V 50Hz unverified

· high-speed marine alternator

Power (kVA)

125

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 125 kVA in a relatively small footprint.
Class H insulation allows operation at elevated temperatures, improving reliability in hot climates.
IP23 enclosure provides adequate protection for typical shipboard environments while keeping the unit lightweight.
Four‑pole design gives good voltage regulation and low harmonic distortion.
Widely supported by Cummins service network, simplifying spares and maintenance.

Weaknesses

IP23 rating is insufficient for harsh corrosive or splash‑zone installations; higher IP ratings are required in those areas.
Limited to 50 Hz operation – not suitable for vessels that need 60 Hz power systems.
Being a high‑speed unit, it may have shorter service intervals compared with low‑speed generators of similar rating.
No built‑in dual‑fuel capability; requires diesel fuel only.

Typical Vessels: Offshore supply vesselFerryResearch / survey shipPatrol boatContainer feeder

Decision Guide: Choose if you need a compact, high‑power‑density auxiliary generator for a 50 Hz fleet and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (e.g., IP66) or dual‑fuel operation.

Use Cases: Commonly installed as an auxiliary generator to supply hotel loads, emergency power, or as a secondary source for propulsion auxiliaries on medium‑size commercial and government vessels.

Datasheet

HC4 125kVA 400V 60Hz unverified

· brushless diesel generator

Power (kVA)

125

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 125 kVA in a relatively small footprint, useful where space is limited.
Brush‑less design reduces routine maintenance and improves reliability.
Insulation class H allows operation at higher ambient temperatures without derating.
IP23 splash‑proof enclosure is suitable for deck‑mounted installations exposed to sea spray.
Global Cummins service network provides spare parts and technical support.

Weaknesses

IP23 rating does not protect against dust or heavy ingress, limiting placement in harsh environments.
60 Hz output requires frequency conversion on vessels standardized on 50 Hz systems.
High‑speed diesel engines have higher specific fuel consumption at low loads compared with low‑speed generators.
Noise and vibration levels are greater than those of larger, slower‑running units.
Limited redundancy – a single unit must be sized correctly for peak hotel load.

Typical Vessels: Offshore supply vesselTugboatFerryMedium‑size container ship (auxiliary power)Cruise ship hotel load support

Decision Guide: Choose if: you need a compact, quick‑starting auxiliary generator for 400 V 60 Hz systems and have limited installation space; you value low maintenance brushless design and worldwide Cummins support. Avoid if: the vessel operates on a 50 Hz electrical system, requires dust‑tight protection, or prioritises ultra‑low noise and fuel consumption at part load.

Use Cases: Typically installed as an auxiliary generator for hotel services (lighting, HVAC, galley) on medium‑size vessels; also used as emergency power source where rapid start‑up is critical. The unit can be paired with a frequency converter to supply 50 Hz loads when required.

Datasheet

HC4 125kVA 440V 50Hz unverified

· Stamford HC 4‑pole marine alternator

Power (kVA)

125

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and relatively low weight for a 125 kVA unit
High efficiency with class H insulation allowing operation in warm climates
Proven reliability from Cummins‑Stamford integration and widespread service network
Built‑in voltage regulator simplifies installation and reduces auxiliary equipment
Standard 440 V output matches most marine distribution systems

Weaknesses

IP23 enclosure offers limited protection against water spray; not suitable for harsh, wet deck installations
Maximum continuous power of 125 kVA may be insufficient for larger vessels or high‑load scenarios
Single‑unit design provides no inherent redundancy; a second generator is required for critical loads
Noise level can be higher than low‑speed alternatives, requiring additional acoustic insulation on small craft
Overload capability limited to short periods; sustained overload may reduce service life

Typical Vessels: Coastal passenger ferriesOffshore supply vessels (OSV)Patrol and coast guard boatsYachts and mega‑yachtsSmall container feeders and feeder‑liners

Decision Guide: Choose if you need a compact, efficient 125 kVA generator for vessels under ~5,000 GT where space is at a premium and a proven Cummins‑Stamford system is desired. Avoid if the installation requires higher IP protection, greater power output, or built‑in redundancy without adding a second unit.

Use Cases: Typically installed as the main auxiliary generator on small to medium passenger ferries, as an emergency/backup source on offshore supply vessels, and as primary shore‑power generation on yachts where space and weight constraints dominate.

Datasheet

HC4 125kVA 440V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

125

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Cummins/Stamford reliability with extensive fleet experience
Class H insulation allows operation in high ambient temperature zones
Compact 4‑pole construction fits limited engine‑room spaces
Integrated control and monitoring compatible with Cummins engines
Standard 440 V/60 Hz output matches most shipboard distribution systems

Weaknesses

IP23 enclosure offers only limited protection against water ingress; extra sealing may be required in harsh marine climates
125 kVA rating may be undersized for larger vessels or high‑power emergency loads
Weight and mounting dimensions are relatively large compared with newer lightweight alternator designs
Requires a compatible Cummins prime mover; flexibility with other engine brands is limited

Typical Vessels: Product tankerMedium bulk carrierOffshore supply vesselFerryCruise ship auxiliary generatorContainer feeder

Certifications: DNV GL ApprovalABS ClassificationLloyd's Register Type Approval

Decision Guide: Choose if you need a reliable, medium‑size (125 kVA) auxiliary generator that integrates seamlessly with Cummins engines and can tolerate high ambient temperatures. Avoid if the vessel requires higher standby power, fully sealed (IP66/68) enclosures for extreme weather exposure, or a lighter‑weight alternator solution.

Use Cases: Typically installed as an auxiliary or emergency generator in the engine room to supply ship service loads such as lighting, HVAC, cargo pump control, and navigation equipment. Frequently used on vessels where space is at a premium but dependable power is essential for safe operation.

Datasheet

HC4 125kVA 690V 50Hz unverified

· four‑pole brushless marine alternator

Power (kVA)

125

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability with decades of service in the maritime sector
High overload capability (typically 150 % for short periods)
Compact footprint suitable for limited engine room space
Integrated control and monitoring compatible with common ship automation systems
Class H insulation allows operation up to 180 °C, extending service life

Weaknesses

IP23 enclosure provides only limited protection against water ingress; not suitable for harsh wet‑deck installations
Maximum output of 125 kVA may be insufficient for larger vessels requiring higher hotel load capacity
Weight and size are greater than some newer lightweight generator sets
Requires regular oil maintenance (oil‑lubricated bearings) unlike oil‑free alternatives
Limited to 690 V nominal; not directly compatible with systems that use higher voltage standards without step‑down gear

Typical Vessels: Container shipBulk carrierTankerCruise liner (hotel load)Offshore supply vesselFerry

Certifications: ABSDNV GLLloyd's Register

Decision Guide: Choose if: you need a dependable 125 kVA auxiliary generator for vessels already equipped with Stamford/Cummins systems, space is at a premium, and you value a long‑track record of marine service. Avoid if: the installation requires higher voltage or fully sealed (IP55+) protection, you need power above 125 kVA, or you prefer oil‑free, ultra‑lightweight units for very tight weight budgets.

Use Cases: Typically installed as an emergency/auxiliary generator to supply hotel services, navigation equipment, and cargo handling gear on medium‑size merchant ships; also used as a dedicated generator for propulsion auxiliaries on vessels with diesel‑electric drives.

Datasheet

HC4 125kVA 690V 60Hz unverified

· brushless marine alternator

Power (kVA)

125

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) and good power density for its size
Proven reliability on a wide range of US‑flag vessels (60 Hz systems)
Direct compatibility with Cummins engine control systems and standard 690 V bus
Low vibration and noise due to brushless design
Simple maintenance – no brushes, built‑in voltage regulator

Weaknesses

IP23 enclosure offers limited protection against water spray; may need additional shielding in harsh environments
Maximum output of 125 kVA can be undersized for larger vessels or high‑hotel‑load ships
Designed for 60 Hz only – not suitable for 50 Hz fleets without a frequency converter
Cooling relies on ambient airflow; installation must ensure adequate ventilation

Typical Vessels: TugboatOffshore supply vesselFerrySmall container or feeder shipCruise‑ship hotel‑load auxiliary

Decision Guide: Choose if you need a compact, reliable 125 kVA generator for a US‑flag (60 Hz) vessel and are already using Cummins propulsion engines. Avoid if the installation requires higher ingress protection, greater power output, or operation on a 50 Hz system.

Use Cases: Commonly installed as an auxiliary or emergency generator to supply hotel loads, navigation equipment, and deck machinery on medium‑size commercial vessels; also used in dual‑generator sets for redundancy on offshore support ships.

Datasheet

HC4 150kVA 400V 50Hz unverified

· diesel‑driven marine generator set

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability with decades of service in the maritime sector
Compact footprint relative to its 150 kVA rating, easing installation in confined engine rooms
High insulation class (H) allows operation in harsh temperature environments
Robust IP23 enclosure protects against splashing water and dust while permitting easy access for maintenance
Standardized interface with Cummins diesel engines simplifies integration and spare‑parts logistics

Weaknesses

IP23 rating is not fully weather‑proof; a protected shelter is required for outdoor mounting
Fixed 400 V/50 Hz output may require additional transformers or converters on vessels operating at 60 Hz or different voltages
Noise and vibration levels are higher than newer electronically controlled generators, requiring acoustic insulation in sensitive spaces
Overload capability is limited to short‑duration bursts; sustained loads above rating demand derating of other ship systems
Requires a matching Cummins engine model for optimal performance, limiting flexibility with alternative prime movers

Typical Vessels: Container shipsBulk carriersTankersCruise linersOffshore supply vesselsFerries

Certifications: ABSDNV GL

Decision Guide: Choose if you need a rugged, proven 150 kVA auxiliary generator that integrates directly with Cummins diesel engines and fits within standard engine‑room spaces. Avoid if the vessel requires fully weather‑proof equipment, operation at 60 Hz, or the latest low‑noise electronic control systems.

Use Cases: Typically installed as an auxiliary or emergency power source to supply hotel loads, cargo handling gear, navigation equipment, and lighting on commercial vessels; also used in standby mode for redundancy alongside main propulsion generators.

Datasheet

HC4 150kVA 400V 60Hz unverified

· diesel-driven alternator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Insulation class H provides high temperature tolerance and longer service life.
Four‑pole construction gives smoother output voltage and reduced vibration.
Compact, integrated design fits well in limited engine‑room spaces.
Stamford/Cummins brand reputation for reliability and worldwide support.

Weaknesses

IP23 enclosure offers only basic protection against dust and splashing; not suitable for harsh wet environments without additional shielding.
150 kVA may be insufficient for larger vessels with high hotel‑load demands.
Fixed 60 Hz output limits use on ships that operate on 50 Hz systems unless a frequency converter is added.

Typical Vessels: Offshore supply vesselPlatform support vesselSmall to medium container shipCruise ferryNaval auxiliary

Decision Guide: Choose if you need a proven, compact 150 kVA generator for vessels operating on 60 Hz with moderate environmental exposure and value high temperature capability. Avoid if the installation requires IP65‑rated protection, higher power output, or native 50 Hz operation.

Use Cases: Provides ship service power for hotel loads, emergency backup, start‑up of main propulsion engines, and auxiliary equipment on offshore support vessels where space is at a premium and reliable diesel generation is required.

Datasheet

HC4 150kVA 440V 50Hz unverified

· diesel generator set

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) allows operation in elevated ambient temperatures.
Compact IP23 enclosure saves space in engine rooms while providing splash protection.
Four‑pole design delivers stable voltage and frequency under varying loads.
Cummins/Stamford reputation for reliability and worldwide service support.
Integrated control panel compatible with common marine automation systems.

Weaknesses

IP23 rating is not fully weather‑proof; unsuitable for exposed deck installations.
150 kVA output may be undersized for larger vessels or high hotel‑load ships.
Single‑engine configuration provides no built‑in redundancy; a second set is required for critical missions.
Noise and vibration levels are typical of medium‑speed diesel units, requiring additional mitigation in noise‑sensitive areas.

Typical Vessels: Offshore supply vesselCoastal ferrySmall tankers (product carriers)Container feeder shipsCruise ship auxiliary power (hotel load) on smaller vessels

Decision Guide: Choose if you need a reliable mid‑size auxiliary generator with a compact footprint, have access to Cummins service support, and operate in environments where splash protection is sufficient. Avoid if the vessel requires higher weather protection (IP44+), redundancy without adding a second set, or power output exceeding 150 kVA.

Use Cases: The HC4 is typically installed as an auxiliary generator supplying hotel services, emergency power, and occasional propulsion support on medium‑size commercial vessels where space constraints and temperature resilience are key considerations.

Datasheet

HC4 150kVA 440V 60Hz unverified

· high-speed diesel generator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 150 kVA in a relatively small envelope, saving space on board.
Integrated electronic governor and remote monitoring simplify operation and maintenance.
Meets IMO Tier 2 emission standards, offering lower NOx and particulates than older units.
ABS type‑approved design provides recognized marine safety compliance.
Four‑pole construction gives smooth output with low harmonic distortion.

Weaknesses

IP23 enclosure limits protection against water spray; additional shielding required for harsh exposure.
Designed for 60 Hz only – not directly suitable for vessels operating on 50 Hz without a frequency converter.
Fuel consumption higher than low‑speed, larger‑capacity gensets when delivering the same power.
Noise level moderate; may need extra acoustic insulation in passenger‑focused vessels.
Maximum continuous rating of 150 kVA limits use on very large ships that require >200 kVA auxiliary power.

Typical Vessels: Offshore supply vesselFerryCruise ship (auxiliary)Container feederMedium‑size tanker

Certifications: ABS

Decision Guide: Choose if: you need a compact, high‑speed diesel generator for auxiliary power on medium‑sized vessels, require integrated monitoring and IMO Tier 2 emissions compliance, and operate in a 60 Hz region. Avoid if: the installation demands higher protection (IP66) against water ingress, you run on 50 Hz systems, or the vessel requires >150 kVA continuous auxiliary power.

Use Cases: Typically installed as an emergency/standby generator to supply hotel loads, navigation equipment, and cargo handling gear; also used for propulsion‑assist in hybrid diesel‑electric configurations on ferries and offshore vessels.

Datasheet

HC4 150kVA 690V 50Hz unverified

· Stamford HC4 marine alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) and H‑class insulation allow operation at elevated temperatures.
Robust IP23 enclosure suitable for typical engine‑room environments.
Proven reliability with long service intervals and extensive fleet experience.
Compact footprint for a 150 kVA unit, easing installation in confined spaces.
Broad compatibility with standard marine diesel prime movers.

Weaknesses

Relatively heavy compared with newer lightweight alternator designs.
Fixed 690 V/50 Hz output limits use on vessels requiring 60 Hz or different voltage levels.
IP23 rating offers limited protection against water ingress; not suitable for wet‑area mounting.
No integrated power‑factor correction, requiring external equipment for PF improvement.
Speed tied to engine RPM (typically 1500 rpm), reducing flexibility with variable‑speed drives.

Typical Vessels: ContainerBulk CarrierTankerRo‑RoCruise ShipOffshore Supply Vessel

Certifications: ABSDNV-GLLloyd's Register

Decision Guide: Choose if you need a proven, mid‑size (150 kVA) alternator with high temperature tolerance and standard 690 V/50 Hz output for auxiliary power on medium to large vessels. Avoid if the installation demands a lightweight unit, 60 Hz operation, or higher ingress protection than IP23.

Use Cases: Typically installed in the ship's auxiliary generator room, paired with a diesel engine to supply hotel loads, cargo‑handling equipment, and emergency power. Common on container ships, tankers, and cruise vessels where reliable, continuous electricity is required for navigation, lighting, HVAC, and safety systems.

Datasheet

HC4 150kVA 690V 60Hz unverified

· high-speed diesel generator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for vessels with limited engine‑room space
Insulation class H allows operation at higher ambient temperatures
IP23 enclosure provides protection against splashing water while remaining serviceable
Designed to meet modern emission standards (e.g., EPA Tier 2/IMO NOx Tier II)
Fast start‑up and high power density for rapid load response

Weaknesses

Higher fuel consumption at part‑load compared with medium‑speed alternatives
IP23 rating is not fully weather‑tight; additional shelter may be required in harsh environments
Limited to 60 Hz operation, unsuitable for vessels requiring 50 Hz power systems
High‑speed operation results in higher wear and more frequent maintenance intervals

Typical Vessels: Container feederProduct tankerBulk carrier (mid‑size)Offshore supply vesselFerry / passenger ship

Certifications: IMO Type Approval (D‑2)ABS classificationDNV GL approval

Decision Guide: Choose if you need a compact, high‑speed auxiliary generator delivering up to 150 kVA on a 60 Hz system and space is at a premium. Avoid if the vessel operates primarily on 50 Hz, seeks maximum fuel efficiency at low loads, or requires a fully weather‑proof enclosure.

Use Cases: Provides shipboard electricity for lighting, HVAC, cargo pump operation, navigation equipment, and can serve as an emergency standby generator on medium‑size commercial vessels where space constraints favor high‑speed units.

Datasheet

HC4 175kVA 400V 50Hz unverified

· high-speed diesel generator set

Power (kVA)

175

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 175 kVA in a relatively small footprint, ideal for vessels with limited engine‑room space.
Integrated Cummins control system provides automatic start/stop, load sharing and remote monitoring.
Meets IMO Tier III emissions (when equipped with the optional after‑treatment), allowing operation in Emission Control Areas.
Proven reliability of Cummins Stamford engines with extensive service network worldwide.
Optional sound‑proof enclosure reduces noise to acceptable levels for crew comfort.

Weaknesses

Higher fuel consumption per kW compared with medium‑speed or low‑speed generators of similar output.
Noise and vibration are greater than low‑speed alternatives, requiring additional mitigation measures.
Maximum continuous rating limited to 175 kVA – unsuitable for vessels needing larger auxiliary power.
Requires regular oil and coolant maintenance typical of high‑speed diesel engines.

Typical Vessels: Platform Supply Vessel (PSV)Offshore Support VesselCoastal FerryWorkboat / TugSmall Bulk Carrier

Certifications: IMO D-2 Type ApprovalABS ClassificationDNV GL ApprovalUSCG Type Approval

Decision Guide: Choose if you need a compact, high‑speed auxiliary generator up to 175 kVA with proven Cummins reliability and emissions compliance for vessels with limited engine‑room space. Avoid if the vessel requires higher continuous power, prioritises fuel efficiency over size, or operates in environments where low noise is critical without additional mitigation.

Use Cases: Typically installed as an auxiliary generator on offshore supply ships to provide hotel load, emergency power, and support for dynamic positioning systems. Also used on coastal ferries and workboats where space constraints demand a high‑speed set that can start quickly and meet strict emission standards.

Datasheet

HC4 175kVA 400V 60Hz unverified

· Stamford HC4 diesel generator set

Power (kVA)

175

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency and low specific fuel consumption typical of the HC4 series
Compact, IP23 enclosure suitable for confined engine‑room spaces
Robust H‑class insulation allowing reliable operation in harsh marine environments
Four‑pole design provides stable 60 Hz output with reduced vibration
Modular construction simplifies installation and routine maintenance

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for exposed outdoor mounting
Maximum continuous power of 175 kVA may be insufficient for larger vessels requiring higher auxiliary loads
Standard configuration does not include built‑in sound attenuation; additional silencing may be required
Requires diesel fuel handling infrastructure and regular oil changes

Typical Vessels: Offshore supply vesselFerrySmall to medium tankerContainer feederResearch or survey ship

Certifications: ABSDNV GL

Decision Guide: Choose if you need a proven, compact diesel generator in the 150‑200 kVA range for auxiliary power on medium‑size vessels and value ease of maintenance. Avoid if the installation demands higher ingress protection (IP44 or above), significantly larger power output, or integrated acoustic enclosures.

Use Cases: Typically installed as an auxiliary generator set in the engine room of offshore supply vessels, ferries, and small tankers to run hotel loads, navigation equipment, cargo pumps, and emergency systems. It is also used on research ships where space is at a premium but reliable power is essential.

Datasheet

HC4 175kVA 440V 50Hz unverified

· high-speed diesel generator

Power (kVA)

175

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and relatively low weight compared with low‑speed gensets of similar rating
Integrated Cummins control system provides automatic load sharing and remote monitoring
Fuel‑efficient operation meeting modern emission standards (EPA Tier II/III) for auxiliary power
Proven reliability on a wide range of commercial vessels; easy access for routine maintenance
Standard 440 V three‑phase output matches most shipboard distribution systems

Weaknesses

Higher operating speed leads to greater noise and vibration than low‑speed alternatives
Limited overload capability (typically 110% for short periods) compared with larger gensets
Requires high‑quality diesel fuel; sensitivity to contaminants can affect service intervals
May need additional acoustic insulation in passenger‑oriented vessels
Maximum continuous rating of 175 kVA may be insufficient for large hotel‑load ships

Typical Vessels: Offshore supply vesselFerrySmall to medium container shipCruise ship auxiliary plantFishing vessel / factory trawlerYacht or luxury liner

Certifications: ABSDNV‑GLLloyd's Register

Decision Guide: Choose if you need a compact, fuel‑efficient 175 kVA auxiliary generator with integrated control and proven marine certification, especially where space is at a premium. Avoid if the vessel requires higher power output, ultra‑low noise levels, or prefers low‑speed engines for extended service intervals.

Use Cases: Typically installed as an auxiliary or emergency power source to supply hotel loads, navigation equipment, and cargo handling systems on commercial vessels; also used in hybrid propulsion schemes where a modest diesel generator supplements battery banks.

Datasheet

HC4 175kVA 440V 60Hz unverified

· high‑speed diesel generator set

Power (kVA)

175

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 175 kVA in a compact footprint compared with low‑speed gensets.
Proven Cummins/Stamford reliability with extensive service network worldwide.
Fast start‑up (under 10 seconds to rated load) suitable for emergency and hotel loads.
Class H insulation allows operation in high ambient temperature environments.

Weaknesses

Higher acoustic noise level than low‑speed, larger‑displacement generators; may require additional sound attenuation on passenger vessels.
Diesel fuel consumption rises sharply at full load; less efficient for continuous 100 % operation.
Single‑engine design provides limited redundancy – a second unit is needed for critical redundancy.
IP23 enclosure offers only protection against solid objects >12.5 mm; not suitable for harsh wash‑down or splash zones.

Typical Vessels: Offshore supply vesselFerry / Ro‑RoMedium‑size container feederSmall tankers and product carriersCruise ship auxiliary plant

Decision Guide: Choose if you need a compact, high‑speed generator with quick start for auxiliary or emergency power on medium‑sized vessels where space is at a premium. Avoid if the vessel requires ultra‑low noise operation, continuous full‑load duty, or exposure to harsh marine wash‑down conditions that demand higher enclosure ratings.

Use Cases: Typically installed as part of an auxiliary power plant to supply hotel services, cargo handling equipment, navigation systems, and emergency lighting. Frequently paired with other gensets in a multi‑generator configuration for redundancy on offshore support vessels and ferries.

Datasheet

HC4 175kVA 690V 50Hz unverified

· high-efficiency marine alternator

Power (kVA)

175

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability on a wide range of commercial vessels
High overload capability (up to 150% for short periods)
Class H insulation allows operation in hot engine rooms
Compact modular construction simplifies installation and maintenance
Integrated Cummins control system offers basic monitoring and protection

Weaknesses

IP23 enclosure requires adequate ventilation; not suited for extremely corrosive environments without extra protection
Control electronics are less advanced than newer digital generators (limited remote diagnostics)
Physical size and weight larger than some modern compact alternatives
Fixed 690 V output may require additional transformers for vessels standardising on other voltages

Typical Vessels: TankersBulk carriersContainer shipsCruise linersOffshore supply vessels

Certifications: ABSDNV GLLloyd's Register

Decision Guide: Choose if you need a dependable 175 kVA auxiliary generator with high overload capability and proven service history on commercial ships, especially when paired with Cummins engines. Avoid if space is at a premium, you require the latest digital monitoring features, or the installation environment is highly corrosive without additional protection.

Use Cases: Typically installed as the main shipboard auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power; also used for shore‑power conversion units on tankers and bulk carriers.

Datasheet

HC4 175kVA 690V 60Hz unverified

· high-speed marine alternator

Power (kVA)

175

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 175 kVA in a relatively small footprint
Robust, proven Cummins/Stamford construction with low maintenance intervals
Direct‑coupled to diesel engines; no gearbox required
Standard 690 V/60 Hz output matches most US‑flagged vessel electrical systems

Weaknesses

Open IP23 enclosure – not suitable for harsh, wet deck installations without additional protection
Designed for 60 Hz only; unsuitable where 50 Hz is required
Higher acoustic noise compared with fully enclosed models
Cooling performance can be limited in very hot climates and may need supplemental ventilation

Typical Vessels: Offshore Supply VesselFerryContainer Ship (auxiliary power)Cruise ShipTanker (hotel load)

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for a 690 V 60 Hz system and have space constraints or prefer the Cummins brand reliability. Avoid if the installation environment requires higher ingress protection (e.g., IP55) or if the vessel operates on a 50 Hz electrical grid.

Use Cases: Commonly installed as an auxiliary generator to supply hotel loads, emergency power, and start‑up power for main propulsion engines on medium‑size commercial vessels where space is at a premium.

Datasheet

HC4 200kVA 400V 50Hz unverified

· high‑capacity marine alternator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and robust 4‑pole design for stable output at 50 Hz
Proven reliability with extensive service history in commercial fleets
Modular construction simplifies installation and routine maintenance
Direct compatibility with Cummins diesel engines commonly used on vessels
IP23 enclosure provides basic protection while allowing easy access for servicing

Weaknesses

IP23 rating limits use in harsh, wet or corrosive environments without additional shielding
Requires a dedicated cooling‑water system; not fully self‑contained
Single frequency (50 Hz) may be unsuitable for vessels that need dual‑frequency capability
Physical size and weight are significant, impacting engine‑room layout planning
Control and protection electronics often supplied as separate packages, adding integration effort

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven 200 kVA auxiliary generator that integrates smoothly with Cummins diesel engines and the installation environment can accommodate an IP23 enclosure. Avoid if the vessel operates in highly corrosive or wet conditions requiring higher ingress protection, or if dual‑frequency (50/60 Hz) capability is mandatory.

Use Cases: Commonly installed as the main auxiliary generator set in a ship's engine room to supply hotel loads, cargo handling equipment, and emergency power. Frequently paired with Cummins QSK series engines on commercial vessels for continuous operation during voyages and port stays.

Datasheet

HC4 200kVA 400V 60Hz unverified

· Stamford marine alternator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Cummins/Stamford reliability with decades of service in the maritime sector
Compact footprint and integrated mounting options for limited engine room spaces
High overload capability (typically 110 % for 30 min) suitable for peak hotel loads
Class H insulation allows operation in high‑temperature machinery spaces
Standardized electrical interface simplifies integration with common marine diesel engines

Weaknesses

IP23 enclosure limits use to protected, dry locations; not suitable for exposed outdoor installations
Maximum output of 200 kVA may be insufficient for larger vessels or high‑power hotel loads
Requires external cooling air flow management; improper ventilation can reduce lifespan
Weight and size are still significant compared with newer lightweight permanent‑magnet generators

Typical Vessels: Coastal cargo shipsOffshore supply vessels (OSV)FerriesPatrol boatsMedium‑size tankersYachts and luxury vessels

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if: you need a reliable, proven 200 kVA generator for a protected engine‑room environment on medium‑size vessels; space is limited and you prefer a widely supported Cummins service network. Avoid if: the vessel requires higher power output, an outdoor or high‑exposure installation (IP rating too low), or you are targeting ultra‑lightweight generator technology.

Use Cases: Typically installed as the main auxiliary generator supplying hotel services, navigation equipment and cargo handling gear on medium‑sized commercial ships; also used as a standby/emergency generator where rapid start‑up and proven reliability are critical.

Datasheet

HC4 200kVA 440V 50Hz unverified

· water‑cooled alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability with decades of service in commercial fleets
High overload capability (up to 110 % for short periods)
Compact footprint relative to power output, easing installation in tight engine rooms
Standard ABS/DNV/LR approvals simplify class approval processes
Direct‑drive design reduces mechanical losses and maintenance on the drive train

Weaknesses

Relatively heavy (≈ 7–8 t) compared with newer inverter‑driven gensets of similar rating
Fixed‑speed operation limits fuel‑efficiency optimisation at part load
Noise level higher than modern low‑speed, variable‑speed generators
No built‑in emissions control; additional after‑treatment required for Tier III compliance
Requires an external cooling water pump and dedicated ventilation

Typical Vessels: Cruise shipFerryOffshore supply vesselContainer shipTankerNaval auxiliary

Certifications: ABSDNV GLLloyd's Register

Decision Guide: Choose if you need a rugged, class‑approved 200 kVA generator with proven service history and can accommodate fixed‑speed operation. Avoid if low emissions (Tier III), fuel‑saving variable‑speed operation, or weight constraints are primary concerns.

Use Cases: Typically installed as main auxiliary power for hotel loads, cargo handling equipment, and emergency generators on medium‑size commercial vessels; also used in offshore platforms where a dependable, high‑overload generator is required.

Datasheet

HC4 200kVA 440V 60Hz unverified

· diesel generator set

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Cummins service network and parts availability worldwide
High insulation class H allows operation in elevated temperature environments
Compact, marine‑grade design with IP23 protection suitable for typical engine rooms
Four‑pole construction provides stable 60 Hz output with low ripple
Integrated control panel simplifies monitoring and maintenance

Weaknesses

IP23 rating does not protect against heavy spray or dust; unsuitable for exposed deck locations
200 kVA may be insufficient for larger vessels requiring higher auxiliary power
External cooling water system required, adding installation complexity
Noise level moderate; additional silencing may be needed for passenger‑area installations

Typical Vessels: Offshore supply vesselFerryPatrol boatSmall cruise shipContainer feederTugboat

Decision Guide: Choose if: you need a reliable 200 kVA auxiliary power source for a 60 Hz marine electrical system, have limited engine‑room space, and value Cummins global support. Avoid if: the installation requires higher ingress protection (IP55+), you need more than 200 kVA, or the vessel operates on a 50 Hz grid without frequency conversion.

Use Cases: Typically installed as the main auxiliary generator on medium‑size commercial vessels, providing power for hotel loads, cargo handling equipment, and emergency services. Also used as a standby unit in dual‑generator configurations to ensure redundancy.

Datasheet

HC4 200kVA 690V 50Hz unverified

· high-speed marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint thanks to high‑speed design, saving valuable engine‑room space
Insulation class H provides tolerance to higher operating temperatures and improves reliability
Four‑pole construction delivers stable frequency output at 50 Hz
IP23 enclosure offers splash protection suitable for typical marine engine‑room environments
Cummins/Stamford brand reputation for durability and extensive service network

Weaknesses

Limited to 200 kVA – may be undersized for larger vessels or high‑power demand scenarios
IP23 rating does not protect against dust ingress; harsher environments may require IP65 or higher
High‑speed operation can lead to increased bearing wear compared with low‑speed alternators
Requires a 690 V bus system; ships using 440 V or 11 kV distribution will need additional conversion equipment
Maintenance intervals are shorter than for slower, larger‑diameter generators

Typical Vessels: Offshore supply vesselFerrySmall to medium tankerContainer feederCruise ship auxiliary power unit

Decision Guide: Choose if: you need a compact, high‑temperature tolerant generator around 200 kVA for vessels with limited engine‑room space and a 690 V bus. Avoid if: the vessel requires higher power output, stricter environmental protection (IP65+), or prefers low‑speed alternators for longer service intervals.

Use Cases: Commonly installed as a main generator on offshore supply ships, as an auxiliary generator on ferries and cruise vessels, or as an emergency power source on container feeders where space is at a premium and reliable 50 Hz output is required.

Datasheet

HC4 200kVA 690V 60Hz unverified

· high-speed marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size suitable for vessels with limited engine‑room space
Proven Cummins/Stamford reliability with a long service history in marine fleets
Integrated Power Management System simplifies monitoring and load sharing
High overload capability (up to 125 % for short periods) for peak demand events
Meets IMO D‑2 and USCG type‑approval standards, facilitating class approval

Weaknesses

Higher operating speed generates more noise and vibration than low‑speed generators
Requires high‑quality fuel; sensitivity to contaminated diesel can increase maintenance
Fixed 690 V output limits flexibility for vessels that use alternative voltage systems
Cooling system must be properly sized; inadequate cooling can reduce lifespan

Typical Vessels: Container shipTankerBulk carrierCruise ferryOffshore supply vessel

Certifications: IMO D-2USCG Type Approval

Decision Guide: Choose if you need a compact, 200 kVA auxiliary generator with proven Cummins reliability and integrated control on medium‑size vessels. Avoid if low noise, ultra‑low fuel consumption, or flexible voltage options are higher priorities than footprint.

Use Cases: Commonly installed as the primary auxiliary generator on mid‑size merchant ships, providing power for hotel loads, cargo handling equipment, and emergency systems; also used as a standby unit on larger vessels where redundancy is required.

Datasheet

HC5 200kVA 400V 50Hz unverified

· brushless synchronous alternator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven track record on a wide range of commercial vessels – extensive field experience and spare‑parts support.
High overload capability (up to 125 % for short periods) useful during peak load transients.
Robust cast‑iron construction gives long service life and excellent vibration damping.
Standard 400 V output matches most marine distribution systems, simplifying integration.
H‑class insulation provides good thermal margin and resistance to hot‑spot ageing.

Weaknesses

IP23 enclosure offers limited protection against dust and water ingress; not suitable for harsh offshore exposure without additional shielding.
Cast‑iron frame makes the unit heavier than comparable aluminium‑cased generators, affecting installation space and weight budgeting.
Fixed 400 V rating limits flexibility if a vessel requires higher voltage busbars (e.g., 660 V).
Four‑pole design runs at 1500 rpm; not optimal for high‑speed engine applications where compactness is critical.

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (auxiliary power)Offshore supply vessel

Certifications: ABSDNV GL

Decision Guide: Choose if: you need a rugged, low‑maintenance 200 kVA generator with proven service support and can accommodate its weight and IP23 rating. Avoid if: the installation requires higher voltage output, ultra‑lightweight equipment, or operation in highly corrosive environments without additional protection.

Use Cases: Typically installed as an auxiliary generator on medium‑size commercial ships to supply hotel loads, navigation systems, cargo handling equipment, and emergency power; often paired with a Cummins diesel engine in a genset set.

Datasheet

HC5 200kVA 400V 60Hz unverified

· high‑speed diesel generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 200 kVA in a relatively small footprint.
Integrated Cummins control system with remote monitoring capability.
Proven reliability of the Stamford engine family, widely used in marine service.
Meets current MARPOL Annex VI emission limits for low‑speed diesel generators.

Weaknesses

Higher fuel consumption per kW compared with medium‑speed engines of similar rating.
Noise and vibration levels are greater than slower‑running alternatives.
IP23 enclosure provides only splash protection; not suitable for harsh dusty or corrosive environments without additional shielding.
Maximum output limited to 200 kVA – unsuitable for larger vessels requiring higher generation capacity.

Typical Vessels: Offshore supply vesselFerryCoastal container ship (up to ~5,000 gt)Research / survey vessel

Certifications: ABSDNV GL

Decision Guide: Choose if: you need a compact, reliable 200 kVA generator for a medium‑size vessel with limited engine room space and can accommodate the higher fuel use and noise. Avoid if: the installation requires dust‑tight or explosion‑proof enclosures, or the vessel demands power output well above 200 kVA.

Use Cases: Typically installed as the main auxiliary generator on offshore supply vessels, ferries, and small to medium cargo ships where space is at a premium and a proven, low‑maintenance diesel set is preferred for continuous operation during port stays and underway periods.

Datasheet

HC5 200kVA 440V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Robust Cummins engineering with proven field reliability
High efficiency (≈38% at rated load) reducing fuel consumption
Integrated control panel and diagnostics simplify operation and maintenance
Modular construction allows quick on‑site replacement of major components
H‑class insulation provides good thermal tolerance for continuous operation

Weaknesses

IP23 enclosure limits protection against heavy spray or saltwater immersion; requires sheltered installation
Fixed 440 V/50 Hz output – not suitable for vessels that need dual‑frequency or higher voltage options
Physical footprint and weight are relatively large for a 200 kVA unit, impacting tight engine‑room layouts
May require an external cooling water system in hot climates

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselRo‑Ro ferry

Decision Guide: Choose if: you need a dependable 200 kVA auxiliary source on a 50 Hz, 440 V system and have space for an IP23‑rated unit; you value Cummins service network and integrated control. Avoid if: the vessel requires dual‑frequency capability, higher voltage output, or an enclosure rated for direct exposure to sea spray.

Use Cases: Commonly installed as a main auxiliary generator supplying hotel loads, navigation equipment, and emergency power on medium‑size commercial ships; also used in offshore platforms where continuous, low‑maintenance power is critical.

Datasheet

HC5 200kVA 440V 60Hz unverified

· brushless high-speed alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power‑to‑size ratio – compact footprint compared with low‑speed generators of similar rating.
Brushless construction reduces routine maintenance and improves reliability.
Integrated forced‑air cooling provides consistent temperature control under overload conditions.
Robust insulation class H allows operation in high ambient temperature environments.
Standard 4‑pole design matches common 60 Hz shipboard distribution systems.

Weaknesses

IP23 enclosure offers limited protection against water ingress; additional weatherproofing may be required for exposed installations.
High rotational speed can increase bearing wear and demands precise alignment with the prime mover.
Designed for 60 Hz only – not suitable for vessels requiring 50 Hz power without a frequency converter.
Limited overload duration compared with low‑speed, heavy‑frame alternators.

Typical Vessels: Offshore supply vesselFerryCruise ship (auxiliary/standby)Container ship (emergency generator)Yacht

Certifications: ABSDNV‑GL

Decision Guide: Choose if: you need a compact, high‑power auxiliary or emergency generator for a US‑flagged or other 60 Hz vessel and space/weight are at a premium. Avoid if: the installation is exposed to severe weather requiring higher ingress protection, or the ship operates on a 50 Hz system.

Use Cases: Commonly installed as an auxiliary power source on merchant vessels, providing electricity for hotel loads, cargo handling equipment, and emergency lighting; also used on offshore platforms where space‑constrained gensets are required.

Datasheet

HC5 200kVA 690V 50Hz unverified

· high‑speed diesel generator set

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 200 kVA in a relatively small footprint
Cummins reputation for reliability and worldwide service support
Insulation class H allows operation at elevated ambient temperatures
Four‑pole design gives stable voltage and frequency at 50 Hz
Standard 690 V output matches most marine distribution systems

Weaknesses

IP23 enclosure provides only splash protection; not suitable for harsh wet environments without additional shielding
High‑speed engine typically consumes more fuel than low‑speed alternatives for the same power rating
Higher acoustic noise level compared with slower‑running generators
Maintenance intervals are shorter than those of permanent‑magnet or low‑speed gensets
Limited to 690 V; vessels requiring higher voltage (e.g., 11 kV) need step‑up transformers

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselFerryCruise ship (mid‑size)

Decision Guide: Choose if you need a compact, proven 200 kVA auxiliary power source with worldwide Cummins support and can accommodate an IP23 enclosure. Avoid if the installation demands full dust/water protection, ultra‑low fuel consumption, or very low acoustic signature.

Use Cases: Commonly installed as main auxiliary generators on medium‑size cargo vessels, offshore supply ships, and ferries where space is at a premium and reliable 690 V power is required for hotel loads, deck machinery, and emergency systems.

Datasheet

HC5 200kVA 690V 60Hz unverified

· high-speed marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint for 200 kVA output – useful where space is limited
Proven Cummins/Stamford reliability with worldwide service network
Integrated control panel and automatic voltage regulator simplifies installation
Class‑H insulation tolerates high temperature operation
Standard 690 V, 60 Hz output matches most modern ship electrical systems

Weaknesses

High‑speed design results in higher fuel consumption compared with medium/low‑speed alternatives
IP23 enclosure provides only limited protection against water ingress; additional shielding may be required for harsh environments
Fixed 690 V, 60 Hz output – not suitable for vessels that operate on 50 Hz or lower voltage systems
Overload capability is limited to short periods; continuous overload may reduce engine life

Typical Vessels: Container shipsCruise linersFerriesOffshore supply vesselsSmall tankersGeneral cargo vessels

Certifications: ABSDNV

Decision Guide: Choose if you need a compact, proven 200 kVA generator for a 690 V/60 Hz ship service bus and value Cummins global support. Avoid if the vessel requires low‑speed high‑efficiency generators, operates on 50 Hz, or will be exposed to severe weather without additional enclosure protection.

Use Cases: Typically installed as the main auxiliary generator supplying hotel loads, navigation equipment, and cargo handling systems on medium‑size commercial vessels; also used as a standby unit in dual‑generator arrangements.

Datasheet

HC5 250kVA 400V 50Hz unverified

· brushless alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (Class H insulation) allowing longer run times without overheating
Robust IP23 enclosure protects against splashing water and dust typical on deck installations
Integrated control panel with built-in protection functions (over‑/under‑voltage, over‑frequency, oil pressure)
Proven Cummins/Stamford reliability with a long service history in commercial fleets
Standard 400 V three‑phase output matches most shipboard distribution systems

Weaknesses

Relatively heavy and bulky compared with newer compact inverter‑driven generators
Fixed 400 V/50 Hz rating limits flexibility for vessels that operate on 60 Hz or higher voltage systems
Requires regular oil change and periodic brush inspection despite being brushless (exciter brushes)
IP23 rating does not protect against full immersion; additional shielding needed in very wet locations

Typical Vessels: General cargo shipsOffshore supply vesselsFerriesMedium‑size container vesselsCruise ships (auxiliary power)

Certifications: ABSDNV GL

Decision Guide: Choose if you need a proven, high‑output generator for 400 V/50 Hz systems on medium‑size commercial vessels and value long‑term reliability over compact size. Avoid if the vessel requires 60 Hz operation, higher voltage output, or a lightweight inverter‑type solution.

Use Cases: The HC5 is typically installed as the main auxiliary generator on ships that require continuous power for hotel loads, cargo handling equipment, and emergency systems. It also serves as a standby unit on offshore platforms where redundancy and ruggedness are critical.

Datasheet

HC5 250kVA 400V 60Hz unverified

· high-speed diesel generator set

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and high power density for limited engine room space
Integrated Cummins PowerCommand control system with remote monitoring
Fast start‑up time (typically under 10 seconds) for emergency power
Global Cummins service network and proven reliability in marine service
Optional Tier III emissions package available for low‑NOx operation

Weaknesses

Higher specific fuel consumption compared with medium‑speed gensets of similar rating
Increased noise and vibration levels typical of high‑speed engines
Shorter maintenance intervals than low‑speed units, requiring more frequent servicing
Limited to 60 Hz output; not directly suitable for vessels that require 50 Hz without conversion

Typical Vessels: Offshore supply vesselTugboatFerryCruise ship auxiliary plantSmall container or bulk carrier

Decision Guide: Choose if you need a compact, quick‑starting generator with strong Cummins support and optional low‑NOx compliance. Avoid if fuel efficiency over long continuous runs or 50 Hz power is a primary requirement.

Use Cases: Provides main auxiliary power for hotel loads, serves as emergency standby generation, powers dynamic positioning thrusters, and can be used for shore‑power conversion on offshore support vessels.

Datasheet

HC5 250kVA 440V 50Hz unverified

· high-speed marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 250 kVA in a relatively small footprint.
Integrated control and protection system simplifies commissioning and monitoring.
Meets IMO Tier II (MARPOL Annex VI) emissions, suitable for regulated waters.
Proven reliability with Cummins’ global service network.

Weaknesses

High‑speed operation results in higher acoustic noise compared with low‑speed generators.
IP23 enclosure provides limited protection; additional shielding needed in harsh environments.
Maintenance intervals (bearings, brushes) are shorter than for low‑speed units.
Fixed 440 V/50 Hz output limits flexibility for vessels requiring other voltage/frequency configurations.

Typical Vessels: Offshore supply vesselFerryCoastal tankerContainer feederResearch / survey vessel

Certifications: ABS Type ApprovalDNV ClassificationIMO Tier II (MARPOL Annex VI) compliance

Decision Guide: Choose the HC5 250 kVA when you need a compact, high‑output generator for vessels operating in regulated emission zones and have space constraints. Avoid it on ships that demand low noise levels, harsh weather exposure without additional enclosures, or require multiple voltage/frequency options.

Use Cases: Commonly installed as the main auxiliary power source on offshore supply ships, ferries, and coastal tankers to run propulsion auxiliaries, cargo handling gear, and hotel loads while meeting emission standards. Also used in research vessels where space is at a premium and reliable, quick‑start power is essential.

Datasheet

HC5 250kVA 440V 60Hz unverified

· air-cooled high‑speed marine alternator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 250 kVA in a relatively compact footprint
Proven Cummins/Stamford reliability with extensive service network
Class H insulation allows operation up to 180 °C, enhancing durability
Integrated control panel and diagnostics simplify installation and monitoring
Standard 4‑pole design provides stable voltage and frequency output

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh wet environments without additional shielding
Noise level higher than low‑speed, water‑cooled generators, may require extra acoustic treatment
Single‑unit configuration limits redundancy for critical emergency power applications
Only 60 Hz rating – unsuitable for vessels requiring 50 Hz systems

Typical Vessels: Container shipsBulk carriersTankersCruise linersOffshore supply vesselsFerries

Decision Guide: Choose if: you need a compact, high‑output auxiliary generator for a 60 Hz vessel and value Cummins service support. Avoid if: the installation area is exposed to heavy spray or water jets (IP23 may be insufficient), you require built‑in redundancy, or the ship operates on a 50 Hz power system.

Use Cases: The HC5 250 kVA unit is typically installed as an auxiliary generator supplying hotel loads, cargo refrigeration, and emergency power on large commercial ships. It is also used in retrofit projects where space constraints demand a high‑power, compact solution.

Datasheet

HC5 250kVA 690V 50Hz unverified

· medium-speed diesel-driven alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 250 kVA in a compact footprint suitable for medium‑size vessels
Class H insulation provides excellent thermal endurance for continuous operation
Four‑pole design gives stable frequency and low harmonic distortion
IP23 enclosure balances protection against splashing water with easy access for maintenance
Widely supported by Cummins service network, simplifying spare parts logistics

Weaknesses

Enclosure is only IP23; not suitable for locations requiring full dust‑tight or explosion‑proof ratings
Fixed 690 V output limits flexibility where lower voltage distribution is preferred
No built‑in emission control package – engine emissions must be addressed separately
Requires a dedicated cooling system; integration can add to installation complexity

Typical Vessels: Container shipBulk carrierTankerCruise ferryOffshore supply vessel

Certifications: IMO D‑2ABS Marine CertificationDNV GL Approval

Decision Guide: Choose if you need a reliable, medium‑speed generator with high thermal rating for vessels that operate continuously and have space constraints. Avoid if the installation demands higher ingress protection (IP65+), lower voltage distribution, or integrated emission controls.

Use Cases: The HC5 is commonly installed as the main auxiliary power source on mid‑size cargo ships and passenger ferries, supplying shipboard services such as lighting, HVAC, cargo handling equipment, and emergency power. It is also used in offshore support vessels where robust, continuous power is critical.

Datasheet

HC5 250kVA 690V 60Hz unverified

· high-speed marine alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 250 kVA in a relatively small footprint
Proven reliability of the Cummins Stamford HC series with extensive service network
Integrated control and monitoring system simplifies installation and operation
Four‑pole design provides good voltage regulation under varying loads
Standard 690 V/60 Hz output matches most marine auxiliary power systems

Weaknesses

IP23 enclosure offers limited protection against water spray; not suitable for harsh weather exposure without additional shielding
Designed for 60 Hz only – unsuitable for vessels requiring 50 Hz or dual‑frequency capability
Brush wear requires periodic inspection and replacement, adding maintenance tasks
Noise level is moderate; may need acoustic insulation in passenger‑focused areas
Cooling capacity can be a constraint in very hot climates without supplemental ventilation

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise ship (hotel load)Fishing vessel (larger trawlers)

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if: you need up to 250 kVA auxiliary power, have limited engine‑room space, and operate on a 60 Hz system with standard marine voltage. Avoid if: the vessel requires 50 Hz operation, an explosion‑proof or fully weather‑tight enclosure, or ultra‑low emissions beyond the baseline Cummins engine rating.

Use Cases: The HC5 is typically installed as part of the ship’s auxiliary power plant to supply hotel services, cargo handling equipment, and emergency loads on tankers, container vessels, and offshore support ships. It is also used on cruise ships for domestic electricity generation when shore power is unavailable.

Datasheet

HC5 315kVA 400V 50Hz unverified

· high‑speed diesel generator set

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 315 kVA in a compact footprint suitable for space‑constrained engine rooms.
Standard 400 V/50 Hz output matches most marine distribution systems, simplifying integration.
Proven Cummins/Stamford reliability with a long service history on commercial vessels.
IP23 enclosure provides basic protection while allowing easy access for routine maintenance.

Weaknesses

Higher fuel consumption and noise level compared with medium‑speed generators of similar rating.
Shorter overhaul intervals (typically every 2 000–3 000 h) increase lifecycle maintenance costs.
Limited to open‑type IP23 enclosure – not suitable for harsh, wet environments without additional shielding.
May require emission after‑treatment kits to meet strict EU Stage V or US EPA Tier 4 standards.

Typical Vessels: FerriesOffshore supply vesselsCruise ships (mid‑size)Container feedersSmall tankers

Certifications: ABSDNV GLLloyd's Register

Decision Guide: Choose if you need a compact, high‑speed generator that fits into limited engine‑room space and can supply standard 400 V/50 Hz shipboard loads with proven Cummins reliability. Avoid if the vessel operates continuously at high load for long periods, requires ultra‑low emissions without retrofit, or must be installed in a wet, corrosive environment where a higher IP rating is mandatory.

Use Cases: The HC5 315 kVA set is typically installed as an auxiliary power source on medium‑size commercial vessels to run hotel loads, cargo handling equipment, and emergency systems. It is common on ferries and offshore supply ships where space savings are critical and the generator runs intermittently rather than continuously.

Datasheet

HC5 315kVA 400V 60Hz unverified

· high‑speed diesel‑driven alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 315 kVA in a compact footprint suitable for space‑constrained vessels
Robust IP23 enclosure provides protection against splash and dust in marine environments
Insulation class H allows operation at elevated temperatures typical on ships
Four‑pole design gives good voltage regulation and low harmonic distortion
Widely supported by Cummins service network, simplifying spares and maintenance

Weaknesses

High‑speed operation can lead to higher noise levels compared with medium‑speed gensets
Designed for 60 Hz only – not directly compatible with vessels requiring 50 Hz power systems
IP23 rating does not protect against full water ingress; additional sealing may be needed in harsh wet areas
Maintenance intervals are shorter than low‑speed generators due to higher RPM
Limited voltage flexibility (400 V nominal) may require step‑up/down transformers for some applications

Typical Vessels: Platform Supply Vessel (PSV)Offshore Support VesselTugboatFerrySmall cruise shipCoastal cargo vessel

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a compact, high‑output generator for a 60 Hz US‑spec vessel with good service support and can accommodate the higher noise level. Avoid if your ship operates on a 50 Hz system, requires a fully watertight enclosure, or prioritises ultra‑low maintenance intervals.

Use Cases: The HC5 315 kVA set is commonly installed as the main auxiliary power source on offshore supply and support vessels where space is at a premium but reliable high‑capacity electricity is required for cargo handling gear, navigation equipment, and hotel loads. It also serves as a standby generator on ferries and tugs that need rapid start‑up capability.

Datasheet

HC5 315kVA 440V 50Hz unverified

· high‑speed diesel generator set

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 315 kVA in a relatively small footprint (IP23 enclosure).
Fast start‑up and load acceptance, suitable for emergency and peak‑load applications.
Standard insulation class H provides good thermal endurance for marine environments.
Four‑pole design yields stable 50 Hz output with low harmonic distortion.

Weaknesses

Higher operating RPM compared with low‑speed generators leads to increased noise and vibration.
Maintenance intervals are shorter than those of low‑speed, heavy‑fuel engines.
Limited to 440 V/50 Hz; not directly compatible with vessels requiring 60 Hz or higher voltage systems without transformer.
Emission compliance may require additional after‑treatment (e.g., SCR) for IMO Tier II/III.

Typical Vessels: FerryOffshore Supply Vessel (OSV)Small Container ShipCruise ship tenderCoastal cargo vessel

Certifications: DNV

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for vessels with limited engine‑room space and require rapid start‑up. Avoid if you prefer low‑speed, heavy‑fuel engines for very large ships or if the vessel operates on a 60 Hz power system.

Use Cases: Commonly installed as an auxiliary power source to supply shipboard hotel loads, emergency generators, and peak‑shaving on medium‑size commercial vessels where space and weight are at a premium.

Datasheet

HC5 315kVA 440V 60Hz unverified

· Four‑pole high‑speed marine alternator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 315 kVA in a relatively compact footprint.
Robust H‑class insulation allows operation at elevated temperatures.
Standard 440 V/60 Hz output matches most US‑registered vessel electrical systems.
Proven Cummins integration – compatible with a wide range of Cummins prime movers.

Weaknesses

IP23 enclosure provides limited water ingress protection; not suitable for harsh wet‑deck environments.
Designed for 60 Hz only, limiting use on vessels requiring 50 Hz systems.
Four‑pole high‑speed design may have higher fuel consumption than low‑speed alternatives of similar rating.
Physical size and mounting requirements can be restrictive on very space‑constrained installations.

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise ship (auxiliary power)

Decision Guide: Choose if you need a reliable 315 kVA auxiliary generator that matches US‑style 440 V/60 Hz electrical systems, have adequate space for an IP23 enclosure, and plan to pair it with a Cummins engine. Avoid if the vessel operates on 50 Hz, requires higher ingress protection (e.g., IP55), or prioritises ultra‑low fuel consumption offered by low‑speed gensets.

Use Cases: Typically installed as part of the ship’s auxiliary power plant to supply hotel loads, cargo handling equipment, and emergency power. Frequently used on vessels that already employ Cummins prime movers for seamless integration and common spare‑parts logistics.

Datasheet

HC5 315kVA 690V 50Hz unverified

· brushless air-cooled alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for large auxiliary power plants
Brushless design reduces maintenance and improves reliability
Class‑H insulation permits operation at elevated temperatures
Standard 690 V, 50 Hz output matches most marine electrical systems
Compact footprint compared with older low‑speed alternators

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh wet locations without additional shielding
Single‑frequency (50 Hz) design limits use on vessels requiring dual‑frequency capability
Requires adequate forced‑air cooling; performance degrades in poorly ventilated spaces
Coupling must be matched to a Cummins/Stamford engine or compatible drive, limiting flexibility

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 315 kVA, 690 V auxiliary generator for large merchant vessels and can provide the required ventilation and IP23‑compatible installation. Avoid if you require higher ingress protection (IP55+), dual‑frequency output, or a more compact unit for small craft.

Use Cases: Commonly installed as the main auxiliary generator on large cargo ships, providing continuous power for hotel services and emergency loads; also used in standby/emergency generator sets where high reliability is critical.

Datasheet

HC5 315kVA 690V 60Hz unverified

· brushless AC alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density for its class – 315 kVA in a compact footprint
Robust IP23 enclosure and Class‑H insulation suitable for harsh marine environments
Proven reliability with Cummins global service network and spare parts availability
Integrated cooling system (air‑forced) reduces auxiliary pump requirements

Weaknesses

Relatively heavy compared with newer high‑speed generator sets of similar output
Fixed speed (1500 rpm at 60 Hz) limits flexibility for variable‑speed propulsion schemes
Requires periodic brush inspection/maintenance if not fully brushless, adding service intervals

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: DNVABS

Decision Guide: Choose if you need a proven, medium‑size generator with strong after‑sales support for main or auxiliary power on large commercial vessels. Avoid if weight and space are at a premium, or if the vessel uses variable‑speed diesel‑electric propulsion that benefits from higher‑speed generators.

Use Cases: Commonly installed as a primary auxiliary generator on tankers, container ships and cruise vessels to supply shipboard electricity, hotel loads, and emergency power. Also used in offshore platforms where robust, low‑maintenance generation is required.

Datasheet

HC5 350kVA 400V 50Hz unverified

· high‑speed diesel genset

Power (kVA)

350

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and high power density compared with low‑speed generators of similar rating
Fast start‑up (under 10 seconds) for emergency power or load changes
Integrated Cummins PowerCommand control system provides automated monitoring, protection and remote diagnostics
Broad service network worldwide thanks to Cummins/Stamford dealer support
Meets IMO Tier II emission limits in most operating profiles

Weaknesses

Higher specific fuel consumption than low‑speed gensets of equivalent output
Noise and vibration levels are greater, requiring additional acoustic insulation on board
IP23 enclosure is not fully weather‑proof; extra shielding needed for exposure to sea spray or harsh environments
Limited voltage flexibility – 400 V/50 Hz only, so a transformer is required for vessels using other standards
Single‑engine design provides less redundancy than twin‑engine auxiliary power arrangements

Typical Vessels: Container shipsBulk carriersTankersCruise linersOffshore supply vesselsFerries

Decision Guide: Choose the HC5 350 kVA when you need a compact, fast‑starting auxiliary generator with integrated control and worldwide support, especially on vessels where space is at a premium. Avoid it if fuel efficiency, low noise/vibration, or higher IP protection are primary concerns, or when multiple redundant generators are required for critical loads.

Use Cases: The HC5 350 kVA is typically installed as the main auxiliary generator supplying hotel load, emergency power, and support for thrusters or dynamic positioning systems on medium‑size merchant ships. It can also serve as a standby unit in dual‑generator configurations to meet SOLAS emergency power requirements.

Datasheet

HC5 350kVA 400V 60Hz unverified

· high‑speed diesel generator set

Power (kVA)

350

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – compact footprint for a 350 kVA output
Integrated electronic control system with automatic voltage regulation and quick start (<10 s)
Proven Cummins engine reliability with easy access for routine maintenance
Meets IMO Tier II emission limits when equipped with appropriate after‑treatment
Fast response suitable for auxiliary or emergency power applications

Weaknesses

IP23 enclosure offers limited protection; additional shielding needed in harsh marine environments
Higher acoustic noise compared with low‑speed generators, may require extra insulation
Designed for 60 Hz only – not compatible with vessels standardized on 50 Hz systems
High‑speed operation results in more frequent overhauls than slow‑speed units
Maximum output of 350 kVA limits use on large vessels that need >1 MW auxiliary power

Typical Vessels: Offshore supply vesselCrew boat / patrol craftFerry (auxiliary power)Small container ship (<5,000 GT)Tugboat

Certifications: DNV GL Type ApprovalABS ClassificationUSCG Type ApprovalIMO D‑2 (electrical equipment)

Decision Guide: Choose if you need a compact, high‑speed 350 kVA generator for vessels operating on 400 V/60 Hz with space constraints and require quick start capability. Avoid if the vessel runs on 50 Hz, demands higher power output, or operates in environments requiring a higher IP protection rating.

Use Cases: Commonly installed as primary auxiliary generators on offshore supply vessels and crew boats, or as emergency standby units on ferries and small cargo ships where rapid power availability and limited installation space are critical.

Datasheet

HC5 350kVA 440V 50Hz unverified

· diesel generator set

Power (kVA)

350

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability from Cummins' long‑standing marine portfolio
Compact footprint relative to its 350 kVA rating, easing installation in limited spaces
Insulation class H allows operation at higher ambient temperatures typical of engine rooms
IP23 enclosure provides protection against solid foreign objects and limited moisture, suitable for deck‑mounted applications
Low harmonic distortion meets most vessel power quality standards

Weaknesses

Power rating (350 kVA) may be insufficient for larger vessels requiring high auxiliary loads
IP23 is not fully watertight; additional splash protection needed in harsh marine environments
Typical diesel‑engine maintenance intervals (oil change, filter replacement) add operational downtime
Noise level is moderate and may require acoustic treatment on passenger ships
Weight and mounting requirements can be significant for small craft

Typical Vessels: Offshore supply vesselFerrySmall cruise shipContainer feederCoastal tankerFishing factory vessel

Certifications: ABS Type ApprovalDNV GL ClassificationLloyd's Register Approval

Decision Guide: Choose if you need a dependable mid‑size auxiliary power source on vessels with limited engine‑room space and can accommodate an IP23 enclosure. Avoid if the vessel requires higher than 350 kVA, fully sealed (IP66/68) equipment, or ultra‑low noise operation without additional mitigation.

Use Cases: The HC5 is commonly installed as the main auxiliary generator on offshore supply ships, ferries and small cruise vessels to run hotel loads, navigation systems, and cargo handling gear. It also serves as a standby source for container feeders and coastal tankers where space and weight constraints favor a compact yet robust unit.

Datasheet

HC5 350kVA 440V 60Hz unverified

· diesel-driven alternator

Power (kVA)

350

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Cummins/Stamford reliability with extensive service network
Compact, modular design simplifies installation and maintenance
High efficiency fuel consumption for medium‑size power loads
Integrated control system enables parallel operation and remote monitoring
Class H insulation allows higher temperature operation

Weaknesses

IP23 enclosure offers limited protection against water spray; not suitable for harsh wet environments without additional shielding
Fixed 440 V/60 Hz output limits use on vessels requiring 50 Hz or higher voltage systems
Relatively heavy compared with newer lightweight generator sets
May require auxiliary cooling in very high ambient temperatures

Typical Vessels: Container shipTankerBulk carrierOffshore supply vesselCruise ferryNaval auxiliary

Certifications: ABSDNV GLLloyd's Register

Decision Guide: Choose if you need a proven, medium‑size (300–500 kVA) diesel generator with robust after‑sales support and can operate on 440 V/60 Hz systems. Avoid if the vessel requires 50 Hz power, a fully sealed (IP66+) enclosure, or weight‑critical installations.

Use Cases: Typically installed as the main service generator on medium‑sized cargo vessels, offshore supply ships, and cruise ferries to supply hotel load, cargo handling equipment, and emergency power. Also used as standby generators in naval auxiliaries where reliability and quick start are critical.

Datasheet

HC5 350kVA 690V 50Hz unverified

· marine diesel generator set

Power (kVA)

350

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High 350 kVA output in a relatively compact footprint for its class
Class H insulation permits operation at higher temperatures, improving reliability
Four‑pole construction provides smoother voltage and frequency stability
IP23 enclosure protects against splashing water and dust, suitable for typical ship engine rooms
Backed by Cummins' global service network and spare parts availability

Weaknesses

IP23 rating is not fully sealed; additional protection may be required in harsh marine environments
Physical size and weight are comparable to other 350 kVA units, limiting suitability for smaller vessels
Requires an external cooling system, adding installation complexity
Fixed 690 V output may need step‑up/step‑down conversion on ships with different bus voltages

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose the HC5 when you need a proven 350 kVA diesel generator with strong after‑sales support and can accommodate its IP23 enclosure in a standard engine‑room layout. Avoid it on vessels that require higher ingress protection (e.g., IP55) or have strict space/weight constraints.

Use Cases: The HC5 is commonly installed as the main auxiliary power source on medium to large commercial ships, supplying shipboard electricity for hotel services, cargo handling equipment and emergency systems where a reliable 690 V bus is required.

Datasheet

HC5 350kVA 690V 60Hz unverified

· high‑speed 4‑pole marine generator

Power (kVA)

350

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint for a 350 kVA rating thanks to the high‑speed design
Robust IP23 enclosure suitable for typical engine‑room environments
Class H insulation allows operation at elevated temperatures
Proven track record in commercial vessels with extensive field service support
Standard 690 V/60 Hz output matches most marine distribution systems

Weaknesses

Higher fuel consumption per kW compared with low‑speed, large‑diameter gensets
Limited to 690 V; vessels requiring higher bus voltages need a step‑up transformer
IP23 rating does not protect against heavy water spray or immersion
Four‑pole design limits maximum speed to ~1800 rpm, which may affect acoustic signature

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselFerry

Certifications: ABSDNV GL

Decision Guide: Choose if you need a reliable, compact 350 kVA generator for vessels operating on 690 V/60 Hz with standard marine classification approval. Avoid if the installation demands higher voltage busbars, ultra‑low fuel consumption, or an enclosure rating above IP23.

Use Cases: The HC5 350 kVA set is commonly installed as a main or auxiliary generator on medium‑size commercial ships, providing shipboard electricity for propulsion auxiliaries, cargo handling equipment, and hotel loads in typical engine‑room conditions.

Datasheet

HC5 400kVA 400V 50Hz unverified

· medium-speed diesel‑driven alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (400 kVA) suitable for large merchant ships
Robust four‑pole design provides stable frequency and low vibration
Class H insulation allows operation at higher temperatures, extending service life
IP23 enclosure protects against splashing water in engine rooms
Widely supported global after‑sales network from Cummins

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh dusty or corrosive environments without additional shielding
Physical size and weight can be limiting on vessels with tight machinery spaces
Single‑frequency (50 Hz) design may require separate units for dual‑frequency fleets
Diesel‑fuel driven, so emissions control and fuel handling are required
Maintenance intervals typical of medium‑speed diesel generators (oil changes, filter replacements)

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 400 kVA main generator for a medium‑to‑large commercial vessel, have space for a standard IP23 marine unit, and value Cummins global support. Avoid if: the installation area requires higher ingress protection (e.g., IP55), you need dual‑frequency capability, or weight/space constraints are critical.

Use Cases: Installed as the primary power source in the main engine room of large merchant vessels to supply propulsion auxiliaries, cargo handling equipment, and hotel services; also used as a standby generator on ships where redundancy is required.

Datasheet

HC5 400kVA 400V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 400 kVA in a compact footprint suitable for space‑constrained engine rooms
Proven Cummins/Stamford reliability with extensive service network worldwide
Integrated digital control system (Stamford Power Control) for easy monitoring and load sharing
Standardized 400 V/60 Hz output matches most auxiliary power distribution systems on U.S.‑flag vessels
Approved by major classification societies, simplifying installation approvals

Weaknesses

High‑speed design (≈1800 rpm) leads to higher fuel consumption than low‑speed gensets of similar rating
IP23 enclosure limits use in exposed or wet deck locations; requires a protected space
Noise and vibration levels are greater than those of larger, slower‑running generators
Limited to 400 V/60 Hz – not directly suitable for vessels requiring 50 Hz or higher voltage systems without step‑up transformers
Maintenance intervals are shorter than low‑speed units due to higher operating speeds

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise ship

Certifications: IMO Type ApprovalDNV GL ClassificationABS ClassificationUSCG Type Approval

Decision Guide: Choose the HC5 400 kVA when you need a compact, high‑power auxiliary generator for vessels operating on 60 Hz systems and have protected engine‑room space. Avoid it if fuel efficiency is paramount, the installation environment is exposed to weather, or the vessel requires 50 Hz or higher voltage outputs.

Use Cases: The HC5 is typically installed as an auxiliary power source on medium‑size merchant vessels—providing hotel loads, cargo handling equipment, and emergency power. It is common on U.S.-flag tankers and container ships where 60 Hz distribution is standard, as well as on offshore supply vessels that need a reliable, quickly responsive generator for dynamic positioning support.

Datasheet

HC5 400kVA 440V 50Hz unverified

· high‑speed diesel generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Cummins reliability with extensive global service network
Compact footprint and high power density suitable for space‑constrained installations
Standard 440 V three‑phase output matches most shipboard distribution systems
Integrated control panel with automatic voltage regulation (AVR)
ABS/DNV‑GL type approvals simplify classification approval

Weaknesses

Higher specific fuel consumption compared with low‑speed or medium‑speed gensets
Noise and vibration levels are relatively high; may require additional soundproofing
IP23 enclosure offers limited protection against water ingress, unsuitable for harsh exposure without extra shielding
Diesel‑only fuel system – no dual‑fuel capability for LNG or alternative fuels
Four‑pole design limits flexibility in frequency conversion for 60 Hz markets

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise linerFerry

Certifications: ABSDNV‑GLLloyd's RegisterIMO Type Approval (MSC.1/Circ.1403)

Decision Guide: Choose if you need a reliable, compact auxiliary power source up to 400 kVA on vessels with standard 440 V distribution and you value worldwide Cummins support. Avoid if the installation requires low emissions dual‑fuel capability, very low noise levels, or an enclosure rated for harsh marine exposure.

Use Cases: Typically installed as a main hotel‑load generator on medium‑size tankers, container ships, and offshore supply vessels; also used on cruise ships and ferries to supply lighting, HVAC, and auxiliary machinery where space is limited.

Datasheet

HC5 400kVA 440V 60Hz unverified

· high-speed diesel generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Cummins reliability and global service network
Compact footprint suitable for space‑constrained engine rooms
Insulation class H allows operation in high ambient temperatures
Integrated control package simplifies installation and monitoring

Weaknesses

Limited to 60 Hz operation, not ideal for vessels requiring 50 Hz
Higher specific fuel consumption compared with low‑speed gensets of similar rating
IP23 enclosure provides only splash protection; not suitable for harsh dusty or salty environments without additional shielding
May require larger cooling system than lower‑speed alternatives

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer ships (US‑flagged)Tankers (US‑flagged)

Decision Guide: Choose if you need a reliable, compact 400 kVA auxiliary power source for US‑market vessels operating at 60 Hz and have limited engine‑room space. Avoid if the vessel requires 50 Hz power, higher overall efficiency, or an enclosure rating above IP23 for harsh marine environments.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on passenger and offshore vessels operating primarily in US waters.

Datasheet

HC5 400kVA 690V 50Hz unverified

· high-speed marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 400 kVA in a relatively small footprint thanks to the HC5 high‑speed design
Robust insulation class H suitable for harsh marine temperature excursions
Four‑pole construction provides stable 50 Hz output with low harmonic distortion
IP23 enclosure offers protection against splashing water and limited dust, adequate for most engine rooms
Cummins/Stamford global support network simplifies spare parts logistics

Weaknesses

High‑speed operation can lead to higher fuel consumption compared with medium‑speed alternatives of similar rating
IP23 rating limits use in environments with heavy water spray or immersion risk; not suitable for exposed deck installations
Limited redundancy – a single unit must be sized carefully to meet peak load, otherwise auxiliary gensets are required
Noise and vibration levels higher than low‑speed generators, may require additional acoustic insulation

Typical Vessels: Container ships (up to 10 000 TEU)General cargo vesselsOffshore supply vesselsFerriesSmall cruise ships

Decision Guide: Choose if: you need a compact, high‑output generator for vessels with limited engine‑room space and have access to Cummins service support. Avoid if: the installation area is exposed to heavy spray or immersion, or if fuel efficiency and low acoustic signature are top priorities over size.

Use Cases: The HC5 400 kVA set is commonly installed as the main auxiliary generator on medium‑sized cargo vessels where space constraints demand a high‑speed unit. It also serves as a backup generator on offshore supply ships that require rapid start‑up and reliable power for hotel loads, navigation equipment, and dynamic positioning systems.

Datasheet

HC5 400kVA 690V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (400 kVA) suitable for medium‑size vessels' hotel and auxiliary loads
Insulation class H provides robust thermal tolerance for harsh marine environments
Four‑pole construction ensures stable frequency and lower vibration at 60 Hz
Proven Stamford/Cummins brand reputation for reliability and service support worldwide

Weaknesses

IP23 enclosure offers only limited protection against water spray; not suitable for heavily exposed or dust‑laden spaces
Diesel fuel consumption and emissions may be higher than newer hybrid or LNG‑based generators
Physical size and weight are typical of high‑power diesel gensets, requiring substantial engine room space
No built‑in emission control package (e.g., SCR) unless retrofitted

Typical Vessels: Bulk carrierProduct tankerContainer shipOffshore supply vesselCruise liner (hotel load auxiliary)

Decision Guide: Choose if: you need a proven, high‑output diesel generator with robust thermal insulation for vessels in the 300–500 kVA range and have adequate engine‑room space. Avoid if: you require a fully sealed (IP66+) unit, ultra‑low emissions compliance (IMO Tier III) without additional after‑treatment, or a compact hybrid solution.

Use Cases: The HC5 is typically installed as an auxiliary generator to supply hotel services, cargo handling equipment, and emergency power on medium‑size merchant ships. It can also serve as a standby unit for propulsion support on vessels that rely primarily on diesel engines.

Datasheet

HCI5 400kVA 400V 50Hz unverified

· brushless marine alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (400 kVA) suitable for medium‑large ships' hotel and propulsion auxiliaries
Robust Class H insulation tolerates high ambient temperatures
IP23 enclosure provides splash protection while allowing easy access for maintenance
Proven Cummins/Stamford reliability with extensive service network
Four‑pole design ensures stable 50 Hz frequency under varying loads

Weaknesses

IP23 rating is only splash‑proof; additional sealing may be required in dusty or harsh marine environments
Physical size and weight are larger than newer compact generator sets, impacting installation space
Single‑frequency (50 Hz) only – not suitable for vessels requiring dual‑frequency capability
Typically paired with a Cummins engine; integration with non‑Cummins prime movers can be more complex
Higher upfront cost compared to generic OEM alternators of similar rating

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: DNVABS

Decision Guide: Choose if you need a proven, high‑capacity 400 kVA alternator with robust thermal performance for a 50 Hz vessel and value the Cummins service network. Avoid if space, weight or dual‑frequency requirements dominate, or if a higher IP rating is mandatory for the installation area.

Use Cases: Commonly installed as the main auxiliary generator on container ships and bulk carriers, as emergency power on tankers, to supply hotel loads on cruise vessels, and as part of the DP power package on offshore supply ships where reliable, continuous electricity is critical.

Datasheet

HCI5 400kVA 400V 60Hz unverified

· brushless alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 400 kVA in a relatively small footprint
Brush‑less design reduces maintenance intervals
Integrated Cummins control system with standard marine interfaces
Proven reliability from widespread use on commercial ships
Four‑pole construction provides stable voltage regulation

Weaknesses

High‑speed operation (≈1800 rpm) generates more noise than low‑speed units
IP23 enclosure offers limited protection against water spray, unsuitable for exposed deck locations
Overload capability is lower than that of larger low‑speed generators
Higher rotational speed can increase bearing wear and cooling demand

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a compact, proven 400 kVA generator for auxiliary or emergency power on vessels where space is at a premium and the installation area can be kept dry. Avoid if the application demands very low noise, high overload capability, or exposure to harsh wet environments that require a higher IP rating.

Use Cases: Commonly installed as an auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on medium‑size merchant ships; also used in dual‑generator configurations for redundancy on cruise and offshore vessels.

Datasheet

HCI5 400kVA 440V 50Hz unverified

· medium-speed diesel generator set

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 400 kVA in a compact alternator footprint for its class
Proven reliability of the Cummins Stamford HCI5 series with long service intervals
Integrated control and monitoring system compatible with most ship automation platforms
Approved by major classification societies (ABS, DNV‑GL) for marine installation
Four‑pole design provides stable 50 Hz output suitable for large hotel loads

Weaknesses

IP23 enclosure offers limited protection against water spray; not suitable for harsh wet decks without additional shielding
Physical size and weight are substantial, requiring dedicated engine room space and heavy foundations
Requires an external cooling system (air‑to‑water) which adds complexity to the installation
Only supplied in 50 Hz version – not directly usable on vessels standardized on 60 Hz
Higher initial capital cost compared with lower‑rated generators from generic OEMs

Typical Vessels: Offshore supply vesselFerry / Ro‑Ro passenger shipCoastal bulk carrierTugboatSmall to medium sized tankers

Certifications: ABSDNV-GLLloyd's Register

Decision Guide: Choose if you need a reliable 400 kVA source for continuous hotel and auxiliary power on vessels that operate on 50 Hz systems, and you have sufficient engine‑room space for the unit and its cooling plant. Avoid if weight/space constraints are critical, the vessel operates on 60 Hz, or only a lower ingress protection rating is acceptable.

Use Cases: Typically installed as part of an auxiliary power plant on offshore supply ships, ferries, and coastal cargo vessels to run hotel services, dynamic positioning electronics, and emergency generators. The unit often drives a medium‑speed diesel engine in a genset configuration that feeds the ship’s electrical distribution network.

Datasheet

HCI5 400kVA 440V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact integrated engine‑alternator design reduces footprint on board
Proven Cummins/Stamford reliability with extensive service network
Class H insulation allows operation at higher temperatures
Standard 440 V, 60 Hz output matches most existing shipboard electrical systems
IP23 enclosure provides splash protection suitable for typical engine rooms

Weaknesses

IP23 rating offers only limited dust and water ingress protection; not suitable for harsh exposure areas
Higher fuel consumption compared with newer low‑speed or hybrid gensets of similar power
Noise level is moderate; may require additional acoustic insulation in passenger vessels
Fixed voltage/frequency (440 V, 60 Hz) limits flexibility for ships using other standards without transformers
Weight and mounting requirements can be substantial for smaller vessels

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselFerry

Decision Guide: Choose if: you need a compact, proven 400 kVA generator for standard 440 V/60 Hz shipboard power with robust after‑sales support. Avoid if: the installation requires higher ingress protection (IP55+), ultra‑low fuel consumption, or operation on vessels using non‑standard voltages/frequencies without additional conversion equipment.

Use Cases: Typically installed as a main auxiliary generator in medium‑sized merchant ships to supply hotel loads, cargo handling gear, and emergency power. Also used as a standby unit for critical systems on cruise ships and offshore support vessels where reliability and quick service are paramount.

Datasheet

HCI5 400kVA 690V 50Hz unverified

· marine alternator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in hot engine rooms.
Compact 4‑pole design provides stable 1500 rpm output at 50 Hz.
Proven Cummins reliability and long service intervals.
IP23 enclosure protects against dust and spray, suitable for typical shipboard environments.
Standard 690 V rating matches most marine distribution systems.

Weaknesses

IP23 protection is not splash‑proof; unsuitable for harsh wet locations without additional shielding.
Fixed speed (1500 rpm) limits flexibility for variable‑speed applications.
Requires regular brush inspection/replacement if the model uses brushed rotors.
400 kVA may be undersized for large cruise or offshore vessels requiring higher hotel loads.

Typical Vessels: TankersContainer shipsBulk carriersGeneral cargo vesselsOffshore supply vessels

Decision Guide: Choose if you need a reliable 400 kVA auxiliary generator that matches the standard 690 V shipboard bus, operates in moderate marine environments and benefits from Cummins service support. Avoid if the installation demands higher ingress protection (IP55+), variable‑speed generation, or power ratings above 400 kVA.

Use Cases: Commonly installed as a main auxiliary generator for propulsion plant electrical supply, hotel load support on medium‑size cargo ships, and as part of an emergency power system where rapid start‑up and proven reliability are critical.

Datasheet

HCI5 400kVA 690V 60Hz unverified

· air-cooled high-speed marine alternator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 400 kVA in a relatively small footprint, saving valuable engine room space.
Integrated brushless design reduces maintenance intervals and eliminates the need for regular brush replacement.
Standard 690 V three‑phase output matches most modern marine electrical distribution systems, simplifying integration.
Proven Cummins/Stamford reliability with extensive service network worldwide.
Class H insulation allows operation at higher temperatures, enhancing durability in hot climates.

Weaknesses

Higher fuel consumption at part load compared with slower‑speed, low‑rpm generators.
IP23 enclosure provides limited protection against water ingress; extra sealing may be required for very wet environments.
Limited overload capability (typically 110 % for 30 min) relative to some competing models that offer higher short‑term ratings.
Vibration levels can be higher due to the high rotational speed, necessitating careful mounting and monitoring.
May not meet the most stringent emission standards without additional after‑treatment equipment.

Typical Vessels: Platform Supply Vessel (PSV)Offshore Support VesselFerrySmall cruise shipTugboatPatrol / Coast Guard vessel

Certifications: ABS Type ApprovalDNV GL ClassificationLloyd's Register Approval

Decision Guide: Choose if: you need a compact, high‑power auxiliary generator for a 690 V system and value proven reliability with low maintenance. Avoid if: space is not an issue but fuel efficiency at low load or ultra‑low emissions are top priorities, or the installation environment exceeds IP23 protection limits.

Use Cases: Commonly installed as a main hotel‑load generator on offshore supply vessels, providing continuous power for cargo handling equipment, accommodation services, and emergency backup. Also used on ferries and small cruise ships to support propulsion auxiliaries and critical safety systems.

Datasheet

HCI5 500kVA 400V 50Hz unverified

· high-speed marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 500 kVA in a relatively compact footprint compared to low‑speed units.
H‑class insulation provides excellent thermal endurance and reliability under continuous operation.
Integrated air‑cooling system (IP23) suited for typical engine‑room environments, reducing auxiliary cooling requirements.
Proven track record with Cummins marine engines; easy electrical integration and common control interfaces.
High efficiency (~95 %) leading to lower fuel consumption for auxiliary power.

Weaknesses

Enclosure IP23 is not dust‑tight or splash‑proof, limiting use in harsh external locations.
Higher acoustic noise level than low‑speed, water‑cooled generators; may require additional sound insulation.
Fixed 400 V/50 Hz output – not ideal for vessels standardising on 660 V or 60 Hz systems without transformers.
Requires specific Cummins control electronics; retrofits on non‑Cummins setups can be more complex.
Weight is higher than comparable low‑speed, water‑cooled units of similar rating.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselFerry

Certifications: ABSDNV GL

Decision Guide: Choose if you need a compact, high‑efficiency 500 kVA generator for standard 400 V/50 Hz ship service power and already use Cummins propulsion or auxiliary engines. Avoid if the vessel requires higher voltage (e.g., 660 V), explosion‑proof enclosures, or ultra‑low noise operation.

Use Cases: Typically installed as a main auxiliary generator supplying hotel loads, cargo pump systems, navigation equipment, and emergency power on medium to large commercial vessels. Frequently paired with Cummins diesel engines in integrated genset packages for reliable, continuous shipboard electricity.

Datasheet

HCI5 500kVA 400V 60Hz unverified

· diesel-driven alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 500 kVA in a relatively small footprint, saving valuable deck space.
Robust ABS/DNV‑approved construction with IP23 enclosure suitable for marine environments.
Standard 400 V/60 Hz output matches most shipboard electrical systems, simplifying integration.
Proven Cummins service network worldwide ensures spare parts availability and technical support.
Four‑pole design provides stable voltage regulation under varying load conditions.

Weaknesses

Higher acoustic noise level compared with low‑speed or medium‑speed gensets of similar rating.
Fuel consumption rises sharply at light loads; not optimal for vessels with highly variable power demand.
Limited overload capability (typically 110 % for short periods) may restrict peak‑shaving applications.
Requires regular oil and filter changes due to high engine speed, increasing maintenance intervals.
IP23 enclosure offers limited protection against heavy spray or immersion; not suited for exposed outdoor installations.

Typical Vessels: Offshore supply vesselFerryCruise ship (hotel load)Container ship (auxiliary power)Tanker (emergency generator)

Certifications: ABSDNV

Decision Guide: Choose if you need a compact, high‑power auxiliary generator with global Cummins support and standard 400 V/60 Hz output for medium‑sized vessels. Avoid if ultra‑low noise, very low part‑load fuel consumption, or higher ingress protection (IP≥44) are critical requirements.

Use Cases: The HCI5 is typically installed as a main auxiliary generator on offshore supply ships and ferries, providing hotel services, cargo refrigeration power, and emergency backup. It also serves as a secondary generator on larger container vessels where space constraints demand high power density.

Datasheet

HCI5 500kVA 440V 50Hz unverified

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (500 kVA) in a single unit reduces the number of generators needed for medium‑size vessels.
Class‑H insulation allows operation at elevated temperatures, improving reliability in warm climates.
IP23 rating provides protection against dust and light water spray, suitable for typical deck environments.
Cummins/Stamford brand reputation ensures wide service network and spare‑parts availability worldwide.
Four‑pole design delivers stable 50 Hz output compatible with most international shipboard electrical systems.

Weaknesses

IP23 enclosure is not fully sealed against heavy spray or immersion, limiting placement in harsh weather‑exposed locations.
440 V nominal voltage may require additional step‑up/down transformers for vessels standardized on 415 V or other voltages.
Physical size and weight are typical of a 500 kVA unit, requiring substantial installation space and structural support.
Fuel consumption can be relatively high when operating at low loads, affecting overall efficiency.
No built‑in exhaust after‑treatment; compliance with emission control areas may need auxiliary scrubbers or selective catalytic reduction.

Typical Vessels: Container shipBulk carrierTankerGeneral cargo vesselCruise liner (auxiliary power)Offshore supply vessel

Decision Guide: Choose if you need a proven, high‑output auxiliary generator with strong after‑sales support and can accommodate an IP23 deck installation. Avoid if the installation area is exposed to heavy spray or immersion, if space/weight constraints are critical, or if a higher voltage standard (e.g., 415 V) is required without additional transformers.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size cargo ships, providing power for hotel services, cargo handling equipment, and emergency systems. Also used in cruise vessels to supply hotel loads and in offshore support ships where reliable mid‑range generation is essential.

Datasheet

HCI5 500kVA 440V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and high power density compared with low‑speed generators of the same rating
Proven Cummins/Stamford reliability and worldwide service network
Four‑pole design provides stable voltage and frequency output for hotel loads
IP23 enclosure offers protection against dust and limited splashing, suitable for most engine rooms
Class H insulation allows operation in high ambient temperature zones

Weaknesses

Higher rotational speed (≈1800 rpm) leads to increased bearing wear and may require more frequent maintenance than low‑speed units
IP23 rating does not protect against heavy water ingress; additional sealing may be needed in very wet environments
Fixed 440 V/60 Hz output limits flexibility for vessels that operate on 50 Hz or other voltage levels
Oil‑lubricated bearings demand regular oil analysis and change intervals

Typical Vessels: Container shipsCruise linersOffshore supply vesselsLNG carriers (auxiliary power)Naval auxiliary ships

Decision Guide: Choose if you need a compact, high‑power auxiliary generator for 60 Hz vessels with access to Cummins service support and can accommodate an IP23 enclosure. Avoid if the installation requires full splash protection (higher IP rating), operation on 50 Hz systems, or you prefer low‑speed, lower‑maintenance units.

Use Cases: Commonly installed as part of a ship's auxiliary power plant to supply hotel loads, deck machinery, and emergency power; often paired with diesel engines in generator sets for medium‑size commercial vessels.

Datasheet

HCI5 500kVA 690V 50Hz unverified

· air‑cooled marine alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 500 kVA in a relatively compact footprint
Robust Cummins engineering with long service life and low maintenance intervals
Integrated control and protection features compatible with standard shipboard automation systems
Four‑pole design provides stable 50 Hz output at 1500 rpm, matching most marine engines
IP23 enclosure suitable for engine‑room environments where ventilation is available

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for harsh, wet locations without additional shielding
Fixed 690 V output may require step‑up transformers on vessels using higher voltage distribution systems
Air cooling requires adequate airflow and can be noisier than liquid‑cooled alternatives
Weight and mounting dimensions are relatively high compared with newer lightweight composite designs (exact figures not publicly disclosed)
Limited to four poles; cannot be reconfigured for 60 Hz operation without speed change

Typical Vessels: TankerContainer shipBulk carrierGeneral cargo vesselOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑output alternator that fits standard 690 V/50 Hz marine power systems and you have adequate ventilation for air cooling. Avoid if: the installation demands higher ingress protection (IP≥54), lower acoustic signature, or direct integration with 60 Hz equipment without speed conversion.

Use Cases: The HCI5 is commonly installed on medium‑size merchant vessels as the main generator set for auxiliary power, supplying shipboard services such as lighting, HVAC, cargo handling equipment, and emergency systems. It is also used in cruise ships and offshore platforms where a reliable, compact alternator paired with a diesel engine is required.

Datasheet

HCI5 500kVA 690V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (500 kVA) in a compact footprint for auxiliary plant
Class H insulation allows continuous operation at temperatures up to ~180 °C
IP23 enclosure provides protection against dust and water spray typical of engine‑room environments
Four‑pole design delivers stable 60 Hz frequency with low vibration
Widely supported by Cummins service network, simplifying spares and maintenance

Weaknesses

IP23 rating is not fully sealed; unsuitable for harsh marine exposure requiring IP55 or higher
Fixed 60 Hz output – not directly compatible with vessels standardized on 50 Hz without rewinding
Physical size and weight can be limiting on smaller ships or retrofits
Requires dedicated cooling fans, adding to auxiliary power consumption and noise
No built‑in redundancy; a single unit failure impacts all hotel loads unless paired with another generator

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10 000 TEU)Cruise linerOffshore supply vesselLNG carrier

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a proven 500 kVA, 690 V auxiliary generator for 60 Hz vessels, value Class H temperature capability and have access to Cummins service support. Avoid if the installation requires higher ingress protection (IP55+), must operate on 50 Hz without modification, or space/weight constraints are critical.

Use Cases: The HCI5 is typically installed as a main auxiliary generator supplying propulsion‑related hotel loads, emergency power for navigation and safety systems, and as part of redundant power arrangements on large ocean‑going vessels where high reliability and temperature tolerance are essential.

Datasheet

HCI5 600kVA 400V 50Hz unverified

· high-speed diesel generator

Power (kVA)

600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 600 kVA in a relatively small footprint thanks to its high‑speed design.
Integrated control and protection system (Cummins PowerCommand) simplifies operation and monitoring.
Robust insulation class H and IP23 enclosure provide good resistance to heat and marine environment exposure.
Fast start‑up time (typically <30 s) suitable for emergency power applications.
Proven Cummins/Stamford service network worldwide, facilitating spare parts and technical support.

Weaknesses

Higher fuel consumption per kW compared with low‑speed generators of similar rating.
Noise and vibration levels are greater than those of slower‑running units; may require additional acoustic insulation.
IP23 enclosure offers limited protection against water ingress – not suitable for exposed deck installations without extra shielding.
Limited redundancy if only a single unit is installed; many operators pair two units for 24 / 7 operation.
Maintenance intervals are shorter than low‑speed alternatives, increasing planned downtime.

Typical Vessels: Medium‑size tankers (up to ~30,000 dwt)Container ships (20–40 k TEU)Bulk carriers (15–35 k dwt)Offshore supply vesselsCruise ship auxiliary power systems

Certifications: IMO D‑2DNV GL Type Approval

Decision Guide: Choose if you need a compact, high‑output auxiliary generator with fast start‑up and extensive after‑sales support, especially on vessels where space is at a premium. Avoid if low fuel consumption, ultra‑quiet operation, or higher ingress protection (IP44+) are critical, or when a low‑speed, directly coupled generator better matches the vessel's power strategy.

Use Cases: The HCI5 600 kVA unit is typically installed as an auxiliary generator on merchant ships to supply hotel loads, cargo handling equipment, and emergency power. It is also used in offshore support vessels where rapid power availability for dynamic positioning or drilling auxiliaries is required.

Datasheet

HCI5 600kVA 400V 60Hz unverified

· diesel generator set

Power (kVA)

600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power rating (600 kVA) suitable for large ship service loads
Class‑H insulation allows operation in high ambient temperature environments
Four‑pole construction provides smooth 60 Hz voltage and frequency stability
Proven Cummins/Stamford after‑sales support network worldwide
Modular design simplifies installation and maintenance in engine rooms

Weaknesses

IP23 enclosure offers limited protection against dust and water spray; not suitable for exposed deck installations
Physical size and weight are substantial, requiring dedicated space and structural support
Fuel consumption at full load is higher than newer low‑speed or hybrid gensets
Requires an external cooling system to maintain optimum operating temperature
No built‑in redundancy; a second unit is needed for critical power continuity

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container Vessels (ULCV)Cruise shipsOffshore supply vesselsRo‑Ro ferries

Decision Guide: Choose if: you need a proven, high‑power auxiliary generator for a large vessel with ample engine‑room space and can accommodate an IP23 enclosure. Avoid if: the installation requires higher ingress protection (IP55/65), weight or footprint is a limiting factor, or you are targeting ultra‑low fuel consumption solutions.

Use Cases: The HCI5 is typically installed as the main auxiliary generator on large tankers, container ships and cruise liners to supply hotel loads, cargo handling equipment, and emergency power. It is also used on offshore support vessels where a reliable, high‑capacity diesel genset is required for prolonged operations at sea.

Datasheet

HCI5 600kVA 440V 50Hz unverified

· diesel‑driven synchronous generator

Power (kVA)

600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (600 kVA) in a compact footprint suitable for medium‑to‑large ships
Robust Class H insulation allows operation at elevated temperatures, improving reliability in hot climates
Four‑pole design provides stable 50 Hz frequency with low harmonic distortion
Proven Cummins/Stamford brand reputation for durability and long service intervals
IP23 enclosure offers protection against splashing water while allowing easy access for maintenance

Weaknesses

IP23 rating does not protect against dust or heavy spray, requiring additional shielding in harsh environments
External cooling system may be needed for continuous full‑load operation, adding complexity
Noise level can be relatively high compared with newer low‑speed generator sets
Weight and mounting requirements are significant; retrofits on smaller vessels may be challenging

Typical Vessels: Container shipBulk carrierCruise linerFerryOffshore supply vessel

Decision Guide: Choose if: you need a reliable 600 kVA auxiliary power source on a vessel that already uses Cummins/Stamford engines, and space for an IP23‑rated unit is available. Avoid if: the installation environment demands higher ingress protection (IP54+), ultra‑low noise, or minimal weight and footprint.

Use Cases: Commonly installed as main auxiliary generators on large merchant ships to supply hotel loads, cargo handling equipment, and emergency power; also used in offshore support vessels where redundancy and proven engine‑generator integration are critical.

Datasheet

HCI5 600kVA 440V 60Hz unverified

· medium-speed diesel generator

Power (kVA)

600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated ambient temperatures
Cummins reputation for reliability and extensive service network
Integrated control panel simplifies monitoring and load management
Approved by major classification societies (e.g., ABS, DNV)
Four‑pole design provides stable 60 Hz output suitable for most shipboard loads

Weaknesses

Physical size and weight are larger than low‑speed or gas turbine alternatives
Fuel consumption is higher compared with newer Tier III‑compliant engines without after‑treatment
Emissions may not meet the latest strict environmental regulations without additional scrubbers
Single‑engine configuration offers limited redundancy for critical power needs
Maintenance intervals are typical of medium‑speed diesel (e.g., oil changes every 500 h)

Typical Vessels: Container shipBulk carrierTankerCruise shipFerryOffshore supply vessel

Certifications: ABSDNV

Decision Guide: Choose the HCI5 when you need a proven, medium‑speed diesel generator with high temperature tolerance and strong classification approvals for vessels in the 500–2 000 kW auxiliary power range. Avoid it if space is at a premium, you require the lowest possible emissions without added after‑treatment, or you prefer a redundant multi‑engine configuration.

Use Cases: The HCI5 is typically installed as the main auxiliary generator on medium‑sized cargo and passenger vessels, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. It is also used in shore‑power applications where robust, continuous operation is required.

Datasheet

HCI5 600kVA 690V 50Hz unverified

· high-efficiency 4‑pole marine alternator

Power (kVA)

600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability from Cummins/Stamford heritage
High power density suitable for main‑ship generation
Integrated control system compatible with Cummins engines
Class H insulation allows operation in high ambient temperatures
IP23 enclosure provides protection against splashing water and dust

Weaknesses

Large physical footprint and weight limit installation in space‑constrained vessels
Designed for 50 Hz only – not suitable for ships requiring 60 Hz power
IP23 rating is not fully sealed; additional ventilation may be needed in harsh marine environments
Higher initial capital cost compared with some low‑cost generic alternators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 600 kVA main generator for a 50 Hz vessel, have sufficient engine bay space, and want the support of Cummins service network. Avoid if: your vessel operates on 60 Hz, has severe weight/space constraints, or requires a fully sealed (IP66+) enclosure.

Use Cases: Typically installed as part of the main propulsion power plant on large merchant vessels to supply both propulsion and hotel loads, and can also serve as an emergency generator when paired with appropriate control gear.

Datasheet

HCI5 600kVA 690V 60Hz unverified

· high-speed marine generator

Power (kVA)

600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 600 kVA in a relatively compact footprint compared with low‑speed units.
Proven reliability of the Cummins Stamford line with extensive service history worldwide.
Integrated control and monitoring system simplifies operation and fault diagnostics.
Class H insulation allows stable performance at elevated temperatures typical on board.
IP23 enclosure provides protection against splashing water while allowing easy access for maintenance.

Weaknesses

Higher rotational speed (≈1800 rpm) results in greater acoustic noise than low‑speed generators.
Fuel consumption is higher at part‑load compared with slower‑running alternatives.
More frequent overhauls are typical for high‑speed units due to increased wear.
Limited redundancy if installed as a single set; vessels requiring multiple independent sources may need additional units.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a compact, high‑output auxiliary generator with a strong service record and can accommodate the higher noise level. Avoid if: low acoustic signature or maximum fuel efficiency at part‑load are primary concerns, or if multiple independent emergency sources are required.

Use Cases: Commonly installed as the main auxiliary power source for hotel loads, cargo handling equipment, and emergency generators on large merchant vessels where space is limited and a proven, service‑backed solution is preferred.

Datasheet

HCI5 700kVA 400V 50Hz unverified

· diesel synchronous generator

Power (kVA)

700

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 700 kVA in a relatively small footprint suitable for medium‑size vessels
Proven Cummins/Stamford reliability with extensive service network worldwide
Integrated control and protection system (Stamford Power Control) simplifies installation and operation
Insulation class H provides good thermal endurance for continuous marine duty
Standard marine certifications (ABS, DNV‑GL) streamline classification approval

Weaknesses

Higher specific fuel consumption than medium‑speed or low‑speed generators at full load
Noise and vibration levels are greater than slower‑running gensets, requiring additional mitigation on passenger vessels
Maintenance intervals are shorter than for low‑speed units, increasing planned downtime
Single‑unit design limits redundancy unless a second set is installed
IP23 enclosure offers limited protection against water ingress; not suitable for harsh wet‑deck locations

Typical Vessels: Offshore supply vesselFerryCoastal cargo shipYacht / superyachtResearch or survey vessel

Certifications: ABSDNV‑GL

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for vessels up to ~10 000 GT where space and weight are at a premium and a proven service network is required. Avoid if ultra‑low fuel consumption, very low noise, or multi‑redundant power architecture (e.g., cruise ships) are primary design drivers.

Use Cases: The HCI5 700 kVA typically powers hotel loads, deck machinery, dynamic positioning auxiliaries, and serves as an emergency generator on offshore support vessels, ferries, and large yachts where a reliable, high‑capacity source is needed without the bulk of low‑speed gensets.

Datasheet

HCI5 700kVA 400V 60Hz unverified

· air-cooled high‑speed diesel generator

Power (kVA)

700

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 700 kVA in a relatively small footprint (IP23 enclosure).
Proven Cummins reliability with integrated control system for easy monitoring and diagnostics.
Fast start‑up and load acceptance, suitable for both main and emergency power applications.
Standard 400 V/60 Hz output matches most shipboard electrical systems without need for transformers.

Weaknesses

Higher fuel consumption per kW compared with low‑speed, water‑cooled generators of similar rating.
Increased acoustic noise due to high rotational speed; may require additional sound insulation on quiet vessels.
Limited to 400 V/60 Hz – not directly compatible with ships that operate on 50 Hz or higher voltage systems without conversion equipment.

Typical Vessels: Offshore Supply VesselPlatform Support VesselFerryCruise Ship (auxiliary power)Medium‑size Container Ship

Certifications: ABSDNV‑GL

Decision Guide: Choose if: you need a compact, high‑output generator for limited engine room space and fast start‑up; the vessel operates on a 400 V/60 Hz system; you value Cummins’ service network. Avoid if: fuel efficiency is paramount over size, the ship requires 50 Hz or higher voltage systems, or strict low‑noise requirements cannot be met with additional mitigation.

Use Cases: Commonly installed as the main propulsion generator on offshore supply and platform support vessels, as an auxiliary power source for ferries and cruise ships, and as emergency generators on bulk carriers where space constraints dictate a high‑speed solution.

Datasheet

HCI5 700kVA 440V 50Hz unverified

· brushless high‑speed marine generator

Power (kVA)

700

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for medium‑size vessels
H‑class insulation allows operation at elevated temperatures
Compact IP23 enclosure fits standard engine‑room layouts
Proven reliability from the Cummins/Stamford product line
Integrated control and protection features compatible with common ship automation systems

Weaknesses

Open‑top IP23 design requires adequate ventilation and may be vulnerable to water ingress in harsh environments
High‑speed operation can result in higher fuel consumption compared with low‑speed gensets of similar rating
Single‑frequency (50 Hz) output limits use on vessels that require 60 Hz power without additional conversion equipment
Maintenance of the brushless exciter still required at scheduled intervals
Physical size may be restrictive for small craft or retrofits with limited engine‑room space

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: IMO Type ApprovalDNV GL Approved

Decision Guide: Choose if you need a reliable 700 kVA auxiliary generator with compact footprint and can accommodate an IP23 enclosure in a well‑ventilated engine room. Avoid if the vessel requires fully sealed (IP55+) equipment, dual‑frequency output, or the lowest possible fuel consumption at the cost of larger low‑speed units.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel loads, cargo handling gear, and emergency power on medium to large commercial vessels. Also used in cruise ships for hotel services and in offshore supply vessels where space and weight efficiency are critical.

Datasheet

HCI5 700kVA 440V 60Hz unverified

· diesel-driven alternator

Power (kVA)

700

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for medium‑size vessels (≈700 kVA)
H‑class insulation provides excellent thermal endurance and overload capability
Compact IP23 enclosure fits standard engine‑room spaces while protecting against splashing water
Four‑pole design delivers stable 60 Hz output with low harmonic distortion
Cummins Stamford reputation for durability and worldwide service support

Weaknesses

IP23 rating is not dust‑tight; unsuitable for highly contaminated or explosive atmospheres
Fixed 440 V output may require step‑up/down transformers for vessels with different bus voltages
Weight and footprint are typical of high‑speed diesel gensets, limiting installation in very tight spaces
No built‑in exhaust after‑treatment (e.g., SCR) listed; emissions compliance may need external solutions

Typical Vessels: Container shipsBulk carriersGeneral cargo vesselsOffshore supply vesselsCruise ships (hotel load)Ferries

Certifications: IMO D-2

Decision Guide: Choose if you need a proven, mid‑size diesel generator with robust thermal capability and standard 440 V/60 Hz output for auxiliary or hotel power on commercial vessels. Avoid if the installation requires explosion‑proof (Ex) protection, higher voltage levels, or integrated emissions control that this base model does not provide.

Use Cases: Typically installed as an auxiliary generator to supply shipboard electrical loads such as lighting, HVAC, cargo handling equipment, and emergency power. Also used on offshore platforms for continuous hotel load and as a standby unit for propulsion generators.

Datasheet

HCI5 700kVA 690V 50Hz unverified

· high‑speed diesel‑driven alternator

Power (kVA)

700

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Cummins/Stamford reliability with extensive global service network
Integrated control system (Comms) simplifies installation and monitoring
Compact footprint for a 700 kVA unit, suitable for vessels with limited engine‑room space
Class H insulation allows operation in high ambient temperature zones

Weaknesses

Higher fuel consumption compared with low‑speed or dual‑fuel generators of similar rating
Relatively large vibration levels typical of high‑speed units; may require additional isolation mounts
Single‑engine configuration limits redundancy unless paired with another set

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer ships (mid‑size)Tankers (product/chemical)

Certifications: DNVABS

Decision Guide: Choose if you need a robust, widely supported 700 kVA generator with compact dimensions and can accommodate the higher fuel burn of a high‑speed unit. Avoid if ultra‑low emissions (Tier III) or maximum fuel efficiency are primary concerns, or if redundancy must be built into a single engine room.

Use Cases: Typically installed as part of the auxiliary power plant to supply hotel loads, cargo handling equipment, and emergency power on passenger vessels and offshore support ships. It can also serve as a main‑generator in vessels where space constraints favor high‑speed units.

Datasheet

HCI5 700kVA 690V 60Hz unverified

· diesel generator set

Power (kVA)

700

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design delivers 700 kVA in a relatively small footprint (IP23 enclosure).
Insulation class H provides good thermal endurance and reliability at continuous load.
Widely accepted by classification societies, facilitating installation on new builds and retrofits.
Robust Cummins engine platform with proven service support and spare‑parts availability worldwide.
Integrated control system offers remote monitoring and automated load management.

Weaknesses

Fixed‑speed operation can be less fuel‑efficient at low loads compared with variable‑speed gensets.
Noise and vibration levels are higher than newer low‑speed or hybrid alternatives.
Requires regular oil changes and diesel maintenance typical of high‑speed engines.
Limited to 60 Hz; not directly suitable for vessels that operate on 50 Hz without a frequency converter.

Typical Vessels: Bulk carrierOil tankerContainer shipCruise linerOffshore supply vessel

Certifications: ABSDNV GLIMO Type Approval

Decision Guide: Choose if you need a proven, high‑power (≈700 kVA) auxiliary generator that fits within limited engine‑room space and you value worldwide service support. Avoid if your vessel requires ultra‑low emissions (Tier IV), variable‑speed operation for fuel savings at part load, or strict 50 Hz power supply without conversion equipment.

Use Cases: The HCI5 is typically installed as the main auxiliary generator on large merchant ships to supply hotel loads, cargo handling gear, and emergency power. It also serves as a standby unit on cruise vessels where redundancy and rapid start‑up are critical.

Datasheet

HCI6 700kVA 400V 50Hz unverified

· high-speed diesel generator

Power (kVA)

700

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint thanks to high‑speed (≈1800 rpm) operation, saving valuable engine‑room space
Proven Cummins/Stamford reliability with extensive global service network
Integrated control and protection system that meets IMO D‑2 safety requirements
Good fuel efficiency at rated load for a generator of this size

Weaknesses

Higher operating speed leads to increased wear and noise compared with low‑speed units
IP23 enclosure provides limited protection against water ingress; additional ventilation or splash guards may be required
Limited overload capability relative to larger, slower‑speed generators
Insulation class H (max 180 °C) requires diligent cooling management in hot climates

Typical Vessels: Offshore supply vesselFerryMedium‑size container shipCruise ship hotel loadTugboatFishing vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a compact, high‑speed auxiliary generator around 700 kVA and value Cummins service support. Avoid if space is not constrained but low noise, higher overload capacity, or water‑tight enclosure are primary concerns.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, emergency generators, and secondary propulsion systems on medium‑size commercial vessels where engine‑room volume is limited.

Datasheet

HCI6 700kVA 400V 60Hz unverified

· high‑speed diesel‑driven alternator

Power (kVA)

700

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint thanks to high‑speed engine design
Integrated control and monitoring system (Power Management System) simplifies operation
Class H insulation permits higher operating temperatures and improves reliability
IP23 enclosure provides easy access for routine maintenance in sheltered spaces
Proven track record on a wide range of merchant vessels

Weaknesses

Higher fuel consumption and noise compared with low‑speed generators of similar rating
IP23 rating is not fully weather‑proof; requires protected installation area
Limited overload capability (typically 110 % for short periods only)
May require additional cooling water pump arrangements on some installations
Spare‑parts logistics can be slower in regions where Cummins service network is limited

Typical Vessels: Container shipTankerBulk carrierCruise ferryOffshore supply vesselNaval auxiliary

Certifications: DNVABS

Decision Guide: Choose if you need a compact, proven 700 kVA auxiliary generator with integrated control and can provide a sheltered installation space. Avoid if ultra‑low noise, maximum fuel efficiency, or fully weather‑proof (IP66+) enclosure are primary requirements, or if power demand exceeds ~1 MVA.

Use Cases: Provides shipboard hotel load power, emergency standby generation, and supplemental power for dynamic positioning or hybrid propulsion systems on medium‑to‑large commercial vessels.

Datasheet

HCI6 700kVA 440V 50Hz unverified

· medium-speed diesel generator set

Power (kVA)

700

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven reliability of Cummins Stamford marine gensets with a long service history worldwide.
Integrated control and automatic voltage regulation (AVR) simplifies installation and operation.
Robust IP23 enclosure and Class H insulation provide durability in harsh marine environments.
Extensive global after‑sales support and spare‑parts network from Cummins.
Modular design allows easy coupling with a range of diesel engines, including heavy‑fuel options.

Weaknesses

Relatively large footprint and weight compared with high‑speed or low‑speed alternatives for the same power rating.
Standard emissions compliance may not meet Tier III without additional after‑treatment packages.
Maintenance intervals typical of medium‑speed diesel engines (oil changes, injector service) add operational cost.
Four‑pole design limits operating speed to 1500 rpm, which can affect generator size on space‑constrained vessels.

Typical Vessels: Container shipsProduct tankersBulk carriersCruise ferriesOffshore supply vesselsNaval auxiliaries

Certifications: DNV GL Type ApprovalABS Approved Marine Generator

Decision Guide: Choose if you need a proven, medium‑speed 700 kVA generator with strong global support and robust construction for auxiliary power on mid‑size commercial vessels. Avoid if vessel space or weight is at a premium, or if you require Tier III emissions compliance without adding after‑treatment equipment.

Use Cases: Typically installed as the main auxiliary generator on cargo ships and ferries, providing shipboard electricity for hotel loads, cargo handling gear, and emergency power; also used in shore‑power conversion sets where a stable 440 V, 50 Hz supply is required.

Datasheet

HCI6 700kVA 440V 60Hz unverified

· high‑speed diesel generator set

Power (kVA)

700

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and high power density – fits tight engine‑room spaces
Cummins global support network and widely available spare parts
Integrated digital controller with remote monitoring capability
Meets modern emission standards (EPA Tier 2/3) for low‑NOx operation
Proven reliability on a wide range of commercial vessels

Weaknesses

Higher fuel consumption compared with low‑speed, medium‑speed alternatives
Noise and vibration levels are higher; often requires additional soundproofing
IP23 enclosure provides limited protection against water spray and dust
Designed for 60 Hz only – not suitable for vessels requiring 50 Hz power
Higher operating speed (1800 rpm) can increase wear on bearings and couplings

Typical Vessels: Container shipGeneral cargo vesselCruise ferryOffshore supply vesselNaval auxiliary

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if: you need a compact 700 kVA generator for a 60 Hz vessel, value Cummins service support, and operate in environments where IP23 protection is sufficient. Avoid if: the installation requires 50 Hz power, higher efficiency low‑speed engines, or a more robust enclosure (e.g., IP55) for harsh marine conditions.

Use Cases: Typically installed as the main propulsion auxiliary generator on medium‑size cargo and passenger vessels, or as an emergency/auxiliary power source on offshore platforms where space is at a premium and rapid start‑up is required.

Datasheet

HCI6 700kVA 690V 50Hz unverified

· High-capacity induction generator

Power (kVA)

700

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

700 kVA output in a relatively compact footprint for its class
Class H insulation permits operation at elevated temperatures, enhancing reliability
IP23 enclosure protects against splashing water and limited dust ingress suitable for marine environments
Four‑pole design ensures stable frequency and smooth power delivery
Supported by Cummins Stamford’s global service network and proven marine track record

Weaknesses

IP23 rating offers less protection than higher IP enclosures (e.g., IP55), limiting use in harsh spray zones
Fixed 690 V, 50 Hz output may not match vessels requiring 60 Hz or lower voltage systems without transformers
Size and weight can be substantial, impacting installation space on smaller ships
Standard model lacks built‑in emission after‑treatment; additional equipment may be needed for strict NOx limits
Requires regular maintenance of cooling and ventilation to sustain Class H temperature ratings

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 700 kVA auxiliary power source at 690 V/50 Hz, value Cummins service support, and have sufficient installation space. Avoid if the vessel operates on 60 Hz systems, requires higher IP protection for exposed locations, or must meet the latest Tier III emission standards without additional after‑treatment.

Use Cases: Provides main auxiliary power for hotel services, cargo handling equipment, and emergency generation on large merchant vessels; commonly installed as a primary generator set in the engine room of tankers, container ships, and cruise ships.

Datasheet

HCI6 700kVA 690V 60Hz unverified

· high‑speed diesel generator set

Power (kVA)

700

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 700 kVA in a relatively small footprint compared with medium‑speed units.
Integrated electronic governor and protection panel simplifies installation and commissioning.
Proven reliability of the Cummins HCI series with robust Class H insulation for long service life.
Standard 690 V output matches most marine distribution systems, reducing need for step‑up transformers.
Modular construction allows quick on‑site maintenance and parts replacement.

Weaknesses

Higher operating speed results in greater fuel consumption and noise compared with medium‑speed generators of similar rating.
IP23 enclosure provides limited protection against water ingress; additional shielding is required for harsh wet environments.
Limited overload capability beyond the rated 700 kVA – not suited for vessels that need frequent high‑load excursions.
Weight and mounting requirements can be demanding on smaller hulls or retrofits.

Typical Vessels: Offshore Supply VesselPlatform Supply VesselTugboatFerryNaval auxiliary ship

Decision Guide: Choose if: you need a compact, high‑power generator that matches the standard 690 V marine bus and value integrated control electronics. Avoid if: low noise, ultra‑low fuel consumption, or operation in environments requiring higher ingress protection (IP≥44) are top priorities.

Use Cases: The HCI6 is commonly installed as a main propulsion auxiliary generator on OSVs and PSVs, providing reliable shipboard power for cargo handling equipment, hotel services, and emergency backup. It also serves as a secondary generator on larger container or bulk carriers where space constraints favor high‑speed units.

Datasheet

HCI6 800kVA 400V 50Hz unverified

· medium-speed diesel generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) in a compact footprint suitable for medium‑size vessels
Proven Cummins/Stamford reliability with extensive global service network
Insulation class H allows operation at elevated temperatures
Four‑pole design provides stable frequency and good load sharing
Standard 400 V, 50 Hz output matches most shipboard electrical systems

Weaknesses

IP23 enclosure offers limited protection against water ingress; not ideal for harsh weather‑exposed locations
Fuel consumption higher than low‑speed (slow‑running) generators of comparable rating
Noise and vibration levels are moderate, may require additional mitigation on passenger vessels
Fixed voltage/frequency limits flexibility for vessels that need 60 Hz or variable voltage configurations
Weight and mounting requirements can be significant for small craft

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Certifications: IMO Type Approval

Decision Guide: Choose if you need a robust 800 kVA auxiliary power source on a medium‑size ship, value Cummins worldwide support, and have space for an IP23‑rated set. Avoid if the installation demands higher ingress protection (e.g., IP66), ultra‑low fuel consumption, or operation at 60 Hz.

Use Cases: Typically installed as main auxiliary power for hotel loads, cargo handling equipment, and emergency generation on commercial cargo vessels and ferries where space is limited but high reliability is required.

Datasheet

HCI6 800kVA 400V 60Hz unverified

· high-speed diesel generator set

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – compact footprint for 800 kVA output
Fast start‑up time (typically <5 seconds) for rapid availability of ship service power
Integrated Cummins PowerCommand control system with remote monitoring capabilities
Proven reliability on a wide range of commercial vessels
Standard marine enclosure (IP23) suitable for engine‑room environments

Weaknesses

Higher specific fuel consumption compared with low‑speed generators of similar rating
Increased noise and vibration levels typical of high‑speed diesel sets
Requires more frequent maintenance intervals (oil, filters, valve adjustments)
Limited to 400 V output; additional step‑up transformers needed for higher voltage distribution
Cooling water flow must be carefully managed in confined engine rooms

Typical Vessels: Offshore supply vesselFerryCruise ship (auxiliary power)Container ship (hotel load generator)Tanker (auxiliary power)

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for vessels with limited engine‑room space and can accommodate higher fuel use and maintenance. Avoid if fuel efficiency, low noise/vibration, or higher voltage output are primary concerns.

Use Cases: Commonly installed as the main ship service generator supplying hotel loads, cargo handling equipment, navigation systems, and emergency power on medium‑size commercial ships; also used as a standby unit for critical offshore platforms.

Datasheet

HCI6 800kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) in a compact footprint suitable for large auxiliary power plants
Class H insulation allows reliable operation at elevated temperatures common on board
Proven Cummins/Stamford service network and spare‑parts availability worldwide
Four‑pole design provides stable 50 Hz frequency with low vibration
IP23 enclosure offers protection against splashing water while allowing easy access for maintenance

Weaknesses

Enclosure is only IP23, not fully dust‑tight; may require additional shielding in very harsh environments
Fixed 440 V output limits use on vessels that standardise on 660 V or 415 V systems without transformer conversion
Weight and size are typical for an 800 kVA unit, which can be a constraint in space‑limited engine rooms
Designed for 50 Hz; not directly compatible with 60 Hz fleets without rewinding or frequency conversion

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D-2DNV

Decision Guide: Choose if you need a reliable 800 kVA auxiliary generator for 50 Hz, 440 V systems on large commercial vessels and value Cummins global support. Avoid if your vessel operates on 60 Hz, requires higher voltage output, or demands a fully sealed (IP66+) enclosure for extreme dust/sea‑water exposure.

Use Cases: Typically installed as the main auxiliary generator in the engine room of tankers, container ships and cruise vessels to supply hotel loads, cargo refrigeration, and emergency power. Also used on offshore support vessels where high‑temperature tolerance and robust serviceability are critical.

Datasheet

HCI6 800kVA 440V 60Hz unverified

· diesel-driven alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) permits operation at elevated ambient temperatures without derating.
Four‑pole design provides stable frequency and lower vibration compared with two‑pole units of similar rating.
Cummins global service network ensures parts availability and technical support worldwide.
Compact footprint for an 800 kVA set, suitable for medium‑size auxiliary spaces on vessels.
Proven Stamford series reputation for durability in harsh marine environments.

Weaknesses

IP23 enclosure offers only limited protection against water spray; not suitable for heavily exposed deck locations without additional shielding.
Diesel engine fuel consumption is higher at part load compared with newer low‑speed or hybrid alternatives.
Noise and vibration levels are typical of high‑speed diesel generators, requiring acoustic treatment in passenger areas.
Maintenance intervals (oil changes, filter replacements) are more frequent than for low‑speed marine engines.
Physical size may still be restrictive on smaller vessels that require tighter space allocations.

Typical Vessels: Container shipCruise linerOffshore supply vesselRo‑Ro ferryNaval auxiliary

Decision Guide: Choose if you need a reliable 800 kVA auxiliary power source on vessels that already use Cummins/Stamford equipment, have space for an IP23‑rated set, and value worldwide service support. Avoid if the installation requires higher ingress protection (e.g., IP55), ultra‑low emissions zones, or if acoustic noise must be minimized without additional mitigation.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, emergency power, and dynamic positioning systems on medium‑to‑large commercial vessels. Also used in shore‑based marine workshops where robust, high‑temperature capable generation is required.

Datasheet

HCI6 800kVA 690V 50Hz unverified

· brushless synchronous generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) in a relatively compact footprint
Class H insulation allows operation at elevated temperatures
Proven Cummins/Stamford reliability and global support network
Four‑pole design provides stable 50 Hz frequency under varying loads
IP23 enclosure suitable for typical engine‑room environments

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for harsh wet locations
Designed for 50 Hz only, limiting use on vessels requiring 60 Hz systems
Requires dedicated cooling system and space allocation in the machinery space
Weight and installation dimensions can be substantial for smaller vessels

Typical Vessels: Container shipCruise linerOil tankerLNG carrierOffshore supply vessel

Decision Guide: Choose if you need a reliable 800 kVA, 690 V generator for 50 Hz applications on large commercial vessels and value Cummins support. Avoid if the installation requires higher ingress protection (e.g., IP55) or a 60 Hz power system.

Use Cases: Main auxiliary power generation for propulsion support, hotel load, and emergency power on large ocean‑going ships; commonly installed as part of a dual‑generator set in engine rooms.

Datasheet

HCI6 800kVA 690V 60Hz unverified

· high‑speed marine generator set

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 800 kVA in a relatively compact footprint suitable for vessels with limited engine‑room space.
Proven reliability from Cummins/Stamford heritage, with robust 4‑pole design and Class H insulation for long service life.
Integrated control and protection system that meets modern automation standards (e.g., IEC 61850 compatibility).
Meets major classification society approvals (ABS, DNV‑GL, LR) and USCG type approval for emergency power.
Standard 690 V/60 Hz output aligns with most existing shipboard electrical distribution systems.

Weaknesses

Higher specific fuel consumption at part load compared with slower‑speed gensets, reducing efficiency on vessels with low average loads.
Noise and vibration levels are greater than low‑speed alternatives; may require additional acoustic insulation.
Fixed voltage/frequency (690 V/60 Hz) limits flexibility for ships that operate on 50 Hz or variable frequency systems.
Maintenance intervals typical of high‑speed engines – more frequent oil changes, filter replacements, and wear monitoring.
Weight and mounting requirements can be substantial; not ideal for vessels with strict weight‑distribution constraints.

Typical Vessels: Crude oil tankersContainer shipsBulk carriersOffshore supply vesselsCruise liners

Certifications: ABS Type ApprovalDNV‑GL ClassificationLloyd's Register ApprovalUSCG Type Approval

Decision Guide: Choose if you need a high‑output, space‑efficient auxiliary generator for vessels already using a 690 V/60 Hz bus and require proven classification society approvals. Avoid if the vessel operates primarily at low load factors, demands lower emissions (Tier IV) or variable frequency power, or has strict weight and noise constraints.

Use Cases: Typically installed as main auxiliary power for hotel loads, cargo handling equipment, and emergency generators on large commercial vessels where a reliable, high‑capacity source is required to support propulsion auxiliaries and shore‑side power connections.

Datasheet

HCI6 900kVA 400V 50Hz unverified

· high-speed diesel generator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 900 kVA in a relatively small footprint compared with medium‑speed units.
Integrated Cummins PowerCommand control system provides automatic load sharing and remote monitoring.
Proven reliability of the Stamford HCI series with extensive service history on merchant ships.
Meets IMO Tier II emission limits without additional after‑treatment for most operating profiles.
Standard IP23 enclosure offers protection against splashing water while keeping weight low.

Weaknesses

Higher rotational speed (≈1500 rpm) results in greater noise and vibration than medium/low‑speed alternatives.
Accelerated wear on bearings and turbocharger may increase scheduled maintenance intervals.
Limited to 400 V three‑phase output; additional transformers are required for vessels using other voltage levels.
Cooling system must be carefully sized for continuous full‑load operation in hot climates.
Not ideal for ultra‑long endurance missions where low‑speed engines provide better fuel economy.

Typical Vessels: Container shipCruise linerOil tankerBulk carrierOffshore supply vessel

Certifications: ABS Type ApprovalDNV GL ClassificationIMO D‑2 (Marine Generator)

Decision Guide: Choose if you need a compact, high‑output auxiliary generator with proven service support and integrated control on vessels where space is at a premium. Avoid if low noise, ultra‑low fuel consumption for continuous operation, or compatibility with non‑400 V electrical systems are primary concerns.

Use Cases: Commonly installed as the main auxiliary power source on large merchant ships, providing hotel loads, cargo handling equipment, and emergency power; also used on offshore platforms where a high‑density generator is required for shore‑power or load‑following duties.

Datasheet

HCI6 900kVA 400V 60Hz unverified

· brushless high-speed generator

Power (kVA)

900

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) and low specific fuel consumption for its size class
Compact footprint with integrated control panel simplifies installation
Proven reliability with a long service history in merchant fleets
Standard marine interface (400 V, 60 Hz, 4‑pole) matches most ship electrical systems
ABS and DNV approvals provide recognized classification compliance

Weaknesses

IP23 enclosure limits use to protected engine rooms; not suitable for exposed deck mounting
Fixed 400 V/60 Hz output may require step‑down or conversion on vessels using other voltages
Weight and size are larger than newer low‑speed, high‑efficiency alternatives
Single‑unit design offers limited redundancy without an additional generator set

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: ABSDNV

Decision Guide: Choose if: you need a proven, high‑efficiency auxiliary generator for standard 400 V/60 Hz ship systems and have space in a protected engine room. Avoid if: the installation requires weather‑proof (IP≥44) equipment, higher voltage flexibility, or the lightest possible weight.

Use Cases: The HCI6 is typically installed as an auxiliary generator to supply hotel load, cargo handling equipment, and emergency power on medium‑to‑large merchant vessels. It is also used in dual‑generator configurations for redundancy on cruise ships and offshore support vessels.

Datasheet

HCI6 900kVA 440V 50Hz unverified

· high-speed diesel generator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 900 kVA in a relatively small footprint compared with low‑speed units
Robust Cummins/Stamford service network worldwide, simplifying spare‑parts logistics and maintenance
IP23 enclosure provides protection against splashing water while allowing easy access for inspection
Insulation class H gives good thermal endurance for continuous operation at rated load

Weaknesses

Higher rotational speed (typically 1800 rpm) results in increased noise and vibration versus low‑speed generators
Shorter overhaul intervals; high‑speed engines generally require more frequent maintenance
Limited overload capability – not suited for short‑term peak loads beyond the rated 900 kVA
May not meet the latest Tier III/IV emission standards without additional after‑treatment

Typical Vessels: Container shipCruise linerOffshore supply vesselRo‑Ro ferryLarge yacht

Decision Guide: Choose if you need a compact, high‑power auxiliary generator and already rely on Cummins service support; ideal for vessels operating in 50 Hz regions that value proven reliability. Avoid if low‑speed, ultra‑quiet operation or the newest emission limits are mandatory, as this high‑speed unit may require extra silencing or after‑treatment.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads and emergency power on medium‑to‑large commercial ships, especially where space is at a premium and a proven Cummins service network is desired.

Datasheet

HCI6 900kVA 440V 60Hz unverified

· medium-speed diesel generator

Power (kVA)

900

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 900 kVA in a compact IP23 enclosure suitable for limited engine‑room space
Class H insulation allows operation at elevated temperatures with good thermal margin
Four‑pole design provides stable voltage and frequency under varying loads
Cummins service network offers worldwide parts support and proven field reliability
Meets modern emission standards (EPA Tier 2/IMO Phase II) for reduced exhaust pollutants

Weaknesses

IP23 enclosure is only splash‑proof; not ideal for vessels operating in heavy spray or dust environments
Designed for 60 Hz operation only, limiting use on ships that require 50 Hz power systems
Medium‑speed engines typically have higher fuel consumption than low‑speed alternatives of similar rating
Regular maintenance intervals required to sustain performance and emissions compliance
Initial capital cost can be higher than comparable non‑Cummins units

Typical Vessels: Product TankerContainer Ship (up to ~5,000 TEU)Bulk CarrierOffshore Supply VesselCruise Ship (hotel load auxiliary)

Certifications: IMO D-2

Decision Guide: Choose if you need a proven 900 kVA auxiliary generator with strong global support, operate on a US‑flag or IMO‑compliant vessel, and the installation space is limited. Avoid if your vessel requires higher ingress protection (e.g., IP55), operates primarily at 50 Hz, or you are seeking the lowest possible fuel consumption for the same power rating.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on medium‑size commercial ships. Also used on offshore platforms where reliable, quick‑starting diesel generation is required.

Datasheet

HCI6 900kVA 690V 50Hz unverified

· Medium-speed diesel generator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 900 kVA in a compact footprint for its class
Proven Cummins reliability and extensive service network worldwide
Class H insulation allows operation in hot engine rooms without derating
Integrated control system with remote monitoring capability
IP23 enclosure provides protection against splashing water and dust on deck

Weaknesses

Physical size and weight are larger than low‑speed alternatives, requiring substantial installation space
Standard diesel exhaust emissions may not meet Tier III requirements without after‑treatment
Noise level is moderate; additional acoustic insulation often required for passenger vessels
Requires regular oil and filter changes typical of medium‑speed engines

Typical Vessels: Cruise shipsContainer vessels (large feeders)Offshore supply & support vesselsLNG carriers (auxiliary power)Ro‑Ro ferries

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable, high‑output auxiliary generator for large commercial or offshore vessels where space is limited and Class H insulation is advantageous. Avoid if the vessel operates in emission‑strict zones requiring Tier III compliance without additional after‑treatment, or if weight and noise must be minimized.

Use Cases: The HCI6 is typically installed as an auxiliary generator on large passenger ships and cargo carriers to supply hotel loads, emergency power, and propulsion support. It is also used on offshore platforms where a robust, temperature‑tolerant power source is required for continuous operation in harsh marine environments.

Datasheet

HCI6 900kVA 690V 60Hz unverified

· high‑speed diesel generator

Power (kVA)

900

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – compact size for 900 kVA output
Integrated control and monitoring system simplifies operation
Proven Cummins reliability with worldwide service network
Optional sound‑attenuation enclosure available
Meets modern emission standards (Tier 3/EU Stage III) in most configurations

Weaknesses

Higher fuel consumption than medium/low‑speed generators of similar rating
Noise level higher without additional acoustic treatment
IP23 enclosure offers limited protection against water spray
Fixed 690 V output may require step‑up transformers for vessels using higher voltages
Maintenance intervals are shorter than low‑speed alternatives

Typical Vessels: Container shipCruise linerOffshore supply vesselFerryNaval auxiliary

Certifications: IMO D-2

Decision Guide: Choose if: you need a compact, high‑output generator for a 690 V system and value Cummins global support. Avoid if: fuel efficiency or ultra‑low noise is the primary concern, or the vessel operates on a higher voltage bus without willing to add transformers.

Use Cases: Commonly installed as main auxiliary power source for hotel loads, emergency generators on cruise ships, and bulk power supply on offshore supply vessels where space is at a premium.

Datasheet

HCI6 1000kVA 400V 50Hz unverified

· brushless marine alternator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MVA) in a compact footprint for auxiliary power needs
Brushless design reduces maintenance and improves reliability
Insulation class H allows operation at elevated temperatures
IP23 enclosure provides splash protection suitable for deck‑mounted installations
Four‑pole construction delivers stable 50 Hz output

Weaknesses

IP23 rating offers only limited dust protection; not suitable for harsh, dusty environments
Single‑frequency (50 Hz) design limits use on vessels requiring dual‑frequency capability
Requires an external exciter and cooling system, adding to installation complexity
Large physical size may demand dedicated machinery space

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10 000 TEU)Cruise linerOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a reliable 1 MVA, 400 V, 50 Hz generator for large commercial vessels and have space for an IP23‑rated unit with external cooling. Avoid if the vessel operates in dusty conditions, requires higher ingress protection (e.g., IP55), or needs dual‑frequency capability.

Use Cases: Typically installed as part of the main auxiliary power plant on large tankers, container ships, and cruise vessels to supply ship service loads, emergency power, and shore‑power conversion. Also used in offshore platforms where high‑capacity, low‑maintenance generation is required.

Datasheet

HCI6 1000kVA 400V 60Hz unverified

· diesel marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) suitable for large ship hotel loads
Class H insulation allows operation at elevated temperatures
Four‑pole design provides stable frequency and lower vibration
IP23 enclosure offers splash protection while keeping size manageable
Stamford alternator reputation for reliability combined with Cummins engine support

Weaknesses

Enclosure IP23 is not dust‑tight, requiring careful placement in harsh environments
Designed for 60 Hz only – unsuitable for vessels standardized on 50 Hz
Physical footprint and weight are substantial, limiting installation space
Maintenance intervals typical of large diesel generators (oil changes, brush inspections)
Requires a dedicated 400 V three‑phase supply infrastructure

Typical Vessels: Container shipCruise linerOil tankerLNG carrierOffshore supply vessel

Decision Guide: Choose if you need a proven 1000 kVA diesel generator for 60 Hz, high‑temperature operation and can accommodate its size and IP23 rating. Avoid if the vessel operates on 50 Hz, has severe dust exposure, or space constraints preclude a large engine‑alternator set.

Use Cases: Commonly installed as primary or emergency hotel power on large commercial vessels, providing continuous electricity for propulsion auxiliaries, cargo handling equipment, and crew accommodations. Also used in shore‑power conversion packages where 400 V 60 Hz supply is required.

Datasheet

HCI6 1000kVA 440V 50Hz unverified

· brushless marine alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) in a single unit reduces the number of generators needed
Brushless design provides low maintenance and high reliability
Integrated Cummins Power Generation Control System simplifies monitoring and load sharing
Low vibration and noise levels improve crew comfort
Modular construction eases installation and future upgrades

Weaknesses

Large physical size and weight may limit placement on space‑constrained vessels
IP23 enclosure offers only limited protection; additional shielding is required in harsh marine environments
Fixed 50 Hz output – not suitable for ships that require dual‑frequency or 60 Hz power
Requires a dedicated cooling water system, adding to installation complexity
Single large unit reduces redundancy compared with multiple smaller generators

Typical Vessels: Container ShipBulk CarrierTankerCruise ShipOffshore Supply Vessel

Decision Guide: Choose the HCI6 when a vessel needs a single high‑capacity, reliable generator for 50 Hz hotel and auxiliary loads and has sufficient space for its size. Avoid it on ships that require dual‑frequency capability, have strict weight/space constraints, or operate in environments where higher IP protection is mandatory without extra shielding.

Use Cases: The HCI6 is commonly installed as the main auxiliary generator on large commercial vessels to supply hotel services, navigation equipment, and emergency power. It is also used on cruise ships and offshore support vessels where a high, continuous power output is required for onboard amenities and cargo handling systems.

Datasheet

HCI6 1000kVA 440V 60Hz unverified

· brushless marine alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1000 kVA in a compact 4‑pole design
Brushless construction reduces maintenance and improves reliability
Class H insulation allows operation at elevated temperatures
IP23 enclosure provides protection against splashing water while allowing easy access for service
Proven track record on major commercial vessels with robust overload capability

Weaknesses

Requires a dedicated cooling‑water system; performance drops if flow is inadequate
Limited to 60 Hz operation, unsuitable for regions standardising on 50 Hz without frequency conversion
Relatively high initial capital cost compared with lower‑rated units
Large physical size and weight may be restrictive in space‑constrained installations
Needs integration with a compatible engine control system for optimal performance

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: ABSDNV‑GL

Decision Guide: Choose the HCI6 when you need a reliable, high‑output auxiliary generator on a large vessel that operates on a 60 Hz power system and can accommodate its cooling‑water requirements. Avoid it for vessels limited to 50 Hz grids, where space or weight constraints are critical, or when budget constraints favour lower‑rated alternators.

Use Cases: The HCI6 is typically installed as the main auxiliary generator on large merchant ships, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. It is also used in dual‑generator configurations to support propulsion auxiliaries on cruise ships and offshore vessels.

Datasheet

HCI6 1000kVA 690V 50Hz unverified

· Stamford high-speed diesel generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MVA) in a relatively compact footprint compared to low‑speed gensets
Class H insulation allows reliable operation at elevated temperatures typical on ships
Integrated Cummins control system with built-in protection and monitoring functions
Proven Cummins/Stamford reliability and worldwide service network
IP23 enclosure protects against splashing water, suitable for most engine‑room environments

Weaknesses

IP23 rating does not protect against dust or heavy spray; unsuitable for harsh offshore exposure without additional shielding
Higher fuel consumption at full load than newer low‑speed or hybrid generator sets
Single‑unit design offers limited redundancy unless paired with another set
Weight and dimensions are substantial, requiring dedicated space in the engine room

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselNaval auxiliary

Decision Guide: Choose if you need a high‑power, proven marine generator with strong after‑sales support and can accommodate its size and IP23 protection level. Avoid if the installation requires higher ingress protection (e.g., IP55) or ultra‑low fuel consumption/emissions that newer low‑speed or hybrid gensets provide.

Use Cases: Commonly installed as the main auxiliary generator on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency power; also used on offshore support ships where a robust, high‑output source is required.

Datasheet

HCI6 1000kVA 690V 60Hz unverified

· diesel generator set

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MW) suitable for main propulsion or hotel load on large ships
Insulation class H gives strong thermal endurance and reliability under continuous operation
Four‑pole design provides stable voltage regulation at 60 Hz
Proven Cummins/Stamford brand reputation for durability and service support
Compact footprint relative to its rating, easing installation in engine rooms

Weaknesses

IP23 enclosure only protects against splashing; not suitable for harsh external or wet‑deck locations without additional shielding
Fixed 60 Hz frequency limits use on vessels operating under 50 Hz standards (e.g., many European flags)
690 V output may require step‑down transformers for equipment that expects lower voltages
No built‑in redundancy; a single unit failure impacts full power availability unless paired with another set

Typical Vessels: Crude oil tankerLNG carrierContainer ship (large class)Offshore supply vesselCruise liner (main or auxiliary generator)

Decision Guide: Choose if: you need a reliable 1 MW, 690 V/60 Hz diesel generator for a large vessel and can accommodate an IP23 indoor installation. Avoid if: the ship requires 50 Hz power, higher enclosure protection (IP44+), or expects integrated redundancy without additional units.

Use Cases: Typically installed as a main‑ship generator on large tankers, offshore support vessels, or cruise ships where high continuous power is required for propulsion auxiliaries and hotel services. Often paired with an automatic voltage regulator and remote monitoring system for round‑the‑clock operation.

Datasheet

HCI6 1250kVA 400V 50Hz unverified

· high‑speed marine alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 1250 kVA in a relatively small footprint compared with low‑speed gensets.
Proven reliability of the Cummins/Stamford HCI series with extensive service network worldwide.
Integrated control and monitoring system simplifies operation and fault diagnostics.
Fast start‑up time, suitable for both main auxiliary and emergency power applications.
Standard 4‑pole design provides stable voltage and frequency under varying loads.

Weaknesses

Higher specific fuel consumption than low‑speed (1500 rpm) generators of comparable rating.
Noise level can be higher; may require additional acoustic insulation on passenger vessels.
Limited overload capability – typically 110 % for 30 min, less than some competing models.
Maintenance intervals are shorter due to high‑speed operation.
Requires a dedicated cooling system (air‑forced) that adds to installation complexity.

Typical Vessels: Container shipsBulk carriersCruise linersFerriesOffshore supply vessels

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if: you need a compact, high‑output auxiliary generator with fast start‑up and have space constraints; you value a global service network and proven reliability. Avoid if: fuel efficiency is the primary driver, noise restrictions are stringent, or you prefer low‑speed generators for very long continuous runs.

Use Cases: The HCI6 is typically installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and navigation systems on large commercial vessels; it also serves as an emergency power source meeting IMO regulations for redundancy.

Datasheet

HCI6 1250kVA 400V 60Hz unverified

· high-speed diesel generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1250 kVA in a relatively compact footprint
Modular construction simplifies installation and routine maintenance
Robust IP23 enclosure provides protection against dust and water spray typical of shipboard environments
Class‑H insulation permits higher operating temperatures, enhancing reliability under heavy loads
Integrated with Cummins PowerCommand remote monitoring for real‑time performance tracking

Weaknesses

High‑speed engine has higher specific fuel consumption compared to medium‑speed alternatives
Noise and vibration levels are greater than low‑speed generators, requiring additional mitigation on noise‑sensitive vessels
Limited to 60 Hz operation; not suitable for vessels standardized on 50 Hz systems without a frequency converter
IP23 rating does not protect against immersion, so extra sealing may be needed in harsh marine spray zones
Emissions compliance is typically Tier 2/EPA‑IV; newer Tier 4/Stage V requirements may need additional after‑treatment

Typical Vessels: Container shipBulk carrierTanker (U.S. flagged)Offshore supply vesselCruise liner

Decision Guide: Choose if you need a high‑output, compact auxiliary generator for a 60 Hz U.S.‑flagged or similar vessel and value Cummins global support and remote monitoring. Avoid if the ship operates on a 50 Hz power system, requires ultra‑low emissions Tier 4/Stage V compliance, or has strict noise‑abatement constraints.

Use Cases: The HCI6 is typically installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on large commercial vessels. It can also serve as a shore‑power generation unit when docked, providing reliable electricity for vessel systems while at berth.

Datasheet

HCI6 1250kVA 440V 50Hz unverified

· high-speed diesel-driven alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1250 kVA in a relatively compact footprint compared with low‑speed gensets
Proven Cummins/Stamford reliability and worldwide service network
Four‑pole design provides stable 50 Hz output under varying load conditions
Modular construction allows quick on‑board replacement and routine maintenance
Integrated control panel compatible with common ship automation systems

Weaknesses

IP23 enclosure offers limited protection against water spray; additional shielding needed in harsh marine environments
Higher fuel consumption than newer low‑speed, Tier III compliant generators of similar rating
Noise and vibration levels are higher than insulated low‑speed alternatives
Requires regular oil changes and scheduled maintenance typical of high‑speed diesel engines
Physical size may still be restrictive on smaller vessels with limited engine‑room space

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a robust, high‑power auxiliary source with proven Cummins support and can accommodate an IP23 enclosure or add extra protection. Avoid if the installation demands higher ingress protection (e.g., IP66), Tier III emissions compliance, ultra‑low noise, or if space is extremely limited.

Use Cases: Commonly installed as a main auxiliary generator for hotel load on cruise ships, emergency power for cargo handling equipment on bulk carriers and tankers, and as part of the shore‑power generation suite on offshore support vessels.

Datasheet

HCI6 1250kVA 440V 60Hz unverified

· brushless synchronous alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1250 kVA) suitable for main hotel load or propulsion auxiliaries
Brushless design reduces routine maintenance and improves reliability
Class H insulation allows operation at elevated temperatures without derating
IP23 enclosure provides adequate protection against dust and spray in typical engine‑room environments
Widely recognized Cummins/Stamford brand reputation for durability and service support

Weaknesses

Enclosure rating IP23 does not protect against heavy water ingress; unsuitable for exposed deck installations
Physical size and weight require substantial engine‑room space and robust mounting structures
Single frequency (60 Hz) limits use on vessels that operate on 50 Hz power systems without a converter
Fixed voltage of 440 V may necessitate additional transformers for vessels with different distribution voltages
Higher initial capital cost compared with smaller, lower‑rated generators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: ABSDNV-GL

Decision Guide: Choose if you need a proven, high‑capacity auxiliary generator with low maintenance brushless technology and can accommodate its size in the engine room. Avoid if space is limited, you require higher ingress protection (e.g., IP55) or dual‑frequency capability.

Use Cases: Commonly installed as a main hotel‑load generator on large commercial vessels, providing continuous power for cargo handling equipment, HVAC, navigation systems, and emergency backup; also used to supply propulsion auxiliaries such as pumps and thrusters on offshore platforms.

Datasheet

HCI6 1250kVA 690V 50Hz unverified

· medium‑speed diesel‑driven alternator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for large vessels requiring >1 MW of auxiliary power
Robust four‑pole construction provides stable voltage and frequency under varying loads
Proven Cummins/Stamford reliability with extensive service network worldwide
IP23 enclosure offers protection against splashing water while allowing easy access for maintenance

Weaknesses

Relatively large footprint and weight compared with newer compact generator sets
Standard emission rating may not meet the strictest Tier III or IMO‑2020 requirements without after‑treatment
Requires regular oil changes and scheduled inspections typical of medium‑speed diesel engines

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D-2 Type ApprovalABS ClassificationDNV GL Approval

Decision Guide: Choose if you need a proven, high‑output auxiliary generator for large commercial vessels and have space for a medium‑speed unit. Avoid if vessel size limits installation space or if the latest low‑emission standards are mandatory without additional after‑treatment equipment.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling gear, navigation systems, and emergency generators on tankers, container ships, bulk carriers, cruise ships and offshore support vessels.

Datasheet

HCI6 1250kVA 690V 60Hz unverified

· diesel-driven high‑speed alternator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1250 kVA in a compact footprint compared with lower‑speed units
Insulation class H allows operation up to 180 °C, enhancing thermal robustness
Four‑pole design provides stable 60 Hz output at 1500 rpm, matching common marine standards
Proven Cummins/Stamford reliability and widespread service network
Integrated control system (Power Management System) simplifies monitoring and load sharing

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh external environments
High‑speed operation can result in higher specific fuel consumption versus medium‑speed generators of similar rating
Physical size and weight may require dedicated engine‑room space and robust mounting
Requires regular brush maintenance if a brushed exciter is fitted (common on this series)
Limited to 690 V output; additional transformers needed for vessels standardising on higher voltages

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vessel

Certifications: ABSDNV‑GLLloyd's Register

Decision Guide: Choose if you need a high‑power, compact auxiliary generator with proven Cummins service support and can accommodate an IP23 engine‑room installation. Avoid if the vessel requires higher ingress protection (e.g., IP55), ultra‑low fuel consumption, or has severe space constraints that favour smaller low‑speed units.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on large commercial vessels; also used in cruise ships for high‑capacity hotel electricity and in offshore support vessels where rapid start‑up and load flexibility are critical.

Datasheet

PI7 1250kVA 400V 50Hz unverified

· brushless marine alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1.25 MVA) in a compact footprint suitable for medium‑size vessels
Brush‑less construction reduces maintenance intervals and downtime
Class H insulation allows operation at elevated temperatures typical of engine rooms
Integrated control panel simplifies installation and monitoring
Proven Cummins/Stamford reliability with extensive service network

Weaknesses

IP23 enclosure provides only limited protection against water ingress; not ideal for harsh, spray‑heavy environments
High‑speed design can be less efficient at low load factors compared with low‑speed generators
Requires dedicated cooling system and ventilation space in the engine room
May need additional sound attenuation measures for noise‑sensitive vessels

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselGeneral cargo vessel

Certifications: IMO Type ApprovalDNV Classification

Decision Guide: Choose if you need a medium‑size, high‑reliability auxiliary generator with low maintenance and integrated controls for vessels that can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (e.g., IP55 or better), ultra‑low fuel consumption at light loads, or very tight space constraints.

Use Cases: Typically installed as a main auxiliary generator to supply hotel load, navigation equipment and cargo handling systems; also used as an emergency generator on vessels where redundancy and quick start-up are critical.

Datasheet

PI7 1250kVA 400V 60Hz unverified

· high-speed diesel generator set

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1250 kVA in a relatively compact footprint compared with slower‑speed units.
Robust enclosure (IP23) suitable for typical marine engine rooms.
Standard insulation class H provides good thermal tolerance and reliability.
Widely supported service network from Cummins, simplifying spare parts logistics.

Weaknesses

Higher operating speed can lead to increased wear on bearings and may require more frequent maintenance than low‑speed generators.
Noise level is higher than that of slower‑speed, insulated units; additional soundproofing may be needed in noise‑sensitive vessels.
Limited redundancy if installed as a single source – many operators pair it with an identical set for critical loads.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vessel

Decision Guide: Choose if you need a compact, high‑output generator with strong Cummins support and can accommodate the higher maintenance interval of a high‑speed unit. Avoid if low noise or ultra‑low maintenance is paramount, or if your vessel requires proven IMO Type Approval for this exact model.

Use Cases: Commonly installed as the main propulsion auxiliary generator on medium‑size cargo ships and offshore supply vessels where space is at a premium and a reliable, high‑output power source is required for hotel loads and emergency systems.

Datasheet

PI7 1250kVA 440V 50Hz unverified

· diesel-driven alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1250 kVA in a relatively compact footprint
Robust 4‑pole design with IP23 enclosure suitable for harsh marine environments
Integrated Cummins Power Generation Control System simplifies monitoring and load sharing
Proven reliability on cruise ships, container vessels and offshore platforms
Wide global service network from Cummins

Weaknesses

Higher fuel consumption compared with newer low‑speed or hybrid gensets
Standard emission level; Tier III compliance requires additional after‑treatment packages
Noise and vibration levels are higher than some low‑speed alternatives
Fixed speed (1800 rpm) limits flexibility for variable‑speed propulsion integration

Typical Vessels: Cruise shipContainer vesselBulk carrierOffshore supply vesselFPSO

Certifications: ABSDNV GL

Decision Guide: Choose if you need a proven, high‑output auxiliary generator with strong after‑sales support and can accommodate standard emission limits. Avoid if the project demands ultra‑low emissions (Tier III without retrofit) or a variable‑speed hybrid power system.

Use Cases: The PI7 is commonly installed as a main auxiliary generator on large commercial ships, providing shipboard electricity for hotel loads, cargo handling equipment and emergency power. It is also used on offshore platforms where reliable, high‑capacity power is required around the clock.

Datasheet

PI7 1250kVA 440V 60Hz unverified

· Stamford PI7 high‑speed marine alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1250 kVA in a relatively compact footprint compared with older low‑speed units.
Integrated digital controller provides automatic voltage regulation, fault diagnostics and remote monitoring.
Proven Cummins/Stamford reliability record on a wide range of merchant vessels.
Standard 4‑pole design runs at 1500 rpm for 60 Hz systems, matching most medium‑speed diesel engines.
Insulation class H allows operation in high‑temperature engine rooms.

Weaknesses

IP23 enclosure offers only drip‑proof protection; not suitable for areas with heavy spray or saltwater immersion.
Designed exclusively for 60 Hz – a separate model is required for 50 Hz vessels.
Requires adequate ventilation and cooling airflow; installation space must accommodate large inlet/outlet ducts.
If the unit uses brushed excitation, periodic brush inspection/replacement adds maintenance overhead.
Initial capital cost is higher than comparable low‑speed, lower‑output alternators.

Typical Vessels: Cruise shipContainer vesselBulk carrierOffshore supply vesselFerries

Decision Guide: Choose if you need a high‑output (≥1 MW) generator for a 60 Hz merchant or offshore vessel and have space/ventilation to accommodate a compact, high‑speed alternator. Avoid if the installation requires a higher ingress protection rating (e.g., IP55), must operate on 50 Hz, or you prefer a brushless design with minimal routine maintenance.

Use Cases: Typically installed as the main generator set on medium‑to‑large commercial ships to supply propulsion and hotel loads, or as an emergency/auxiliary power source where rapid response and high output are critical. The PI7 series is also used in offshore platforms that need reliable, high‑capacity electricity generation in confined engine‑room spaces.

Datasheet

PI7 1250kVA 690V 50Hz unverified

· medium-speed diesel generator set

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1.25 MVA) in a relatively compact footprint for medium‑speed gensets
Robust IP23 enclosure suitable for deck or engine‑room installation with good protection against dust and splashing water
Insulation class H permits operation at elevated ambient temperatures common on tropical vessels
Cummins Stamford global service network provides rapid spare‑parts availability and proven field support
Four‑pole design ensures stable 50 Hz frequency under varying load conditions

Weaknesses

Significant weight compared with low‑speed, high‑efficiency alternatives – may impact vessel weight budgeting
Requires dedicated cooling‑water system and exhaust routing, adding installation complexity
Fixed 690 V output may necessitate step‑up transformers for vessels that operate at higher bus voltages
Noise and vibration levels are higher than newer low‑speed or hybrid generator sets
Initial capital cost can be higher than comparable smaller‑rated units

Typical Vessels: Bulk CarrierContainer ShipTankerCruise ShipOffshore Supply Vessel

Decision Guide: Choose if you need a proven, high‑capacity medium‑speed generator with strong after‑sales support for large merchant vessels or offshore platforms. Avoid if vessel weight, space constraints, or ultra‑low emissions (Tier III without aftertreatment) are primary concerns.

Use Cases: Provides main auxiliary power for propulsion auxiliaries, hotel loads, and emergency generation on large commercial ships; commonly installed in engine rooms to supply 690 V bus systems and to feed step‑up transformers for higher voltage distribution.

Datasheet

PI7 1250kVA 690V 60Hz unverified

· High‑speed marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) in a compact footprint suitable for limited engine‑room space
Proven Cummins/Stamford reliability and extensive service network worldwide
Integrated control system with automatic voltage regulation and load sharing capabilities
Class H insulation allows operation at elevated temperatures typical of marine environments
Standard 690 V three‑phase output matches most shipboard distribution systems

Weaknesses

Open IP23 enclosure provides limited protection against harsh weather or salt spray; not ideal for exposed deck installations
Noise and vibration levels higher than fully enclosed generator sets, requiring additional acoustic mitigation
Requires regular maintenance of brushes and bearings typical of high‑speed alternators
Physical size and weight may be restrictive on vessels with very tight engine‑room constraints
May need supplemental emission control equipment to meet the latest Tier 3/4 standards

Typical Vessels: TankerBulk CarrierContainer ShipOffshore Supply VesselCruise Ship (hotel load)

Decision Guide: Choose if you need a high‑capacity, proven auxiliary generator for vessels with adequate engine‑room protection and can accommodate the open‑type enclosure. Avoid if the installation environment is exposed to severe weather, strict noise limits, or if you require a fully enclosed unit with higher IP rating.

Use Cases: Commonly installed as the main auxiliary power source on large merchant ships, providing electricity for cargo handling gear, hotel services, and emergency power. Also used in offshore support vessels where high output and quick start‑up are critical.

Datasheet

PI7 1500kVA 400V 50Hz unverified

· high-speed marine alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 1500 kVA in a relatively small footprint.
Insulation class H allows operation at elevated temperatures with good durability.
Four‑pole design provides stable voltage and frequency output under varying loads.
Proven reliability on a wide range of commercial vessels; extensive Cummins service network.
Integrated control panel simplifies installation and monitoring.

Weaknesses

IP23 enclosure is only splash‑proof; the unit must be installed in a protected space.
Higher specific fuel consumption at low loads compared with slower‑speed generators.
Noise level can be higher than low‑speed, insulated gensets, requiring additional acoustic treatment.
Limited overload rating (typically 110 % for 30 min) may not suit extreme peak‑load scenarios.
May require after‑treatment to meet Tier III emission limits in Emission Control Areas.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselFerry

Certifications: ABSDNV GLIMO D‑2

Decision Guide: Choose if you need a compact, high‑output generator with proven Cummins support and can provide a protected installation space. Avoid if the vessel operates primarily in emission control areas without ready after‑treatment, or if ultra‑low noise and weather‑proof enclosures are mandatory.

Use Cases: Typically installed as the main auxiliary generator for hotel power, emergency supply, and dynamic positioning loads on commercial cargo ships and cruise vessels; often paired with a diesel engine set in the ship's generator room.

Datasheet

PI7 1500kVA 400V 60Hz unverified

· brushless alternator with integrated AVR

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint for its 1.5 MW rating, saving valuable engine room space
Proven Cummins reliability and long service intervals
Integrated automatic voltage regulator reduces auxiliary wiring and simplifies installation
Class H insulation allows operation in high‑temperature environments typical of marine engines
IP23 enclosure provides protection against splashing water while allowing easy access for maintenance

Weaknesses

Maximum output limited to 1500 kVA; not suitable for vessels requiring larger auxiliary power plants
Fuel consumption at full load is higher than newer low‑speed, high‑efficiency gensets
Noise level can be significant without additional acoustic insulation
Maintenance still requires periodic brush inspection despite being a brushless design (exciter brushes)
Standard IP23 rating may need upgrading to higher protection levels for harsh offshore conditions

Typical Vessels: Container shipsBulk carriersTanker vesselsOffshore supply vesselsCruise ships (hotel load)

Certifications: DNVABS

Decision Guide: Choose if you need a reliable, space‑efficient 1.5 MW auxiliary generator with integrated control on medium‑size commercial vessels and can accommodate its fuel consumption and noise characteristics. Avoid if the vessel requires higher power output, ultra‑low emissions, or operates in environments demanding higher ingress protection than IP23.

Use Cases: The PI7 is typically installed as a main auxiliary generator supplying hotel services, cargo handling equipment, and emergency power on container ships, tankers, and offshore supply vessels. It also serves as a standby unit for cruise ship hotel loads where compactness and quick start‑up are valued.

Datasheet

PI7 1500kVA 440V 50Hz unverified

· diesel generator set

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (1500 kVA) suitable for large vessel hotel loads
Class H insulation allows operation at elevated temperatures
IP23 enclosure provides protection against dust and splashing water typical on deck installations
Four‑pole design ensures stable 50 Hz frequency under varying load conditions
Cummins/Stamford reputation for reliability and worldwide service support

Weaknesses

Large physical footprint and high weight may limit installation in space‑constrained vessels
Standard 50 Hz output only; not directly compatible with 60 Hz ship systems without conversion
Requires regular diesel fuel handling and scheduled maintenance intervals
Enclosure rating IP23 is lower than fully sealed (IP65) units, limiting use in harsh spray zones

Typical Vessels: Crude oil tankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a high‑capacity, 1500 kVA auxiliary generator for a 50 Hz vessel with ample engine room space and value the Cummins service network. Avoid if weight/space is at a premium, you require 60 Hz output, or need a fully sealed (IP65) enclosure for extreme exposure.

Use Cases: The PI7 is typically installed as a main auxiliary generator on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency power. It can also serve as a dedicated emergency generator on cruise ships where redundancy and high reliability are critical.

Datasheet

PI7 1500kVA 440V 60Hz unverified

· diesel-driven synchronous alternator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1500 kVA) suitable for large vessels
Robust Class H insulation allows operation in high‑temperature engine rooms
Proven Cummins service network worldwide, simplifying maintenance and parts supply
Designed to meet IMO D‑2 and major classification society standards (ABS, DNV GL)
Four‑pole construction provides good voltage regulation and low harmonic distortion

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for wet locations without additional shielding
Relatively large footprint and weight compared with newer compact generator technologies
Standard emission rating may not meet Tier III requirements in Emission Control Areas without after‑treatment
Single‑unit design limits redundancy unless paired with another set
Fuel consumption is higher than modern high‑efficiency, low‑speed diesel generators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D-2ABSDNV GLLloyd's Register

Decision Guide: Choose if you need a reliable, high‑power auxiliary generator for US‑flag or other 60 Hz vessels and value Cummins global support. Avoid if space is at a premium, the installation requires higher ingress protection, or the vessel must meet strict Tier III emission limits without additional after‑treatment.

Use Cases: Typically installed as main auxiliary power on large merchant ships to run hotel loads, cargo handling equipment, and emergency systems; also used on cruise ships for extensive hotel services and on offshore vessels where robust, proven power is critical.

Datasheet

PI7 1500kVA 690V 50Hz unverified

· diesel‑driven marine alternator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) in a single unit reduces the number of generators needed on large vessels
Class‑H insulation allows reliable operation at elevated temperatures typical of engine rooms
Proven Cummins/Stamford brand reputation and worldwide service network
Four‑pole design provides stable 50 Hz frequency with low harmonic distortion
IP23 enclosure offers basic protection against water spray while keeping the unit relatively lightweight

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; additional shielding may be required in harsh environments
Large physical footprint and weight compared with newer compact, electronically controlled gensets of similar rating
Typically a brushed rotor – requires periodic brush inspection/replacement
Limited emission control features relative to modern low‑NOx engines equipped with electronic fuel management
Higher initial capital cost than some competing manufacturers for the same power class

Typical Vessels: Container shipsCruise linersOffshore supply vesselsLNG carriersNaval auxiliaries

Decision Guide: Choose if you need a proven, high‑capacity 1500 kVA generator with strong global support and can accommodate the IP23 enclosure in your engine‑room layout. Avoid if the installation demands higher ingress protection (e.g., IP66), lower emissions, or a more compact, brushless solution.

Use Cases: The PI7 is commonly installed as a main auxiliary generator to supply hotel loads, propulsion auxiliaries, and emergency power on large commercial vessels where reliable, high‑power generation is critical.

Datasheet

PI7 1500kVA 690V 60Hz unverified

· Diesel-driven alternator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) in a relatively compact footprint for its class
Class‑H insulation allows reliable operation at elevated temperatures
Four‑pole design delivers stable 60 Hz frequency suitable for most ship systems
Cummins/Stamford reputation for durability and worldwide service support
IP23 enclosure provides protection against splashing water and dust in marine environments

Weaknesses

Physical size and weight can be a limitation on vessels with tight machinery spaces
Fixed 690 V/60 Hz output limits flexibility for ships requiring other voltage/frequency configurations
Standard diesel engine emissions may not meet the latest Tier‑III or IMO NOx standards without additional after‑treatment
Noise and vibration levels typical of high‑speed diesel generators may require extra acoustic insulation
Maintenance intervals are comparable to other high‑power marine gensets, requiring regular scheduled overhauls

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑capacity 1500 kVA generator for 690 V/60 Hz shipboard power and value Cummins global support. Avoid if: the vessel has strict space constraints, requires lower emissions compliance (Tier‑III/IMO NOx) without additional after‑treatment, or needs flexible voltage/frequency options.

Use Cases: Typically installed as a main auxiliary generator on large cargo vessels to supply propulsion auxiliaries and hotel loads, or as an emergency power source for critical systems on cruise ships and offshore support vessels.

Datasheet

PI7 1750kVA 400V 50Hz unverified

Power (kVA)

1750

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1750 kVA in a compact footprint suitable for engine‑room installation
Insulation class H allows operation up to 180 °C ambient, enhancing reliability in hot climates
Standard 4‑pole design provides stable frequency and low harmonic distortion
IP23 enclosure meets typical marine engine‑room protection requirements while allowing easy access for maintenance
Widely supported by Cummins service network and spare‑parts availability

Weaknesses

Only a single frequency (50 Hz) – not suitable where dual‑frequency capability is required
IP23 rating offers limited protection against water ingress; additional sealing may be needed in very wet environments
Fuel consumption rises noticeably at low load, reducing efficiency for vessels with highly variable power demand
Air‑cooled design (if applicable) can generate significant noise and requires adequate ventilation space

Typical Vessels: Cruise shipsContainer vesselsBulk carriersOffshore supply vesselsLNG/LPG carriers (hotel power)

Certifications: ABSDNV GLLR

Decision Guide: Choose if you need a robust 1750 kVA auxiliary generator with high temperature tolerance and compact size for large passenger or cargo ships operating on 50 Hz. Avoid if dual‑frequency operation, higher ingress protection (IP55+) or ultra‑low‑load efficiency are critical requirements.

Use Cases: Typically installed as the main hotel‑power generator on cruise liners, as a secondary propulsion‑auxiliary set on container and bulk carriers, and as emergency power for critical systems on offshore support vessels.

Datasheet

PI7 1750kVA 400V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

1750

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1 750 kVA in a compact footprint compared with low‑speed generators of similar rating.
Class H insulation permits operation at elevated temperatures, improving reliability in hot engine rooms.
Integrated Cummins Power Generation Control System provides automatic voltage regulation and fault diagnostics.
IP23 enclosure offers splash protection while allowing easy access for routine maintenance.
Proven Cummins/Stamford brand reputation with extensive service network worldwide.

Weaknesses

Enclosure rating IP23 is not dust‑tight; unsuitable for environments requiring higher ingress protection.
Designed only for 400 V/60 Hz systems – not directly compatible with vessels that operate on 50 Hz or other voltages.
High‑speed design results in higher fuel consumption per kW compared with low‑speed, high‑efficiency generators.
Requires regular oil and bearing maintenance typical of high‑speed alternators.
Physical size and weight may be limiting for vessels with very tight engine‑room space.

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: the vessel uses a 400 V, 60 Hz electrical system and needs a reliable, high‑power auxiliary generator with proven support; space allows for an IP23 enclosure; you value integrated control and diagnostics. Avoid if: the ship operates on 50 Hz or requires higher ingress protection (IP54+), wants maximum fuel efficiency at low load, or has severe space/weight constraints.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo‑handling equipment, and emergency power on large commercial vessels; also used in dynamic positioning setups where rapid response and high output are required.

Datasheet

PI7 1750kVA 440V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1750

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output in a relatively compact footprint for its class
Integrated Cummins engine offers good fuel efficiency and low emissions
Proven reliability on commercial vessels with extensive service network
IP23 enclosure is suitable for standard engine‑room installations
Four‑pole design provides stable frequency under varying loads

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for exposed locations
Physical size and weight may be restrictive on vessels with tight machinery spaces
Higher initial capital cost compared with smaller generator sets
Noise and vibration levels typical of high‑output diesel generators require adequate isolation
Cooling system demands can increase auxiliary power consumption

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryCruise liner (mid‑size)

Decision Guide: Choose if you need a robust, high‑capacity generator for medium to large commercial ships and have access to Cummins service support. Avoid if space is at a premium, the installation requires a higher ingress protection rating, or the vessel operates on low‑speed diesel engines where a smaller set would suffice.

Use Cases: Commonly installed as a main or auxiliary generator on vessels requiring several megawatts of hotel power, often paired with other generators for redundancy in multi‑generator configurations. Used to supply lighting, HVAC, cargo handling equipment, and propulsion auxiliaries on container ships, bulk carriers, and cruise vessels.

Datasheet

PI7 1750kVA 440V 60Hz unverified

· high-speed diesel-driven alternator

Power (kVA)

1750

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1750 kVA) suitable for heavy hotel and cargo loads
Proven Cummins/Stamford reliability with extensive service network
Modular design allows relatively quick installation and maintenance
Insulation class H tolerates high operating temperatures
IP23 open‑type enclosure simplifies cooling in well‑ventilated engine rooms

Weaknesses

Open IP23 enclosure requires adequate ventilation and may be unsuitable for harsh environments
Large physical footprint and weight demand ample machinery space
Higher fuel consumption at part load compared with newer low‑speed units
Single‑frequency (60 Hz) only; not suitable where dual 50/60 Hz capability is required
External cooling system may be needed in hot climates

Typical Vessels: Container shipCrude oil tankerBulk carrierLNG carrierCruise shipOffshore supply vessel

Certifications: ABSUSCG Type Approval

Decision Guide: Choose if: you need a high‑capacity (≥1500 kVA) 60 Hz generator for large merchant vessels, have sufficient engine‑room space and ventilation, and want the backing of Cummins' global support network. Avoid if: vessel size limits space, dual‑frequency operation is required, or an enclosed IP55/56 unit is mandated by classification societies.

Use Cases: Typically installed as the main auxiliary generator supplying hotel services, cargo handling gear, and emergency power on large ocean‑going ships; also used on offshore supply vessels to provide power for dynamic positioning and deck equipment.

Datasheet

PI7 1750kVA 690V 50Hz unverified

· high-speed marine alternator

Power (kVA)

1750

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1750 kVA in a compact footprint
Class H insulation provides good thermal endurance
Standard 690 V shipboard voltage simplifies integration with existing distribution systems
Proven Cummins/Stamford brand support and spare‑parts network
IP23 enclosure offers splash protection suitable for most engine‑room environments

Weaknesses

IP23 rating does not protect against dust ingress; unsuitable for harsh, dusty compartments
Fixed 50 Hz output – no dual‑frequency capability for vessels requiring both 50 Hz and 60 Hz power
High rotational speed can lead to higher bearing wear compared with low‑speed alternators
Requires dedicated cooling system; integration may be more complex on older ships
Limited to 4‑pole design, which may not meet specific harmonic requirements for some modern propulsion systems

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a compact, high‑output generator for 690 V ship service power and prefer Cummins support; space is limited and the engine room environment meets IP23 protection. Avoid if: dust‑tight (IP54+) enclosure is required, dual‑frequency output is needed, or a low‑speed alternator with longer bearing life is preferred.

Use Cases: Typically installed as part of a diesel‑generator set for main ship service power, emergency generators, or propulsion auxiliaries on large commercial vessels where high auxiliary power and compact size are critical.

Datasheet

PI7 1750kVA 690V 60Hz unverified

· medium-speed diesel generator set

Power (kVA)

1750

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Cummins/Stamford reliability with a long service history in marine auxiliaries
Modular construction allows quick removal and replacement of the alternator for maintenance
High thermal efficiency (≈95 %) reduces fuel consumption on continuous operation
IP23 enclosure provides protection against splashing water while allowing easy access for inspection
Insulation class H enables operation in high ambient temperature zones

Weaknesses

Large physical footprint and weight require substantial engine‑room space
Designed for 60 Hz only – not suitable for vessels standardized on 50 Hz systems
Standard configuration runs on diesel fuel only; dual‑fuel capability requires optional packages
May need additional after‑treatment (e.g., SCR) to meet the latest IMO Tier III emission limits
Initial capital cost is higher than comparable low‑speed generators of similar rating

Typical Vessels: Crude oil tankerProduct tankerContainer shipCruise linerOffshore supply vesselDynamic positioning (DP) support vessel

Certifications: ABSDNV GLLloyd's RegisterIMO D‑2

Decision Guide: Choose if you need a robust 1750 kVA, 690 V, 60 Hz auxiliary generator with proven Cummins service support and have sufficient engine‑room space. Avoid if the vessel operates on a 50 Hz power system, has strict weight/space constraints, or must meet Tier III emissions without installing additional after‑treatment.

Use Cases: Typically installed as an auxiliary generator for main‑propulsion support, hotel load supply, and emergency power on large tankers, container ships, cruise vessels, and offshore support platforms. Frequently paired with a diesel engine set to provide continuous power for cargo handling equipment, HVAC, and DP systems.

Datasheet

PI7 2000kVA 400V 50Hz unverified

· medium-speed diesel generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal efficiency (~90% at rated load) resulting in lower fuel consumption
Proven reliability with extensive service network from Cummins/Stamford
Modular design allows easy access for routine maintenance and parts replacement
Integrated control system provides automatic voltage regulation and fault diagnostics
Suitable for 400 V three‑phase shipboard distribution systems

Weaknesses

IP23 enclosure offers limited protection against water spray; requires sheltered installation
Physical size and weight are larger than newer compact low‑speed or hybrid gensets
Noise level is higher than low‑speed generators, may need additional acoustic insulation on passenger vessels
Only available in 50 Hz version, limiting use on ships requiring 60 Hz power
H‑class insulation demands careful cooling management to avoid overheating

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Certifications: ABS approvalDNV GL classification

Decision Guide: Choose if you need a proven, high‑efficiency medium‑speed generator for 400 V 50 Hz shipboard systems with strong after‑sales support and can accommodate an IP23 enclosure. Avoid if the vessel requires fully sealed (IP55+) equipment, operates on 60 Hz, has strict weight/space constraints, or demands ultra‑low noise levels.

Use Cases: Typically installed as part of the main auxiliary power plant on large merchant vessels, providing hotel load, cargo handling power and emergency generation. Also used on cruise ships for hotel services and on offshore platforms where reliable medium‑speed diesel generation is required.

Datasheet

PI7 2000kVA 400V 60Hz unverified

· diesel-driven alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density (2000 kVA) suitable for large vessel hotel loads
Proven reliability with extensive service network worldwide
Integrated control system with remote monitoring capability
Class H insulation allows operation in high ambient temperatures
IP23 enclosure provides protection against splashing water and dust

Weaknesses

Large footprint and weight require dedicated generator room
Designed for 60 Hz only – not directly compatible with 50 Hz systems without a frequency converter
Higher initial capital cost compared with smaller gensets
Noise level can be significant; may need additional acoustic insulation
Fuel consumption rises sharply at low load if not operated near design point

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: ABSDNV GL

Decision Guide: Choose if you need a robust 2 MW auxiliary power source for large vessels, require proven global support and can accommodate the generator's size and cooling requirements. Avoid if vessel space is limited, the electrical system operates on 50 Hz, or budget constraints favor smaller gensets.

Use Cases: The PI7 is commonly installed as a main hotel‑load generator on ocean‑going cargo ships, cruise vessels, and offshore support ships, providing continuous power for lighting, HVAC, navigation equipment, and serving as an emergency backup source.

Datasheet

PI7 2000kVA 440V 50Hz unverified

· diesel-driven synchronous alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2000 kVA) in a single unit reduces the number of gensets required.
Class H insulation allows operation at elevated temperatures, improving reliability in hot engine‑room environments.
Proven Cummins/Stamford brand reputation for durability and service support worldwide.
Integrated control package compatible with common marine automation systems (e.g., NMEA 2000, IEC 61850).
IP23 enclosure provides adequate protection against dust and water spray while allowing easy access for maintenance.

Weaknesses

Large physical footprint and weight may require significant space allocation in the engine room.
Enclosure IP23 is not fully sealed; unsuitable for highly corrosive or splash‑prone areas without additional protection.
Optimised for 50 Hz operation only – not directly interchangeable with 60 Hz fleets.
Fuel consumption rises sharply at low load, making it less efficient for vessels with widely varying power demand.
Requires a dedicated cooling system (air‑forced or water‑cooled) that adds to installation complexity.

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container Vessels (ULCV)Cruise ShipsOffshore Supply VesselsLNG/LPG carriers

Certifications: IMO D-2DNV GL

Decision Guide: Choose if: you need a single, high‑capacity generator (≥1500 kVA) for 50 Hz systems on large vessels and value Cummins global support. Avoid if: the installation requires IP65 protection, operation at 60 Hz, or you expect prolonged low‑load periods where fuel efficiency is critical.

Use Cases: The PI7 is commonly installed as a main auxiliary generator on diesel‑electric ships, providing hotel power for cruise liners, emergency power on tankers, and propulsion support on offshore platforms where high, reliable output is essential.

Datasheet

PI7 2000kVA 440V 60Hz unverified

· diesel generator set

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2 MW) suitable for hotel loads and DP systems
Proven reliability with Cummins/Stamford engineering heritage
Modular design allows easy installation and maintenance access
IP23 enclosure protects against splashing in harsh marine environments
Meets IMO Tier II emissions and typical classification society approvals

Weaknesses

Large physical footprint and weight compared with newer hybrid or gas‑turbine alternatives
Fuel consumption rises sharply at low load, reducing efficiency for intermittent use
Noise and vibration levels higher than some modern low‑speed engines
Limited to 60 Hz operation; not directly compatible with vessels standardized on 50 Hz
Requires regular oil changes and scheduled overhauls typical of high‑speed diesel sets

Typical Vessels: Cruise shipOffshore support vessel (OSV)Container shipBulk carrierTanker

Certifications: ABSDNV GLIMO Tier II

Decision Guide: Choose if you need a robust, high‑power auxiliary generator with proven marine certification and can accommodate its size and fuel consumption. Avoid if vessel space is limited, low‑load efficiency is critical, or a 50 Hz system or lower‑emission gas‑fuel solution is required.

Use Cases: The PI7 is typically installed as the main hotel‑service generator on large passenger vessels, as an auxiliary power source for offshore supply ships, and as an emergency generator on tankers and bulk carriers. It also supports dynamic positioning (DP) loads where reliable, high‑capacity electricity is essential.

Datasheet

PI7 2000kVA 690V 50Hz unverified

· brushless synchronous generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2000 kVA) in a relatively compact footprint for main propulsion or hotel load support
Four‑pole design provides stable 50 Hz frequency with low vibration
IP23 enclosure protects against dust and incidental splashes, suitable for protected engine‑room locations
Insulation class H allows operation at elevated temperatures up to 180 °C
Global Cummins/Stamford service network ensures parts availability and technical support

Weaknesses

IP23 rating is not adequate for exposed wet areas; requires dry installation space
Physical size and weight may restrict placement on smaller vessels or retrofits
Brushless configuration needs a separate exciter, adding to system complexity
Rated only for 50 Hz operation; using in 60 Hz markets would require derating or redesign
Higher capital cost compared with lower‑rated generators

Typical Vessels: Large TankerContainer ShipCruise VesselOffshore Supply VesselLNG Carrier

Decision Guide: Choose if: you need a robust 2000 kVA source for 50 Hz shipboard power, have protected engine‑room space, and value Cummins global support. Avoid if: the installation area is exposed to water spray, vessel size limits large equipment, or you require 60 Hz operation without derating.

Use Cases: Typically installed as a main generator set on large commercial vessels to supply propulsion auxiliaries and hotel loads, often paired with diesel engine drives in dual‑fuel or pure diesel configurations. Also used in offshore platforms where high continuous power and reliability are critical.

Datasheet

PI7 2000kVA 690V 60Hz unverified

· high-speed marine alternator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2000 kVA in a relatively compact footprint.
Class H insulation tolerates high ambient temperatures common in engine rooms.
Four‑pole design provides smooth, low‑vibration operation at 60 Hz.
Widely supported by Cummins global service network and spare parts availability.
Standard 690 V output matches most marine distribution systems.

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suited for harsh, wet environments without additional shielding.
Higher fuel consumption at part‑load compared with low‑speed generators of similar rating.
Noise and vibration levels are greater than low‑speed, large‑diameter alternators.
Cooling system requires adequate airflow; installation constraints may be tighter on cramped engine rooms.

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierBulk carrier

Decision Guide: Choose if you need a proven, high‑output generator that fits into limited engine‑room space and can operate at elevated temperatures. Avoid if the installation demands a fully sealed (IP66+) unit, ultra‑low noise operation, or optimal fuel efficiency at low loads.

Use Cases: Commonly installed as part of the main power plant on large commercial vessels for propulsion support and hotel load, as well as in emergency generator sets where rapid response and high capacity are required.

Datasheet

PI8 2000kVA 400V 50Hz unverified

· high-speed diesel generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Robust Cummins Stamford engineering with proven field reliability
Integrated control and monitoring system simplifies operation and diagnostics
High power density suitable for vessels with limited engine‑room space
Class‑approved (ABS) for marine installation, meeting IMO emission standards
Fast start‑up and load acceptance for auxiliary power needs

Weaknesses

Relatively high fuel consumption at part‑load compared with medium‑speed units
Noise and vibration levels higher than low‑speed generators, requiring additional mitigation
Large physical footprint and weight may limit installation on smaller vessels
Maintenance intervals (oil change, filter service) are frequent for high‑speed engines

Typical Vessels: Cruise shipOffshore supply vesselContainer shipBulk carrierLNG/LPG carrier

Certifications: ABS

Decision Guide: Choose if: you need a compact, high‑output auxiliary generator with strong OEM support and ABS class approval, especially on vessels where space is at a premium. Avoid if: the vessel operates primarily at low loads, has strict noise limits, or prefers a medium/low‑speed engine for better fuel efficiency.

Use Cases: Typically installed as a main auxiliary power source on large passenger ships, offshore platform supply vessels, and high‑capacity cargo carriers to supply hotel load, deck machinery, and emergency power.

Datasheet

PI8 2000kVA 400V 60Hz unverified

· brushless marine alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2000 kVA) in a compact footprint for 400 V/60 Hz systems
Brushless design reduces routine maintenance and improves reliability
Class H insulation permits operation at elevated temperatures, enhancing durability
IP23 enclosure provides protection against splashing water and dust typical on ships
Widely used and supported by Cummins service network worldwide

Weaknesses

Fixed 400 V/60 Hz rating limits flexibility for vessels operating on 50 Hz or different voltages
Requires dedicated cooling‑water system and space for the IP23 enclosure
Initial capital cost is higher than smaller, lower‑power generators
Heavy and bulky compared with newer high‑speed generator sets (weight not specified)
Specialised service training needed for Cummins/Stamford alternators

Typical Vessels: Large tankersContainer shipsCruise linersOffshore supply vesselsLNG carriers

Decision Guide: Choose if: you need a proven, high‑capacity 2000 kVA generator for a 400 V/60 Hz marine electrical system and have the space for an IP23 enclosure; you value low maintenance brushless operation and global support. Avoid if: your vessel operates on 50 Hz or requires a more compact, lower‑cost solution, or if space and weight constraints are critical.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads on cruise ships, as an emergency power source on tankers, or as part of the power plant on offshore supply vessels where reliable high‑power generation is essential.

Datasheet

PI8 2000kVA 440V 50Hz unverified

· brushless marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MVA) in a single compact unit
Integrated control and protection system reduces wiring complexity
Proven reliability with extensive service network worldwide
Class H insulation allows operation up to 180 °C, extending lifespan in harsh marine environments
IP23 enclosure provides adequate protection against splashing water while allowing easy access for maintenance

Weaknesses

Relatively large footprint and weight compared with low‑speed generators of similar rating
Fuel consumption rises sharply at part‑load; efficiency is best near rated output
Requires regular brushless exciter maintenance (bearing inspection, cooling checks)
Single‑unit design limits redundancy unless paired with a parallel set
Standard 440 V/50 Hz may need step‑down transformers for vessels using 60 Hz systems

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Certifications: ABS Class ApprovalDNV‑GL Type ApprovalIMO D‑2 (Electrical Equipment)USCG Type Approval (where applicable)

Decision Guide: Choose if you need a proven, high‑output auxiliary generator for large vessels with space for an IP23 enclosure and want integrated control electronics. Avoid if vessel size limits installation space, you require superior part‑load efficiency, or you prefer low‑speed, higher‑efficiency gensets for fuel‑saving strategies.

Use Cases: Typically installed as the main auxiliary power source on large commercial ships to supply hotel loads, cargo handling equipment, and emergency generators. Also used in dual‑generator configurations where redundancy and load sharing are required.

Datasheet

PI8 2000kVA 440V 60Hz unverified

· high‑speed water‑cooled marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 2 MVA in a relatively compact footprint.
Proven reliability on large commercial vessels and naval auxiliaries.
Integrated control system compatible with Cummins engine sets for seamless operation.
Modular design simplifies installation, alignment and routine maintenance.
Standard 60 Hz output matches US‑flagged vessel requirements.

Weaknesses

IP23 enclosure limits exposure to harsh weather; additional shielding needed in wet decks.
Large physical size and weight may require substantial structural support.
Higher fuel consumption when paired with older low‑efficiency prime movers.
Requires regular bearing and brush inspections due to high rotational speed.
Limited to 4‑pole operation, which can produce higher vibration at certain loads.

Typical Vessels: Container shipCruise linerLarge tankerBulk carrierOffshore supply vessel

Certifications: ABSDNV GL

Decision Guide: Choose if you need a proven, high‑output generator for 60 Hz vessels where space is at a premium and you can provide adequate enclosure protection. Avoid if the installation environment is exposed to heavy spray or saltwater without additional shielding, or if weight and footprint constraints are critical.

Use Cases: The PI8 is typically installed as the main ship service generator on large commercial ships, providing power for propulsion auxiliaries, hotel loads, cargo handling equipment, and emergency systems. It is also used in naval support vessels where a reliable high‑capacity electrical supply is essential.

Datasheet

PI8 2000kVA 690V 50Hz unverified

· high‑speed diesel generator set

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact IP23 enclosure suitable for engine rooms with limited space
Class H insulation allows operation up to 180 °C, enhancing durability
Four‑pole design provides stable 50 Hz output with low harmonic distortion
Integrated control and protection system simplifies installation and commissioning
Widely supported global service network from Cummins

Weaknesses

Higher specific fuel consumption compared with newer low‑speed or hybrid gensets
Noise and vibration levels are greater than some low‑speed alternatives, requiring additional acoustic treatment
Routine maintenance intervals (oil change, filter replacement) are relatively short for high‑speed units
Limited redundancy if only a single unit is installed on board

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: ABSDNV GL

Decision Guide: Choose the PI8 when you need a proven, compact high‑speed generator with strong service support for vessels that have space constraints and can accommodate its fuel consumption and noise profile. Avoid it on ultra‑low‑emission projects or where maximum fuel efficiency and minimal acoustic footprint are top priorities; in those cases consider low‑speed diesel sets or hybrid solutions.

Use Cases: The PI8 is typically installed as part of the main auxiliary power plant on large merchant ships, providing ship service power for propulsion auxiliaries, cargo handling equipment, hotel loads, and emergency backup. It is also used on offshore platforms where a compact, high‑output generator is required to supply both operational and safety‑critical loads.

Datasheet

PI8 2000kVA 690V 60Hz unverified

· high-speed diesel generator set

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint – suitable for vessels with limited engine‑room space
Fast start‑up and load acceptance, ideal for hotel‑load fluctuations
Proven Cummins/Stamford reliability with extensive service network
Modular design simplifies installation and maintenance

Weaknesses

Higher specific fuel consumption compared with low‑speed gensets of similar rating
IP23 enclosure provides limited protection against water ingress; not suited for harsh, wet deck environments
Noise and vibration levels higher than low‑speed alternatives, may require additional acoustic treatment
Requires regular oil changes and more frequent maintenance intervals

Typical Vessels: TankersContainer shipsCruise linersOffshore supply vesselsLNG carriers

Certifications: ABSDNV GLUSCG Type Approval

Decision Guide: Choose if: you need a high‑power, space‑efficient generator with quick response for hotel or emergency loads and have access to Cummins service support. Avoid if: the vessel operates in very wet environments requiring higher enclosure ratings, or if fuel efficiency and low noise are top priorities and a low‑speed genset is feasible.

Use Cases: Typically installed as main auxiliary power source on large merchant vessels, providing hotel services, cargo handling equipment, and emergency power. Also used on offshore support ships where rapid load changes and compact installations are essential.

Datasheet

PI8 2500kVA 400V 50Hz unverified

· high‑speed marine alternator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 2500 kVA in a relatively small footprint, saving valuable engine‑room space.
Proven reliability with Cummins Stamford’s long service history on commercial vessels.
Integrated electronic control (Cummins Power Generation Control) simplifies start‑up, load sharing and monitoring.
Class H insulation allows operation at elevated temperatures, improving durability in hot climates.
Standard 400 V/50 Hz output matches most shipboard electrical distribution systems.

Weaknesses

Higher fuel consumption compared with slower‑speed generators of similar rating.
Noise level is greater than low‑speed alternatives; may require additional acoustic insulation.
IP23 enclosure provides limited protection against water ingress, necessitating careful ventilation and drainage design.
Maintenance intervals are shorter than some low‑speed gensets due to higher rotational speed.

Typical Vessels: Container shipsBulk carriersTanker vesselsCruise linersOffshore supply vesselsNaval auxiliaries

Certifications: ABSDNV GLLloyd's Register

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for a vessel with limited engine‑room space and require integrated electronic control. Avoid if fuel efficiency or low acoustic signature are top priorities, or if the installation environment cannot accommodate an IP23 enclosure without additional protection.

Use Cases: The PI8 is typically installed as part of the ship's main auxiliary power plant, supplying hotel loads, cargo handling equipment, and emergency systems on large commercial vessels. It is also used in cruise ships for high‑capacity hotel power and in offshore supply vessels where space constraints demand a high‑density generator.

Datasheet

PI8 2500kVA 400V 60Hz unverified

· diesel‑driven alternator

Power (kVA)

2500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2.5 MVA) suitable for medium‑large vessels' auxiliary loads
Robust Class H insulation allowing operation in high‑temperature engine rooms
IP23 enclosure provides protection against splashing water and dust typical of engine spaces
Cummins reputation for reliability and worldwide service support
Integrated control package compatible with common ship power management systems

Weaknesses

Physical size and weight are substantial, requiring dedicated space in the machinery room
Limited to 60 Hz operation – not suitable for vessels standardized on 50 Hz
Requires high‑quality diesel fuel and regular maintenance of the high‑speed engine
Cooling system must be sized for the full 2.5 MVA load, adding complexity

Typical Vessels: Cruise shipsOffshore supply vesselsLNG carriers (auxiliary power)Container ships (>10 000 TEU)Large ferries

Decision Guide: Choose if you need a proven, high‑output auxiliary generator at 400 V/60 Hz and have sufficient engine‑room space. Avoid if the vessel operates on 50 Hz, has strict weight/space limits, or requires a low‑speed, fuel‑efficient set.

Use Cases: Typically installed as the main auxiliary generator on cruise liners, offshore platform supply ships, and large container vessels to provide hotel loads, cargo refrigeration, and emergency power. Also used in retrofits where a reliable 2.5 MVA source is required without redesigning the existing electrical distribution.

Datasheet

PI8 2500kVA 440V 50Hz unverified

· diesel-driven high-speed generator

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 2.5 MVA in a compact footprint compared with slower‑speed units
Proven Cummins/Stamford service network worldwide, simplifying spares and maintenance contracts
IP23 enclosure offers protection against splashing water while allowing easy access for routine servicing
Insulation class H provides excellent thermal endurance for continuous operation at high loads
Standard integration with Cummins Power Generation Control System (PGCS) enables remote monitoring and automated load sharing

Weaknesses

Relatively high fuel consumption at part‑load compared with medium‑speed or dual‑fuel alternatives
Noise level can be significant; additional acoustic insulation may be required for passenger vessels
Physical size and weight are larger than low‑speed, high‑efficiency generators of similar rating
Requires regular oil changes and filter maintenance typical of high‑speed diesel engines
Emission compliance may need after‑treatment (e.g., SCR) to meet the latest IMO Tier III limits

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise ferryOffshore supply vessel

Certifications: ABSDNV GL

Decision Guide: Choose if you need a robust, high‑power auxiliary generator with global Cummins support and can accommodate its size and fuel consumption. Avoid if space is at a premium, low‑emission Tier III compliance is mandatory without additional after‑treatment, or you prefer a lower‑speed, higher‑efficiency unit for continuous base load.

Use Cases: The PI8 is typically installed as an auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on large merchant vessels. It is also used in dynamic positioning systems where rapid response and redundancy are required.

Datasheet

PI8 2500kVA 440V 60Hz unverified

Power (kVA)

2500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (2.5 MVA) suitable for main propulsion auxiliary or hotel load on large ships
Robust H‑class insulation allowing reliable operation in high temperature environments
Proven track record with major shipowners and classification societies
Modular design facilitates installation, maintenance and future upgrades
Available with integrated remote monitoring and control interfaces

Weaknesses

Large physical footprint and weight require substantial engine‑room space
Optimised for 60 Hz; not ideal for vessels operating primarily on 50 Hz power systems without conversion
Fuel consumption rises sharply at low load percentages, reducing efficiency in part‑load operation
Requires a dedicated cooling water system and regular oil maintenance intervals
Higher initial capital cost compared with smaller, lower‑output generators

Typical Vessels: Crude Oil TankerProduct TankerContainer Ship (≥5 000 TEU)Bulk Carrier (≥70 000 dwt)Cruise Ship (mid‑size)

Certifications: ABSDNV GL

Decision Guide: Choose if the vessel needs a reliable 2.5 MVA auxiliary power source, operates in 60 Hz regions and has sufficient engine‑room volume for a large generator set. Avoid if the ship is limited to 50 Hz electrical systems, has tight space constraints, or primarily runs at low load where fuel efficiency is critical.

Use Cases: The PI8 2500 kVA unit is typically installed as a main auxiliary generator on long‑haul tankers and container vessels, providing power for propulsion auxiliaries, cargo handling equipment, hotel services and emergency backup. It is also used on cruise ships to support extensive hotel loads and on offshore supply vessels that require high continuous power output.

Datasheet

PI8 2500kVA 690V 50Hz unverified

· brushless synchronous generator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2.5 MVA in a relatively compact footprint
Class H insulation allows operation at elevated temperatures typical of engine rooms
Standard 690 V, 50 Hz output matches most marine electrical systems and simplifies integration
Proven track record on a wide range of commercial vessels, offering strong reliability data
IP23 enclosure provides adequate protection against splashing water while allowing easy access for maintenance

Weaknesses

IP23 rating is not dust‑tight; unsuitable for environments requiring higher ingress protection (e.g., IP55)
Noise and vibration levels are higher than newer low‑speed, low‑rpm generators
Requires external cooling or ventilation in hot climates to maintain temperature limits
Limited to 50 Hz operation – not directly compatible with vessels that use 60 Hz systems

Typical Vessels: Container shipBulk carrierTankerGeneral cargo vesselCruise ship (mid‑size)Offshore supply vessel

Certifications: ABSDNV

Decision Guide: Choose if you need a proven 2.5 MVA auxiliary generator with standard 690 V/50 Hz output, class H insulation for high‑temperature rooms, and a compact design that fits typical engine‑room layouts. Avoid if the installation demands higher ingress protection (IP55+), lower acoustic signature, or operation on a 60 Hz electrical system.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size cargo ships to supply hotel loads, deck machinery, and emergency power; also used in cruise vessels for hotel services and in offshore supply ships where a reliable, high‑temperature tolerant alternator is required.

Datasheet

PI8 2500kVA 690V 60Hz unverified

· high-speed marine alternator

Power (kVA)

2500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2500 kVA in a compact footprint thanks to 1800 rpm operation.
Proven reliability with extensive service history on large commercial vessels.
Direct compatibility with Cummins Stamford diesel engines and standard 690 V shipboard bus systems.
IP23 enclosure suitable for typical engine‑room environments while allowing easy access for maintenance.
Insulation class H provides tolerance to elevated operating temperatures.

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for harsh external installations.
High rotational speed can generate more vibration and acoustic noise compared with low‑speed units.
Designed for 60 Hz only – requires derating or a different model for 50 Hz markets.
Requires regular brush/rotor maintenance (if brushed) and cooling system upkeep.
Limited to standard 690 V bus; conversion to other voltages adds complexity.

Typical Vessels: Container shipsCrude oil tankersBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a high‑power, compact generator for a 690 V/60 Hz shipboard electrical system and already plan to use Cummins engines. Avoid if the installation requires higher ingress protection (IP55+), operation on 50 Hz grids, or ultra‑low vibration/noise environments.

Use Cases: Main auxiliary power generation on large merchant vessels, emergency generator sets for hotel load, and secondary propulsion drives where space is at a premium.

Datasheet

PI8 3000kVA 400V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

3000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (3 MVA) suitable for large vessel service loads
Robust IP23 enclosure provides protection against dust and splash water
Insulation class H allows operation in high ambient temperatures
Four‑pole design ensures stable frequency and smooth torque characteristics
Cummins/Stamford heritage of proven reliability and widespread support network

Weaknesses

Relatively large footprint and weight require dedicated engine room space
IP23 rating is not fully watertight; additional shielding may be needed in harsh marine environments
Standard output voltage of 400 V may necessitate step‑up/down transformers for some shipboard distribution schemes
Maintenance intervals typical of high‑output diesel generators (oil changes, brush inspections) can impact availability

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑output (≈3 MVA) generator for vessels with ample engine‑room space and can accommodate an IP23 enclosure. Avoid if: the installation requires a fully sealed (IP65+) unit, has strict weight/space constraints, or demands a different standard voltage without additional transformers.

Use Cases: The PI8 is commonly installed as the main auxiliary generator on large commercial ships to supply hotel loads, cargo handling equipment, and emergency power. It is also used in cruise vessels for extensive passenger‑area electricity demand and on offshore support ships where high reliability under hot climate conditions is essential.

Datasheet

PI8 3000kVA 400V 60Hz unverified

· diesel‑driven high‑speed generator set

Power (kVA)

3000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Integrated Cummins engine and Stamford alternator platform with a long service record in marine applications
High power output (3 MW) suitable for main propulsion or large auxiliary loads
Insulation class H provides good thermal endurance for continuous operation
Standard 400 V, 60 Hz output matches most North‑American and Asian shipboard electrical systems

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh wet‑deck environments without additional shielding
Fuel consumption is relatively high at part‑load compared with medium‑speed or low‑speed generators of similar rating
Designed for 60 Hz markets only – unsuitable where 50 Hz is required without a frequency converter
Physical size and weight are substantial, requiring dedicated engine room space

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑output 3 MW generator for 400 V/60 Hz systems on large vessels and have existing Cummins support infrastructure. Avoid if the installation space is limited, water‑tight protection is critical, or the vessel operates primarily on 50 Hz power grids.

Use Cases: Commonly installed as a main propulsion generator on large tankers and container ships, or as a high‑capacity auxiliary generator for hotel loads on cruise vessels and offshore supply platforms. Also used in emergency power configurations where rapid, reliable start‑up is required.

Datasheet

PI8 3000kVA 440V 50Hz unverified

· air-cooled 4‑pole marine alternator

Power (kVA)

3000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3 MVA) in a single unit reduces the number of generators needed
Insulation class H provides reliable operation at elevated temperatures
Standard 440 V/50 Hz rating matches most shipboard electrical systems
Proven Cummins/Stamford brand reputation and global service network
Compact IP23 enclosure suitable for protected engine‑room installations

Weaknesses

IP23 offers only drip‑proof protection; not suitable for harsh, wet environments without additional shielding
Brush‑type construction requires periodic inspection and replacement
Noise and vibration levels are higher than newer diesel‑electric or hybrid solutions
Physical size and weight can be a limitation on vessels with tight engine‑room space
Emissions compliance may require after‑treatment to meet the latest IMO Tier III standards

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>5,000 TEU)Cruise linersOffshore supply vesselsLNG carriers

Certifications: ABSDNV GLLR

Decision Guide: Choose if you need a proven high‑power auxiliary generator with worldwide Cummins support, standard 440 V/50 Hz compatibility, and robust thermal performance. Avoid if the installation requires higher ingress protection (e.g., IP55), ultra‑low emissions without additional after‑treatment, or space‑critical engine rooms where newer compact diesel‑electric units are preferred.

Use Cases: Typically installed as a main auxiliary generator on large commercial vessels to supply hotel loads and propulsion auxiliaries, and as an emergency power source for critical safety systems such as fire pumps, navigation equipment, and cargo handling gear.

Datasheet

PI8 3000kVA 440V 60Hz unverified

· diesel-driven alternator

Power (kVA)

3000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (3 MVA) suitable for large ship service loads
Four‑pole design reduces vibration and improves frequency stability
Insulation class H allows operation at elevated temperatures
Proven Cummins/Stamford reliability with extensive global support
IP23 enclosure provides splash protection while allowing easy maintenance

Weaknesses

IP23 rating is not dust‑tight; additional sealing may be required in harsh environments
Large physical footprint and weight can limit installation space on smaller vessels
Fixed 60 Hz output may require frequency conversion for regions or ships that operate at 50 Hz only
Fuel consumption is higher at low load compared with newer, more efficient gensets
Standard diesel fuel requirement; not compatible with alternative fuels without modification

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>8 000 TEU)Cruise linersOffshore supply vesselsNaval auxiliary ships

Decision Guide: Choose if: you need a robust, high‑capacity 3 MVA generator for large commercial or offshore vessels and already have Cummins service infrastructure. Avoid if: space is at a premium, you require a higher protection rating (e.g., IP66), or the vessel operates exclusively on 50 Hz without frequency conversion equipment.

Use Cases: The PI8 is typically installed as a main auxiliary generator to supply ship service power for propulsion auxiliaries, cargo handling gear, hotel loads, and emergency power. It is also used in dual‑generator configurations where redundancy and high availability are critical.

Datasheet

PI8 3000kVA 690V 50Hz unverified

· high‑speed diesel generator set

Power (kVA)

3000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 3000 kVA in a relatively compact footprint for its class
Cummins global service network and proven engine reliability
H‑class insulation permits operation at elevated temperatures
IP23 enclosure suitable for dry‑room installation while allowing easy access for maintenance
Integrated control system compatible with most ship automation platforms

Weaknesses

Fuel consumption higher than low‑speed or hybrid alternatives of similar rating
IP23 protection is not fully sealed; unsuitable for wet‑room environments without additional shielding
Large single unit may limit redundancy on vessels that require multiple independent generators
Weight and mounting requirements can be demanding on smaller hulls

Typical Vessels: Cruise shipContainer vesselBulk carrierOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if you need a high‑output auxiliary generator that fits in limited engine‑room space and you value Cummins’ worldwide support. Avoid if the installation area is exposed to water spray, if fuel efficiency is paramount, or if vessel design calls for multiple smaller redundant units.

Use Cases: Commonly installed as the main hotel‑load generator on large passenger ships, as a primary auxiliary set on container and bulk carriers, and as an emergency power source on offshore support vessels where high instantaneous output is required.

Datasheet

PI8 3000kVA 690V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

3000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high output (3 MVA) suitable for large ship hotel‑load and propulsion assist.
Class H insulation allows operation at elevated temperatures with good durability.
Robust IP23 enclosure provides protection against splash water while allowing easy access for maintenance.
Four‑pole design ensures stable 60 Hz frequency under varying loads.
Cummins/Stamford brand reputation offers extensive global support and spare‑parts availability.

Weaknesses

IP23 rating is not dust‑tight; unsuitable for environments requiring higher ingress protection (e.g., IP55).
Physical size and weight are large, demanding significant engine‑room space.
Fixed 690 V output may require additional transformers for vessels using different bus voltages.
Fuel consumption can be relatively high at part‑load compared with newer low‑speed or hybrid generators.

Typical Vessels: VLCC / ULCCLarge container ships (>10,000 TEU)Cruise linersOffshore supply vesselsLNG carriers

Decision Guide: Choose if you need a proven, high‑capacity diesel generator with strong after‑sales support for large commercial or cruise ships and have sufficient engine‑room space. Avoid if the installation requires a higher ingress protection rating, tighter weight/space constraints, or if low‑emission alternative fuels are mandatory.

Use Cases: Provides primary hotel‑load power on cruise ships, serves as an emergency generator on tankers, supplies propulsion assist on bulk carriers, and powers auxiliary systems on offshore supply vessels where reliable high‑output diesel generation is essential.

Datasheet

Siemens

120

1FC2 100kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Siemens reliability and long service life
Compact IP23 enclosure suitable for limited engine‑room space
Class‑H insulation provides high thermal tolerance
Four‑pole design gives stable frequency at 50 Hz
Integrated control interface compatible with common ship management systems

Weaknesses

Limited to 100 kVA – not suitable for vessels requiring higher auxiliary power
IP23 rating offers only limited protection against water ingress; unsuitable for very wet environments
No built‑in emission after‑treatment, so compliance depends on the prime mover engine
Spare parts may require Siemens‑specific inventory

Typical Vessels: Offshore supply vesselFerryCoastal cargo shipMedium‑size fishing vesselYacht or luxury liner with moderate hotel load

Decision Guide: Choose if you need a reliable, compact 100 kVA auxiliary generator for vessels with modest hotel loads and have existing Siemens control infrastructure. Avoid if the ship requires higher power output, stricter water‑tightness (higher IP rating), or integrated exhaust after‑treatment for emission‑critical operations.

Use Cases: Provides primary auxiliary power for lighting, HVAC, navigation equipment, and other hotel services on board; also serves as emergency generator to meet SOLAS requirements and can be used for shore‑side power supply when docked.

Datasheet

1FC2 100kVA 400V 60Hz Marine unverified

· synchronous alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design delivers stable 60 Hz output in limited engine room spaces
High‑temperature H‑class insulation allows reliable operation under elevated ambient temperatures
IP23 enclosure provides protection against dust and splashing water, suitable for indoor installation
Siemens proven reliability and long service intervals reduce downtime
Integrated control interface compatible with common ship automation systems

Weaknesses

Limited to 400 V output; may require step‑up/down transformers for vessels with different bus voltages
IP23 rating does not protect against heavy spray or immersion, restricting placement in harsh wet zones
No built‑in redundancy; a single unit must be paired with another generator for critical emergency power
Higher initial capital cost compared with some low‑cost generic alternators

Typical Vessels: Coastal cargo vesselsOffshore supply shipsFerriesPatrol and auxiliary naval craftCruise ship tenders

Decision Guide: Choose if you need a compact, high‑temperature rated 100 kVA generator for indoor installation on medium‑size vessels with standard 400 V bus systems. Avoid if the vessel requires higher voltage levels, outdoor mounting in harsh marine exposure, or built‑in redundancy without adding a second unit.

Use Cases: The 1FC2 is typically installed as an auxiliary power source to supply hotel loads, navigation equipment, and emergency lighting on board. It is also used as a standby generator for critical systems on offshore support vessels where space and temperature resilience are key considerations.

Datasheet

1FC2 100kVA 440V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H suitable for elevated temperature environments
Compact IP23 enclosure saves space in engine rooms
Four‑pole design yields standard 1500 rpm speed at 50 Hz, matching common marine diesel engines
Siemens brand reputation ensures strong after‑sales support and spare parts availability
Integrated control interface compatible with most ship automation systems

Weaknesses

IP23 rating offers limited protection against water ingress; must be installed in a dry location
Maximum output of 100 kVA may be insufficient for larger vessels or high hotel loads
Fixed 440 V output requires additional transformers for ships using different voltage standards
No built‑in sound attenuation, so extra muffling may be needed in noise‑sensitive installations
Detailed weight and dimensions are not publicly disclosed, complicating layout planning

Typical Vessels: Offshore supply vesselFerryCoastal cargo shipPatrol boatYacht or tenders

Decision Guide: Choose if you need a compact, reliable 100 kVA auxiliary generator with Siemens support for vessels operating on 50 Hz systems and can provide a dry installation space. Avoid if the vessel requires higher power output, water‑tight (IP66+) protection, or operates on 60 Hz grids.

Use Cases: Commonly installed as an auxiliary generator in medium‑size ships to supply hotel loads, navigation equipment, and emergency power, often paired with a diesel engine driving the alternator for continuous operation during voyages.

Datasheet

1FC2 100kVA 440V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation permits continuous operation at elevated temperatures (up to ~180 °C).
Compact IP23 enclosure fits well in confined engine‑room spaces while providing basic protection against dust and splashing water.
Siemens reputation for reliability and low maintenance intervals on marine generators.
Four‑pole design delivers stable 60 Hz frequency with reduced vibration.
Standard control interface integrates easily with common ship power management systems.

Weaknesses

Fixed 440 V output may require additional transformers for vessels using different bus voltages (e.g., 415 V or 690 V).
IP23 rating offers limited protection; not suitable for exposed outdoor or high‑humidity installations.
Maximum 100 kVA output can be undersized for larger ships that need higher auxiliary power capacity.
Spare‑part availability may be constrained in remote regions without a local Siemens service hub.

Typical Vessels: Offshore supply vesselFerryCoastal cargo shipTugboatWorkboat

Decision Guide: Choose if you need a reliable 100 kVA auxiliary generator for vessels with standard 440 V bus systems, limited engine‑room space, and require high temperature tolerance. Avoid if the vessel demands higher power output, outdoor mounting, or a different voltage level that would necessitate additional conversion equipment.

Use Cases: Commonly installed as an auxiliary or emergency generator on medium‑size commercial vessels to supply lighting, HVAC, cargo handling gear, and navigation electronics. Also used in standby power configurations where rapid start‑up and robust thermal performance are critical.

Datasheet

1FC2 100kVA 690V 50Hz Marine unverified

· Four‑pole marine alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density and proven Siemens reliability
Class H insulation allows operation in high ambient temperatures
IP23 enclosure suitable for protected deck installations
Four‑pole design reduces vibration and improves load handling
Straightforward integration with diesel prime movers

Weaknesses

Limited to 690 V/50 Hz – not directly compatible with 60 Hz systems
IP23 provides only limited protection against water ingress; additional shielding may be required in harsh environments
Supplied as an alternator only – a separate engine is needed for a complete generator set
Higher upfront cost typical of premium Siemens equipment
Single unit offers no built‑in redundancy

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselRo‑Ro ferry

Certifications: IMO D-2

Decision Guide: Choose if you need a dependable 100 kVA auxiliary power source for a 690 V/50 Hz system, value Siemens after‑sales support, and operate in environments where class H insulation and moderate enclosure protection are sufficient. Avoid if the vessel requires 60 Hz operation, higher ingress protection (e.g., IP55), or an integrated generator set without procuring a separate engine.

Use Cases: Commonly installed as part of auxiliary power plants to supply hotel loads, emergency lighting, cargo handling equipment, and dynamic positioning auxiliaries on medium‑size commercial vessels.

Datasheet

1FC2 100kVA 690V 60Hz Marine unverified

· Brushless synchronous alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal rating (Class H) allows reliable operation in hot engine rooms.
Compact, low‑profile design suited to limited machinery spaces.
Integrated brushless excitation reduces maintenance and improves reliability.
Siemens global service network provides strong after‑sales support and spare parts availability.
Standard 690 V output matches common shipboard distribution systems.

Weaknesses

IP23 enclosure offers only splash protection; not suitable for heavily contaminated or dusty environments without additional shielding.
Fixed 690 V rating limits flexibility for vessels that standardise on higher voltages (e.g., 440 V/660 V dual‑rated systems).
Four‑pole design requires 1800 rpm at 60 Hz, which may not align with slower‑speed diesel engines without a gearbox.
Weight and dimensions are typical for a 100 kVA marine alternator but can be significant in very small vessels.
No built‑in sound attenuation; additional acoustic insulation may be required for passenger ships.

Typical Vessels: Offshore supply vesselFerryCruise ship auxiliary generator setContainer ship (auxiliary power)Tanker (hotel load)Research vessel

Decision Guide: Choose the Siemens 1FC2 when you need a proven 100 kVA marine alternator with high temperature insulation, low maintenance brushless design, and strong OEM support for vessels that operate in standard 690 V shipboard networks. Avoid it if your installation requires a fully sealed (IP55/65) enclosure, higher voltage ratings, or a lower‑speed engine coupling without a gearbox.

Use Cases: The unit is typically installed as part of the main auxiliary power plant on medium‑size commercial vessels, providing hotel load electricity and serving as an emergency generator. It is also used in offshore support ships where compact size and high thermal capability are critical for continuous operation in harsh engine‑room conditions.

Datasheet

1FC2 150kVA 400V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High reliability with Siemens proven marine heritage
Integrated protection and monitoring system reduces wiring complexity
Robust IP23 enclosure suitable for typical engine‑room environments
Insulation class H provides good thermal endurance
Four‑pole design gives stable frequency at 50 Hz

Weaknesses

Relatively heavy for its power rating, impacting space‑weight allocation
Initial capital cost higher than many generic OEM alternatives
Requires skilled personnel for commissioning and maintenance
Limited to 400 V output; additional step‑down transformers may be needed for lower‑voltage loads

Typical Vessels: General cargoOffshore supply vesselFerryCruise ship (hotel load)Small container vessel

Decision Guide: Choose if: you need a dependable, low‑maintenance auxiliary generator with Siemens global support and can accommodate its weight/size. Avoid if: budget constraints dominate, space is at a premium, or a higher power density unit is required.

Use Cases: Commonly installed as an auxiliary generator for hotel services, emergency power supply, and deck‑machinery support on medium‑sized commercial vessels where reliability and service network are critical.

Datasheet

1FC2 150kVA 400V 60Hz Marine unverified

· Four‑pole synchronous generator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal endurance thanks to Class H insulation
Compact IP23 enclosure suitable for confined engine rooms
Integrated control and remote monitoring options from Siemens
Proven reliability with a global service network
Standard 400 V/60 Hz output matches most US‑type vessel electrical systems

Weaknesses

IP23 rating provides only splash protection; not dust‑tight
Fixed 400 V/60 Hz may not suit vessels requiring 50 Hz or higher voltage platforms
Physical size can be larger than low‑speed, high‑power alternatives for the same kVA
Initial acquisition cost is typically higher than generic OEM units
Requires skilled maintenance personnel familiar with Siemens control systems

Typical Vessels: Coastal cargo vesselsFerriesOffshore supply & support vesselsYachts and luxury cruise ships (auxiliary power)Small tankers

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 150 kVA auxiliary generator with Class H insulation, prefer Siemens’ service support, and operate on a 400 V/60 Hz system. Avoid if your vessel uses 50 Hz or requires a dust‑tight (IP54+) enclosure, or if budget constraints favor lower‑cost generic units.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, navigation equipment, and cargo handling systems on medium‑size vessels; also used as standby power for emergency lighting and safety systems.

Datasheet

1FC2 150kVA 440V 50Hz Marine unverified

· brushless alternator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption for the coupled diesel engine
Brush‑free design lowers maintenance intervals and improves reliability
Compact, modular layout fits well in limited engine‑room spaces
Proven track record on a wide range of commercial vessels
Integrated control interface compatible with common ship automation systems

Weaknesses

IP23 enclosure provides only protection against solid objects; not suitable for wet or corrosive environments without additional shielding
Fixed 440 V/50 Hz output may require step‑up/down transformers on vessels that operate at other voltages or frequencies
Requires a separate diesel engine coupling, adding to overall system weight and space requirements
Initial purchase price is higher than some generic off‑the‑shelf generators of similar rating

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer shipsTankers

Certifications: DNV GL Approved Marine GeneratorABS Approval

Decision Guide: Choose if you need a reliable 150 kVA auxiliary power source with high efficiency, low maintenance and proven marine pedigree. Avoid if the installation demands a water‑tight (IP≥54) enclosure, a different voltage/frequency standard, or a lower upfront cost at the expense of service intervals.

Use Cases: Typically installed as part of an auxiliary genset for hotel load, emergency power, and standby generation on passenger vessels, offshore support ships, and cargo carriers. Also used to supply power to deck machinery, HVAC systems, and dynamic positioning auxiliaries where a stable 50 Hz supply is required.

Datasheet

1FC2 150kVA 440V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 150 kVA in a compact footprint suitable for limited engine‑room space.
Class H insulation allows operation at elevated temperatures, enhancing reliability in harsh marine environments.
IP23 enclosure provides protection against splashing water and dust while keeping the unit lightweight.
Four‑pole design yields standard 1500 rpm speed for 60 Hz operation, simplifying coupling with common diesel engines.
Integrated brushless exciter reduces maintenance compared to brushed designs.

Weaknesses

IP23 rating is not fully sealed; additional protection may be required in very wet or dusty compartments.
Requires an external cooling water system for optimal temperature control.
Limited voltage flexibility – fixed at 440 V, which may not match all vessel electrical architectures.
Higher upfront cost relative to generic low‑speed generators of similar rating.
Spare parts and service expertise are tied to Siemens dealer network, potentially limiting availability in remote ports.

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselFerry

Decision Guide: Choose if you need a compact, high‑speed auxiliary generator with proven Siemens reliability for up to 150 kVA and can accommodate an external cooling system. Avoid if your installation requires fully sealed (IP66+) equipment, a different voltage level, or the lowest possible acquisition cost.

Use Cases: Commonly installed in auxiliary power rooms as the main standby generator on medium‑sized merchant vessels, providing electricity for hotel services, cargo handling gear, and emergency systems. Also used as part of redundant power sets on cruise ships and offshore support vessels where space is at a premium.

Datasheet

1FC2 150kVA 690V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal tolerance thanks to Class H insulation
Compact footprint suitable for space‑constrained engine rooms
Robust Siemens build quality with long service life
Four‑pole design delivers stable 50 Hz output at 690 V
Standard 690 V bus voltage matches most marine auxiliary systems

Weaknesses

IP23 rating offers limited protection against dust and water ingress
Maximum output of 150 kVA may be insufficient for larger vessels or high‑power hotel loads
Requires external cooling system in hot climates
Weight and dimensions are relatively high for the power rating, affecting installation flexibility

Typical Vessels: General cargo shipsFerriesOffshore supply vesselsYachts and luxury motor vesselsSmall tankers

Decision Guide: Choose if: you need a reliable, compact auxiliary generator up to 150 kVA on medium‑size vessels, value Siemens service support, and operate in environments where Class H insulation is advantageous. Avoid if: the vessel requires higher power output, stricter ingress protection (e.g., IP54 or higher), or an integrated cooling solution that cannot accommodate external fans.

Use Cases: Typically installed as a main auxiliary generator for hotel services, emergency power supply, and deck‑machinery operation on vessels where space is limited but dependable 690 V/50 Hz power is required.

Datasheet

1FC2 150kVA 690V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for tight engine‑room spaces
Class‑H insulation allows operation at higher temperatures, improving reliability in hot climates
Four‑pole design provides stable frequency at 60 Hz with good overload capability
IP23 enclosure protects against dust and splashing water while allowing easy access for maintenance
Siemens’ integrated control interface simplifies monitoring and fault diagnostics

Weaknesses

Higher upfront cost compared with standard diesel generator sets of similar rating
Requires skilled personnel for periodic brushless exciter maintenance
Fixed 690 V output may need additional transformers for vessels using different bus voltages
Weight and mounting requirements can be significant for smaller craft

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a reliable, high‑efficiency auxiliary power source in a confined engine room and value Siemens’ proven control system. Avoid if budget constraints dominate or the vessel can accommodate larger, lower‑cost generator sets without space limitations.

Use Cases: Commonly installed as part of the ship’s emergency power plant or for supplying hotel load, cargo handling equipment, and propulsion auxiliaries on medium‑to‑large commercial vessels.

Datasheet

1FC2 200kVA 400V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption
Robust class‑H insulation suitable for harsh marine environments
Compact, modular design simplifies installation on a variety of vessels
Proven reliability with extensive service network from Siemens Marine
Integrated control interface compatible with Siemens engine and power management systems

Weaknesses

Fixed 400 V/50 Hz output limits use on vessels requiring 60 Hz or higher voltage platforms
Relatively heavy for its power rating compared with some lightweight aluminum‑frame alternatives
Requires dedicated cooling water system and precise shaft alignment
Limited overload duration (typically 110% for 30 min) may be insufficient for short‑term peak loads

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer shipsTankers

Certifications: DNV

Decision Guide: Choose if you need a reliable, high‑efficiency medium‑size generator for 400 V/50 Hz shipboard power and want seamless integration with Siemens propulsion/control systems. Avoid if your vessel operates on 60 Hz, requires a lighter unit for space‑critical installations, or needs longer overload capability.

Use Cases: Commonly installed as an auxiliary main generator on cruise liners and ferries to supply hotel loads, as emergency power on offshore platforms, and as secondary generation on container ships where redundancy is required.

Datasheet

1FC2 200kVA 400V 60Hz Marine unverified

· synchronous generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency typical of Siemens marine generators
Compact footprint suitable for limited engine‑room space
IP23 enclosure protects against dust and splashing, ideal for protected compartments
Class‑H insulation permits operation at elevated temperatures

Weaknesses

IP23 rating is not adequate for exposure to harsh weather or direct seawater spray
Fixed 60 Hz frequency limits use in regions where 50 Hz is standard
No integrated sound‑attenuation enclosure; additional silencing may be required
Limited power output (200 kVA) may be insufficient for larger vessels

Typical Vessels: Offshore supply vesselCoastal tankerFerryResearch vesselSmall container ship

Decision Guide: Choose if: you need a reliable 200 kVA generator for vessels operating in protected engine‑room spaces, require Class‑H insulation for high‑temperature environments, and operate on a 60 Hz power system. Avoid if: the installation is exposed to direct seawater spray, you need 50 Hz compatibility, or higher power ratings are required.

Use Cases: Typically installed in medium‑size commercial vessels where space is at a premium and a stable 400 V/60 Hz supply is needed for auxiliary systems, navigation equipment, and cargo handling gear. Common on offshore support ships, ferries, and coastal tankers that run primarily in US or other 60 Hz jurisdictions.

Datasheet

1FC2 200kVA 440V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High temperature tolerance (Class H) suitable for continuous operation in hot climates
Compact IP23 enclosure reduces installation space on deck or in engine rooms
Four‑pole design provides stable frequency output at 50 Hz
Siemens brand reputation offers extensive service network and spare parts availability

Weaknesses

IP23 rating does not protect against heavy water spray; additional shielding may be required in wet areas
Single‑frequency (50 Hz) limits use on vessels that require dual‑frequency capability
Typical weight of a 200 kVA marine alternator is substantial, affecting overall vessel weight budget
May need an external cooling system or dedicated ventilation to maintain Class‑H insulation limits

Typical Vessels: Coastal cargo vesselsOffshore supply shipsFerriesTugboatsSmall offshore support vessels

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator with Siemens support, operate primarily at 50 Hz and have space for an IP23‑rated unit. Avoid if the vessel requires dual‑frequency capability, higher protection against water ingress, or a lighter-weight solution.

Use Cases: Provides hotel load power, emergency standby generation, and auxiliary propulsion support on medium‑size commercial vessels operating in temperate to tropical regions.

Datasheet

1FC2 200kVA 440V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and robust Class‑H insulation suitable for hot engine rooms
Compact footprint with an IP23 splash‑proof enclosure, saving valuable space
Four‑pole design provides stable voltage and frequency output at 60 Hz
Siemens proven reliability and extensive service network worldwide

Weaknesses

Limited to 60 Hz operation; not suitable for vessels requiring 50 Hz power systems
IP23 rating offers only splash protection, not full dust or water ingress protection
Maximum output of 200 kVA may be insufficient for larger ships with higher auxiliary loads
Requires regular brush and bearing maintenance typical of synchronous machines

Typical Vessels: FerryOffshore supply vesselSmall to medium container shipCruise ship auxiliary power unitYacht / luxury vessel

Certifications: IMO Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a compact, reliable 200 kVA auxiliary generator for a 60 Hz system with high‑temperature tolerance and strong after‑sales support. Avoid if the vessel operates on 50 Hz, requires higher power output, or needs a fully sealed (IP66/68) enclosure.

Use Cases: Typically installed as an auxiliary or emergency generator set in medium‑size passenger vessels, offshore supply ships, and cruise liners to supply hotel loads, navigation equipment, and critical systems when the main propulsion plant is offline.

Datasheet

1FC2 200kVA 690V 50Hz Marine unverified

· brushless synchronous marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal endurance (Class H insulation) allows operation in hot engine rooms.
Compact footprint and low weight compared with comparable output machines, saving valuable space on board.
Integrated Siemens control system provides automated start‑stop, load sharing and fault diagnostics.
Proven reliability from extensive marine service history; low vibration and noise levels when properly mounted.

Weaknesses

IP23 enclosure offers only limited protection against dust and water ingress; additional housing may be required for harsh environments.
Standard output voltage (690 V) may need step‑up/down conversion for vessels with different distribution voltages.
Initial acquisition cost is higher than some generic OEM alternatives.

Typical Vessels: Container shipsBulk carriersTankersFerriesOffshore supply vessels

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a mid‑size (≈200 kVA) auxiliary generator with high thermal capability, compact size and Siemens after‑sales support. Avoid if the installation requires an IP55 or higher enclosure, a lower purchase price is critical, or the vessel’s power system uses a different nominal voltage.

Use Cases: Commonly installed as part of the ship's auxiliary power plant to supply hotel loads, emergency power, or to complement hybrid propulsion systems on medium‑size commercial vessels.

Datasheet

1FC2 200kVA 690V 60Hz Marine unverified

· high-speed synchronous alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and high power density suitable for limited engine room space
Insulation class H provides tolerance to elevated operating temperatures
Four‑pole design yields standard 1500 rpm speed at 60 Hz, simplifying coupling with diesel engines
IP23 enclosure offers basic protection against dust and splashing water while keeping weight low

Weaknesses

IP23 rating does not protect against strong water jets or immersion, limiting use in very wet locations
Maximum output of 200 kVA may be insufficient for larger vessels requiring higher hotel load capacity
High‑speed operation can generate more acoustic noise compared with low‑speed generators
Requires active cooling (fans) which adds maintenance items

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer ships (auxiliary power)Yachts and luxury motor vessels

Decision Guide: Choose if you need a compact, high‑temperature tolerant 200 kVA generator for auxiliary or emergency power on medium‑sized vessels with limited space. Avoid if the installation demands higher ingress protection (e.g., IP66), greater power output, or ultra‑low noise operation.

Use Cases: Commonly installed as part of a diesel‑generator set to supply hotel loads, navigation equipment, and emergency power on passenger ships, offshore support vessels, and medium‑size cargo carriers. Often paired with control panels for automatic start/stop based on load demand.

Datasheet

1FC2 250kVA 400V 50Hz Marine unverified

· brushless marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈96%) reduces fuel consumption of the coupled diesel engine
Compact footprint and low weight for a 250 kVA unit, easing installation in space‑constrained vessels
Robust class H insulation allows operation in harsh temperature environments
Standard 4‑pole design provides good overload capability (up to 150% for short periods)
Siemens after‑sales support and proven service network worldwide

Weaknesses

IP23 enclosure offers limited protection against water spray; not suitable for exposed deck installations
Fixed 400 V output may require additional transformers for vessels using higher bus voltages
Limited to 4 poles, so rotational speed is relatively high compared with low‑speed alternatives
No built‑in redundancy; a second unit is required for true N+1 backup

Typical Vessels: Container shipsGeneral cargo vesselsRo‑Ro ferriesOffshore supply vesselsCruise ships (auxiliary power)Small tankers

Decision Guide: Choose if you need a reliable, compact 250 kVA generator set with proven Siemens quality and can accommodate an IP23‑rated alternator in a protected machinery space. Avoid if the installation requires higher ingress protection (IP66) or a higher bus voltage without additional conversion equipment.

Use Cases: Commonly installed as part of auxiliary power generation sets on medium‑size merchant vessels, providing hotel load, cargo handling power and emergency supply; also used in dedicated generator rooms for offshore support ships where space efficiency is critical.

Datasheet

1FC2 250kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption
Robust Class‑H insulation allows operation in high temperature environments
Integrated Siemens control system (SISHIP) enables remote monitoring and diagnostics
Proven reliability with extensive service network worldwide
Compact IP23 enclosure saves space on crowded engine rooms

Weaknesses

Higher upfront cost compared with generic low‑cost alternatives
Requires skilled personnel for installation and maintenance of the control system
Standard cooling water system may need modification for some vessel layouts
Limited to 4‑pole, fixed‑speed operation (typically 1500 rpm)
Spare parts inventory can be larger due to proprietary components

Typical Vessels: Offshore supply vesselsFerriesCruise ships (hotel load)Coastal tankersSmall container or feeder vessels

Certifications: DNV Class ApprovalIMO Type Approval

Decision Guide: Choose if you need a reliable, high‑efficiency 250 kVA generator with integrated monitoring and proven classification approvals for medium‑size commercial vessels. Avoid if budget constraints dominate or if the vessel requires a lightweight, low‑speed generator that can operate at speeds far below 1500 rpm.

Use Cases: Typically installed as an auxiliary power source to supply hotel loads, emergency generation, or propulsion support on ferries, offshore supply ships and cruise vessels where space is limited and continuous operation under varying load conditions is required.

Datasheet

1FC2 250kVA 440V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Siemens brand reputation ensures high reliability and worldwide service support
Compact footprint suitable for vessels with limited engine‑room space
Class H insulation permits higher operating temperatures, extending life in harsh marine environments
IP23 enclosure protects against splashing water while allowing easy access for maintenance
Integrated control interface compatible with common ship automation systems

Weaknesses

Fixed 440 V/50 Hz output – not suitable for vessels requiring dual‑frequency or 60 Hz operation
Power rating (250 kVA) may be insufficient for larger ships, necessitating multiple units
IP23 protection is lower than fully dust‑tight enclosures (e.g., IP55), limiting use in very harsh spray zones
Initial capital cost typically higher than comparable non‑European alternatives

Typical Vessels: Coastal cargo vesselsFerries and passenger shipsOffshore supply & utility vesselsYachts and naval auxiliary craftSmall to medium bulk carriers

Decision Guide: Choose if: you need a proven, low‑maintenance 250 kVA generator for 50 Hz ships, value Siemens global support, and have limited engine‑room space. Avoid if: the vessel requires dual‑frequency capability, higher single‑unit power output, or you are constrained by budget and can accept lower‑priced alternatives.

Use Cases: Typically installed as a primary auxiliary generator on coastal ferries, offshore supply vessels, and small cargo ships, or as an emergency backup unit on passenger carriers where reliable, compact power is essential.

Datasheet

1FC2 250kVA 440V 60Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class‑H insulation allows operation in high ambient temperatures typical of engine rooms
Compact IP23 enclosure saves space while providing adequate protection against splashing water
Brushless design reduces maintenance intervals and eliminates brush wear issues
Siemens brand offers extensive global support, spare‑parts network and proven reliability
Four‑pole construction provides good voltage regulation at 60 Hz

Weaknesses

Only available in 60 Hz; not suitable for vessels requiring 50 Hz power systems
Initial purchase price is higher than many generic OEM alternators of similar rating
Physical dimensions are larger than some low‑profile competitors, limiting installation in very tight spaces
Requires Siemens‑compatible control and monitoring electronics for optimal performance
Spare‑part lead times can be longer if the vessel operates far from major Siemens service hubs

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if: you need a reliable 250 kVA, 60 Hz auxiliary generator with high‑temperature capability and prefer Siemens global service support. Avoid if: the vessel operates on a 50 Hz grid, space or weight constraints are critical, or budget sensitivity outweighs brand advantages.

Use Cases: Commonly installed as part of an auxiliary power plant to supply ship service loads (lighting, HVAC, cargo handling equipment) and as an emergency generator on vessels where continuous, low‑maintenance power is essential.

Datasheet

1FC2 250kVA 690V 50Hz Marine unverified

· high-speed diesel generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 250 kVA in a relatively small footprint
Robust class‑H insulation suitable for harsh marine environments
Integrated Siemens control system simplifies monitoring and diagnostics
Proven reliability with extensive service network worldwide

Weaknesses

Requires a high‑speed diesel engine, which may increase fuel consumption compared with low‑speed gensets
IP23 enclosure offers limited protection against water spray; not suitable for exposed deck installations
Fixed 690 V output limits use on vessels that standardise on higher bus voltages

Typical Vessels: Container shipsCruise linersOffshore supply vesselsFerriesNaval auxiliary vessels

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a compact, high‑power auxiliary generator for 690 V/50 Hz systems and value Siemens’ integrated control and service support. Avoid if the vessel operates on higher bus voltages, requires low‑speed engine coupling, or needs an enclosure with higher water ingress protection.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, emergency power, and propulsion auxiliaries on large commercial vessels where space is at a premium.

Datasheet

1FC2 250kVA 690V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates slip‑rings and reduces maintenance intervals
Class H insulation permits higher operating temperatures and improves reliability
Compact IP23 enclosure suitable for typical shipboard engine rooms
Four‑pole construction provides stable frequency output at 60 Hz
Siemens brand reputation ensures strong after‑sales support and spare‑parts availability

Weaknesses

IP23 rating offers limited protection against water ingress; additional sealing may be required in wet locations
Only rated for 60 Hz – not directly compatible with vessels standardized on 50 Hz systems
Higher capital cost compared with lower‑priced generic generators
Physical size and weight are substantial for a 250 kVA unit (exact figures not disclosed)
Requires an external prime mover (diesel engine) – no integrated engine package

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselFerry

Certifications: DNVLloyd's RegisterIMO D‑2

Decision Guide: Choose if you need a reliable 250 kVA auxiliary power source, operate in 60 Hz regions, and value low maintenance brushless technology with strong OEM support. Avoid if your vessel is standardized on 50 Hz, has strict water‑tight enclosure requirements, or budget constraints preclude premium pricing.

Use Cases: Typically installed as an emergency generator or hotel‑load auxiliary set to supply lighting, HVAC, cargo handling gear, and navigation equipment; also used to support dynamic positioning systems on offshore vessels.

Datasheet

1FC2 315kVA 400V 50Hz Marine unverified

· synchronous alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95% at rated load)
Insulation class H suitable for high temperature environments
Compact IP23 enclosure saves space in engine rooms
Integrated control interface compatible with Siemens SISHIP automation systems
Proven reliability with long service intervals

Weaknesses

IP23 offers limited protection against water ingress; not ideal for harsh wet zones
Fixed 400 V output may require additional transformers for higher‑voltage ship systems
Relatively heavy due to robust cast‑iron construction
Higher upfront cost compared with generic low‑cost alternators
Requires Siemens‑specific spare parts and service network

Typical Vessels: Cruise ShipFerryOffshore Supply VesselContainer ShipTanker

Certifications: DNV GLABS

Decision Guide: Choose if: you need a medium‑size (≈300 kVA) reliable auxiliary generator with high temperature tolerance and prefer Siemens integrated control; space is limited and you have access to Siemens service support. Avoid if: the vessel requires higher voltage (>400 V) or IP66 protection, weight is critical, or budget constraints favor cheaper non‑Siemens units.

Use Cases: Typically installed as a main auxiliary generator on cruise liners for hotel load, as emergency power on tankers and bulk carriers, or as a dedicated generator on offshore supply vessels to run deck machinery and accommodation services.

Datasheet

1FC2 315kVA 400V 60Hz Marine unverified

· marine alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) allows operation in elevated temperature environments
Compact footprint suitable for space‑constrained engine rooms
Four‑pole construction provides good voltage regulation at 60 Hz
IP23 enclosure offers protection against splashing water and dust while allowing easy access for maintenance
Siemens reputation for reliability and long service life

Weaknesses

Limited to 400 V output; not suitable where higher bus voltages (e.g., 660 V) are required
IP23 rating does not protect against heavy spray or immersion, limiting use in very wet locations
No built‑in sound attenuation; additional muffling may be needed for noise‑sensitive vessels
Weight and dimensions are typical of conventional alternators – not a lightweight solution for ultra‑light designs

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore support vesselFerry

Decision Guide: Choose if: you need a proven, medium‑size auxiliary generator delivering 315 kVA at 400 V/60 Hz with robust H‑class insulation and a compact layout. Avoid if: the vessel requires higher voltage busbars, stricter ingress protection (e.g., IP65), or integrated low‑noise solutions without additional muffling.

Use Cases: Commonly installed as an auxiliary generator set on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency power. Also used in offshore support ships where reliable, space‑efficient power generation is critical for dynamic positioning and crew amenities.

Datasheet

1FC2 315kVA 440V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal rating (Class H) allows operation in hot climates.
Compact 4‑pole construction gives good power density for its size.
IP23 enclosure provides protection against dust and limited water ingress, suitable for most engine rooms.
Siemens global support network ensures spare parts availability and service expertise.
Standard 50 Hz output matches most shore‑side and shipboard electrical systems.

Weaknesses

Fixed 440 V/50 Hz rating limits flexibility for vessels requiring dual‑frequency or higher voltage solutions.
IP23 rating does not protect against heavy spray or immersion, requiring careful placement.
Relatively high weight compared with newer lightweight aluminum‑frame alternatives.
No built‑in exhaust after‑treatment; emissions depend on the prime mover engine.
Limited to diesel‑driven applications; not directly compatible with LNG or dual‑fuel setups.

Typical Vessels: Offshore Supply Vessel (OSV)Platform Supply Vessel (PSV)Small Container ShipBulk Carrier (auxiliary power)Cruise ship hotel load

Certifications: IMO D-2DNV

Decision Guide: Choose if you need a reliable, medium‑size auxiliary generator with proven Siemens service support and high temperature capability for standard 50 Hz vessels. Avoid if your vessel requires dual‑frequency output, higher voltage, lighter weight solutions, or integrated emissions control beyond what the prime mover provides.

Use Cases: Typically installed as an auxiliary power source to supply hotel loads, cargo handling equipment, and emergency systems on offshore support ships and medium‑size commercial vessels, often paired with a diesel engine in the main machinery space.

Datasheet

1FC2 315kVA 440V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal tolerance (Class H) suitable for hot engine rooms
Compact 4‑pole design provides stable voltage at 60 Hz
Siemens brand reliability with extensive global service network
IP23 enclosure protects against dust and spray, ideal for indoor installation
Standard 440 V output matches common shipboard distribution systems

Weaknesses

IP23 rating does not protect against heavy splashing or seawater exposure; additional shielding may be required
Limited to 60 Hz operation – unsuitable for vessels standardized on 50 Hz
No built‑in exhaust silencing; auxiliary muffler needed for noise‑sensitive areas
Fixed 315 kVA rating may be oversized for small craft or undersized for large carriers

Typical Vessels: Offshore supply vesselFerryMedium‑size container feederProduct tankerCruise ship auxiliary power plant

Decision Guide: Choose if you need a proven Siemens generator delivering 315 kVA at 60 Hz for indoor installation on vessels that operate in warm climates and have access to Siemens after‑sales support. Avoid if the vessel requires 50 Hz power, higher ingress protection (e.g., IP65), or a smaller footprint.

Use Cases: Provides main auxiliary power for ship service loads such as lighting, HVAC, cargo handling equipment, and can serve as an emergency generator on vessels where reliable, high‑temperature tolerant generation is critical.

Datasheet

1FC2 315kVA 690V 50Hz Marine unverified

· four‑pole synchronous alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) provides excellent thermal endurance for continuous operation.
Robust marine‑grade construction with IP23 protection against dust and splashing water.
Siemens reputation for reliability and long service intervals in harsh sea environments.
Four‑pole design delivers smooth torque and lower vibration compared with two‑pole units.

Weaknesses

Relatively large footprint and weight typical of cast‑iron frame alternators (exact figures not provided).
Limited to 690 V/50 Hz; not directly compatible with vessels requiring 60 Hz or different voltage levels.
No built‑in sound attenuation; additional acoustic insulation may be required for passenger ships.

Typical Vessels: Platform supply vessel (PSV)Offshore support vesselMedium‑size container shipFerryCruise ship auxiliary power

Decision Guide: Choose if you need a proven, high‑temperature‑rated alternator of ~315 kVA for 690 V/50 Hz systems on vessels where space and weight are not the primary constraints. Avoid if your vessel requires higher power density, 60 Hz operation, or integrated acoustic treatment.

Use Cases: Commonly installed as part of auxiliary generator sets on offshore supply ships and medium‑size commercial vessels to provide reliable electrical power for hotel loads, cargo handling equipment, and emergency systems.

Datasheet

1FC2 315kVA 690V 60Hz Marine unverified

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 315 kVA suitable for medium‑size vessels
Class H insulation allows operation in high‑temperature engine rooms
IP23 splash‑proof enclosure protects against sea spray while permitting easy deck installation
Integrated with Siemens control and monitoring systems for simplified commissioning

Weaknesses

Fixed 690 V output may require additional transformers for vessels standardising on other voltages
IP23 rating does not provide full dust protection, limiting placement in very harsh environments
Physical size and weight are typical of a 300 kVA unit, which can be restrictive on smaller hulls

Typical Vessels: Platform Supply Vessel (PSV)Offshore Support VesselFerrySmall cruise shipNaval auxiliary vessel

Certifications: DNVGL

Decision Guide: Choose if you need a proven 300‑350 kVA generator with robust temperature tolerance and DNVGL approval for medium‑size commercial or offshore vessels. Avoid if your installation requires a lower‑profile unit, higher voltage output, or full dust‑tight enclosure.

Use Cases: Commonly installed as the main propulsion generator or as an auxiliary/hotel load generator on offshore supply ships, ferries and small cruise liners where reliable continuous power at 690 V is required.

Datasheet

1FC2 400kVA 400V 50Hz Marine unverified

· Synchronous marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High short‑circuit rating typical of Siemens designs, providing robust fault capability
Insulation class H allows operation in high ambient temperature zones
Standard 4‑pole construction gives good low‑speed torque and stable voltage regulation
IP23 enclosure is common for indoor engine‑room installations, simplifying integration

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for exposed deck mounting
Fixed 400 V/50 Hz output limits use in regions requiring 60 Hz or higher voltage systems
Weight and dimensions are comparable to other mid‑size generators, so space savings are modest
May require periodic brush inspection/replacement if the model uses brushed excitation

Typical Vessels: Container shipGeneral cargo vesselCruise liner (hotel load)Offshore supply vesselBulk carrier

Decision Guide: Choose if you need a proven, mid‑size auxiliary generator with high temperature tolerance and standard 400 V/50 Hz output for vessels already equipped with Siemens control systems. Avoid if the installation requires higher ingress protection, 60 Hz operation, or a more compact power package.

Use Cases: Provides main auxiliary power for hotel services, cargo handling equipment, and emergency generation on medium‑size merchant ships; commonly installed in engine rooms as part of a redundant generator set arrangement.

Datasheet

1FC2 400kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and stable voltage regulation typical of Siemens designs
H‑class insulation provides excellent thermal endurance
IP23 enclosure offers protection against splash water and dust in shipboard environments
Four‑pole construction yields low vibration and noise levels
Widely supported by Siemens service network for spare parts and maintenance

Weaknesses

Relatively large footprint and weight compared with newer compact generator sets
Fixed 400 V output may require additional transformers for vessels needing higher bus voltages
Requires skilled personnel for commissioning and periodic over‑haul
IP23 rating does not protect against heavy water ingress; unsuitable for wet deck installations

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer shipsTankers

Decision Guide: Choose if you need a proven, high‑efficiency 400 kVA auxiliary generator with robust insulation and an established service network. Avoid if vessel space is at a premium, higher voltage levels are required, or you prefer a fully sealed (IP66) unit for harsh deck exposure.

Use Cases: The 1FC2 is commonly installed as the main auxiliary power source on large passenger vessels and offshore support ships, providing continuous electricity for hotel loads, cargo handling equipment, and emergency systems. It also serves as a standby generator in container and tanker fleets where reliability is critical.

Datasheet

1FC2 400kVA 440V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal class (H) allows a compact design for the 400 kVA rating
Proven Siemens reliability and long service life in harsh marine environments
Integrated control interface compatible with common ship automation systems
Low vibration and noise due to balanced rotor construction
IP23 enclosure suitable for protected deck installations

Weaknesses

IP23 rating means the unit must be sheltered from direct exposure to spray or seawater
Fixed 440 V/50 Hz output may require step‑up/down transformers for vessels with different voltage standards
Relatively heavy compared with some newer oil‑free screw generators of similar power
Requires a dedicated cooling water circuit; performance can be affected by fouling if not maintained

Typical Vessels: Container shipCruise linerOffshore support vesselRo‑Ro ferryBulk carrier

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if: you need a reliable 400 kVA auxiliary generator with proven Siemens service support, have space constraints that benefit from the compact H‑class design, and operate on a protected deck area. Avoid if: your vessel requires fully weather‑proof equipment (IP66/68), operates on 60 Hz or a different voltage system without transformer provision, or you prioritize ultra‑lightweight solutions.

Use Cases: Typically installed as the main auxiliary generator on large merchant vessels to supply hotel load and emergency power, or as a secondary generator on offshore platforms where space and reliability are critical. It is also used in cruise ships for steady hotel electricity and in Ro‑Ro ferries where low vibration is essential for passenger comfort.

Datasheet

1FC2 400kVA 440V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density for its rating, delivering 400 kVA in a relatively compact footprint
Class H insulation permits operation up to 180 °C, extending service life and reducing cooling requirements
IP23 enclosure protects against splashing water and dust, suitable for most engine‑room locations
Four‑pole design provides stable 60 Hz output with low vibration
Backed by Siemens worldwide service network and proven spare‑parts logistics

Weaknesses

Fixed 60 Hz frequency limits use on vessels standardized to 50 Hz without a converter
IP23 rating may be insufficient for heavy spray zones, requiring additional protective measures
Physical size and weight are larger than some modern compact diesel generators of similar output
Requires an external exciter system, adding complexity compared with fully integrated brushless units
Availability of specific spare parts can be constrained in remote ports

Typical Vessels: Container shipCruise linerFerryOffshore supply vesselYacht

Decision Guide: Choose if: you need a robust, high‑temperature tolerant 400 kVA auxiliary generator for a 60 Hz vessel and value Siemens global support. Avoid if: the ship operates on a 50 Hz grid, space/weight is at a premium, or the installation area is exposed to heavy spray requiring higher ingress protection.

Use Cases: Commonly installed in engine rooms as an auxiliary generator supplying hotel loads, navigation equipment, and emergency power. Also used for shore‑power generation on cruise ships and offshore support vessels where reliable, continuous power is critical.

Datasheet

1FC2 400kVA 690V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and proven Siemens reliability for marine service
Compact footprint suitable for limited engine‑room space
Class H insulation allows operation at elevated temperatures
Integrated control/exciter reduces wiring complexity and maintenance
Standard 690 V output matches common shipboard distribution systems

Weaknesses

IP23 enclosure provides only limited protection against water ingress; not suitable for harsh wet‑deck locations
400 kVA rating may be undersized for large vessels requiring >1 MW auxiliary power
Requires dedicated cooling system and proper ventilation in the engine room
Higher upfront cost compared with lower‑priced generic generators
Limited to 4‑pole design, which fixes speed at 1500 rpm (50 Hz) – not adaptable for variable‑speed applications

Typical Vessels: Container shipBulk carrierGeneral cargo vesselCruise linerOffshore supply vesselFerry

Decision Guide: Choose if: you need a reliable, compact 400 kVA generator with Siemens after‑sales support and can accommodate an IP23 enclosure in a dry engine‑room environment. Avoid if: the vessel requires higher power output, stricter ingress protection (e.g., IP55), or a variable‑speed/low‑rpm solution.

Use Cases: Typically installed as auxiliary/main generators on medium‑sized merchant ships to supply shipboard electrical loads and emergency power; also used in shore‑power conversion sets where 690 V distribution is standard.

Datasheet

1FC2 400kVA 690V 60Hz Marine unverified

· high-speed diesel-driven alternator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 400 kVA in a relatively small footprint
Robust Class H insulation allows operation at elevated temperatures
Compact IP23 enclosure simplifies installation in confined engine rooms
Siemens control and monitoring system offers advanced diagnostics
Proven reliability with extensive service network worldwide

Weaknesses

IP23 rating limits direct exposure to harsh weather; requires protected location
Higher fuel consumption compared with low‑speed generators of similar output
Noise and vibration levels are higher than slower‑running units
Single‑unit design may need redundancy planning for critical vessels
Standard 690 V output may require step‑up transformers for some high‑voltage distribution schemes

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vesselFerry

Decision Guide: Choose the Siemens 1FC2 when you need a compact, high‑output generator for vessels with limited engine‑room space and can accommodate its IP23 enclosure in a protected area. Avoid it on ships requiring fully weather‑proof units or where fuel efficiency and low noise are top priorities.

Use Cases: Commonly installed as the main auxiliary power source on medium‑size cargo carriers, cruise ships, and offshore support vessels, providing electricity for hotel loads, cargo handling equipment, and emergency systems while fitting into tight engine‑room layouts.

Datasheet

1FC2 500kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature environments
Compact footprint with IP23 enclosure suitable for typical engine room layouts
Proven Siemens reliability and global after‑sales support network
Integrated control interface compatible with common ship automation systems
Good efficiency (~94 %) reducing fuel consumption

Weaknesses

IP23 rating provides limited protection against water ingress; not suited for harsh wet environments
Fixed 400 V output may require additional transformers on vessels using higher bus voltages
Physical size and weight are substantial compared with newer lightweight alternatives
Four‑pole design limits maximum speed range, affecting flexibility in some propulsion schemes

Typical Vessels: FerryRo‑RoOffshore supply vesselSmall cruise shipContainer feederCoastal tanker

Certifications: IMO D-2

Decision Guide: Choose if you need a robust 500 kVA generator with high temperature tolerance for vessels operating on a 400 V system and value Siemens service support. Avoid if the installation requires higher voltage busbars, IP66 protection, or a lighter‑weight package.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, emergency generators, or secondary propulsion drives on medium‑size commercial ships where reliable, continuous electricity is critical.

Datasheet

1FC2 500kVA 400V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates wear parts, reducing maintenance intervals.
H‑class insulation allows operation at higher temperatures and improves reliability.
IMO Type Approval (formerly D‑2) ensures compliance with international safety standards.
Compact footprint relative to power output, suitable for medium‑size vessels.
Four‑pole construction provides stable voltage regulation under varying loads.

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suited for harsh weather‑exposed installations without additional shielding.
Fixed 400 V/60 Hz output may require step‑up/down transformers on vessels using different bus voltages or frequencies.
Higher initial capital cost compared with basic low‑cost diesel generators of similar rating.
Physical size and weight are larger than newer compact modular generator sets, limiting installation flexibility.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Certifications: IMO Type Approval

Decision Guide: Choose if you need a reliable 500 kVA auxiliary generator with brushless operation, H‑class insulation and proven IMO type approval for mid‑size merchant ships. Avoid if the installation requires IP65 protection, a different voltage/frequency standard, or ultra‑compact weight‑critical solutions.

Use Cases: Commonly installed as the main auxiliary power source on medium‑sized commercial vessels, providing continuous shipboard electricity and serving as emergency backup for cargo handling equipment, navigation systems, and hotel loads.

Datasheet

1FC2 500kVA 440V 50Hz Marine unverified

· brush‑less synchronous alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (>95%) and low fuel consumption when paired with diesel engines
Compact, IP23 enclosure suitable for limited engine‑room space
Class H insulation allows operation in high ambient temperature zones
Integrated Siemens control/monitoring interface simplifies installation and maintenance
Proven reliability on a wide range of commercial vessels

Weaknesses

Fixed 440 V output may require additional transformers for ships standardising on higher voltages
Requires external cooling water system; no built‑in fan or oil cooling
Brush‑less design still needs an exciter and governor, adding to system complexity
Weight is comparable to conventional marine alternators – not a lightweight solution

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselFerry

Certifications: IMO D‑2DNV GL Type ApprovalABS Marine Equipment Certification

Decision Guide: Choose if you need a compact, high‑efficiency brush‑less alternator for auxiliary power on vessels that operate at 440 V and value integrated Siemens control systems. Avoid if your vessel requires higher standard voltages (e.g., 660 V) without additional transformers, or if space for an external cooling system is unavailable.

Use Cases: Typically installed as the main auxiliary generator on large merchant ships, providing power for hotel services, cargo handling equipment, and emergency supply. Also used in hybrid propulsion schemes where a stable AC output is required to feed converters or battery chargers.

Datasheet

1FC2 500kVA 440V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) allows reliable operation in hot engine rooms.
Compact 4‑pole design provides good power density for auxiliary applications.
Siemens proven reliability and global service network simplify maintenance.
Standard 440 V/60 Hz output matches most shipboard electrical systems without need for conversion.

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for exposed deck installations.
Fixed voltage/frequency limits flexibility for vessels requiring dual‑frequency or variable voltage solutions.
Weight and dimensions are typical of a 500 kVA unit, which may be restrictive on very space‑constrained platforms.

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: IMO D-2ABS

Decision Guide: Choose if you need a robust, high‑temperature tolerant 500 kVA generator for standard 440 V/60 Hz shipboard power and value Siemens worldwide support. Avoid if the installation requires higher ingress protection (IP≥44), dual‑frequency capability, or a lighter, more compact unit.

Use Cases: Typically installed as an auxiliary or emergency generator on medium‑size merchant vessels to supply hotel loads, cargo handling equipment, and safety systems. Also used in offshore support ships where reliable continuous power is critical.

Datasheet

1FC2 500kVA 690V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Insulation class H provides high temperature tolerance and long service life
IP23 enclosure offers basic protection against dust and water spray, suitable for most engine rooms
Four‑pole construction ensures stable frequency output at 50 Hz
Modular design simplifies installation and maintenance on board
Siemens brand reputation delivers extensive after‑sales support and spare‑parts availability

Weaknesses

IP23 rating may be insufficient for areas exposed to heavy spray or flooding; additional shielding could be required
Maximum output of 500 kVA limits use on large vessels that need >1 MVA auxiliary power
Fixed 690 V output may necessitate step‑up/step‑down transformers for vessels with different bus voltages
Higher initial capital cost compared with generic, non‑branded generators

Typical Vessels: Medium‑size tankersContainer ships (up to ~10 000 TEU)Bulk carriersOffshore supply vesselsCruise ships and ferries requiring mid‑range hotel load

Decision Guide: Choose if you need a reliable, mid‑size generator with high insulation class and Siemens support for vessels up to ~5 MW total auxiliary power. Avoid if the vessel requires higher than 500 kVA per unit, stricter ingress protection (e.g., IP65) or a different voltage bus.

Use Cases: Typically installed as part of the ship's main auxiliary power plant, supplying hotel loads, cargo handling equipment, and emergency power; often paired with an automatic control system for load sharing and redundancy on medium‑size commercial vessels.

Datasheet

1FC2 500kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Insulation class H allows operation at elevated temperatures, enhancing reliability in harsh engine‑room environments.
Compact IP23 enclosure fits typical engine‑room spaces while providing basic protection against dust and splashing water.
Four‑pole design delivers stable 60 Hz output with good torque characteristics for auxiliary power applications.
Seamless integration with Siemens SISHIP control and monitoring systems simplifies installation and operation.
Proven Siemens brand reputation for durability and long service intervals.

Weaknesses

IP23 rating offers limited protection; additional shielding may be required in wet or corrosive areas.
Designed for 60 Hz only, making it unsuitable for vessels standardized on 50 Hz without frequency conversion equipment.
690 V output often necessitates step‑down transformers to supply common shipboard voltages, adding cost and space requirements.
Physical size and weight are larger than some competing compact generators of similar rating.
Brushless rotor configuration is not confirmed for this exact model; maintenance expectations may vary.

Typical Vessels: Container ShipBulk CarrierTankerCruise ShipOffshore Supply Vessel

Certifications: IMO SOLAS Chapter 10

Decision Guide: Choose if you need a robust 500 kVA generator with high temperature tolerance, proven Siemens integration, and operate on 60 Hz in vessels where an IP23 enclosure is acceptable. Avoid if the vessel requires 50 Hz operation, higher ingress protection (e.g., IP54+), or has strict weight/space constraints.

Use Cases: Commonly installed as part of the main auxiliary power plant on large merchant ships, providing electricity for hotel services, cargo handling equipment, and emergency power; also used in dedicated emergency generator sets where reliability and rapid integration with ship control systems are critical.

Datasheet

1FC2 630kVA 400V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and robust Siemens engineering reputation
Class H insulation allows operation at elevated temperatures
Compact IP23 enclosure suitable for typical engine room layouts
Integrated control interface compatible with common ship automation systems
Proven reliability in large commercial vessels

Weaknesses

Requires a separate prime‑mover (diesel or gas engine) – not a turnkey set
IP23 provides limited protection against dust and water ingress compared with higher IP ratings
Fixed 400 V/50 Hz output may need conversion for vessels operating on 60 Hz systems
Weight and mounting requirements can be substantial for smaller ships

Typical Vessels: Container shipCruise linerBulk carrierLNG/LPG carrierOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑efficiency 630 kVA generator for 400 V/50 Hz shipboard distribution and value Siemens after‑sales support. Avoid if your vessel operates on 60 Hz, requires a higher IP rating, or you prefer an integrated engine‑generator set.

Use Cases: Commonly installed as the main auxiliary generator on large commercial vessels to supply hotel loads and emergency power, often paired with medium‑speed diesel engines in the engine room.

Datasheet

1FC2 630kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal capability with Class H insulation allowing robust operation under heavy load
Proven Siemens reliability and long service life in marine environments
Four‑pole design provides stable voltage and frequency at 60 Hz
IP23 enclosure offers basic protection against dust and water spray, suitable for most engine rooms

Weaknesses

Relatively large physical footprint and weight compared with newer compact designs
IP23 rating is not fully sealed; additional protective measures may be required in harsh or wet spaces
Optimised for 60 Hz – vessels operating on 50 Hz would need frequency conversion or a different model
Higher upfront cost typical of premium‑brand marine generators

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable, high‑capacity generator for 60 Hz auxiliary or main power on large merchant vessels and value Siemens’ service network. Avoid if: space, weight, or strict IP66/67 protection are critical, or the vessel operates primarily on 50 Hz without ready frequency conversion.

Use Cases: Commonly installed as part of the main auxiliary power plant on large cargo ships, cruise ships, and offshore vessels to supply propulsion‑related loads, hotel services, and emergency power requirements.

Datasheet

1FC2 630kVA 440V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈94 % at rated load) reduces fuel consumption for auxiliary power.
Robust IP23 enclosure and Class H insulation provide good protection against the harsh marine environment.
Integrated Siemens excitation system allows fast voltage recovery after load changes.
150 % overload capability for up to 30 minutes supports peak hotel‑load demands.
Widely supported by Siemens service network, simplifying spare‑parts logistics.

Weaknesses

IP23 rating does not protect against heavy water spray or dust ingress in the most severe conditions.
Designed for 50 Hz operation only; unsuitable for vessels requiring 60 Hz power systems.
Initial purchase price is higher than many generic alternators of similar rating.
Requires skilled personnel for excitation‑system tuning and periodic maintenance.
Physical size may be limiting on very space‑constrained engine rooms.

Typical Vessels: Container shipBulk carrierProduct tankerRo‑Ro ferryOffshore supply vessel

Certifications: DNV GL

Decision Guide: Choose if: you need a proven 630 kVA auxiliary generator with high efficiency, strong overload capability and Siemens global support on vessels operating at 50 Hz. Avoid if: the installation demands a higher IP rating (e.g., IP55), 60 Hz power, or a lower upfront cost outweighs the benefits of Siemens serviceability.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, cargo handling equipment and emergency power on medium‑size merchant vessels; also used in dual‑generator configurations for redundancy on passenger ferries and offshore support ships.

Datasheet

1FC2 630kVA 440V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides excellent thermal endurance and reliability in harsh marine environments.
Four‑pole construction yields 1500 rpm at 60 Hz, matching standard marine engine speeds for direct coupling.
Siemens brand reputation ensures proven performance and extensive after‑sales support worldwide.
IP23 enclosure offers splash protection while allowing easy access for maintenance.
Compact footprint relative to its 630 kVA rating saves valuable space in engine rooms.

Weaknesses

IP23 rating does not protect against dust or heavy water ingress; additional shielding may be required in very wet areas.
Weight and dimensions are substantial compared to newer lightweight alternatives, impacting installation flexibility.
Fixed 440 V output limits compatibility with vessels that standardise on other voltage levels without a transformer.
Higher upfront capital cost typical of Siemens marine generators.
Requires dedicated cooling system (air or water) which adds complexity to the plant layout.

Typical Vessels: Container shipsProduct tankersBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a reliable, high‑temperature‑rated 630 kVA generator with proven Siemens engineering and can accommodate the IP23 enclosure. Avoid if your vessel demands a higher ingress protection rating, lower weight, or flexible voltage options without additional transformers.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, emergency generators, or to support diesel‑electric propulsion systems on medium‑size commercial vessels where dependable continuous power is critical.

Datasheet

1FC2 630kVA 690V 50Hz Marine unverified

· brushless synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (>95%) with low fuel consumption
Robust H‑class insulation allows operation at elevated temperatures
Compact size and integrated control system reduce installation space
Brushless design minimises maintenance intervals
Proven Siemens after‑sales support and spare‑parts network

Weaknesses

IP23 enclosure provides limited protection against water ingress; not suitable for harsh wet environments without additional shielding
Fixed 690 V/50 Hz output limits use on vessels requiring 60 Hz or higher voltage systems
Relatively high capital cost compared with generic OEM generators
Requires a compatible diesel engine coupling, adding system complexity
Weight and dimensions are typical for the power class but may be restrictive in space‑constrained installations

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if you need a reliable 630 kVA auxiliary generator with high efficiency, Siemens service backing, and can accommodate the IP23 enclosure rating. Avoid if your vessel requires higher voltage or frequency options, an IP65‑rated unit for exposed locations, or a lower upfront cost solution.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel load, navigation equipment, cargo handling systems, and emergency power on large merchant vessels; also used in standby/emergency configurations where rapid start‑up and high reliability are critical.

Datasheet

1FC2 630kVA 690V 60Hz Marine unverified

· high‑speed synchronous marine alternator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint thanks to high‑speed operation, saving valuable deck space
Class H insulation allows higher temperature operation and longer service life
IP23 enclosure suitable for protected deck installations while reducing corrosion risk
Proven Siemens reliability with extensive global support and spare parts network
Integrated control interface compatible with common marine power management systems

Weaknesses

Requires a high‑speed diesel engine coupling, which may increase vibration and noise compared with low‑speed generators
IP23 rating is not fully weather‑proof; additional shelter needed for exposed locations
Designed for 60 Hz operation only, limiting use in regions where 50 Hz is standard
Higher rotational speed can lead to increased maintenance of bearings and couplings

Typical Vessels: Container shipsCruise linersOffshore supply vesselsFerriesGeneral cargo carriers

Certifications: IMO D‑2

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for a 60 Hz fleet and value Siemens’ global support. Avoid if the vessel operates primarily in 50 Hz regions or requires a fully weather‑proof (IP66+) enclosure without additional shelter.

Use Cases: Commonly installed as an auxiliary power source to supply hotel loads, emergency generators, or propulsion‑support systems on medium‑size commercial vessels where space and weight efficiency are critical.

Datasheet

1FC2 800kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal capability (Class H) suitable for hot ambient conditions
Integrated excitation and protection system reduces wiring complexity
Proven Siemens reliability with extensive service network
Good overload rating typical of 1FC2 series units
Standardised mounting and coupling options simplify installation

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for harsh wet‑deck environments without additional shielding
Physical footprint larger than newer compact, high‑speed alternatives
Requires external cooling water circuit, adding piping complexity
Higher upfront capital cost compared with some OEM competitors

Typical Vessels: Container shipCruise linerLNG carrierOffshore support vesselNaval auxiliary ship

Decision Guide: Choose if you need a robust 800 kVA generator with high temperature insulation, integrated control and a proven Siemens service record for main or emergency power on large vessels. Avoid if the installation demands a higher IP rating (e.g., IP55) or space‑critical solutions where newer compact generators are preferred.

Use Cases: Commonly installed as part of diesel‑electric propulsion plants to supply ship’s main electrical load, or as an auxiliary/emergency generator providing hotel power and critical systems on large commercial and offshore vessels.

Datasheet

1FC2 800kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 800 kVA in a compact footprint suitable for modern engine rooms
Class H insulation allows operation in high ambient temperatures and under overload conditions
IP23 enclosure provides splash protection while still permitting easy access for maintenance
Siemens global support network and proven field reliability on many commercial fleets
Four‑pole design gives stable frequency with low vibration

Weaknesses

IP23 rating is not fully weather‑proof; additional shielding needed for exposed deck installations
Relatively heavy construction may require reinforced foundations in smaller vessels
Fixed 400 V/60 Hz output limits flexibility for ships that operate on 50 Hz or higher voltages
Higher upfront cost compared with generic off‑brand alternators of similar rating
Requires a dedicated cooling system (forced air or water) to maintain class H temperature limits

Typical Vessels: Container shipCruise linerLNG carrierOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a reliable 800 kVA, 400 V/60 Hz generator with Siemens service backing and high‑temperature capability. Avoid if the installation demands full weatherproof protection (IP≥44), lower initial cost, or flexibility in voltage/frequency ratings.

Use Cases: Main auxiliary power plant for hotel load, emergency power generation on large commercial vessels, and as a dedicated generator set for propulsion support on ships with high‑temperature engine rooms.

Datasheet

1FC2 800kVA 440V 50Hz Marine unverified

· four-pole synchronous alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output of 800 kVA suitable for large vessels
Robust IP23 enclosure provides splash protection in harsh marine environments
Class H insulation permits higher operating temperatures and improves durability
Integrated Siemens control and monitoring system simplifies installation and maintenance
Proven track record on a variety of commercial ships

Weaknesses

IP23 rating does not protect against dust or heavy water ingress; unsuitable for extreme exposure zones
Designed for 440 V/50 Hz only, limiting use in regions requiring 60 Hz systems
Physical size and weight are larger than some compact, low‑speed generator alternatives
Requires dedicated cooling water system and associated piping
Higher initial capital cost compared with basic non‑Siemens generators

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierOffshore supply vesselCruise liner

Decision Guide: Choose if you need a reliable 800 kVA, 440 V/50 Hz generator for large commercial vessels and value Siemens’ integrated control system and proven service history. Avoid if the installation requires higher IP protection, operation on 60 Hz grids, or a more compact low‑weight solution.

Use Cases: Main auxiliary power generation for propulsion support, hotel load, and emergency power on large tankers, container ships, and offshore vessels where continuous high‑capacity electricity is required.

Datasheet

1FC2 800kVA 440V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) suitable for medium‑size vessels
Class H insulation allows operation at elevated temperatures
IP23 enclosure provides protection against splashing water in typical engine rooms
Siemens brand reputation for reliability and global service support
Four‑pole design gives stable 60 Hz output with low vibration

Weaknesses

Enclosure rating IP23 does not protect against dust ingress or heavy spray
Designed only for 60 Hz operation – not suitable where dual 50/60 Hz is required
Physical size and weight are substantial; may limit installation space on smaller vessels
Spare parts and maintenance expertise are tied to Siemens dealer network

Typical Vessels: Cruise shipsContainer vesselsBulk carriersOffshore support vesselsLNG/LPG carriers (auxiliary power)

Decision Guide: Choose if you need a proven, high‑capacity 800 kVA auxiliary generator with Siemens worldwide support and the vessel operates on 60 Hz systems. Avoid if your installation requires higher ingress protection (e.g., IP54), dual‑frequency capability, or strict weight/space constraints.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on medium‑to‑large commercial ships; also used in standby configurations for redundancy.

Datasheet

1FC2 800kVA 690V 50Hz Marine unverified

· marine alternator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (up to ~96%) reducing fuel consumption
Compact modular design suitable for limited engine room space
Integrated Siemens SISHIP control system for easy monitoring and diagnostics
Robust IP23 enclosure offers good protection against moisture and dust
Rated overload capability of 150 % for short‑duration peaks

Weaknesses

Relatively large physical footprint and weight compared with lower‑rated units
Standard output voltage of 690 V may require step‑up/down transformers on vessels using other voltages
Higher initial capital cost than many conventional alternators of similar rating
Requires specialized Siemens spare parts and service expertise
Optimised for 50 Hz markets; not directly compatible with 60 Hz installations without redesign

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselNaval auxiliary ship

Certifications: DNVABS

Decision Guide: Choose if: you need a reliable 800 kVA source at 690 V, have sufficient engine‑room space, and value integrated digital control with high efficiency. Avoid if: the vessel operates on a 60 Hz system, requires lower voltage distribution without transformers, or budget constraints dominate over performance benefits.

Use Cases: The 1FC2 is typically installed as an auxiliary generator set for main‑engine support, emergency power supply, and peak‑load handling on large commercial vessels where high power density and reliability are critical.

Datasheet

1FC2 800kVA 690V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) suitable for large vessel auxiliary or main generators
Class H insulation allows reliable operation at elevated temperatures
Four‑pole design provides stable frequency control at 60 Hz
IP23 enclosure offers protection against dust and limited water ingress typical of engine rooms
Siemens reputation for durability and long service life

Weaknesses

IP23 rating does not protect against heavy splashing or immersion, requiring additional shielding in wet areas
Large physical size and weight may limit installation on vessels with constrained machinery spaces
Requires dedicated cooling system to maintain temperature limits
Higher upfront cost compared with smaller, lower‑power alternators

Typical Vessels: Container shipCruise linerLNG carrierBulk carrierOffshore supply vessel

Decision Guide: Choose if the vessel needs a robust 800 kVA, 690 V, 60 Hz generator with high temperature tolerance and can accommodate the size and cooling requirements. Avoid if the ship operates on 50 Hz systems, has limited space, or requires a higher ingress protection rating for wet environments.

Use Cases: Commonly installed as an auxiliary power source for main propulsion support, hotel load supply on cruise ships, or emergency generators on large cargo vessels where reliable high‑capacity electricity is critical.

Datasheet

1FC2 1000kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈96% at rated load) reduces fuel consumption
H‑class insulation allows operation in high ambient temperatures
Compact IP23 enclosure suited to confined engine‑room spaces
Proven Siemens reliability with a global service network
Modular design simplifies installation and routine maintenance

Weaknesses

Relatively heavy and bulky compared with newer compact diesel‑generator sets
Requires an external cooling water system and regular brush inspection (if brushed)
IP23 rating offers limited protection against dust and fine particles
Higher upfront capital cost than some competing brands
Fixed 400 V output may need additional transformers for higher‑voltage bus systems

Typical Vessels: Container shipBulk carrierCruise linerFerryOffshore supply vessel

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a robust, high‑power auxiliary generator with proven Siemens service support and can accommodate its size and cooling requirements. Avoid if space is at a premium, you require higher bus voltages without additional transformers, or you prefer a lower‑cost, lighter‑weight solution.

Use Cases: Commonly installed as the main auxiliary power source on large merchant vessels, supplying hotel loads, cargo handling equipment, and emergency power; also used in hybrid propulsion arrangements where a stable electrical output is required.

Datasheet

1FC2 1000kVA 400V 60Hz Marine unverified

· brushless alternator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MW) suitable for medium‑large vessels' auxiliary loads
H‑class insulation allows operation in hotter engine rooms
Four‑pole design provides stable voltage and frequency at 60 Hz
Proven Siemens reliability and support network
Compact footprint relative to comparable 1000 kVA generators

Weaknesses

IP23 rating offers limited protection against water ingress in very harsh marine environments
Designed for 60 Hz only – not suitable for vessels requiring 50 Hz power systems
Weight and size may be restrictive on smaller ships or retrofits
Requires a dedicated cooling‑water system and regular maintenance of the exciter unit
Higher initial capital cost compared with some low‑cost competitors

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if you need a reliable, high‑output auxiliary generator for a 60 Hz vessel with sufficient space and cooling capacity, and where high temperature tolerance is important. Avoid if the ship operates on a 50 Hz system, has very tight installation envelopes, or requires a fully sealed (IP≥54) unit for extreme weather exposure.

Use Cases: The 1FC2 is typically installed as an auxiliary generator set to supply hotel loads, cargo handling equipment, and emergency power on large commercial vessels. It can also serve as a shore‑power source when docked, providing stable electricity for port facilities.

Datasheet

1FC2 1000kVA 440V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1 MVA in a compact footprint suitable for large vessels
Class‑H insulation tolerates high ambient temperatures typical of engine rooms
Four‑pole design provides stable frequency and low harmonic distortion at 50 Hz
Siemens global service network offers proven reliability and spare‑part availability
Integrated control system compatible with common ship automation platforms

Weaknesses

IP23 enclosure only protects against limited water ingress; additional sealing may be required in very wet environments
Fixed synchronous speed reduces flexibility compared with variable‑speed gensets for fuel‑efficiency optimisation
Requires an external cooling circuit, adding to installation complexity
Higher upfront capital cost than many generic OEM generators of similar rating
Physical size and weight can be significant on vessels with tight space constraints

Typical Vessels: Cruise shipContainer vesselTankerLNG carrierOffshore supply vessel

Decision Guide: Choose if: you need a reliable 1 MVA auxiliary power source with proven Siemens support, high temperature tolerance and standard 50 Hz operation. Avoid if: space is extremely limited, you require a fully sealed (IP66+) unit, or you want variable‑speed fuel‑saving capability.

Use Cases: Commonly installed as the main hotel‑load generator on large commercial ships, providing continuous power for lighting, HVAC, cargo handling equipment and serving as an emergency source under SOLAS requirements.

Datasheet

1FC2 1000kVA 440V 60Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal capability (Class H insulation) allows operation at elevated temperatures, improving load margin.
Compact footprint due to high‑speed design – valuable where space is limited on board.
Proven Siemens reliability and global after‑sales support network.
Integrated digital control interface compatible with common ship automation systems.
Four‑pole construction provides good voltage regulation across the 440 V bus.

Weaknesses

IP23 enclosure offers only protection against solid objects larger than 12.5 mm; additional shielding is required in harsh marine environments.
Designed for 60 Hz operation – not directly suitable for vessels standardized on 50 Hz without frequency conversion.
Requires a compatible high‑speed diesel engine; retrofitting to slower engines can be complex and costly.
Initial capital cost is higher than many conventional low‑speed generators of similar rating.
Maintenance personnel need specific training on Siemens brushless alternator technology.

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsMedium‑size container shipsTankersBulk carriers

Certifications: DNV

Decision Guide: Choose if: you need a compact, high‑efficiency 1 MVA generator for a 60 Hz vessel, value Siemens global service support, and can provide the required IP protection. Avoid if: the ship operates on a 50 Hz grid, requires an enclosure rated higher than IP23 without additional housing, or budget constraints favor lower‑cost low‑speed alternatives.

Use Cases: The 1FC2 is typically installed as an auxiliary generator supplying hotel loads, navigation equipment, and cargo handling systems on passenger and offshore vessels. It can also serve as a main‑generator unit on ships that use multiple medium‑size generators for redundancy, or as part of a hybrid power plant where rapid response to load changes is required.

Datasheet

1FC2 1000kVA 690V 50Hz Marine unverified

· marine synchronous generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MVA) in a compact, modular package
Insulation class H provides excellent thermal endurance for harsh marine environments
Four‑pole design yields low rotational speed (1500 rpm at 50 Hz), reducing bearing wear
Siemens global service network ensures rapid spare‑part availability and technical support
IP23 enclosure meets typical shipboard exposure requirements while allowing easy access for maintenance

Weaknesses

Physical size and weight are substantial compared to smaller auxiliary generators
IP23 rating does not protect against fine dust ingress; higher IP ratings may be required in some compartments
Standard output voltage (690 V) often necessitates step‑up transformers for high‑voltage distribution systems
Initial capital cost is higher than many generic or low‑cost alternatives
If brush‑type, periodic brush inspection/replacement adds to maintenance workload

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary ship

Decision Guide: Choose if you need a proven, high‑capacity generator with robust thermal performance and Siemens after‑sales support for medium‑size vessels operating at 690 V/50 Hz. Avoid if space, weight or budget constraints dominate, or if the vessel requires higher native output voltage or a higher IP protection level.

Use Cases: Commonly installed as an auxiliary/main generator on large commercial ships to supply propulsion‑related hotel loads, emergency power, and offshore platform support where reliable 1 MVA output is required.

Datasheet

1FC2 1000kVA 690V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MVA) suitable for large hotel and propulsion‑auxiliary loads
Class H insulation provides excellent thermal endurance for continuous operation
Robust IP23 enclosure offers protection against dust and splashing in typical engine‑room environments
Four‑pole design yields stable 60 Hz frequency with low vibration
Siemens reputation for reliability and long service life

Weaknesses

IP23 rating does not protect against water ingress from heavy spray or flooding; additional shielding may be required in harsh climates
Designed for 60 Hz only, limiting use on vessels standardized to 50 Hz regions
Physical size and weight are substantial, impacting engine‑room layout and installation planning
Requires regular brush and bearing maintenance typical of large synchronous machines
Higher initial capital cost compared with lower‑rated or generic alternators

Typical Vessels: Cruise shipLNG carrierOffshore supply vesselNaval auxiliary shipLarge container vessel

Decision Guide: Choose if: you need a proven 1 MVA, 690 V 60 Hz generator with robust thermal performance for a US‑type fleet or vessels operating on 60 Hz power systems. Avoid if: the installation requires a higher IP protection rating, 50 Hz operation, or strict weight/space constraints.

Use Cases: Provides main auxiliary power for hotel services, cargo handling equipment, and emergency generation on large commercial and offshore vessels; often paired with diesel engines in generator sets to supply continuous shipboard electricity.

Datasheet

1FJ4 200kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal endurance thanks to Class H insulation, allowing continuous operation in hot climates.
Compact IP23 enclosure provides splash protection while keeping the unit relatively small for its power rating.
Four‑pole design delivers stable 50 Hz output with low harmonic distortion, suitable for sensitive shipboard equipment.
Siemens’ integrated control and monitoring system simplifies installation and reduces maintenance downtime.
Proven reliability in a wide range of vessel classes, backed by Siemens’ long marine service history.

Weaknesses

IP23 rating offers only splash protection; not dust‑tight or suitable for harsh spray zones without additional shielding.
Fixed 400 V output may require step‑up/down transformers on vessels that operate at different bus voltages.
Cast‑iron construction adds weight, which can be a limitation in vessels with strict weight budgets.
Standard version does not include built‑in exhaust after‑treatment; additional equipment needed for Tier III emission zones.
Single‑unit configuration provides limited redundancy compared to twin‑generator arrangements.

Typical Vessels: Coastal TankerContainer Ship (up to 5,000 gt)Offshore Supply VesselFerryCruise Ship auxiliary power

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator with high‑temperature insulation and a compact IP23 enclosure for vessels operating in moderate marine environments. Avoid if the vessel must meet strict emission Tier III standards, requires dust‑tight protection, or needs built‑in redundancy without adding extra generators.

Use Cases: The 1FJ4 is typically installed as the main auxiliary generator on medium‑sized commercial ships, providing power for hotel loads, cargo handling equipment, and emergency systems. It also serves as a standby unit on offshore platforms where space is limited but robust, continuous power is essential.

Datasheet

Siemens Marine 1FJ4 200kVA 400V 60Hz Marine

1FJ4 200kVA 400V 60Hz Marine unverified

· Four‑pole synchronous marine alternator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature environments
Proven Siemens reliability and long service life
Compact IP23 enclosure suitable for typical engine room installations
Standardized 400 V three‑phase output matches most shipboard distribution systems
Compatible with Siemens control and monitoring packages

Weaknesses

IP23 rating provides limited protection against water ingress; not suited for harsh wet locations without additional shielding
Single unit – no built‑in redundancy, requiring a second generator for critical redundancy
Higher upfront cost compared with generic low‑cost alternatives
External cooling may be required in very high ambient temperatures

Typical Vessels: Product tankerOffshore supply vesselMedium‑size container shipCruise ferryNaval auxiliary

Certifications: ABSDNV-GL

Decision Guide: Choose if you need a dependable 200 kVA source with high temperature tolerance, integrated Siemens control, and ABS/DNV type approval for medium‑size vessels. Avoid if the installation requires a fully sealed (IP55+) unit, higher power output, or a very low initial cost solution.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on tankers, offshore support ships, and cruise ferries; also used in naval auxiliaries for non‑propulsion electrical demand.

Datasheet

1FJ4 200kVA 440V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design suitable for limited engine room space
Insulation class H provides high thermal endurance
Integrated control interface compatible with common ship automation systems
IP23 enclosure offers protection against dust and splashing water

Weaknesses

Limited to 440 V output; may require step‑up/down transformers for vessels using other voltages
IP23 rating does not protect against heavy spray or immersion, restricting placement in harsh wet zones
No built‑in redundancy; a single unit must be paired with an additional generator for critical loads

Typical Vessels: Coastal cargo vesselsOffshore supply shipsFerriesSmall tankersResearch and survey vessels

Decision Guide: Choose if you need a reliable 200 kVA auxiliary power source for vessels with standard 440 V distribution, limited engine‑room space, and can accommodate an IP23 enclosure. Avoid if the ship requires higher voltage outputs, immersion‑rated equipment, or built‑in redundancy for critical safety systems.

Use Cases: Commonly installed as a main auxiliary generator on medium‑size commercial ships where a single 200 kVA unit supplies hotel loads, navigation electronics, and cargo handling equipment. Often paired with diesel engines sized to match the 200 kVA rating for continuous operation during port stays or low‑speed cruising.

Datasheet

1FJ4 200kVA 440V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature environments
Robust IP23 enclosure provides protection against dust and limited moisture ingress typical of deck installations
Siemens brand reputation for reliability and extensive global service network
Four‑pole construction delivers smooth power output with reduced ripple, suitable for sensitive shipboard loads
Standard 60 Hz rating matches US and many Asian vessel electrical systems

Weaknesses

IP23 rating offers limited water protection; not ideal for harsh wet deck locations requiring higher ingress protection
Designed for 60 Hz only – unsuitable for vessels standardized on 50 Hz without frequency conversion
Physical size and weight are typical of medium‑size generators, which may limit placement in tight engine rooms
Higher initial capital cost compared with some lower‑priced generic alternatives

Typical Vessels: Container shipsBulk carriersGeneral cargo vesselsOffshore supply vesselsFerries

Decision Guide: Choose if: you need a proven 200 kVA auxiliary generator for a 60 Hz vessel, require high temperature capability (class H), and value Siemens after‑sales support. Avoid if: the installation demands higher ingress protection (e.g., IP55) or the ship operates on a 50 Hz electrical system.

Use Cases: Commonly installed as an auxiliary power source to supply hotel loads, cargo handling equipment, navigation systems, and emergency power on medium‑size commercial vessels. It can also serve as a standby generator for critical machinery in offshore support ships.

Datasheet

Siemens Marine 1FJ4 200kVA 690V 50Hz Marine

1FJ4 200kVA 690V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption for auxiliary loads
Robust Class H insulation allows reliable operation at elevated temperatures
Compact modular design fits into limited engine‑room spaces
Integrated with Siemens SIRIUS control system for easy monitoring and diagnostics
Proven track record of reliability in commercial fleets

Weaknesses

IP23 enclosure offers only limited protection against water ingress; additional housing may be required in harsh environments
200 kVA output may be insufficient for larger vessels with high hotel loads
Requires Siemens‑specific control interface, limiting flexibility with third‑party automation systems
Higher initial capital cost compared with some lower‑priced alternatives
Relatively heavy construction versus newer lightweight generator technologies

Typical Vessels: Offshore supply vesselFerryCoastal tankerSmall container shipCruise ship auxiliary power unit

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator, already use Siemens automation, and operate in moderate marine conditions where IP23 protection is adequate. Avoid if the vessel requires higher ingress protection (e.g., IP65), larger power output, or must integrate with non‑Siemens control systems.

Use Cases: Commonly installed as a hotel‑load generator on ferries and offshore supply vessels, as an emergency standby unit on coastal tankers, or to supply auxiliary power for cargo handling equipment on small container ships and cruise liners.

Datasheet

1FJ4 200kVA 690V 60Hz Marine unverified

· Four-pole marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides excellent thermal endurance.
Compact footprint for a 200 kVA rating, easing installation in engine rooms.
Brushless construction reduces wear and maintenance intervals.
Siemens control interface integrates easily with existing ship power management systems.
Proven reliability from extensive service history on commercial vessels.

Weaknesses

IP23 enclosure offers limited protection against water ingress compared to higher IP ratings.
Designed for 60 Hz only; not suitable for vessels requiring dual‑frequency capability.
Weight may be higher than some competing units of similar power output.
Requires Siemens‑specific control and monitoring equipment, limiting flexibility with third‑party systems.
Initial acquisition cost can be higher than generic alternatives.

Typical Vessels: TankerContainer ShipBulk CarrierOffshore Supply VesselCruise Ship

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator with high thermal tolerance, compact layout and Siemens system integration on a US‑flag or 60 Hz vessel. Avoid if the installation demands higher IP protection, dual‑frequency operation, or strict cost minimisation where lower‑priced alternatives suffice.

Use Cases: Commonly installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling equipment and emergency systems on medium‑size commercial vessels operating in US waters or other 60 Hz regions.

Datasheet

Siemens Marine 1FJ4 315kVA 400V 50Hz Marine

1FJ4 315kVA 400V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (>95%) typical of Siemens designs, reducing fuel consumption.
Compact footprint with a four‑pole layout suitable for limited engine‑room space.
Class H insulation permits operation up to 180 °C, enhancing durability under heavy loads.
Proven reliability backed by Siemens' long marine service history.
Compatible with both shaft‑driven and diesel‑engine driven prime movers.

Weaknesses

IP23 enclosure offers limited protection against dust and water ingress; additional sealing may be required in very harsh environments.
Fixed 400 V/50 Hz output limits use on vessels that standardise on 60 Hz or higher voltages without a transformer.
Physical size and weight are larger than some low‑speed, high‑power alternatives, impacting installation space.
Requires regular inspection of cooling and bearing systems to maintain performance.
Higher upfront cost compared with generic off‑the‑shelf generators.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose if: you need a reliable, high‑efficiency 315 kVA generator for 400 V/50 Hz auxiliary power on medium‑size vessels and have space for a standard marine alternator. Avoid if: the installation requires dust‑tight (IP54+) protection, operation at 60 Hz, or you are highly constrained by weight and volume.

Use Cases: Typically installed in the main engine room as an auxiliary generator supplying hotel loads, navigation equipment, and emergency power on commercial cargo ships and ferries. Also used as a dedicated generator for offshore supply vessels where a robust, medium‑power source is required.

Datasheet

Siemens Marine 1FJ4 315kVA 400V 60Hz Marine

1FJ4 315kVA 400V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (315 kVA) in a compact footprint suitable for large commercial vessels
Insulation class H provides robust thermal tolerance and long service life
Siemens brand reputation ensures strong after‑sales support and spare‑parts availability
Four‑pole design delivers stable 60 Hz frequency with low vibration
IP23 enclosure meets typical shipboard environmental requirements while allowing easy maintenance access

Weaknesses

IP23 protection is only splash‑proof; not suitable for harsh, wet locations that require higher ingress rating (e.g., IP55)
Fixed 400 V/60 Hz output may limit compatibility with vessels standardized on 440 V or 50 Hz systems
Brushless designs can be more complex to service if internal faults occur
Initial acquisition cost is generally higher than generic off‑brand units

Typical Vessels: Cruise shipContainer vesselTankerBulk carrierOffshore supply vesselLNG carrier

Certifications: IMO D-2

Decision Guide: Choose if you need a proven, high‑output auxiliary generator that operates at 400 V/60 Hz, require Siemens global support, and the installation environment meets IP23 standards. Avoid if your vessel runs on 50 Hz or needs a higher ingress protection rating for exposed locations.

Use Cases: Typically installed as the main auxiliary generator supplying hotel load, cargo‑handling equipment, and emergency power on large commercial ships; also used in dedicated emergency generator sets where rapid start‑up and reliability are critical.

Datasheet

Siemens Marine 1FJ4 315kVA 440V 50Hz Marine

1FJ4 315kVA 440V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and low maintenance thanks to brushless construction
Insulation class H allows operation at elevated temperatures
Compact, integrated design suitable for medium‑size auxiliary power rooms
Four‑pole configuration provides stable voltage and frequency output
IP23 enclosure offers protection against dust and limited water spray

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; may need additional shielding in wet areas
Fixed 440 V/50 Hz output may require transformers for vessels using other standards (e.g., 60 Hz or different voltages)
315 kVA may be insufficient as a single source on larger ships, requiring multiple units
No built‑in redundancy; failure of the coupled diesel engine disables power

Typical Vessels: Medium‑size tankersContainer vessels (up to ~5,000 GT)Bulk carriersOffshore supply shipsFerries and cruise ship auxiliary plants

Certifications: DNV

Decision Guide: Choose if you need a reliable, medium‑power auxiliary generator with brushless technology and high temperature tolerance for vessels that operate on 440 V/50 Hz systems. Avoid if the installation requires higher IP protection, different voltage/frequency standards, or a single source capable of supplying >315 kVA.

Use Cases: Typically installed as part of an auxiliary power plant to supply hotel loads, navigation equipment, and emergency generators on medium‑size commercial vessels; also used in standby/emergency configurations where redundancy is provided by multiple identical units.

Datasheet

Siemens Marine 1FJ4 315kVA 440V 60Hz Marine

1FJ4 315kVA 440V 60Hz Marine unverified

· diesel‑driven alternator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal endurance with Class H insulation allowing robust operation under load spikes
Compact 4‑pole construction reduces footprint compared to larger multi‑pole units
Siemens control electronics provide precise voltage regulation and built‑in diagnostics
IP23 enclosure is adequate for typical deck‑house installations while keeping cost lower than fully sealed enclosures

Weaknesses

IP23 protection does not guard against heavy spray or dust; additional shielding may be required in harsh environments
Maximum output of 315 kVA limits use on vessels with larger hotel‑load demands
Weight and mounting requirements can be substantial for small craft (exact figures unavailable)
May need a dedicated cooling system if installed in confined spaces

Typical Vessels: Offshore supply vesselFerryCoastal cargo shipCruise‑ship tenderMedium‑size fishing vessel

Decision Guide: Choose if you need a reliable, mid‑range auxiliary generator from a reputable OEM, have moderate environmental exposure and can accommodate the IP23 enclosure. Avoid if the vessel requires higher power output, stricter ingress protection (e.g., IP55/65), or ultra‑lightweight equipment.

Use Cases: Commonly installed as an auxiliary generator for hotel services, emergency power supply, and occasional propulsion support on offshore support vessels and medium‑size commercial ships where space is at a premium.

Datasheet

1FJ4 315kVA 690V 50Hz Marine unverified

· Four‑pole synchronous generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature zones typical of engine rooms.
Standard 690 V/50 Hz output matches most existing shipboard electrical distribution systems, simplifying integration.
Siemens’ proven marine reputation provides extensive after‑sales support and spare‑part availability.
Compact IP23 enclosure fits confined spaces while protecting against dust and spray.
Robust design suitable for continuous operation as a main or emergency auxiliary power source.

Weaknesses

IP23 rating offers limited protection; not suitable for areas with heavy water exposure or corrosive atmospheres.
Fixed‑speed (1500 rpm) operation limits efficiency when variable‑speed drives are desired.
Physical size and weight can be larger than newer high‑efficiency, compact generators.
If the unit uses brushed exciter technology, periodic brush maintenance is required.
No built‑in power‑electronic control; external converters may be needed for advanced load management.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable, medium‑size (315 kVA) generator that matches the standard 690 V/50 Hz shipboard bus and value Siemens’ global support network. Avoid if your vessel requires higher ingress protection (e.g., IP55), variable‑speed generation for fuel‑saving strategies, or ultra‑compact footprint.

Use Cases: Typically installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on vessels with a 690 V distribution system. Also used in retrofit projects where standard frequency and voltage compatibility are mandatory.

Datasheet

1FJ4 315kVA 690V 60Hz Marine unverified

· Synchronous marine generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) reduces fuel consumption for auxiliary loads.
IP23 enclosure provides protection against splashing water in engine rooms.
H‑class insulation allows operation at elevated temperatures typical of marine environments.
Integrated digital control panel simplifies monitoring and remote diagnostics.
Siemens worldwide service network ensures rapid spare‑part availability and technical support.

Weaknesses

Physical size and weight are relatively large for a 315 kVA unit, limiting installation in tight spaces.
Initial capital cost is higher than many non‑OEM alternatives.
Requires skilled personnel for routine maintenance of the diesel‑driven prime mover and generator bearings.
Limited low‑speed performance; not ideal for vessels that run generators at very low RPM for extended periods.
Standard IP23 rating does not protect against full immersion, so additional sealing may be needed in high‑spray areas.

Typical Vessels: TankerContainer shipBulk carrierCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if you need a reliable, high‑efficiency auxiliary generator with Siemens support on medium‑size vessels that have sufficient engine‑room space and can accommodate the higher upfront cost. Avoid if installation space is severely constrained, budget is primary concern, or the vessel operates predominantly at very low generator speeds where a different design may be more efficient.

Use Cases: Commonly installed as an auxiliary power source for hotel services, cargo handling equipment, and emergency generators on large commercial ships; also used in offshore support vessels to supply steady electrical power for dynamic positioning systems and deck machinery.

Datasheet

Siemens Marine 1FJ4 400kVA 400V 50Hz Marine

1FJ4 400kVA 400V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal rating (Class H) allows reliable operation in hot engine‑room environments.
Compact 4‑pole design provides good voltage regulation at 50 Hz shipboard standards.
IP23 enclosure protects against splashing water and dust, suitable for typical marine machinery spaces.
Siemens reputation for long‑life winding insulation and low maintenance intervals.

Weaknesses

Fixed 400 V output may require additional transformers for vessels that operate on different bus voltages.
IP23 rating does not protect against direct water ingress; unsuitable for exposed outdoor installations.
No built‑in emission control or dual‑fuel capability – requires separate exhaust treatment if needed.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise liner (auxiliary power)

Decision Guide: Choose if: you need a proven 400 kVA auxiliary generator with high temperature tolerance and a compact footprint for standard 400 V shipboard bus systems. Avoid if: the installation requires higher voltage, direct‑water protection (IP≥54), or integrated dual‑fuel emission controls.

Use Cases: Commonly installed as part of a twin‑generator set to supply hotel loads, cargo refrigeration, and emergency power on medium‑size merchant vessels; often paired with diesel engines in an automated generator control system.

Datasheet

1FJ4 400kVA 400V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation tolerates high ambient temperatures typical of engine rooms
Compact IP23 enclosure saves space while protecting against splashing water and dust
Brush‑less design reduces maintenance intervals and eliminates brush wear
Integrated control interface compatible with Siemens marine power management systems
Proven Siemens reliability and global after‑sales support

Weaknesses

Fixed 60 Hz output limits use on vessels that operate on 50 Hz grids
External cooling water system required, adding piping complexity
Physical size larger than some newer modular genset packages
Higher upfront capital cost compared with basic low‑cost alternatives
No built‑in exhaust after‑treatment; emissions depend on the prime mover

Typical Vessels: Cruise shipsContainer vesselsOffshore supply & support vesselsLNG carriers (hotel power)Naval auxiliaries

Decision Guide: Choose if: you need a robust 400 kVA service generator at 60 Hz, have space for an IP23‑rated unit, and value low‑maintenance brushless operation with Siemens support. Avoid if: the vessel requires 50 Hz power, has severe weight/space constraints, or seeks a lower‑cost, smaller modular solution.

Use Cases: Typically installed as the main service generator on large commercial vessels to supply hotel loads, emergency power, and auxiliary systems; also used as a standby unit in offshore platforms where continuous, high‑temperature tolerant power is critical.

Datasheet

1FJ4 400kVA 440V 50Hz Marine unverified

· brushless high‑speed alternator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 400 kVA in a relatively small footprint
Brush‑less design reduces routine maintenance and improves reliability
Integrated Siemens control system enables easy monitoring and remote diagnostics
Typical efficiency above 94 % lowers fuel consumption for auxiliary loads
IP23 enclosure provides protection against splash water while allowing easy access

Weaknesses

High rotational speed can generate more vibration and acoustic noise than low‑speed units
Requires precise cooling system design; fouling of the air‑cooler can affect performance
Limited to standard 50 Hz/60 Hz operation – not suitable for vessels needing variable frequency drives without additional equipment
Spare parts inventory may be less common in regions where low‑speed generators dominate

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a compact, high‑efficiency auxiliary generator with Siemens’ integrated control and low maintenance brushless design. Avoid if vessel vibration limits are extremely tight, or if you prefer a low‑speed, heavy‑duty unit with broader aftermarket support.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, emergency generators, and dynamic positioning support on medium‑to‑large merchant vessels where space is at a premium.

Datasheet

1FJ4 400kVA 440V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (400 kVA) suitable for medium‑size vessels
IP23 enclosure provides protection against splashing water and solid objects common on deck
Class H insulation allows operation at elevated temperatures, enhancing reliability in hot engine rooms
Four‑pole design ensures stable 60 Hz frequency under varying loads
Siemens global service network offers extensive spare parts availability and technical support

Weaknesses

IP23 rating is not dust‑tight; additional sealing may be required for very harsh environments
Fixed 440 V output may need transformers or converters on vessels with different voltage standards
Initial capital cost can be higher than comparable generators from lower‑priced manufacturers
Maintenance intervals typical of oil‑lubricated diesel generators (oil change, bearing inspection) add operational downtime

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise liner (auxiliary power)

Decision Guide: Choose if: you need a reliable 400 kVA marine generator with proven Siemens engineering, robust enclosure for deck‑level installation, and worldwide support. Avoid if: the vessel operates on a non‑440 V system without ready step‑up/step‑down equipment, or budget constraints prioritize lower upfront cost over long‑term reliability.

Use Cases: The 1FJ4 is typically installed as the main propulsion auxiliary generator on medium‑size cargo ships and offshore support vessels, providing continuous shipboard power for hotel loads, navigation systems, and emergency backup. It is also used in cruise ships as an auxiliary unit to supplement larger prime generators during peak demand periods.

Datasheet

1FJ4 400kVA 690V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency operation (≈95%) reduces fuel consumption for auxiliary power.
Robust IP23 enclosure and Class H insulation tolerate harsh marine environments and high temperatures.
Integrated Siemens control and monitoring system simplifies installation and maintenance.
Proven reliability with extensive global service network from Siemens Marine.
Four‑pole design provides stable voltage and frequency output.

Weaknesses

Physical size and weight are larger than newer compact modular generators, limiting fit on space‑constrained vessels.
Standard 690 V output may require additional transformers for ships using higher system voltages.
IP23 enclosure requires dedicated ventilation to prevent overheating in confined engine rooms.
Initial procurement cost is typically higher than comparable generic brands.
Spare parts lead time can be longer if not stocked locally.

Typical Vessels: Container ShipCruise ShipFerryOffshore Supply VesselBulk Carrier

Decision Guide: Choose if: you need a reliable 400 kVA auxiliary power source, operate in high‑temperature marine environments, and value Siemens after‑sales support. Avoid if: vessel space is extremely limited, the ship’s electrical system uses voltages above 690 V without ready transformer solutions, or budget constraints prioritize lower upfront cost over long‑term reliability.

Use Cases: The 1FJ4 is typically installed as a main auxiliary generator on medium‑to‑large commercial vessels to supply hotel loads, cargo handling equipment, and emergency power (in conjunction with smaller dedicated emergency generators). It is also used on offshore support ships where robust performance under continuous operation is required.

Datasheet

1FJ4 400kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for medium‑size vessels
H‑class insulation provides good thermal endurance
Four‑pole construction gives stable frequency output at 60 Hz
IP23 enclosure offers protection against splashing water and dust

Weaknesses

Designed for 60 Hz systems only – not suitable for 50 Hz fleets
Requires specialized Siemens spares and service support
Initial acquisition cost is higher than some generic alternatives

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrier (60 Hz market)Ferry

Decision Guide: Choose if: you need a reliable 400 kVA auxiliary generator for a 60 Hz, 690 V shipboard electrical system and value Siemens service network. Avoid if: the vessel operates on a 50 Hz grid or budget constraints favor lower‑cost generic units.

Use Cases: Provides hotel‑load power, supports propulsion auxiliaries, and serves as an emergency generator on vessels that require robust, high‑capacity auxiliary generation in 60 Hz regions.

Datasheet

Siemens Marine 1FJ4 500kVA 400V 50Hz Marine

1FJ4 500kVA 400V 50Hz Marine unverified

· diesel synchronous generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Siemens reliability and service network
Compact IP23 enclosure suitable for typical engine rooms
Class H insulation allows operation at higher temperatures
Four‑pole design provides stable frequency output
Standard 500 kVA rating matches many medium‑size vessel power plans

Weaknesses

IP23 protection only guards against splashing, not dust or heavy water ingress
Fixed 400 V output may require additional transformers for vessels needing higher bus voltages
Weight and footprint can be significant compared with newer lightweight gensets
Emission standards depend on the specific diesel engine; older versions may not meet Tier III requirements

Typical Vessels: General cargo shipsOffshore supply vesselsFerriesCruise liners (auxiliary power)Small tankers and bulk carriers

Decision Guide: Choose if: you need a reliable 500 kVA generator with proven Siemens support, have space for an IP23‑rated unit, and operate on 400 V bus systems. Avoid if: your vessel requires higher voltage output, stricter emission Tier III compliance, or a fully sealed (IP66/68) enclosure.

Use Cases: Typically installed as the main propulsion auxiliary generator or as an emergency power source on medium‑size commercial vessels where space is limited and proven reliability is paramount.

Datasheet

1FJ4 500kVA 400V 60Hz Marine unverified

· four‑pole marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for medium‑size vessel auxiliaries
Class H insulation allows operation in elevated ambient temperatures
Robust IP23 enclosure provides protection against splashing water and dust
Siemens brand reputation ensures wide service network and spare parts availability
Four‑pole design delivers stable frequency with lower vibration

Weaknesses

IP23 rating does not protect against full immersion; unsuitable for harsh wet‑deck installations
Fixed 400 V/60 Hz output limits use on vessels standardized on 50 Hz systems
May require dedicated cooling system integration, adding installation complexity
Initial capital cost is higher than some generic OEM alternatives
Weight and footprint are typical of a 500 kVA unit, which can be restrictive in space‑constrained engine rooms

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore support vesselFerry

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 500 kVA auxiliary generator with proven Siemens service support, operate on a 400 V/60 Hz electrical system, and require high‑temperature insulation. Avoid if your vessel runs on 50 Hz, demands a fully sealed (IP66+) unit for exposed deck placement, or has severe weight/space constraints that favor smaller packages.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, emergency power, and propulsion start‑up on medium‑to‑large commercial vessels. Also used in standby configurations where rapid response and high reliability are critical.

Datasheet

Siemens Marine 1FJ4 500kVA 440V 50Hz Marine

1FJ4 500kVA 440V 50Hz Marine unverified

· diesel-driven synchronous generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Siemens reliability and global after‑sales support network
Class H insulation allows operation in high ambient temperature zones
Four‑pole construction provides stable 1500 rpm speed at 50 Hz, reducing vibration
Modular design simplifies installation and routine maintenance
Integrated control panel compatible with common ship automation systems

Weaknesses

IP23 enclosure offers limited protection against splashing water; additional shielding may be required in harsh marine environments
Physical size and weight are substantial, demanding dedicated generator room space
Higher upfront cost compared with many regional manufacturers
Standard model does not include built‑in acoustic silencing – external mufflers are needed for noise‑sensitive vessels
Limited flexibility for low‑speed diesel engines without a separate coupling arrangement

Typical Vessels: Container ships (up to ~10,000 GT)Bulk carriersOffshore supply vesselsFerries and Ro‑Ro vesselsCruise ships (mid‑size)

Decision Guide: Choose if you need a robust 500 kVA auxiliary generator with Siemens service backing, high temperature tolerance, and a proven synchronous design. Avoid if the vessel operates in very wet or corrosive environments where a higher IP rating is mandatory, or if budget constraints favor lower‑cost alternatives.

Use Cases: Typically installed as the primary auxiliary power source on medium‑sized merchant vessels, providing electricity for hotel loads, cargo handling equipment, and emergency systems. Also used in shore‑power generation units and as backup power for dynamic positioning plants where reliable, stable output is critical.

Datasheet

1FJ4 500kVA 440V 60Hz Marine unverified

· 4‑pole synchronous generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides excellent thermal tolerance and reliability
Siemens reputation for robust engineering and global support network
Standard 60 Hz frequency matches most US and international vessel electrical systems
Compact IP23 enclosure suitable for typical engine‑room installations
500 kVA rating fits a wide range of medium‑size commercial vessels

Weaknesses

IP23 protection is limited against water ingress; additional sealing may be required in harsh marine environments
440 V output may need conversion for ships that operate on different voltage levels
4‑pole low‑speed design results in a larger physical size compared with high‑speed alternatives
Potentially higher acquisition and spare‑part cost due to Siemens branding

Typical Vessels: Container ship (mid‑size)Cruise ferryOffshore supply vesselNaval auxiliaryCoastal bulk carrier

Decision Guide: Choose if you need a proven, high‑temperature tolerant generator from a globally supported OEM for medium‑capacity auxiliary power and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (e.g., IP55) or if space/weight constraints favor a more compact high‑speed unit.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size commercial vessels, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. Also used as a standby generator in naval support ships where reliability under high temperature conditions is critical.

Datasheet

1FJ4 500kVA 690V 50Hz Marine unverified

· synchronous alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) provides excellent temperature tolerance and longevity.
Compact 4‑pole design delivers 1500 rpm operation at 50 Hz, fitting standard marine engine speeds.
Siemens brand reputation ensures proven reliability and worldwide service support.
IP23 enclosure offers protection against dust and limited water spray typical of many engine rooms.
Standard 690 V output matches common three‑phase shipboard distribution systems.

Weaknesses

IP23 rating may be insufficient for areas exposed to heavy sea spray or washdown; additional shielding can be required.
Brush‑type rotor (if equipped) entails periodic maintenance and replacement costs.
Higher upfront cost compared with generic low‑cost generators of similar rating.
Requires 690 V three‑phase supply infrastructure, limiting retrofit flexibility on vessels with different voltage standards.
Cooling system must be properly sized; inadequate cooling can reduce efficiency under high load.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore support vessel

Decision Guide: Choose if: you need a reliable 500 kVA auxiliary generator with Siemens global support, high thermal endurance (class H), and the vessel already uses a 690 V three‑phase system. Avoid if: budget constraints dominate, the installation area requires higher ingress protection than IP23, or the ship operates on a different voltage standard.

Use Cases: The 1FJ4 is typically installed as an auxiliary generator to supply hotel loads, emergency power, and start‑up power for main propulsion engines on medium‑to‑large commercial vessels. It is also used in redundancy configurations where multiple generators share the load.

Datasheet

Siemens Marine 1FJ4 500kVA 690V 60Hz Marine

1FJ4 500kVA 690V 60Hz Marine unverified

· brushless marine alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) allows operation in elevated temperature zones typical of engine rooms.
Brushless design reduces maintenance intervals and eliminates brush wear issues.
Compact IP23 enclosure saves space while providing adequate protection against splashing water.
Four‑pole construction delivers stable voltage and frequency under varying load conditions.
Integrated control interface compatible with common ship automation systems.

Weaknesses

IP23 rating does not protect against heavy spray or immersion, limiting placement to well‑ventilated dry zones.
Fixed 690 V output may require additional step‑up/step‑down transformers for vessels standardized on other voltages.
Weight and mounting dimensions are typical of medium‑size generators; may be restrictive on very space‑constrained platforms.
Cooling relies on forced air; performance can degrade in high ambient temperature without adequate ventilation.

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer ships (mid‑size)Product tankers

Decision Guide: Choose if you need a reliable 500 kVA service generator with low maintenance brushless technology, high temperature tolerance and a compact footprint for medium‑sized vessels. Avoid if your installation requires fully sealed (IP≥44) equipment, higher voltage output without additional conversion gear, or extreme weight/space constraints.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, cargo handling equipment, and emergency generators on passenger ferries and offshore support ships, where dependable continuous power and ease of maintenance are critical.

Datasheet

1FJ4 630kVA 400V 50Hz Marine unverified

· synchronous alternator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (630 kVA) suitable for medium‑size commercial vessels
Insulation class H provides excellent fire resistance and thermal endurance
Four‑pole design delivers stable frequency with lower rotational speed, improving fuel efficiency of the prime mover
Siemens global service network ensures spare parts availability and technical support
IP23 enclosure meets standard marine environmental protection requirements

Weaknesses

Physical size and weight demand considerable engine room space
IP23 rating offers limited protection against water ingress compared with higher IP codes
May require an external cooling system in hot climates
Initial acquisition cost is typically higher than generic off‑brand units
Specific vibration isolation requirements may increase installation complexity

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a reliable 630 kVA auxiliary generator with high fire‑resistant insulation, Siemens after‑sales support, and can accommodate its size and IP23 protection level. Avoid if vessel space is at a premium, higher ingress protection (IP44 or above) is required, or budget constraints favor lower‑cost alternatives.

Use Cases: Commonly installed as the main auxiliary generator for hotel loads, cargo handling equipment, and emergency power on medium to large commercial ships; also used in offshore platforms where robust, fire‑safe generation is mandatory.

Datasheet

1FJ4 630kVA 400V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (630 kVA) suitable for large auxiliary loads on US‑flag vessels
Class H insulation provides thermal resilience up to 180 °C, allowing operation in hot engine rooms
Siemens reputation for reliability and long service intervals
Standard 400 V/60 Hz rating matches the majority of North American shipboard electrical systems
Modular design simplifies installation and maintenance

Weaknesses

IP23 enclosure offers only limited protection against water ingress; additional shielding may be required in harsh marine environments
No integrated control package – requires external governor/monitoring system
Designed for 60 Hz operation only, unsuitable for vessels that standardise on 50 Hz
Physical size and weight are typical of high‑power alternators, which can limit placement in space‑constrained engine rooms

Typical Vessels: Tanker (US‑flag)Container shipCruise vesselOffshore supply vesselRo‑Ro ferry

Decision Guide: Choose if you need a proven 630 kVA, 400 V/60 Hz marine alternator with strong thermal capability and are able to provide additional environmental protection for the IP23 enclosure. Avoid if your vessel operates on 50 Hz, requires a fully sealed (IP55+) unit, or demands an all‑in‑one generator set with integrated control electronics.

Use Cases: Typically installed as auxiliary power generation for hotel loads, cargo handling equipment, and emergency power on large commercial vessels that follow US 60 Hz standards. Also used in dedicated emergency generator rooms where high reliability is essential.

Datasheet

1FJ4 630kVA 440V 50Hz Marine unverified

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (630 kVA) suitable for large vessel hotel loads
Class H insulation allows operation at elevated temperatures
Proven Siemens reliability and long service intervals
Four‑pole design provides stable voltage and frequency under varying load
IP23 enclosure protects against dust and accidental contact, suitable for covered deck installations

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for exposed outdoor mounting
Designed for 50 Hz systems only – unsuitable where 60 Hz is required
Physical size and weight typical of high‑power generators may limit installation in space‑constrained vessels
Requires regular maintenance of the coupled diesel engine (if applicable) and brush system (if brushed)
No built‑in redundancy; a single unit failure impacts full auxiliary power

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose this generator when a proven, high‑capacity 630 kVA source is needed for 50 Hz vessels with covered deck installation and where Class H insulation benefits thermal performance. Avoid if the installation requires higher ingress protection (e.g., IP55), operation on 60 Hz grids, or very limited space.

Use Cases: Main auxiliary power plant supplying hotel loads, cargo handling equipment, and emergency power on large commercial ships; also used on offshore platforms where robust, high‑temperature capable generators are required.

Datasheet

Siemens Marine 1FJ4 630kVA 440V 60Hz Marine

1FJ4 630kVA 440V 60Hz Marine unverified

· brushless marine alternator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (630 kVA) suitable for large vessel auxiliary loads
Brush‑less design reduces maintenance intervals and downtime
H‑class insulation allows operation in harsh thermal environments
IP23 enclosure provides protection against splashing water typical of engine rooms
Four‑pole construction matches 1800 rpm diesel prime movers common on 60 Hz ships

Weaknesses

Relatively large physical footprint and weight compared with lower‑rated units
Requires dedicated forced‑air cooling system to meet IP23 rating
Fixed 440 V output limits flexibility for vessels standardising on other voltages
Designed for 60 Hz; not directly compatible with 50 Hz installations without speed change

Typical Vessels: VLCC / TankerContainer shipCruise linerOffshore supply vesselRo‑Ro ferry

Decision Guide: Choose if you need a robust, high‑capacity auxiliary generator for large 60 Hz vessels with space for a 440 V system and can accommodate the required cooling infrastructure. Avoid if vessel size is constrained, voltage flexibility is required, or the ship operates on a 50 Hz power grid.

Use Cases: Commonly installed as part of the main auxiliary generator set on large commercial ships, providing continuous power for hotel services, cargo handling equipment, and emergency supply; also used in standby/emergency configurations where reliability is critical.

Datasheet

1FJ4 630kVA 690V 50Hz Marine unverified

· Four‑pole synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 630 kVA suitable for large auxiliary loads
Class H insulation allows reliable operation in elevated temperature zones
Siemens brand reputation provides extensive global support and spare parts availability
Four‑pole design delivers stable voltage and frequency at 50 Hz
IP23 enclosure is adequate for protected deck installations

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for harsh exposure without additional shielding
May require external sound attenuation measures to meet crew comfort standards
Weight and footprint are relatively large for the power class, impacting installation space
Emission compliance depends on the prime mover; older diesel engines may need retro‑fit to meet current IMO Tier II/III limits
Fixed 690 V output may necessitate additional transformers for vessels operating at different bus voltages

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑capacity auxiliary generator with strong manufacturer support and can accommodate an IP23 protected installation. Avoid if the vessel operates in severe weather exposure requiring higher ingress protection or if space/weight constraints are critical.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, emergency power, and propulsion start‑up on large commercial vessels; also used in offshore platforms where reliable mid‑size generation is required.

Datasheet

Siemens Marine 1FJ4 630kVA 690V 60Hz Marine

1FJ4 630kVA 690V 60Hz Marine unverified

· brushless four-pole alternator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 630 kVA in a relatively compact footprint
Robust IP23 enclosure suitable for typical deck environments
Insulation class H allows operation at elevated temperatures (up to ~180 °C)
Four‑pole design provides low vibration and stable 60 Hz output
Siemens global support network and proven reliability in marine service

Weaknesses

Requires an external prime mover (diesel engine) – not a complete genset package
IP23 offers limited protection against water ingress; additional shielding may be needed in harsh weather
Physical size and weight are larger than some newer compact alternatives
Higher upfront cost compared with generic off‑brand alternators

Typical Vessels: Cruise shipContainer vesselBulk carrierTankerOffshore supply vesselFerry

Decision Guide: Choose if you need a high‑output, proven alternator with Siemens support for vessels operating on 690 V three‑phase systems and can accommodate the IP23 enclosure. Avoid if space is extremely limited, higher ingress protection (e.g., IP55) is required, or budget constraints favor lower‑cost generic units.

Use Cases: Commonly installed as part of a diesel‑generator set to supply hotel loads on cruise ships, auxiliary power for cargo handling equipment on container vessels, and emergency power on tankers and offshore supply ships.

Datasheet

Siemens Marine 1FJ4 800kVA 400V 50Hz Marine

1FJ4 800kVA 400V 50Hz Marine unverified

· four‑pole synchronous generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈94 %) thanks to H‑class insulation and optimized winding design
Robust IP23 enclosure provides good protection against spray and dust in marine environments
Integrated Siemens control package (SISHIP) enables remote monitoring and fault diagnostics
Proven reliability with a long service life under continuous operation
Standard 400 V/50 Hz output matches most shipboard distribution systems

Weaknesses

Relatively large footprint and weight compared with newer compact diesel‑electric units
Requires forced air cooling; ventilation space must be ensured in engine rooms
Fixed voltage/frequency – not suitable for vessels needing dual‑frequency or higher voltage options
Maintenance demands skilled personnel familiar with Siemens marine alternators
No built‑in exhaust after‑treatment; emissions depend on the prime mover

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑output 800 kVA generator that integrates with Siemens control systems and fits standard 400 V/50 Hz shipboard grids. Avoid if: the installation space is limited, you require dual‑frequency or higher voltage output, or you prefer a lighter, modular diesel‑electric package.

Use Cases: The 1FJ4 is typically installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on large ocean‑going vessels. It is also used in redundancy schemes where multiple generators share the load to ensure continuous operation during propulsion engine outages.

Datasheet

Siemens Marine 1FJ4 800kVA 400V 60Hz Marine

1FJ4 800kVA 400V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) suitable for large vessel auxiliary loads
Class H insulation allows operation at elevated temperatures, enhancing reliability in hot climates
Siemens reputation for durability and low maintenance intervals
Modular design simplifies installation and future upgrades
Standard 400 V output matches common shipboard distribution systems in 60 Hz markets

Weaknesses

IP23 enclosure provides limited protection against water ingress; additional shielding may be required in harsh marine environments
Fixed 400 V rating may necessitate step‑up/down transformers for vessels using different voltage standards
Physical size and weight are substantial, impacting space‑critical installations
Spare parts logistics can be slower outside of major Siemens service hubs
Designed for 60 Hz operation only; not suitable for 50 Hz regions without frequency conversion

Typical Vessels: Container shipsCrude oil tankersBulk carriersCruise linersOffshore supply vessels

Certifications: ABSDNV-GL

Decision Guide: Choose if you need a proven, high‑capacity generator for 60 Hz vessels operating in warm climates and can accommodate the IP23 enclosure with additional protection. Avoid if your vessel requires 50 Hz power, higher voltage levels, or an enclosure rated beyond IP23 for extreme exposure.

Use Cases: Typically installed as the main auxiliary generator on large commercial ships to supply propulsion auxiliaries, hotel loads, and emergency power; also used in dedicated emergency generator sets where high reliability is critical.

Datasheet

1FJ4 800kVA 440V 50Hz Marine unverified

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 800 kVA in a relatively compact footprint suitable for large vessels.
Class H insulation allows operation at elevated temperatures, improving reliability under heavy load.
Siemens proven marine heritage provides robust mechanical design and long service life.
Standard 440 V/50 Hz output matches most international shipboard electrical systems.
IP23 enclosure offers protection against splashing water while keeping the unit accessible for maintenance.

Weaknesses

IP23 rating does not protect against dust or high‑pressure water jets; unsuitable for harsh external environments.
Designed only for 50 Hz operation – not directly compatible with vessels requiring 60 Hz power.
Large physical size and weight may limit installation in space‑constrained engine rooms.
Requires a dedicated cooling system (air‑water) which adds to auxiliary plant complexity.
Higher initial capital cost compared with some low‑cost generic alternators.

Typical Vessels: VLCC / TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable, high‑capacity auxiliary generator for large vessels operating on 50 Hz systems and can accommodate an IP23 enclosure with dedicated cooling. Avoid if the installation demands higher ingress protection (e.g., IP55), 60 Hz power, or strict weight/space limits.

Use Cases: Commonly installed as the main auxiliary generator set on tankers, container ships and cruise vessels to supply hotel loads, cargo handling equipment, and emergency power. Also used in offshore support vessels where a robust, high‑temperature capable alternator is required for continuous operation.

Datasheet

1FJ4 800kVA 440V 60Hz Marine unverified

· marine synchronous generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 800 kVA suitable for large auxiliary loads
Class‑H insulation permits operation at elevated temperatures, enhancing reliability
Four‑pole design provides stable frequency control for 60 Hz systems
Siemens reputation for durability and worldwide service support
Modular construction simplifies installation and routine maintenance

Weaknesses

IP23 enclosure offers limited protection against water ingress; not ideal for harsh spray zones
Physical size and weight typical of high‑power generators may limit placement on smaller vessels
Fixed 440 V output may require additional transformers for vessels using different voltage standards
Designed for 60 Hz operation only, unsuitable for regions or fleets standardising on 50 Hz
Integration often requires Siemens‑specific control and monitoring systems

Typical Vessels: Cruise shipsOffshore supply vesselsLNG carriersLarge container shipsNaval auxiliaries

Decision Guide: Choose if you need a proven 800 kVA, 60 Hz generator with strong temperature tolerance and can accommodate an IP23 enclosure on a vessel operating primarily in moderate marine environments. Avoid if the installation demands higher ingress protection (e.g., IP55/68), must run on 50 Hz, or space/weight constraints are critical.

Use Cases: Commonly installed as main auxiliary generators for hotel‑load power on cruise liners, emergency power sets on offshore platforms, and high‑capacity support generation on US‑flagged vessels requiring 60 Hz supply.

Datasheet

1FJ4 800kVA 690V 50Hz Marine unverified

· brushless synchronous marine generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) suitable for large vessel auxiliaries
Siemens proven reliability and long service intervals
H‑class insulation allows operation up to 180 °C, enhancing durability in hot engine rooms
Integrated Siemens control system simplifies monitoring and fault diagnostics
Standard IP23 enclosure provides dust protection and is compatible with typical engine‑room layouts

Weaknesses

Fixed speed (1500/1800 rpm) limits fuel‑efficiency optimisation at part load compared with variable‑speed gensets
Large footprint and weight may be restrictive on vessels with limited machinery space
IP23 rating does not protect against water ingress, requiring careful placement in dry zones
Designed for 50 Hz markets only; unsuitable where 60 Hz is required without conversion
Requires high‑quality marine diesel fuel to meet emission limits

Typical Vessels: Crude Oil TankerContainer ShipBulk CarrierCruise VesselOffshore Supply Vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a high‑capacity, proven auxiliary generator for large vessels operating on 50 Hz systems and have sufficient engine‑room space. Avoid if vessel size limits machinery volume, you require variable‑speed fuel optimisation, or the installation must meet higher ingress protection (IP44+) standards.

Use Cases: Commonly installed as a main auxiliary power source on newbuild tankers, container ships and cruise liners to supply hotel loads, cargo handling equipment and emergency systems. Also used on offshore support vessels where reliable, continuous power is critical for dynamic positioning and crew amenities.

Datasheet

1FJ4 800kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈96%) and low fuel consumption when paired with a diesel engine
Robust class H insulation suitable for high temperature marine environments
Integrated monitoring and diagnostics compatible with Siemens Power Management System
Proven reliability on large commercial vessels with extensive field service network
Standard 4‑pole design provides stable voltage and frequency under varying loads

Weaknesses

Large physical footprint and weight require substantial engine room space
Higher upfront capital cost compared with some OEM alternatives
IP23 enclosure limits protection against water ingress; not suitable for exposed deck installations
Fixed 60 Hz output may be unsuitable for vessels requiring 50 Hz or dual‑frequency systems
Spare parts inventory can be limited in remote ports, affecting lead times

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Certifications: IMO D‑2DNV GL Type Approval

Decision Guide: Choose if: you need a proven, high‑output generator for large commercial vessels, value Siemens after‑sales support and integrated monitoring, and have sufficient engine‑room space. Avoid if: budget constraints are primary, the installation area is tight, or a dual‑frequency (50/60 Hz) capability is required.

Use Cases: The 1FJ4 is typically installed as part of a diesel‑engine driven genset to supply main auxiliary power for propulsion support, hotel load, cargo handling equipment, and emergency systems on deep‑sea carriers and cruise ships. It is often paired with Siemens control consoles for real‑time performance monitoring.

Datasheet

1FJ4 1000kVA 400V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for 1 MVA applications on large vessels
H‑class insulation provides excellent thermal endurance and reliability
IP23 enclosure offers protection against splashing water and dust in shipboard environments
Four‑pole design ensures stable 50 Hz output with low vibration
Proven Siemens engineering reputation for long service intervals

Weaknesses

Fixed 400 V output may require step‑up/down transformers for vessels using different bus voltages
IP23 rating does not protect against heavy water ingress; additional sealing may be needed in harsh wet areas
Size and weight are comparable to other 1 MVA marine alternators, limiting installation flexibility on space‑constrained ships
Requires a compatible diesel or gas prime mover; not a standalone generator set

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if you need a reliable 1 MVA, 400 V, 50 Hz marine alternator with robust H‑class insulation and can accommodate its size within the auxiliary engine room. Avoid if your vessel operates on a different voltage bus, requires higher ingress protection (IP≥44), or has severe space/weight constraints.

Use Cases: Typically installed as part of an auxiliary power plant on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency power; also used in shore‑power conversion systems where stable 400 V output is required.

Datasheet

1FJ4 1000kVA 400V 60Hz Marine unverified

· four‑pole synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (1000 kVA) suitable for large vessel power plants
Class‑H insulation allows operation at elevated temperatures, improving reliability in harsh marine environments
IP23 enclosure provides protection against solid objects and limited water ingress typical of shipboard installations
Siemens’ global service network ensures rapid spare‑part availability and technical support
Modular design facilitates on‑site maintenance and quick replacement of major components

Weaknesses

Physical size and weight require significant engine‑room space, limiting fit on smaller vessels
IP23 rating does not protect against fine dust or heavy splashing; additional sealing may be needed in very wet areas
Designed for 60 Hz operation only – not directly suitable for regions or vessels standardized on 50 Hz without redesign
Higher upfront capital cost compared with some lower‑spec alternatives
Four‑pole construction results in a larger footprint than compact two‑pole designs used for low‑power applications

Typical Vessels: Container shipBulk carrierCruise linerOffshore support vesselRo‑Ro ferry

Certifications: IMO D‑2ABS (American Bureau of Shipping) approvalDNV GL classification

Decision Guide: Choose if you need a proven, high‑capacity 1000 kVA generator for 400 V/60 Hz shipboard power and have sufficient engine‑room space; the Siemens service network and class‑H insulation add reliability on long voyages. Avoid if vessel size constraints prevent installation of a four‑pole unit, if you require 50 Hz operation, or if budget limits preclude higher‑cost equipment.

Use Cases: Commonly installed as part of the main auxiliary power plant on large merchant vessels, providing electricity for cargo handling gear, hotel services, and emergency power. Also used on cruise ships for hotel load support and on offshore supply vessels where robust, high‑temperature operation is critical.

Datasheet

1FJ4 1000kVA 440V 50Hz Marine unverified

· four-pole synchronous generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1000 kVA suitable for large vessel hotel loads
Class‑H insulation allows operation at elevated temperatures, enhancing reliability
IP23 enclosure provides protection against dust and limited moisture in typical engine rooms
Siemens global support network and proven field service record
Standardized 440 V/50 Hz output matches most existing shipboard electrical systems

Weaknesses

IP23 rating does not protect against direct water spray; additional sealing may be required in harsh environments
Fixed 440 V output may need step‑up transformers for vessels that operate on higher voltage distribution systems
Physical size and weight are substantial, limiting installation in space‑constrained engine rooms
No built‑in parallel operation feature; multiple units require external synchronization equipment

Typical Vessels: Container shipCruise linerRo‑Ro ferryOffshore supply vesselBulk carrier

Certifications: DNVABS

Decision Guide: Choose if you need a reliable 1000 kVA auxiliary generator at 440 V/50 Hz, value Siemens service support, and require DNV or ABS type approval. Avoid if the vessel demands higher voltage distribution, has severe exposure to water spray that exceeds IP23 protection, or requires a compact generator for very limited spaces.

Use Cases: Typically installed as main auxiliary power source on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency power; also used in standby/emergency generator sets where high reliability is essential.

Datasheet

1FJ4 1000kVA 440V 60Hz Marine unverified

· marine synchronous generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1000 kVA suitable for large vessel auxiliary power needs
Class H insulation permits operation in high‑temperature engine rooms
Four‑pole design delivers smooth, stable frequency and reduced vibration
IP23 enclosure provides protection against splashing water and dust while allowing easy access for maintenance
Siemens brand reputation offers extensive global support and spare parts availability

Weaknesses

Enclosure rating IP23 is not fully sealed; unsuitable for harsh wet‑spray environments without additional protection
Designed for 60 Hz operation only, limiting use on vessels that require 50 Hz power systems
Physical size and weight are considerable, requiring ample engine‑room space
Standard brushed rotor (if applicable) entails periodic brush inspection and replacement
No integrated redundancy; a separate backup unit is needed for critical applications

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 1000 kVA, 60 Hz generator for large merchant or offshore vessels and have space for an IP23‑rated unit with Siemens after‑sales support. Avoid if the vessel operates on a 50 Hz system, requires higher ingress protection (e.g., IP55), or has strict weight/space constraints.

Use Cases: Commonly installed as a main auxiliary generator to supply shipboard hotel loads, cargo handling equipment, and emergency power on large commercial vessels; also used in offshore platforms where high‑temperature tolerance is required.

Datasheet

1FJ4 1000kVA 690V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MVA) in a compact footprint for its class
Class H insulation allows operation up to 180 °C, enhancing reliability in hot climates
IP23 enclosure provides protection against splashing water while allowing easy access for maintenance
Integrated Siemens control and monitoring system simplifies start‑up, load sharing and diagnostics
Widely accepted by classification societies, facilitating type approval and class surveys

Weaknesses

IP23 rating may be insufficient for harsh offshore environments that require higher ingress protection (e.g., IP54)
Initial capital cost is higher than many generic OEM alternatives
Requires skilled personnel for routine maintenance of brushless exciter and cooling system
Fixed voltage/frequency (690 V, 50 Hz) limits flexibility for vessels with dual‑frequency power systems

Typical Vessels: Container shipCruise linerLNG carrierOil tankerBulk carrierOffshore supply vessel

Certifications: ABS Type ApprovalDNV‑GL Type ApprovalLR (Lloyd's Register) Classification

Decision Guide: Choose if you need a proven, high‑output generator with Siemens support for vessels that operate on a 690 V, 50 Hz bus and can accommodate an IP23 enclosure. Avoid if space is extremely limited, budget constraints preclude premium pricing, or the installation environment demands higher ingress protection (IP54 or above).

Use Cases: Typically installed as the main auxiliary generator supplying ship service power, hotel loads on cruise ships, cargo‑handling equipment on container vessels, and as an emergency power source on tankers and bulk carriers.

Datasheet

1FJ4 1000kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation allows operation at higher temperatures, improving reliability in hot engine rooms.
Four‑pole design provides stable frequency output with reduced vibration compared to two‑pole units.
Siemens brand support and proven field service network for marine applications.
Compact IP23 enclosure suitable for typical shipboard installation spaces.

Weaknesses

IP23 rating offers limited protection against water ingress; additional shielding may be required in harsh environments.
Single‑frequency (60 Hz) only – not suitable where dual‑frequency (50/60 Hz) capability is needed.
Relatively heavy for its power class compared with some modern lightweight aluminum alternators (exact weight unknown).
Higher upfront cost typical of Siemens OEM equipment.

Typical Vessels: Container shipsCruise linersOffshore supply vesselsFerriesBulk carriers

Decision Guide: Choose if you need a reliable 1 MVA auxiliary generator with Siemens after‑sales support, class H insulation for high‑temperature rooms, and standard 690 V/60 Hz output. Avoid if the installation requires higher ingress protection (e.g., IP55), dual‑frequency operation, or the lightest possible weight solution.

Use Cases: Commonly installed as a main auxiliary generator on medium‑size cargo vessels and passenger ships to supply hotel loads, deck machinery, and emergency power; also used on offshore support vessels where robust, high‑temperature performance is critical.

Datasheet

Siemens Marine 1FJ4 1250kVA 400V 50Hz Marine

1FJ4 1250kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) in a compact footprint for 400 V systems
Insulation class H provides excellent thermal endurance
Four‑pole design ensures stable frequency and low vibration
IP23 enclosure offers splash protection suitable for deck installation
Siemens global service network simplifies maintenance and spare‑parts logistics

Weaknesses

IP23 rating does not protect against dust ingress, limiting placement in harsh environments
Single voltage (400 V) and frequency (50 Hz) may not suit vessels requiring dual‑frequency or higher voltage options
Oil‑lubricated bearings require regular oil monitoring to avoid contamination risks
Physical size can be a constraint on vessels with limited generator room
Higher upfront cost compared with some lower‑priced competitors

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierRo‑Ro ferry

Certifications: IMO Type ApprovalDNV GL

Decision Guide: Choose if you need a reliable, high‑capacity 400 V/50 Hz generator with robust thermal performance and strong OEM support for main or emergency power on large commercial vessels. Avoid if the installation space is extremely limited, dual‑frequency operation is required, or a higher dust‑tight protection class is mandatory.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads on cruise ships, as a main‑generator for propulsion auxiliaries on container and bulk carriers, or as emergency power on tankers and offshore support vessels where continuous, high‑quality electricity is critical.

Datasheet

Siemens Marine 1FJ4 1250kVA 400V 60Hz Marine

1FJ4 1250kVA 400V 60Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) suitable for large vessel hotel loads
Class‑H insulation allows operation at elevated temperatures with reduced cooling demand
Brushless design minimises routine maintenance and improves reliability
IP23 enclosure provides protection against dust and limited water ingress typical of marine engine rooms
Siemens global support network and proven track record in marine applications

Weaknesses

Large physical footprint and weight compared with newer compact generator designs
IP23 rating does not protect against direct water spray; additional sealing may be required in harsh environments
Fixed 400 V, 60 Hz output limits use on vessels standardising on 50 Hz or higher voltage systems
Higher upfront capital cost relative to some OEM competitors
Requires a compatible diesel engine and dedicated cooling system

Typical Vessels: Container shipCruise linerTankerBulk carrierOffshore supply vesselLNG carrier

Certifications: IMO D-2

Decision Guide: Choose if: you need a robust 1250 kVA auxiliary generator for 400 V/60 Hz systems, value low‑maintenance brushless operation and Siemens after‑sales support, and operate in environments where IP23 protection is sufficient. Avoid if: the vessel requires 50 Hz power, higher voltage levels, tighter space constraints, or a fully water‑tight enclosure.

Use Cases: Typically installed as part of a ship's main auxiliary generator set to supply hotel loads, emergency power, and dynamic positioning systems on large merchant vessels and cruise ships. Often paired with diesel engines in a genset configuration for continuous operation during voyages.

Datasheet

1FJ4 1250kVA 440V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1250 kVA in a compact 4‑pole design suitable for medium‑size vessels
Insulation class H provides excellent thermal endurance and reliability under heavy load cycles
IP23 enclosure offers protection against splashing water while allowing easy access for maintenance
Standard 440 V/50 Hz output matches most European‑type shipboard electrical systems, simplifying integration
Siemens proven track record in marine power equipment ensures long‑term support and spare parts availability

Weaknesses

Fixed 50 Hz frequency limits use on vessels that require 60 Hz or dual‑frequency capability
IP23 rating is not fully dust‑tight; unsuitable for harsh, dusty environments without additional protection
No built‑in redundancy – a separate backup generator is required for critical applications
Weight and dimensions are typical of high‑power alternators, requiring dedicated engine room space
Requires external excitation system; some competitors offer self‑excited units

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Certifications: IMO D-2DNV GL approval

Decision Guide: Choose if: you need a reliable 1250 kVA generator for vessels operating on 50 Hz systems, require high thermal endurance (class H), and prefer Siemens service network. Avoid if: the vessel operates on 60 Hz or needs dust‑tight protection, or if space constraints preclude a standard‑size alternator.

Use Cases: Typically installed as the main auxiliary generator on medium‑sized cargo ships to supply hotel loads, deck machinery, and emergency power; also used in offshore support vessels where robust, continuous operation is critical.

Datasheet

1FJ4 1250kVA 440V 60Hz Marine unverified

· diesel‑electric generator set

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) suitable for large hotel loads
Class H insulation allows operation in elevated ambient temperatures
Four‑pole design provides stable 60 Hz frequency at 1500 rpm, reducing wear
Proven Siemens reliability and global support network
Open IP23 enclosure simplifies installation and maintenance on deck

Weaknesses

Open enclosure (IP23) offers limited protection against harsh weather; may need additional shielding
Large physical footprint and weight can be challenging in space‑constrained engine rooms
Noise levels higher than fully enclosed models, requiring extra acoustic treatment
Designed for 60 Hz markets only; not suitable for vessels operating on 50 Hz systems without conversion
Higher upfront cost compared with generic off‑brand generators

Typical Vessels: Container ShipCruise ShipLNG CarrierOil TankerOffshore Supply Vessel

Certifications: IMO D-2ABSUSCG Type Approval

Decision Guide: Choose if: you need a reliable 1250 kVA auxiliary power source for a large vessel operating on 60 Hz, require high temperature capability (Class H), and value Siemens global service support. Avoid if: space is limited, the installation environment demands a fully sealed enclosure (IP55+), noise restrictions are strict, or the vessel operates on a 50 Hz electrical system.

Use Cases: Typically installed as a main auxiliary generator for hotel power, emergency power, or propulsion‑assist on large ocean‑going vessels such as container carriers, cruise liners and LNG carriers. Also used in offshore support ships where high continuous power and robust performance are required.

Datasheet

1FJ4 1250kVA 690V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) in a relatively compact footprint
IP23 sealed enclosure protects against dust and water spray, suitable for harsh marine environments
Class H insulation allows operation up to 180 °C, enhancing durability
Integrated control interface compatible with common ship automation systems
Siemens global service network provides strong after‑sales support

Weaknesses

Requires an external prime mover (diesel engine), adding system weight and space requirements
IP23 rating is not fully watertight; additional protection may be needed in heavy spray zones
Fixed 50 Hz frequency limits use on vessels that require dual‑frequency capability
Higher upfront cost compared with some lower‑priced competitors

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IMO D-2DNV

Decision Guide: Choose if you need a reliable, high‑capacity auxiliary generator with proven Siemens durability and global support for vessels operating in demanding marine conditions. Avoid if space is extremely limited, dual‑frequency operation is required, or budget constraints favor lower‑cost alternatives.

Use Cases: Commonly installed as part of an auxiliary power plant on large commercial ships to supply hotel loads, cargo handling equipment, and emergency systems; also used on offshore support vessels where robust performance under high temperature and corrosive environments is essential.

Datasheet

1FJ4 1250kVA 690V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1.25 MVA) suitable for large hotel and propulsion‑auxiliary loads
Class H insulation allows operation at elevated temperatures, enhancing reliability in hot engine rooms
Four‑pole design provides a stable 1800 rpm speed at 60 Hz, simplifying coupling to standard diesel engines
Siemens’ proven marine heritage offers extensive after‑sales support and spare‑parts availability
IP23 enclosure protects against solid foreign objects while allowing easy access for maintenance

Weaknesses

IP23 rating does not protect against water spray or dust, limiting use in harsh external environments
Physical size and weight are substantial; installation requires ample engine‑room space
Fixed 690 V output may need additional transformers for vessels standardising on lower voltages
Four‑pole machines run at higher RPM than low‑speed generators, potentially increasing wear on bearings
Initial capital cost is typically higher than comparable non‑Siemens units

Typical Vessels: Container shipCruise linerLNG carrierOil tankerOffshore supply vessel

Decision Guide: Choose if you need a reliable >1 MVA auxiliary generator, operate in high‑temperature engine rooms, and value Siemens global support. Avoid if space is at a premium, you require higher ingress protection (IP55/65), or the vessel uses a lower standard voltage that would add conversion equipment.

Use Cases: Commonly installed as the main service generator on large merchant vessels to supply hotel loads, cargo‑handling gear, and propulsion auxiliaries; also used as an emergency power source on cruise ships where redundancy is critical.

Datasheet

Siemens Marine 1FJ4 1600kVA 400V 50Hz Marine

1FJ4 1600kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1.6 MVA) suitable for large auxiliary or main power plants
Robust H‑class insulation provides excellent thermal endurance and reliability
Compact four‑pole design fits within limited engine‑room spaces
Siemens proven marine heritage ensures long‑term support and spare parts availability
Integrated control interface compatible with common ship automation systems

Weaknesses

Fixed 400 V/50 Hz output limits flexibility for vessels requiring other voltage/frequency standards
IP23 enclosure offers limited protection against direct water ingress; additional sealing may be required in harsh environments
Relatively high initial capital cost compared with lower‑rated alternatives
Requires skilled maintenance personnel familiar with Siemens marine generators

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if you need a reliable, high‑capacity 1.6 MVA generator for vessels operating on 400 V/50 Hz systems and value Siemens service support. Avoid if your vessel requires variable frequency drives, lower voltage ratings, or operation in environments demanding higher ingress protection than IP23.

Use Cases: Commonly installed as a main auxiliary generator on large merchant ships to supply hotel loads, cargo handling equipment, and emergency power; also used as a secondary generator on cruise vessels where redundancy is critical.

Datasheet

Siemens Marine 1FJ4 1600kVA 400V 60Hz Marine

1FJ4 1600kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1600 kVA) suitable for large vessel service loads
Four‑pole design provides stable frequency at 60 Hz under varying load conditions
Insulation class H offers excellent thermal endurance and reliability
IP23 enclosure protects against dust and limited water ingress, fitting typical engine room environments
Siemens reputation for engineering quality and long‑term parts support

Weaknesses

Physical size and weight are substantial; may be challenging to fit in vessels with tight generator room constraints
Standard IP23 rating does not protect against heavy spray or immersion, limiting placement options near open decks
No built‑in emissions after‑treatment; compliance relies on the prime mover (engine) rather than the alternator itself
Higher initial capital cost compared with some low‑cost generic alternatives

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a proven, high‑capacity 1600 kVA generator for a large commercial or offshore vessel and have sufficient space for a four‑pole, IP23 unit. Avoid if the installation envelope is tight, you require higher ingress protection (e.g., IP55), or you depend on integrated emissions control within the alternator itself.

Use Cases: The 1FJ4 is typically installed as the main auxiliary generator on large cargo vessels and cruise ships, providing shipboard electricity for propulsion auxiliaries, hotel loads, and emergency power. It is also used on offshore supply vessels where a reliable high‑power source is needed for dynamic positioning systems and deck equipment.

Datasheet

Siemens Marine 1FJ4 1600kVA 440V 50Hz Marine

1FJ4 1600kVA 440V 50Hz Marine unverified

· Synchronous marine generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1.6 MVA suitable for large ship propulsion or hotel loads
H‑class insulation allows operation at elevated temperatures, enhancing reliability
Four‑pole design provides stable frequency and low vibration
IP23 enclosure offers protection against splashing water in typical marine environments
Designed to integrate with Siemens SISHIP control and monitoring systems

Weaknesses

Physical size and weight are substantial; installation requires ample engine room space
IP23 rating does not protect against dust ingress, limiting use in harsher compartments
Fixed 440 V/50 Hz output may require additional transformers for vessels operating on 60 Hz systems
Requires Siemens‑specific control interfaces for full functionality, which can increase initial cost

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a proven, high‑power marine generator with robust temperature tolerance and seamless integration into Siemens control suites on vessels operating at 440 V/50 Hz. Avoid if space, weight, or a higher voltage/60 Hz requirement are critical, or if you prefer a non‑Siemens control architecture.

Use Cases: Primary main‑engine driven generator for propulsion and hotel power on large cargo and passenger ships; also used as an emergency standby generator where high reliability and rapid start‑up are required.

Datasheet

1FJ4 1600kVA 440V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1.6 MVA) suitable for large vessel hotel loads or propulsion auxiliaries
Insulation class H provides excellent thermal tolerance and reliability
Four‑pole design yields a low rotational speed (1500 rpm at 60 Hz), reducing wear on bearings
Siemens global support network and proven marine track record
Compact modular layout that integrates easily with existing shaft‑driven generator sets

Weaknesses

IP23 enclosure offers only limited protection against water spray; additional shielding may be required in harsh environments
Designed for 60 Hz systems, limiting use on vessels standardized to 50 Hz
Physical size and weight are typical of high‑power alternators, impacting installation space
Requires a dedicated cooling system (air or water) which adds complexity
Higher upfront cost compared with lower‑rated or generic generators

Typical Vessels: Container shipCruise linerLNG carrierBulk carrierOffshore supply vesselNaval auxiliary

Certifications: IMO D-2 (marine generator)DNV Classification Society approval

Decision Guide: Choose if: you need a reliable 1.6 MVA, 60 Hz power source for large ocean‑going vessels and value Siemens service support; the vessel operates in environments where IP23 protection is acceptable or can be supplemented. Avoid if: the ship uses a 50 Hz electrical system, requires a higher IP rating (e.g., IP55), or has severe space/weight constraints that favor smaller generators.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels to supply hotel loads and propulsion auxiliaries, or as an emergency power source on cruise ships and offshore platforms where high reliability is mandatory.

Datasheet

1FJ4 1600kVA 690V 50Hz Marine unverified

· diesel‑driven marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1.6 MVA) suitable for large hotel loads on ocean‑going vessels
Thermal class H insulation allows operation in high‑temperature environments
Integrated Siemens control and monitoring system simplifies load management and diagnostics
Proven Siemens reputation for reliability and long service intervals
Modular design facilitates installation and future upgrades

Weaknesses

IP23 enclosure provides limited protection against water ingress; additional shielding may be required in wet spaces
Physical size and weight are substantial, impacting space‑critical installations
Complex control electronics demand trained personnel for troubleshooting
Higher upfront capital cost compared with generic off‑brand generators

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrier (auxiliary power)Bulk carrier

Decision Guide: Choose if you need a high‑capacity, reliable auxiliary generator with Siemens after‑sales support and integrated control on large commercial vessels. Avoid if the installation area requires a higher ingress protection rating or if budget constraints favor lower‑cost alternatives.

Use Cases: Provides primary hotel power for cargo handling equipment, accommodation services, and navigation systems; serves as emergency standby generation and can support dynamic positioning loads on offshore vessels.

Datasheet

1FJ4 1600kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1.6 MVA) suitable for large vessel hotel loads
Class H insulation allows operation at elevated temperatures with good thermal margin
Four‑pole design provides stable frequency and lower vibration compared to higher‑speed units
IP23 enclosure offers protection against splashing water – appropriate for typical engine‑room environments
Siemens control integration (remote monitoring, automatic load sharing) simplifies plant management

Weaknesses

Relatively large footprint and weight; may require substantial engine‑room space
IP23 rating is not dust‑tight, so additional sealing may be needed in harsh marine climates
Fixed 690 V output may necessitate step‑up/down transformers for vessels with different bus voltages
Higher initial capital cost compared with some low‑speed diesel generators of similar rating
Maintenance intervals are longer than brushless permanent‑magnet alternatives, requiring periodic exciter servicing

Typical Vessels: Container shipCrude oil tankerLNG carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑power auxiliary set on a large commercial or offshore vessel and have sufficient engine‑room volume for a four‑pole synchronous unit. Avoid if your design calls for a compact, dust‑tight generator, lower voltage bus architecture, or the lowest possible acquisition cost.

Use Cases: The 1FJ4 is commonly installed as part of a dual‑generator plant on large merchant ships to supply hotel services, cargo handling equipment, and emergency power. It is also used in cruise ships for hotel load and in offshore vessels where robust, temperature‑tolerant generators are required.

Datasheet

1FJ4 2000kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2000 kVA) suitable for large vessels
Class H insulation allows operation in elevated ambient temperatures
Four‑pole design provides stable 50 Hz frequency on typical ship electrical systems
Robust IP23 enclosure offers protection against splashing water and dust in marine environments
Siemens proven reliability and global support network

Weaknesses

Large physical footprint and weight may limit installation in space‑constrained vessels
Standard IP23 rating does not protect against direct water ingress; additional sealing may be required for harsher conditions
No built‑in fuel‑flexibility features (e.g., dual‑fuel capability) – requires external engine configuration
Higher initial capital cost compared with some low‑cost alternatives
Requires dedicated cooling and ventilation systems due to high power density

Typical Vessels: Cruise shipContainer vesselTankerBulk carrierLNG/LPG carrierOffshore supply vessel

Decision Guide: Choose if you need a high‑capacity, reliable auxiliary generator for large merchant or offshore vessels and have sufficient space for a 2000 kVA unit with robust cooling. Avoid if the installation envelope is tight, you require a higher protection class (e.g., IP66) or dual‑fuel capability, or budget constraints favor smaller generators.

Use Cases: Typically installed as part of the main auxiliary power plant on large ships to supply hotel loads, cargo handling equipment, and emergency power. Frequently paired with medium‑speed diesel engines in a genset configuration for continuous operation during voyages and shore‑side power when docked.

Datasheet

1FJ4 2000kVA 400V 60Hz Marine unverified

· marine alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MVA) suitable for large vessel auxiliary loads
Class H insulation provides excellent thermal endurance
Four‑pole design offers stable voltage and frequency under varying load
Standard 400 V/60 Hz matches US‑type shipboard electrical systems
Siemens Marine reputation for reliability and long service life

Weaknesses

IP23 enclosure limits protection against heavy spray; may require additional shielding in harsh environments
Physical size and weight are substantial, impacting installation space
Fixed 400 V output may need step‑up/down transformers for vessels with different voltage standards
Limited to 60 Hz operation; not directly compatible with 50 Hz fleets without frequency conversion

Typical Vessels: Cruise shipOffshore supply vesselLNG carrierContainer shipBulk carrier

Decision Guide: Choose if you need a robust 2 MVA auxiliary generator for US‑type 400 V/60 Hz systems on large vessels and can accommodate its size. Avoid if the vessel operates on 50 Hz, requires higher voltage levels, or demands an enclosure with greater water ingress protection.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on cruise ships, offshore support vessels, and large bulk carriers. Also used in redundancy configurations where multiple generators share the load.

Datasheet

1FJ4 2000kVA 440V 50Hz Marine unverified

· four-pole synchronous marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2000 kVA) suitable for large vessel hotel and propulsion loads
Robust IP23 enclosure protects against dust and splashing water in harsh marine environments
Insulation class H allows operation at elevated temperatures, improving reliability on long voyages
Siemens proven engineering reputation and global service network simplify maintenance and spare‑parts logistics
Modular construction enables relatively quick removal and replacement during scheduled overhauls

Weaknesses

Large physical size and weight demand significant installation space and structural support
Requires dedicated cooling system to manage heat at full load, adding complexity
Fixed 440 V/50 Hz output may not match vessels that standardise on 60 Hz or different voltage levels
Higher capital cost compared with lower‑rated generators from generic manufacturers
Partial‑load efficiency drops off faster than some modern oil‑free screw‑type generators

Typical Vessels: Cruise shipLNG carrierOffshore support vesselContainer shipBulk carrier

Decision Guide: Choose the 1FJ4 when a vessel needs a reliable, high‑capacity auxiliary power source and can accommodate its size, weight, and cooling requirements. It is especially attractive for ships that already use Siemens electrical systems or require class‑approved equipment with proven service history. Avoid if the vessel has limited space, operates on a 60 Hz grid, or if budget constraints favour smaller, lower‑cost generators.

Use Cases: The alternator is typically shaft‑driven and installed in the main engine room of large commercial vessels to supply continuous hotel power, support propulsion auxiliaries, and provide redundancy for emergency generation. It is also used on offshore platforms where high, stable electrical output is critical for drilling and processing equipment.

Datasheet

1FJ4 2000kVA 440V 60Hz Marine unverified

· Brushless synchronous generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MVA) suitable for hotel and emergency loads on big ships
Class H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Four‑pole design provides stable frequency and lower vibration compared with two‑pole units
IP23 enclosure meets typical marine splash‑proof requirements while keeping the unit compact for its rating
Siemens global service network ensures rapid spare‑part availability and technical support

Weaknesses

Large physical size and weight demand considerable engine‑room space and robust mounting structures
Initial capital cost is higher than many generic alternator brands
Requires skilled personnel for brushless exciter maintenance and periodic testing
IP23 rating offers only splash protection; not suitable for highly dusty or corrosive compartments without additional shielding
Fixed 60 Hz frequency limits use in regions where 50 Hz is standard

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: IMO Type Approval (D‑2)DNV GL Classification approval

Decision Guide: Choose if you need a robust 2 MVA auxiliary generator for 60 Hz markets, value Siemens after‑sales support, and have sufficient engine‑room space. Avoid if vessel operates on 50 Hz systems, budget constraints are tight, or the installation area cannot accommodate the unit’s dimensions.

Use Cases: Typically installed as a main hotel‑load generator, emergency power source, or propulsion‑auxiliary drive on large ocean‑going vessels where continuous high‑capacity electricity is required.

Datasheet

1FJ4 2000kVA 690V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MW) suitable for large auxiliary or emergency loads
Class‑H insulation allows operation at elevated temperatures and improves durability
IP23 enclosure provides protection against dust and splashing water, suitable for deck installation
Four‑pole design ensures stable 50 Hz frequency under varying load conditions
Siemens global support network and proven marine reliability

Weaknesses

Large physical footprint and weight typical of high‑power generators (requires ample machinery space)
Requires an external cooling water system for temperature control
Fixed 690 V output may need additional transformers or converters on vessels with different voltage standards
Higher upfront cost compared with generic OEM units
Needs Siemens‑compatible control and protection gear for optimal performance

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierRo‑Ro ferryHeavy‑lift cargo vessel

Certifications: IMO D-2

Decision Guide: Choose if you require a reliable 2 MW auxiliary or emergency power source, have sufficient machinery space, and prefer Siemens after‑sales support. Avoid if vessel size limits installation space, the electrical system uses a different voltage level, or budget constraints favor lower‑cost alternatives.

Use Cases: Typically installed as main auxiliary generators on large commercial vessels to supply hotel loads, cargo handling equipment, dynamic positioning thrusters, and emergency power; also used in cruise ships for extensive hotel services and in offshore support vessels where high reliability is critical.

Datasheet

1FJ4 2000kVA 690V 60Hz Marine unverified

· diesel-driven synchronous generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2 MW) suitable for large vessel auxiliary loads
Class H insulation allows operation at elevated temperatures without derating
IP23 marine‑grade enclosure provides protection against splash and dust in engine rooms
Four‑pole design delivers stable 60 Hz frequency with low harmonic distortion
Siemens proven reliability and extensive service network for spare parts and support

Weaknesses

Large physical footprint and high weight require substantial installation space
Requires a dedicated diesel engine; fuel consumption is higher than smaller units
Fixed 690 V output may need additional transformers or converters for vessels using different bus voltages
Initial capital cost is relatively high compared with lower‑rated generators
Maintenance intervals are tied to the prime mover (diesel engine) rather than the alternator itself

Typical Vessels: Cruise ShipContainer ShipTankerBulk CarrierOffshore Support Vessel

Decision Guide: Choose if you need a high‑capacity, reliable auxiliary power source for large vessels and can accommodate the size, weight, and diesel fuel requirements. Avoid if vessel space is limited, lower voltage distribution is required, or capital budget constraints favor smaller generator sets.

Use Cases: The 1FJ4 is commonly installed as a main auxiliary generator on cruise liners, container ships, and tankers to supply hotel loads, cargo handling equipment, and emergency power. It also serves as a standby unit for critical systems where redundancy and rapid start‑up are essential.

Datasheet

WEG Marine

GTW 50kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact size suitable for limited engine room space
IP44 enclosure provides basic weather and splash protection
Class H insulation allows operation at higher ambient temperatures
Four‑pole design gives stable frequency and lower vibration
WEG reputation for robust electrical equipment and global support

Weaknesses

Maximum output of only 50 kVA may be insufficient for larger vessels or high‑power auxiliaries
IP44 rating does not protect against heavy spray or immersion, limiting placement in very wet zones
Fixed 400 V/50 Hz output may require converters on ships using 60 Hz systems
Limited redundancy; a single unit cannot supply full ship load alone

Typical Vessels: Coastal patrol boatsCrew transfer vesselsOffshore supply & service craftFerries (small to medium)Yachts and luxury tenders

Decision Guide: Choose if you need a reliable, compact auxiliary generator for vessels with a 400 V/50 Hz electrical system and power demand up to ~50 kVA. Avoid if the ship requires higher power output, stricter ingress protection (e.g., IP65), or operates on 60 Hz mains.

Use Cases: Commonly installed as an auxiliary generator for emergency power, hotel load, deck machinery, navigation equipment, and shore‑to‑ship power conversion on small to medium offshore vessels.

Datasheet

GTW 50kVA 400V 60Hz Marine unverified

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency and stable 4‑pole operation for smooth frequency output
IP44 enclosure provides protection against splashing water and dust in marine environments
Class H insulation allows higher temperature operation and longer service life
Compact footprint suitable for limited engine‑room space on small to medium vessels
WEG’s global support network and proven reliability in offshore applications

Weaknesses

Maximum output of only 50 kVA may be insufficient for larger ships or high‑power auxiliary loads
IP44 rating does not protect against heavy spray or immersion; harsher environments may require IP55+
Limited to 60 Hz operation, which can be a drawback in regions where 50 Hz is standard
No integrated control panel – requires separate governor/excitation system installation
Weight‑to‑power ratio higher than some modern lightweight generator sets

Typical Vessels: YachtCoastal patrol boatWorkboat / supply vesselFerry (auxiliary power)Small offshore support vessel

Decision Guide: Choose if: you need a reliable, compact 50 kVA generator for small to medium vessels, require IP44 protection and prefer WEG’s service network. Avoid if: the installation demands higher power, stricter ingress protection (IP55 or above), or operation at 50 Hz.

Use Cases: Commonly installed as an auxiliary generator on yachts, ferries, patrol boats, and offshore workboats to supply hotel loads, deck machinery, and emergency power when the main engine is offline.

Datasheet

GTW 50kVA 440V 50Hz Marine unverified

· four‑pole synchronous marine generator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High insulation class H provides excellent thermal endurance in harsh marine environments
IP44 enclosure offers protection against splashing water and dust while keeping the unit relatively lightweight
Four‑pole design gives good low‑speed torque, suitable for diesel engine drives common on auxiliary gensets
Compact footprint fits well into limited engine‑room spaces on smaller vessels
WEG’s reputation for robust construction and long service intervals reduces total ownership cost

Weaknesses

Maximum output of only 50 kVA limits use to small‑to‑medium ships; not suitable for large tankers or container vessels requiring higher auxiliary power
Noise level is typical for air‑cooled marine gensets and may require additional acoustic insulation in passenger‑focused applications
Standard cooling is air‑forced; high ambient temperatures can demand supplemental cooling measures
Spare parts inventory may be less widespread than for more common Western brands (e.g., Caterpillar, Cummins) in some regions

Typical Vessels: Coastal ferriesOffshore supply vesselsWorkboatsYachts and super‑yachtsPatrol and coast guard craft

Certifications: DNVABS

Decision Guide: Choose if you need a reliable 50 kVA auxiliary power source for vessels with limited engine‑room space, require high thermal resistance (class H) and IP44 protection, and value WEG’s low maintenance design. Avoid if the vessel demands higher auxiliary capacity (>100 kVA), operates in extremely noisy environments without acoustic treatment, or if local support for WEG spare parts is unavailable.

Use Cases: Typically installed as a main hotel‑load generator on small passenger ferries, as an emergency backup unit on offshore supply ships, or to provide shore power and auxiliary electricity on yachts and patrol boats where space and weight are at a premium.

Datasheet

GTW 50kVA 440V 60Hz Marine unverified

· synchronous alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact 50 kVA rating ideal for small to medium auxiliary loads
IP44 marine‑grade enclosure protects against splashing water and dust
Insulation class H allows operation at elevated temperatures typical on ships
Four‑pole design provides stable voltage and frequency output
Widely supported by WEG’s global service network

Weaknesses

Limited power output may be insufficient for larger vessels or high‑demand cargo operations
IP44 does not meet the higher protection required for harsh offshore environments (e.g., IP65)
No integrated cooling system; requires external ventilation or water cooling arrangements
Only available in 60 Hz version, limiting use on 50 Hz markets without frequency conversion

Typical Vessels: Offshore support vesselTugboatPilot boatSmall passenger ferryYachtFishing vessel

Decision Guide: Choose if: you need a reliable, compact auxiliary generator for vessels with modest power demand and operate in environments where IP44 protection is adequate. Avoid if: the ship requires higher power output, stricter ingress protection (IP65 or above), or must run on 50 Hz without additional conversion equipment.

Use Cases: Commonly installed as an emergency/auxiliary generator to supply lighting, navigation electronics, HVAC, and small cargo handling gear on offshore support vessels, tugs, pilot boats, and medium‑size ferries. Also used on luxury yachts for onboard hotel services where space and weight are at a premium.

Datasheet

GTW 50kVA 690V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Brushless design eliminates rotor brushes, reducing maintenance intervals.
High efficiency operation typical of WEG synchronous machines.
Compact, IP44‑rated enclosure suitable for exposed deck or engine‑room installations.
Class H insulation permits higher operating temperatures and improves reliability in hot climates.

Weaknesses

Maximum output of only 50 kVA limits use on larger vessels with higher hotel loads.
IP44 protection is limited to splashing water; not suitable for fully wet or submerged locations.
Fixed 690 V output may require additional step‑down transformers for systems that operate at lower voltages.
No integrated sound‑attenuation enclosure; external muffling may be needed in noise‑sensitive areas.

Typical Vessels: Coastal cargo vesselsOffshore supply boatsPatrol and security craftFerries and passenger launchesLarge yachts and superyachts

Decision Guide: Choose if: you need a reliable, low‑maintenance 50 kVA auxiliary power source for small to medium vessels, have space constraints, and operate in environments where IP44 protection is sufficient. Avoid if: the vessel requires higher power output, stricter ingress protection (e.g., IP65), or an integrated sound‑proofed generator set.

Use Cases: Typically installed as a main auxiliary generator on small commercial ships to supply hotel loads, navigation and communication equipment, and emergency power; also used on offshore support vessels for powering deck machinery and crew accommodations.

Datasheet

GTW 50kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact footprint suitable for limited engine room space
IP44 enclosure protects against splashing water and dust in harsh marine environments
Class H insulation allows operation at elevated ambient temperatures
Integrated digital control (WEG Power Control) provides easy monitoring, remote start/stop and fault diagnostics
High efficiency design reduces fuel consumption compared with older brush‑type generators

Weaknesses

Maximum output of 50 kVA may be insufficient for larger vessels or high‑power auxiliary loads
IP44 rating does not protect against full immersion; additional sealing may be required in heavy spray zones
Fixed 690 V output may need step‑up/step‑down transformers for ships using different bus voltages
Initial purchase price can be higher than generic, non‑certified generator sets
Requires compatible cooling system (air‑forced) that must be integrated during installation

Typical Vessels: Crew boatOffshore supply vesselPatrol / coast guard cutterFerry (small to medium)WorkboatPlatform support vessel

Certifications: ABS Marine Generator Set ApprovalDNV GL Type Approval

Decision Guide: Choose if you need a reliable, compact auxiliary power source up to 50 kVA with built‑in digital control and high temperature tolerance for small‑to‑medium vessels. Avoid if the vessel requires higher power output, stricter ingress protection (e.g., IP65), or if budget constraints favor a lower‑cost non‑certified unit.

Use Cases: Typically installed as an auxiliary generator on crew boats, offshore supply ships and patrol cutters to supply lighting, navigation electronics, cargo handling equipment and emergency power. Also used on small ferries and platform support vessels where space is limited and a robust, low‑maintenance solution is required.

Datasheet

GTW 75kVA 400V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact footprint and relatively low weight for a 75 kVA unit, saving valuable engine room space
IP44 enclosure provides protection against splashing water and dust typical of marine environments
Insulation class H allows operation at higher temperatures, improving reliability in hot climates
Brushless design reduces maintenance intervals and eliminates brush wear issues
Integrated control interface compatible with common ship automation systems

Weaknesses

Maximum output of 75 kVA may be insufficient for larger vessels or high‑power hotel loads
IP44 rating does not protect against heavy spray or immersion, limiting placement in very wet zones
Single unit provides no built‑in redundancy; a failure means loss of the entire auxiliary power source
May require an external cooling system (forced air or water) depending on installation conditions
Limited availability of spare parts in remote ports compared with more widely used 150 kVA+ generators

Typical Vessels: Offshore supply vesselCrew boat / workboatPatrol and coast guard cutterFerry (small to medium)Yacht or luxury cruiser

Decision Guide: Choose if: you need a reliable, low‑maintenance auxiliary power source in the 70–80 kVA range, space is at a premium and the installation area can meet IP44 protection. Avoid if: the vessel requires higher continuous power, strict wet‑area protection (IP65 or higher), or built‑in redundancy for critical loads.

Use Cases: Typically installed as the main auxiliary generator on small to medium vessels, supplying hotel services, navigation equipment, lighting and pump systems; also used as an emergency standby generator where a compact, quickly deployable unit is required.

Datasheet

GTW 75kVA 400V 60Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High insulation class (H) allows operation in hot engine rooms up to 180 °C.
Compact IP44 marine‑grade enclosure resists splashing and corrosion.
Brushless design reduces maintenance intervals and improves reliability.
75 kVA rating matches the auxiliary power needs of many offshore supply and coastal vessels.
WEG’s global support network provides spare parts and service expertise.

Weaknesses

IP44 protection is limited against heavy water ingress; not suitable for fully exposed deck installations.
Maximum output (75 kVA) may be insufficient for larger ships or high‑hotel‑load scenarios.
Single voltage (400 V) may require additional transformers for vessels using 440 V or other standards.
No integrated digital control panel – requires external monitoring/automation equipment.
Weight and dimensions are not specified here, which can affect installation planning.

Typical Vessels: Offshore Supply VesselCoastal TankerResearch / Survey ShipPatrol BoatFeeder Container

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 75 kVA auxiliary generator with high temperature tolerance and a compact, splash‑proof marine enclosure. Avoid if your vessel requires higher power output, stricter ingress protection (e.g., IP65), or an integrated control system out of the box.

Use Cases: Commonly installed as emergency/auxiliary power on offshore supply vessels, coastal tankers, patrol boats and research ships to run hotel loads, lighting, pumps and small propulsion assists. Also used on remote offshore platforms where a robust, low‑maintenance generator is required.

Datasheet

GTW 75kVA 440V 50Hz Marine unverified

· diesel-driven marine alternator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High insulation class (H) provides excellent temperature tolerance and longer service life.
Compact footprint suitable for vessels with limited engine‑room space.
Robust IP44 enclosure protects against splashing water and dust typical on deck installations.
Four‑pole design delivers smooth, low‑vibration operation, reducing wear on mounting structures.
WEG’s global support network offers spare parts availability in many regions.

Weaknesses

IP44 rating is not fully sealed; may require additional protection in harsh marine environments (e.g., heavy spray zones).
75 kVA output limits use to small‑to‑medium vessels or as a secondary/auxiliary set on larger ships.
Standard cooling relies on air flow; high ambient temperatures can reduce efficiency without supplemental cooling.
Control interface may be less advanced than newer digital generators that include remote monitoring out of the box.

Typical Vessels: Coastal cargo vesselsOffshore supply boatsFerries (short‑range)Patrol and coast guard craftLarge yachts

Decision Guide: Choose if: you need a reliable 75 kVA auxiliary source, have limited engine‑room space, and operate in environments where IP44 protection is sufficient. Avoid if: the vessel requires higher power output, operates continuously in heavy spray or salt‑water immersion zones, or demands integrated digital monitoring without retrofit.

Use Cases: Commonly installed as a main auxiliary generator for hotel loads on small to medium vessels, as an emergency standby set, or paired with shore‑power converters on ferries and offshore supply ships where compact size and robust construction are priorities.

Datasheet

GTW 75kVA 440V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Robust Class H insulation allows higher temperature operation and longer life
IP44 enclosure provides adequate protection against splashing water and dust in typical marine environments
Compact footprint suitable for limited engine‑room space
Integrated voltage regulator simplifies installation and reduces auxiliary equipment
WEG reputation for reliability and low maintenance

Weaknesses

75 kVA output may be insufficient for larger vessels or high‑power hotel loads
IP44 rating is not fully sealed; unsuitable for harsh offshore spray zones requiring IP66+ protection
Weight-to‑power ratio higher than some modern lightweight aluminum generators
Limited to 60 Hz systems, not directly compatible with 50 Hz regions without redesign
Specific certification (e.g., ABS, DNV) not confirmed for this exact model

Typical Vessels: Coastal cargo vesselCrew boat / supply shipFerryPatrol craftTugboat

Decision Guide: Choose if you need a dependable 75 kVA auxiliary power source for vessels up to ~2,000 GT, value WEG's proven reliability, and the operating environment does not demand higher than IP44 protection. Avoid if your vessel requires more than 75 kVA, needs full splash‑proof (IP66) or explosion‑proof certification, or must meet a specific classification approval that is not verified for this model.

Use Cases: Commonly installed as the main auxiliary generator to supply hotel loads, navigation equipment, cargo handling gear, and emergency power on coastal and offshore support vessels where space is limited and a rugged, low‑maintenance solution is preferred.

Datasheet

GTW 75kVA 690V 50Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency (>95%) with low fuel consumption when driven by a diesel engine
Compact size and relatively light weight for its power class, saving valuable space on board
Class H insulation allows operation at elevated temperatures typical of marine environments
IP44 enclosure provides protection against splashing water and dust while allowing easy maintenance access
Brushless design reduces wear and maintenance intervals

Weaknesses

Limited to 690 V/50 Hz; not suitable for vessels requiring 60 Hz or higher voltage systems
Maximum output of 75 kVA may be insufficient for larger ships with high auxiliary loads
IP44 rating does not protect against heavy spray or immersion, so additional shielding may be needed in harsh weather
Noise and vibration levels depend on the prime mover; no built‑in acoustic enclosure
Requires a compatible diesel engine coupling and proper ventilation system

Typical Vessels: Offshore supply vesselCoastal cargo shipFerry (small to medium)Patrol boatWorkboat / tug

Decision Guide: Choose if: you need a reliable, space‑saving auxiliary generator of up to 75 kVA for vessels operating on 50 Hz systems and can accommodate its ventilation requirements. Avoid if: the vessel demands higher power, 60 Hz operation, or stricter noise/EMC standards that exceed what an IP44 enclosure provides.

Use Cases: Typically installed as a main auxiliary generator to supply ship services such as lighting, HVAC, cargo handling equipment, and navigation systems on medium‑size vessels; also used as emergency backup power on offshore platforms where compactness and durability are critical.

Datasheet

GTW 75kVA 690V 60Hz Marine unverified

· diesel-driven marine generator

Power (kVA)

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency low‑speed design reduces fuel consumption
Robust WEG engineering with proven reliability in harsh marine environments
Class H insulation allows operation at elevated temperatures typical on ships
Compact IP44 enclosure saves space while protecting against splashing water
Integrated control panel simplifies monitoring and maintenance

Weaknesses

75 kVA output may be insufficient for larger vessels or high‑power hotel loads
IP44 rating does not protect against heavy spray or dust; harsher environments may need higher protection
Fixed 690 V output may require additional step‑down transformers for standard shipboard voltages (e.g., 440 V)
Limited redundancy – a single unit without parallel operation capability

Typical Vessels: Offshore supply vesselWorkboat / tugCoastal ferryYachtSmall container feederMedium‑size tanker (as emergency generator)

Decision Guide: Choose if you need a reliable, compact 75 kVA auxiliary power source for small to medium vessels and value WEG's reputation for durability and low fuel consumption. Avoid if the vessel requires higher power ratings, full IP66 protection, or documented IMO D‑2/ABS/DNV approvals that are not confirmed for this exact model.

Use Cases: Typically installed as the main auxiliary generator on offshore supply ships, workboats, and ferries to run navigation equipment, lighting, HVAC and small cargo handling gear. Also used as an emergency backup unit on larger vessels where a dedicated 75 kVA set can quickly restore essential services after a primary failure.

Datasheet

GTW 100kVA 400V 50Hz Marine unverified

· four-pole marine alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact IP44 enclosure suitable for harsh marine environments
High insulation class (H) allows operation at elevated temperatures
Four‑pole design provides stable 50 Hz output with reduced vibration
Standard 400 V three‑phase output matches most shipboard distribution systems
Proven WEG brand reputation for reliability and service support

Weaknesses

Limited to 100 kVA – may be undersized for larger vessels or high‑power auxiliaries
IP44 rating does not protect against heavy water ingress; additional shielding may be required in wet spaces
No integrated engine; a separate prime mover must be supplied and matched
Documentation and spare parts availability can vary by region

Typical Vessels: Offshore supply vesselFerry (up to ~150 GT)Coastal cargo shipTugboatResearch or survey vessel

Decision Guide: Choose if: you need a reliable 100 kVA, four‑pole alternator for medium‑size vessels with existing prime‑mover arrangements and can accommodate an IP44 enclosure. Avoid if: the vessel requires higher power output, stricter ingress protection (e.g., IP65), or an all‑in‑one generator set with integrated engine.

Use Cases: Commonly installed as part of a diesel‑generator set on offshore supply ships to feed hotel loads, navigation equipment, and auxiliary systems; also used on ferries for shore‑power capability where space is limited.

Datasheet

GTW 100kVA 400V 60Hz Marine unverified

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact 4‑pole design suitable for limited engine room space
IP44 enclosure provides protection against splashing water and dust, meeting typical marine standards
Insulation class H allows operation up to 180 °C, enhancing durability in hot climates
WEG’s reputation for robust alternator construction and low maintenance requirements
100 kVA rating matches the electrical demand of many medium‑size vessels without oversizing

Weaknesses

Power output limited to 100 kVA; not sufficient for large cargo ships or high‑power auxiliaries
IP44 may be inadequate in areas exposed to heavy sea spray, requiring additional shielding
No integrated sound attenuation; extra mufflers may be needed for noise‑sensitive vessels
Lack of published dimensions and weight complicates installation planning
May require specific WEG engine pairing, limiting flexibility with alternative prime movers

Typical Vessels: Offshore Supply VesselCrew BoatFerrySmall TankerResearch Vessel

Decision Guide: Choose if: you need a reliable 100 kVA generator for medium‑size vessels, value high temperature insulation (Class H) and a compact footprint, and the operating environment does not demand higher ingress protection than IP44. Avoid if: the vessel requires more than 100 kVA, operates in heavy sea‑spray zones where IP65 or higher is required, or you need integrated noise reduction or detailed dimensional data for tight installations.

Use Cases: The GTW 100 kVA set is typically installed on offshore supply ships, crew transport ferries, small tankers and research vessels to provide auxiliary power for navigation equipment, hotel loads, and cargo handling systems. Its moderate rating makes it a cost‑effective choice where full shipboard power plants are unnecessary.

Datasheet

GTW 100kVA 440V 50Hz Marine unverified

· diesel‑driven marine generator set

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact footprint suitable for limited engine‑room space
IP44 enclosure offers good resistance to moisture and dust in harsh marine environments
Class H insulation allows operation at higher temperatures, improving reliability
Integrated control panel with automatic voltage regulation simplifies installation and monitoring
Proven WEG brand reputation for durability and low maintenance

Weaknesses

Maximum output of 100 kVA may be insufficient for larger vessels or high‑power auxiliary loads
Weight and mounting requirements can be significant for very small craft
Noise level is typical for diesel generators; additional silencing may be required in passenger areas
Limited to 50 Hz systems, not directly compatible with 60 Hz regional grids without a converter

Typical Vessels: Coastal cargo vesselsContainer feeder shipsTanker (small to medium size)Offshore supply vesselCruise ship auxiliary power unit

Decision Guide: Choose if: you need a reliable 100 kVA source for a vessel with limited engine‑room space, operate on a 50 Hz grid, and value proven WEG durability. Avoid if: the vessel requires higher power output, operates primarily on 60 Hz systems, or has strict noise‑abatement constraints without additional mitigation.

Use Cases: The GTW 100 kVA set is typically installed as an auxiliary generator on medium‑size commercial ships to supply hotel loads, navigation equipment, and emergency power. It is also used on offshore support vessels where space is at a premium but a robust, low‑maintenance power source is essential.

Datasheet

GTW 100kVA 440V 60Hz Marine unverified

· Marine synchronous alternator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact footprint and low weight relative to comparable 100 kVA units
IP44 enclosure offers protection against splashing water and dust in typical marine engine rooms
Class H insulation allows operation at higher temperatures, improving reliability in hot climates
Four‑pole design delivers stable 60 Hz output with low harmonic distortion
Widely supported by WEG service network for spare parts and technical assistance

Weaknesses

IP44 rating does not protect against heavy spray or immersion; additional shielding may be required in harsh environments
Designed for 440 V/60 Hz only – unsuitable for vessels that require 50 Hz or dual‑frequency capability
Requires an external cooling system (air‑forced) and separate sound attenuation for noise‑sensitive installations
Limited to standard terminal arrangements; custom connections may need engineering work

Typical Vessels: Offshore supply vesselsFerriesCruise ships (hotel load)Container ships (auxiliary power)Tankers (emergency generator)

Decision Guide: Choose if you need a reliable 100 kVA, 440 V/60 Hz alternator for US‑type vessels with limited space and want WEG’s global support. Avoid if the installation demands higher ingress protection (IP55+), dual‑frequency operation, or integrated generator‑set packaging.

Use Cases: Commonly installed as part of a diesel‑generator set to supply hotel services, navigation equipment, and emergency power on medium‑size commercial vessels; also used in hybrid propulsion schemes where the alternator feeds battery chargers or drives electric motors.

Datasheet

GTW 100kVA 690V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Robust WEG brand reputation for reliability and low maintenance
IP44 enclosure protects against splashing water in typical marine environments
Class H insulation permits operation at higher temperatures without derating
Four‑pole design provides stable 1500 rpm operation at 50 Hz, matching most ship power systems
Compact modular construction simplifies installation and integration with existing switchboards

Weaknesses

IP44 rating may be insufficient for harsh spray zones; higher IP ratings are not offered on this model
Limited to 690 V/50 Hz – not directly suitable for vessels requiring 60 Hz or different voltage levels without transformers
Air‑cooled design can be less efficient in very high ambient temperatures, potentially needing auxiliary cooling
Weight and footprint are typical of a 100 kVA unit but may be restrictive on space‑constrained vessels
No built‑in sound attenuation; additional muffling may be required for noise‑sensitive applications

Typical Vessels: Container shipsBulk carriersGeneral cargo vesselsOffshore supply vesselsFerries

Decision Guide: Choose if you need a proven 100 kVA auxiliary generator with solid WEG reliability, IP44 protection is adequate for your installation area, and you operate on a 50 Hz system. Avoid if the vessel requires higher ingress protection (IP55+), 60 Hz operation, or a smaller footprint than typical 100 kVA units.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, emergency power supply, cargo‑handling equipment, and start‑up of main propulsion engines on medium‑size commercial ships.

Datasheet

GTW 100kVA 690V 60Hz Marine unverified

· Four-pole synchronous marine generator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact footprint suitable for limited engine rooms or yacht installations
Class H insulation permits higher operating temperatures and improves durability
IP44 enclosure protects against splashing water and dust, meeting standard marine environmental requirements
Four‑pole design delivers smoother voltage and frequency stability at 60 Hz
Standard 690 V output integrates easily with common shipboard electrical systems

Weaknesses

Maximum output of only 100 kVA limits use on vessels with larger hotel loads or propulsion auxiliaries
IP44 rating may be insufficient for harsh offshore conditions where IP66 or higher is preferred
External cooling may be required in very hot climates to maintain optimal temperature
Spare‑part distribution can be limited in remote regions, potentially increasing lead times
Not specifically certified for USCG Type Approval (if that certification is a requirement)

Typical Vessels: YachtCoastal ferryOffshore supply vessel (small)Patrol boatResearch vessel

Certifications: IMO D-2

Decision Guide: Choose if: you need a reliable, space‑saving auxiliary generator up to 100 kVA for vessels with standard 690 V bus and typical marine environmental exposure. Avoid if: the vessel requires higher power output, operates in severe offshore conditions demanding IP66+ protection, or must meet specific USCG Type Approval requirements.

Use Cases: Commonly installed as an auxiliary generator on yachts and small commercial vessels to supply hotel loads, emergency lighting, navigation equipment, and cargo handling gear. Also used on offshore support boats where a compact, low‑maintenance power source is preferred for standby and peak‑shaving applications.

Datasheet

GTW 150kVA 400V 50Hz Marine unverified

· four‑pole synchronous generator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency typical of WEG synchronous designs
Robust class H insulation suitable for high temperature marine environments
IP44 protected enclosure resists splashing water and dust
Compact footprint compared with equivalent power diesel‑engine gensets
Standard 400 V three‑phase output matches most shipboard distribution systems

Weaknesses

Fixed 150 kVA rating may be insufficient for larger vessels requiring higher auxiliary power
Requires external diesel engine; not an integrated genset solution
Weight and mounting requirements can be demanding on smaller hulls
Limited to 400 V nominal; additional transformers needed for other voltage levels
No built‑in emission control – depends on the coupled engine

Typical Vessels: Coastal cargo vesselsOffshore supply shipsFerries (up to ~200 passengers)Medium‑size fishing vesselsYachts and luxury motorboats

Decision Guide: Choose if you need a reliable, compact 150 kVA synchronous generator with high temperature insulation and IP44 protection for medium‑sized ships or offshore workboats. Avoid if the vessel requires higher power output, an integrated engine‑generator set, or specific emission‑control certifications that are not confirmed for this model.

Use Cases: Typically installed as the main auxiliary generator on vessels where a dedicated diesel engine provides propulsion and a separate genset supplies shipboard electricity; also used as a standby generator on larger ships to ensure redundancy of critical systems such as navigation, communications, and cargo handling equipment.

Datasheet

GTW 150kVA 400V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact size relative to its 150 kVA rating, easing installation in limited engine‑room spaces
IP44 protected enclosure suitable for harsh marine environments (splashes, dust)
Class H insulation allows operation at elevated temperatures common on vessels
Four‑pole design provides stable frequency and lower vibration compared with two‑pole units
Widely compatible with standard 400 V/60 Hz shipboard distribution systems

Weaknesses

Only rated for 60 Hz; not directly usable on vessels that operate on 50 Hz grids without a converter
Requires an external prime mover (diesel engine) – the unit is an alternator only, adding system complexity
No integrated cooling system; may need additional fans or water‑cooling in high‑load applications
Limited publicly documented certifications; may require extra approval steps for USCG or ABS compliance
Weight and mounting dimensions are not disclosed in public data, complicating preliminary design studies

Typical Vessels: Offshore supply vesselPlatform support vesselCruise ship auxiliary power systemFerrySmall container or bulk carrier (auxiliary generator)

Decision Guide: Choose if you need a reliable 150 kVA, 400 V/60 Hz marine alternator with robust IP44 protection and high‑temperature insulation for auxiliary power on vessels that already use a 60 Hz distribution system. Avoid if your vessel operates on a 50 Hz grid, requires an all‑in‑one generator set with built‑in engine, or must meet specific USCG/ABS type‑approval certifications that are not pre‑listed for this model.

Use Cases: Typically installed as part of a diesel‑generator set to supply hotel loads, navigation equipment, cargo handling gear, and emergency power on offshore support ships, ferries, and cruise vessels where space is at a premium and environmental protection is required.

Datasheet

GTW 150kVA 440V 50Hz Marine unverified

· high‑efficiency marine alternator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact footprint and low weight relative to its power rating, saving valuable engine‑room space
High thermal efficiency (Class H) reduces fuel consumption and operating costs
IP44 enclosure provides reliable protection against spray and dust in harsh marine environments
Integrated digital control panel with remote monitoring simplifies operation and maintenance
Low noise and vibration levels improve crew comfort and meet many port‑noise regulations

Weaknesses

Maximum output of 150 kVA may be insufficient for larger vessels or high‑power hotel loads
Requires a compatible diesel engine; the generator set is not supplied as a turnkey package in all markets
Initial purchase price can be higher than basic, non‑protected alternators
Spare‑parts logistics depend on WEG’s regional service network, which may be limited in remote ports

Typical Vessels: Coastal cargo vesselsOffshore supply boatsFerries (up to ~3 000 GT)Patrol and coast guard shipsLarge yachts and fishing trawlers

Decision Guide: Choose if: you need a reliable 150 kVA auxiliary power source with a small footprint, high efficiency and good protection against marine exposure; the vessel’s power demand fits within this rating and you value integrated digital control. Avoid if: your vessel requires higher continuous power, has strict classification‑society type‑approval requirements not yet confirmed for this model, or budget constraints prioritize lower upfront cost over efficiency.

Use Cases: Typically installed as the main auxiliary generator on small to medium vessels, providing hotel load power, deck machinery operation and emergency standby supply. It is also used in retrofits where space is limited but a robust, low‑maintenance power source is required.

Datasheet

GTW 150kVA 440V 60Hz Marine unverified

· diesel-driven alternator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High insulation class H provides excellent thermal tolerance and durability.
Compact, modular design fits well into limited engine room spaces.
IP44 enclosure offers good protection against splash and dust in marine environments.
Integrated control panel with built-in protections simplifies operation and monitoring.
WEG’s reputation for robust engineering results in low routine maintenance.

Weaknesses

Maximum output of 150 kVA may be insufficient for larger vessels or high‑power hotel loads.
Standard sound level can be moderate; additional silencing enclosure may be required for noise‑sensitive applications.
Diesel fuel consumption and emissions are higher than newer hybrid or LNG alternatives.
Weight is relatively high compared with some lightweight aluminum generators of similar rating.

Typical Vessels: Offshore supply vesselCoastal cargo shipFerryPatrol boatLarge yacht

Decision Guide: Choose if you need a proven, compact 150 kVA generator for medium‑size vessels where space and reliability are priorities, and diesel fuel is acceptable. Avoid if the vessel requires higher power output, ultra‑low noise, or compliance with Tier III emission standards that this model may not meet.

Use Cases: Commonly installed as an auxiliary/main generator on offshore supply ships, ferries, and patrol vessels to supply hotel loads, emergency power, and support deck machinery; also used on large yachts for shore‑power generation.

Datasheet

GTW 150kVA 690V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Brushless design eliminates wear parts, reducing maintenance intervals.
Class H insulation permits higher operating temperatures, improving reliability in hot climates.
Four‑pole construction provides stable 50 Hz output suitable for standard shipboard distribution systems.
Compact IP44 enclosure fits tight engine rooms while protecting against splashing water.

Weaknesses

Maximum output of 150 kVA may be insufficient for larger vessels requiring higher auxiliary power.
IP44 rating does not protect against dust or heavy spray, limiting placement in the most exposed locations.
Requires a dedicated cooling‑water circuit; integration can add complexity on smaller hulls.

Typical Vessels: Medium-sized tankersContainer ships (up to ~5 000 TEU)Offshore supply vesselsFerries and cruise ship auxiliary power units

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable, low‑maintenance 150 kVA generator for standard 690 V/50 Hz shipboard systems and have space for an IP44 enclosure with cooling‑water support. Avoid if the vessel requires higher power ratings, stricter ingress protection (e.g., IP65), or a completely self‑contained air‑cooled unit.

Use Cases: Typically installed as an auxiliary generator supplying hotel loads, cargo‑handling equipment, and emergency power on medium‑size commercial vessels; also used as a standby unit for main propulsion generators on ships with limited space.

Datasheet

GTW 150kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High insulation class H provides excellent thermal endurance and overload capability.
IP44 enclosure protects against splashing water and dust, suitable for harsh marine environments.
Compact footprint relative to its 150 kVA rating, easing installation in limited engine‑room space.
Proven WEG reputation for durability and low maintenance intervals.

Weaknesses

Maximum output of 150 kVA may be insufficient for larger vessels or high‑power demand scenarios.
Standard IP44 protection does not guard against direct water jets; additional shielding may be required in heavy spray zones.
Noise level is typical of conventional diesel‑driven gensets; may need extra acoustic insulation on passenger ships.

Typical Vessels: Offshore supply vesselCoastal cargo ferryMedium‑size bulk carrierFishing trawlerYacht

Decision Guide: Choose if: you need a robust, compact 150 kVA generator with high thermal rating for auxiliary or emergency power on medium vessels. Avoid if: the vessel requires higher continuous power, stricter emission standards, or protection beyond IP44 in heavy spray areas.

Use Cases: Commonly installed as the main auxiliary generator supplying shipboard electricity for lighting, HVAC, cargo handling equipment, and as an emergency source when shore power is unavailable.

Datasheet

GTW 200kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency typical of WEG designs (often >95% at rated load)
Robust cast‑iron frame and Class H insulation suitable for harsh marine environments
Compact footprint relative to power rating, easing installation in engine rooms
Low vibration and noise levels when paired with compatible diesel engines
Standard 4‑pole construction provides good overload capability (up to 110% for short periods)

Weaknesses

IP44 enclosure may require additional protection against splashing water or corrosive atmospheres in extreme conditions
Fixed 400 V/50 Hz output limits use on vessels that operate on 60 Hz systems without a frequency converter
Weight is relatively high compared with newer lightweight aluminum‑frame generators of similar rating
Optional monitoring and control packages add to overall cost and installation time
Limited availability of detailed performance curves in public catalogs, requiring direct manufacturer consultation

Typical Vessels: Container shipBulk carrierTankerRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑efficiency 200 kVA generator for a 400 V/50 Hz marine power system and value robust construction with standard overload capability. Avoid if: the vessel operates on 60 Hz, requires a higher IP rating, or weight and space constraints favor newer lightweight aluminum designs.

Use Cases: The GTW 200kVA is typically installed as the main auxiliary generator on medium‑size cargo vessels, providing shipboard electricity for hotel loads, navigation equipment, and emergency power. It is also used in offshore support ships where a reliable, low‑maintenance source of 400 V three‑phase power is required.

Datasheet

GTW 200kVA 400V 60Hz Marine unverified

· synchronous diesel generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Insulation class H provides excellent thermal endurance for hot engine rooms.
IP44 enclosure protects against splashing water and dust, suitable for harsh marine conditions.
Four‑pole design runs at 1500 rpm on 60 Hz systems, offering stable frequency output.
Integrated control panel with automatic voltage regulation simplifies installation and operation.
Proven WEG reliability with a long service life and straightforward maintenance.

Weaknesses

Limited to 60 Hz operation; not suitable for vessels requiring 50 Hz power.
200 kVA may be undersized for large cruise ships or tankers with high hotel loads.
Weight and footprint are typical of conventional generators, not as light as some newer compact units.
No built‑in redundancy; a second set is required for critical emergency power.
Cooling relies on natural ventilation (IP44), which may be less effective in extremely hot climates.

Typical Vessels: Offshore supply vesselFerryMedium‑size container shipTanker (product carriers)Cruise ship auxiliary system

Decision Guide: Choose if you need a mid‑size, robust auxiliary generator with high temperature tolerance and marine‑grade enclosure for a 60 Hz fleet. Avoid if your vessel requires 50 Hz power, higher than 200 kVA capacity, or ultra‑lightweight equipment for space‑critical installations.

Use Cases: Commonly installed to supply hotel load electricity, run cargo handling gear, provide emergency standby power, and support auxiliary systems such as pumps, ventilation fans, and navigation equipment on commercial vessels.

Datasheet

GTW 200kVA 440V 50Hz Marine unverified

· synchronous alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact, marine‑rated IP44 enclosure suitable for harsh sea environments
Class H insulation provides high thermal tolerance and longer life
Standard 440 V/50 Hz output matches most shipboard electrical systems
Low maintenance design with brushless excitation (if equipped) reduces downtime
Proven WEG brand reputation for reliability and after‑sales support

Weaknesses

Fixed 200 kVA rating may be undersized for larger vessels or high hotel loads
IP44 enclosure is not explosion‑proof, limiting use in hazardous zones
No built‑in emission control (e.g., SCR) – may not meet strict Tier 4/IMO Tier III regs without additional treatment
Limited to 50 Hz markets; not directly compatible with 60 Hz regions without rewinding

Typical Vessels: Offshore supply vesselMedium‑size tankerContainer feederFerryResearch or survey ship

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator for vessels operating on 440 V/50 Hz systems, where compact size and robust marine enclosure are priorities. Avoid if the vessel requires higher power output, explosion‑proof protection, or compliance with the latest low‑emission standards without additional after‑treatment equipment.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, deck machinery, navigation systems, and emergency power on medium‑sized commercial ships. Also used in standby configurations where rapid start‑up and high reliability are essential.

Datasheet

GTW 200kVA 440V 60Hz Marine unverified

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Robust four‑pole design (1800 rpm) provides stable output and good overload capability
Class H insulation tolerates high ambient temperatures common in tropical waters
IP44 enclosure offers protection against splashing water while keeping maintenance simple
Proven WEG brand reputation for durability and low life‑cycle cost
Standard 60 Hz frequency matches most US‑type shipboard electrical systems

Weaknesses

IP44 rating is not fully dust‑tight; unsuitable for harsh, dusty engine rooms without extra protection
Physical size and weight are relatively high compared with some compact Chinese alternatives
Limited to 440 V output – vessels standardising on 415 V may need a transformer or re‑wiring
Initial purchase price can be higher than lower‑spec generators of similar power
Noise level is moderate; additional acoustic insulation may be required for passenger ships

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise linerFerry

Decision Guide: Choose if: you need a dependable 200 kVA auxiliary generator with high‑temperature insulation and a reputable OEM support network, especially for vessels operating in warm climates. Avoid if: space, weight or dust protection are critical constraints, or if the budget does not allow for a premium‑priced unit.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, cargo handling equipment, and emergency power on medium‑size merchant ships; also used as a standby generator on offshore platforms where reliability is paramount.

Datasheet

GTW 200kVA 690V 50Hz Marine unverified

· brushless marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact, high‑power density suitable for vessels with limited engine‑room space
Brush‑less design reduces maintenance intervals and eliminates brush wear issues
Robust IP44 enclosure provides protection against splashing water and dust in typical shipboard environments
Integrated control panel compatible with standard marine automation systems
Good overload capability (typically 110 % for 30 min) for peak demand periods

Weaknesses

Air‑cooled design may be less efficient than water‑cooled units in very hot climates
IP44 rating may not meet requirements for harsh offshore exposure where higher ingress protection is demanded
Maximum output of 200 kVA limits use on larger vessels that need >500 kVA auxiliary power
Weight is relatively high compared with newer lightweight aluminum‑frame generators

Typical Vessels: Offshore Supply Vessel (OSV)Platform Supply Vessel (PSV)FerrySmall cruise shipResearch vesselTugboat

Certifications: ABS Type ApprovalDNV‑GL ClassificationIEC 60034 compliance

Decision Guide: Choose if: you need a reliable 200 kVA, 690 V brushless generator for medium‑size vessels with limited space and standard marine automation integration. Avoid if: the vessel requires higher power output, water‑cooled cooling, or an enclosure rating above IP44 for extreme offshore conditions.

Use Cases: Typically installed as auxiliary power on OSVs and ferries to run hotel loads, navigation equipment, cargo handling gear, and emergency systems. Also used on research ships where low maintenance and compact size are critical.

Datasheet

GTW 200kVA 690V 60Hz Marine unverified

· marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact size relative to its 200 kVA rating, saving installation space
Class H insulation allows operation in high ambient temperatures typical on ships
IP44 enclosure provides protection against splashing water and dust in marine environments
Four‑pole construction gives good low‑speed torque characteristics when coupled to diesel engines
Proven WEG reputation for reliability and long service intervals

Weaknesses

Only available as an alternator; requires a separate diesel engine and control panel, increasing total system cost
Fixed 690 V three‑phase output may not match all vessel electrical architectures without step‑down transformers
Weight can be significant for retrofit projects where weight savings are critical
No built‑in emission controls – overall emissions depend on the coupled prime mover
Limited overload capability compared with some high‑performance competitors

Typical Vessels: Offshore supply vesselPlatform support vesselFerrySmall cruise shipResearch / survey vessel

Decision Guide: Choose if: you need a reliable 200 kVA auxiliary power source for a medium‑size vessel, have space constraints, and can provide a compatible diesel engine. Avoid if: you require an all‑in‑one generator set with integrated controls, need higher overload capacity, or must meet strict emission limits without additional treatment equipment.

Use Cases: The GTW 200 kVA alternator is typically installed as part of an auxiliary power plant on offshore support ships and ferries, supplying hotel loads, deck machinery, and emergency systems. It is also used in research vessels where a stable, high‑temperature tolerant power source is essential for scientific equipment.

Datasheet

GTW 250kVA 400V 50Hz Marine unverified

· marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact, robust design with IP44 protection suitable for harsh marine environments
Class H insulation allows reliable operation at elevated temperatures
Four‑pole construction provides smooth voltage output and reduced ripple
Standard 400 V/50 Hz rating matches most European‑type shipboard electrical systems
Widely supported by WEG’s global service network for spare parts and maintenance

Weaknesses

Fixed 400 V/50 Hz output – not directly compatible with vessels requiring 60 Hz or different voltage levels
Requires a separate diesel engine or prime mover; the alternator itself is not a complete genset
Weight and mounting dimensions can be significant for smaller craft
IP44 rating protects against splashing water but not full dust‑tight environments
Limited to 250 kVA – may be undersized for large vessels with higher power demands

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise liner (auxiliary power)Ferry

Decision Guide: Choose if you need a reliable 250 kVA, 400 V/50 Hz marine alternator with proven durability and WEG support for medium‑size vessels operating in temperate climates. Avoid if your vessel requires 60 Hz power, higher voltage levels, or a fully integrated generator set without sourcing an external prime mover.

Use Cases: The GTW 250 kVA is typically installed as the main auxiliary generator on mid‑size cargo ships and offshore support vessels, providing shipboard electricity for hotel loads, navigation systems, and emergency power when coupled with a diesel engine. It is also used in retrofit projects where space and weight constraints favor a compact, high‑temperature capable alternator.

Datasheet

GTW 250kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High insulation class (H) provides excellent heat resistance and reliability in harsh marine environments
IP44 rated enclosure protects against splashing water and dust, suitable for deck‑mounted installations
Four‑pole design ensures stable frequency output at 60 Hz with low vibration
Compact modular construction simplifies integration into existing engine rooms
WEG’s long track record in marine power equipment offers strong after‑sales support

Weaknesses

Fixed 400 V/60 Hz output limits use on vessels that operate on 50 Hz systems without a transformer
Weight and dimensions typical of a 250 kVA set may be restrictive for very small craft with limited engine‑room space
Initial purchase price can be higher than some lower‑brand alternatives
Requires a compatible diesel or gas engine; the alternator is not sold as a standalone turnkey generator set in all markets
IP44 protection does not cover full submersion, so placement must avoid direct water ingress

Typical Vessels: Coastal cargo vesselsContainer feeder shipsTugboatsOffshore support and supply vesselsFerries and passenger craft up to medium size

Decision Guide: Choose if: you need a reliable 250 kVA auxiliary power source at 400 V/60 Hz, operate in warm or humid marine climates, and value WEG’s service network. Avoid if: your vessel runs on 50 Hz electrical systems, space and weight are extremely limited, or budget constraints outweigh the benefits of higher‑grade insulation and brand support.

Use Cases: The GTW 250 kVA is typically installed as the main auxiliary generator on medium‑sized commercial vessels, providing power for hotel loads, cargo handling equipment, and emergency systems. It also serves as a standby generator in dual‑set configurations where redundancy is required.

Datasheet

GTW 250kVA 440V 50Hz Marine unverified

· diesel‑driven synchronous generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact footprint with integrated control panel reduces installation space
IP44 sealed enclosure provides good protection against spray and dust in harsh sea environments
Class H insulation allows higher temperature operation, extending service intervals
Four‑pole design delivers smooth 50 Hz output suitable for most vessel electrical systems
Proven WEG reliability with a global support network

Weaknesses

Fixed 440 V output may require additional transformers for vessels using other voltage standards
Weight and dimensions are typical of a 250 kVA set, limiting use on very small craft
Requires diesel fuel; not directly compatible with LNG or hybrid propulsion schemes
No built‑in exhaust after‑treatment beyond standard diesel engine emissions controls

Typical Vessels: Offshore supply vesselFerryMedium‑size container shipTugboatCoastal cargo vessel

Decision Guide: Choose if: you need a reliable 250 kVA main or standby generator for vessels operating on diesel, require IP44 protection and Class H insulation, and value WEG's global service support. Avoid if: the vessel uses alternative fuels (LNG, hybrid), needs a different voltage level without additional conversion equipment, or has severe weight/space constraints.

Use Cases: Typically installed as the primary propulsion auxiliary generator on offshore supply vessels, as emergency power on ferries and tugs, or as a secondary generator on medium‑size cargo ships to meet redundancy requirements.

Datasheet

GTW 250kVA 440V 60Hz Marine unverified

· diesel‑driven marine alternator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High temperature class H allows operation in hot engine rooms.
IP44 enclosure provides protection against splashing water and dust on deck installations.
Four‑pole design delivers stable 60 Hz output at typical 1800 rpm shaft speed.
Compact footprint compared with equivalent power rating from many competitors.
Widely supported by WEG’s global service network for spare parts and maintenance.

Weaknesses

IP44 is not fully sealed; unsuitable for locations exposed to heavy spray or immersion.
250 kVA may be undersized for larger vessels requiring high auxiliary power.
No built‑in emission control package (e.g., SCR) – additional treatment required for Tier III compliance.
Limited voltage flexibility; only 440 V standard without optional tap‑changing.

Typical Vessels: Offshore supply vesselPlatform support vesselCoastal tankerFerryMedium‑size container ship

Certifications: ABSDNV GLIEC 60034‑2‑1ISO 8528

Decision Guide: Choose if you need a reliable, compact 250 kVA generator with good heat tolerance for medium‑size vessels and can accommodate an IP44 enclosure. Avoid if the installation requires higher power, full water‑tight protection (IP65+), or built‑in Tier III emission controls.

Use Cases: Typically installed as the main auxiliary generator on offshore support ships, as emergency power on ferries, or to supply deck machinery and hotel loads on medium cargo vessels where space and weight are at a premium.

Datasheet

GTW 250kVA 690V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High thermal class (H) allows reliable operation in hot engine rooms.
IP44 enclosure provides good resistance to water spray and dust typical on vessels.
Four‑pole design delivers stable 50 Hz output with low harmonic distortion.
Compact footprint relative to its 250 kVA rating, easing installation in limited spaces.
Widely supported by WEG’s global service network, simplifying spare‑parts logistics.

Weaknesses

Fixed 690 V output limits flexibility for vessels that require dual‑voltage (e.g., 440/660 V) systems.
No built‑in cooling fan; relies on external ventilation which must be correctly sized.
Weight and mounting requirements may be higher than some low‑profile competitors.
Limited to 50 Hz operation, unsuitable for vessels that need 60 Hz power without conversion.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven 250 kVA generator with robust temperature and ingress protection for 690 V/50 Hz shipboard distribution and value WEG’s service network. Avoid if: your vessel requires dual‑voltage capability, 60 Hz power, or a lighter, low‑profile unit.

Use Cases: Commonly installed as an auxiliary generator set supplying hotel loads, navigation equipment, and emergency power on medium‑size cargo vessels and offshore support ships where reliable 690 V/50 Hz supply is required.

Datasheet

GTW 250kVA 690V 60Hz Marine unverified

· marine diesel generator set

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

250 kVA output matches the demand of medium‑size vessels while keeping a small footprint
IP44 enclosure provides protection against splashing water and dust in typical engine rooms
Class H insulation allows operation at elevated temperatures without derating
Four‑pole design ensures stable 60 Hz frequency under varying loads
WEG’s reputation for robust construction results in low routine maintenance

Weaknesses

Requires a dedicated diesel fuel supply and associated exhaust handling
IP44 rating may be insufficient for areas exposed to heavy sea spray or direct immersion
Designed for 60 Hz only; vessels operating on 50 Hz grids would need a different model or derating
Higher initial capital cost compared with lower‑rated generator sets

Typical Vessels: Offshore support vesselFerryPatrol boatTugboatWorkboatSmall cruise ship

Decision Guide: Choose if: you need a reliable 250 kVA source for a 60 Hz marine installation, space is limited, and the engine room environment matches IP44 protection. Avoid if: the vessel operates on a 50 Hz system, requires higher splash‑proofing (IP65+), or budget constraints favor a lower‑rated unit.

Use Cases: Typically installed in the main engine room of medium‑size commercial vessels to supply auxiliary power for navigation equipment, hotel services, and cargo handling systems. Frequently paired with diesel engines as part of an integrated generator set for continuous operation during port stays and underway periods.

Datasheet

GTW 315kVA 400V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency (up to ~96%) reduces fuel consumption of the coupled engine
Robust IP44 enclosure protects against spray and dust in harsh sea environments
Class H insulation allows reliable operation at elevated ambient temperatures
Compact, modular design simplifies installation on a wide range of vessels
Widely accepted by classification societies, easing type‑approval processes

Weaknesses

Requires periodic brush inspection/maintenance (if brushed version is specified)
Weight can be significant for very space‑constrained installations
Fixed 400 V output may need additional transformers for vessels requiring other voltages
Limited to diesel‑engine drive; not directly compatible with LNG or hybrid prime movers

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise linerFerry

Certifications: ABSDNV‑GLLloyd's Register

Decision Guide: Choose if you need a proven, high‑efficiency 315 kVA generator with strong temperature tolerance and classification‑society approval for medium‑size commercial vessels. Avoid if vessel space is extremely limited, you require a higher voltage output without additional conversion equipment, or you plan to pair the alternator with non‑diesel prime movers.

Use Cases: Typically installed as an auxiliary or emergency generator on merchant ships to supply hotel loads, navigation systems and cargo handling equipment; also used in offshore platforms where reliable, temperature‑resistant power is critical.

Datasheet

GTW 315kVA 400V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency synchronous design matched to standard 1500 rpm diesel engines (4‑pole at 60 Hz).
IP44 sealed enclosure provides protection against splashing water and dust in harsh marine environments.
Class‑H insulation allows operation at elevated temperatures, extending service life on board.
Compact modular construction simplifies installation and maintenance in confined engine rooms.
Built‑in monitoring interfaces compatible with common shipboard control systems.

Weaknesses

Designed for 60 Hz only; not directly suitable for vessels operating on 50 Hz power grids.
IP44 rating does not protect against full submersion or heavy spray, requiring additional shielding in extreme conditions.
Weight and dimensions are typical of a 315 kVA unit, which may be limiting for small craft with tight space constraints.
Single‑unit configuration offers limited redundancy; multiple sets required for critical standby power.

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselNaval auxiliary

Decision Guide: Choose if you need a reliable 315 kVA, 400 V, 60 Hz power source for vessels operating on 60 Hz grids and value WEG's reputation for durability and low maintenance. Avoid if your vessel requires 50 Hz operation, has severe exposure to water spray beyond IP44 protection, or demands ultra‑lightweight equipment.

Use Cases: Typically installed as part of the main auxiliary generator set on medium‑to‑large commercial vessels, providing shipboard electricity for propulsion auxiliaries, hotel services, and emergency power. Also used in dedicated emergency generator rooms where rapid start‑up and high temperature tolerance are required.

Datasheet

GTW 315kVA 440V 50Hz Marine unverified

· diesel-driven synchronous generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High thermal class (H) allows operation in hot engine rooms without derating.
IP44 enclosure provides protection against splashing water and dust, suitable for marine environments.
Compact footprint relative to its 315 kVA rating, easing installation on medium‑size vessels.
Integrated control panel with built-in protection functions reduces auxiliary wiring.
Proven WEG reputation for durability and low maintenance intervals.

Weaknesses

Maximum output of 315 kVA may be insufficient for larger ships or high‑power hotel loads.
Diesel fuel consumption can be higher than newer hybrid or LNG alternatives, affecting emission compliance in strict ECAs.
Weight and mounting requirements are typical of conventional marine generators, limiting retrofit flexibility on space‑constrained vessels.
Standard 440 V/50 Hz output may need additional transformers for vessels operating on different voltage/frequency standards.

Typical Vessels: Coastal tankerFerryOffshore supply vesselResearch vesselMedium‑size yacht

Decision Guide: Choose if you need a reliable, mid‑range power source with robust protection (IP44) and high temperature capability for vessels up to ~300 kW auxiliary load. Avoid if the ship requires higher power output, ultra‑low emissions (e.g., LNG or hybrid), or operates primarily in strict emission control areas where diesel generators are penalised.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size commercial vessels to supply hotel services, navigation equipment, and emergency power. Also used on offshore support ships where a compact, rugged generator is needed for continuous operation in harsh sea conditions.

Datasheet

GTW 315kVA 440V 60Hz Marine unverified

· diesel-driven marine alternator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Robust marine‑grade IP44 enclosure protects against splashing water and dust.
Class H insulation allows operation at higher ambient temperatures typical on ships.
Integrated control panel with automatic voltage regulation simplifies installation and operation.
High overload capability (typically 110 % for 30 min) supports peak hotel loads.
Proven WEG reliability and long service intervals reduce maintenance downtime.

Weaknesses

Relatively heavy and bulky compared with newer compact generator sets, impacting space planning.
Fixed 440 V output may require step‑up/down transformers for vessels standardising on 690 V systems.
Initial acquisition cost can be higher than some competing brands without a global dealer network.
Spare parts logistics may be slower in regions where WEG has limited service centers.

Typical Vessels: Offshore Supply VesselFerryMid‑size Cruise ShipContainer FeederGeneral Cargo / Bulk Carrier

Decision Guide: Choose if you need a mid‑range (≈315 kVA) auxiliary generator with proven marine‑grade protection, high temperature insulation and integrated control for vessels operating on 440 V systems. Avoid if the vessel requires higher voltage (e.g., 690 V), ultra‑compact footprint, or if local support for WEG products is limited.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel loads, navigation equipment, and emergency power on medium‑size commercial vessels; also used to run ballast pumps, cargo handling gear, and shore‑power conversion systems where a reliable 440 V source is required.

Datasheet

GTW 315kVA 690V 50Hz Marine unverified

· synchronous alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (315 kVA) at a standard marine voltage of 690 V
IP44 enclosure provides protection against splashing water, suitable for deck‑mounted installations
Class H insulation allows operation at elevated temperatures up to ~180 °C
WEG’s reputation for reliability and long service life in marine environments
Compact, modular design simplifies integration into existing electrical rooms

Weaknesses

Designed for 50 Hz only – not directly compatible with vessels that operate on 60 Hz systems
IP44 rating does not protect against dust ingress; additional sealing may be required in dusty compartments
Higher terminal voltage (690 V) may necessitate step‑down transformers for some low‑voltage distribution schemes
Cooling system requirements must match ship’s ventilation layout, potentially adding complexity
Spare parts and service support can be limited in regions without an established WEG marine network

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose if: you need a robust 315 kVA marine alternator operating at 690 V/50 Hz, require high temperature tolerance (Class H), and value WEG’s proven reliability. Avoid if: your vessel runs on 60 Hz power, demands dust‑tight enclosures, or you have limited access to WEG service centres.

Use Cases: Commonly installed as auxiliary generators for main propulsion support, hotel load supply, or emergency power on medium‑size merchant ships where a compact, high‑temperature tolerant alternator is required.

Datasheet

GTW 315kVA 690V 60Hz Marine unverified

· diesel-driven synchronous generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power density – 315 kVA in a relatively small footprint suitable for limited engine rooms.
Robust construction with IP44 protection and Class H insulation, allowing operation in high‑temperature and humid marine conditions.
Four‑pole design provides stable 60 Hz output with low harmonic distortion, ideal for sensitive hotel‑load equipment.
Integrated control interface compatible with common ship automation systems (e.g., NMEA 2000, IEC 61850).
Proven WEG reliability and long service intervals reduce maintenance downtime.

Weaknesses

Standard IP44 enclosure may require additional soundproofing for noise‑sensitive vessels.
Fixed voltage of 690 V limits flexibility if a vessel standardizes on 440 V or 11 kV busbars.
No built‑in exhaust after‑treatment; compliance with stricter emission zones may need external SCR/DPF systems.
Weight and mounting dimensions are not disclosed here, requiring verification against available space.
Limited to 60 Hz operation – not directly suitable for vessels that run on 50 Hz power grids without a frequency converter.

Typical Vessels: Offshore supply vesselPlatform supply vesselMedium‑size container shipCruise ferryCoastal tanker

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 315 kVA auxiliary power source for a 60 Hz vessel, require high temperature tolerance and compact size, and can accommodate optional sound‑attenuation measures. Avoid if your ship operates on 50 Hz, demands lower acoustic emissions out of the box, or must meet stricter emission standards without additional after‑treatment equipment.

Use Cases: Typically installed as an auxiliary generator set to supply hotel loads, cargo handling gear, navigation and communication systems on offshore support vessels and medium‑size merchant ships. Also used on cruise ferries for redundancy and peak‑load shaving during port stays.

Datasheet

GTW 400kVA 400V 50Hz Marine unverified

· diesel-driven synchronous generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power density delivers 400 kVA in a relatively compact footprint
IP44 enclosure protects against splashing water and dust typical on deck
Class H insulation permits operation up to 180 °C, enhancing durability
Integrated control system with remote monitoring simplifies operation and maintenance
Proven WEG marine reliability with low scheduled maintenance intervals

Weaknesses

Weight and overall dimensions may limit installation in vessels with tight space constraints
Fixed 400 V/50 Hz output is unsuitable for ships requiring 60 Hz or different voltage configurations without additional equipment
Emission compliance generally limited to Euro III, not the latest Tier III standards required in many emission control areas
Noise level higher than some newer low‑speed generator sets
Requires diesel fuel supply and associated handling infrastructure

Typical Vessels: Container ShipBulk CarrierTankerOffshore Supply VesselCruise ShipFerry

Decision Guide: Choose if you need a robust 400 kVA auxiliary power source, have space for a standard IP44 marine generator and operate primarily in regions where 50 Hz is the norm. Avoid if vessel design demands higher voltage, 60 Hz frequency, ultra‑low emissions or extremely compact equipment.

Use Cases: Provides main ship service power for hotel loads, cargo handling equipment, navigation systems, and can serve as an emergency generator on medium to large commercial vessels.

Datasheet

GTW 400kVA 400V 60Hz Marine unverified

· four-pole synchronous alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High thermal class (H) insulation allows operation in elevated temperature zones.
Robust IP44 enclosure provides protection against splashing water and dust on deck installations.
Four‑pole construction gives a stable 60 Hz output with reduced ripple, ideal for sensitive hotel loads.
Compact footprint relative to comparable 400 kVA units, easing integration into limited engine‑room space.
Widely supported by WEG’s global service network and spare‑parts logistics.

Weaknesses

Designed for 60 Hz only; not directly suitable for vessels operating on 50 Hz power systems without frequency conversion.
Requires external prime mover (diesel engine) – the alternator itself is not a complete generator set.
Weight and mounting dimensions are significant, limiting use on very small craft or retrofits with tight space constraints.
Standard cooling relies on forced air; high ambient temperatures may necessitate additional ventilation or water‑cooling upgrades.
Limited to 400 V output – vessels needing higher bus voltages must cascade multiple units.

Typical Vessels: Offshore supply vesselFerry / Ro‑RoCruise ship (hotel load)Container ship (auxiliary power)Tanker (emergency generator)

Decision Guide: Choose if: you need a reliable 400 kVA, 400 V/60 Hz source for hotel or emergency power on vessels that already have a diesel prime mover and operate in US‑type electrical systems. Avoid if: the vessel runs on 50 Hz grids, has strict weight/space limits, or requires higher bus voltages without additional conversion equipment.

Use Cases: The GTW 400kVA is typically installed as an auxiliary generator for hotel services, emergency power supply, and secondary propulsion support on medium‑size commercial ships where a dedicated diesel engine drives the alternator to meet US‑standard electrical loads.

Datasheet

GTW 400kVA 440V 50Hz Marine unverified

· brushless marine alternator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency (~95%) reduces fuel consumption
Integrated control panel simplifies installation and monitoring
Robust IP44 enclosure protects against splashing water and dust
Class H insulation allows operation at elevated temperatures
Compact footprint compared with older 400 kVA generators

Weaknesses

Fixed 50 Hz output limits use on vessels requiring 60 Hz systems
IP44 rating may need additional shielding in heavy spray environments
Diesel‑only fuel system – no dual‑fuel option
Weight is higher than some newer lightweight aluminum‑frame generators
Limited overload duration (typically 110% for 30 min) compared with some competitors

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑efficiency 400 kVA auxiliary generator with integrated control and robust marine protection for 50 Hz vessels. Avoid if your vessel operates on a 60 Hz power system, requires dual‑fuel capability, or has strict weight/space constraints.

Use Cases: Commonly installed as the main auxiliary generator on medium‑to‑large merchant ships, providing power for hotel loads, cargo handling equipment, and emergency systems; also used in offshore platforms where reliable standby power is critical.

Datasheet

GTW 400kVA 440V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High thermal endurance (Class‑H insulation) suitable for continuous operation
IP44 enclosure protects against splashing water and dust in engine rooms
Four‑pole design provides stable frequency and good voltage regulation at 60 Hz
Compact, purpose‑built marine rating simplifies installation on vessels
WEG brand reputation for reliability and long service intervals

Weaknesses

IP44 protection is not fully sealed; may require additional shielding in very wet areas
Fixed 440 V output limits compatibility with systems that use higher bus voltages (e.g., 660 V)
No integrated control panel – requires external governor/monitoring equipment
Weight and dimensions are typical of a 400 kVA set, which can be substantial for smaller vessels

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselFPSOCruise ship (auxiliary power)

Decision Guide: Choose if you need a robust 400 kVA marine generator with proven thermal endurance, IP44 protection and standard 440 V/60 Hz output for vessels that already use this bus voltage. Avoid if your vessel requires higher voltage buses, fully sealed enclosures (IP65+), or an integrated control package.

Use Cases: Typically installed as the main auxiliary generator on medium‑to‑large commercial ships, providing shipboard electricity for hotel loads, cargo handling equipment, and emergency power. Also used on offshore platforms where a reliable, weather‑protected source of 400 kVA is required.

Datasheet

GTW 400kVA 690V 50Hz Marine unverified

· diesel-driven marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

400 kVA output matches standard shipboard voltage (690 V) for easy integration
IP44 enclosure provides protection against splashing water and dust in harsh marine environments
Class H insulation allows operation at elevated temperatures, enhancing durability
Four‑pole design ensures stable frequency under varying load conditions
Integrated control panel offers comprehensive monitoring and built‑in protection functions

Weaknesses

Physical size and weight are larger than some newer compact generator sets
Diesel fuel consumption may not satisfy emerging low‑emission regulations without additional after‑treatment
Spare‑parts logistics depend on regional WEG support, which can affect downtime
Fixed 690 V output requires a transformer for vessels using different bus voltages
No factory‑installed exhaust after‑treatment (e.g., SCR) for NOx reduction

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise linerFerry

Decision Guide: Choose if you need a proven 400 kVA diesel generator with robust IP44 protection and class H insulation for standard 690 V shipboard systems. Avoid if your vessel requires lower emissions technology, tighter space constraints, or operates on a different voltage bus without a transformer.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, cargo handling equipment, navigation systems, and emergency power generation on medium‑size commercial vessels.

Datasheet

GTW 400kVA 690V 60Hz Marine unverified

· high‑efficiency wound‑rotor alternator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Insulation class H allows operation at higher ambient temperatures, reducing cooling load.
Four‑pole design matches the 1800 rpm speed of most marine diesel engines on a 60 Hz system.
IP44 enclosure protects against splashing water and dust, suitable for typical engine room environments.
Compact modular construction simplifies installation and maintenance on crowded vessel decks.
WEG’s global support network provides spare parts availability and proven reliability.

Weaknesses

IP44 rating is not fully sealed; harsh salt‑spray areas may require additional protective measures.
Limited to 690 V/60 Hz, so vessels operating on 50 Hz or higher voltage standards need a different model.
Brush and slip‑ring maintenance required for the wound‑rotor design.
Weight and dimensions are comparable to other 400 kVA units, which may be a constraint in very space‑limited installations.

Typical Vessels: Container shipBulk carrierRo‑Ro vesselOffshore supply vesselCruise shipNaval auxiliary

Certifications: IEC 60034-1 (Rotating electrical machines)ISO 8528-5 (Generator sets – Performance requirements)

Decision Guide: Choose if: you need a reliable 400 kVA, 690 V, 60 Hz alternator with high temperature capability and WEG’s service network; the vessel operates on 60 Hz systems and can accommodate an IP44 enclosure. Avoid if: the ship requires 50 Hz operation, higher voltage levels (e.g., 440/660 V), or a fully sealed NEMA‑rated unit for extreme marine exposure.

Use Cases: Commonly installed as the alternator in diesel‑driven generator sets that supply main auxiliary power, emergency power, and hotel loads on medium‑size commercial vessels, especially where space is limited and high reliability is required.

Datasheet

GTW 500kVA 400V 50Hz Marine unverified

· diesel‑driven synchronous generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous output of 500 kVA suitable for large hotel loads
Robust IP44 enclosure protects against splashing water and dust
Class H insulation allows operation in high ambient temperatures
Four‑pole design provides stable frequency and lower vibration
WEG’s proven reliability and global service network

Weaknesses

IP44 rating is not fully sealed; additional protection may be required in very wet areas
Large physical footprint and weight demand ample engine room space
Designed for 50 Hz only – not ideal for vessels standardized on 60 Hz systems
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Container shipsCruise linersOil & chemical tankersLNG carriersOffshore supply vessels

Decision Guide: Choose if you need a reliable 500 kVA auxiliary generator for a 400 V/50 Hz vessel with demanding temperature conditions and can accommodate its size. Avoid if your ship operates on 60 Hz, requires a fully sealed (IP66+) unit, or has strict space‑weight constraints.

Use Cases: Mainly installed as part of the ship’s auxiliary power plant to supply hotel services, cargo handling equipment, and emergency generators; frequently paired with diesel engines in dual‑fuel configurations on large commercial vessels.

Datasheet

GTW 500kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High thermal tolerance (Class H) allows reliable operation in hot engine rooms.
Robust IP44 enclosure provides protection against splashing water and dust typical on vessels.
Four‑pole design ensures stable frequency and low vibration at 60 Hz.
WEG’s reputation for durability translates into long service intervals and low maintenance.
Compact footprint relative to other 500 kVA units, easing installation in limited engine‑room space.

Weaknesses

Designed only for 60 Hz systems; not suitable for vessels operating on 50 Hz grids without conversion.
Weight can be substantial (several tonnes), requiring reinforced mounting structures.
Initial acquisition cost is higher than some competing Chinese or Indian brands.
Limited to a single voltage rating (400 V); may need step‑down/up transformers for other shipboard voltages.
Requires a dedicated diesel engine coupling; not a self‑contained genset.

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer ships (mid‑size)Tankers (product carriers)

Decision Guide: Choose if: you need a proven, high‑temperature tolerant 500 kVA generator for 60 Hz auxiliary power on vessels with sufficient engine‑room space and budget for premium equipment. Avoid if: the vessel operates on a 50 Hz system, has severe weight/space constraints, or seeks the lowest upfront cost.

Use Cases: Typically installed as the main hotel‑load generator on cruise liners and ferries, or as an emergency backup unit on offshore supply vessels where reliable power for navigation, communications, and cargo handling is critical. It can also serve as a secondary genset on larger container ships to support peak loads.

Datasheet

GTW 500kVA 440V 50Hz Marine unverified

· four‑pole marine alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Class H insulation allows operation at higher temperatures, improving reliability in hot climates
IP44 enclosure provides solid protection against splashing water and dust typical on deck installations
Modular construction simplifies routine maintenance and reduces downtime
Meets IMO Tier II emission standards when paired with a compliant diesel engine
Certified to IMO D‑2 (IEC 60945) for marine electrical equipment

Weaknesses

IP44 rating is not fully sealed; additional ventilation or protection may be required in very harsh environments
Designed for 50 Hz only, limiting use on vessels that require dual‑frequency capability
Higher initial capital cost compared with generic industrial generators of similar power
Requires a dedicated diesel engine and cooling system – not a turnkey genset package
Physical size and weight may be restrictive for small craft or retrofits

Typical Vessels: Container shipBulk carrierTankerCruise ferryOffshore supply vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a robust, marine‑rated 500 kVA auxiliary generator with high temperature capability and proven IMO D‑2 compliance for vessels operating on 50 Hz systems. Avoid if your vessel requires dual‑frequency output, tighter space constraints, or a fully integrated turnkey genset at lower cost.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel loads, navigation equipment, and emergency power on medium‑to‑large commercial vessels; also used in standby/emergency configurations where reliable, weather‑protected generation is critical.

Datasheet

GTW 500kVA 440V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power density – delivers 500 kVA in a relatively compact footprint.
Class H insulation allows operation at elevated temperatures, improving reliability on board.
IP44 enclosure provides protection against splashing water and dust common in ship spaces.
Four‑pole design ensures stable 60 Hz output with low vibration, ideal for sensitive hotel loads.
WEG’s reputation for durable electrical machines translates to long service intervals.

Weaknesses

Limited to 60 Hz operation; not suitable for vessels requiring 50 Hz power systems.
IP44 rating is only splash‑proof – may need additional sealing in very wet or corrosive compartments.
Requires an external cooling system (air‑forced or water‑cooled) which adds installation complexity.
No built‑in fuel engine; must be paired with a compatible diesel generator set, increasing overall footprint.
Higher initial capital cost compared with some lower‑spec marine alternators.

Typical Vessels: Container shipsBulk carriersCruise linersFerriesOffshore supply vesselsNaval auxiliary ships

Decision Guide: Choose if: you need a reliable 500 kVA, 60 Hz source for US‑type vessels, have space constraints and can provide external cooling. Avoid if: the vessel operates on a 50 Hz grid, requires higher ingress protection (IP65+), or seeks an integrated generator‑alternator set with lower upfront cost.

Use Cases: Commonly installed as the main auxiliary generator for hotel loads, emergency power supply, and to support propulsion auxiliaries on large commercial ships operating in North American waters. It is also used on offshore platforms where a robust, high‑temperature tolerant alternator is required.

Datasheet

GTW 500kVA 690V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency synchronous design with integrated control system reduces fuel consumption.
IP44 enclosure provides good protection against dust and splashing water typical on deck installations.
Class‑H insulation allows higher operating temperatures, extending service life in hot climates.
Four‑pole construction (1500 rpm at 50 Hz) gives stable voltage and frequency output.
Compact footprint compared with comparable water‑cooled units, easing installation in limited spaces.

Weaknesses

Air‑cooled design may be less effective than water‑cooled alternatives in very high ambient temperatures.
IP44 rating is not fully sealed against heavy spray or immersion; harsher environments may require IP55 or higher.
Standard 690 V output may necessitate additional transformers for vessels using different voltage levels.
Limited to 500 kVA – larger vessels needing >1 MW auxiliary power will need multiple units or a bigger generator.

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise linerFerry

Decision Guide: Choose if you need a reliable 500 kVA auxiliary generator with robust enclosure, high‑temperature insulation and integrated control for medium‑size cargo or passenger vessels. Avoid if the installation demands higher ingress protection (IP55+) or water‑cooled cooling for extreme tropical conditions, or if power demand exceeds 500 kVA.

Use Cases: Commonly installed as part of the main auxiliary power plant on medium‑sized merchant ships, providing electricity for hotel services, cargo handling equipment and emergency systems. Also used as a standby generator for critical navigation and safety gear, or in offshore platforms where compact, self‑contained power sources are required.

Datasheet

GTW 500kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Insulation class H provides excellent temperature tolerance and longer service life.
IP44 enclosure offers solid protection against splashing water and dust in typical engine rooms.
Four‑pole design ensures stable 60 Hz output with low vibration, suitable for large vessel hotel loads.
WEG’s global after‑sales network simplifies spare‑parts logistics and technical support.
High efficiency core and optimized cooling reduce fuel consumption compared with older designs.

Weaknesses

IP44 is not fully sealed; additional shielding may be required in very wet or corrosive compartments.
Designed for 60 Hz systems only – unsuitable for vessels that operate on 50 Hz without rewinding.
Physical size and weight are typical of a 500 kVA set, which can limit installation on smaller craft.
Initial purchase price is higher than many generic off‑brand generators of similar rating.
Requires qualified personnel for periodic maintenance of the brushless exciter system.

Typical Vessels: Container shipBulk carrierCrude oil tankerProduct tankerOffshore supply vesselCruise linerFerry

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if: you need a reliable 500 kVA auxiliary power source for a 60 Hz fleet, value high thermal endurance and WEG’s service network, and have sufficient engine‑room space. Avoid if: the vessel operates on 50 Hz, has severe weight/space constraints, or requires a fully sealed (IP66+) enclosure without additional modifications.

Use Cases: Typically installed as the main auxiliary generator supplying hotel loads, emergency power, and shore‑power conversion on large commercial vessels; also used in offshore platforms where robust, low‑maintenance power is critical.

Datasheet

GTA 500kVA 400V 50Hz Marine unverified

· diesel-driven marine generator set

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High thermal rating (Insulation Class H) allows operation in hot engine rooms.
Robust IP44 enclosure provides protection against splashing water and dust typical of marine environments.
Four‑pole design ensures stable frequency output at 50 Hz under varying loads.
Compact footprint compared with equivalent power ratings from many competitors, saving space in machinery spaces.
WEG’s reputation for long service intervals and low maintenance requirements.

Weaknesses

Limited to 400 V/50 Hz; not directly suitable for vessels requiring 60 Hz or higher voltage systems without a transformer.
Standard control panel may lack advanced digital monitoring features found on newer smart gensets.
Weight and mounting dimensions can be higher than some lightweight aluminum‑frame alternatives.
Availability of spare parts may be regionally constrained compared with more globally stocked brands.

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise linerNaval auxiliary ship

Certifications: IMO D-2

Decision Guide: Choose if you need a proven, high‑temperature rated 500 kVA generator with solid IP44 protection for harsh engine‑room conditions and prefer a manufacturer known for durability. Avoid if your vessel operates on 60 Hz, requires integrated digital control/remote monitoring as standard, or has strict weight/space constraints that favor lighter aluminium‑frame units.

Use Cases: Typically installed as the main auxiliary power source for hotel loads, cargo handling equipment, and emergency power on medium‑to‑large commercial vessels; also used on offshore platforms where reliable, high‑temperature capable generation is critical.

Datasheet

GTA 500kVA 400V 60Hz Marine unverified

· brush‑less synchronous alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Compact footprint for its 500 kVA rating, saving engine room space
Brush‑less design reduces routine maintenance and downtime
Class H insulation permits higher operating temperatures and improves reliability in hot climates
IP44 enclosure provides protection against splashing water and dust typical on vessels

Weaknesses

Requires a dedicated cooling system (usually water‑cooled) adding piping complexity
Limited to 400 V output; vessels standardized on 440 V may need step‑up transformers
Spare‑parts distribution is less extensive than major OEMs such as Caterpillar or Cummins
Control and monitoring interfaces may need customization for integration with existing ship automation

Typical Vessels: Offshore Supply Vessel (OSV)Platform Supply Vessel (PSV)TugboatFerryMedium‑size container or bulk carrier

Decision Guide: Choose if: you need a reliable, compact 500 kVA brush‑less generator with moderate environmental protection and can accommodate its water‑cooling system. Avoid if: your vessel requires 440 V output, demands the widest global service network, or has strict weight/space constraints that favor alternative OEMs.

Use Cases: Commonly installed as a main auxiliary power source on offshore support vessels, providing hotel loads and emergency power; also used as a standby generator on ferries and medium‑size cargo ships where space efficiency and low maintenance are priorities.

Datasheet

GTA 500kVA 440V 50Hz Marine unverified

· diesel-driven synchronous generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (500 kVA) suitable for medium‑size vessels
Marine‑grade IP44 enclosure provides protection against splashing water and dust
Insulation class H allows operation at elevated temperatures typical on ships
Four‑pole design ensures stable 50 Hz frequency under varying loads
WEG’s reputation for durability and low maintenance in harsh marine environments

Weaknesses

Fixed voltage/frequency (440 V, 50 Hz) limits flexibility for vessels using other standards
Physical size and weight are substantial; installation requires adequate space and structural support
Requires diesel fuel supply and associated exhaust handling systems
Initial capital cost can be higher than some competing units of similar rating
No built‑in redundancy; a second unit is needed for critical power continuity

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise ship (mid‑size)Ferry

Decision Guide: Choose if: you need a reliable 500 kVA auxiliary generator for a 440 V/50 Hz marine power system, value robust enclosure and high temperature tolerance, and have space for a standard‑size diesel set. Avoid if: the vessel operates on 60 Hz or requires a compact, lightweight unit, or if budget constraints preclude higher upfront cost.

Use Cases: The GTA 500 kVA is typically installed as an auxiliary power source to run shipboard hotel loads, cargo handling equipment, and emergency systems on medium‑size commercial vessels. It is also used in offshore support ships where a stable 50 Hz supply is required for dynamic positioning and deck machinery.

Datasheet

GTA 500kVA 440V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency (up to ~96%) reduces fuel consumption of the prime mover
Robust cast‑iron frame and Class H insulation allow operation at elevated temperatures
Compact footprint relative to its 500 kVA rating, easing installation in limited generator rooms
Integrated monitoring/control interface compatible with common marine automation systems
Designed for 60 Hz markets, matching US and many Asian vessel power standards

Weaknesses

Requires an external diesel engine; the alternator itself is not a complete genset
IP44 enclosure provides limited protection against water ingress on exposed decks
Weight is substantial (typical for 500 kVA units), impacting handling and installation logistics
Not rated for 50 Hz operation, limiting use in regions where 50 Hz is standard
Noise and vibration levels depend entirely on the coupled prime mover

Typical Vessels: Offshore supply vessel (OSV)Platform supply vessel (PSV)Coastal cargo or feeder container shipFerry / Ro‑Ro passenger vesselSmall cruise ship or expedition yacht

Decision Guide: Choose if: you need a reliable 500 kVA marine alternator for 60 Hz applications, have space constraints and want high efficiency with built‑in monitoring. Avoid if: you require a fully integrated generator set, higher ingress protection (IP65+), USCG type approval, or operation on 50 Hz systems.

Use Cases: Commonly installed in the main engine room or dedicated auxiliary power rooms of medium‑size offshore and coastal vessels, providing both propulsion support and hotel load power. Often paired with a medium‑speed diesel engine to supply continuous shipboard electricity and handle short‑term overloads during peak demand.

Datasheet

GTA 500kVA 690V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High insulation class (H) allows reliable operation in hot engine rooms.
Robust IP44 enclosure provides protection against splashing water and dust typical on vessels.
Four‑pole design delivers stable 50 Hz output suitable for most European‑type ship systems.
Widely supported global service network from WEG, simplifying maintenance and spare parts logistics.
Modular construction enables relatively easy installation and integration with existing shaft‑driven or diesel engine drives.

Weaknesses

IP44 rating does not protect against full immersion; requires careful placement away from direct water ingress.
Designed for 50 Hz only, limiting use on vessels that standardise on 60 Hz systems.
Physical size and weight are larger than some compact diesel generators of similar power, impacting tight engine‑room layouts.
Higher initial capital cost compared with lower‑rated or generic off‑the‑shelf units.
Requires a dedicated cooling system to maintain the class H temperature rating.

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselNaval auxiliary

Decision Guide: Choose if: you need a reliable 500 kVA, 690 V, 50 Hz source for medium‑to‑large vessels operating in warm climates and you value WEG's service network. Avoid if: the vessel requires 60 Hz power, has severe space constraints, or demands a higher IP rating for direct exposure to seawater.

Use Cases: Typically installed as the main auxiliary generator on container ships, bulk carriers and cruise vessels to supply hotel loads, cargo‑handling equipment and emergency power. Also used on offshore support vessels where a robust, high‑temperature rated generator is required for continuous operation in harsh marine environments.

Datasheet

GTA 500kVA 690V 60Hz Marine unverified

· diesel generator set

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power density – 500 kVA in a relatively small footprint compared with comparable units.
IP44 enclosure provides protection against splashing water and dust typical of marine environments.
Insulation class H allows operation at elevated temperatures, enhancing durability and service life.
Integrated digital control panel with remote monitoring capabilities simplifies operation and maintenance.
Backed by WEG’s worldwide service network, ensuring parts availability and technical support.

Weaknesses

Requires diesel fuel handling and storage infrastructure on board.
Fixed 690 V output may need additional transformers for vessels that standardise on other voltages.
IP44 rating is not fully sealed; extra protection may be required in heavy spray or corrosive zones.
Only 60 Hz frequency – unsuitable for ships that operate on a 50 Hz power system without conversion equipment.
Higher upfront capital cost relative to lower‑rated generators.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore support vesselCruise liner

Decision Guide: Choose if you need a reliable 500 kVA auxiliary or emergency power source on a 60 Hz, 690 V system and value compact size, robust construction, and global after‑sales support. Avoid if your vessel operates on 50 Hz, requires fully sealed (IP66+) equipment for harsh spray zones, or has strict emissions limits beyond standard diesel generator compliance.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on large commercial ships. Also used in offshore platforms where space is limited but high output is required.

Datasheet

GTA 630kVA 400V 50Hz Marine unverified

· diesel-driven synchronous generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (630 kVA) suitable for large ship hotel loads
Class H insulation allows operation at elevated temperatures
Four‑pole construction ensures stable frequency and low vibration
Proven WEG reliability with modular design for easy installation and maintenance
IP44 enclosure offers protection against splashing water in typical marine environments

Weaknesses

IP44 rating may require additional shielding in harsh spray or salt‑air conditions
Physical size and weight are substantial, limiting use on vessels with tight engine‑room space
Standard diesel drive can have higher fuel consumption compared with newer hybrid/dual‑fuel units
Noise and emissions may need extra mitigation to meet strict IMO Tier III limits
Requires regular preventive maintenance typical of large synchronous generators

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if: you need a high‑capacity, proven auxiliary generator for large vessels with ample engine‑room space and can accommodate standard diesel emissions controls. Avoid if: the installation area is very confined, you require Tier III low‑NOx compliance without additional after‑treatment, or you prefer lighter hybrid/dual‑fuel solutions.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on large commercial ships; also used in offshore platforms where robust, high‑temperature operation is required.

Datasheet

GTA 630kVA 400V 60Hz Marine unverified

· Marine alternator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power density – 630 kVA in a relatively compact footprint compared with comparable units.
Robust construction with IP44 protection suitable for splash‑zone marine environments.
Class‑H insulation allows reliable operation at elevated ambient temperatures typical on vessels.
Four‑pole design provides good voltage regulation and low harmonic distortion.
Designed for integration with WEG’s digital control panels, enabling remote monitoring and diagnostics.

Weaknesses

IP44 rating does not protect against full immersion; additional sealing may be required in heavy spray zones.
Only rated for 60 Hz operation – unsuitable for vessels that standardise on 50 Hz systems.
Weight and mounting requirements are substantial; retro‑fit into existing engine rooms can be challenging.
Limited to 400 V output, so additional transformers may be needed for higher voltage distribution schemes.

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierLarge bulk carrier

Decision Guide: Choose if you need a reliable 630 kVA source at 400 V/60 Hz with compact dimensions and built‑in monitoring, especially for vessels operating on US or Asian standards. Avoid if the vessel requires 50 Hz power, higher voltage output without step‑up gear, or an enclosure rating above IP44.

Use Cases: The GTA 630 is typically installed as a main auxiliary generator to supply hotel loads on cruise ships, support propulsion auxiliaries on large container vessels, and provide critical power for offshore platform support vessels where space and temperature resilience are priorities.

Datasheet

GTA 630kVA 440V 50Hz Marine unverified

· marine diesel‑generator set

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (630 kVA) suitable for large hotel and propulsion loads
Class H insulation allows operation at elevated temperatures, improving reliability
IP44 enclosure provides protection against splashing water and dust in harsh marine environments
Modular design simplifies installation and maintenance on board
Widely accepted by major classification societies for new‑build projects

Weaknesses

Large physical footprint and high weight may limit placement on smaller vessels
Requires a dedicated diesel engine coupling, adding to overall system complexity
Standard emission rating (Euro III/IV) may not meet the strictest Tier III or IMO Tier IIIB requirements without additional after‑treatment
Initial capital cost is higher than lower‑power alternatives
Spare parts and service support are regionally dependent, potentially increasing lead times

Typical Vessels: Cruise shipOffshore supply vesselContainer shipFerryLNG carrier

Decision Guide: Choose if: you need a robust, high‑capacity auxiliary generator for large vessels and value proven WEG reliability; space and weight are available; existing diesel engine infrastructure is in place. Avoid if: vessel size limits installation space, you require the latest Tier III emission standards without retrofits, or budget constraints favor smaller, lower‑cost units.

Use Cases: The GTA 630 kVA set is typically installed as a main auxiliary generator on cruise liners and offshore support vessels to supply hotel loads, cargo handling equipment, and emergency power. It also serves as a standby unit for propulsion auxiliaries on container ships where redundancy is critical.

Datasheet

GTA 630kVA 440V 60Hz Marine unverified

· diesel‑driven synchronous alternator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (630 kVA) in a single unit reduces the number of generators needed
Robust IP44 enclosure and Class H insulation provide good resistance to harsh marine environments
Four‑pole design ensures stable frequency and low vibration at 60 Hz operation
WEG’s global service network simplifies spare‑parts logistics and on‑site support
Modular construction allows relatively quick removal and replacement for maintenance

Weaknesses

IP44 rating offers only moderate protection; additional sealing may be required in very wet areas
Designed for 60 Hz only – not suitable for vessels that operate on a 50 Hz grid without converters
Physical size and weight are larger than low‑speed, high‑efficiency alternatives
Fuel consumption is higher compared with newer low‑speed or hybrid generator sets
Requires dedicated cooling system; integration can be complex on cramped engine rooms

Typical Vessels: Cruise shipOffshore supply vesselContainer shipLNG carrierNaval auxiliary vessel

Decision Guide: Choose if: you need a reliable 630 kVA source at 60 Hz, have existing WEG support infrastructure, and value proven robustness for hotel‑load or emergency power. Avoid if: the vessel operates on a 50 Hz system, weight/space is at a premium, or you require the lowest possible fuel consumption/emissions.

Use Cases: Typically installed as a main auxiliary generator to supply shipboard hotel loads, as an emergency generator for critical systems, or as part of a redundant power plant on large passenger and offshore vessels where high continuous output is required.

Datasheet

GTA 630kVA 690V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous power output (630 kVA) suitable for hotel loads on cruise ships or offshore platforms
Class H insulation allows operation in elevated temperature environments
Robust IP44 enclosure provides protection against splashing water and dust in engine rooms
Four‑pole design matches standard 1500 rpm diesel prime movers, simplifying coupling
Proven WEG reputation for reliability and low maintenance intervals

Weaknesses

Relatively heavy and bulky compared with newer compact generator sets
IP44 rating does not protect against direct water jets; additional ventilation or shielding may be required in harsh climates
Fixed 690 V output may need step‑up transformers for vessels standardising on higher voltages (e.g., 11 kV)
Limited to 50 Hz operation, unsuitable for vessels requiring 60 Hz without frequency conversion

Typical Vessels: Cruise shipOffshore supply vesselLNG carrierContainer shipLarge tanker

Certifications: DNV

Decision Guide: Choose if you need a proven, high‑power (630 kVA) auxiliary generator with robust class‑H insulation for vessels operating in warm climates and standard 690 V/50 Hz systems. Avoid if vessel design calls for lighter, more compact gensets, higher voltage outputs without transformers, or 60 Hz frequency requirements.

Use Cases: Typically installed as a main hotel‑load generator on cruise ships, as an emergency power source on offshore supply vessels, and as auxiliary generation on LNG carriers where reliable, high‑capacity electricity is required for cargo handling and accommodation services.

Datasheet

GTA 630kVA 690V 60Hz Marine unverified

· brushless high‑speed alternator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power density – 630 kVA in a relatively compact footprint
Class H insulation allows operation at elevated temperatures
IP44 enclosure provides good protection against splashing water and dust
Four‑pole design delivers stable 60 Hz output suitable for most shipboard systems
Designed for low maintenance with brushless construction

Weaknesses

Voltage limited to 690 V; additional transformers may be needed for higher‑voltage distribution
IP44 rating is not fully sealed – unsuitable for areas with heavy spray or immersion
Initial capital cost can be high compared with lower‑rated generators
Requires a dedicated diesel engine coupling, adding installation complexity

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a compact, high‑output generator for a 690 V 60 Hz shipboard power system and value temperature tolerance and low maintenance. Avoid if your vessel requires higher distribution voltages, stricter enclosure protection (e.g., IP66), or has severe space constraints that demand an even smaller unit.

Use Cases: Commonly installed as the main auxiliary generator on large merchant vessels to supply propulsion‑independent power, as well as for emergency power generation and hotel load support on cruise ships and offshore platforms.

Datasheet

GTA 800kVA 400V 50Hz Marine unverified

· air-cooled marine alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power density – 800 kVA in a relatively compact footprint
Class H insulation provides good thermal endurance for continuous operation
IP44 enclosure is suitable for typical shipboard environments while allowing easy access for maintenance
Four‑pole design gives stable frequency and low vibration
Widely approved by classification societies, facilitating installation on new builds

Weaknesses

IP44 rating may be insufficient for extremely wet or corrosive spaces without additional protection
Fixed 400 V output requires step‑up transformers for vessels that standardise on higher voltages
Air‑cooled design can be sensitive to restricted airflow in cramped engine rooms
Weight is comparable to other high‑power alternators – not a lightweight solution

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselFerryNaval auxiliary

Certifications: DNV GL Type ApprovalABS Classification

Decision Guide: Choose if you need a reliable 800 kVA source at 400 V with a compact, air‑cooled design and have adequate ventilation and protection against splashing water. Avoid if the installation requires higher voltage output, an IP rating above IP44, or ultra‑lightweight equipment for space‑critical applications.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling gear, and emergency generators on medium‑to‑large commercial vessels. It is also used in retrofit projects where a proven, high‑capacity alternator is required without major redesign of existing engine rooms.

Datasheet

GTA 800kVA 400V 60Hz Marine unverified

· marine synchronous alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous output of 800 kVA suitable for large hotel‑load or emergency power sets
Robust IP44 enclosure protects against splashing water and dust in harsh marine environments
Class H insulation allows operation at elevated temperatures, extending service life
Four‑pole design provides stable 60 Hz frequency with low vibration
Widely supported by WEG’s global service network for spare parts and field support

Weaknesses

Fixed 400 V/60 Hz rating limits use on vessels that operate on 50 Hz systems
Requires an external prime‑mover (diesel engine or gas turbine); not a complete genset
Relatively heavy for its power class, impacting installation space and weight budgeting
Cooling relies on forced air; may need additional ventilation in confined engine rooms
Limited to IP44 protection – higher ingress ratings (e.g., IP66) are unavailable

Typical Vessels: Cruise shipsOffshore supply vesselsContainer shipsTankersLNG carriersNaval auxiliary vessels

Decision Guide: Choose if: you need a reliable 800 kVA, 400 V/60 Hz marine alternator with proven durability and global support for large hotel‑load or emergency power on vessels that run on 60 Hz. Avoid if: the vessel operates on a 50 Hz electrical system, weight and space are at a premium, or higher ingress protection (IP66+) is required.

Use Cases: Typically installed as the core generator in shipboard auxiliary gensets for hotel power, emergency standby power, or as part of a dual‑generator configuration on cruise ships and offshore vessels where high continuous output and robust environmental resistance are critical.

Datasheet

GTA 800kVA 440V 50Hz Marine unverified

· diesel-driven marine generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (800 kVA) suitable for large auxiliary loads
Class H insulation allows operation at elevated temperatures
Four‑pole design provides stable 1500 rpm speed at 50 Hz, simplifying coupling to standard gearboxes
IP44 enclosure offers protection against splashing water and dust typical on deck installations
WEG’s reputation for reliability and extensive service network worldwide

Weaknesses

Physical size and weight may be limiting on vessels with tight engine‑room space (exact dimensions not provided)
IP44 rating is lower than IP55/56, so additional shielding may be required in very wet or spray‑heavy areas
Standard voltage of 440 V may need step‑down transformers for systems that operate at lower voltages
Initial capital cost can be higher than comparable generators from low‑cost manufacturers
Diesel fuel consumption is relatively high compared with newer hybrid or LNG‑fuelled alternatives

Typical Vessels: Container shipCruise linerVLCC/TankerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a proven, high‑capacity auxiliary generator for large vessels, require Class H insulation for hot climates, and value WEG’s global support. Avoid if: engine‑room space is severely constrained, you demand higher ingress protection (IP55+), or you are targeting low‑emission hybrid or LNG‑fuel solutions where diesel generators are not optimal.

Use Cases: The GTA 800 kVA is typically installed as the main auxiliary generator on large merchant ships to supply hotel loads, cargo handling equipment, and emergency power. It is also used in cruise ships for extensive HVAC and galley demands, and on offshore support vessels where reliable high‑power output is critical for dynamic positioning systems.

Datasheet

GTA 800kVA 440V 60Hz Marine unverified

· marine alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (800 kVA) suitable for large ship electrical loads
Class H insulation allows operation at elevated temperatures, enhancing durability
IP44 sealed enclosure protects against splashing water and dust in marine conditions
Four‑pole design provides stable 60 Hz frequency with low harmonic distortion
Compact footprint compared to comparable 800 kVA generators, easing installation in limited engine rooms

Weaknesses

Requires a dedicated diesel engine; not an all‑in‑one genset, increasing system complexity
IP44 rating is adequate for splash protection but may need additional shielding in heavy spray zones
Limited to 60 Hz operation, making it unsuitable for vessels that require 50 Hz power without frequency conversion
Higher initial capital cost relative to lower‑rated marine generators

Typical Vessels: Cruise shipsOffshore supply vesselsLarge container shipsTankersFerries

Decision Guide: Choose if: you need a proven, high‑output alternator for 60 Hz systems on large commercial or offshore vessels and value temperature‑resistant insulation and splash‑proof enclosure. Avoid if: the vessel operates on 50 Hz, requires an integrated genset package, or has severe exposure to direct sea spray that exceeds IP44 protection.

Use Cases: The GTA 800kVA is typically installed as part of a diesel‑generator set supplying main propulsion auxiliaries, hotel loads, and emergency power on cruise liners, offshore platform support vessels, and large cargo carriers where continuous, high‑capacity electricity is critical.

Datasheet

GTA 800kVA 690V 50Hz Marine unverified

· diesel-driven alternator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous output of 800 kVA suitable for large hotel loads
IP44 enclosure provides solid resistance to splash water and dust in marine environments
Class H insulation allows operation at elevated temperatures, enhancing reliability
Four‑pole design ensures stable 50 Hz frequency under varying load conditions
WEG’s proven engineering reputation offers long service intervals and easy maintenance

Weaknesses

Fixed 690 V/50 Hz output may not match vessels that require 60 Hz or different voltage levels
IP44 rating is moderate; more demanding environments might prefer higher ingress protection
Physical size and weight are substantial, requiring dedicated engine‑room space
Initial capital cost can be higher than some competing brands with similar ratings

Typical Vessels: Bulk CarrierContainer ShipOffshore Supply VesselCruise ShipNaval Auxiliary

Decision Guide: Choose if: you need a reliable 800 kVA auxiliary power source for a vessel operating on 50 Hz systems and can accommodate the unit’s size. Avoid if: your ship requires 60 Hz, higher ingress protection (IP65+), or has strict weight/space constraints.

Use Cases: Commonly installed as the main hotel‑load generator on large commercial vessels, providing continuous power for lighting, HVAC, cargo handling equipment, and serving as an emergency backup source during engine failure.

Datasheet

GTA 800kVA 690V 60Hz Marine unverified

· high‑speed brushless alternator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power density – 800 kVA in a relatively small footprint compared with low‑speed machines
Insulation class H allows operation at elevated temperatures, improving reliability in hot engine rooms
IP44 enclosure provides protection against splashing water and dust typical of marine environments
Integrated WEG control & monitoring system enables remote diagnostics and condition‑based maintenance

Weaknesses

High rotational speed (≈1500 rpm) can increase vibration and bearing wear versus low‑speed units
IP44 rating is not fully sealed; additional protection may be required in harsh spray zones
Standard output voltage limited to 690 V, requiring step‑up transformers for vessels that prefer higher bus voltages
Requires a dedicated cooling system (air or water) to maintain temperature limits

Typical Vessels: Container shipCrude oil tankerProduct tankerCruise linerOffshore supply vesselLNG carrier (hotel load)

Decision Guide: Choose if: you need a compact, high‑output auxiliary generator for vessels with limited engine‑room space and can accommodate a 690 V bus system. Avoid if: the installation demands higher voltage output, ultra‑low vibration, or fully sealed (IP66+) protection without additional engineering.

Use Cases: Commonly installed as main auxiliary generators supplying hotel loads, cargo handling equipment, and emergency power on large commercial vessels; also used in offshore platforms where space and weight are at a premium.

Datasheet

GTA 1000kVA 400V 50Hz Marine unverified

· brush‑less synchronous generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Brush‑less design eliminates regular brush maintenance and extends service intervals
Class H insulation permits higher operating temperatures, improving reliability in hot climates
IP44 enclosure provides protection against splashing water and dust typical of marine environments
Four‑pole construction gives good low‑speed torque characteristics for shipboard drives
WEG’s global support network and proven track record in marine power applications

Weaknesses

Physical size and weight are substantial; installation may require significant deck space
Only rated for 50 Hz operation – not suitable where dual‑frequency (60 Hz) capability is required
Requires a dedicated cooling water system and proper ventilation to meet thermal limits
Initial purchase price can be higher than some competing brands with similar ratings
Spare parts and service expertise are WEG‑specific, which may limit options in remote ports

Typical Vessels: TankersContainer shipsBulk carriersCruise shipsOffshore supply vesselsLNG carriers

Decision Guide: Choose if: you need a high‑power (≈1 MW) brushless generator with robust temperature tolerance and marine‑grade enclosure for a 400 V, 50 Hz auxiliary power system on large commercial vessels. Avoid if: the vessel requires dual‑frequency capability, has severe space/weight constraints, or seeks the lowest upfront cost without WEG‑specific support.

Use Cases: Typically installed as main auxiliary generators on large merchant ships to supply propulsion auxiliaries, hotel loads, and emergency power; also used in cruise ship electrical plants where reliable, low‑maintenance generation is critical.

Datasheet

GTA 1000kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power rating (1000 kVA) suitable for medium to large vessels
Class H insulation allows operation in harsh temperature environments
IP44 enclosure provides protection against splashing water and dust typical on deck installations
WEG’s reputation for reliability and long service intervals
Standard 4‑pole design gives stable voltage and frequency output

Weaknesses

Requires an external prime mover (diesel engine) – not a complete generator set
Physical size and weight are substantial, requiring dedicated machinery space
IP44 rating is moderate; more demanding environments may need higher protection levels
Designed for 60 Hz only, limiting use on vessels that operate on 50 Hz systems
Initial acquisition cost can be higher than some competing brands

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise liner

Decision Guide: Choose if: you need a robust 1000 kVA marine alternator with proven WEG reliability, Class H insulation for high‑temperature zones, and an IP44 enclosure that fits standard deck or engine‑room installations. Avoid if: the vessel operates on 50 Hz, requires a fully integrated generator set, needs higher ingress protection (e.g., IP66), or has strict weight/space constraints where a lighter unit is essential.

Use Cases: Typically installed as the main propulsion auxiliary generator on medium‑size cargo and passenger ships, providing shipboard electricity for hotel loads, navigation systems, and emergency power. Often paired with high‑speed diesel engines in offshore supply vessels to meet peak demand periods.

Datasheet

GTA 1000kVA 440V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High efficiency (≈95% at rated load) reducing fuel consumption
Class H insulation allows higher temperature operation and longer life
Compact, modular design simplifies installation on limited deck space
Integrated digital control panel provides real‑time monitoring and fault diagnostics
Brushless construction minimizes maintenance intervals

Weaknesses

IP44 enclosure may be insufficient for very harsh marine exposure; higher IP rating often required for exposed locations
Supplied as an alternator only – requires a compatible diesel engine and coupling arrangement
Single‑frequency (50 Hz) design limits use on vessels that need dual 50/60 Hz capability
Weight can be substantial, affecting deck load calculations
Specific classification society approvals (e.g., ABS, DNV) are not publicly listed for this exact model

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselFerryCruise ship

Decision Guide: Choose if: you need a reliable 1 MVA, 440 V source for auxiliary or emergency power on vessels that already have a compatible diesel engine and you value WEG’s global service network. Avoid if: the installation requires higher ingress protection (IP66+), dual‑frequency capability, an integrated genset with built‑in engine, or you must meet a specific classification society approval that is not confirmed for this model.

Use Cases: Typically installed as part of the auxiliary power plant on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency systems; also used on offshore platforms where robust, high‑output generators are required for continuous operation.

Datasheet

GTA 1000kVA 440V 60Hz Marine unverified

· diesel‑driven synchronous generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (1 000 kVA) in a compact four‑pole package
Class H insulation allows operation at elevated temperatures, improving reliability
IP44 enclosure protects against splashing water and dust typical of engine rooms
Integrated digital control panel with remote monitoring capability
Approved by major classification societies (ABS, DNV GL) for new‑build installations

Weaknesses

Physical size and weight are significant; may limit installation in vessels with tight spaces
Designed for 60 Hz operation only – a separate 50 Hz version is required for many non‑US markets
Standard brushed rotor requires periodic brush inspection/replacement
Noise level higher than some modern low‑speed or hybrid generators
Spare‑parts logistics can be slower in remote regions without an established WEG service network

Typical Vessels: Container shipsCruise linersOffshore supply vesselsLNG carriers (auxiliary power)Naval auxiliary and support ships

Certifications: ABSDNV GL

Decision Guide: Choose if you need a proven, high‑output 1 000 kVA generator for a 60 Hz US‑type vessel, require ABS/DNV approval, and have sufficient engine‑room space. Avoid if the installation is constrained by size or weight, the vessel operates on 50 Hz grids, or you are pursuing low‑emission hybrid or LNG‑powered auxiliary systems.

Use Cases: Typically installed in the main machinery space as a primary auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power; also used as a standby set for critical navigation and safety systems on large commercial and offshore vessels.

Datasheet

GTA 1000kVA 690V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (1 MVA) suitable for main or emergency shipboard power.
Robust IP44 housing protects against splashing water and dust in typical marine environments.
Insulation class H allows reliable operation at elevated temperatures common on vessels.
Four‑pole design provides stable 50 Hz frequency with reduced vibration.
WEG’s reputation for durability and a modular construction that eases routine maintenance.

Weaknesses

IP44 rating may be insufficient for harsh offshore or ice‑class applications requiring higher ingress protection.
Designed for 50 Hz only; not directly compatible with vessels standardized on 60 Hz systems.
Physical size and weight are considerable, limiting installation in space‑constrained hull sections.
Requires an external cooling system (air‑forced or water‑cooled) that adds complexity.
Spare‑parts logistics can be slower for smaller ports where WEG dealer networks are limited.

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a reliable 1 MVA, 690 V, 50 Hz power source with high temperature tolerance for large commercial vessels and have space for a standard‑size generator set. Avoid if: the vessel operates on 60 Hz, requires a higher ingress protection rating (e.g., IP65), or has severe weight/space constraints.

Use Cases: Typically installed as the main auxiliary generator on large cargo ships, as an emergency power source on cruise vessels, or to supply hotel loads and deck machinery on offshore support platforms where continuous high‑capacity electricity is essential.

Datasheet

GTA 1000kVA 690V 60Hz Marine unverified

· high‑speed diesel generator set

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (1 MW) in a relatively compact footprint
IP44 enclosure suitable for deck‑mounted installations with splash protection
Class H insulation allows operation at elevated temperatures
Four‑pole design delivers stable 60 Hz frequency under varying loads
WEG reputation for durability and low routine maintenance

Weaknesses

High‑speed diesel engine can be less fuel‑efficient than medium/low‑speed alternatives
IP44 provides only splash protection; not suitable for harsh, fully sealed environments
Fixed 690 V output may require additional transformers for vessels using different voltage systems
Weight and mounting requirements can be significant on smaller ships
May need dedicated cooling system integration

Typical Vessels: Cruise shipOffshore supply vesselContainer shipRo‑Ro ferryNaval auxiliary

Decision Guide: Choose if you need a compact, high‑output generator with proven reliability for vessels that can accommodate an IP44 enclosure and have space for the required mounting and cooling. Avoid if your vessel requires higher ingress protection (e.g., IP65), ultra‑low fuel consumption, or operates on a voltage system not compatible with 690 V without additional conversion equipment.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on large commercial vessels; also used in offshore platforms where space and weight efficiency are critical.

Datasheet

GTA 1250kVA 400V 50Hz Marine unverified

· high‑efficiency marine alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High apparent power (1250 kVA) suitable for large vessel auxiliary generators
IP44 sealed enclosure provides protection against splashing water and dust in harsh marine environments
Class H insulation allows operation at elevated temperatures, improving reliability under load
Four‑pole design delivers 1500 rpm at 50 Hz, matching common marine diesel engine speeds
Modular construction simplifies installation and routine maintenance

Weaknesses

Large physical size and weight require substantial space in the engine room
Designed for 400 V/50 Hz only; not directly compatible with vessels that standardise on 60 Hz systems
Requires a dedicated diesel engine or prime mover – no built‑in engine option
IP44 rating does not protect against full immersion, limiting placement in certain wet zones

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IEC 60034‑1 (Rotating electrical machines – General requirements)IEC 60945 (Electrical equipment of ships – Installation, inspection and maintenance)

Decision Guide: Choose if: you need a high‑capacity auxiliary generator for a vessel that operates on a 400 V, 50 Hz system and can accommodate the physical footprint; you value robust environmental protection (IP44) and high temperature tolerance (Class H). Avoid if: your ship uses a 60 Hz power distribution, has limited engine‑room space, or requires an integrated generator set with its own diesel engine.

Use Cases: The GTA 1250kVA is typically installed as part of the auxiliary power plant on large commercial vessels, providing electricity for hotel loads, cargo handling equipment, and emergency systems. It is also used on offshore support ships where reliable, high‑output generation is critical during extended operations away from shore.

Datasheet

GTA 1250kVA 400V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous output of 1250 kVA suitable for large vessel hotel loads
IP44 enclosure provides reliable protection against splashing and dust in the engine room environment
Class H insulation allows operation at elevated temperatures, extending service life
Four‑pole design ensures stable 60 Hz frequency with low vibration
WEG’s global support network and proven marine reliability

Weaknesses

IP44 rating is not fully sealed; may require additional protection in harsh spray zones
Large physical size and weight can limit installation space on smaller vessels
Requires a dedicated 400 V three‑phase supply, limiting use on ships with different voltage standards
Higher initial capital cost compared with lower‑rated units
Maintenance must follow WEG’s specific procedures; spare parts may have longer lead times

Typical Vessels: Cruise shipOffshore support vesselContainer shipTankerFerry

Decision Guide: Choose if you need a reliable 1250 kVA auxiliary power source for a 400 V/60 Hz system on medium‑to‑large vessels and value WEG’s service network. Avoid if the installation requires higher ingress protection (e.g., IP55) or operates on a different voltage/frequency standard.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on large commercial ships; also used in offshore platforms where robust temperature tolerance is required.

Datasheet

GTA 1250kVA 440V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (1.25 MVA) suitable for large vessel hotel‑load and propulsion auxiliaries
IP44 enclosure provides solid resistance to moisture and dust in harsh marine environments
Class H insulation allows operation at elevated temperatures, enhancing reliability
Four‑pole design yields a stable 1500 rpm speed at 50 Hz, ensuring consistent frequency output
WEG’s modular construction simplifies installation and routine maintenance

Weaknesses

Physical size and weight require dedicated engine‑room space and mounting provisions
Requires an external cooling system (typically water‑cooled) adding complexity
Higher initial capital cost compared with lower‑rated generators
Maintenance demands skilled personnel familiar with WEG marine units
Fixed 50 Hz frequency may limit use on vessels standardized to 60 Hz

Typical Vessels: Container shipCruise linerLNG carrierOffshore supply vesselNaval auxiliary shipHeavy‑lift cargo vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable >1 MVA generator for large vessels, require high temperature tolerance and robust environmental protection, and have space for the required cooling system. Avoid if vessel size is limited, operating on 60 Hz systems, or budget constraints preclude a higher‑capacity unit.

Use Cases: Main auxiliary power generation for propulsion support, hotel load supply on cruise ships, emergency standby power on tankers, powering heavy deck equipment such as cranes on offshore vessels, and providing redundant power for critical navigation and communication systems.

Datasheet

GTA 1250kVA 440V 60Hz Marine unverified

· high‑power marine alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

1250 kVA output suitable for large vessel power demands
IP44 enclosure protects against splashing water and dust
Class H insulation allows operation at elevated temperatures
Four‑pole design provides stable 60 Hz frequency under load
WEG’s global service network ensures spare parts and support

Weaknesses

Physical size requires substantial installation space
Requires an external prime mover (diesel engine) for drive
IP44 rating is not fully sealed; additional protection may be needed in extreme conditions
Higher initial capital cost compared with some lower‑power competitors
Limited to 60 Hz operation, unsuitable for vessels standardized on 50 Hz

Typical Vessels: Cruise shipOffshore supply vesselLNG carrierLarge container shipTankerNaval auxiliary

Decision Guide: Choose if: you need a robust 1250 kVA generator for large commercial or offshore vessels, value WEG’s reputation and service network, and operate on a 60 Hz system. Avoid if: space is at a premium, the vessel requires 50 Hz power, or a fully sealed (IP66/68) enclosure is mandatory.

Use Cases: Typically installed as the main propulsion‑auxiliary generator set on large ocean‑going vessels, providing continuous shipboard electricity and serving as emergency power for critical systems such as navigation, cargo handling equipment, and hotel loads.

Datasheet

GTA 1250kVA 690V 50Hz Marine unverified

· Four‑pole high‑power marine alternator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous output of 1250 kVA suitable for large vessel hotel loads
Class H insulation allows reliable operation in hot engine rooms
IP44 enclosure provides protection against splashing water and dust ingress common on ships
Four‑pole design delivers smoother voltage and frequency stability
WEG’s global service network simplifies maintenance and spare‑parts logistics

Weaknesses

Physical size and weight can be restrictive in vessels with limited engine‑room space
IP44 rating may be insufficient for areas requiring higher dust/water protection (e.g., IP55+)
Initial capital cost is typically higher than some competing brands
Requires dedicated cooling system to maintain temperature limits of Class H insulation
Limited flexibility in voltage configuration; fixed 690 V output

Typical Vessels: Container shipsCruise linersOffshore supply vesselsLNG carriersNaval auxiliary vessels

Decision Guide: Choose if: you need a reliable 1250 kVA source at 690 V, operate in high‑temperature engine rooms, and value WEG’s service support. Avoid if: space or weight constraints are critical, a higher ingress protection rating is required, or budget constraints favor lower‑cost alternatives.

Use Cases: Commonly installed as the main auxiliary generator for hotel power on large passenger ships, as emergency power on offshore supply vessels, and to supply high‑capacity electrical loads on LNG carriers and naval support ships.

Datasheet

GTA 1250kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous power output (1.25 MVA) suitable for large auxiliary loads
Class H insulation allows operation at elevated temperatures, enhancing durability
IP44 enclosure provides protection against splashing water and dust while allowing easy access for maintenance
Modular design facilitates on‑board installation and future upgrades
Integrated remote monitoring options compatible with common ship control systems

Weaknesses

Relatively large footprint and high weight require substantial space and structural support
IP44 rating is not fully sealed; additional ventilation or protective measures may be needed in harsh weather zones
Requires a dedicated cooling system to maintain temperature limits under full load
Higher initial capital cost compared with lower‑specification generators from budget manufacturers
Limited to 690 V three‑phase output, which may necessitate step‑down transformers for certain vessel electrical architectures

Typical Vessels: Container shipsBulk carriersTankers (crude and product)Cruise linersOffshore supply vesselsLNG carriers

Certifications: ABSDNV GL

Decision Guide: Choose if: you need a reliable, high‑capacity generator for large auxiliary loads on ocean‑going vessels and value proven durability with remote monitoring. Avoid if: space, weight, or budget constraints are critical, or if the vessel requires fully sealed (IP66+) equipment for extreme exposure.

Use Cases: The GTA 1250 kVA is typically installed as part of a ship's main auxiliary power plant to supply propulsion‑related auxiliaries, hotel services, cargo handling equipment, and emergency power on vessels with substantial electrical demand, such as container ships or cruise liners operating long voyages.

Datasheet

GTA 1500kVA 400V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous output of 1500 kVA suitable for large vessel hotel loads
IP44 protected enclosure resists splashing water and dust ingress
Class H insulation allows operation at elevated temperatures, enhancing reliability
Four‑pole design provides stable 50 Hz frequency with reduced vibration
WEG’s proven track record for durability and low total‑ownership cost

Weaknesses

Large physical footprint; requires substantial installation space
Requires an external diesel engine – not a complete genset solution
IP44 rating may be insufficient for exposed deck installations without additional shielding
Fixed 400 V output limits flexibility for vessels using higher voltage distribution systems
Weight and mounting requirements can increase structural reinforcement needs

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary ship

Decision Guide: Choose if you need a rugged, high‑power 1500 kVA alternator for a vessel with ample engine room space and a requirement for reliable 400 V/50 Hz supply. Avoid if the project calls for compact, integrated gensets, higher voltage levels, or stricter splash‑zone protection beyond IP44.

Use Cases: Commonly installed as the main auxiliary generator on large commercial vessels to supply hotel loads, emergency power, and support propulsion auxiliaries; also used in offshore platforms where a stable high‑capacity electrical source is required.

Datasheet

GTA 1500kVA 400V 60Hz Marine unverified

· diesel-driven synchronous marine generator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (1500 kVA) suitable for large ship service loads
Class H insulation allows reliable operation at elevated temperatures
Marine‑grade IP44 enclosure provides protection against splashing water and dust in typical engine room environments
Four‑pole design yields 1800 rpm at 60 Hz, matching standard marine diesel engines for efficient coupling
WEG’s global service network offers strong after‑sales support and spare‑parts availability

Weaknesses

IP44 rating may be insufficient in very harsh or spray‑heavy environments without additional shielding
Fixed 400 V output limits compatibility with vessels that standardise on higher voltages (e.g., 440 V or 690 V)
No built‑in dual‑fuel capability; requires a conventional diesel engine drive

Typical Vessels: Container shipsCruise linersTankersBulk carriersOffshore supply vessels

Decision Guide: Choose if: you need up to 1.5 MVA of reliable ship‑service power at 400 V, prefer a proven marine generator with robust temperature tolerance and strong OEM support. Avoid if: the vessel requires higher voltage ratings, stricter ingress protection (e.g., IP66), or dual‑fuel operation.

Use Cases: Main propulsion auxiliary generator on large commercial vessels, emergency power source for critical hotel loads, dedicated supply for cargo handling equipment on container and bulk carriers, and backup generation on cruise ships where high reliability is essential.

Datasheet

GTA 1500kVA 440V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (1.5 MVA) suitable for main or emergency service on large vessels
Brushless design reduces maintenance intervals and improves reliability
Class H insulation allows operation at higher temperatures, extending lifespan in harsh marine environments
IP44 enclosure provides protection against splashing water and dust typical of shipboard installations
Standard 440 V/50 Hz output matches most existing vessel electrical systems, simplifying integration

Weaknesses

Large physical size and weight may limit installation on vessels with tight space constraints
IP44 rating does not protect against direct water jets; additional shielding or ventilation may be required in very wet areas
Requires a compatible prime‑mover (diesel engine) that can maintain the 4‑pole speed, limiting flexibility of engine selection
Higher initial capital cost compared with lower‑rated generators
External cooling system often needed to meet continuous duty ratings, adding complexity

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary ship

Decision Guide: Choose if: you need a robust 1.5 MVA generator for main or emergency power on large vessels, require low‑maintenance brushless technology, and have sufficient space for the unit and its cooling system. Avoid if: vessel size is limited, budget constraints favor smaller units, or you need higher ingress protection than IP44.

Use Cases: Commonly installed as a primary auxiliary generator supplying hotel loads on cruise ships, as an emergency standby generator on container vessels, or as part of the power plant on offshore supply and LNG carriers where high continuous output and reliability are critical.

Datasheet

GTA 1500kVA 440V 60Hz Marine unverified

· Four-pole synchronous generator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous power output (1500 kVA) suitable for large vessel service loads
Robust IP44 protected enclosure resists splashing water and dust
Class H insulation allows higher temperature operation, improving reliability in hot climates
Four‑pole design provides smoother torque and lower vibration at 1800 rpm (60 Hz)
WEG’s reputation for low fuel consumption and long service intervals

Weaknesses

Relatively large physical footprint compared with newer compact diesel‑generator sets
Standard 60 Hz frequency limits use on vessels operating primarily on 50 Hz grids without a converter
Requires regular oil changes and scheduled maintenance typical of high‑power diesel gensets
No integrated hybrid or energy‑storage capability; pure diesel operation only

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Bulk carrier (>50,000 dwt)Cruise linerOffshore supply vessel

Certifications: ABS Type ApprovalDNV GL ClassificationLloyd's Register Approval

Decision Guide: Choose if: you need a proven, high‑capacity diesel generator for 60 Hz shipboard power with robust environmental protection and class approvals. Avoid if: the vessel operates primarily on 50 Hz systems, space is at a premium, or a hybrid/energy‑storage solution is required.

Use Cases: The GTA 1500kVA set is typically installed as part of the main propulsion auxiliary plant on large ocean‐going vessels, providing ship service power for cargo handling equipment, hotel loads, and emergency generators. It is also used on cruise ships to supply extensive hotel services and on offshore support vessels where high reliability under continuous load is critical.

Datasheet

GTA 1500kVA 690V 50Hz Marine unverified

· four‑pole water‑cooled marine alternator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

1500 kVA output meets the demand of large vessels requiring high auxiliary power
Four‑pole design provides smooth torque and lower vibration at 50 Hz
IP44 enclosure protects against splashing water and dust, suitable for harsh deck conditions
Class H insulation allows operation at elevated temperatures common on ships
Standard 690 V three‑phase output matches most modern shipboard distribution systems

Weaknesses

Large physical size and weight demand dedicated engine room space and mounting provisions
Requires a closed-loop cooling water system, adding complexity to installation
Designed for 50 Hz only; not directly compatible with vessels that operate on 60 Hz grids
Initial capital cost is higher than lower‑rated generators
IP44 rating does not provide full dust protection (only splash‑proof)

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary ship

Decision Guide: Choose if: you need >1 MVA of reliable auxiliary power, the vessel uses a 690 V 50 Hz distribution system, and space for a water‑cooled alternator is available. Avoid if: the installation area is severely constrained, the ship operates on a 60 Hz grid, or the budget does not allow for a high‑capacity generator set.

Use Cases: Typically installed as part of the main auxiliary power plant on large commercial vessels, providing hotel loads, cargo handling equipment, and emergency power. It can also serve as a dedicated generator for propulsion support on hybrid diesel‑electric ships.

Datasheet

GTA 1500kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (1.5 MVA) suitable for large vessel hotel loads
Robust H‑class insulation provides excellent thermal endurance
IP44 sealed enclosure resists salt spray and splashing water
Four‑pole design yields lower rotational speed, reducing wear on the prime mover
WEG’s global service network offers strong after‑sales support

Weaknesses

Physical size and weight are substantial, requiring significant installation space
Fixed 690 V output may need additional transformers for vessels using other voltage levels
Fuel consumption at full load can be higher than newer high‑efficiency generators
Limited redundancy if only a single unit is installed on board
Standard cooling relies on forced air; extreme ambient temperatures may require supplemental cooling

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary

Decision Guide: Choose if: you need a proven, high‑capacity generator for vessels with ample engine room space and require robust protection against marine corrosion. Avoid if: the installation envelope is tight, you prefer lower voltage outputs without step‑down gear, or you are targeting the latest ultra‑low‑fuel‑consumption technology.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel services, cargo handling equipment, and emergency power on large commercial ships and offshore support vessels. It can also serve as a standby unit for redundancy in critical operations.

Datasheet

GTA 2000kVA 400V 50Hz Marine unverified

· high-power marine alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

Rated 2 MVA provides ample capacity for large vessels' main or auxiliary power needs
Class‑H insulation allows continuous operation up to 180 °C, reducing cooling requirements
IP44 enclosure offers protection against splashing water and dust typical in marine environments
Four‑pole design ensures stable 50 Hz output with low vibration
WEG’s reputation for long service intervals and easy access to spare parts

Weaknesses

Physical size and weight are substantial, limiting installation on vessels with tight space constraints
Designed for 50 Hz markets only; not directly compatible with 60 Hz regions without derating
Higher upfront cost compared with many Asian‑manufactured equivalents
Requires a dedicated cooling system to maintain temperature limits in hot climates
Service network, while global, may be less dense than that of larger OEMs in some remote ports

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary ship

Certifications: ABS Type ApprovalDNV GL Classification

Decision Guide: Choose if: you need a reliable 2 MVA source for large‑scale hotel or propulsion loads, operate in high‑temperature marine environments, and value WEG’s service support. Avoid if: vessel space is limited, the power requirement is well below 2 MVA, or you require a 60 Hz system without derating.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels, providing hotel power on cruise ships, supporting offshore platform electricity needs, and serving as emergency power on naval support vessels.

Datasheet

GTA 2000kVA 400V 60Hz Marine unverified

· brushless marine alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous output (2000 kVA) suitable for large vessel hotel loads
IP44 protected enclosure resists salt spray and corrosion
H‑class insulation allows higher operating temperatures, reducing cooling demand
Four‑pole design provides stable frequency and lower vibration
Designed to integrate with standard 400 V three‑phase shipboard distribution systems

Weaknesses

Large physical footprint and weight typical of high‑power generators (exact figures not disclosed)
Requires diesel fuel and associated exhaust/ cooling infrastructure
Initial capital cost is higher than lower‑rated units
Maintenance must be performed by personnel familiar with WEG marine sets

Typical Vessels: Container ships (>10,000 TEU)Cruise linersOffshore supply vesselsLNG carriersNaval auxiliary vessels

Decision Guide: Choose if: you need a reliable >1500 kVA auxiliary source for a vessel operating on a 400 V 60 Hz system and can accommodate the size and fuel requirements. Avoid if: space, weight or emissions constraints favor smaller, dual‑fuel or hybrid generators.

Use Cases: Commonly installed as the main auxiliary generator on large ocean‑going vessels to supply hotel services, cargo handling equipment, and emergency power; also used in standby/emergency configurations where high output is required quickly.

Datasheet

GTA 2000kVA 440V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous power output (2000 kVA) suitable for main or emergency plant on large vessels
Robust IP44 enclosure protects against splashing water and dust in harsh marine environments
Class H insulation allows operation at elevated temperatures typical of engine rooms
Integrated digital control panel with remote monitoring simplifies commissioning and maintenance
Proven reliability and long service life from WEG’s extensive marine‑grade design experience

Weaknesses

Large physical footprint and weight require substantial installation space and structural support
Designed for 50 Hz systems only; not directly compatible with vessels that operate on 60 Hz
Higher upfront capital cost compared with smaller or lower‑rated generators
Requires a dedicated prime mover (typically diesel) and regular brush/air‑cooling maintenance
IP44 rating does not protect against full immersion, so placement must avoid direct water ingress

Typical Vessels: Cruise shipOffshore platformContainer vesselBulk carrierRo‑Ro ferry

Certifications: ABSDNV GLLloyd's Register

Decision Guide: Choose if you need a high‑capacity (2 MW) generator with strong protection against marine exposure, class H temperature tolerance, and integrated digital control for large ships or offshore platforms. Avoid if vessel space is limited, the power system runs on 60 Hz, or budget constraints favor smaller units.

Use Cases: The GTA 2000 kVA unit is typically installed as main propulsion auxiliary power on cruise liners, as a primary generator plant on offshore drilling rigs, and as emergency/stand‑by generation for large cargo carriers where continuous high‑power supply is critical.

Datasheet

GTA 2000kVA 440V 60Hz Marine unverified

· synchronous marine alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous output of 2000 kVA suitable for large ship hotel and propulsion loads
Robust IP44 enclosure protects against splashing water and dust in marine environments
Class H insulation provides excellent thermal endurance and reliability
Four‑pole design ensures stable frequency and smooth operation at 60 Hz
WEG brand reputation for durability and low maintenance intervals

Weaknesses

Physical size and weight are substantial, requiring dedicated engine room space
IP44 rating may be insufficient for vessels operating in very harsh or fully submerged conditions
Limited to 60 Hz markets; not directly usable on 50 Hz fleets without redesign
May require regular brush inspection/maintenance if a brushed design is used (common in many alternators)
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Cruise shipLNG carrierLarge tankerContainer vessel (>10,000 TEU)Offshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a reliable 2 MVA marine generator with proven WEG engineering for large vessels operating on 60 Hz power systems and have sufficient engine‑room space. Avoid if the installation area is constrained, the vessel requires higher ingress protection (e.g., IP65) or operates on 50 Hz grids.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, emergency power, or secondary propulsion drives on large commercial and offshore vessels where high continuous power and robust construction are essential.

Datasheet

GTA 2000kVA 690V 50Hz Marine unverified

· diesel‑driven synchronous marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High continuous output of 2000 kVA suitable for large vessel hotel loads and DP systems
Robust IP44 enclosure and Class H insulation provide protection against harsh marine environments and high temperatures
Four‑pole design ensures stable frequency and low harmonic distortion
WEG’s global service network offers spare parts availability and remote monitoring options
Designed to meet IEC 60034 standards for marine generators

Weaknesses

Large physical footprint and weight may limit installation in space‑constrained engine rooms
Requires a dedicated diesel prime mover; integration cost is higher than smaller generator sets
Standard output voltage of 690 V may need step‑down transformers for vessels that operate on lower voltages
IP44 rating protects against splashing water but not full dust ingress, requiring regular inspection in dusty compartments
Higher initial capital expense compared with lower‑rated alternatives

Typical Vessels: Very Large Crude Carriers (VLCC)LNG carriersCruise shipsOffshore supply vesselsLarge container ships

Decision Guide: Choose if: you need a reliable >1.5 MVA auxiliary power source at the standard 690 V marine voltage, operate in demanding environments, and value WEG’s service support. Avoid if: space or weight constraints are critical, your vessel uses lower system voltages, or budget limits preclude a high‑capacity set.

Use Cases: Typically installed as main auxiliary generators on large tankers, cruise liners, and offshore vessels to supply hotel loads, dynamic positioning systems, and emergency power; often paired in parallel for redundancy.

Datasheet

GTA 2000kVA 690V 60Hz Marine unverified

· diesel-driven generator set

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP44

Insulation Class

Strengths

High power output (2000 kVA) suitable for large vessel hotel loads
Robust IP44 enclosure protects against splashing water and dust
Class H insulation allows operation at elevated temperatures
Four‑pole design provides stable frequency and reduced vibration
WEG’s global service network simplifies maintenance and spare parts logistics

Weaknesses

Large physical footprint may limit installation in space‑constrained engine rooms
IP44 rating may be insufficient for fully exposed deck installations without additional shielding
Designed for 60 Hz markets only; not directly compatible with 50 Hz systems
Higher initial capital cost compared with some lower‑spec competitors
Requires high‑quality fuel to meet emissions and durability targets

Typical Vessels: Cruise shipContainer vesselBulk carrierTankerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a reliable 2000 kVA, 690 V source for large ocean‑going ships operating on 60 Hz, and value WEG’s service support. Avoid if: the vessel operates on 50 Hz, has severe exposure requiring higher than IP44 protection, or budget constraints demand a lower‑cost alternative.

Use Cases: Typically installed as main auxiliary power for large commercial vessels, providing hotel load electricity and serving as an emergency generator for critical navigation and safety systems. Also used on offshore platforms where high‑capacity, temperature‑resistant generation is required.

Datasheet

Hyundai Marine Gen

HFC 100kVA 400V 50Hz unverified

· marine diesel‑generator set

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design provides stable 50 Hz output with low vibration
Insulation class H offers good thermal endurance for continuous operation
IP23 enclosure protects against splashing water, suitable for typical shipboard environments
Hyundai Marine Gen reputation for reliability and worldwide service support
Standard 400 V/50 Hz output matches most marine electrical systems

Weaknesses

Limited to 100 kVA – may be undersized for larger vessels or high‑power hotel loads
IP23 rating does not protect against dust ingress or heavy spray, requiring additional shielding in harsh areas
Fixed voltage/frequency; no built‑in variable speed or multi‑frequency capability
May require external sound attenuation to meet strict noise regulations on passenger ships
No documented advanced digital control interface (e.g., remote monitoring) for this specific model

Typical Vessels: Coastal cargo vesselsOffshore supply boatsFerriesFishing vesselsYachts and small luxury craft

Decision Guide: Choose if: you need a proven, compact 100 kVA auxiliary generator for vessels with standard 400 V/50 Hz systems and have limited installation space. Avoid if: the vessel requires higher power output, higher ingress protection (IP55+), multi‑frequency capability, or integrated advanced monitoring.

Use Cases: Commonly installed as shipboard auxiliary power to run hotel loads, emergency lighting, cargo handling equipment, and to start the main propulsion engine on small to medium vessels operating in coastal or offshore environments.

Datasheet

HFC 100kVA 400V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for limited engine‑room space
Four‑pole design provides stable voltage and frequency under varying loads
Class H insulation allows operation in high ambient temperature zones
IP23 enclosure protects against dust and limited water spray, common on deck installations
Hyundai Marine’s global service network simplifies spare‑parts logistics

Weaknesses

Maximum output of 100 kVA may be insufficient for larger vessels or high‑power cargo handling equipment
Standard IP23 rating does not protect against heavy splashing or immersion, limiting placement in wet zones
Diesel fuel consumption is higher than newer hybrid or LNG‑based gensets
Noise and vibration levels are typical of conventional diesel generators; may require additional acoustic insulation

Typical Vessels: Coastal cargo vesselsOffshore supply boatsFerriesPatrol & coast guard shipsTugboatsLarge yachts

Decision Guide: Choose if: you need a reliable 100 kVA auxiliary power source, have limited engine‑room space, and value Hyundai’s after‑sales support. Avoid if: the vessel requires higher standby capacity, must meet stricter emission tiers (e.g., IMO Tier III) without additional exhaust treatment, or needs equipment rated for heavy water exposure.

Use Cases: Commonly installed as the main auxiliary generator on small to medium commercial vessels, providing power for lighting, HVAC, navigation electronics, and cargo handling gear; also used as an emergency standby unit to meet SOLAS requirements.

Datasheet

HFC 100kVA 440V 50Hz unverified

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 100 kVA rating ideal for auxiliary loads on small to medium vessels
IP23 splash‑proof enclosure suitable for typical marine exposure
Class‑H insulation permits operation at higher ambient temperatures
Four‑pole design provides stable 50 Hz output with reduced vibration
Hyundai Marine brand offers established reliability and global service support

Weaknesses

Limited power output (100 kVA) may be insufficient for larger ship systems
IP23 protection does not guard against dust ingress or full immersion
May lack integrated emission‑control technology required in strict Emission Control Areas
Single‑unit configuration provides no built‑in redundancy
Physical size and weight can be relatively high for the power rating

Typical Vessels: Coastal cargo vesselOffshore supply boatFerryCrew transfer vesselFishing vesselYacht (large)

Decision Guide: Choose if you need a proven, compact 100 kVA auxiliary generator for small to medium vessels and value Hyundai's global support. Avoid if the ship requires higher power, stricter emission controls, or higher ingress protection (e.g., IP54+) for harsh environments.

Use Cases: Commonly installed as the main auxiliary generator on coastal cargo ships, offshore supply vessels, ferries, and larger workboats to run navigation equipment, lighting, HVAC, and other shipboard services; also used as a standby unit on small tankers where space is limited.

Datasheet

HFC 100kVA 440V 60Hz unverified

· marine diesel‑generator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Provides 100 kVA of reliable standby/auxiliary power suitable for many mid‑size ships
Four‑pole design ensures stable frequency output at 60 Hz
IP23 enclosure protects against splashing water and dust common in engine rooms
Class H insulation allows operation at higher temperatures, enhancing durability

Weaknesses

IP23 rating is not fully watertight; additional shielding may be required for harsh marine exposure
Limited to 60 Hz markets – unsuitable for vessels standardized on 50 Hz
No integrated sound‑attenuation package; external muffler or enclosure may be needed
Power output may be insufficient for larger vessels with high auxiliary demand

Typical Vessels: Coastal cargo vesselOffshore supply vessel (OSV)FerrySmall tankerResearch vessel

Decision Guide: Choose if you need a compact, 100 kVA generator for 60 Hz auxiliary power on medium‑size vessels operating in temperate climates and have space constraints. Avoid if the ship requires 50 Hz operation, higher power output, or a higher ingress protection rating (e.g., IP55) for severe weather exposure.

Use Cases: Supplies standby electricity for lighting, navigation systems, cargo pumps, HVAC and other auxiliary loads on mid‑size commercial vessels; often installed as part of an emergency power system.

Datasheet

HFC 100kVA 690V 50Hz unverified

· diesel‑driven marine generator set

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Proven Hyundai reliability with long service life in sea‑going applications
Compact footprint and integrated control panel simplify installation in limited spaces
Four‑pole design provides stable voltage and frequency output at 50 Hz
IP23 enclosure offers basic protection against splashing water while allowing easy access for maintenance

Weaknesses

Limited power rating (100 kVA) unsuitable for larger vessels or high‑energy cargo handling equipment
IP23 enclosure provides minimal sound insulation; additional acoustic treatment may be required
Standard emission level may not meet the strictest Tier III requirements without after‑treatment
Maintenance intervals are typical of medium‑speed diesel sets, requiring regular oil and filter changes

Typical Vessels: Offshore supply vesselCoastal cargo shipFerryFishing vesselYacht

Decision Guide: Choose if: you need a reliable 100 kVA auxiliary power source for vessels under ~2,000 GT where space is at a premium and basic water‑ingress protection suffices. Avoid if: the vessel requires higher auxiliary power, strict noise limits, or must comply with the latest Tier III emission standards without additional after‑treatment.

Use Cases: Commonly installed as the main auxiliary generator to supply ship service loads such as lighting, HVAC, navigation equipment, and small cargo handling gear on coastal and offshore support vessels.

Datasheet

HFC 100kVA 690V 60Hz unverified

· diesel‑driven alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design provides stable 60 Hz output for shipboard loads
IP23 enclosure suitable for deck‑mounted installation where only splash protection is required
Insulation class H allows operation at higher ambient temperatures typical on marine engines rooms
Standard 690 V three‑phase voltage matches most vessel auxiliary power systems, simplifying integration
Hyundai Marine Gen reputation for durability and long service intervals

Weaknesses

IP23 rating offers only limited water protection; not suitable for harsh spray or wash‑down areas
Single‑unit design provides no built‑in redundancy for critical emergency power
Only 60 Hz frequency available, limiting use on vessels that operate on 50 Hz systems
No publicly documented IMO D‑2 or USCG type approval listed for this exact model
Maximum output of 100 kVA may be insufficient for larger vessels with high hotel loads

Typical Vessels: General cargo shipOffshore supply vesselFerrySmall tankerCoastal container feeder

Decision Guide: Choose if you need a reliable 100 kVA auxiliary generator for vessels that run on a 690 V, 60 Hz system and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), must meet specific class approvals such as IMO D‑2, or operates on 50 Hz power.

Use Cases: Commonly installed in the engine room or deck to supply hotel services, navigation equipment, cargo pump motors and emergency lighting on medium‑size commercial vessels. It serves as the primary auxiliary generator for routine operations and can be part of a dual‑generator arrangement for redundancy when paired with another set.

Datasheet

HFC 150kVA 400V 50Hz unverified

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for limited engine room space
IP23 splash‑proof enclosure provides basic protection against water ingress in typical shipboard environments
Insulation class H allows higher operating temperatures, enhancing thermal robustness
Four‑pole design offers stable voltage and frequency output under varying loads
Hyundai Marine’s global service network simplifies maintenance and spare‑part logistics

Weaknesses

IP23 rating does not protect against dust or heavy spray; unsuitable for harsh offshore exposure without additional shielding
Single‑frequency (50 Hz) design limits use on vessels that require dual‑frequency capability (e.g., 60 Hz regions)
150 kVA output may be insufficient for larger ships with high hotel loads or multiple propulsion auxiliaries
Standard oil‑lubricated bearings require regular maintenance intervals compared to newer oil‑free designs

Typical Vessels: General cargo shipContainer vesselProduct tankerRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose if: you need a reliable 150 kVA, 400 V auxiliary generator for vessels operating primarily in 50 Hz regions and have limited engine‑room space; you value Hyundai’s after‑sales support. Avoid if: the installation requires higher ingress protection (IP44+), dual‑frequency capability, or power ratings above 200 kVA.

Use Cases: Typically installed as an auxiliary generator to supply hotel services, lighting, and cargo handling equipment on medium‑size merchant ships; also used as a standby emergency power source meeting SOLAS requirements for critical systems.

Datasheet

HFC 150kVA 400V 60Hz unverified

· marine alternator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 150 kVA rating fits well in limited engine‑room spaces of mid‑size ships.
IP23 splash‑proof enclosure protects against rain and dust while allowing easy access for maintenance.
Class H insulation provides a high thermal margin, enhancing durability under continuous load.
Four‑pole design ensures stable 60 Hz output with low harmonic distortion.
Hyundai Marine’s global service network offers spare parts and technical support worldwide.

Weaknesses

Power rating may be insufficient for vessels with large hotel loads or high‑capacity deck machinery.
IP23 is not fully watertight; additional shielding is required in heavy spray or immersion zones.
Typically water‑cooled, requiring an external cooling circuit and associated maintenance.
Relatively heavy for its size, limiting suitability on very small craft or yachts with strict weight budgets.
Fixed 400 V/60 Hz output limits use in regions where 50 Hz systems are standard without a frequency converter.

Typical Vessels: General cargoContainer feederCoastal tankerOffshore supply vesselLarge yacht

Decision Guide: Choose if you need a reliable 150 kVA auxiliary power source for vessels operating in 60 Hz regions, value Hyundai’s after‑sales support, and have space for a compact generator set. Avoid if the vessel requires higher power output, operates primarily on 50 Hz systems, or needs a fully sealed (IP≥65) enclosure for extreme wet environments.

Use Cases: Provides hotel load electricity, emergency backup power, deck‑machinery drive, navigation and communication equipment supply, and start‑up power for cargo refrigeration units on mid‑size commercial ships.

Datasheet

HFC 150kVA 440V 50Hz unverified

· four-pole synchronous alternator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact rating (150 kVA) fits medium‑size vessels without excessive space consumption
Class H insulation tolerates high operating temperatures typical of engine rooms
IP23 enclosure provides splash protection suitable for standard marine environments
Four‑pole design yields smoother voltage and lower ripple at 50 Hz
Hyundai Marine brand is widely recognised for durability and after‑sales support

Weaknesses

IP23 offers only limited ingress protection; not dust‑tight or resistant to heavy spray
No built‑in advanced digital monitoring or remote diagnostics in the basic specification
Fixed 440 V output may require additional transformers for vessels using other voltage standards
Potentially larger footprint and weight compared with newer compact, oil‑free designs
Emissions control depends on the prime mover; not a low‑NOx or dual‑fuel solution

Typical Vessels: General cargo shipContainer feederSmall to medium tankerOffshore supply vesselFerry

Decision Guide: Choose if you need a proven, mid‑range auxiliary generator with robust temperature tolerance and basic splash protection for vessels operating in standard marine conditions. Avoid if your project demands higher ingress protection (IP55+), integrated remote monitoring, dual‑fuel capability, or the lowest possible emissions footprint.

Use Cases: Provides primary auxiliary power for accommodation, navigation equipment, cargo handling gear, and emergency standby supply on medium‑size merchant vessels; commonly installed in engine rooms where space is limited but reliable, continuous power is essential.

Datasheet

HFC 150kVA 440V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for vessels with limited engine‑room space
Class H insulation permits operation in high ambient temperature environments
Four‑pole design provides stable frequency and lower vibration at 60 Hz
Hyundai Marine reputation for durability and long service intervals
Standard 440 V output matches most US‑type auxiliary power systems

Weaknesses

IP23 enclosure offers only splash protection; not suitable for dusty or harsh marine exposure without additional shielding
Fixed 60 Hz frequency limits use on vessels that operate on 50 Hz grids
150 kVA rating may be insufficient for larger ships requiring higher hotel‑load capacity
No integrated sound‑attenuation enclosure in the base model, potentially requiring extra acoustic treatment

Typical Vessels: Coastal cargo vesselsTugboatsOffshore supply boatsFerries (short‑range)Large fishing vessels

Decision Guide: Choose if you need a reliable, compact 150 kVA generator for a 60 Hz US‑type auxiliary power system on a small to medium vessel and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (IP55/65), operation at 50 Hz, or significantly larger power output.

Use Cases: Provides primary auxiliary power for navigation, communication, and hotel loads on small commercial vessels; also serves as a standby generator for emergency power where space is limited.

Datasheet

HFC 150kVA 690V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Rated output of 150 kVA at the standard marine voltage of 690 V/50 Hz
Four‑pole construction provides stable frequency and torque characteristics
IP23 enclosure protects against splashing water and dust, suitable for typical engine room environments
Insulation class H allows operation up to 180 °C, enhancing thermal robustness
Hyundai Marine’s global service network offers spare parts and field support

Weaknesses

IP23 is not fully sealed; additional shielding may be required in harsh or wet locations
No integrated acoustic enclosure – external mufflers are needed to meet strict noise regulations
Designed for 50 Hz operation only; a rewinding would be necessary for 60 Hz markets
Physical dimensions and weight are not published, potentially larger than some ultra‑compact competitors
Partial‑load efficiency may be lower than newer high‑efficiency models

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (mid‑size)Offshore supply vessel

Decision Guide: Choose if you need a proven 150 kVA auxiliary generator with Hyundai’s after‑sales support, operating on 50 Hz systems and can accommodate an IP23 enclosure. Avoid if the installation requires a fully sealed (IP65+) unit, integrated noise suppression, or operation on 60 Hz without modification.

Use Cases: Commonly installed as main auxiliary power for hotel services, cargo handling equipment, and emergency generation on medium‑size merchant vessels; also used in offshore platforms where reliable diesel generation is required.

Datasheet

HFC 150kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation allows operation in higher ambient temperatures typical on vessels.
Four‑pole design provides stable 1500 rpm operation at 60 Hz, matching most marine diesel engines.
Compact IP23 enclosure saves space in engine rooms while protecting against dust and limited splashing.
Robust construction with proven Hyundai Marine reliability and low routine maintenance requirements.
Standard 690 V three‑phase output matches common shipboard distribution systems.

Weaknesses

IP23 rating does not protect against heavy water ingress; additional sealing may be needed in wet areas.
No integrated sound attenuation – auxiliary silencing must be added for noise‑sensitive vessels.
Fixed voltage and frequency limit flexibility for vessels that require multi‑frequency or higher‑voltage generators.
Weight and dimensions are typical of 150 kVA units, which may be a constraint on very small craft.

Typical Vessels: TankersContainer shipsBulk carriersOffshore supply vesselsCruise shipsFerries

Decision Guide: Choose if you need a reliable 150 kVA auxiliary power source with high‑temperature insulation and a compact footprint for standard 690 V shipboard distribution. Avoid if the installation requires higher IP protection, built‑in acoustic treatment, or multi‑frequency capability.

Use Cases: Commonly installed as part of an auxiliary generator set to supply hotel loads, cargo handling equipment, navigation systems, and emergency power on medium‑size commercial vessels where space and temperature resilience are priorities.

Datasheet

HFC 200kVA 400V 50Hz unverified

· marine diesel generator set

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact IP23 enclosure suitable for limited engine‑room space
High insulation class (H) allows operation in hotter climates
Four‑pole design provides stable 50 Hz output with low vibration
Hyundai Marine reputation for durability and long service intervals
Standard 400 V three‑phase output matches most shipboard distribution systems

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for harsh wet‑deck installations
Fixed 200 kVA rating may be oversized for small vessels or undersized for large, high‑power ships
No built‑in emission control package (e.g., SCR) mentioned in publicly available data
Limited documentation publicly available, which can delay spare‑parts procurement

Typical Vessels: Medium‑size tankersContainer vessels up to 5 000 TEUBulk carriers (handymax/handysize)Offshore supply vesselsCruise ships (auxiliary power for hotel load)

Decision Guide: Choose if you need a reliable 200 kVA auxiliary source on a vessel with moderate space constraints and standard 400 V/50 Hz distribution, and you value Hyundai Marine's proven service network. Avoid if the installation requires higher ingress protection (IP≥44), stricter emission standards, or a generator sized significantly above or below 200 kVA.

Use Cases: Typically installed in the engine room of medium‑size commercial ships to supply hotel services, navigation equipment, and emergency power; also used on offshore support vessels where a compact, robust generator is required for continuous operation during transit and while on station.

Datasheet

HFC 200kVA 400V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact IP23 enclosure fits standard engine rooms while protecting against splashing water and dust.
Insulation class H allows operation at higher temperatures, enhancing reliability in hot climates.
Four‑pole design provides stable voltage and frequency output under varying loads.
Hyundai’s global service network offers strong after‑sales support and parts availability.
Designed to meet modern emission standards (e.g., IMO Tier II) for auxiliary power sets.

Weaknesses

IP23 rating does not protect against full immersion or heavy dust, requiring additional sealing in harsh environments.
Fixed 400 V output may necessitate transformers or converters for vessels using different voltage levels.
200 kVA capacity limits use on larger ships that require higher auxiliary power.
Noise level can be high without supplemental acoustic insulation, which may be a concern on passenger or cruise vessels.
Spare parts inventory may vary by region, potentially affecting lead times for repairs.

Typical Vessels: Bulk CarrierContainer ShipProduct TankerGeneral Cargo VesselOffshore Supply Vessel

Decision Guide: Choose if: you need a reliable 200 kVA, 400 V/60 Hz auxiliary power source for medium‑size commercial vessels and value Hyundai’s service network. Avoid if: the vessel requires higher power output, stricter environmental sealing (IP>23), or operates in noise‑sensitive applications without additional acoustic treatment.

Use Cases: Commonly installed as part of the ship's auxiliary power plant to run cargo handling equipment, refrigeration units, hotel services, and emergency lighting on bulk carriers, container ships, tankers, and offshore supply vessels. Often paired with a diesel engine set that matches the generator’s rating for continuous operation during port stays and at sea.

Datasheet

HFC 200kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in hotter engine rooms without derating.
Standard 50 Hz output matches most regional shore‑power and onboard systems.
Four‑pole design provides stable frequency with lower vibration at rated load.
Compact IP23 enclosure saves space in confined machinery spaces.
Hyundai Marine reputation for robust construction and long service intervals.

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for exposed deck installations.
200 kVA may be insufficient for larger vessels with high hotel‑load demands.
Fixed voltage of 440 V limits flexibility where other bus voltages are required.
Requires regular brush and bearing maintenance typical of synchronous machines.
Weight and dimensions are relatively large compared to newer compact diesel‑generator sets.

Typical Vessels: Coastal cargo vesselsFerriesOffshore supply shipsTugboatsMedium‑size fishing vessels

Decision Guide: Choose if you need a reliable 200 kVA auxiliary power source with high thermal tolerance for vessels operating in warm climates and have space for an IP23‑rated unit. Avoid if your vessel requires higher power output, stricter weather protection (e.g., IP55), or a more compact low‑maintenance diesel set.

Use Cases: Provides hotel load electricity, emergency standby power, and engine start‑up capability on medium‑size commercial ships; often installed in the main machinery space to supply lighting, HVAC, navigation equipment, and cargo handling systems.

Datasheet

HFC 200kVA 440V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides excellent thermal endurance and reliability under continuous load.
Compact IP23 enclosure allows deck or engine room installation while protecting against splashing water.
Four‑pole construction ensures stable frequency output, suitable for sensitive shipboard equipment.
Hyundai Marine Gen’s global service network facilitates spare parts availability and technical support.

Weaknesses

IP23 rating is not fully weather‑tight; additional shielding may be required in harsh marine environments.
Designed for 60 Hz operation only, limiting suitability for vessels operating on 50 Hz power systems.
No integrated sound‑attenuation enclosure; noise mitigation must be added separately.

Typical Vessels: Medium‑size tankersContainer ships (up to 5,000 TEU)Bulk carriersOffshore supply vesselsCruise ship auxiliary power units

Decision Guide: Choose if you need a proven 200 kVA diesel generator with robust thermal performance and Hyundai after‑sales support for 60 Hz fleets. Avoid if the vessel requires fully sealed (IP66+) enclosures, operates on 50 Hz systems, or demands built‑in acoustic insulation.

Use Cases: Provides shipboard hotel power, emergency standby generation, cargo handling equipment supply, and auxiliary propulsion support on commercial vessels where a reliable medium‑size generator is required.

Datasheet

HFC 200kVA 690V 50Hz unverified

· medium-speed marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint for a 200 kVA rating, fitting typical engine‑room spaces
Insulation class H provides good thermal endurance and reliability
Standard 690 V output matches most shipboard distribution systems
Four‑pole design ensures stable 50 Hz frequency operation
IP23 enclosure is adequate for indoor engine‑room environments

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for exposed wet locations
Requires a dedicated cooling system (air‑cooled), adding to installation space and complexity
Weight and size are larger than some newer high‑efficiency compact gensets of the same power
No built‑in redundancy; a single unit must be maintained for continuous availability

Typical Vessels: TankerBulk CarrierContainer ShipOffshore Supply VesselGeneral Cargo Vessel

Decision Guide: Choose if: you need a proven 200 kVA generator with standard 690 V output, can accommodate an IP23 indoor enclosure, and value the thermal robustness of class H insulation. Avoid if: the installation requires higher ingress protection (e.g., IP54 or above), space is extremely limited, or you are targeting ultra‑low emissions/high efficiency units.

Use Cases: Typically installed in the engine room to supply auxiliary power for hotel loads, cargo handling equipment, pumps, lighting and navigation systems, as well as providing emergency standby power when main propulsion generators are offline.

Datasheet

HFC 200kVA 690V 60Hz unverified

· high‑insulation‑class marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Insulation class H allows operation at higher ambient temperatures than lower‑rated units.
Compact 4‑pole design provides stable 60 Hz output suitable for most shipboard loads.
IP23 enclosure offers protection against dust and limited water spray, meeting typical marine deck requirements.
Standard 690 V rating matches common three‑phase ship distribution systems, simplifying integration.

Weaknesses

IP23 is not fully watertight; additional shielding may be required in harsh splash zones.
Limited to 60 Hz operation, making it unsuitable for vessels that require 50 Hz without frequency conversion.
No built‑in redundancy; a single unit must be paired with another set for critical power reliability.
Higher insulation class can increase initial cost compared with lower‑rated alternatives.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore support vessel

Decision Guide: Choose if: you need a compact, high‑temperature‑tolerant alternator for a 690 V, 60 Hz shipboard power system and can accommodate an IP23 enclosure. Avoid if: the installation environment demands full water‑tight protection (IP65+) or the vessel operates on a 50 Hz grid.

Use Cases: Commonly installed as part of a diesel‑generator set on medium‑size merchant vessels to supply auxiliary power for cargo handling equipment, hotel services, and navigation systems. Frequently paired with a medium‑speed diesel engine in a genset configuration for offshore support ships that require reliable, high‑temperature performance.

Datasheet

HFC 250kVA 400V 50Hz unverified

· air-cooled marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

250 kVA output suitable for medium‑size vessels' auxiliary loads
Compact IP23 enclosure saves engine‑room space
Class H insulation permits higher operating temperatures and improves durability
Four‑pole design delivers stable 50 Hz frequency under varying load conditions
Hyundai Marine reputation for reliable, low‑maintenance generators

Weaknesses

IP23 rating only protects against splashing; additional sealing may be required in harsh marine environments
Fixed 400 V output may need step‑up transformers for vessels requiring higher voltage distribution
Noise level can be high without supplemental acoustic insulation
Single unit provides no built‑in redundancy; a second generator is needed for critical applications
Limited publicly available performance curves compared with some competitor models

Typical Vessels: Bulk CarrierContainer ShipTankerGeneral Cargo VesselOffshore Supply Vessel

Decision Guide: Choose the HFC 250 kVA when you need a compact, reliable auxiliary generator for vessels with standard 400 V three‑phase distribution and can accommodate additional soundproofing or protection measures. Avoid if your vessel requires higher voltage output, strict dust/sea‑water ingress protection, or built‑in redundancy without adding a second unit.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size merchant ships to supply hotel loads, cargo handling equipment, and emergency power, especially where space constraints favor a compact IP23‑rated unit.

Datasheet

HFC 250kVA 400V 60Hz unverified

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact four‑pole design suitable for 1500 rpm operation, simplifying coupling with standard diesel engines
Class H insulation allows higher temperature operation and better thermal endurance
IP23 enclosure provides basic splash protection while keeping the unit relatively lightweight and easy to install
Standard 400 V/60 Hz output matches most North‑American and Asian vessel electrical systems
250 kVA rating fits a wide range of auxiliary power needs without excessive oversizing

Weaknesses

IP23 protection is limited; not suitable for harsh, wet deck environments requiring higher ingress protection (e.g., IP44 or above)
No documented emissions certification (e.g., IMO Tier III) – may be unsuitable for emission‑controlled areas
Lack of publicly confirmed certifications (ABS, DNV, USCG) could complicate class approval processes
Fixed 400 V output may require additional transformers for vessels using other voltage standards

Typical Vessels: Offshore supply vesselFerrySmall container shipCoastal tankerResearch vessel

Decision Guide: Choose if: you need a reliable 250 kVA auxiliary generator for vessels operating in moderate climates where basic splash protection (IP23) is sufficient, and you prefer a compact four‑pole unit with high‑temperature insulation. Avoid if: the vessel must meet strict emission tiers, operate in severe weather requiring higher IP ratings, or demands verified class society approvals before installation.

Use Cases: Typically installed as an auxiliary power source for ship service loads such as lighting, HVAC, cargo handling equipment, and emergency power supply on medium‑size commercial vessels. It can also serve as a standby generator in offshore platforms where space is limited.

Datasheet

HFC 250kVA 440V 50Hz unverified

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design suitable for limited engine room space
Class H insulation allows higher operating temperatures and better thermal endurance
IP23 enclosure provides protection against splashing water while maintaining easy access for maintenance
Standard 440 V/50 Hz output matches most international auxiliary power systems
Hyundai Marine Gen reputation for reliable long‑run performance

Weaknesses

Enclosure rating IP23 offers limited dust and water ingress protection compared with higher IP ratings
Designed for 50 Hz markets only; not directly compatible with 60 Hz vessels without rewinding
Typical diesel‑driven genset requires regular oil and filter changes, adding maintenance workload
Noise level can be higher than newer low‑speed or hybrid generator sets
Physical size may still be large for very small craft or high‑density engine rooms

Typical Vessels: Offshore supply vesselFerryMedium‑size container ship (up to ~10,000 gt)Cruise ship auxiliary power unitBulk carrier (mid‑range tonnage)

Decision Guide: Choose if you need a proven 250 kVA, 440 V/50 Hz marine generator with robust thermal capability and a compact footprint for vessels operating in regions where 50 Hz is standard. Avoid if the vessel requires higher IP protection, operates on 60 Hz systems, or prioritises ultra‑low noise and emissions over proven conventional diesel technology.

Use Cases: Typically installed as an auxiliary power source to supply shipboard hotel loads, navigation equipment, and emergency generators on medium‑size commercial vessels. It is also used in retrofit projects where space constraints demand a compact yet powerful genset that matches existing 440 V distribution networks.

Datasheet

HFC 250kVA 440V 60Hz unverified

· synchronous marine generator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact high‑speed design (1800 rpm) suitable for limited space installations
Class H insulation provides a wide thermal margin for reliable operation in hot engine rooms
Standard 440 V/60 Hz output matches most shipboard electrical systems
Four‑pole construction ensures stable frequency at 60 Hz
Open IP23 enclosure allows easy access for routine maintenance

Weaknesses

IP23 rating offers limited protection against water and dust; not suitable for exposed deck installations
Maximum output of 250 kVA may be insufficient for larger vessels requiring higher auxiliary power
High‑speed operation can generate more acoustic noise compared with low‑rpm generators
Single unit provides no built‑in redundancy; additional units needed for critical redundancy

Typical Vessels: Medium‑size container shipsBulk carriers (up to ~30 000 dwt)Offshore supply vesselsFerriesSmall cruise ships

Decision Guide: Choose if: you need a compact, high‑speed auxiliary generator with good thermal capability for engine‑room use on medium‑size vessels and standard 440 V/60 Hz supply. Avoid if: the installation requires higher ingress protection (IP55+), very low acoustic noise, or power ratings above 250 kVA.

Use Cases: Typically installed as a primary auxiliary generator on medium‑sized commercial ships, providing shipboard electricity for hotel services and cargo handling, and often paired with an identical unit for redundancy. Also used as emergency standby power where space constraints favor a high‑speed design.

Datasheet

HFC 250kVA 690V 50Hz unverified

· air‑cooled synchronous generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation at elevated temperatures, improving durability in hot engine rooms.
Standard 4‑pole design runs at 1500 rpm on 50 Hz systems, matching common marine prime movers.
Compact IP23 enclosure fits typical engine‑room spaces while protecting against large debris and water spray.
Hyundai Marine’s global service network facilitates spare parts availability and technical support.
Modular construction enables relatively straightforward maintenance and overhauls.

Weaknesses

IP23 rating offers limited protection; not suitable for environments requiring higher ingress protection (e.g., IP55).
No integrated acoustic enclosure, so additional silencing measures may be needed to meet crew comfort standards.
Fixed 690 V output may require step‑up/step‑down transformers on vessels with different distribution voltages.
Weight and footprint are not specified; installation may demand reinforced mounting structures.
Absence of documented IMO D‑2 or USCG type approval in publicly available data could limit acceptance on some flagged ships.

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselFerry

Decision Guide: Choose if you need a reliable 250 kVA auxiliary generator with Hyundai support, standard 4‑pole speed and can accommodate an IP23 enclosure. Avoid if your vessel requires higher ingress protection, built‑in sound attenuation, or must meet specific type‑approval certifications that are not confirmed for this model.

Use Cases: Commonly installed as the main auxiliary power source on medium‑size merchant ships, providing electricity for hotel loads, cargo handling equipment, and emergency power. Also used in offshore support vessels where a compact, high‑temperature tolerant generator is advantageous.

Datasheet

HFC 250kVA 690V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (250 kVA) in a compact 4‑pole design suitable for medium‑size vessels
Insulation class H provides good thermal tolerance and reliability
Hyundai Marine’s global service network simplifies spare‑parts logistics
Standard 690 V three‑phase output matches most shipboard distribution systems

Weaknesses

IP23 enclosure offers limited protection against dust and water ingress, unsuitable for harsh offshore environments without additional shielding
Designed for 60 Hz only; not directly usable on vessels that operate on 50 Hz grids
Weight and dimensions are typical of a 250 kVA set but can be significant for space‑constrained installations
Requires regular maintenance of the diesel engine and brushless exciter

Typical Vessels: TankerContainer shipBulk carrierCruise liner (mid‑size)Offshore supply vessel

Decision Guide: Choose if you need a proven, mid‑range auxiliary generator with strong Hyundai support and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection, dual‑frequency capability, or ultra‑compact weight/size constraints.

Use Cases: Provides hotel power, cargo pump operation, navigation equipment supply, and emergency standby power on vessels where a reliable 250 kVA source is required for normal and contingency conditions.

Datasheet

HFC 315kVA 400V 50Hz unverified

· four-pole marine alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (315 kVA) suitable for medium‑size vessel hotel loads
Robust IP23 enclosure that resists dust and limited splash exposure, allowing deck installation without a full weatherproof housing
Insulation class H permits operation at higher winding temperatures, improving durability in hot climates
Hyundai brand reputation for reliability and long service intervals
Standard 400 V/50 Hz rating matches most international shipboard electrical systems

Weaknesses

IP23 protection is not fully weather‑proof; additional shielding required in exposed locations
Fixed 400 V/50 Hz output may need conversion equipment on vessels that run on 60 Hz or different voltages
Physical size and weight are larger than newer high‑speed, compact alternators, affecting installation space
Typically supplied as an alternator only; a separate diesel engine and control system must be sourced and integrated
Limited built‑in monitoring features compared with modern fully integrated genset packages

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑output auxiliary generator for vessels with a 400 V/50 Hz system and can provide adequate shelter for the IP23 enclosure. Avoid if: the ship operates on 60 Hz, requires higher ingress protection (e.g., IP55), or has severe space constraints that favor more compact, integrated gensets.

Use Cases: Commonly installed as part of an auxiliary power plant to supply hotel loads, emergency lighting, cargo handling equipment, and navigation systems on medium‑to‑large commercial vessels. Often paired with a diesel engine and remote monitoring panel for continuous operation during port stays or while underway.

Datasheet

HFC 315kVA 400V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact, deck‑mountable design with IP23 enclosure suitable for typical shipboard environments
Class H insulation allows operation at higher temperatures without derating
Four‑pole construction provides stable 60 Hz output and good load sharing
Hyundai after‑sales network offers strong parts availability and technical support
Rated 315 kVA meets the auxiliary power needs of many medium‑size vessels

Weaknesses

IP23 rating is not fully weather‑tight; additional protection needed in harsh marine exposure
Limited to 400 V/60 Hz – not suitable for vessels requiring 50 Hz or higher voltage systems
Maintenance intervals typical of diesel generators (oil change, filter replacement) add operational cost
Power rating may be insufficient for larger ships with high hotel loads
Noise and vibration levels are comparable to conventional diesel gensets; may require isolation

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore support vesselFerry

Decision Guide: Choose if: you need a reliable ~300 kVA auxiliary generator for a 60 Hz vessel, have limited installation space and value Hyundai's service network. Avoid if: the ship requires 50 Hz power, higher voltage output, or a fully sealed (IP66+) enclosure for extreme weather conditions.

Use Cases: Commonly installed as the main auxiliary generator to supply hotel loads, navigation equipment, and emergency power on medium‑size commercial vessels; also used in standby/shore‑power configurations where 400 V 60 Hz is standard.

Datasheet

HFC 315kVA 440V 50Hz unverified

· synchronous alternator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

315 kVA output matches the auxiliary power needs of medium‑size vessels.
Class H insulation permits operation up to 180 °C, extending service life.
Compact IP23 enclosure protects against dust and water spray while fitting confined engine rooms.
Four‑pole design ensures stable 50 Hz frequency with low vibration.
Hyundai Marine brand offers proven reliability and wide spare‑part support.

Weaknesses

IP23 rating does not guard against heavy splashing or immersion, limiting placement in harsh wet areas.
Only 50 Hz operation; vessels requiring 60 Hz or dual‑frequency need a different model.
Alternator only – requires a separate diesel engine/prime mover, adding cost and installation complexity.
No integrated automatic voltage regulator is specified, so an external AVR may be needed.
Weight and mounting requirements can be substantial for smaller vessels.

Typical Vessels: Container ShipBulk CarrierProduct TankerGeneral Cargo VesselOffshore Supply Vessel

Decision Guide: Choose if: you need a reliable 315 kVA, 440 V, 50 Hz auxiliary generator for medium‑size vessels and have space for an IP23 alternator that will be paired with your own prime mover. Avoid if: the installation requires higher ingress protection (IP55+), dual‑frequency capability, or an all‑in‑one genset with integrated engine.

Use Cases: Typically installed as the main auxiliary generator on cargo ships, providing hotel power and emergency supply; also used in offshore support vessels for deck machinery and accommodation loads.

Datasheet

HFC 315kVA 440V 60Hz unverified

· diesel-driven synchronous alternator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Rated output of 315 kVA suitable for medium‑size vessels' auxiliary power needs
Compact IP23 indoor enclosure simplifies installation in engine rooms or control spaces
Insulation class H provides tolerance to high ambient temperatures
Hyundai brand reputation for durability and long service intervals
Modular construction allows relatively quick removal and replacement during maintenance

Weaknesses

IP23 rating offers limited protection against water spray; not ideal for exposed outdoor mounting
Only available in 60 Hz version, unsuitable for vessels operating on 50 Hz systems without conversion
Standard model does not include an integrated remote monitoring/control panel (optional accessory required)
Weight and footprint are comparable to other 300‑kVA generators – may be a constraint in very space‑limited installations
No built‑in redundancy; a second unit is needed for full emergency power coverage

Typical Vessels: General cargo / bulk carrier (up to ~30,000 dwt)Medium‑size tankerOffshore supply vesselFerryCruise ship auxiliary generator set

Decision Guide: Choose if: you need a reliable 315 kVA diesel generator for indoor installation on vessels that operate on 60 Hz and can accept an IP23 enclosure. Avoid if: the vessel requires higher ingress protection (e.g., outdoor mounting), must run on 50 Hz, or demands an integrated remote monitoring system as standard.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, navigation equipment, and emergency systems. It is also used in standby/emergency configurations where a single generator can meet regulatory minimums for critical load coverage on medium‑size commercial vessels.

Datasheet

HFC 315kVA 690V 50Hz unverified

· low-speed diesel-driven alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) allows robust operation under heavy load transients
Compact IP23 enclosure suitable for typical engine rooms with limited space
Four‑pole design provides stable 50 Hz output and good voltage regulation
Hyundai Marine reputation for durability and worldwide service support
Standard 690 V three‑phase output matches most marine distribution systems

Weaknesses

IP23 rating offers only splash protection; not dust‑tight or fully weather‑proof
315 kVA may be undersized for larger vessels requiring higher auxiliary power
No explicit information on compliance with IMO Tier III emissions (may need retrofit)
Single‑unit configuration lacks built-in redundancy for critical loads
Limited published data on fuel consumption and noise levels

Typical Vessels: Coastal cargo vesselsProduct tankers up to ~15,000 DWTOffshore supply / platform supply vesselsFerriesSmall cruise ships

Decision Guide: Choose if: you need a reliable 300‑350 kVA auxiliary generator for medium‑size vessels, space is at a premium and you value Hyundai's global support network. Avoid if: the vessel requires higher power output, strict IMO Tier III emission limits, or an enclosure with higher ingress protection (e.g., IP54).

Use Cases: Typically installed as the main auxiliary generator in medium‑sized merchant ships, providing power for hotel loads, cargo handling equipment, and emergency systems. Also used on offshore supply vessels where a compact, robust generator is required for both normal operation and standby duty.

Datasheet

HFC 315kVA 690V 60Hz unverified

· marine alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Hyundai brand reputation for durability and long service life
High insulation class H allows operation at elevated temperatures
Standard 4‑pole design provides stable 60 Hz output at 1500 rpm
Compact IP23 enclosure fits typical machinery spaces without extensive ventilation
Suitable power rating (315 kVA) for medium‑size auxiliary loads on tankers, container ships and offshore vessels

Weaknesses

IP23 rating offers only limited protection against water spray; not suitable for harsh exterior environments
No built‑in advanced digital monitoring or remote diagnostics in the base model
Fixed 690 V output may require additional step‑up/down gear for vessels with different bus voltages
Designed for 60 Hz operation only, limiting use on ships that standardise on 50 Hz

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise ship (auxiliary hotel load)

Decision Guide: Choose if you need a reliable 315 kVA, 690 V, 60 Hz generator for indoor installation on vessels that operate on the US/Asian 60 Hz standard and value Hyundai’s proven mechanical robustness. Avoid if you require higher IP protection, integrated smart monitoring, or compatibility with 50 Hz power systems.

Use Cases: Typically installed as a main auxiliary generator to supply hotel services (lighting, HVAC, cargo handling equipment) and as an emergency standby unit on medium‑size commercial vessels where space is limited and the machinery room environment meets IP23 conditions.

Datasheet

HFC 400kVA 400V 50Hz unverified

· diesel-driven marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 400 kVA suitable for medium‑size vessels
Class H insulation allows operation at elevated temperatures, improving reliability in hot climates
Four‑pole design provides stable 50 Hz frequency with reduced vibration
IP23 enclosure protects against dust and spray, suitable for deck‑mounted installations
Widely used by shipyards, ensuring good parts availability and service support

Weaknesses

IP23 rating does not protect against heavy rain or immersion; additional shielding may be required in exposed locations
Fixed 400 V output may need step‑up transformers for vessels requiring higher bus voltages
Diesel engine integration adds weight and requires regular fuel maintenance
Noise and emissions levels depend on the coupled diesel engine, which may need extra mitigation to meet Tier III standards

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselFerry

Decision Guide: Choose the HFC 400 kVA when you need a proven, medium‑power generator with robust thermal insulation and standard deck‑mount protection for vessels operating in moderate climates. Avoid it if the installation area is exposed to heavy rain or sea spray without additional shielding, or if higher bus voltages or ultra‑low emissions are mandatory.

Use Cases: Commonly installed as the main auxiliary power source on medium‑size cargo ships and offshore support vessels, providing electricity for hotel loads, cargo handling equipment, and emergency systems. It is also used in retrofits where a reliable 400 kVA unit can replace older generators without major redesign of the electrical plant.

Datasheet

HFC 400kVA 400V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for medium‑size vessels
Robust Class H insulation allows operation up to 180 °C and reduces cooling requirements
Compact IP23 enclosure saves deck space while protecting against dust
Hyundai’s proven marine‑grade engine and alternator design offers long service intervals
Integrated control panel with automatic voltage regulation for stable output

Weaknesses

IP23 rating provides limited water protection; not suitable for harsh spray zones without additional shielding
Designed for 60 Hz systems only, limiting use on vessels standardized to 50 Hz
Noise level can be higher than low‑speed generators, requiring acoustic insulation in confined spaces
Fuel consumption is typical of high‑speed diesel sets; may be less efficient than newer Tier III compliant models
Physical dimensions may still exceed the tightest space constraints on very small craft

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise ship (mid‑size)Ferry

Certifications: ABSDNV GL

Decision Guide: Choose if: you need a reliable 400 kVA auxiliary power source for a 60 Hz vessel, space is at a premium and you value Hyundai’s service network. Avoid if: the ship operates on a 50 Hz system, requires higher ingress protection (e.g., IP55) or must meet Tier III emission limits without after‑treatment.

Use Cases: Typically installed as an auxiliary generator for hotel loads, cargo handling equipment, and emergency power on medium‑size merchant ships and offshore support vessels. It is also used in dual‑fuel configurations where a diesel engine drives the alternator for peak load periods.

Datasheet

HFC 400kVA 440V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class‑H insulation provides high thermal endurance and reliability under continuous load
Standard 440 V/50 Hz output matches most international vessel power systems
Compact 4‑pole design suited for medium‑size marine installations
IP23 enclosure offers protection against splashing water and dust, suitable for typical engine room environments
Hyundai Marine’s established service network simplifies spare parts logistics

Weaknesses

IP23 rating is only splash‑proof; not adequate for highly corrosive or dusty compartments requiring higher ingress protection
Fixed 400 kVA output may require multiple units on larger vessels with high hotel loads
No integrated sound attenuation package, so additional silencing measures may be needed in noise‑sensitive areas
Emission compliance details (e.g., Tier III) are not specified for this model

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryPassenger ferry

Decision Guide: Choose if: you need a proven 400 kVA generator with standard voltage/frequency, robust construction and easy access to Hyundai service support. Avoid if: the installation requires higher ingress protection (IP55+), ultra‑low noise operation, or stricter emission limits that are not confirmed for this model.

Use Cases: Commonly installed as a main auxiliary power source on medium‑size merchant vessels, providing hotel load and emergency power; also used as a dedicated generator for critical systems such as navigation equipment and cargo handling gear.

Datasheet

HFC 400kVA 440V 60Hz unverified

· diesel-driven alternator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) permits operation at elevated temperatures without derating.
Four‑pole design provides stable 60 Hz output suitable for most shipboard loads.
IP23 enclosure offers basic protection against dust and water spray, reducing maintenance in moderate environments.
Hyundai Marine’s long track record ensures parts availability and service support worldwide.

Weaknesses

IP23 rating is not fully sealed; additional weather‑proofing may be required for harsh marine exposure.
Standard output voltage of 440 V may need step‑down transformers on vessels that use the more common 415 V system.
Physical size and weight are typical for legacy 400 kVA gensets, potentially larger than newer high‑efficiency models.

Typical Vessels: Medium‑size container feederProduct tanker (up to 30,000 dwt)Offshore supply vesselCruise ship auxiliaryCoastal ferry

Decision Guide: Choose if you need a proven 400 kVA diesel generator with robust temperature tolerance and are comfortable providing additional protection for the IP23 enclosure. Avoid if your vessel requires a fully sealed (IP55+) unit, operates on a 415 V system without transformer capacity, or seeks the smallest footprint possible.

Use Cases: Commonly installed as main auxiliary power on medium‑size cargo vessels, emergency generator on cruise ships, and standby power for offshore platform support where reliable diesel generation is mandatory.

Datasheet

HFC 400kVA 690V 50Hz unverified

· medium-speed marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

400 kVA rating matches the auxiliary power needs of many tankers, container ships and bulk carriers.
Insulation class H allows operation in high ambient temperature environments.
IP23 enclosure provides protection against dust larger than 12.5 mm and splash water, suitable for typical engine‑room conditions.
Four‑pole design yields a stable 1500 rpm speed at 50 Hz, ensuring smooth power output.
Hyundai Marine Gen brand offers established global service network and spare‑parts availability.

Weaknesses

IP23 rating does not protect against heavy water spray or immersion; more demanding environments may require IP55 or higher.
Limited to 50 Hz operation, making it unsuitable for vessels that standardise on 60 Hz systems.
Medium‑speed design can be less fuel‑efficient than high‑efficiency low‑speed generators for the same power output.
No integrated sound‑attenuation enclosure; additional silencing may be needed in noise‑sensitive installations.
Physical footprint is larger than compact high‑speed generator sets of comparable rating.

Typical Vessels: TankerContainer shipBulk carrierGeneral cargo vesselOffshore supply vessel

Decision Guide: Choose if you need a reliable 400 kVA, 690 V 50 Hz generator with robust temperature tolerance and prefer Hyundai's service support. Avoid if your installation requires higher ingress protection (e.g., IP55), 60 Hz compatibility, or the smallest possible footprint.

Use Cases: Commonly installed as main auxiliary power source for hotel loads, cargo handling equipment, emergency power supply, and to start main propulsion engines on medium‑size commercial ships.

Datasheet

HFC 400kVA 690V 60Hz unverified

· high-speed diesel-driven alternator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for vessels with limited engine‑room space
Class H insulation permits operation in high ambient temperature zones
Standard 690 V/60 Hz output matches most US‑registered ship electrical systems
Hyundai Marine brand offers extensive after‑sales support and spare parts network
Four‑pole design provides stable frequency at 1800 rpm, simplifying engine coupling

Weaknesses

IP23 enclosure only protects against splash; not suitable for harsh dusty or wet environments without additional protection
High‑speed operation can lead to higher wear and fuel consumption compared with low‑speed generators
Limited to 60 Hz – not directly compatible with vessels requiring 50 Hz systems
No built‑in redundancy; a separate standby unit is required for emergency power compliance

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (auxiliary power)Offshore supply vessel

Decision Guide: Choose if you need a compact 400 kVA generator for a US‑flagged or 60 Hz vessel, value Hyundai's service network, and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (e.g., IP55), operates primarily on 50 Hz, or prioritises low‑speed fuel efficiency over size.

Use Cases: Typically installed as a main auxiliary generator on medium‑size cargo vessels to supply hotel loads and deck machinery, or as a secondary emergency generator where space constraints preclude larger units.

Datasheet

HFC 500kVA 400V 50Hz unverified

· diesel‑generator set

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) allows operation in elevated temperature environments
Compact IP23 enclosure provides splash protection while keeping size manageable for tight engine rooms
Four‑pole design gives stable 50 Hz output suitable for standard shipboard electrical systems
Proven Hyundai engineering reputation for durability and low maintenance intervals

Weaknesses

IP23 rating does not protect against dust ingress or heavy water exposure; unsuitable for harsh offshore spray zones without additional shielding
Single‑frequency (50 Hz) only – not ideal for vessels that require dual‑frequency capability (e.g., 60 Hz markets)
500 kVA may be undersized for large cruise ships or high‑power LNG carriers requiring larger hotel loads

Typical Vessels: Container shipBulk carrierProduct tankerGeneral cargo vesselOffshore supply vessel

Certifications: DNV GL Marine CertificationABS Classification

Decision Guide: Choose if: you need a reliable 500 kVA auxiliary generator for vessels operating on 400 V/50 Hz systems, with limited engine‑room space and high ambient temperatures. Avoid if: the installation requires higher ingress protection (IP≥54), dual‑frequency capability, or power output exceeding 500 kVA.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling equipment, and emergency power on medium‑size merchant vessels. Often paired with a diesel engine in a genset configuration for continuous operation during voyages and port stays.

Datasheet

HFC 500kVA 400V 60Hz unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 500 kVA in a compact footprint suitable for limited engine‑room space.
Class H insulation allows operation at elevated temperatures, reducing cooling system load.
IP23 enclosure provides protection against splashing water and dust while allowing easy access for maintenance.
Four‑pole design ensures stable 60 Hz output with low vibration, beneficial for sensitive onboard equipment.
Hyundai brand reputation for durability and long service intervals.

Weaknesses

IP23 rating is not fully watertight; unsuitable for locations exposed to heavy spray or immersion.
Designed for 60 Hz systems only, limiting applicability in regions where 50 Hz is standard.
Requires a dedicated cooling water system; installation complexity can increase initial fit‑out cost.
Weight and mounting dimensions are relatively high compared with newer lightweight alternatives (exact figures not disclosed).
Standard diesel drive may have higher fuel consumption than modern low‑speed or hybrid options.

Typical Vessels: Container shipBulk carrierProduct tankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven 500 kVA auxiliary power source for a 60 Hz fleet, have adequate engine‑room space and cooling water infrastructure, and value Hyundai's service network. Avoid if: the installation area is exposed to heavy spray or immersion (IP23 may be insufficient), the vessel operates on a 50 Hz electrical system, or weight/space constraints demand a newer lightweight generator.

Use Cases: Typically installed as part of the ship’s auxiliary power plant to run hotel loads, cargo handling equipment, and emergency systems on medium‑size commercial vessels. It is often paired with diesel engines in a genset configuration and integrated into the vessel’s power management system for load sharing and redundancy.

Datasheet

HFC 500kVA 440V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and high power density for its 500 kVA rating
Robust IP23 enclosure suitable for typical shipboard environments
Class H insulation allows operation at elevated temperatures
Proven Hyundai brand reputation for durability and low maintenance
Standard 50 Hz output matches most marine electrical systems

Weaknesses

IP23 rating offers limited protection against water ingress in harsh weather
Maximum output of 500 kVA may be insufficient for larger vessels or high hotel loads
Noise and vibration levels are typical of diesel‑driven units, requiring sound insulation
Requires regular oil changes and periodic inspection of brushes/rotor
Limited to 4‑pole design; not optimized for ultra‑low speed operation

Typical Vessels: Container ship (up to ~10 000 gt)Product tankerBulk carrier (handysize)Offshore supply vesselCruise ship auxiliary power unit

Decision Guide: Choose if: you need a proven, compact 500 kVA generator for medium‑size merchant or offshore vessels and can accommodate an IP23 enclosure. Avoid if: the vessel requires higher than 500 kVA, needs a fully weather‑proof (IP44+) unit, or demands ultra‑low noise operation.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo handling equipment, and emergency systems on container ships, tankers, bulk carriers, and offshore support vessels. Often paired with a diesel engine set that meets IMO Tier II emission standards.

Datasheet

HFC 500kVA 440V 60Hz unverified

· air-cooled synchronous generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (500 kVA) suitable for medium‑size vessel hotel loads
Insulation class H provides good thermal tolerance and reliability
Standard 440 V, 60 Hz rating matches most US/Asian ship electrical systems
Compact footprint typical of Hyundai designs eases installation in limited spaces
Proven track record of Hyundai Marine Gen equipment in commercial fleets

Weaknesses

IP23 enclosure offers only basic protection; not ideal for very wet or corrosive environments
Fixed 60 Hz frequency limits use on vessels requiring 50 Hz systems
Higher operating speed (1800 rpm) can increase bearing wear compared with low‑speed units
No integrated digital control panel – requires separate controller/monitoring package
Limited built‑in redundancy features; typically paired as a set for emergency power

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore support vessel

Decision Guide: Choose if you need a reliable 500 kVA auxiliary generator for a 440 V, 60 Hz shipboard system and have space constraints; the unit integrates well with existing Hyundai power‑distribution gear. Avoid if operating in harsh wet environments that demand higher IP ratings, or when a 50 Hz supply or fully integrated digital monitoring is required.

Use Cases: Commonly installed as an auxiliary generator to supply hotel loads, deck machinery, and emergency power on medium‑size commercial vessels; often paired with another unit for redundancy in critical applications.

Datasheet

HFC 500kVA 690V 50Hz unverified

· diesel-driven marine alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) gives excellent thermal endurance and longer service intervals
Compact 4‑pole design runs at 1500 rpm, allowing direct coupling to standard diesel engines without gear reduction
Integrated control panel with built-in protection functions simplifies installation and operation
IP23 enclosure provides basic protection against splash water and large foreign objects while keeping the unit relatively lightweight
Proven Hyundai Marine Gen brand reputation for durability in harsh marine environments

Weaknesses

IP23 rating is not dust‑tight nor protected against heavy spray; additional shielding may be required in harsh weather zones
Maximum output of 500 kVA limits use on larger vessels that need >1 MVA auxiliary power
Standard cooling system relies on seawater flow; fouling or blockage can reduce performance if not regularly maintained
Noise level is typical for a 4‑pole diesel generator and may require extra acoustic insulation in passenger‑focused ships
Limited to 690 V three‑phase output, so additional step‑up/down transformers are needed for vessels with different voltage standards

Typical Vessels: Container shipBulk carrierProduct tankerOffshore supply vesselCruise ship (mid‑size)LNG carrier (auxiliary power)

Decision Guide: Choose if: you need a reliable, mid‑range 500 kVA auxiliary generator with high thermal endurance and integrated controls for vessels up to ~30,000 gt where space is moderate and IP23 protection is sufficient. Avoid if: the vessel requires higher ingress protection (IP55/65), power above 1 MVA, or ultra‑low noise levels without additional acoustic treatment.

Use Cases: Typically installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on commercial cargo vessels and offshore platforms. It is also used in dual‑generator configurations where redundancy and load sharing are required.

Datasheet

HFC 500kVA 690V 60Hz unverified

· Four-pole synchronous generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

500 kVA output suitable for medium‑size vessel auxiliary power requirements
Four‑pole design provides stable 60 Hz operation with low vibration
Insulation class H permits reliable operation at elevated temperatures common in engine rooms
Compact IP23 enclosure fits confined spaces while protecting against splashing water
Hyundai Marine’s established service network ensures ready availability of spares and support

Weaknesses

IP23 protection rating may be inadequate for harsh offshore environments that demand higher ingress protection (e.g., IP55)
Fixed 60 Hz frequency limits applicability on vessels standardized on 50 Hz power systems
Rated at 690 V only; additional transformers are required if other system voltages are needed
Weight and overall dimensions are not specified here, which can affect installation planning
No integrated automatic voltage regulator is indicated, potentially requiring an external AVR

Typical Vessels: Offshore Supply VesselFerryResearch VesselSmall Cruise ShipProduct Tanker (auxiliary power)

Decision Guide: Choose this generator if you need a reliable 500 kVA, 690 V, 60 Hz source for auxiliary hotel loads on vessels where IP23 protection and class H insulation meet the environmental conditions. Avoid it on ships that operate on 50 Hz systems, require higher ingress protection (IP55 or above), or need an integrated voltage regulator.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel services, cargo handling equipment, and emergency power on medium‑size commercial vessels; also used in standby/emergency configurations where rapid start‑up and robust thermal performance are required.

Datasheet

HFC 630kVA 400V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High rated output (630 kVA) matches the standard 400 V/50 Hz ship service bus.
Class H insulation allows operation at elevated temperatures without derating.
Four‑pole design provides stable frequency and lower vibration compared with higher‑pole units.
IP23 enclosure is suitable for ventilated engine rooms while protecting against dust.
Hyundai’s long track record gives confidence in durability and parts support.

Weaknesses

IP23 rating does not protect against water spray; the unit must be installed in a dry, well‑ventilated space.
Single frequency (50 Hz) – not suitable for vessels that require dual‑frequency capability.
Physical size and weight are typical of high‑power generators, limiting installation on very small hulls.
Initial capital cost is generally higher than low‑cost generic alternatives.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IMO Type ApprovalDNV Classification

Decision Guide: Choose if you need a reliable 630 kVA auxiliary power source that matches the standard 400 V/50 Hz ship system, have space for an IP23‑rated engine‑room installation, and value Hyundai’s service network. Avoid if your vessel requires higher ingress protection (e.g., IP55), dual‑frequency operation, or has severe weight/space constraints.

Use Cases: Typically installed as the main auxiliary generator on medium‑to‑large commercial vessels, providing power for hotel services, cargo handling equipment, and emergency loads; also used in retrofit projects where a proven 630 kVA unit is required to meet existing electrical system specifications.

Datasheet

HFC 630kVA 400V 60Hz unverified

· brushless synchronous generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (630 kVA) suitable for large ship hotel loads and propulsion auxiliaries
Insulation class H allows operation in elevated ambient temperatures
Standard 400 V/60 Hz rating matches most US‑type vessel electrical systems
Four‑pole design provides stable frequency regulation under varying load conditions

Weaknesses

IP23 enclosure offers only limited protection against water spray and dust; additional shielding may be required in harsh marine environments
Designed for 60 Hz operation only, limiting use on vessels standardized to 50 Hz
No built‑in redundancy features (e.g., parallel operation) mentioned in the basic specification

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable ~600 kVA auxiliary generator for a 60 Hz, 400 V system on a large commercial or offshore vessel and can accommodate an IP23 enclosure. Avoid if: the installation requires a higher ingress protection rating, must operate at 50 Hz, or demands built‑in redundancy without additional equipment.

Use Cases: Commonly installed as a main hotel‑load generator, emergency power source, or propulsion‑auxiliary unit on large tankers, container ships and cruise vessels where high continuous power and temperature resilience are required.

Datasheet

HFC 630kVA 440V 50Hz unverified

· diesel-driven marine alternator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (630 kVA) suitable for large merchant vessels
Robust IP23 enclosure protects against spray and dust in harsh marine environments
Insulation class H allows operation at elevated temperatures, enhancing reliability
Four‑pole design provides stable 50 Hz frequency with low vibration
Hyundai Marine’s reputation for durable construction and long service intervals

Weaknesses

Relatively large footprint compared to newer compact generator sets
Standard IP23 rating may require additional shielding in heavily splashed areas
No built‑in exhaust after‑treatment (e.g., SCR) – emissions compliance depends on engine selection
Limited modularity; retrofits may be more complex than with containerized gensets

Typical Vessels: Crude Oil TankerContainer ShipBulk CarrierGeneral Cargo VesselOffshore Supply Vessel

Decision Guide: Choose if: you need a proven, high‑capacity generator for main auxiliary service on large vessels and value Hyundai’s long‑track record of reliability. Avoid if: space is at a premium, you require higher emission standards that demand integrated after‑treatment, or you prefer a fully containerized genset with built‑in sound attenuation.

Use Cases: Typically installed as the primary auxiliary generator on large merchant ships to supply propulsion auxiliaries, cargo handling equipment, and hotel services. Also used as an emergency power source on vessels where redundancy and high output are critical.

Datasheet

HFC 630kVA 440V 60Hz unverified

· high‑speed diesel‑driven alternator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 630 kVA in a relatively compact footprint suitable for medium‑size vessels
Robust four‑pole construction with Class H insulation for reliable operation at elevated temperatures
Standard 60 Hz output matches US‑flagged vessel requirements and many offshore platforms
IP23 enclosure offers protection against dust and limited water spray while keeping the unit accessible for maintenance

Weaknesses

IP23 rating provides only limited ingress protection; not ideal for harsh marine environments requiring higher sealing (e.g., IP55)
Designed for 60 Hz operation – derating or rewinding needed for 50 Hz markets
Maintenance‑intensive compared with newer oil‑free or permanent‑magnet alternatives
Weight and mounting requirements can be significant on vessels with strict weight‑distribution constraints

Typical Vessels: Container shipProduct tankerBulk carrierCruise liner (auxiliary power)Offshore supply vessel

Certifications: ABSDNV GL

Decision Guide: Choose if: you need a proven, high‑output auxiliary generator for a US‑flagged or 60 Hz vessel with limited installation space and can accommodate routine maintenance. Avoid if: the installation requires a higher IP rating, operation on 50 Hz systems, or you prefer low‑maintenance oil‑free technology.

Use Cases: Typically installed as an auxiliary power source in the engine room of medium‑size cargo ships and offshore vessels, supplying hotel loads, emergency generators, and shore‑power conversion equipment where a reliable 630 kVA supply is required.

Datasheet

HFC 630kVA 690V 50Hz unverified

· 4-pole synchronous generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (630 kVA) suitable for medium‑size vessels' hotel and cargo loads
Class H insulation allows operation at elevated temperatures, improving reliability in hot climates
IP23 enclosure provides protection against splashing water while allowing adequate ventilation
Four‑pole design ensures stable 50 Hz frequency with lower vibration compared to two‑pole units
Hyundai Marine Gen reputation for durable construction and worldwide service support

Weaknesses

Enclosure is only IP23, not fully sealed; may require additional protection in very harsh marine environments
Physical size and weight can be significant, limiting installation space on smaller vessels
Standard diesel fuel operation – not a dual‑fuel or LNG option for emissions‑focused ships
Maintenance intervals typical of high‑output diesel generators (oil changes, brush inspections) may increase operational cost
Limited built‑in emission control; retrofits (SCR, DPF) may be needed to meet stricter IMO Tier III standards

Typical Vessels: Container shipBulk carrierProduct tankerGeneral cargo vesselOffshore supply vesselCruise liner (auxiliary power)

Decision Guide: Choose if you need a reliable 630 kVA auxiliary generator for vessels operating in warm climates, where robust temperature tolerance and proven service support are priorities. Avoid if the installation space is constrained, full enclosure protection is required, or the vessel must meet stringent low‑emission (dual‑fuel/LNG) regulations without additional retrofits.

Use Cases: Typically installed as a main auxiliary generator to supply hotel services, cargo handling equipment, and emergency power on medium‑size merchant ships. Also used in offshore support vessels where a single high‑output diesel generator is preferred for simplicity and redundancy management.

Datasheet

HFC 630kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (630 kVA) suitable for medium‑size vessel hotel loads
Insulation class H provides good thermal endurance in hot engine rooms
Four‑pole design ensures stable 60 Hz frequency under varying load
Compact IP23 enclosure fits limited installation spaces on deck or in machinery space

Weaknesses

IP23 rating offers only limited protection against water spray; not ideal for exposed wet decks
Designed solely for 60 Hz operation, unsuitable where 50 Hz is required
No built‑in sound attenuation information; may need additional muffling in noise‑sensitive areas

Typical Vessels: Container shipBulk carrierGeneral cargo vesselCruise liner (mid‑size)Offshore supply vessel

Decision Guide: Choose if you need a reliable 630 kVA, 690 V, 60 Hz auxiliary generator for vessels operating in temperate climates and have space constraints that suit an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP44 or above) or must operate on a 50 Hz power system.

Use Cases: Typically installed as a main auxiliary generator to supply hotel services, cargo handling equipment, and emergency power on medium‑size commercial vessels; also used in standby mode for redundancy in shipboard electrical distribution systems.

Datasheet

HFC 800kVA 400V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) suitable for large hotel and propulsion‑auxiliary loads
Robust IP23 enclosure with Class H insulation for harsh marine environments
Four‑pole design provides stable frequency and low vibration at 50 Hz
Integrated control system compatible with common shipboard automation platforms
Proven track record of Hyundai Marine Gen units in commercial fleets

Weaknesses

Relatively large footprint and weight may limit installation on smaller vessels
Diesel fuel consumption is higher than newer hybrid or LNG‑based alternatives
IP23 rating offers limited protection against direct water ingress; not ideal for exposed deck mounting
Noise and exhaust emissions require adequate silencing and ventilation measures
Standard 400 V output may need step‑up transformers for vessels requiring higher voltages

Typical Vessels: Container shipBulk carrierCrude oil tankerProduct tankerOffshore support vesselCruise liner

Decision Guide: Choose if: you need a proven, high‑capacity diesel generator for a large commercial vessel with ample engine room space and standard 400 V three‑phase power. Avoid if: the vessel has strict space constraints, requires higher voltage output without transformers, or aims to minimise diesel emissions by using alternative fuels.

Use Cases: Typically installed as the main auxiliary generator supplying hotel services, cargo handling equipment, and emergency power on large merchant ships; also used as a standby unit for dynamic positioning systems on offshore support vessels.

Datasheet

HFC 800kVA 400V 60Hz unverified

· 4‑pole low‑speed diesel‑driven alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (800 kVA) suitable for large auxiliary loads
Robust IP23 enclosure provides protection against splashing and dust in deck installations
Class H insulation allows operation at elevated temperatures, enhancing reliability in hot climates
Four‑pole design yields lower rotational speed, reducing fuel consumption and wear on bearings
Hyundai Marine Gen reputation for long‑term service support and spare parts availability

Weaknesses

Relatively large physical footprint and weight may limit installation in space‑constrained vessels
IP23 rating is not fully watertight; additional shielding needed for harsh marine exposure
Fixed 400 V, 60 Hz output limits use on vessels that standardise on 50 Hz systems
Higher initial capital cost compared with smaller generators of similar efficiency

Typical Vessels: Container shipsCruise linersBulk carriersOffshore supply vesselsNaval auxiliaries

Decision Guide: Choose if you need a proven, high‑capacity 800 kVA generator for 400 V 60 Hz auxiliary power on large commercial or offshore vessels and have sufficient installation space. Avoid if the vessel operates on a 50 Hz system, requires a fully sealed (IP66+) unit, or has strict weight/space constraints.

Use Cases: Commonly installed as the main auxiliary generator on container and cruise ships to supply hotel loads, deck machinery, and emergency power; also used on offshore platforms and large tankers where reliable high‑power generation is critical.

Datasheet

HFC 800kVA 440V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) in a single unit reduces the number of generators needed.
Insulation class H provides excellent thermal endurance for hot marine environments.
Four‑pole design ensures stable frequency and low vibration at 50 Hz.
IP23 enclosure offers protection against dust and water spray while allowing easy maintenance access.
Hyundai Marine’s global service network gives reliable spare‑parts support.

Weaknesses

IP23 rating is only moderate; not suitable for areas with heavy wash‑down or splash exposure.
Physical size and weight are substantial, requiring dedicated engine room space and robust mounting.
Rated for 50 Hz operation only; use in 60 Hz regions requires derating or a different model.
No integrated sound attenuation package – additional silencing may be required for noise‑sensitive vessels.

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>10,000 TEU)Cruise linersOffshore supply vesselsLNG carriers

Certifications: ABSDNV GL

Decision Guide: Choose if you need a single high‑capacity auxiliary generator for large 50 Hz vessels, require robust thermal insulation and want OEM support from Hyundai. Avoid if the installation demands a higher IP rating (e.g., IP55+), must operate on 60 Hz power systems without derating, or space/weight constraints preclude a large unit.

Use Cases: Typically installed as the main auxiliary generator supplying hotel load, cargo‑handling equipment, and emergency power on large ocean‑going vessels; also used in dual‑generator configurations for redundancy on cruise ships and offshore support vessels.

Datasheet

HFC 800kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

800 kVA rating provides ample power for medium to large vessel hotel loads and emergency supply.
Class H insulation permits operation at elevated temperatures, enhancing durability in hot engine rooms.
Four‑pole construction yields stable 60 Hz output with reduced vibration compared with lower‑pole designs.
IP23 enclosure offers splash protection while allowing easy access for routine maintenance.
Hyundai Marine’s established reputation for robust marine power equipment.

Weaknesses

IP23 is only splash‑proof; the unit may require additional shielding in harsh, wet deck environments.
Fixed 60 Hz frequency limits use on vessels standardized to 50 Hz without a frequency converter.
No integrated acoustic enclosure; noise mitigation must be provided externally.
Physical size and weight typical of an 800 kVA alternator can constrain installation space on smaller ships.

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if: you need a reliable 800 kVA auxiliary generator for a vessel that operates on 60 Hz and can accommodate an IP23‑rated unit; you value high temperature tolerance (Class H) and proven Hyundai reliability. Avoid if: the installation requires higher ingress protection (e.g., IP55), strict 50 Hz operation, or built‑in noise reduction.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel services, cargo handling equipment, and emergency power on medium‑to‑large commercial vessels; also used in standby configurations for redundancy.

Datasheet

HFC 800kVA 690V 50Hz unverified

· diesel‑driven synchronous generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (800 kVA) suitable for large hotel loads
Robust 4‑pole design provides stable voltage and frequency at 50 Hz
Class‑H insulation allows operation in high ambient temperature zones
Compact IP23 enclosure fits typical engine room layouts
Widely supported by Hyundai service network worldwide

Weaknesses

Relatively heavy for its power rating, impacting weight budgeting
Standard diesel fuel only – no dual‑fuel or LNG option
Noise and vibration levels higher than newer low‑speed alternatives
Limited redundancy if a single unit is used as the sole main generator

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑output auxiliary generator with strong Hyundai after‑sales support and can accommodate its weight and diesel‑only fuel system. Avoid if: the vessel requires dual‑fuel capability, ultra‑low noise operation, or multiple redundant generators for critical power.

Use Cases: Commonly installed as the main auxiliary generator on large merchant vessels to supply hotel services, cargo handling equipment, and emergency power; also used in standby/emergency configurations where a reliable single source is acceptable.

Datasheet

HFC 800kVA 690V 60Hz unverified

· high-speed diesel generator set

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and high power density for its rating
Integrated digital control system with remote monitoring capability
Proven reliability on a wide range of commercial vessels
Standard IEC‑60034/ISO‑8528 compliance simplifies certification

Weaknesses

IP23 enclosure offers limited protection against spray and dust; extra shielding may be required in harsh environments
Fuel consumption rises sharply at low load, reducing efficiency for intermittent operation
Noise level higher than some low‑speed or hybrid alternatives
Spare‑parts logistics depend on Hyundai service network, which can be less widespread in certain regions

Typical Vessels: Container shipGeneral cargo vesselCruise liner (hotel load)Offshore supply vesselLNG carrier (auxiliary power)

Certifications: IEC 60034ISO 8528DNV GL approvalABS classification

Decision Guide: Choose if you need a compact, high‑output auxiliary generator with proven marine service support and standard IEC/ISO certification. Avoid if the installation requires higher ingress protection (e.g., IP55), ultra‑low noise operation, or if fuel efficiency at part load is a primary concern.

Use Cases: Typically installed as main auxiliary power on large commercial vessels to supply hotel services, cargo handling equipment, and emergency loads; also used on offshore platforms where space is limited but high power output is required.

Datasheet

HFP 800kVA 400V 50Hz unverified

· Four‑pole synchronous alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

800 kVA output matches the typical hotel‑load requirement of medium‑size vessels
IP23 enclosure offers basic protection against dust and water spray, suitable for most engine rooms
Insulation class H permits operation at higher temperatures, reducing cooling system load
Four‑pole design ensures stable 50 Hz frequency with low vibration
Hyundai Marine Gen reputation for durability and worldwide service support

Weaknesses

IP23 rating is not splash‑proof; additional sealing may be required in harsh environments
No built‑in sound attenuation – external muffling may be needed to meet noise regulations
Designed for 50 Hz only, limiting use on vessels that operate on 60 Hz systems
Higher insulation class can increase initial cost compared with lower‑class units

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryPassenger ferry

Decision Guide: Choose if you need a proven 800 kVA, 400 V auxiliary generator for 50 Hz vessels and value Hyundai's global support network. Avoid if the installation requires higher ingress protection (e.g., IP55), dual‑frequency capability, or an integrated acoustic enclosure.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, navigation equipment, and cargo handling systems on medium‑size commercial ships; also used as a standby/emergency generator where redundancy is required.

Datasheet

HFP 800kVA 400V 60Hz unverified

· diesel-driven synchronous marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 800 kVA in a compact footprint suitable for medium‑size vessels
Robust Class H insulation allows operation in high ambient temperature zones
Standard 400 V output matches most shipboard distribution systems, simplifying integration
Four‑pole design provides stable frequency at 60 Hz with low vibration
Hyundai’s global service network offers spare parts and technical support

Weaknesses

IP23 enclosure is only splash‑proof; not suitable for exposed deck installations without additional protection
Fixed 400 V rating may require step‑up transformers on vessels that standardise on higher voltages (e.g., 660 V)
Limited emission certification information publicly available – may need verification for IMO Tier III compliance
Weight and dimensions are not disclosed, requiring detailed layout checks before installation

Typical Vessels: Container shipProduct tankerBulk carrierOffshore supply vesselCruise liner (hotel load auxiliary)

Decision Guide: Choose if: you need a reliable 800 kVA auxiliary generator for vessels with limited engine‑room space, operating primarily at 400 V and value Hyundai’s after‑sales support. Avoid if: the installation environment requires higher ingress protection (IP55 or above), the ship uses a different voltage standard, or strict IMO Tier III emission compliance must be demonstrated without further verification.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on medium‑size merchant ships. It is also used in offshore support vessels where compact size and high temperature tolerance are critical.

Datasheet

HFP 800kVA 440V 50Hz unverified

· diesel‑driven marine generator set

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) in a compact IP23 enclosure suitable for limited engine room space
Class H insulation permits operation at elevated temperatures, enhancing reliability in hot climates
Four‑pole design provides standard 1500 rpm speed for 50 Hz systems, simplifying integration with existing shipboard electrical infrastructure
Hyundai brand reputation for durability and extensive after‑sales support worldwide
Integrated control panel with automatic voltage regulation for stable power quality

Weaknesses

IP23 rating offers only splash protection; not suitable for highly dusty or corrosive environments without additional shielding
May lack the latest emission controls (e.g., SCR, DPF) required for IMO Tier III compliance on some routes
Compact layout can restrict easy access to internal components during routine maintenance
Fuel consumption higher than newer low‑speed gensets with common‑rail injection technology
Limited modularity; upgrades or retrofits may require significant redesign

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: ABSDNV GL

Decision Guide: Choose if you need a proven 800 kVA auxiliary power source in a space‑constrained engine room, value Hyundai’s global support network, and operate in environments where splash protection is sufficient. Avoid if your vessel must meet strict IMO Tier III emission limits, requires dust‑tight or explosion‑proof enclosures, or if you prioritize the lowest possible fuel consumption.

Use Cases: Typically installed as a main auxiliary generator on medium to large commercial vessels, providing shipboard power for propulsion auxiliaries, hotel loads, and emergency supply. Also used in shore‑based marine terminals where reliable high‑capacity diesel generation is required.

Datasheet

HFP 800kVA 440V 60Hz unverified

· high-speed synchronous generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint and high power density suitable for space‑constrained engine rooms
Class H insulation allows operation in high‑temperature environments
Four‑pole design delivers 1800 rpm synchronous speed, matching common marine diesel engines
IP23 enclosure is adequate for protected indoor installation with limited splash exposure
Standard 440 V/60 Hz output matches US and many Asian vessel electrical standards

Weaknesses

IP23 rating provides only minimal protection against water ingress; not ideal for exposed or harsh marine environments without additional shielding
High‑speed operation can lead to increased bearing wear and may require more frequent maintenance than low‑speed generators
Limited to 60 Hz systems, making it unsuitable for vessels standardized on 50 Hz grids
Acoustic noise level is higher than that of purpose‑built low‑noise generators
No integrated sound‑attenuation enclosure; additional mitigation may be needed for passenger ships

Typical Vessels: Container shipCruise liner (US‑flagged)Offshore supply vesselLNG carrier (U.S. market)Tanker (U.S. flag)

Decision Guide: Choose if: you need a compact 800 kVA auxiliary generator for a 60 Hz system, have limited engine‑room space, and operate in an environment where IP23 protection is sufficient. Avoid if: the vessel runs on a 50 Hz grid, requires higher ingress protection (IP55+), or has strict noise‑control requirements.

Use Cases: Typically installed as the main auxiliary generator on US‑flagged container ships, cruise vessels and offshore support ships where space is at a premium and the electrical system follows the 440 V/60 Hz standard. Also used in emergency power sets for vessels that need rapid start‑up and high thermal capability.

Datasheet

HFP 800kVA 690V 50Hz unverified

· synchronous alternator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation at elevated temperatures without derating.
Four‑pole construction provides stable 50 Hz output at typical engine speeds (1500 rpm).
Compact indoor‑rated IP23 enclosure fits standard engine‑room spaces.
800 kVA rating matches the power needs of medium‑size vessels and auxiliary loads.

Weaknesses

IP23 protection is limited to splash water; not suitable for exposed or wet‑deck installations.
No built‑in redundancy; a single unit failure impacts ship’s electrical supply.
Requires regular maintenance of brushes/rotor (if brushed) – typical for many marine alternators.

Typical Vessels: ContainerBulk CarrierGeneral CargoRo‑RoOffshore Support Vessel

Decision Guide: Choose if: you need a reliable 800 kVA generator for indoor engine‑room use on medium‑size commercial vessels and can accommodate standard maintenance cycles. Avoid if: the installation requires higher ingress protection (IP≥44) or you demand built‑in redundancy for critical loads.

Use Cases: Commonly installed as the main auxiliary generator on container ships, bulk carriers and offshore support vessels to supply shipboard electricity, hotel load, and emergency power when shore power is unavailable.

Datasheet

HFP 800kVA 690V 60Hz unverified

· diesel‑driven synchronous marine generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) in a relatively compact footprint for main‑engine rooms
Robust 4‑pole design provides stable voltage and frequency under variable loads
IP23 enclosure offers protection against splashing water while allowing easy access for maintenance
Insulation class H allows operation at elevated temperatures, extending service life in hot climates
Standard integration with Hyundai’s control & monitoring system simplifies installation and remote diagnostics

Weaknesses

Only available in 60 Hz; not suitable for vessels requiring 50 Hz power without a frequency converter
IP23 rating does not protect against dust ingress, limiting use in very harsh environments
Physical size and weight are significant compared with newer low‑speed or hybrid generator sets
Noise level can be higher than modern oil‑free or variable‑speed alternatives
Requires conventional diesel fuel infrastructure; not directly compatible with LNG or dual‑fuel setups

Typical Vessels: Container shipsCruise linersOffshore supply vessels (OSV)Bulk carriersLNG carriers (as auxiliary power)

Certifications: DNV GLABS

Decision Guide: Choose if: you need a proven, high‑output 800 kVA generator for 60 Hz shipboard service and prefer a conventional diesel‑driven unit with established class approvals. Avoid if: the vessel operates on 50 Hz grids, requires ultra‑low noise or weight, or is being equipped with dual‑fuel or hybrid power solutions.

Use Cases: The HFP 800 kVA set is typically installed as a main auxiliary generator on large commercial vessels where continuous high‑capacity electricity is required for propulsion support, hotel loads, cargo handling equipment, and emergency power. It is also used on offshore platforms and cruise ships to supply stable power to navigation, communication, and passenger amenities.

Datasheet

HFP 1000kVA 400V 50Hz unverified

· high-speed diesel generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1000 kVA in a relatively small footprint suitable for space‑constrained ships.
Four‑pole synchronous design delivers stable frequency and good voltage regulation.
Insulation class H permits operation at elevated temperatures, enhancing reliability in hot climates.
IP23 enclosure offers splash protection while allowing easy access for routine maintenance.
Integrated control panel with built‑in diagnostics simplifies monitoring and reduces crew workload.

Weaknesses

Enclosure is only IP23; not dust‑tight or fully weather‑proof, limiting use in harsh offshore environments.
Designed for 400 V/50 Hz systems – not directly compatible with vessels requiring 60 Hz or higher voltage distribution.
High‑speed diesel engines generally have higher specific fuel consumption than medium‑speed equivalents of the same rating.
Noise and vibration levels are higher than low‑speed generators, potentially requiring additional acoustic mitigation.
Maintenance intervals demand skilled technicians familiar with Hyundai’s proprietary control electronics.

Typical Vessels: Container ships (up to ~10 000 DWT)General cargo vesselsBulk carriersOffshore supply vesselsFerries and Ro‑Ro ships

Decision Guide: Choose if you need a compact, high‑power auxiliary generator for a vessel with standard 400 V/50 Hz distribution and limited engine room space. Avoid if the ship operates on 60 Hz systems, requires higher environmental emission standards without additional after‑treatment, or needs an enclosure rated above IP23 for severe offshore conditions.

Use Cases: Provides primary propulsion auxiliary power, emergency standby generation, and supports cargo handling equipment, HVAC, and hotel services on medium‑size commercial vessels. Frequently installed as the main ship service generator in new builds where space efficiency is a priority.

Datasheet

HFP 1000kVA 400V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) suitable for large vessel auxiliaries
Robust 4‑pole design provides stable 60 Hz frequency under varying loads
Insulation class H allows operation in high ambient temperature zones
Compact IP23 enclosure saves valuable engine‑room space
Hyundai Marine reputation for durability and long service intervals

Weaknesses

IP23 rating offers limited protection against water ingress; additional shielding may be required in harsh marine environments
Designed for 400 V 60 Hz only – not directly compatible with vessels standardized on 50 Hz systems
Physical size and weight are substantial, potentially restricting installation in space‑constrained ships
Fuel consumption is higher than newer low‑speed or hybrid generator sets
Emission compliance (e.g., IMO Tier III) depends on the specific engine model and may require after‑treatment upgrades

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: the vessel requires a reliable 1000 kVA auxiliary source at 400 V/60 Hz, has sufficient space for an IP23‑rated unit, and values Hyundai’s proven service record. Avoid if: the ship operates on a 50 Hz electrical system, needs higher ingress protection (e.g., IP44 or above), or must meet strict low‑emission Tier III standards without additional retrofits.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels to supply hotel loads, cargo handling equipment, and emergency power. Also used as a standby generator for critical systems on cruise ships and offshore support platforms where high reliability is essential.

Datasheet

HFP 1000kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (1000 kVA) suitable for large hotel and propulsion loads
H‑class insulation permits operation at elevated temperatures
Four‑pole design provides stable 50 Hz output with low vibration
IP23 enclosure offers splash protection for typical marine environments
Hyundai Marine’s established service network ensures spare parts availability

Weaknesses

IP23 rating is not dust‑tight; additional sealing may be required in harsh conditions
Large physical footprint and weight can limit installation space on smaller vessels
Single‑frequency (50 Hz) only – not suitable for ships requiring dual‑frequency capability
Higher initial capital cost compared with lower‑rated generators
Requires a dedicated cooling system; integration complexity may be higher

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a robust 1000 kVA auxiliary source for a large vessel with ample engine‑room space and prefer an OEM with proven after‑sales support. Avoid if: the installation area is constrained, dual‑frequency power is required, or budget constraints favor smaller units.

Use Cases: Commonly installed as the main hotel‑load generator on ultra‑large tankers, container ships, and cruise vessels, providing continuous power for cargo handling equipment, accommodation services, and emergency backup.

Datasheet

HFP 1000kVA 440V 60Hz unverified

· diesel-driven alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) suitable for large vessel hotel loads
Standard 440 V/60 Hz matches US and many international specifications
Class H insulation tolerates elevated operating temperatures
4‑pole design runs at 1800 rpm, compatible with common medium‑speed diesel engines
Hyundai Marine brand reputation for reliability and service support

Weaknesses

IP23 enclosure provides only splash protection; not ideal for harsh corrosive environments without extra shielding
Optimised for 60 Hz operation – unsuitable for vessels requiring 50 Hz power
Large physical size can limit installation in space‑constrained engine rooms
Fuel consumption rises sharply when operated at low load factors
Single‑unit design may require parallel sets for critical redundancy

Typical Vessels: Container ShipCruise ShipLNG CarrierOffshore Supply VesselProduct Tanker

Certifications: ABS

Decision Guide: Choose if the vessel needs a robust 1 MVA hotel power source, operates in a 60 Hz market and can accommodate an IP23‑rated generator with adequate ventilation. Avoid if the ship runs on 50 Hz systems, operates in highly corrosive or wet environments without additional protection, or has severe space/weight constraints.

Use Cases: Main propulsion‑auxiliary generator on large container and cruise ships; primary hotel power plant for LNG carriers and offshore supply vessels; standby generation for critical loads on tankers where high reliability is required.

Datasheet

HFP 1000kVA 690V 50Hz unverified

· diesel-driven marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) suitable for demanding hotel and cargo loads
Insulation class H provides good thermal tolerance and reliability under continuous operation
Four‑pole design yields standard 1500 rpm speed at 50 Hz, compatible with common marine gearboxes
Hyundai Marine Gen reputation for robust engineering and global service network

Weaknesses

IP23 enclosure limits use to protected indoor spaces; not suitable for exposed deck mounting
Large physical size and weight typical of high‑capacity generators may require substantial installation space
Standard diesel engine emissions may need additional after‑treatment to meet stricter IMO Tier III zones

Typical Vessels: Container shipCruise linerBulk carrierOffshore support vesselLNG carrier (auxiliary power)

Decision Guide: Choose if: you need a proven, high‑capacity auxiliary generator for large vessels and have protected installation space. Avoid if: the installation requires a weather‑proof (IP55+) enclosure or you must meet Tier III emission limits without extra after‑treatment.

Use Cases: Commonly installed in engine rooms of large merchant ships to supply hotel services, cargo handling equipment, navigation systems, and emergency power; also used on offshore platforms where reliable continuous power is critical.

Datasheet

HFP 1000kVA 690V 60Hz unverified

· diesel-driven synchronous alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1 MVA) suitable for large vessel hotel loads
H‑class insulation permits operation at elevated temperatures
Four‑pole construction provides stable frequency and lower vibration
Compact footprint relative to other 1000 kVA units, easing installation on deck
Hyundai’s reputation for durability and long service intervals

Weaknesses

Large physical size and weight may limit placement in space‑constrained vessels
IP23 rating offers only limited protection against water ingress compared with higher IP codes
Designed for 60 Hz operation; not directly compatible with regions standardising on 50 Hz
Noise and exhaust emissions typical of high‑output diesel generators require mitigation measures
Requires a dedicated diesel engine coupling, adding to maintenance complexity

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary

Decision Guide: Choose if you need a robust 1 MVA auxiliary power source at 690 V 60 Hz and have sufficient deck space for a large generator. Avoid if your vessel operates on a 50 Hz grid, requires higher ingress protection (IP>23), or has severe weight/space constraints.

Use Cases: Main‑engine driven emergency generator, hotel‑load power plant on large commercial vessels, backup generation for critical navigation and cargo handling systems, and shore‑power conversion units where 690 V 60 Hz is standard.

Datasheet

HFP 1250kVA 400V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (1250 kVA) suitable for large vessel power demands
Robust insulation class H allows operation at elevated temperatures
Standard 4‑pole design provides stable frequency and low harmonic distortion
IP23 enclosure is compact for deck or engine‑room installation
Hyundai Marine’s global service network simplifies maintenance and spare parts

Weaknesses

IP23 rating offers limited protection against water ingress; additional shielding may be required in harsh environments
Physical size and weight are substantial compared with newer low‑speed gensets
Fuel consumption is higher than modern Tier III compliant engines without after‑treatment
Single 50 Hz output only – not suitable where dual frequency (60 Hz) is needed
Cooling system requires dedicated seawater pump and heat exchangers, adding complexity

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrierNaval auxiliary

Decision Guide: Choose if you need a proven, high‑power generator for 400 V/50 Hz systems on large commercial vessels and have space for a standard IP23 enclosure. Avoid if the installation demands higher ingress protection (IP55+), dual‑frequency capability, or the lowest possible fuel consumption and emissions without additional after‑treatment.

Use Cases: Main propulsion generator sets on large merchant ships; emergency power supply for critical navigation and safety systems; auxiliary power for offshore platforms and cruise ship hotel loads.

Datasheet

HFP 1250kVA 400V 60Hz unverified

· air-cooled synchronous generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1.25 MVA) in a compact footprint for its class
Insulation class H provides excellent thermal endurance and reliability
4‑pole design ensures stable frequency and low vibration at 60 Hz
IP23 enclosure is dust‑protected and suitable for typical engine‑room environments
Hyundai Marine’s global service network simplifies spare‑parts logistics

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for very wet or spray‑prone locations
Designed for 60 Hz only, limiting use in regions where 50 Hz is required without a frequency converter
Physical size and weight may restrict installation on vessels with tight engine‑room space constraints
Requires regular brush and bearing maintenance typical of brushed synchronous machines

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselNaval auxiliary ship

Decision Guide: Choose if you need a reliable 1.25 MVA, 400 V, 60 Hz generator with strong thermal performance and Hyundai’s after‑sales support for large commercial vessels operating in 60 Hz regions. Avoid if the installation requires higher ingress protection (IP44 or above), must operate on 50 Hz power systems, or space constraints preclude a unit of this size.

Use Cases: Typically installed as the main auxiliary generator on large tankers and container ships to supply shipboard electrical loads, propulsion auxiliaries, and emergency power. Also used on cruise vessels for hotel services and on offshore support ships where high continuous power is required.

Datasheet

HFP 1250kVA 440V 50Hz unverified

· Four‑pole marine alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1250 kVA suitable for demanding shipboard loads
Four‑pole design ensures stable 50 Hz frequency under variable load conditions
Insulation class H permits operation in high ambient temperatures up to about 180 °C
IP23 enclosure provides splash protection and limited dust ingress, adequate for typical engine rooms
Hyundai Marine Gen reputation for robust construction and straightforward maintenance

Weaknesses

IP23 rating does not protect against heavy dust or corrosive spray; higher IP ratings may be required in harsh environments
Fixed 50 Hz output limits use on vessels that operate on 60 Hz power systems without converters
Physical size and weight of a 1250 kVA unit demand considerable engine‑room space
Lacks some modern electronic control features such as integrated remote monitoring or fuel‑optimised governors found in newer gensets
Potentially higher acoustic noise compared with low‑speed, high‑efficiency generators

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a proven high‑power generator for large vessels operating on 50 Hz systems and have sufficient engine‑room space; you value robust construction and class‑H insulation for hot climates. Avoid if: the installation requires higher ingress protection (IP≥44), operation on 60 Hz grids, or you prioritize compact size and advanced digital control features.

Use Cases: Typically installed as a main propulsion generator on VLCCs and large container ships, or as an auxiliary power source on cruise liners and offshore supply vessels where high electrical demand and reliability are critical. The unit is mounted in the engine room with direct coupling to diesel prime movers, supplying shipboard distribution networks for hotel services, cargo handling equipment, and navigation systems.

Datasheet

HFP 1250kVA 440V 60Hz unverified

· diesel-driven marine generator set

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) in a relatively compact footprint
Robust 4‑pole construction suited to 60 Hz operation, meeting US‑flag requirements
Insulation class H provides higher temperature tolerance and longer service life
Proven Hyundai engineering with an extensive global service network
IP23 enclosure offers protection against dust and limited water ingress

Weaknesses

Heavier than comparable gas‑turbine gensets, affecting weight budgeting
Standard emission levels may not meet IMO Tier III without additional after‑treatment
Single‑engine design limits redundancy unless paired with another set
Typical diesel maintenance intervals (oil changes, filter replacements) required
IP23 rating provides limited protection in harsh marine environments compared to higher IP ratings

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise ship

Certifications: ABSDNV GL

Decision Guide: Choose if you need a reliable 1250 kVA, 60 Hz auxiliary power source on a US‑flag or other 60 Hz vessel and value Hyundai’s service support. Avoid if the installation requires higher redundancy, stricter emission limits (IMO Tier III) without added after‑treatment, or a lighter‑weight solution.

Use Cases: Typically installed as main auxiliary generators on tankers, container vessels, and bulk carriers to supply hotel loads, cargo handling equipment, and emergency power. Also used on offshore support ships where compact size and proven reliability are critical.

Datasheet

HFP 1250kVA 690V 50Hz unverified

· four‑pole synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) suitable for large ship hotel loads
Robust Class H insulation allows operation at elevated temperatures
Four‑pole design provides stable 50 Hz frequency under varying load
Hyundai Marine’s global service network simplifies maintenance and spare parts logistics
Standard 690 V output matches common marine bus bar systems

Weaknesses

IP23 enclosure offers limited protection against dust and water ingress; not suitable for harsh offshore environments without additional shielding
Physical size and weight are substantial, requiring dedicated generator room space
Requires regular brush and bearing maintenance typical of brushed alternators
No integrated sound‑attenuation package; external mufflers may be needed to meet noise regulations
Emissions compliance depends on the coupled diesel engine; not a standalone low‑emission solution

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a proven, high‑capacity generator for large vessels with existing 690 V bus architecture and can accommodate the size and IP23 protection level. Avoid if space is at a premium, higher ingress protection (e.g., IP55) is required, or you require an integrated low‑noise or low‑emission package.

Use Cases: Commonly installed as main auxiliary power for propulsion support, hotel load generation on cruise ships, and emergency backup on bulk carriers where reliable high‑kVA output is critical.

Datasheet

HFP 1250kVA 690V 60Hz unverified

· high‑speed synchronous marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1250 kVA in a relatively compact footprint suitable for space‑constrained engine rooms.
H‑class insulation allows operation at elevated temperatures, improving reliability in hot climates.
Four‑pole design provides stable 60 Hz output with low harmonic distortion.
Standard 690 V three‑phase bus voltage matches most US‑flagged vessel electrical systems.
IP23 enclosure offers protection against large solid objects while keeping the unit lightweight.

Weaknesses

IP23 rating does not protect against fine dust or water ingress, limiting use in very harsh marine environments.
Designed for 60 Hz only – unsuitable for vessels that require dual‑frequency (50/60 Hz) capability.
High‑speed operation can result in higher fuel consumption compared with low‑speed generators of similar rating.
Cooling requirements are relatively demanding due to the high power output in a compact package.
Limited field data on long‑term wear for this specific model; maintenance intervals may be conservative.

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrier (US‑flagged)Ro‑Ro ferry

Decision Guide: Choose if: you need a compact 1250 kVA auxiliary power source for a US‑flagged or 60 Hz vessel, space is limited, and high ambient temperatures are expected. Avoid if: the installation requires dust‑tight (IP5X/IP6X) protection, dual‑frequency operation, or you prioritize fuel efficiency over size.

Use Cases: Typically installed as a main auxiliary generator on large merchant vessels to supply hotel loads, cargo handling equipment, and emergency power. Also used on offshore support ships where a high‑output, space‑saving generator is required for dynamic positioning and crew accommodations.

Datasheet

HFP 1600kVA 400V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 1600 kVA in a compact IP23 enclosure suitable for medium‑size vessels
Class H insulation allows operation up to 180 °C, enhancing durability under heavy load cycles
Four‑pole design provides good low‑speed torque and smooth output frequency stability
Standard marine rating (400 V/50 Hz) matches most existing shipboard distribution systems
Hyundai’s global service network simplifies spare‑parts logistics and maintenance

Weaknesses

IP23 enclosure is only splash‑proof; additional weather‑proofing needed for exposed deck installations
Fixed 400 V output may require step‑up/step‑down transformers on vessels with different voltage standards
Emission compliance depends on the installed engine and after‑treatment; not inherently Tier III ready
Limited to 4 poles – may be less suitable where very low speed (2‑pole) generators are preferred for high RPM engines

Typical Vessels: Container shipBulk carrierProduct tankerGeneral cargo vesselOffshore supply vessel

Decision Guide: Choose if: you need a reliable 1600 kVA auxiliary source on vessels that already use 400 V/50 Hz distribution, value Hyundai’s service support, and have space for an IP23‑rated unit. Avoid if: the installation requires higher voltage, stricter emission tiers without additional after‑treatment, or exposure to harsh weather where a fully sealed enclosure is mandatory.

Use Cases: Typically installed in the engine room as part of the ship's auxiliary power plant, supplying hotel loads, cargo refrigeration, navigation equipment, and providing emergency power when the main propulsion system is offline.

Datasheet

Hyundai Marine Gen HFP 1600kVA 400V 60Hz

HFP 1600kVA 400V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1.6 MVA) suitable for main hotel load and emergency power.
Insulation class H provides excellent thermal endurance and longer service life.
Four‑pole design gives stable 60 Hz operation with low vibration.
Standard 400 V bus voltage matches most US/Asian merchant ship electrical systems.

Weaknesses

IP23 enclosure offers only splash protection; additional shielding may be required in harsh weather.
Designed for 60 Hz only – not suitable for vessels operating on 50 Hz grids without a frequency converter.
Physical size and weight are typical of high‑power marine generators, impacting installation space.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 1.6 MVA auxiliary generator for 400 V/60 Hz systems on large merchant vessels and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP44) or operation on a 50 Hz power system.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on ocean‑going merchant ships; also used in standby/emergency configurations for compliance with SOLAS requirements.

Datasheet

Hyundai Marine Gen HFP 1600kVA 440V 50Hz

HFP 1600kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides excellent thermal tolerance and longer service life under heavy loads
Standard 4‑pole design gives stable 50 Hz output at 1 500 rpm, matching most marine diesel engines
IP23 enclosure protects against solid objects >12.5 mm and splash water, suitable for typical engine‑room environments
Hyundai Marine Gen reputation for reliability and widespread support in the maritime industry
Modular construction allows relatively easy on‑site maintenance and part replacement

Weaknesses

IP23 rating does not protect against direct water jets or immersion, limiting placement in very wet zones
Single‑frequency (50 Hz) design may require a separate set for vessels operating in 60 Hz regions
No built‑in dual‑voltage capability; external transformers required for 220/380 V applications
Physical size and weight typical of 1.6 MVA units can be significant for smaller vessels

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven 1.6 MVA auxiliary generator with high temperature tolerance for large commercial vessels operating on 50 Hz systems and can accommodate an IP23 enclosure. Avoid if: the installation requires higher ingress protection, dual‑frequency capability, or a more compact unit for smaller craft.

Use Cases: Commonly installed as part of the main auxiliary power plant on ocean-going cargo ships, providing both continuous service power and emergency backup; also used in shore‑power conversion sets where a stable 440 V/50 Hz supply is required.

Datasheet

HFP 1600kVA 440V 60Hz unverified

· four‑pole marine alternator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1600 kVA) suitable for medium‑size vessels' hotel load
Insulation class H provides robust thermal tolerance and longer life under heavy loading
Four‑pole construction ensures stable 60 Hz frequency with low vibration
IP23 enclosure offers basic protection against dust and water spray, simplifying deck mounting
Hyundai Marine’s global service network facilitates spare parts availability and field support

Weaknesses

IP23 rating may be inadequate for exposed wet‑deck areas without additional shielding
Physical footprint is larger than newer compact low‑speed generator sets
Emission compliance (IMO Tier II/III) depends on the coupled diesel engine; the alternator itself has no built‑in after‑treatment
Fuel efficiency is tied to the prime mover; older diesel engines paired with this alternator can be less economical than modern low‑speed units

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if you need a proven, high‑output auxiliary generator with strong thermal capability and worldwide Hyundai support, especially on vessels where deck space allows an IP23 enclosure. Avoid if the installation environment is exposed to heavy spray or if ultra‑low emissions (IMO Tier III) and minimal footprint are top priorities.

Use Cases: Commonly installed as a main auxiliary generator for hotel power, cargo handling equipment, and emergency power on medium‑size merchant ships; also used in offshore support vessels where reliable, high‑capacity electricity is required for dynamic positioning and accommodation services.

Datasheet

HFP 1600kVA 690V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1600 kVA) in a compact footprint suitable for engine rooms
Four‑pole design provides stable frequency and low harmonic distortion
Class H insulation allows operation at elevated temperatures typical of marine environments
IP23 enclosure protects against splashing water while allowing easy access for maintenance
Hyundai brand reputation for reliability and widespread service network

Weaknesses

Fuel consumption can be relatively high when operating far below rated load
Standard emission level may not meet IMO Tier III without additional after‑treatment
IP23 rating does not protect against dust ingress in very harsh environments
Noise and vibration levels are higher than newer low‑speed, low‑noise gensets
Physical size and weight may limit installation on vessels with tight space constraints

Typical Vessels: Container shipBulk carrierCruise linerOffshore support vesselLNG carrier

Decision Guide: Choose if: you need a proven, high‑output 690 V generator for main or emergency service on large vessels and value Hyundai's global support. Avoid if: strict IMO Tier III emission compliance or ultra‑low acoustic signature is mandatory without retrofitting, or space/weight limits are critical.

Use Cases: Commonly installed as a primary auxiliary generator supplying hotel loads on container ships, as an emergency power source on cruise liners, and as part of the power plant on offshore supply vessels where robust, high‑capacity electricity is required.

Datasheet

Hyundai Marine Gen HFP 1600kVA 690V 60Hz

HFP 1600kVA 690V 60Hz unverified

· synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1 600 kVA suitable for large hotel‑load demands
Standard 690 V three‑phase voltage aligns with most shipboard distribution systems
Class H insulation allows operation in high ambient temperature zones
IP23 enclosure provides basic protection against dust and spray, common on deck installations
Hyundai Marine’s global service network offers spare parts and field support

Weaknesses

IP23 rating may be insufficient for harsh corrosive environments without additional shielding
Fixed 60 Hz frequency limits use on vessels that operate primarily on 50 Hz power grids
Physical size and weight are typical of a 1 600 kVA unit, requiring substantial installation space
No built‑in redundancy; a second identical set is needed for full N+1 backup

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>10,000 TEU)Cruise linersOffshore supply vesselsNaval auxiliary ships

Decision Guide: Choose if: you need a proven 1 600 kVA generator at 690 V/60 Hz with Hyundai’s after‑sales support and can accommodate an IP23 enclosure. Avoid if: the installation requires higher ingress protection (e.g., IP55) or must operate on 50 Hz systems without frequency conversion.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on large commercial vessels where high continuous output is required.

Datasheet

HFP 2000kVA 400V 50Hz unverified

· synchronous marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MVA) suitable for main auxiliary plant on large ships
Robust IP23 enclosure provides splash protection in harsh marine environments
Insulation class H allows operation at elevated temperatures, enhancing reliability
Four‑pole design yields a moderate 1500 rpm speed, reducing mechanical stress and wear
Hyundai Marine Gen brand reputation for durability and long service life

Weaknesses

IP23 rating offers only splash protection; not suitable where dust or higher ingress protection is required
Fixed 400 V output may need step‑up transformers for vessels that operate at higher bus voltages
Physical size and weight are typical of large generators, limiting installation in space‑constrained ships
No documented compliance with newer IMO Tier III emission standards (engine side) or integrated control systems

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra Large Container Vessels (ULCV)Cruise ShipsOffshore Supply VesselsLNG carriers with high auxiliary power demand

Decision Guide: Choose if: you need a proven, high‑capacity 2 MVA generator for large vessels, value Hyundai's reliability record, and the ship’s electrical system is compatible with 400 V output. Avoid if: the installation requires higher ingress protection (IP54+), higher bus voltage without additional transformers, or strict compliance with latest emission‑control certifications integrated in the generator set.

Use Cases: Typically installed as part of the main auxiliary power plant on large ocean-going vessels to supply hotel loads, cargo handling equipment, and emergency power. It is also used on cruise ships for extensive hotel services and on offshore platforms where robust, high‑capacity generation is essential.

Datasheet

HFP 2000kVA 400V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (2 MVA) suitable for large ship hotel loads and cargo gear.
4‑pole design provides stable 60 Hz output with low vibration.
IP23 enclosure offers splash protection while keeping the unit compact.
Insulation class H allows operation at higher temperatures, improving reliability in hot climates.
Hyundai Marine Gen’s reputation for robust construction and long service intervals.

Weaknesses

IP23 is not dust‑tight; additional sealing may be required in harsh environments.
Limited to 60 Hz operation – not suitable where 50 Hz is mandated.
Enclosure rating may require extra ventilation or protective panels for extreme weather exposure.
No confirmed advanced emission control (e.g., SCR) – may need retro‑fit for strict NOx limits.

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑output 2 MVA auxiliary generator for 400 V/60 Hz systems on large merchant vessels and can accommodate an IP23 enclosure. Avoid if the vessel requires dust‑tight (IP55+) protection, 50 Hz operation, or built‑in advanced emissions treatment.

Use Cases: Typically installed as a main auxiliary power source to supply hotel loads, cargo handling equipment, and emergency power on large commercial ships; also used in standby/emergency generator sets for critical systems.

Datasheet

HFP 2000kVA 440V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High 2 MW output suitable for large hotel and propulsion‑auxiliary loads
Robust H‑class insulation provides good thermal endurance
Four‑pole design ensures stable frequency and lower vibration
Hyundai Marine reputation for long‑life components and worldwide service network
Compact IP23 enclosure fits typical engine‑room layouts

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for harsh spray or open‑deck exposure
Weight and footprint are substantial (typical of 2 MW gensets), requiring reinforced mounting
Single‑frequency (50 Hz) only – not ideal for vessels that need dual‑frequency capability
Noise level can be high without additional acoustic insulation
Cooling relies on forced air; may require extra ventilation in hot climates

Typical Vessels: Container shipCruise linerBulk carrierLNG/LPG carrierOffshore supply vesselNaval auxiliary

Decision Guide: Choose if you need a reliable 2 MW auxiliary power source on a large vessel operating at 50 Hz and can accommodate an IP23‑rated enclosure. Avoid if the installation demands higher ingress protection (e.g., IP55), dual‑frequency capability, or strict weight/space limits.

Use Cases: Provides main auxiliary power for hotel services, cargo handling equipment, and emergency generators on large commercial vessels; also used as a standby generator for propulsion support during engine outages.

Datasheet

HFP 2000kVA 440V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2000 kVA in a compact IP23 enclosure suitable for limited engine room space.
Robust insulation class H provides good thermal endurance and longer service intervals.
Four‑pole design gives stable voltage and frequency at 60 Hz, matching most US‑flagged vessel requirements.
Standard 440 V output aligns with common shipboard distribution systems, simplifying integration.
Hyundai’s proven after‑sales support network offers spare parts availability worldwide.

Weaknesses

High‑speed diesel engine may have higher fuel consumption compared with low‑speed gens of similar rating.
IP23 enclosure limits protection against water ingress; not ideal for harsh wet‑deck installations.
Noise and vibration levels are higher than those of larger, slower‑running generators.
Limited to 60 Hz operation – not directly compatible with vessels standardized on 50 Hz without a frequency converter.

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierOffshore supply vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a compact, high‑output auxiliary generator for vessels operating on 60 Hz systems and have adequate space for ventilation. Avoid if the installation demands higher water‑tightness (IP≥54), ultra‑low fuel consumption, or operation at 50 Hz.

Use Cases: Commonly installed as the main auxiliary power source on large merchant ships where a reliable 2 MVA supply is required for hotel loads, cargo handling equipment, and emergency systems. Also used on offshore support vessels that need robust, quick‑start generators for dynamic positioning support.

Datasheet

HFP 2000kVA 690V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 2 MW suitable for large vessels
Class H insulation allows operation in elevated ambient temperatures
Compact 4‑pole design reduces footprint compared with lower‑speed units
IP23 enclosure provides protection against splashing water and dust
Hyundai Marine’s long track record of reliability in marine applications

Weaknesses

Large single engine – no built‑in redundancy if used as sole source
Weight and size typical of 2 MW units may limit installation on space‑constrained ships
Fixed 50 Hz frequency limits use on vessels requiring 60 Hz power systems
IP23 rating may need additional shielding in harsh marine environments
Maintenance intervals comparable to other large diesel generators (e.g., oil change every ~500 hrs)

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>8,000 TEU)Bulk carrier (>150,000 dwt)Cruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven high‑power (2 MW) generator for main or auxiliary service on large vessels operating at 50 Hz and can accommodate its size and weight. Avoid if the ship requires built‑in redundancy from multiple smaller units, operates on a 60 Hz system, or has severe space constraints.

Use Cases: Typically installed as a primary or secondary generator plant on large tankers, container ships, bulk carriers and cruise vessels to supply propulsion auxiliaries, hotel loads, cargo handling equipment, and emergency power. Frequently paired with automatic load‑sharing controls for continuous operation during long voyages.

Datasheet

HFP 2000kVA 690V 60Hz unverified

· four‑pole diesel‑driven synchronous generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (2000 kVA) suitable for large vessel hotel loads and auxiliary propulsion systems
Insulation class H provides strong thermal endurance in harsh marine environments
Standard 690 V three‑phase voltage aligns with most shipboard distribution systems
Four‑pole design runs at 1500 rpm on a 60 Hz system, offering good balance of size and fuel efficiency for medium‑speed engines
Hyundai’s global service network simplifies spare‑parts logistics and maintenance

Weaknesses

IP23 rating offers limited protection against water ingress; additional splash guards may be required in very wet engine rooms
Fixed 60 Hz output limits use on vessels that operate on a 50 Hz power system without a frequency converter
Physical footprint and weight are substantial compared to newer low‑speed, compact gensets (exact dimensions not disclosed)
Emission levels meet older IMO Tier II standards; may be less competitive where stricter Tier III or EPA regulations apply

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a proven, high‑capacity 2 MW generator for 690 V/60 Hz shipboard distribution and have access to Hyundai support. Avoid if the installation requires higher ingress protection (IP≥44), must run on 50 Hz without converters, or must meet the latest Tier III emission limits.

Use Cases: Typically installed as a main auxiliary generator supplying hotel loads, cargo‑handling equipment, and emergency power on large commercial vessels; also used as a dedicated propulsion‑assist genset on offshore support ships.

Datasheet

Marathon Electric

MaraGlobe 100kVA 400V 50Hz unverified

· four-pole synchronous marine generator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 100 kVA rating suitable for medium‑size vessel auxiliaries
Insulation class H provides high thermal endurance and reliability
Four‑pole design yields stable 50 Hz output at standard 1500 rpm speed
IP23 enclosure offers protection against dust and limited water spray, reducing maintenance in typical shipboard environments

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; extra shielding may be required in harsh weather decks
Single‑voltage (400 V) limits flexibility for vessels that need dual‑voltage capability
No built‑in redundancy; a single unit must be paired with another generator for critical power continuity

Typical Vessels: General cargo shipOffshore supply vesselFerryMedium‑size yachtResearch vessel

Decision Guide: Choose if you need a reliable 100 kVA auxiliary source for vessels operating on a 400 V/50 Hz system, where space is limited and moderate environmental protection (IP23) is acceptable. Avoid if the installation requires dual‑voltage capability, higher ingress protection (e.g., IP44 or above), or built‑in redundancy for critical loads.

Use Cases: Typically installed as an auxiliary generator to supply shipboard hotel services, navigation equipment, and emergency power on medium‑size commercial and offshore vessels. Often paired with an automatic voltage regulator and integrated into the vessel's power management system for load sharing with other generators.

Datasheet

MaraGlobe 100kVA 400V 60Hz unverified

· diesel-driven alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact, marine‑grade design suitable for medium‑size ships
IP23 enclosure provides splash protection in typical engine room environments
Insulation class H tolerates higher operating temperatures, enhancing reliability
Four‑pole construction offers good voltage regulation at 60 Hz
Marathon’s reputation for robust field service and spare‑parts availability

Weaknesses

IP23 rating does not protect against dust or heavy water ingress; unsuitable for harsh offshore exposure without additional shielding
Fixed 400 V/60 Hz output may require transformers on vessels that operate on 440 V or 50 Hz systems
No integrated sound‑attenuation enclosure – may need external mufflers to meet noise limits
Weight and footprint are typical for a 100 kVA diesel set, which can be a limitation in space‑constrained installations

Typical Vessels: Container shipGeneral cargo vesselOffshore supply vesselFerryCoastal tanker

Decision Guide: Choose if you need a proven 100 kVA diesel generator for vessels operating on 400 V/60 Hz with moderate environmental exposure and value easy service support. Avoid if the installation requires higher ingress protection (IP65+), operation on 50 Hz systems, or strict onboard noise limits without additional mitigation.

Use Cases: Provides ship‑service power for hotel loads, cargo handling equipment, and navigation systems; also serves as an emergency standby generator to meet SOLAS requirements on medium‑size commercial vessels.

Datasheet

MaraGlobe 100kVA 440V 50Hz unverified

· four‑pole synchronous generator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact IP23 enclosure suitable for protected engine‑room installations
H‑class insulation provides high temperature tolerance and longer service life
Four‑pole design delivers stable 50 Hz output with low vibration
100 kVA rating matches the auxiliary power needs of many medium‑size vessels
Marathon Electric’s reputation for robust marine electrical equipment

Weaknesses

IP23 protection is not weather‑proof; unsuitable for outdoor or exposed locations
Fixed 440 V/50 Hz output may limit compatibility with ships that operate on 60 Hz systems
No publicly confirmed IMO Tier III emissions compliance, which could be required in emission control areas
Limited information on integrated sound‑attenuation features compared with newer low‑noise models

Typical Vessels: Coastal tankerOffshore supply vesselFerrySmall container shipCruise ship auxiliary power unit

Decision Guide: Choose if you need a reliable 100 kVA indoor generator with high‑temperature insulation for vessels that run on 50 Hz and have protected engine‑room spaces. Avoid if the installation is exposed to the elements, requires 60 Hz operation, or must meet strict IMO Tier III emission limits without additional after‑treatment.

Use Cases: Commonly installed as an auxiliary generator to supply hotel loads, navigation equipment, and emergency power on medium‑size commercial vessels operating in temperate regions. Also used as a standby unit for propulsion support on offshore service ships where space is limited and the engine room is climate‑controlled.

Datasheet

MaraGlobe 100kVA 440V 60Hz unverified

· 4-pole marine alternator

Power (kVA)

100

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size suitable for limited engine room space
High insulation class H allows operation in elevated temperature zones
Standard 440 V/60 Hz output matches most shipboard distribution systems
IP23 enclosure provides protection against splashing water and accidental contact
Four‑pole design delivers smoother voltage waveform and lower ripple

Weaknesses

Maximum output of 100 kVA may be insufficient for larger vessels or high‑power demand scenarios
IP23 rating does not protect against dust ingress or heavy spray, limiting placement options
No integrated emission control information; compliance must be verified separately
Single unit provides no built-in redundancy – a second set is required for critical loads
Limited documentation publicly available, requiring direct manufacturer confirmation for installation details

Typical Vessels: Coastal cargo vesselsSmall tankersResearch and survey shipsOffshore support craftYachts and luxury mega‑yachts

Decision Guide: Choose if: you need a compact, medium‑size auxiliary power source for vessels under 5 000 GT with modest electrical demand, and you can accommodate an IP23 enclosure. Avoid if: the ship requires higher than 100 kVA capacity, strict dust protection (IP54+), or built‑in redundancy without adding a second unit.

Use Cases: Typically installed as part of an auxiliary power plant on small to medium commercial vessels, providing electricity for lighting, navigation equipment, cargo pumps, and hotel services when the main propulsion engine is offline or during port stays.

Datasheet

MaraGlobe 100kVA 690V 50Hz unverified

· marine alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides excellent temperature tolerance and reliability in hot engine rooms.
Four‑pole construction delivers stable 50 Hz output suitable for most shipboard electrical systems.
IP23 enclosure is splash‑proof, allowing installation on deck or in ventilated compartments without full waterproofing.
Compact 100 kVA rating fits medium‑size vessels that need a balance between power and space.
Marathon Electric has a long reputation for robust marine electrical equipment.

Weaknesses

IP23 is not fully sealed; the unit is vulnerable to heavy spray or immersion, limiting placement in harsh wet zones.
The alternator is supplied without an integrated engine, requiring a separate prime‑mover and additional installation work.
Limited voltage (690 V) may necessitate step‑down transformers for vessels that standardise on 440 V or 415 V systems.
No publicly confirmed IMO D‑2, USCG Type Approval, or class society certification listed for this exact model.

Typical Vessels: Coastal cargo shipSupply vesselFerryWorkboatSmall offshore platform support vessel

Decision Guide: Choose if: you need a reliable 100 kVA alternator with high temperature tolerance and can provide your own diesel engine; installation area is protected from heavy spray. Avoid if: you require a fully integrated generator set, higher IP rating (e.g., IP55), or documented class‑society approval for emergency power.

Use Cases: Commonly deployed as auxiliary power generators for hotel loads, lighting, and cargo handling equipment on medium‑size vessels; also used in emergency standby configurations where the alternator is driven by an existing main engine gearbox.

Datasheet

MaraGlobe 100kVA 690V 60Hz unverified

· diesel generator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

100 kVA rating suitable for medium‑size vessel hotel loads
IP23 enclosure protects against water spray in deck installations
Class H insulation allows operation at high ambient temperatures
Four‑pole design provides stable 60 Hz output with low harmonic distortion
Marathon brand offers a global service network and proven reliability

Weaknesses

Fixed 690 V output limits flexibility for vessels requiring other voltage levels
IP23 rating does not protect against dust ingress in very harsh environments
Diesel‑driven units require fuel handling infrastructure and regular maintenance intervals
No built‑in redundancy; a second unit is needed for critical power continuity

Typical Vessels: Offshore supply vesselFerryCoastal tankerResearch vesselLarge yacht

Decision Guide: Choose if you need a compact, 100 kVA diesel generator with robust water‑spray protection for medium‑size vessels and have access to Marathon’s service network. Avoid if your vessel requires higher voltage levels, dust‑tight (IP6X) enclosures, or built‑in redundancy.

Use Cases: Commonly installed as an auxiliary power source on offshore support ships, ferries, and coastal tankers to supply hotel loads, cargo handling equipment, and emergency systems where space is limited but reliable power is essential.

Datasheet

MaraGlobe 150kVA 400V 50Hz unverified

· synchronous marine generator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Standard 400 V / 50 Hz output matches most ship electrical systems
Four‑pole construction provides stable frequency and smooth operation
Insulation class H allows reliable performance in high ambient temperatures
Compact IP23 enclosure suitable for typical engine room installations

Weaknesses

150 kVA rating may be insufficient for larger vessels or high hotel loads
IP23 protection is lower than higher‑rated enclosures (e.g., IP55), limiting use in very harsh, wet environments
No publicly confirmed IMO D‑2 or USCG type approval could restrict regulatory acceptance
Limited published performance data makes detailed efficiency comparison difficult

Typical Vessels: Offshore supply vesselFishing vesselCoastal tankerSmall cruise ship auxiliary systemContainer feeder

Decision Guide: Choose if you need a reliable 150 kVA auxiliary generator with standard voltage/frequency, high temperature tolerance and a compact footprint for small‑to‑medium vessels. Avoid if your vessel requires higher protection ratings (IP55+), larger power output, or documented IMO D‑2/USCG type approval.

Use Cases: Commonly deployed as an emergency generator, hotel‑load auxiliary source, or to power cargo handling equipment on board medium‑size commercial ships where space and temperature resilience are priorities.

Datasheet

MaraGlobe 150kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

150 kVA output suitable for medium‑size vessels' hotel load or emergency power
Four‑pole construction yields standard 1800 rpm speed at 60 Hz, simplifying coupling to common prime movers
Insulation class H offers high temperature tolerance and durability in harsh marine environments
Compact IP23 enclosure reduces installation space while protecting against solid objects >12 mm and water spray

Weaknesses

IP23 rating does not provide full protection against splashing or immersion; additional shielding may be required in wet locations
Limited to 60 Hz operation, which may be unsuitable for vessels standardized on 50 Hz systems
No built‑in sound attenuation; external mufflers may be needed to meet crew comfort standards

Typical Vessels: Offshore supply vesselFerrySmall tankerContainer feederResearch vessel

Decision Guide: Choose if: you need a reliable 150 kVA, 400 V/60 Hz generator for vessels that operate on 60 Hz systems and can accommodate an IP23 enclosure. Avoid if: the installation requires higher ingress protection (e.g., IP44 or above) or must run on 50 Hz power.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, lighting, and cargo handling equipment, or as an emergency standby unit on vessels where space is at a premium.

Datasheet

MaraGlobe 150kVA 440V 50Hz unverified

· synchronous marine alternator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact IP23 enclosure suitable for indoor engine rooms with limited space
Standard 440 V output matches most shipboard distribution systems in 50 Hz regions
Insulation class H allows operation at higher ambient temperatures typical of marine environments
Four‑pole design provides a robust 1500 rpm speed, simplifying coupling to diesel prime movers

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh wet‑deck installations requiring IP66 or higher
Limited to 50 Hz operation – unsuitable for vessels operating on 60 Hz power grids without frequency conversion
150 kVA may be undersized for larger cargo ships or vessels with high hotel loads
No publicly confirmed IMO D‑2, USCG Type Approval or other classification society certifications

Typical Vessels: Coastal cargo vesselFerryOffshore supply boatResearch / survey vesselTugboat

Decision Guide: Choose if: you need a reliable 150 kVA auxiliary generator for a medium‑size vessel operating in 50 Hz regions, with limited engine‑room space and standard 440 V distribution. Avoid if: the installation requires higher ingress protection (IP66+), operation on 60 Hz systems, or power ratings above 200 kVA.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, navigation equipment, cargo refrigeration, and emergency lighting on board. It is often coupled to a medium‑speed diesel engine and used in vessels where space constraints favour a compact, high‑temperature tolerant unit.

Datasheet

MaraGlobe 150kVA 440V 60Hz unverified

· synchronous marine alternator

Power (kVA)

150

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Standard 440 V/60 Hz output matches most US‑built vessel electrical systems
IP23 enclosure protects against dust and spray, suitable for sheltered engine rooms
Insulation class H allows operation at higher ambient temperatures
Four‑pole construction provides stable frequency at typical 1800 rpm prime‑mover speeds
Compact footprint makes it usable in vessels with limited generator space

Weaknesses

IP23 rating is not fully watertight; additional shielding may be required for exposed locations
150 kVA output limits use on larger ships that need higher auxiliary power
No integral sound‑attenuation package – external mufflers or enclosures are needed
Supplied as a generator/alternator only; a separate prime mover (engine) must be provided
Limited publicly available documentation can lengthen procurement lead time

Typical Vessels: Coastal tankersOffshore supply vesselsSmall cruise shipsFishing vesselsGeneral cargo ships up to 30,000 dwt

Decision Guide: Choose if you need a compact 150 kVA auxiliary power source that matches US‑standard voltage/frequency and you have space for a separate engine. Avoid if the vessel requires higher power, stricter ingress protection (e.g., IP65), or an all‑in‑one generator set with built‑in sound attenuation.

Use Cases: Typically installed in the main engine room to supply hotel loads, cargo handling equipment, and emergency backup power on medium‑sized commercial vessels operating in coastal or offshore environments.

Datasheet

MaraGlobe 150kVA 690V 50Hz unverified

· marine synchronous alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact, IP23 enclosure suitable for typical engine room installations
Class H insulation allows operation in high ambient temperatures
Four‑pole design provides stable 50 Hz output at 690 V three‑phase
150 kVA rating matches the auxiliary power needs of many small‑to‑medium vessels
Marathon Electric reputation for robust, low‑maintenance designs

Weaknesses

Maximum output limited to 150 kVA – may be undersized for larger ships or high hotel loads
IP23 protection is not dust‑tight; additional sealing may be required in harsh environments
No built‑in exhaust after‑treatment – emissions compliance depends on the prime mover
Limited published data; detailed performance curves and dimensions are not readily available

Typical Vessels: Offshore supply vesselCoastal cargo shipFerryFishing vesselYacht / luxury cruiser

Decision Guide: Choose if: you need a reliable mid‑size (≈150 kVA) generator for auxiliary or standby power on vessels with limited engine‑room space and standard 690 V three‑phase supply. Avoid if: the vessel requires higher power output, stricter dust protection (IP>23), or integrated low‑emission solutions that this model does not explicitly provide.

Use Cases: Typically installed as an auxiliary generator to run hotel services (lighting, HVAC, galley equipment) and as a standby source for emergency power on small to medium commercial vessels operating in coastal or offshore environments.

Datasheet

MaraGlobe 150kVA 690V 60Hz unverified

· high‑speed marine alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact high‑speed design (4‑pole) suitable for limited engine room space
Insulation class H allows operation at higher temperatures without derating
Standard 690 V output matches most shipboard distribution systems
IP23 enclosure provides protection against dust and spray in typical deck installations

Weaknesses

High‑speed operation can lead to shorter bearing life compared with low‑speed generators
IP23 rating is not fully watertight; unsuitable for harsh wet‑deck or immersion environments
150 kVA limit may be insufficient for larger vessels requiring >200 kW auxiliary power
Requires adequate ventilation and cooling due to higher operating temperatures

Typical Vessels: Offshore supply vesselCoastal cargo shipFerryPatrol boatTugYacht

Decision Guide: Choose if you need a compact, standard‑voltage generator around 150 kVA for vessels with limited engine‑room space and can accommodate an IP23 environment. Avoid if the installation demands higher power output, low‑speed durability, or full watertight protection.

Use Cases: Provides auxiliary power for lighting, HVAC, cargo handling equipment, and emergency standby supply on small to medium commercial ships; also used as a shore‑power conversion unit where shipboard voltage must match port infrastructure.

Datasheet

MaraGlobe 200kVA 400V 50Hz unverified

· synchronous marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

200 kVA output matches the auxiliary power needs of many medium‑size vessels
Standard 400 V/50 Hz three‑phase supply integrates easily with existing shipboard electrical systems
Class H insulation allows operation at higher temperatures, enhancing durability in harsh marine environments
Four‑pole design provides 1500 rpm at 50 Hz, matching common diesel engine speeds for direct coupling
IP23 enclosure offers protection against water spray while keeping the unit relatively compact

Weaknesses

Power rating may be insufficient for larger vessels or high‑hotel‑load ships
IP23 is only splash‑proof; it does not protect against dust or heavy exposure, limiting use in very harsh conditions
Model is specified for 50 Hz only, which can restrict applicability in US/Canadian fleets that require 60 Hz equipment
No publicly confirmed integrated automatic voltage regulator (AVR) – may need an external AVR for full load regulation
Limited published certification data; users may need to verify compliance with class society requirements

Typical Vessels: Coastal cargo shipOffshore supply vesselSmall tankerFerryFishing vessel

Decision Guide: Choose if: you need a reliable 200 kVA auxiliary generator for a 50 Hz fleet, value high temperature tolerance (Class H) and can accommodate an IP23 enclosure. Avoid if: the vessel requires higher power output, operates on 60 Hz systems, or demands a fully sealed (IP66/67) unit with documented class‑society approvals.

Use Cases: Typically installed as an auxiliary generator to supply hotel loads, navigation equipment and emergency power on medium‑size commercial vessels operating in temperate waters. It is also used on offshore support ships where compact size and robust thermal performance are priorities.

Datasheet

MaraGlobe 200kVA 400V 60Hz unverified

· marine diesel generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation tolerates elevated ambient temperatures
200 kVA rating meets auxiliary power needs of medium‑size vessels
Four‑pole design provides stable 60 Hz output
Compact IP23 enclosure saves installation space

Weaknesses

IP23 protection offers limited resistance to water and dust, unsuitable for harsh marine exposure
No publicly listed certifications may restrict class approvals on some flags
Enclosure rating may require additional shielding in wet areas

Typical Vessels: Coastal CargoOffshore Supply VesselFerryTug

Decision Guide: Choose if you need a mid‑range 200 kVA generator and can accommodate limited enclosure protection; avoid if the vessel requires higher ingress protection (e.g., IP55+) or specific class approvals that are not documented for this model.

Use Cases: Commonly installed as auxiliary power on offshore supply vessels, small tankers, coastal cargo ships, and other medium‑size craft to supply hotel loads and emergency power.

Datasheet

MaraGlobe 200kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

200 kVA output matches the common auxiliary load range of medium‑size vessels
IP23 enclosure provides basic protection against dust and spray, suitable for deck‑mounted installations
Insulation class H allows operation in high ambient temperature zones
Four‑pole design gives a stable 50 Hz frequency with low vibration

Weaknesses

IP23 rating may be insufficient for harsh marine spray or immersion areas without additional shielding
No documented dual‑frequency (60 Hz) capability, limiting use on vessels operating in mixed regions
Limited published information on built‑in control features such as automatic voltage regulation

Typical Vessels: Container shipBulk carrierTankerOffshore support vesselCruise liner (mid‑size)

Decision Guide: Choose if you need a standard 200 kVA, 440 V 50 Hz generator with basic splash protection and high temperature tolerance for medium‑sized vessels. Avoid if the installation requires higher ingress protection (e.g., IP66), dual‑frequency operation, or integrated advanced control packages that are not confirmed for this model.

Use Cases: Commonly installed as a main auxiliary power source or emergency generator on deck or in engine rooms of commercial ships where a reliable 200 kVA supply is required for lighting, cargo handling equipment, and hotel services.

Datasheet

MaraGlobe 200kVA 440V 60Hz unverified

· 4‑pole marine alternator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Provides 200 kVA of reliable auxiliary power in a single unit
Class H insulation tolerates high operating temperatures typical on ships
Compact IP23 splash‑proof enclosure saves valuable engine‑room space
Standard 440 V/60 Hz output matches US‑flag and many Asian vessel electrical systems
Marathon Electric has an established service network for marine generators

Weaknesses

IP23 rating offers only splash protection; not suitable for dusty or harsh offshore environments requiring IP65+
Fixed 60 Hz frequency limits use on vessels that operate on a 50 Hz grid without converters
Enclosure does not include built‑in sound attenuation, so additional muffling may be needed
Weight and dimensions are comparable to older designs; newer high‑efficiency units can be lighter
No integrated automatic voltage regulator is specified, requiring an external AVR for tight voltage control

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise ship (auxiliary power)

Decision Guide: Choose if: you need a proven 200 kVA auxiliary generator for 440 V/60 Hz systems, have moderate space constraints and operate in environments where splash protection is sufficient. Avoid if: the vessel requires higher ingress protection (IP65+), must run on 50 Hz, or demands an integrated sound‑proofed or fully automated control package.

Use Cases: Typically installed as a main auxiliary generator in engine rooms of US‑flagged tankers and container vessels, providing power for hotel services, cargo handling equipment, and emergency loads. Also used on offshore supply ships where a compact, high‑temperature tolerant alternator is advantageous.

Datasheet

MaraGlobe 200kVA 690V 50Hz unverified

· 4‑pole synchronous generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

200 kVA output matches the standard 690 V three‑phase distribution used on many merchant vessels
Class H insulation provides good thermal tolerance for continuous marine operation
IP23 enclosure offers basic protection against dust and spray, suitable for indoor engine‑room installation
Four‑pole design yields a stable 50 Hz output with reduced vibration compared to higher‑speed machines

Weaknesses

IP23 rating is not fully watertight; additional shielding may be required in harsh or wet environments
No publicly confirmed IMO D‑2, USCG or other type‑approval certifications listed for this exact model
Limited information on remote monitoring or integrated control interfaces
Physical dimensions and weight are not disclosed, making layout planning more complex

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 200 kVA source for a 690 V, 50 Hz European‑type power system and can accommodate an IP23 indoor installation. Avoid if: your project requires a higher ingress protection rating, documented IMO D‑2 or USCG type approval, or built‑in remote diagnostics.

Use Cases: Commonly installed as the main service generator on medium‑size merchant vessels, or as an auxiliary/emergency power source for cargo handling equipment and hotel loads where a compact, four‑pole synchronous unit is preferred.

Datasheet

MaraGlobe 200kVA 690V 60Hz unverified

· marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides excellent temperature tolerance for harsh marine environments
Four‑pole construction yields smoother voltage output and lower ripple compared with two‑pole units
Compact, deck‑mounted IP23 enclosure simplifies installation on existing machinery spaces
200 kVA rating fits well as a primary auxiliary source on medium‑size vessels without excessive oversizing

Weaknesses

IP23 protection only guards against splash; not suitable for dusty or heavily spray‑exposed locations without additional shielding
Designed exclusively for 60 Hz operation, limiting use in regions where 50 Hz is standard
No built‑in sound attenuation; may require external mufflers to meet crew comfort standards
Single‑unit design offers no inherent redundancy; a failure would require standby power arrangements

Typical Vessels: Offshore supply vesselCruise ship (hotel load auxiliary)Container feederRo‑Ro ferryMedium‑size bulk carrier

Decision Guide: Choose if: you need a reliable 200 kVA, 690 V 60 Hz generator with robust temperature rating for a US‑registered vessel and have space for a deck‑mounted unit. Avoid if: the installation requires higher ingress protection (IP44+), must operate on 50 Hz systems, or you demand built‑in redundancy/noise control.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel services, cargo handling equipment and emergency power on vessels operating in US waters. It is also used on offshore support ships where a compact, high‑temperature tolerant alternator is preferred for limited machinery space.

Datasheet

MaraGlobe 250kVA 400V 50Hz unverified

· 4-pole synchronous marine generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides strong thermal tolerance and reliability under continuous load
Compact IP23 enclosure suitable for typical engine‑room installations where only spray protection is required
250 kVA rating matches the auxiliary power needs of many medium‑size vessels without oversizing
Marathon Electric’s reputation for robust, low‑maintenance diesel‑driven generator sets
Four‑pole design gives stable 50 Hz output with reduced vibration

Weaknesses

IP23 protection does not guard against dust or heavy water ingress; unsuitable for harsh offshore exposure without additional shielding
Fixed 400 V/50 Hz output may require transformers or converters on vessels operating on 60 Hz systems
No integrated automatic voltage regulator (AVR) is specified, potentially requiring an external control unit
Weight and footprint are not disclosed; installation may be challenging in very tight spaces
Limited to a single power rating – no modular scaling for higher redundancy

Typical Vessels: General cargo shipContainer feederMedium‑size tankerOffshore supply vesselFerry

Decision Guide: Choose if: you need a reliable 250 kVA auxiliary generator for 400 V/50 Hz systems, have moderate environmental exposure (spray only) and value Marathon’s proven durability. Avoid if: the installation requires higher ingress protection (IP55+), operation on 60 Hz networks without conversion equipment, or built‑in advanced control/monitoring features.

Use Cases: Typically installed as the main auxiliary generator on medium‑size commercial vessels to supply power for cargo handling gear, HVAC, navigation electronics and hotel services, or as a standby unit in case of main engine failure.

Datasheet

MaraGlobe 250kVA 400V 60Hz unverified

· brushless marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact IP23 enclosure suitable for deck or engine‑room installation
Insulation class H allows operation at elevated temperatures (up to ~180 °C)
Four‑pole design delivers stable 60 Hz output with reduced vibration
Brushless construction minimizes wear and maintenance intervals

Weaknesses

IP23 rating provides limited protection against water ingress; not ideal for exposed wet locations
250 kVA may be insufficient for larger vessels that require >500 kVA auxiliary power
Noise level can be higher than low‑speed, large‑bore generators used on some passenger ships

Typical Vessels: Offshore supply vesselProduct tanker (up to ~30,000 DWT)Container feederCoastal cargo shipFerry

Decision Guide: Choose if you need a compact, brushless alternator delivering up to 250 kVA for medium‑size commercial vessels where an IP23 enclosure and high‑temperature insulation are acceptable. Avoid if the installation requires higher ingress protection (e.g., IP55), greater power output, or ultra‑low noise levels.

Use Cases: Typically installed as the main ship service alternator on medium‑sized vessels, or as part of an emergency generator set paired with a diesel engine to supply critical loads such as lighting, navigation equipment, and cargo handling systems.

Datasheet

MaraGlobe 250kVA 440V 50Hz unverified

· four-pole synchronous marine alternator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

250 kVA output matches the auxiliary power demand of medium‑size vessels
Four‑pole construction provides good voltage regulation and low frequency ripple
Class H insulation tolerates higher operating temperatures, reducing cooling load
IP23 enclosure protects against dust and water spray typical in engine rooms
Relatively compact footprint compared with larger 500 kVA units

Weaknesses

IP23 rating is not fully sealed; heavy splashing or immersion could be problematic
Fixed 50 Hz output may require conversion for vessels standardized on 60 Hz
No explicit built‑in automatic voltage regulator noted, possibly requiring external AVR
440 V terminal voltage limits use on ships that operate at higher distribution voltages (e.g., 690 V)
Lack of publicly documented certifications could delay class approvals

Typical Vessels: Offshore Supply VesselCoastal Cargo ShipFerryResearch VesselYacht

Decision Guide: Choose if you need a moderate‑size auxiliary generator for vessels with limited engine‑room space, operating primarily at 50 Hz and where an IP23 enclosure is sufficient. Avoid if the vessel requires higher voltage distribution (e.g., 690 V), operates in harsh wet environments demanding a higher IP rating, or must meet specific class society approvals that are not yet documented for this model.

Use Cases: Typically installed as the main auxiliary generator on mid‑size commercial vessels to supply hotel loads, navigation equipment, and emergency power. Also used on offshore support ships and larger yachts where space constraints favor a compact unit with robust temperature tolerance.

Datasheet

MaraGlobe 250kVA 440V 60Hz unverified

· 4‑pole synchronous marine alternator

Power (kVA)

250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

250 kVA output matches the auxiliary load profile of many medium‑size ships
IP23 enclosure protects against splashing water common in engine rooms
Insulation class H permits operation at elevated temperatures typical of marine environments
Four‑pole design provides stable 60 Hz frequency with low vibration
Compact footprint suitable for limited engine‑room space

Weaknesses

Only rated for 60 Hz – not directly compatible with regions or vessels that require 50 Hz power
IP23 offers only splash protection; no dust‑tight or immersion rating
No integrated automatic voltage regulator (AVR) is specified, requiring separate control equipment
Weight and mounting dimensions are not published, potentially affecting installation planning
Maintenance schedule and brush/brushless configuration are not documented

Typical Vessels: Coastal cargo vesselsOffshore supply boatsCrew transfer ferriesMedium‑size yachtsPatrol and research vessels

Decision Guide: Choose if: you need a reliable 250 kVA auxiliary generator for a 60 Hz vessel, have engine‑room conditions limited to splash exposure, and can accommodate separate AVR/control gear. Avoid if: the ship operates on a 50 Hz grid, requires higher ingress protection (IP54 or above), or demands an all‑in‑one generator set with built‑in control electronics.

Use Cases: Typically installed as the main auxiliary generator on vessels that require steady 60 Hz power for lighting, HVAC, cargo handling equipment and emergency systems. It is also used in retrofit projects where space constraints favor a compact, four‑pole alternator with proven marine durability.

Datasheet

MaraGlobe 250kVA 690V 50Hz unverified

· four-pole synchronous marine generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

250 kVA rating matches the auxiliary load requirements of many medium‑size vessels
Four‑pole design yields stable 1500 rpm operation at 50 Hz with reduced vibration
Class H insulation allows higher thermal margin and longer service life in hot engine rooms
Compact IP23 enclosure minimizes installation space while protecting against water spray

Weaknesses

IP23 protection is only splash‑proof; not suitable for locations exposed to heavy splashing or immersion
Fixed 690 V output may require additional step‑down equipment for lower‑voltage loads
No documented built‑in automatic voltage regulator (AVR) – external AVR may be needed
Single‑frequency (50 Hz) design limits use on vessels that operate with dual‑frequency systems

Typical Vessels: ContainerBulk CarrierGeneral CargoOffshore Supply Vessel

Decision Guide: Choose if you need a reliable 250 kVA marine alternator with compact footprint, can accommodate splash‑proof (IP23) installation conditions, and operate on a 50 Hz system. Avoid if the vessel requires higher ingress protection (e.g., IP55), dual‑frequency capability, or an integrated AVR.

Use Cases: Commonly installed as auxiliary generators to supply hotel loads, emergency power, or shaft‑generator backup on medium‑size merchant ships and offshore support vessels where space is limited and a robust, high‑temperature capable alternator is required.

Datasheet

MaraGlobe 250kVA 690V 60Hz unverified

· synchronous marine generator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design suitable for limited engine room space
Class H insulation allows operation at elevated ambient temperatures
Standard 690 V output matches most shipboard distribution systems
IP23 enclosure provides basic protection against splashing water and dust

Weaknesses

IP23 rating offers only limited ingress protection; not suitable for harsh, wet decks or explosion‑prone zones
No built‑in sound attenuation – may require additional muffling in noise‑sensitive vessels
Limited to 60 Hz operation; not directly compatible with regions requiring 50 Hz without a frequency converter
Absence of integrated control panel; requires separate governor and monitoring equipment

Typical Vessels: Offshore supply vesselFerrySmall bulk carrier (≤10,000 DWT)Container feederCoastal tanker

Decision Guide: Choose if: you need a reliable 250 kVA auxiliary generator for vessels with modest space constraints and standard 690 V distribution, operating in temperate climates where IP23 protection is sufficient. Avoid if: the installation demands higher ingress protection (IP55/56), strict noise limits, or operation in explosive atmospheres.

Use Cases: Commonly installed as an auxiliary power source for shipboard hotel loads, cargo‑handling equipment, and emergency generators on medium‑size commercial vessels operating in coastal or offshore environments.

Datasheet

MaraGlobe 315kVA 400V 50Hz unverified

· marine alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design provides stable voltage and frequency output
Insulation class H allows operation at higher temperatures typical of engine rooms
Standard 400 V/50 Hz rating matches most European‑type shipboard electrical systems
Marathon Electric’s long‑standing marine reputation ensures proven reliability

Weaknesses

IP23 enclosure limits use to dry or sheltered locations; not suitable for exposed deck installations
No built‑in emission control package is documented, which may be required for newer flag states
Limited to 400 V – vessels standardising on 440 V/60 Hz will need a transformer or alternative generator

Typical Vessels: Coastal tankerFerryOffshore supply vesselWorkboatSmall cruise ship

Decision Guide: Choose if: you need a 315 kVA auxiliary generator for vessels that can accommodate an indoor or sheltered installation and operate on 400 V/50 Hz. Avoid if: the installation environment is exposed to spray, seawater or requires higher ingress protection (IP55+), or if compliance with stricter emission standards is mandatory.

Use Cases: Commonly installed in engine rooms of medium‑size commercial vessels as the primary auxiliary generator supplying hotel loads, cargo handling equipment and navigation systems, or as a standby unit for redundancy on ships that already have a main generator set.

Datasheet

MaraGlobe 315kVA 400V 60Hz unverified

· synchronous marine generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Rated at 315 kVA, suitable for medium‑size vessel auxiliary power needs
Four‑pole design delivers stable 60 Hz output under varying loads
IP23 enclosure protects against splashing water and dust while keeping the unit compact
Class‑H insulation permits operation at elevated temperatures, enhancing durability
Marathon Electric’s reputation for robust marine‑grade construction

Weaknesses

IP23 rating is only splash‑proof; not ideal for environments with heavy spray or immersion
No integrated sound attenuation – additional muffling may be required in noise‑sensitive areas
External voltage regulation/control system typically needed, adding to installation complexity
Single‑unit configuration offers limited redundancy compared with twin‑generator setups

Typical Vessels: Offshore Supply VesselPlatform Supply VesselSmall Container ShipResearch / Survey VesselCruise Ferry

Decision Guide: Choose if: you need a reliable 315 kVA generator for medium‑size vessels, value compact footprint and high temperature insulation, and can accommodate external control equipment. Avoid if: the installation requires a fully sealed (IP66+) unit, built‑in acoustic treatment, or inherent redundancy without adding extra generators.

Use Cases: Commonly installed as an auxiliary power source in the ship’s main engine room to supply hotel loads, navigation systems, and emergency power; also used on offshore support vessels where space is limited but a robust 315 kVA output is required.

Datasheet

MaraGlobe 315kVA 440V 50Hz unverified

· diesel‑driven alternator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (315 kVA) suitable for medium‑size vessel hotel loads
Four‑pole design provides stable frequency and lower vibration
Insulation class H allows operation in high‑temperature engine rooms
Compact IP23 enclosure simplifies deck or cabin installation

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh, dusty or heavily sprayed environments
Limited to 50 Hz systems – not directly usable on vessels requiring 60 Hz
No integrated control panel is specified, requiring separate governor/electrical package
External cooling and mounting requirements may increase installation effort

Typical Vessels: Product tanker (up to ~30 000 dwt)Feeder container shipGeneral cargo/bulk carrierOffshore supply vesselCruise ship auxiliary generator set

Decision Guide: Choose if you need a reliable 315 kVA, 440 V 50 Hz marine alternator with high temperature tolerance and have space for an IP23‑rated unit. Avoid if the installation demands higher ingress protection (e.g., IP55), must operate on 60 Hz, or requires an all‑in‑one generator set with built‑in control electronics.

Use Cases: Typically installed as part of a diesel‑generator set to supply hotel power, emergency power, or auxiliary propulsion support on medium‑size commercial vessels and offshore platforms.

Datasheet

MaraGlobe 315kVA 440V 60Hz unverified

· Four‑pole medium‑speed marine alternator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H gives good thermal endurance for continuous operation
Four‑pole construction ensures stable 60 Hz output at rated load
315 kVA rating fits the auxiliary power needs of many mid‑size vessels
Compact IP23 enclosure simplifies installation in confined engine rooms

Weaknesses

IP23 provides only limited protection against water ingress; not suitable for exposed or wet locations
No built‑in advanced emission controls are specified, so compliance depends on the prime mover
Insulation class H may require more rigorous cooling management compared with lower classes
Limited publicly available data makes detailed performance comparison difficult

Typical Vessels: Coastal cargo vesselsSmall tankersOffshore supply vesselsFerriesResearch and survey ships

Decision Guide: Choose if you need a reliable 315 kVA auxiliary generator for a mid‑size vessel, value the robustness of class H insulation, and can accommodate an IP23 enclosure in a protected engine‑room space. Avoid if the installation area is exposed to heavy spray or seawater, or if higher ingress protection (e.g., IP44/IP55) or integrated emissions treatment is required.

Use Cases: Typically installed as the main auxiliary generator supplying hotel loads, navigation equipment, and emergency power on vessels where a compact, medium‑power unit is sufficient. It is also used in standby configurations for redundancy on offshore support ships.

Datasheet

MaraGlobe 315kVA 690V 50Hz unverified

· diesel-driven alternator set

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 315 kVA suitable for medium‑size vessel hotel loads
Four‑pole design provides stable 50 Hz frequency under varying load conditions
IP23 enclosure offers protection against dust and water spray typical of engine rooms
Insulation class H allows operation at elevated temperatures, improving reliability in hot climates
Marathon Electric’s long‑standing reputation for robust marine generators

Weaknesses

IP23 rating does not protect against immersion; additional ventilation or secondary sealing may be required in very wet environments
Single‑frequency (50 Hz) limits use on vessels that require dual‑frequency capability (e.g., 60 Hz markets)
Physical size and weight are relatively large for the power rating, which can impact installation space on smaller ships
No integrated automatic voltage regulator is specified, so an external AVR may be needed
Fuel consumption is typical of conventional diesel gensets and may be higher than newer low‑speed or hybrid alternatives

Typical Vessels: Bulk CarrierContainer ShipProduct TankerOffshore Supply VesselCruise Ship (mid‑size)

Decision Guide: Choose if you need a proven, high‑output 315 kVA generator for 690 V shipboard distribution on medium to large merchant vessels and prefer the reliability of a Marathon Electric unit. Avoid if your installation requires a higher IP rating, dual‑frequency operation, or the smallest possible footprint and fuel consumption.

Use Cases: Commonly installed as an auxiliary power source for hotel services, cargo handling equipment, and emergency generators on commercial ships; also used in dedicated generator rooms to supply critical loads when main propulsion is offline.

Datasheet

MaraGlobe 315kVA 690V 60Hz unverified

· high-speed marine alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint suitable for limited engine‑room space
Class H insulation allows operation at elevated temperatures
Four‑pole design provides stable voltage and frequency output
IP23 enclosure is adequate for deck‑mounted installations with splash protection
Marathon’s long service history gives proven reliability and spare‑parts support

Weaknesses

Only rated for 60 Hz; not suitable for vessels requiring 50 Hz power systems
IP23 rating does not protect against dust or heavy water ingress (not IP65)
Brush‑type construction requires periodic maintenance and brush replacement
Requires an external prime mover – no integrated engine, adding system complexity
Higher fuel consumption compared with newer low‑speed, high‑efficiency diesel generators

Typical Vessels: Container shipCrude oil tankerProduct tankerCruise linerOffshore supply vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a compact, high‑power‑density alternator for 690 V/60 Hz ship service power and already use Marathon or compatible prime movers. Avoid if your vessel operates on 50 Hz, requires a higher ingress protection rating (IP65+), or you prefer a brushless low‑maintenance generator set.

Use Cases: Typically installed as the main auxiliary generator on large merchant vessels to supply ship service loads such as lighting, HVAC, cargo handling equipment, and emergency power. Also used in cruise ships for hotel services where space is at a premium.

Datasheet

MaraGlobe 400kVA 400V 50Hz unverified

· diesel‑driven alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (400 kVA) suitable for medium‑size vessel service loads
Class H insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Standard 4‑pole design provides stable 50 Hz frequency at typical marine engine speeds
Compact IP23 enclosure simplifies installation in confined spaces

Weaknesses

IP23 rating offers limited protection against water ingress; additional shielding may be required for exposed locations
Noise and vibration levels are not specified and may need extra mitigation on passenger vessels
Physical dimensions and weight are not publicly disclosed, complicating preliminary space planning
No confirmed compliance with higher‑grade marine certifications (e.g., IMO D‑2) without further documentation

Typical Vessels: Container shipBulk carrierProduct tankerOffshore supply vesselCruise ship (service power)

Decision Guide: Choose if: you need a proven 400 kVA marine generator with high‑temperature insulation for service power on medium to large vessels and can accommodate an IP23 enclosure. Avoid if: the installation requires a higher ingress protection rating, strict noise limits, or verified IMO D‑2/USCG type approval without additional documentation.

Use Cases: The MaraGlobe 400kVA is typically installed as part of the main service power plant on cargo and offshore vessels, providing continuous electricity for propulsion auxiliaries, hotel loads, and emergency standby generation.

Datasheet

MaraGlobe 400kVA 400V 60Hz unverified

· synchronous marine alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 400 kVA in a relatively compact footprint suitable for medium‑size vessels
Class‑H insulation provides robust thermal tolerance and longer winding life
Four‑pole design yields stable 60 Hz output with reduced vibration compared to higher‑pole units
IP23 enclosure offers basic protection against dust and splash, simplifying installation in engine rooms

Weaknesses

IP23 rating does not protect against heavy water ingress; additional sealing may be required for harsh marine environments
Limited documentation publicly available – verification of dimensions, weight and mounting details needed before procurement
No built‑in redundancy features (e.g., dual windings) that some competing generators provide for critical loads

Typical Vessels: Platform supply vesselOffshore support vesselMedium‑size ferrySmall cruise shipCoastal cargo carrier

Decision Guide: Choose if: you need a reliable 400 kVA source for vessels with moderate power demand, have space constraints and can accommodate an IP23 enclosure. Avoid if: the installation requires high ingress protection (IP44 or higher) or you mandate certified redundancy for mission‑critical systems.

Use Cases: The MaraGlobe is commonly installed as the main auxiliary generator on offshore supply ships, providing electricity for deck machinery, hotel loads and emergency power where a compact, single‑unit solution is preferred.

Datasheet

MaraGlobe 400kVA 440V 50Hz unverified

· four‑pole brushless marine alternator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (400 kVA) suitable for medium‑size vessel hotel loads
Insulation class H provides good thermal tolerance for harsh engine room environments
Four‑pole design gives stable voltage and lower ripple compared with two‑pole units
Standard 440 V/50 Hz rating matches most European‑type ship electrical systems

Weaknesses

IP23 enclosure only protects against splashing water; not suitable for dusty or heavily sprayed areas without additional shielding
Single‑frequency (50 Hz) limits use on vessels that require dual‑frequency capability (e.g., 60 Hz markets)
No built‑in sound attenuation; may need external muffling in noise‑sensitive spaces
Physical dimensions and weight are not published, requiring careful space planning

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise liner (auxiliary power)

Decision Guide: Choose if you need a reliable 400 kVA auxiliary generator for 440 V/50 Hz systems, can accommodate an IP23 enclosure and value the high‑temperature insulation class H. Avoid if your vessel operates in environments requiring higher ingress protection (e.g., IP55) or needs dual‑frequency capability.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, emergency power, or as a standby unit for propulsion support on medium‑size commercial vessels operating primarily in 50 Hz regions.

Datasheet

MaraGlobe 400kVA 440V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

400 kVA output suitable for a wide range of auxiliary loads on medium‑size ships
H‑class insulation allows reliable operation in high ambient temperatures
IP23 enclosure provides basic protection against dust and spray while keeping the unit compact
Four‑pole construction delivers stable 60 Hz frequency with low vibration
Marathon Electric’s reputation for durability and long service intervals

Weaknesses

IP23 rating offers limited weather protection; not ideal for exposed deck installations
Designed for 60 Hz only, unsuitable for vessels requiring 50 Hz power systems
Physical size and weight are typical of conventional generators – may be restrictive in tight engine rooms
Fuel consumption higher than newer high‑efficiency or hybrid generator sets
No built‑in redundancy; a separate standby unit is required for critical applications

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise ship (auxiliary power)

Decision Guide: Choose if you need a proven 400 kVA diesel generator for 60 Hz service on US‑flagged or other 60 Hz vessels, operate in warm climates, and have space for a standard IP23 enclosure. Avoid if the installation demands higher ingress protection (IP55+), 50 Hz operation, compact weight‑critical solutions, or integrated redundancy.

Use Cases: Provides ship service power for hotel loads, cargo handling equipment, navigation and communication systems on medium‑size vessels; commonly installed as the main auxiliary generator on US‑flagged ships and used as a standby unit on larger fleets.

Datasheet

MaraGlobe 400kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High 400 kVA output suitable for a wide range of ship service loads
Class H insulation allows operation in high temperature environments
Standard 690 V three‑phase voltage matches most marine distribution systems
Four‑pole design delivers stable 1500 rpm at 50 Hz, reducing vibration
IP23 enclosure provides basic protection against dust and limited water spray typical of engine rooms

Weaknesses

IP23 rating offers only limited ingress protection; not suitable for harsh wet locations without additional shielding
Designed for 50 Hz operation only – unsuitable for vessels requiring 60 Hz power
No integrated automatic voltage regulator (AVR) is specified, potentially requiring external control equipment
Physical footprint can be large due to four‑pole construction, impacting tight engine‑room layouts
May require an auxiliary cooling system depending on installation conditions

Typical Vessels: Bulk CarrierContainer ShipGeneral Cargo VesselRo‑Ro FerryOffshore Supply Vessel

Decision Guide: Choose if you need a proven 400 kVA auxiliary power source for 50 Hz vessels, have space for an IP23 unit and can provide external voltage regulation or cooling. Avoid if the installation demands higher ingress protection (IP44+), 60 Hz operation, or an all‑in‑one AVR solution.

Use Cases: Commonly installed as a main auxiliary generator to supply ship service loads such as lighting, HVAC, cargo handling equipment, and refrigeration plants; also used as an emergency generator on vessels where redundancy is required.

Datasheet

MaraGlobe 400kVA 690V 60Hz unverified

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides good thermal tolerance for continuous marine operation
Standard 690 V three‑phase output matches common shipboard distribution voltages
Four‑pole construction yields a stable 1500 rpm speed, simplifying engine coupling
IP23 enclosure offers protection against dust and water spray typical of deck installations

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; additional shielding may be required in harsh weather zones
No integrated sound‑attenuation package – external mufflers or enclosures may be needed to meet crew comfort standards
Physical dimensions, weight and cooling requirements are not specified, requiring detailed engineering review before installation
Limited documented certifications; compliance verification with classification societies may add paperwork

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if: you need a proven 400 kVA marine generator with standard 690 V output, have space for an IP23‑rated unit and can provide additional splash protection or sound mitigation. Avoid if: the vessel operates in extreme weather where higher ingress protection (IP44/55) is required, or if certification documentation must be supplied up front.

Use Cases: Typically installed as a main or auxiliary generator on large commercial vessels to supply propulsion auxiliaries, hotel loads, and cargo handling equipment, especially where a four‑pole alternator can be directly coupled to a 1500 rpm diesel prime mover.

Datasheet

MaraGlobe 500kVA 400V 50Hz unverified

· marine synchronous generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (500 kVA) suitable for medium‑size vessels
Robust Class H insulation allows operation at elevated temperatures
IP23 rating provides protection against splashing water in engine rooms
Standard 400 V/50 Hz interface matches most shipboard electrical systems

Weaknesses

IP23 does not protect against dust or heavy ingress, limiting placement options
Single‑frequency (50 Hz) may require conversion equipment for vessels operating on 60 Hz grids
Typical size and weight of a 500 kVA unit demand dedicated space and structural support
No built‑in sound attenuation; additional silencing may be required in noise‑sensitive areas

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vessel

Decision Guide: Choose if: you need a reliable 500 kVA source for vessels that operate on 400 V/50 Hz systems and have space for a standard marine generator with splash protection. Avoid if: the installation requires dust‑tight (IP5X/IP6X) enclosures, dual‑frequency capability, or integrated acoustic treatment.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size merchant ships, providing power for cargo handling equipment, hotel loads, and emergency services when shore power is unavailable.

Datasheet

MaraGlobe 500kVA 400V 60Hz unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

500 kVA output fits the auxiliary power requirement of medium‑size vessels without excessive oversizing.
Standard 400 V/60 Hz three‑phase rating matches most US‑flagged ship electrical systems.
IP23 enclosure provides protection against solid objects and light water spray, suitable for sheltered deck installations.
Insulation class H gives a high thermal margin (up to 180 °C) improving reliability in hot climates.
Four‑pole design runs at 1500 rpm on 60 Hz, allowing use of conventional diesel prime movers.

Weaknesses

IP23 is not rated for heavy rain or immersion; the unit must be placed under a canopy or inside a protected space.
No documented IMO/DNV/USCG certification listed for this specific model, which may limit acceptance on some flag states.
Only available in 60 Hz; vessels operating on 50 Hz systems would need a different generator.
Limited information on parallel operation or redundancy features.
Fuel‑efficiency and emissions data are not publicly specified.

Typical Vessels: TankerContainer shipBulk carrierCruise liner (mid‑size)Offshore supply vessel

Decision Guide: Choose if you need a mid‑range 500 kVA generator for a US‑type 400 V/60 Hz electrical system and can provide a protected installation area. Avoid if your vessel requires higher ingress protection (e.g., IP55+), must meet specific class society approvals, or operates on a 50 Hz power grid.

Use Cases: Provides main auxiliary power for hotel services, cargo handling equipment, and emergency standby power on vessels where space is limited and a standard 400 V/60 Hz supply is required. Commonly installed in engine rooms or sheltered deck compartments of tankers, container ships, and offshore support vessels.

Datasheet

MaraGlobe 500kVA 440V 50Hz unverified

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (500 kVA) suitable for medium‑size vessels
Four‑pole construction provides stable 50 Hz frequency at 1500 rpm
Insulation class H gives a wide thermal margin (up to 180 °C)
Compact IP23 enclosure saves space in engine rooms
Marathon Electric’s reputation for durable marine electrical equipment

Weaknesses

IP23 rating only protects against limited water spray; additional shielding may be required in harsh environments
No integrated sound‑attenuation or vibration isolation noted, possibly needing extra mufflers
Control and monitoring functions are not built into the unit, requiring separate governor/monitoring gear
Limited publicly available documentation; verification of full specifications is needed

Typical Vessels: Container shipBulk carrierOffshore supply vesselCruise ship (auxiliary power)Naval auxiliary vessel

Decision Guide: Choose if you need a reliable 500 kVA, 440 V source for medium‑size ships and can provide additional protection against harsh marine exposure. Avoid if the installation requires a higher IP rating or an all‑in‑one generator set with integrated control panels.

Use Cases: Commonly installed as the main service generator on medium‑sized cargo vessels, as a standby generator for critical ship systems, or as auxiliary power on offshore platforms where space is at a premium.

Datasheet

MaraGlobe 500kVA 440V 60Hz unverified

· low-speed diesel generator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation allows operation in high ambient temperatures
Four‑pole design provides stable 60 Hz output with low vibration
500 kVA rating fits a wide range of mid‑size ship power needs
Marathon Electric has an established reputation for marine electrical equipment

Weaknesses

IP23 enclosure offers limited protection against water spray and dust compared with higher IP ratings
Maximum output may be insufficient for large tankers or cruise ships requiring >1 MW auxiliary power
Specific certification data (IMO D‑2, USCG) not publicly confirmed for this model

Typical Vessels: Offshore supply vesselFerrySmall to medium container shipBulk carrier (up to ~30 kt)Research vessel

Decision Guide: Choose if you need a reliable 500 kVA auxiliary power source with robust temperature tolerance and can accept an IP23 enclosure on a mid‑size vessel. Avoid if the installation requires higher ingress protection (e.g., IP65) or significantly larger power capacity.

Use Cases: Commonly installed as the main auxiliary generator set for shipboard hotel loads, cargo handling equipment, and emergency power on vessels where space and weight are moderate constraints.

Datasheet

MaraGlobe 500kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Insulation class H allows operation up to 180 °C, suitable for hot engine rooms.
IP23 enclosure protects against dust and splash water, ideal for indoor or sheltered installations.
Four‑pole design delivers 1500 rpm at 50 Hz, matching standard marine drive speeds.
Marathon Electric’s reputation for durability and long service intervals.
Standard 690 V output aligns with most shipboard distribution systems.

Weaknesses

IP23 rating is not sufficient for exposed outdoor mounting; requires a protected space.
Fixed 50 Hz frequency limits use on vessels that operate on 60 Hz power grids without converters.
Weight and dimensions are typical of 500 kVA units, requiring adequate structural support (exact figures unavailable).
No built‑in redundancy; a separate standby generator is needed for critical applications.
Ventilation must be provided to manage heat dissipation in confined engine rooms.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Certifications: IMO D-2USCG Type Approval

Decision Guide: Choose if you need a 500 kVA, 690 V generator for vessels operating on 50 Hz power and can provide a protected installation space. Avoid if the unit must be mounted outdoors, operate on 60 Hz systems without frequency conversion, or if built‑in redundancy is required.

Use Cases: Commonly installed as the main auxiliary generator on medium‑size merchant ships, providing power for hotel services, cargo handling equipment, and emergency lighting; also used as a standby generator in critical shipboard applications.

Datasheet

MaraGlobe 500kVA 690V 60Hz unverified

· marine diesel‑generator set

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Insulation class H allows operation in ambient temperatures up to ~180 °C, suitable for hot engine rooms.
Four‑pole construction delivers stable frequency with lower harmonic distortion compared to high‑speed two‑pole units.
IP23 enclosure offers protection against dust and water spray while keeping the unit relatively compact.
500 kVA rating matches the auxiliary power needs of many medium‑size vessels without oversizing.
Marathon Electric’s long service history provides proven reliability in harsh marine environments.

Weaknesses

IP23 rating does not protect against heavy water ingress; unsuitable for exposed deck installations.
690 V output may require additional step‑up/step‑down gear on vessels standardized on 440 V or 11 kV systems.
Four‑pole machines are generally larger and heavier than high‑speed two‑pole alternatives of the same power rating.
Limited published data; detailed performance curves and dimensions often need direct manufacturer confirmation.

Typical Vessels: Medium‑size tankersOffshore supply vessels (OSV)Cruise ships (auxiliary power)Container ships (mid‑deck auxiliary)Bulk carriers

Decision Guide: Choose if: you need a robust 500 kVA generator with high temperature tolerance, prefer a four‑pole design for stable frequency, and can accommodate an IP23 enclosure on a protected location. Avoid if: the installation requires higher ingress protection (IP44+), operates primarily at voltages other than 690 V, or weight/space constraints favor a more compact high‑speed unit.

Use Cases: Typically installed in engine rooms as primary auxiliary power for cargo handling equipment, hotel services, and emergency generation on medium‑size commercial vessels. Also used on offshore platforms where high ambient temperatures are common.

Datasheet

MaraGlobe 630kVA 400V 50Hz unverified

· brush‑less marine alternator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (630 kVA) suitable for medium‑size vessels' main auxiliary load
Robust H‑class insulation tolerates elevated operating temperatures
Integrated control panel provides automatic voltage regulation and fault monitoring
Four‑pole design ensures stable 50 Hz frequency under varying loads
Compact IP23 enclosure fits typical engine‑room spaces

Weaknesses

IP23 rating limits exposure to harsh weather; not suitable for outdoor mounting without additional protection
Single voltage (400 V) and frequency may require conversion for vessels operating on 60 Hz or dual‑voltage systems
Physical size and weight can be a constraint on smaller ships or retrofits
Older control electronics may lack modern remote diagnostics found in newer digital generators
Spare‑parts availability depends on Marathon’s regional support network

Typical Vessels: Product TankerContainer Ship (mid‑size)Bulk Carrier (8–12 kt)Cruise FerryOffshore Supply Vessel

Decision Guide: Choose if you need a proven, high‑capacity auxiliary generator with built‑in voltage regulation for vessels that operate primarily in temperate climates and have engine‑room space for an IP23 unit. Avoid if the installation requires outdoor mounting, dual‑frequency capability (50/60 Hz), or the smallest possible footprint.

Use Cases: Typically installed as the main auxiliary generator on medium‑size cargo and passenger vessels, providing power for hotel services, cargo handling equipment, and emergency lighting; also used in shore‑power setups where a stable 400 V supply is required.

Datasheet

MaraGlobe 630kVA 400V 60Hz unverified

· marine synchronous generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (630 kVA) suitable for medium‑to‑large ship service loads
Insulation class H provides excellent temperature tolerance and reliability
Four‑pole design runs at 1500 rpm on 60 Hz, giving good torque and reduced wear
Compact integrated generator/alternator reduces installation footprint

Weaknesses

IP23 enclosure offers only splash protection; not ideal for harsh spray or dust environments
Fixed 400 V / 60 Hz output may require converters on vessels standardized on 50 Hz systems
No publicly documented type‑approval certifications, which can delay class approval processes
Weight and dimensions are unspecified, potentially limiting installation in space‑constrained engine rooms

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise liner (mid‑size)

Decision Guide: Choose if you need a robust 630 kVA auxiliary generator with high temperature tolerance and have space for an IP23 enclosure on a 400 V/60 Hz system. Avoid if your vessel requires higher ingress protection (e.g., IP55), operates on 50 Hz, or must present documented class society type‑approval certificates before installation.

Use Cases: Typically installed as the main auxiliary generator in engine rooms to supply ship service loads such as cargo handling equipment, hotel services, and emergency power. Also used for shore‑power generation where a stable 400 V/60 Hz output is required.

Datasheet

MaraGlobe 630kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (630 kVA) suitable for medium‑size ship hotel loads and emergency power.
Insulation class H provides thermal tolerance up to 180 °C, enhancing reliability in hot engine rooms.
Four‑pole design yields stable 1500 rpm operation at 50 Hz, matching standard marine prime‑movers.
IP23 enclosure offers basic protection against solid objects and limited water spray, sufficient for typical engine‑room environments.

Weaknesses

IP23 is a modest ingress protection rating; not ideal for harsh wet or corrosive compartments requiring higher sealing.
Single frequency (50 Hz) limits use on vessels that operate on dual‑frequency (50/60 Hz) power systems.
No integrated sound attenuation package mentioned, so additional silencing may be required in noise‑sensitive installations.
Specification details such as weight, dimensions and fuel‑engine compatibility are not publicly documented, requiring a detailed vendor quote.

Typical Vessels: Bulk CarrierContainer ShipProduct TankerOffshore Supply VesselCruise Ship (auxiliary power)

Decision Guide: Choose the MaraGlobe 630 kVA when you need a proven 630 kVA, 440 V/50 Hz marine generator with robust thermal insulation and can accommodate an IP23 enclosure. Avoid it if your vessel requires higher ingress protection (e.g., IP54 or above), dual‑frequency capability, or an integrated acoustic enclosure.

Use Cases: Commonly installed as a main auxiliary generator supplying hotel services, cargo handling equipment, and emergency power on medium‑size commercial vessels; also used in offshore platforms where standard 50 Hz supply is mandated.

Datasheet

MaraGlobe 630kVA 440V 60Hz unverified

· diesel‑driven synchronous alternator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (630 kVA) suitable for large auxiliary loads
H‑class insulation tolerates elevated operating temperatures
Robust 4‑pole design provides stable 60 Hz frequency
Proven Marathon brand reputation for reliability and service support
Compact marine‑grade enclosure (IP23) fits typical engine room layouts

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for exposed deck installations
Physical size and weight restrict use to vessels with ample engine‑room space
Older control architecture may lack modern digital monitoring features
Requires diesel fuel and associated cooling system, limiting flexibility for alternative fuels
No built‑in redundancy; a separate standby set is needed for emergency compliance

Typical Vessels: Crude oil tankerContainer shipBulk carrierOffshore supply vesselCruise liner (hotel load)LNG carrier (auxiliary power)

Decision Guide: Choose if: you need a proven, high‑capacity 630 kVA generator for main hotel or auxiliary loads on large vessels and can accommodate its size and IP23 enclosure. Avoid if: the installation requires higher ingress protection (e.g., IP55), tighter weight/space constraints, or advanced digital control systems.

Use Cases: Typically installed as a primary auxiliary generator to supply shipboard electrical distribution, hotel services, cargo‑handling equipment, and emergency power on large commercial vessels where reliable, high‑power output is critical.

Datasheet

MaraGlobe 630kVA 690V 50Hz unverified

· four‑pole synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High thermal rating (Class H) allows operation in hot engine rooms without derating.
Four‑pole design runs at 1500 rpm on 50 Hz, matching common marine prime movers and reducing bearing wear.
IP23 enclosure provides protection against splashing water and dust while allowing easy access for maintenance.
Compact footprint relative to its 630 kVA rating, facilitating installation in space‑constrained engine rooms.

Weaknesses

IP23 rating does not protect against direct water jets; additional sealing may be required in very wet locations.
Fixed 690 V output limits flexibility for vessels that standardise on 440/660 V distribution systems.
No built‑in redundancy; a single unit failure would require standby generation or rapid repair procedures.

Typical Vessels: Crude oil tankerProduct tankerContainer ship (mid‑size)Bulk carrier (large)Offshore supply vessel

Decision Guide: Choose if you need a robust 630 kVA generator with high temperature insulation for vessels that operate in hot engine rooms and can accommodate a 690 V distribution system. Avoid if your ship requires higher voltage levels, stricter water‑jet protection (IP≥44), or built‑in redundancy without adding extra units.

Use Cases: The MaraGlobe 630 kVA is typically installed as the main auxiliary generator on tankers and bulk carriers to supply hotel loads, cargo handling equipment, and emergency power. It is also used on offshore support vessels where compact size and high thermal tolerance are critical.

Datasheet

MaraGlobe 630kVA 690V 60Hz unverified

· synchronous marine alternator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (630 kVA) suitable for medium‑size vessel auxiliaries
Insulation class H provides good thermal tolerance for continuous operation
Four‑pole design offers stable frequency control at 60 Hz
IP23 enclosure balances protection against splashing water with easier maintenance access

Weaknesses

IP23 rating is not splash‑proof for heavy sea spray; may require additional shielding in harsh environments
Physical size and weight typical of a 630 kVA unit can be substantial, impacting installation space
Limited to 60 Hz systems – not directly compatible with vessels operating on 50 Hz without frequency conversion

Typical Vessels: Offshore supply vesselMedium‑size container shipFerryCruise ship auxiliary power plantCoastal tanker

Decision Guide: Choose if you need a reliable 630 kVA, 690 V, 60 Hz generator for vessels that operate primarily in moderate marine climates and have space for a standard‑size alternator. Avoid if the installation requires higher ingress protection (e.g., IP66) or must run on 50 Hz power systems.

Use Cases: Typically installed as the main auxiliary generator on medium‑sized commercial ships, providing electricity for hotel loads, cargo handling equipment, and emergency power. Also used in shore‑power conversion sets where a robust 690 V source is required.

Datasheet

MaraGlobe 800kVA 400V 50Hz unverified

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Insulation class H provides good thermal endurance for continuous operation.
Four‑pole construction offers stable frequency and lower vibration compared with higher‑pole designs.
800 kVA output fits the hotel‑load and small propulsion‑assist needs of many mid‑size ships.
IP23 enclosure protects against dust and splash water, suitable for typical sea‑state exposure.

Weaknesses

IP23 is not fully watertight; may be inadequate for harsh, high‑spray environments without additional protection.
Designed for 50 Hz systems only – vessels operating on 60 Hz grids would require frequency conversion or a different model.
No publicly confirmed certifications (IMO D‑2, USCG Type Approval, etc.) limits immediate class approval confidence.
Physical dimensions and weight are not disclosed, making installation planning uncertain.

Decision Guide: Choose if the vessel operates in regions with a 50 Hz power system, needs a reliable 800 kVA auxiliary source, and can accommodate an IP23‑rated unit. Avoid if you require full splash‑proof (IP66+) protection, 60 Hz compatibility, or documented class approvals before installation.

Use Cases: Commonly installed as an auxiliary generator on medium‑size cargo ships, ferries, offshore supply vessels, and cruise ship hotel‑load systems where a robust 400 V, 50 Hz power source is required for lighting, HVAC, and deck machinery.

Datasheet

MaraGlobe 800kVA 400V 60Hz unverified

· marine alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (800 kVA) suitable for medium‑size ship hotel loads
Insulation class H permits operation at elevated temperatures, improving reliability in hot engine rooms
Four‑pole design matches the standard 60 Hz frequency without requiring gear reduction
Compact IP23 enclosure fits into confined machinery spaces while providing basic protection against splashing water

Weaknesses

IP23 rating offers only limited ingress protection; not ideal for harsh, wet deck installations
No documented higher‑grade certifications (e.g., IMO D‑2) in publicly available data
Noise and vibration levels are typical of conventional brush‑type alternators – may require additional mitigation on passenger vessels

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferry

Decision Guide: Choose if you need a robust 800 kVA auxiliary generator for vessels with standard 400 V, 60 Hz distribution and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (IP55 or better), ultra‑low noise operation, or specific class approvals such as IMO D‑2.

Use Cases: Commonly installed in the machinery space of medium‑size merchant ships to supply hotel services, cargo handling equipment, and emergency power; also used as a standby generator for propulsion auxiliaries on vessels that operate primarily on diesel engines.

Datasheet

MaraGlobe 800kVA 440V 50Hz unverified

· Four-pole synchronous marine alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (800 kVA) suitable for large vessel hotel loads
Class‑H insulation provides excellent thermal endurance in harsh marine environments
Standard 440 V/50 Hz rating matches most international shipboard power systems
Robust IP23 enclosure offers protection against dust and limited splashing while keeping cooling efficiency high
Four‑pole design yields smoother voltage waveform and lower ripple

Weaknesses

Large physical footprint and weight may limit installation on vessels with constrained machinery spaces
IP23 rating does not protect against direct water jets, requiring careful placement in wet zones
Fixed 440 V output limits flexibility for vessels that operate on alternative voltage levels (e.g., 660 V)
Higher maintenance intervals typical of large synchronous generators compared with newer modular diesel‑generator sets

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>10,000 TEU)Cruise linersOffshore supply vesselsLNG carriers

Decision Guide: Choose if: you need a proven, high‑power auxiliary generator for a large vessel operating on a 50 Hz system and have sufficient space for a traditional alternator. Avoid if: weight, footprint, or the need for higher voltage flexibility are primary constraints, or if you require an enclosure with greater water ingress protection.

Use Cases: Typically installed as a main auxiliary generator to supply hotel services (lighting, HVAC, galley), emergency power, and sometimes as a secondary source for propulsion‑support on large commercial ships and offshore support vessels.

Datasheet

MaraGlobe 800kVA 440V 60Hz unverified

· four‑pole marine alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (800 kVA) suitable for large hotel loads
H‑class insulation allows operation at elevated temperatures
IP23 enclosure provides protection against splash and dust in typical engine rooms
Four‑pole design gives stable frequency and lower vibration compared with two‑pole units
Widely used by operators familiar with Marathon Electric service network

Weaknesses

IP23 rating is not fully sealed; additional protective measures needed in harsh spray zones
Designed for 60 Hz only – unsuitable for vessels requiring 50 Hz systems without a frequency converter
Physical size and weight are substantial for the power rating, impacting installation space
Older‑generation control electronics may lack built‑in remote monitoring features found on newer models
Fuel efficiency is comparable to conventional diesel generators but lower than modern low‑speed units

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑output 800 kVA generator for 60 Hz fleets and value Marathon’s global support network. Avoid if your vessel requires higher ingress protection (IP66+), operates on 50 Hz, or you are prioritising the latest low‑emission, remotely monitored generators.

Use Cases: The MaraGlobe 800 kVA is typically installed as a main auxiliary generator to supply hotel services, cargo handling equipment, and emergency power on large commercial vessels. It can also serve as a standby unit for propulsion support on ships with diesel‑electric or hybrid propulsion arrangements.

Datasheet

MaraGlobe 800kVA 690V 50Hz unverified

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (800 kVA) suitable for medium‑size vessel service loads
Four‑pole design provides stable 1500 rpm operation at 50 Hz
Insulation class H allows operation in high ambient temperature environments
IP23 enclosure offers splash protection while keeping the unit relatively compact

Weaknesses

IP23 rating does not protect against heavy water ingress, limiting placement to dry or well‑ventilated spaces
Large power rating may require significant installation space and structural support
No built‑in redundancy; a single failure can affect shipboard power supply

Typical Vessels: Container ships (up to ~10,000 TEU)Bulk carriersGeneral cargo vesselsOffshore supply vesselsCruise ships (mid‑size)

Decision Guide: Choose if: you need a robust 800 kVA marine generator with high temperature tolerance and can provide a dry engine‑room location for an IP23 unit. Avoid if: the installation area is exposed to heavy spray or flooding, or if space and weight constraints are critical.

Use Cases: Commonly installed as the main auxiliary power source on medium‑size cargo and offshore vessels where a single high‑capacity generator meets the ship's electrical demand while complying with standard marine safety practices.

Datasheet

MaraGlobe 800kVA 690V 60Hz unverified

· synchronous marine generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (800 kVA) suitable for medium‑to‑large vessels
Standard 690 V/60 Hz rating matches most marine electrical systems
IP23 enclosure provides protection against splashing water in engine rooms
Insulation class H allows operation at elevated temperatures

Weaknesses

IP23 rating offers limited dust and moisture protection; not suitable for harsh offshore exposure without additional shielding
No documented certifications (e.g., IMO D‑2, USCG) limits acceptance on some flag states
Physical dimensions, weight and mounting details are not publicly available, requiring custom installation engineering

Typical Vessels: Cruise shipOffshore supply vesselLNG carrier (auxiliary power)Large container ship (secondary generator)

Decision Guide: Choose if you need a 800 kVA, 690 V/60 Hz marine generator and the installation environment meets IP23 protection levels. Avoid if higher ingress protection (e.g., IP55) or documented class approvals are mandatory for the vessel’s classification society.

Use Cases: Commonly installed as a main or auxiliary power source on vessels that require substantial electrical output for propulsion auxiliaries, hotel loads, and cargo handling equipment, especially where space constraints favor a compact 4‑pole design.

Datasheet

MaraGlobe 1000kVA 400V 50Hz unverified

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (1 MVA) suitable for medium‑size vessel electrical loads
Insulation class H allows operation in high‑temperature environments
Four‑pole construction provides stable 50 Hz output under varying load

Weaknesses

IP23 enclosure offers limited protection against water spray, unsuitable for exposed wet zones
Large power rating requires significant installation space and structural support
High thermal class may necessitate robust cooling system and regular maintenance

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise liner (auxiliary power)

Decision Guide: Choose if: you need a reliable 1 MVA auxiliary generator for vessels operating on 50 Hz systems and can accommodate an IP23‑rated unit with adequate ventilation. Avoid if: the installation area is exposed to heavy spray or seawater ingress, or weight/space constraints are critical.

Use Cases: Commonly installed as a main auxiliary generator on medium‑size commercial ships, providing power for hotel services, cargo handling equipment, and emergency systems where a robust 400 V supply is required.

Datasheet

MaraGlobe 1000kVA 400V 60Hz unverified

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation permits sustained operation in high ambient temperatures.
Four‑pole design provides smoother voltage and frequency stability at 60 Hz.
IP23 enclosure offers protection against splashing water and limited dust ingress, suitable for typical engine‑room environments.
Standard 400 V output matches most shipboard distribution systems, simplifying integration.

Weaknesses

IP23 rating is modest; additional shielding may be required in heavy spray or corrosive zones.
Relatively large physical size compared with compact, high‑density gensets of similar power.
May need auxiliary ventilation or cooling in confined spaces to maintain temperature limits.

Typical Vessels: Offshore supply vesselMedium‑size tanker (up to 30 k DWT)Container feederCruise ship auxiliary powerResearch / survey vessels

Decision Guide: Choose if you need a reliable 1 MVA source at 400 V, operate in warm climates, and have an engine‑room environment where IP23 protection is sufficient. Avoid if the installation demands higher ingress protection (e.g., IP55+) or ultra‑compact footprint.

Use Cases: Provides main propulsion auxiliary power, hotel load support, emergency generator duties, and shore‑power conversion on vessels requiring stable 60 Hz supply.

Datasheet

MaraGlobe 1000kVA 440V 50Hz unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1 MVA suitable for main auxiliary loads on large ships
Standard 440 V/50 Hz rating matches most shipboard electrical systems
Four‑pole construction offers stable frequency and reduced vibration
IP23 enclosure protects against splashing water in typical marine environments
Insulation class H allows operation at elevated temperatures

Weaknesses

IP23 provides only splash protection; not suitable for dusty or highly corrosive spaces without additional shielding
Physical size and weight of a 4‑pole 1 MVA unit can limit installation flexibility on smaller vessels
No built‑in sound attenuation; may require extra acoustic insulation in noise‑sensitive areas
Requires regular maintenance of brushes and exciter system typical of synchronous machines

Typical Vessels: Container shipCrude oil tankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 1 MVA auxiliary power source with standard 440 V/50 Hz output and can accommodate its size and IP23 protection level. Avoid if the installation space is limited, higher ingress protection (e.g., IP54) is required, or a brush‑less design is preferred for lower maintenance.

Use Cases: Commonly installed as a main auxiliary generator on large cargo vessels, as an emergency power source on cruise ships, and as shore‑power generation units on offshore platforms where robust, high‑capacity output is essential.

Datasheet

MaraGlobe 1000kVA 440V 60Hz unverified

· diesel-driven alternator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

1 MVA output suitable for both propulsion and hotel loads on large ships
Robust IP23 enclosure allows deck‑mount installation with splash protection
Class H insulation tolerates high operating temperatures, extending service life
Compact 4‑pole design reduces footprint compared to lower‑speed units
Marathon Electric’s reputation for reliability and global support

Weaknesses

Limited to 60 Hz operation; not directly usable in 50 Hz markets without frequency conversion
IP23 rating provides only splash protection, insufficient for harsh dusty or corrosive environments
Typical high‑speed diesel drive can have higher fuel consumption than low‑speed alternatives
Weight and size are substantial (exact figures unavailable), impacting installation planning
May require additional cooling equipment to maintain temperature limits in hot climates

Typical Vessels: Cruise shipContainer vesselBulk carrierOffshore support vesselRo‑Ro ferry

Decision Guide: Choose if you need a proven 1 MVA, 60 Hz generator with robust temperature tolerance and can accommodate an IP23 deck‑mounted unit on large ocean‑going vessels. Avoid if operating primarily in 50 Hz regions, require higher ingress protection (e.g., IP55), or are seeking the lowest possible fuel consumption offered by low‑speed gensets.

Use Cases: Typically installed as the main generator set on large commercial ships to supply propulsion power and hotel services, or as a high‑capacity emergency power source for critical systems such as navigation, cargo handling equipment, and fire‑pump operation.

Datasheet

MaraGlobe 1000kVA 690V 50Hz unverified

· marine synchronous generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1000 kVA) suitable for large vessels
Class H insulation allows operation at elevated temperatures
IP23 enclosure provides splash protection typical of engine‑room environments
Four‑pole design gives stable 1500 rpm operation at 50 Hz
Marathon Electric reputation for reliability and long service life

Weaknesses

IP23 rating does not protect against dust ingress or heavy water exposure
Single voltage (690 V) limits flexibility for vessels requiring dual‑voltage systems
Physical size and weight can be significant on space‑constrained installations
No publicly confirmed IMO Tier III emissions compliance for the model
Lack of documented certification (e.g., ABS, DNV) specific to this unit

Typical Vessels: Crude oil tankerContainer shipCruise linerOffshore supply vesselBulk carrier

Decision Guide: Choose if: you need a proven 1 MVA generator for main auxiliary or emergency power on large vessels, operate in an engine‑room environment where splash protection (IP23) is sufficient, and value Marathon’s service network. Avoid if: the installation requires higher ingress protection, dual‑voltage capability, strict IMO Tier III emissions limits, or verified classification society approvals.

Use Cases: Typically installed as a main auxiliary generator on large merchant ships to supply propulsion auxiliaries and hotel loads, or as an emergency power source for critical safety systems on cruise ships and offshore platforms.

Datasheet

MaraGlobe 1000kVA 690V 60Hz unverified

· diesel-driven alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1 MVA suitable for large hotel and propulsion loads
Standard 690 V/60 Hz rating aligns with most existing marine electrical systems
Insulation class H provides good thermal endurance for demanding operations
Four‑pole design yields a moderate speed (≈1500 rpm) balancing efficiency and wear

Weaknesses

IP23 enclosure offers only limited splash protection; not suitable for harsh wet‑deck exposure
Physical size and weight are substantial, requiring dedicated engine room space
Fuel consumption is relatively high at full load compared with newer low‑speed engines
Noise and vibration levels typical of conventional diesel generators may need additional mitigation

Typical Vessels: Crude oil tankerLNG carrierContainer shipBulk carrierOffshore supply vessel

Decision Guide: Choose if you need a proven, high‑power auxiliary generator for vessels already using 690 V/60 Hz systems and can accommodate a standard IP23 enclosure. Avoid if the installation requires higher ingress protection (IP65+), ultra‑low fuel consumption, or strict noise limits.

Use Cases: Commonly installed as main auxiliary power source on large tankers and bulk carriers for hotel services, cargo handling equipment, and emergency power; also used on offshore supply vessels where a robust, high‑output generator is required for dynamic positioning support.

Datasheet

MaraGlobe 1250kVA 400V 50Hz unverified

· 4-pole synchronous generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) suitable for large vessel auxiliary or emergency power needs
Class H insulation permits operation at elevated temperatures up to ~180 °C
Four‑pole construction provides stable voltage and frequency characteristics
Standard 400 V, 50 Hz rating matches most European‑type shipboard electrical systems

Weaknesses

IP23 enclosure offers only limited protection against water ingress; not ideal for harsh marine exposure without additional shielding
Designed for 50 Hz operation only, limiting use on vessels requiring 60 Hz power
Large rating may result in higher initial cost and greater installation space compared with lower‑capacity units
Requires a dedicated 400 V three‑phase supply; not compatible with lower voltage busbars without step‑up transformers

Typical Vessels: Container ShipCrude Oil TankerBulk CarrierCruise VesselOffshore Support Vessel

Decision Guide: Choose this generator if the vessel demands a robust 1250 kVA auxiliary power source, operates on a 400 V/50 Hz system, and can accommodate an IP23‑rated unit with Class H insulation. Avoid it when higher ingress protection (e.g., IP55 or above) is required, the ship uses 60 Hz frequency, or space and weight constraints favor a smaller rating.

Use Cases: Typically installed as part of the main auxiliary power plant on large commercial vessels, providing propulsion support, hotel loads, cargo handling equipment, and emergency power backup in compliance with SOLAS requirements.

Datasheet

MaraGlobe 1250kVA 400V 60Hz unverified

· 4-pole synchronous alternator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) suitable for heavy hotel and cargo handling loads
Robust Class H insulation allows operation at elevated temperatures
Standard 400 V/60 Hz rating matches common US‑type shipboard electrical systems
Marathon Electric reputation for reliability and long service intervals

Weaknesses

IP23 enclosure provides only splash protection; additional shielding may be required in harsh marine environments
Physical size and weight are substantial, demanding ample installation space
Limited to 400 V/60 Hz – not directly compatible with 50 Hz or higher‑voltage shipboard systems without transformers
No integrated control panel; requires separate governor and monitoring equipment

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselFloating production storage and offloading unit (FPSO)

Decision Guide: Choose if you need a high‑kVA, reliable alternator for a US‑type 400 V/60 Hz system on a large vessel and can accommodate an IP23 enclosure with additional environmental protection. Avoid if the installation requires higher ingress protection (e.g., IP55), operates in corrosive or wet deck areas without extra shielding, or mandates a 50 Hz power system.

Use Cases: Typically installed as a main auxiliary generator on large tankers and container ships to supply hotel loads, cargo handling equipment, and emergency power; also used on offshore platforms where high‑capacity, stable electricity is required for process and accommodation services.

Datasheet

MaraGlobe 1250kVA 440V 50Hz unverified

· four‑pole marine alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power rating (1250 kVA) suitable for large auxiliary loads
Class H insulation allows operation at elevated ambient temperatures
Four‑pole construction provides stable frequency and low vibration
Integrated control panel simplifies installation and monitoring
Marathon Electric’s reputation for robust, long‑life marine generators

Weaknesses

IP23 enclosure offers only limited protection against water spray; not ideal for exposed deck installations
Physical size and weight are substantial, requiring significant engine room space
Single‑frequency (50 Hz) design limits use on vessels that require dual‑frequency capability
Older design may have higher specific fuel consumption compared with modern low‑speed gensets
External cooling system is required, adding to installation complexity

Typical Vessels: Container shipCruise linerVLCC/TankerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a proven, high‑power (≈1.25 MW) generator for 440 V/50 Hz shipboard service and have sufficient engine‑room space; Class H insulation is required for hot climates; you value Marathon’s after‑sales support. Avoid if: the installation area demands higher ingress protection (IP55+), dual‑frequency capability, or strict weight/space constraints.

Use Cases: Typically installed as a main auxiliary generator on large merchant vessels to supply propulsion auxiliaries and hotel loads, or as an emergency power source on cruise ships and offshore platforms where reliable high‑capacity electricity is critical.

Datasheet

MaraGlobe 1250kVA 440V 60Hz unverified

· 4‑pole marine alternator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1250 kVA) suitable for large vessel hotel loads
H‑class insulation permits operation at elevated temperatures, enhancing reliability
Four‑pole construction provides smoother torque and lower vibration compared with two‑pole units
IP23 enclosure is adequate for protected engine‑room installations, reducing corrosion risk

Weaknesses

IP23 rating does not protect against heavy rain or direct seawater spray; unsuitable for exposed deck mounting
Fixed 60 Hz frequency limits use to markets and vessels that operate on a 60 Hz electrical system
Physical size and weight typical of high‑kVA generators may require dedicated space and structural support
No built‑in redundancy features (e.g., parallel operation) mentioned in the available data

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a high‑power (≥1250 kVA) generator for indoor or sheltered engine‑room use on a 60 Hz vessel and value Marathon Electric’s reputation for durability. Avoid if the installation requires an outdoor‑rated enclosure, operation on a 50 Hz system, or space constraints that preclude a large alternator.

Use Cases: Primary auxiliary power for propulsion support, hotel load, and emergency generation on large commercial ships and offshore platforms where a protected engine‑room environment is available.

Datasheet

MaraGlobe 1250kVA 690V 50Hz unverified

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1250 kVA) suitable for large vessel auxiliary loads
Standard marine voltage (690 V) and frequency (50 Hz) compatible with most shipboard systems
Insulation class H provides good thermal endurance for demanding operations
Four‑pole construction offers stable voltage regulation at 50 Hz
Compact IP23 enclosure protects against splashing water in typical engine room environments

Weaknesses

IP23 rating does not protect against dust ingress, limiting use in harsher environments
Relatively large physical size and weight common to high‑power generators (exact figures unavailable)
No documented built‑in redundancy; a separate backup unit would be required for critical applications
Limited to 690 V output – may require step‑down transformers for lower‑voltage distribution
Specific certification status (e.g., ABS, DNV) not confirmed

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a robust 1.25 MVA auxiliary generator at standard 690 V/50 Hz for large commercial vessels and can accommodate an IP23 enclosure. Avoid if: the installation requires higher dust protection, lower weight, or verified classification society approvals that are not documented for this model.

Use Cases: Commonly installed as a main auxiliary power source on large cargo ships, providing electricity for hotel services, cargo handling equipment, and emergency power; also used in offshore support vessels where high continuous output is required.

Datasheet

MaraGlobe 1250kVA 690V 60Hz unverified

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) suitable for large shipboard electrical loads
Class H insulation provides robust thermal tolerance and longer service life
Four‑pole construction offers smoother voltage regulation at 60 Hz
IP23 enclosure meets typical engine‑room protection requirements while allowing easy access for maintenance

Weaknesses

IP23 rating does not protect against heavy water spray or dust; additional sealing may be required in harsher environments
Designed only for 60 Hz systems, limiting use on vessels operating on 50 Hz grids
Physical size and weight are substantial, requiring dedicated space and structural support
Requires an external prime mover (diesel engine) – the unit is not a complete genset

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a reliable 1250 kVA, 690 V, 60 Hz generator with high‑temperature insulation for large vessels operating on a 60 Hz grid and have space for an IP23‑rated unit. Avoid if the vessel requires higher ingress protection (e.g., IP55), operates on 50 Hz, or has strict weight/space constraints.

Use Cases: Typically installed as the main auxiliary generator on large commercial vessels to supply propulsion‑related hotel loads, emergency power, and shore‑side power generation during port stays.

Datasheet

MaraGlobe 1500kVA 400V 50Hz unverified

· four‑pole synchronous alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power rating (1.5 MVA) suitable for large vessel hotel and propulsion loads
IP23 enclosure provides splash‑proof protection in typical marine environments
Insulation class H allows operation at elevated ambient temperatures
Four‑pole design gives stable 50 Hz output with low vibration
Marathon Electric reputation for durable shipboard generators

Weaknesses

IP23 is only splash‑proof; not dust‑tight or fully sealed against harsh weather
Physical size and weight are large for a 1500 kVA unit (exact figures unavailable)
Designed for 400 V/50 Hz systems – requires conversion for 440 V or 60 Hz installations
No built‑in redundancy; a second set is needed for critical emergency power

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 1.5 MVA, 400 V/50 Hz generator with marine‑grade splash protection and high temperature insulation for large commercial vessels. Avoid if the installation requires higher IP ratings, operation on 60 Hz grids, or space‑critical engine rooms.

Use Cases: Main auxiliary power plant for hotel loads, emergency standby generation, and support of propulsion auxiliaries on large ocean‑going ships and offshore platforms where a robust, high‑capacity generator is required.

Datasheet

MaraGlobe 1500kVA 400V 60Hz unverified

· marine synchronous alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (1500 kVA) suitable for large ship service loads
Four‑pole construction provides stable 60 Hz output with low vibration
IP23 enclosure protects against splashing water, meeting typical marine environment requirements
Insulation class H allows operation at elevated temperatures up to ~180 °C
Marathon’s proven track record for durability and long service intervals

Weaknesses

IP23 rating offers only splash protection; not dust‑tight or fully weather‑proof
Designed exclusively for 60 Hz systems – unsuitable for vessels that operate on 50 Hz grids
Physical size and weight are substantial, requiring dedicated engine room space
May require external forced‑air cooling in hot climates, adding complexity
Higher initial capital cost compared with lower‑rated or generic alternators

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10 000 TEU)Cruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if: you need a reliable 1500 kVA source at 400 V/60 Hz for main‑propulsion or heavy hotel loads on large, US‑flagged or ABS‑class vessels and have sufficient engine‑room space. Avoid if: the vessel operates on a 50 Hz power system, requires higher ingress protection (e.g., IP55), has strict weight/space limits, or you are looking for a lower‑cost, lower‑rated generator.

Use Cases: Typically installed as the primary auxiliary generator on large merchant ships, providing power for propulsion auxiliaries, cargo handling equipment, and hotel services. Also used as an emergency standby unit on cruise ships and offshore platforms where high temperature tolerance and robust construction are critical.

Datasheet

MaraGlobe 1500kVA 440V 50Hz unverified

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (1500 kVA) suitable for large vessel hotel loads
Standard 440 V / 50 Hz output matches most European‑type ship electrical systems
Four‑pole design provides stable frequency and reduced vibration
Insulation class H allows operation at elevated ambient temperatures typical on board
IP23 enclosure offers splash protection while keeping the unit relatively compact

Weaknesses

IP23 rating does not protect against dust or heavy spray, limiting installation locations
No documented IMO D‑2 or USCG type‑approval certifications for this specific model
Only 50 Hz operation; unsuitable for vessels requiring 60 Hz systems
Physical size and weight of a 1500 kVA set may demand significant engine room space
Limited publicly available performance data (fuel consumption, emissions) makes detailed comparison difficult

Typical Vessels: Bulk carrierTankerContainer shipCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a robust 1500 kVA auxiliary generator for a 440 V/50 Hz system and can accommodate an IP23 enclosure. Avoid if: the vessel requires higher ingress protection, 60 Hz operation, or verified IMO D‑2 / USCG type approval for the specific unit.

Use Cases: Commonly installed as a main hotel‑load generator on large merchant vessels, providing power for cargo handling equipment, HVAC, lighting and other critical shipboard services. Also used as an emergency standby source where high capacity is required.

Datasheet

MaraGlobe 1500kVA 440V 60Hz unverified

· 4-pole low-speed alternator

Power (kVA)

1500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) suitable for large vessel hotel loads or emergency power
Class H insulation allows reliable operation in hot engine rooms
Four‑pole design provides smoother voltage and lower vibration compared with high‑speed units
IP23 enclosure protects against dust and limited splashing, enabling installation in protected compartments
Marathon Electric offers an extensive service network and proven marine reliability

Weaknesses

IP23 rating is not fully weatherproof; unsuitable for exposed deck mounting without additional shielding
Fixed 60 Hz output limits use on vessels requiring dual‑frequency (50/60 Hz) capability
Physical size and weight are larger than high‑speed generators of comparable rating, affecting space planning
Requires dedicated cooling and ventilation systems in confined engine rooms
Higher upfront cost compared with lower‑rated or generic industrial alternators

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if: you need a reliable >1 MW auxiliary power source, have a protected installation space, and value Marathon Electric's service support. Avoid if: the generator must be deck‑mounted in harsh weather or the vessel requires dual‑frequency capability.

Use Cases: Commonly installed as main hotel‑load generators on large commercial ships, as emergency backup power units for critical systems, or as dedicated propulsion auxiliaries on offshore vessels where high temperature tolerance is required.

Datasheet

MaraGlobe 1500kVA 690V 50Hz unverified

· four‑pole synchronous generator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) suitable for medium‑to‑large ship auxiliaries
Insulation class H provides tolerance to elevated operating temperatures
Four‑pole design offers stable voltage and frequency under varying loads
IP23 enclosure protects against splashing water, meeting typical marine environment requirements
Marathon Electric reputation for robust construction and long service intervals

Weaknesses

IP23 rating does not protect against dust ingress; unsuitable for harsh dusty environments without additional shielding
Single‑frequency (50 Hz) limits use on vessels that require dual‑frequency capability (e.g., 60 Hz markets)
Physical size and weight are typical of high‑power marine generators, requiring dedicated engine room space
No integrated sound attenuation; external muffling may be required for noise‑sensitive installations
Requires a separate cooling water system; not a self‑contained unit

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if you need a reliable 1500 kVA auxiliary generator for 690 V/50 Hz systems, operate in warm climates where class H insulation is beneficial, and can accommodate an IP23‑rated enclosure. Avoid if the vessel requires dust‑tight protection (IP5X/IP6X), dual‑frequency capability, or a compact self‑cooled unit.

Use Cases: Typically installed as a main auxiliary generator supplying ship service power, hotel loads on cruise ships, and emergency power for critical systems on tankers and bulk carriers. Often paired with diesel engines in a genset set to provide continuous and peak load support during port stays and underway operations.

Datasheet

MaraGlobe 1500kVA 690V 60Hz unverified

· low-speed diesel generator set

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1500 kVA) suitable for large hotel and propulsion‑auxiliary loads
Insulation class H provides thermal robustness up to 180 °C, extending service life in harsh marine environments
Four‑pole design runs at 1800 rpm on 60 Hz, reducing mechanical wear compared with high‑speed units
IP23 enclosure offers protection against splash water and solid foreign objects larger than 12.5 mm

Weaknesses

IP23 rating does not protect against heavy rain or sea spray from all directions; additional shielding may be required in exposed locations
Physical size and weight are substantial, impacting installation space and ballast considerations on smaller vessels
Single‑frequency (60 Hz) output limits use on ships that require 50 Hz capability without a frequency converter
Higher initial capital cost compared with lower‑power or high‑speed generator alternatives

Typical Vessels: Very Large Crude Carriers (VLCC)Ultra‑Large Container Vessels (ULCV)Cruise ships and ferriesOffshore supply vessels (OSV)Floating production storage and offloading units (FPSO)

Decision Guide: Choose if: you need a robust, high‑capacity auxiliary generator for large ocean‑going ships, can accommodate an IP23 enclosure, and operate on a 60 Hz power system. Avoid if: the installation area requires higher ingress protection (e.g., IP55) or the vessel must run both 50 Hz and 60 Hz without additional conversion equipment.

Use Cases: Typically installed as the main auxiliary generator on large tankers, container ships, cruise liners, and offshore platforms to supply hotel loads, cargo handling equipment, and emergency power. Also used in shore‑power arrangements where a stable 690 V/60 Hz source is required.

Datasheet

AvK SEG

DIG 200kVA 400V 50Hz unverified

· diesel marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

200 kVA rating matches the auxiliary power needs of many medium‑size vessels
4‑pole design provides stable 50 Hz frequency under varying loads
Insulation class H allows operation in high ambient temperatures
Compact IP23 enclosure fits limited deck or engine‑room space
AvK reputation for long service intervals and proven reliability

Weaknesses

IP23 only offers splash protection; not suitable for harsh, spray‑heavy environments without additional shielding
Single‑engine configuration lacks built‑in redundancy for critical power applications
Fixed 400 V output may require step‑down or step‑up transformers on vessels with different bus voltages
No integrated sound attenuation; external mufflers are often required to meet noise regulations
Fuel consumption is higher than that of newer high‑efficiency gensets of comparable power

Typical Vessels: Container shipGeneral cargo vesselRo‑Ro ferryOffshore supply vesselSmall cruise ship

Decision Guide: Choose if: you need a reliable 200 kVA auxiliary source on a vessel with limited installation space and can accommodate an IP23 enclosure. Avoid if: the installation requires higher ingress protection (e.g., IP55) or built‑in redundancy for critical loads.

Use Cases: Commonly installed as the main auxiliary generator powering hotel services, cargo refrigeration units, navigation equipment, and emergency lighting on medium‑size merchant ships and offshore support vessels.

Datasheet

DIG 200kVA 400V 60Hz unverified

· synchronous marine generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design provides stable 60 Hz output with low vibration
IP23 enclosure offers splash protection suitable for most deck installations
Class H insulation permits operation at elevated temperatures, enhancing reliability in hot engine rooms
200 kVA rating matches the auxiliary power demand of many medium‑size cargo vessels

Weaknesses

IP23 is not fully sealed; unsuitable for harsh environments requiring higher ingress protection (e.g., IP55 or above)
Fixed 60 Hz frequency limits use on vessels that operate on 50 Hz systems without derating
No built‑in emissions control features; may need additional filtration to meet stricter IMO Tier III standards
Weight and footprint are typical of conventional generators, potentially larger than newer high‑efficiency models

Typical Vessels: TankersContainer shipsBulk carriersOffshore supply vesselsCruise ships (auxiliary power)

Decision Guide: Choose if you need a proven 200 kVA, 60 Hz generator with moderate splash protection and high‑temperature insulation for standard auxiliary power on US‑type vessels. Avoid if the installation requires higher IP rating, 50 Hz compatibility, or compliance with the latest low‑emission standards without additional equipment.

Use Cases: Commonly installed as an auxiliary generator in the engine room to supply shipboard electrical loads, support emergency power systems, and provide shore‑side power when docked. It is also used on offshore platforms where a reliable 60 Hz source is required.

Datasheet

DIG 200kVA 440V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact design suitable for limited engine‑room space
Class H insulation allows operation in high ambient temperatures
Four‑pole construction provides good voltage regulation at 50 Hz
IP23 enclosure protects against solid foreign objects, meeting typical marine auxiliary standards
AvK reputation for robust build quality and low fuel consumption

Weaknesses

IP23 rating does not protect against water ingress; additional sealing may be required in wet locations
200 kVA output limits use on larger vessels that need higher auxiliary power
Diesel engine requires regular fuel‑system maintenance and spare parts inventory
No built‑in sound attenuation; external mufflers may be needed to meet noise regulations

Typical Vessels: Coastal cargo vesselFerryOffshore support boatMedium‑size fishing vesselYacht

Decision Guide: Choose if you need a reliable 200 kVA auxiliary power source on a vessel with limited space and operate in warm climates where Class H insulation is beneficial. Avoid if the installation area is exposed to water spray requiring higher ingress protection, or if the ship’s power demand exceeds 200 kVA.

Use Cases: Commonly installed as an auxiliary generator for hotel loads, navigation equipment, cargo handling gear, and emergency power on coastal and offshore support vessels where space efficiency and temperature resilience are priorities.

Datasheet

DIG 200kVA 440V 60Hz unverified

· diesel generator set

Power (kVA)

200

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation allows higher temperature operation and longer service life in hot climates
Compact footprint for a 200 kVA rating, easing installation on medium‑size vessels
Integrated control panel with standard marine monitoring functions (frequency, voltage, oil pressure)
Proven reliability of AvK’s SEG series in offshore and harsh sea environments
Standard 440 V/60 Hz output matches most shipboard electrical systems

Weaknesses

IP23 enclosure provides only limited protection against water spray; not suitable for fully exposed deck installations
Maximum 200 kVA may be insufficient for larger vessels requiring higher redundancy or peak loads
Air‑cooled design (if applicable) can limit continuous operation in very high ambient temperatures
Weight-to-power ratio is higher than some modern compact diesel generators, affecting weight‑critical projects
Spare parts and service support may be less widespread outside Europe compared with larger OEMs

Typical Vessels: Offshore supply vesselPlatform support vesselResearch vesselSmall cruise shipFerry

Decision Guide: Choose if: you need a reliable 200 kVA auxiliary power source for medium‑size vessels, value high thermal endurance (Class H), and have space for an IP23 enclosure. Avoid if: the installation requires full splash protection, higher power output, or the lightest possible generator set.

Use Cases: Commonly installed in offshore support ships and research vessels to run hotel loads, navigation equipment, and emergency systems where a compact yet robust diesel generator is required. It is also used on small cruise liners and ferries as part of the main auxiliary power plant.

Datasheet

DIG 200kVA 690V 50Hz unverified

· marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

200 kVA output suitable for medium‑size vessels' hotel and service loads
IP23 enclosure protects against solid objects and water spray while keeping the unit compact
Class H insulation allows operation at elevated temperatures, enhancing reliability in hot climates
Four‑pole design provides stable frequency and smooth torque characteristics
Designed to meet IEC marine standards, facilitating integration with existing ship electrical systems

Weaknesses

Limited to 50 Hz; not suitable for vessels requiring 60 Hz power
IP23 rating does not protect against immersion or heavy splashing, limiting use in very wet areas
Typically requires an external diesel engine; integration cost may be higher than fully integrated gensets
Overload capability and short‑term rating are not publicly specified, requiring conservative operation
Spare parts and service support depend on regional AvK SEG dealer network

Typical Vessels: Bulk CarrierContainer ShipGeneral Cargo VesselOffshore Supply VesselFerry

Decision Guide: Choose if you need a reliable 200 kVA auxiliary power source on medium‑size merchant ships where space is limited and an IP23 enclosure provides adequate protection. Avoid if the vessel operates on 60 Hz systems, requires full watertight (IP65+) protection, or prefers an all‑in‑one generator set with integrated diesel engine.

Use Cases: Commonly installed to supply hotel loads, navigation equipment, cargo pump drives, and emergency lighting on bulk carriers, container ships, and offshore support vessels. Also used as standby power for critical systems on ferries and general cargo ships.

Datasheet

DIG 200kVA 690V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Provides up to 200 kVA of power at standard shipboard voltage (690 V) and frequency (60 Hz)
Insulation class H allows operation at higher temperatures, improving thermal robustness
Four‑pole design delivers stable voltage and frequency output under varying loads
IP23 enclosure gives splash protection suitable for typical engine‑room environments
Compact footprint compared with larger rating generators, easing installation in medium‑size vessels

Weaknesses

Rated only for 60 Hz operation; vessels requiring 50 Hz would need a frequency converter or alternative unit
IP23 provides limited protection (splash only) and is not dust‑tight, potentially needing additional sealing in harsh environments
No integrated sound attenuation mentioned; extra silencing may be required to meet crew comfort standards
Diesel fuel dependence entails regular fuel handling, storage, and maintenance requirements

Typical Vessels: TankerBulk CarrierContainer ShipGeneral Cargo VesselOffshore Supply Vessel

Decision Guide: Choose if you need a reliable 200 kVA auxiliary power source for a vessel operating on 60 Hz with limited space and can accommodate splash‑protected (IP23) equipment. Avoid if the ship requires 50 Hz output, higher environmental sealing (e.g., IP54), or built‑in noise reduction without additional silencing measures.

Use Cases: Commonly installed in the main engine room of medium‑size commercial ships to run lighting, navigation electronics, cargo handling gear, and hotel services. Also used on offshore support vessels where a compact, high‑temperature tolerant generator is advantageous.

Datasheet

DIG 315kVA 400V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (315 kVA) suitable for medium‑size vessels
Robust four‑pole construction provides stable frequency at 50 Hz
IP23 enclosure offers protection against splashing water and dust in engine rooms
Standard 400 V bus voltage matches most shipboard electrical systems, simplifying integration
AvK reputation for durability and long service intervals

Weaknesses

Relatively large footprint and weight compared with newer compact generator sets
Limited to 400 V/50 Hz; not directly compatible with vessels requiring 60 Hz or higher voltage tiers without transformer
Enclosure IP23 is only splash‑proof, not fully dust‑tight – may need additional sealing in harsh environments
No built‑in exhaust after‑treatment; compliance depends on the diesel engine coupled to the alternator
Spare parts inventory may be less common than for more widely used brands (e.g., Caterpillar, MAN)

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise liner

Decision Guide: Choose if you need a proven 315 kVA marine generator that matches standard 400 V/50 Hz shipboard systems and value AvK's long‑term reliability. Avoid if the installation requires higher voltage, 60 Hz operation, or a fully sealed (IP65+) enclosure for extreme environments.

Use Cases: Commonly installed as an auxiliary power source to supply hotel loads, cargo handling equipment, and emergency generators on medium‑size commercial vessels; also used in offshore support ships where a robust, low‑maintenance generator is required for continuous operation.

Datasheet

DIG 315kVA 400V 60Hz unverified

· diesel generator set

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H provides excellent thermal endurance for continuous operation
Compact integrated design suitable for vessels with limited engine room space
Four‑pole construction yields smoother power output and lower harmonic distortion
Standard 400 V, 60 Hz rating matches many US‑type shipboard electrical systems

Weaknesses

IP23 enclosure offers only limited protection against water ingress; not ideal for very wet or splash‑prone locations
No built‑in acoustic enclosure; additional silencing may be required for noise‑sensitive areas
Fixed 400 V output limits use on vessels that standardise on 440/660 V or 50 Hz systems

Typical Vessels: Coastal tankerContainer feederGeneral cargo shipOffshore supply vesselFerry

Decision Guide: Choose if you need a reliable 315 kVA auxiliary power source for US‑type 400 V, 60 Hz systems and have space constraints; avoid if the installation requires higher IP protection, built‑in noise control, or operation on 50 Hz networks.

Use Cases: Commonly installed as an auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on medium‑size commercial vessels operating in US waters.

Datasheet

DIG 315kVA 440V 50Hz unverified

· diesel marine generator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (315 kVA) suitable for medium‑size vessels' hotel and emergency loads
Four‑pole design provides stable frequency and low vibration
Class H insulation allows operation at elevated temperatures typical on ships
Compact, marine‑rated enclosure (IP23) fits confined engine rooms
AvK reputation for durability and ease of maintenance

Weaknesses

IP23 rating offers limited protection against water ingress; may need additional shielding in harsh environments
Single‑frequency (50 Hz only) limits use on vessels requiring dual‑frequency capability
Weight and dimensions not specified, but typical units are heavy and require adequate structural support
No built‑in redundancy; a failure requires standby unit or repair downtime
Emissions data not provided; may need after‑treatment to meet latest IMO Tier III standards

Typical Vessels: Container shipBulk carrierGeneral cargo vesselFerryOffshore supply vessel

Decision Guide: Choose if you need a reliable, mid‑range auxiliary power source for vessels with moderate space constraints and standard 50 Hz shipboard systems. Avoid if the installation demands higher ingress protection (IP55+), dual‑frequency operation, or strict low‑emission compliance without additional after‑treatment.

Use Cases: Commonly installed as a main auxiliary generator supplying hotel services, cargo handling equipment, and emergency power on medium‑size commercial vessels; also used in standby configurations for redundancy on ships with larger propulsion plants.

Datasheet

DIG 315kVA 440V 60Hz unverified

· diesel‑driven marine alternator

Power (kVA)

315

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact footprint relative to its 315 kVA rating, saving engine room space
Class H insulation permits higher operating temperatures and improves durability
Four‑pole design provides stable frequency with low harmonic distortion
Robust cast‑iron frame and IP23 enclosure meet typical marine environment requirements
Proven AvK reputation for long service intervals and straightforward maintenance

Weaknesses

IP23 protection only guards against splash; not suitable for heavily dusty or spray‑prone zones without additional shielding
Fixed 440 V output may require step‑up/step‑down gear for vessels using other voltage standards
Standard diesel engine emissions may not meet the strictest Tier 4 or IMO 2020 requirements without after‑treatment
Noise and vibration levels are typical of conventional diesel generators, requiring acoustic insulation in confined spaces
Weight and mounting dimensions can be substantial for very small craft

Typical Vessels: Offshore supply vesselFerryCoastal tankerSmall container shipCruise‑ship service deck

Decision Guide: Choose if: you need a proven, mid‑size auxiliary generator with high temperature tolerance and a compact layout for vessels operating in standard marine environments. Avoid if: the installation requires higher ingress protection (IP55+), ultra‑low emissions compliance, or a flexible voltage output range.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, cargo handling equipment, and emergency generators on offshore supply ships, ferries, and small to medium commercial vessels where space is at a premium but reliability is critical.

Datasheet

DIG 315kVA 690V 50Hz unverified

· diesel-driven marine generator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (315 kVA) suitable for medium‑to‑large vessels
Four‑pole design provides stable 50 Hz frequency at 690 V
Class H insulation allows operation in high temperature environments
IP23 enclosure offers protection against dust and limited water ingress, typical for engine rooms
AvK reputation for reliability and long service intervals

Weaknesses

Relatively large physical footprint compared with newer compact generator technologies
Standard emission level may not meet Tier III requirements without after‑treatment upgrades
IP23 rating does not protect against heavy spray or submersion, limiting placement options
Fixed voltage (690 V) may require additional step‑up/step‑down gear for vessels with different bus systems

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven, high‑power diesel generator of ~315 kVA for vessels operating on a 690 V, 50 Hz bus and value the established AvK service network. Avoid if: you require Tier III emissions compliance out‑of‑the‑box, a higher protection rating (IP≥44) for harsh weather exposure, or a more compact generator set for space‑constrained installations.

Use Cases: The DIG 315 kVA unit is typically installed as part of the main propulsion auxiliary power plant on ocean‑going cargo ships and cruise vessels, supplying shipboard services such as lighting, HVAC, and hotel loads while meeting IMO regulations for standard emission zones.

Datasheet

DIG 315kVA 690V 60Hz unverified

· 4-pole synchronous marine alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (315 kVA) suitable for medium‑large vessels' auxiliary loads
Insulation class H provides thermal robustness up to 180 °C
Standard 690 V/60 Hz rating matches US‑type ship electrical systems
Compact IP23 enclosure fits typical engine‑room spaces while protecting against dust and limited spray
AvK’s reputation for marine‑grade reliability and worldwide service network

Weaknesses

IP23 offers only limited water protection; not suitable for harsh wet environments without additional shielding
Designed for 60 Hz operation only – unsuitable where 50 Hz is required unless a frequency converter is used
No integrated automatic voltage regulator (AVR) listed, requiring an external control unit
Weight and dimensions are typical of high‑power generators, which may be a constraint in tight engine rooms
Cooling system requirements must be provided externally, adding to installation complexity

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven 315 kVA, 690 V/60 Hz generator for US‑type auxiliary power and have space for an IP23 unit with external cooling. Avoid if the installation demands higher ingress protection (e.g., IP55), 50 Hz operation, or an all‑in‑one AVR/control package.

Use Cases: Commonly installed as a main auxiliary generator on medium to large commercial vessels, providing power for hotel services, cargo handling equipment, and emergency systems; also used in shore‑power generation sets where 690 V/60 Hz is required.

Datasheet

DIG 400kVA 400V 50Hz unverified

· diesel-driven alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H suitable for elevated ambient temperatures
Four‑pole design provides stable frequency and low vibration
IP23 enclosure offers basic protection against dust and water spray while keeping the unit compact
400 kVA rating matches many medium‑size ship hotel‑load requirements without oversizing
AvK reputation for robust construction and long service intervals

Weaknesses

IP23 is not fully sealed; additional protective measures may be needed in harsh marine environments
Fixed 400 V output may require step‑up transformers on vessels that operate at higher bus voltages
Weight and footprint are typical of diesel generators of this size, which can limit installation space on smaller hulls
No built‑in exhaust after‑treatment; compliance with the latest emission tiers may need external SCR/DPF systems
Limited redundancy features (e.g., no automatic load sharing) compared to some modular generator sets

Typical Vessels: Medium‑size tankersOffshore supply vesselsCruise ship ferriesContainer feedersGeneral cargo ships

Certifications: IMO D-2 Type Approval

Decision Guide: Choose if you need a proven 400 kVA diesel generator with high temperature tolerance and a compact IP23 enclosure for medium‑size vessels. Avoid if the installation requires higher ingress protection, built‑in emission control, or modular redundancy for critical power supply.

Use Cases: Commonly installed as an auxiliary/main generator to supply hotel loads, deck machinery, and emergency power on tankers, offshore support ships, and mid‑range cruise ferries where a reliable diesel source is preferred over gas or hybrid solutions.

Datasheet

DIG 400kVA 400V 60Hz unverified

· diesel-driven synchronous marine generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 400 kVA suitable for large hotel loads
H‑class insulation allows operation at elevated temperatures, improving reliability in hot climates
Four‑pole design provides smoother torque and lower vibration compared to two‑pole units
Proven AvK brand reputation for durability and long service intervals
Standard 400 V/60 Hz output matches most shipboard electrical systems

Weaknesses

IP23 enclosure offers only limited protection against water ingress; requires sheltered installation
Physical size and weight are substantial, limiting placement in confined spaces
No built‑in redundancy features such as dual windings; maintenance must be scheduled carefully
Not optimized for low‑speed diesel engines that favor high‑efficiency, low‑rpm generators

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 400 kVA auxiliary power source with robust temperature tolerance and are able to provide a protected installation area. Avoid if the installation requires full weather‑proofing (IP66+) or weight/space constraints dominate the design.

Use Cases: Commonly installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on medium‑to‑large commercial vessels where continuous high‑power output is required.

Datasheet

DIG 400kVA 440V 50Hz unverified

· diesel marine generator

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 400 kVA suitable for medium‑size vessel hotel loads
Robust H‑class insulation allows operation at elevated ambient temperatures
IP23 enclosure provides splash protection while keeping the unit compact for engine‑room installation
Four‑pole design ensures stable 50 Hz frequency with low harmonic distortion
AvK reputation for long‑life mechanical reliability and easy maintenance

Weaknesses

IP23 rating offers only limited dust protection; not suitable for harsh, dusty environments without additional shielding
Fixed 50 Hz output limits use on vessels requiring 60 Hz power (e.g., US‑flagged ships)
Physical footprint may be large for small craft or retrofits where space is constrained
No integrated hybrid or energy‑storage option; purely diesel‑driven
Emissions compliance (Tier III) depends on optional after‑treatment kits, not standard

Typical Vessels: Bulk CarrierContainer ShipTankerOffshore Supply VesselCruise Ship

Decision Guide: Choose if you need a proven 400 kVA diesel generator for 50 Hz auxiliary power on medium‑size vessels and have adequate engine‑room space with splash‑proof protection. Avoid if the vessel requires 60 Hz supply, higher ingress protection (e.g., IP55), or a compact hybrid solution.

Use Cases: Commonly installed as the main auxiliary generator for hotel services, emergency power, and shore‑power generation on bulk carriers, tankers, container ships and offshore support vessels operating in temperate climates.

Datasheet

DIG 400kVA 440V 60Hz unverified

· diesel generator set

Power (kVA)

400

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature environments.
IP23 enclosure provides protection against water spray and limited dust ingress, suitable for typical shipboard locations.
Four‑pole design gives stable voltage and frequency output at 60 Hz.
Compact footprint relative to its 400 kVA rating, easing installation in confined engine rooms.
Proven AvK SEG brand reputation for reliability in marine applications.

Weaknesses

IP23 rating is not fully dust‑tight; additional sealing may be required in harsh offshore conditions.
Limited to 60 Hz operation, making it unsuitable for vessels standardized on 50 Hz power systems.
No integrated sound‑attenuation enclosure; extra acoustic treatment may be needed for hotel‑load applications.
Weight and mounting requirements can be significant for smaller vessels with limited space.

Typical Vessels: Cruise shipContainer vesselBulk carrierOffshore supply vesselLNG/LPG carrier

Decision Guide: Choose if: you need a robust 400 kVA auxiliary generator for a 60 Hz fleet, operating in warm climates where class H insulation is beneficial, and space allows an IP23 enclosure. Avoid if: the vessel operates on a 50 Hz system, requires a fully dust‑tight or sound‑proofed unit, or has very tight weight/space constraints.

Use Cases: Typically installed as a main auxiliary generator supplying hotel loads, cargo handling equipment, and emergency power on large commercial ships. It is also used on offshore support vessels where a reliable 400 kVA source is required for dynamic positioning systems and deck machinery.

Datasheet

DIG 400kVA 690V 50Hz unverified

· diesel-driven alternator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High 400 kVA output meets the auxiliary power needs of large commercial ships.
H‑class insulation permits operation in high ambient temperatures up to 180 °C.
IP23 enclosure provides splash protection suitable for typical deck installations.
Four‑pole construction ensures stable 50 Hz frequency across a wide load range.
AvK’s modular design simplifies installation, alignment and routine maintenance.

Weaknesses

IP23 rating does not protect against dust or heavy water ingress; unsuitable for harsh exposed locations.
Diesel engine fuel consumption is higher than newer hybrid or LNG‑based gensets.
Physical size and weight can limit placement on vessels with constrained machinery spaces.
Requires regular oil changes, filter replacements and other diesel maintenance tasks.
Single unit provides no inherent redundancy; a separate emergency set is needed for compliance.

Typical Vessels: Container ShipBulk CarrierTankerCruise ShipOffshore Supply Vessel

Decision Guide: Choose if you need a proven, high‑output diesel generator for large auxiliary power on vessels that can accommodate a deck‑mounted IP23 unit and value straightforward maintenance. Avoid if the installation requires higher ingress protection (e.g., IP55+), low‑emission hybrid/LNG solutions, or space constraints prevent a bulky genset.

Use Cases: Commonly installed as the primary auxiliary generator on tankers and container vessels, as a secondary/backup source on cruise liners, to supply deck machinery and cargo handling equipment on offshore supply ships, and as part of an emergency power arrangement for fire‑pump rooms where a 690 V bus is standard.

Datasheet

DIG 400kVA 690V 60Hz unverified

· diesel-driven marine generator set

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (400 kVA) suitable for main auxiliary loads on large ships
Insulation class H allows operation in higher ambient temperatures without derating
Four‑pole design provides stable frequency and lower vibration at 60 Hz
IP23 enclosure protects against solid objects and spray, meeting typical marine deck requirements
AvK’s reputation for robust construction and long service intervals

Weaknesses

IP23 rating does not protect against dust or heavy water ingress; harsher environments may need IP54+ enclosures
690 V output may require additional step‑down equipment for vessels standardising on lower voltages
Physical size and weight are comparable to other 400 kVA units, limiting installation in space‑constrained ships
Diesel engine coupling requires regular maintenance and fuel quality management

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if you need a proven, mid‑size auxiliary generator with high temperature insulation and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (IP54 or above) or if space/weight constraints are critical.

Use Cases: Provides primary auxiliary power for ship services such as lighting, HVAC, cargo handling equipment, and serves as emergency backup on large commercial vessels operating in temperate to warm climates.

Datasheet

DIG 500kVA 400V 50Hz unverified

· diesel‑generator set

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) provides excellent thermal endurance in marine conditions
IP23 deck‑mounted enclosure protects against dust and limited water spray
Four‑pole design enables low‑speed operation, improving fuel efficiency and engine life
Compact modular layout simplifies installation and maintenance on board
AvK/SEG brand reputation for reliability and long service intervals

Weaknesses

IP23 rating may require additional shielding in very wet or corrosive areas
Fixed 50 Hz output limits use to regions with 50 Hz power systems
500 kVA capacity can be oversized for small vessels, leading to lower load efficiency
Requires a compatible diesel engine and coupling; not a turnkey “engine‑generator” package
Limited documentation publicly available, making detailed performance verification harder

Typical Vessels: Medium‑size tankersContainer ships (up to ~5,000 TEU)Bulk carriersOffshore supply vesselsCruise ship auxiliary power systems

Decision Guide: Choose if you need a proven 500 kVA marine generator with high thermal rating and deck‑mountable IP23 enclosure for 50 Hz fleets. Avoid if your vessel operates on 60 Hz, requires higher voltage (e.g., 660 V) or needs a fully integrated engine‑generator package without custom coupling.

Use Cases: Typically installed as the main auxiliary generator supplying hotel loads, emergency power, and sometimes propulsion support on medium‑size commercial vessels. Frequently paired with diesel engines in a separate room to provide continuous, reliable electricity for navigation, cargo handling, and accommodation systems.

Datasheet

DIG 500kVA 400V 60Hz unverified

· diesel-driven marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (500 kVA) in a compact footprint suitable for auxiliary spaces
Class H insulation tolerates ambient temperatures up to 180 °C, enhancing reliability in hot climates
Four‑pole construction provides stable frequency and low vibration
IP23 enclosure is adequate for protected deck installations while allowing easy access for maintenance
AvK’s long heritage ensures proven durability and widespread support network

Weaknesses

IP23 rating offers limited protection against water ingress; a shelter or additional sealing is required in harsh weather
Diesel fuel consumption is higher than newer hybrid‑electric or gas‑turbine alternatives
Fixed 400 V/60 Hz output may require transformers or converters for vessels using other voltage standards
Maintenance intervals are typical of conventional low‑speed diesel generators, which can be more frequent than modern low‑emission units

Typical Vessels: Offshore supply vesselPlatform support vesselMedium‑size tankerContainer ship (auxiliary power)Cruise ship hotel load generator

Decision Guide: Choose this unit when you need a reliable, high‑temperature tolerant 500 kVA diesel generator that fits in limited auxiliary spaces and benefits from AvK’s global service network. Avoid it if the installation requires full weatherproofing (IP66+), ultra‑low emissions, or integration with hybrid/electric propulsion systems.

Use Cases: Commonly installed as the main auxiliary generator on offshore supply vessels for cargo handling equipment, as an emergency power source on tankers, and to supply hotel loads on cruise ships where a stable 400 V/60 Hz supply is required. It is also used in retrofit projects where space constraints demand a compact yet powerful diesel genset.

Datasheet

DIG 500kVA 440V 50Hz unverified

· diesel‑driven alternator

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (500 kVA) in a compact integrated package
Class H insulation allows operation at elevated temperatures
4‑pole design provides stable 50 Hz frequency at standard marine speeds
IP23 enclosure offers splash protection suitable for typical engine rooms
AvK reputation for robust, low‑maintenance marine generators

Weaknesses

IP23 rating does not protect against dust ingress or heavy spray
Fixed 50 Hz output limits use on vessels requiring dual‑frequency capability
Relatively large footprint compared with newer high‑speed generator sets
May require a dedicated fuel system and cooling arrangement
Initial capital cost can be higher than comparable off‑the‑shelf units

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven, mid‑size auxiliary generator with high temperature tolerance and compact integration for standard 50 Hz marine applications. Avoid if the installation demands higher ingress protection (e.g., IP54), dual‑frequency capability, or the smallest possible footprint.

Use Cases: Provides shipboard hotel power, emergency standby generation, start‑up of main propulsion engines, and supports auxiliary loads such as cargo handling equipment on medium to large commercial vessels.

Datasheet

DIG 500kVA 440V 60Hz unverified

Power (kVA)

500

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Rated 500 kVA with Class H insulation, allowing operation in high ambient temperatures
Robust IP23 enclosure provides protection against dust and spray while keeping the unit compact
Four‑pole design gives good low‑speed torque and stable frequency output at 60 Hz
Standardized parts and long service history simplify spares management and maintenance

Weaknesses

IP23 rating does not protect against heavy splashing or immersion, limiting placement in harsh weather decks
Fixed 440 V output may require additional transformers for vessels using other voltage levels
Older control architecture compared with newer electronically controlled gensets – fewer diagnostic features
Weight and footprint are larger than some modern compact generators of similar rating

Typical Vessels: Container shipBulk carrierTankerCruise linerGeneral cargo vessel

Decision Guide: Choose if you need a proven, high‑temperature capable 500 kVA generator for a 60 Hz system and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (IP55/65), integrated digital control, or a more compact footprint.

Use Cases: Commonly installed as auxiliary power for hotel loads, cargo handling equipment, and emergency generators on large commercial ships that operate on a 60 Hz electrical network.

Datasheet

DIG 500kVA 690V 50Hz unverified

· diesel-driven synchronous marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) allows operation at elevated temperatures without derating.
Compact IP23 enclosure suitable for confined engine‑room spaces.
Four‑pole design provides stable 50 Hz output with good overload capability.
Integrated control system compatible with common ship automation platforms.
Robust construction typical of AvK marine units, offering long service intervals.

Weaknesses

IP23 rating offers limited protection against dust and water ingress; not suitable for harsh external environments.
Noise attenuation is not built‑in, requiring additional silencing measures on noisy vessels.
Weight and dimensions are comparable to other 500 kVA units, so no advantage in weight‑critical applications.
Single‑unit configuration provides less redundancy than twin‑generator arrangements.
Requires standard marine diesel fuel; alternative fuels (e.g., LNG) not supported.

Typical Vessels: Medium‑size tankersContainer ships (up to 5,000 TEU)Bulk carriersOffshore supply vesselsCruise ships (auxiliary power)

Decision Guide: Choose if: you need a reliable 500 kVA generator for a vessel with limited engine‑room space, require high temperature tolerance, and can accommodate an IP23 enclosure. Avoid if: the installation demands higher ingress protection (IP55+), strict noise limits without extra silencing, or weight/space constraints that favor lighter alternatives.

Use Cases: The DIG 500kVA is typically installed as the main propulsion auxiliary generator on medium‑size commercial vessels, providing steady three‑phase power for hotel loads, cargo handling equipment, and emergency systems. It is also used in offshore support ships where robust, low‑maintenance power sources are essential.

Datasheet

DIG 500kVA 690V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class (H) provides excellent thermal endurance for continuous operation.
IP23 enclosure offers splash protection suitable for deck‑mounted installations without excessive sealing requirements.
4‑pole design ensures stable voltage and frequency output under varying load conditions.
500 kVA rating fits the power demand of medium‑size vessels while leaving margin for auxiliary loads.
Standard 690 V, 60 Hz interface matches common marine electrical distribution systems in US‑flagged ships.

Weaknesses

IP23 protection is not dust‑tight; unsuitable for harsh, dusty engine‑room environments without additional shielding.
Limited to 60 Hz operation, making it less attractive for vessels operating primarily on 50 Hz grids.
Physical dimensions and weight are unspecified, potentially complicating retrofits where space is constrained.
Conventional diesel drive may have lower fuel efficiency compared with newer high‑efficiency or hybrid generator sets.
No documented advanced emission control (e.g., SCR or EGR) – may not meet the strictest IMO Tier III requirements without after‑treatment.

Typical Vessels: Product TankerContainer ShipBulk CarrierCruise VesselOffshore Supply Vessel

Decision Guide: Choose if: you need a proven, mid‑size 500 kVA generator for 690 V/60 Hz systems on vessels where splash protection (IP23) is sufficient and high thermal endurance is required. Avoid if: the installation demands dust‑tight enclosures, operates on a 50 Hz grid, or must meet the latest IMO Tier III emission standards without additional after‑treatment.

Use Cases: The DIG 500kVA is typically installed as the main auxiliary power source on medium‑size merchant ships, supplying shipboard services such as cargo handling equipment, hotel loads, and emergency generators. It is also used on offshore support vessels where a reliable 690 V distribution network is already in place.

Datasheet

DIG 630kVA 400V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (630 kVA) suitable for medium‑size vessels
Robust four‑pole construction provides stable frequency at 50 Hz
Compact IP23 enclosure saves space in engine rooms
AvK’s proven reliability and long service intervals
Standard 400 V output matches most shipboard distribution systems

Weaknesses

IP23 rating offers limited protection against water spray; not suitable for harsh wet‑deck installations
Fixed 400 V output may require step‑up transformers for vessels that operate on higher voltages
Diesel fuel dependence adds to operational cost and emissions compared with hybrid or LNG options
Physical size and weight are typical of mid‑size generators, limiting use in very space‑constrained applications

Typical Vessels: Container shipBulk carrierGeneral cargo vesselCruise liner (auxiliary power)Offshore supply vessel

Decision Guide: Choose if: you need a reliable mid‑size generator with standard 400 V/50 Hz output for vessels up to ~30,000 gt and have space for a conventional diesel alternator. Avoid if: the installation requires higher voltage (e.g., 660 V), explosion‑proof or fully watertight enclosure, or you are targeting low‑emission hybrid power solutions.

Use Cases: Typically installed as the main auxiliary generator on medium‑size cargo ships and cruise vessels, providing continuous shipboard power for propulsion auxiliaries, hotel services, and emergency loads. Also used as a standby unit on offshore platforms where proven diesel reliability is required.

Datasheet

DIG 630kVA 400V 60Hz unverified

· diesel generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (630 kVA) suitable for large hotel loads or emergency power
Four‑pole design provides stable frequency and low vibration
Class H insulation allows operation at elevated temperatures
IP23 enclosure protects against splashing water while keeping the unit compact

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh dusty or spray‑heavy environments
Single‑frequency (60 Hz) limits use on vessels that require dual‑frequency capability
Typical diesel generator emissions may require additional after‑treatment to meet strict IMO Tier III zones
Physical size and weight are substantial compared with newer lightweight alternatives

Typical Vessels: Cruise shipOffshore support vesselContainer shipTankerLarge ferries

Decision Guide: Choose if: you need a proven, high‑output 630 kVA generator for 400 V/60 Hz systems on vessels operating in regions where 60 Hz is standard and space permits an IP23 unit. Avoid if: the installation requires higher ingress protection (e.g., IP55), dual‑frequency capability, or you must meet the latest low‑emission Tier III requirements without additional exhaust treatment.

Use Cases: Typically installed as a main auxiliary generator for hotel loads, emergency power supply, or as a dedicated generator for cargo handling equipment on large commercial vessels operating in North America and other 60 Hz regions.

Datasheet

DIG 630kVA 440V 50Hz unverified

· Marine diesel generator set

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 630 kVA suitable for medium‑size ship service loads
Robust cast‑iron frame and H‑class insulation allow operation in elevated ambient temperatures
Compact IP23 enclosure saves space while providing basic protection against splashing water
Four‑pole design ensures stable frequency and low vibration at 50 Hz
AvK’s modular construction simplifies routine maintenance and part replacement

Weaknesses

Weight of the cast‑iron unit can be a limitation for vessels with strict weight budgets
IP23 rating offers only limited protection; additional shielding may be required in harsh spray zones
Fixed 440 V/50 Hz output limits flexibility for ships that operate on 60 Hz or higher voltage systems
Single‑generator configuration provides no inherent redundancy; a second set is needed for critical applications

Typical Vessels: Offshore Supply Vessel (OSV)Platform Supply Vessel (PSV)Small to medium Container Ship (up to ~10,000 DWT)Product Tanker (coastal)Cruise ship auxiliary power unit

Decision Guide: Choose if you need a proven, mid‑range marine generator with solid construction, moderate space requirements and reliable 50 Hz operation. Avoid if vessel design demands higher voltage, 60 Hz supply, ultra‑light weight, or built‑in redundancy without adding a second set.

Use Cases: Commonly installed as the main auxiliary generator on offshore support vessels to power hotel loads, cargo handling equipment, and emergency systems; also used on smaller container ships and cruise liners for steady shipboard electricity when shore power is unavailable.

Datasheet

DIG 630kVA 440V 60Hz unverified

· diesel-driven marine alternator

Power (kVA)

630

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation at elevated temperatures
Compact IP23 enclosure suitable for typical engine room environments
Four‑pole design provides stable 60 Hz output with low vibration
AvK reputation for robust construction and long service intervals
Adequate power rating (630 kVA) for hotel loads on many merchant ships

Weaknesses

IP23 protection only guards against splashing, not dust or water ingress in harsher conditions
Fixed 440 V output may require step‑down transformers for vessels with different distribution voltages
Designed for 60 Hz markets; unsuitable for vessels operating on 50 Hz systems without conversion
Weight and footprint are typical of mid‑size generators, limiting installation in very tight spaces
May lack integrated emission control packages required by the latest IMO Tier III standards

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselFerry

Decision Guide: Choose if: you need a proven 630 kVA auxiliary generator for a 60 Hz merchant vessel, space is moderate and splash‑proof protection (IP23) suffices, and you value AvK's service network. Avoid if: the installation requires higher ingress protection (e.g., IP65), operation on 50 Hz systems, or compliance with the latest IMO Tier III emission limits without additional after‑treatment.

Use Cases: Typically installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on medium‑size commercial ships. It is also used in offshore support vessels where reliable mid‑range power is essential for dynamic positioning and crew accommodations.

Datasheet

DIG 630kVA 690V 50Hz unverified

· synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (630 kVA) suitable for large auxiliary power needs
Class H insulation allows operation at elevated temperatures, reducing cooling requirements
Standard 4‑pole design matches common 1500 rpm diesel prime movers at 50 Hz
IP23 enclosure provides basic protection against solid objects and water spray typical of engine rooms
Proven AvK engineering reputation for reliability in harsh marine environments

Weaknesses

IP23 rating offers limited ingress protection; not suitable for highly corrosive or splash‑prone areas without additional shielding
Large physical size and weight common to high‑power generators may limit installation space on smaller vessels
Fixed 690 V output may require step‑up transformers for ships standardized on higher bus voltages
Maintenance of brushless exciter system still required at scheduled intervals
No built‑in redundancy; a separate standby unit is needed for critical applications

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>10,000 TEU)Cruise linerOffshore supply vesselFloating production storage and offloading (FPSO) unit

Decision Guide: Choose if you need a proven 630 kVA synchronous generator with class H insulation for vessels that already operate on a 690 V bus and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), a more compact unit, or direct output at voltages above 690 V without additional transformers.

Use Cases: Typically installed as a main auxiliary generator on large merchant ships to supply hotel loads, cargo handling equipment, and emergency power. Also used on offshore platforms where reliable high‑capacity generation is required for both normal operation and redundancy schemes.

Datasheet

DIG 630kVA 690V 60Hz unverified

· diesel generator set

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 630 kVA in a compact, modular package suitable for engine‑room installation
Robust IP23 enclosure provides splash protection while allowing easy access for maintenance
Insulation class H permits operation at elevated temperatures, enhancing reliability in hot climates
Four‑pole design ensures stable frequency and low vibration under load variations
Proven AvK (now Caterpillar Marine) reputation for long service life and straightforward spare‑parts logistics

Weaknesses

IP23 rating is only splash‑proof; not suitable for harsh dusty or corrosive environments without additional protection
Fixed 690 V output may require step‑up transformers on vessels that operate at higher bus voltages (e.g., 11 kV)
Diesel engine emissions may need after‑treatment to meet IMO Tier III in emission control areas
Physical size and weight are significant compared with newer compact gas or hybrid generators, limiting use on small vessels
Standard maintenance intervals typical of diesel gensets; not a low‑maintenance solution like oil‑free screw compressors

Typical Vessels: Bulk CarrierContainer ShipTankerGeneral Cargo VesselOffshore Supply VesselCruise Ship (auxiliary power)

Decision Guide: Choose if you need a reliable 630 kVA main or auxiliary generator with proven AvK durability, operate on a 690 V bus, and value easy maintenance access. Avoid if the vessel requires higher voltage output without transformers, operates primarily in emission‑control areas without ready after‑treatment, or space/weight constraints favor newer compact gas or hybrid solutions.

Use Cases: Typically installed as part of the main power plant on medium‑size cargo vessels to supply shipboard electricity and emergency power; also used as a standby generator on larger ships where redundancy is required.

Datasheet

DIG 800kVA 400V 50Hz unverified

· Four‑pole synchronous generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 800 kVA suitable for medium‑size vessel hotel loads
Class H insulation allows operation in high ambient temperature environments
Standard four‑pole design runs at 1500 rpm on 50 Hz, simplifying coupling to common prime movers
IP23 enclosure provides basic protection against dust and spray while allowing easy access for maintenance
Widely used in European‑spec vessels, ensuring compatibility with 400 V/50 Hz distribution systems

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; additional shielding may be required in harsh weather
No inherent 60 Hz version, limiting use on North‑American spec ships without rewiring
Limited information on integrated control/monitoring package – may need separate automation system
Physical dimensions and weight are not disclosed, requiring detailed layout verification before installation
Paralleling capability is not specified, which could affect redundancy planning

Typical Vessels: Container shipCruise linerRo‑Ro vesselOffshore supply vesselLarge tanker

Decision Guide: Choose if you need a reliable 800 kVA, 400 V/50 Hz auxiliary generator for European‑spec vessels and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), 60 Hz operation, or built‑in advanced control systems.

Datasheet

DIG 800kVA 400V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (800 kVA) suitable for substantial hotel and propulsion loads
Class H insulation provides good thermal endurance and reliability
Standard 400 V three‑phase, 60 Hz matches US‑type shipboard electrical systems
Four‑pole design offers stable voltage regulation under varying load

Weaknesses

IP23 enclosure only protects against splashing; not dust‑tight or suitable for harsh offshore exposure
Limited to 60 Hz operation, unsuitable for vessels requiring 50 Hz power grids
Physical size and weight typical of an 800 kVA unit may restrict installation in tight engine rooms
No publicly confirmed emissions or type‑approval certifications for this exact model

Typical Vessels: Product tankerMedium‑size bulk carrierOffshore supply vesselCruise ship (mid‑range)Large fishing vessel

Decision Guide: Choose if you need a robust 800 kVA, 400 V, 60 Hz generator with standard class H insulation for US‑type vessels and have adequate space for an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), 50 Hz operation, or strict emissions/type‑approval compliance that is not yet verified.

Use Cases: Typically installed as a main auxiliary generator supplying hotel services, cargo handling equipment, and emergency power on medium‑size commercial vessels operating in US waters. Also used on offshore support ships where a reliable 60 Hz supply is mandatory.

Datasheet

DIG 800kVA 440V 50Hz unverified

· low-speed diesel generator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation in elevated temperature zones.
Standard 440 V/50 Hz output matches most international shipboard electrical systems.
Proven AvK engineering reputation for reliability and long service life.
Modular design simplifies installation, alignment and routine maintenance.
Certified by major classification societies (DNV, ABS) for marine use.

Weaknesses

IP23 enclosure provides limited water‑ingress protection; additional sealing may be required in heavy spray areas.
Physical size and weight are larger than newer compact generator designs.
Designed for 50 Hz only – not suitable for vessels operating on a 60 Hz grid.
Specific fuel consumption is higher than the latest high‑efficiency low‑speed engines.
Noise level can be significant without extra acoustic insulation.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vesselNaval auxiliary

Certifications: DNVABSIMO Type Approval (D‑2)

Decision Guide: Choose if: you need a reliable 800 kVA, 440 V/50 Hz power source for large cargo or passenger vessels, operate in regions with 50 Hz grids, and require DNV/ABS approved equipment that can be serviced by standard marine workshops. Avoid if: the vessel is limited in space, requires 60 Hz output, has strict noise‑abatement constraints, or you are targeting the lowest possible fuel consumption with newer high‑efficiency generators.

Use Cases: Typically installed as a main auxiliary generator on large merchant ships to supply propulsion auxiliaries and hotel loads, as an emergency power source on tankers, or as primary hotel power on cruise vessels and offshore support ships where robust, certified generation is mandatory.

Datasheet

DIG 800kVA 440V 60Hz unverified

· diesel-driven alternator

Power (kVA)

800

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (800 kVA) suitable for large auxiliary power needs
Four‑pole construction provides stable 60 Hz frequency under varying loads
IP23 splash‑proof enclosure offers basic protection against water and dust in typical marine environments
Insulation class H allows operation at elevated temperatures up to ~180 °C
Proven AvK engineering reputation for durability and low maintenance

Weaknesses

IP23 rating is not fully sealed; additional shielding may be required in harsh or wet areas
Large physical size and weight can limit installation on smaller vessels or confined engine rooms
Fixed 60 Hz output – not suitable for regions or vessels that require 50 Hz power
No integrated parallel‑operation feature documented, limiting redundancy options
Higher initial cost compared with lower‑rated generators

Typical Vessels: Container ShipBulk CarrierTankerCruise ShipOffshore Supply Vessel

Decision Guide: Choose if you need a reliable 800 kVA, 440 V, 60 Hz generator with robust construction and can accommodate an IP23 enclosure. Avoid if the vessel requires higher ingress protection (e.g., IP55+), 50 Hz operation, or has severe space/weight constraints.

Use Cases: Main auxiliary power generation for large commercial vessels, emergency standby power, and shore‑power conversion units where a high‑capacity, diesel‑driven generator is required.

Datasheet

DIG 800kVA 690V 50Hz unverified

· diesel generator set

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (800 kVA) suitable for large vessel auxiliary systems
Four‑pole design provides stable 50 Hz frequency under varying loads
Insulation class H allows operation at elevated temperatures, enhancing durability
IP23 enclosure is robust for deck‑mounted installations while allowing easy access for maintenance
AvK’s modular construction simplifies on‑site replacement and spare‑part logistics

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for harsh wet environments without additional shielding
Physical size and weight are substantial, requiring dedicated engine room space
Fuel consumption can be relatively high at part‑load operation compared with newer low‑speed engines
Standard configuration may lack integrated exhaust after‑treatment required for the latest emission control zones
Requires an external cooling system; not a self‑contained unit

Typical Vessels: Very Large Crude Carriers (VLCC)Container ships (>10,000 TEU)Cruise linersOffshore supply vesselsLNG carriers

Decision Guide: Choose if you need a proven high‑power auxiliary generator for large commercial vessels and have space for a deck‑mounted unit with standard cooling and exhaust arrangements. Avoid if the installation area demands higher ingress protection (e.g., IP55), strict low‑emission requirements, or very limited engine‑room volume.

Use Cases: Typically installed as the main service generator on large tankers, container ships, and cruise vessels to supply shipboard electricity for propulsion auxiliaries, hotel loads, and cargo handling equipment. Also used as an emergency power source on offshore platforms where high reliability is mandatory.

Datasheet

DIG 800kVA 690V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (800 kVA) suitable for large vessels' hotel and auxiliary loads
Class H insulation tolerates ambient temperatures up to ~180 °C, enhancing reliability in warm climates
Compact IP23 deck‑mounted design simplifies installation and integration with existing machinery spaces
Four‑pole construction provides stable 60 Hz output and good voltage regulation

Weaknesses

IP23 protection may be insufficient for exposed spray zones; higher IP rating required in harsh environments
Single frequency (60 Hz) only, limiting use on vessels that need dual 50/60 Hz capability
Diesel fuel consumption is relatively high compared with newer LNG‑fuel or hybrid generator sets
Typical noise and vibration levels of large diesel gensets may require additional mitigation measures

Typical Vessels: Container ShipCrude Oil TankerLiquefied Gas CarrierCruise ShipOffshore Supply Vessel

Decision Guide: Choose if you need a reliable 800 kVA auxiliary power source for a large vessel operating in temperate climates, and the installation area can accommodate an IP23 deck‑mounted unit. Avoid if the ship requires higher ingress protection (IP55/65), dual‑frequency capability, or lower emissions/fuel consumption solutions such as LNG‑fuel or hybrid generators.

Use Cases: Provides main hotel power, emergency generator set, and auxiliary propulsion support on large merchant vessels; commonly installed in engine rooms or deck compartments to supply electrical loads ranging from cargo handling equipment to accommodation services.

Datasheet

DIG 1000kVA 400V 50Hz unverified

· Four-pole diesel generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (1000 kVA) suitable for medium‑size vessels
Four‑pole construction provides smooth voltage regulation at 50 Hz
Insulation class H allows operation in elevated ambient temperatures
Compact IP23 enclosure eases installation in confined engine rooms
AvK brand reputation for reliability and low maintenance

Weaknesses

IP23 rating only protects against splashing water, not heavy spray or dust
Fixed 400 V/50 Hz output limits use on vessels requiring 60 Hz or different voltages
Physical size typical of 1 MW generators can be a space constraint
No built‑in automatic load sharing; external control needed for parallel operation

Typical Vessels: Product TankerLNG CarrierOffshore Supply VesselCruise ShipContainer Feeder

Decision Guide: Choose if you need a reliable 1 MW, 400 V/50 Hz power source for vessels operating in moderate marine climates and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), operation on 60 Hz systems, or strict weight/space constraints.

Use Cases: Typically installed as the main service generator on medium‑size commercial ships, providing power for propulsion auxiliaries, hotel loads, and emergency supply; also used as a standby generator in offshore platforms where high temperature tolerance is required.

Datasheet

DIG 1000kVA 400V 60Hz unverified

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Very high power rating (1 MW) suitable for large vessels
Class H insulation tolerates elevated operating temperatures
Four‑pole construction provides stable frequency and low ripple
Standard 400 V/60 Hz output matches US‑type shipboard distribution
IP23 enclosure offers basic protection against dust and spray

Weaknesses

IP23 rating is not fully watertight; higher ingress protection may be required in harsh marine environments
Large physical size and weight demand dedicated engine room space
Fixed 60 Hz frequency limits use on vessels that operate on 50 Hz systems
Requires an external prime‑mover (diesel engine) – not a self‑contained genset
Higher cooling requirements due to Class H insulation

Typical Vessels: Very Large Crude Carrier (VLCC)Container ship (>8,000 TEU)Cruise linerOffshore supply vesselFloating production storage and offloading unit (FPSO)

Decision Guide: Choose if the vessel needs a robust >800 kVA generator, operates on a 60 Hz electrical system, and has sufficient engine‑room space for a large unit with basic spray protection. Avoid if the ship uses a 50 Hz network, requires higher ingress protection (IP44+), or has limited installation volume.

Use Cases: Primary main‑propulsion auxiliary power on large tankers and cruise ships; emergency standby generation for critical navigation and safety systems; high‑capacity shore‑power conversion on offshore platforms.

Datasheet

DIG 1000kVA 440V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (1 MW) suitable for large hotel loads on ocean‑going vessels
Insulation class H provides tolerance to elevated operating temperatures
Four‑pole construction delivers stable frequency and reduced vibration
Standard 440 V/50 Hz rating matches most existing marine electrical systems
IP23 enclosure allows deck mounting while protecting against solid objects and spray

Weaknesses

IP23 protection is not fully sealed; additional shielding may be required in harsh sea‑spray environments
Large physical footprint compared with newer compact genset designs
Single‑frequency (50 Hz) only – not suitable for vessels requiring dual‑frequency capability
Maintenance intensity typical of conventional diesel generators (oil changes, brush inspection)
Fuel consumption higher than modern low‑speed or hybrid alternatives

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierBulk carrier

Decision Guide: Choose if you need a proven, high‑power auxiliary generator that matches standard 440 V/50 Hz marine distribution and can tolerate elevated temperatures. Avoid if space is at a premium, dual‑frequency capability or higher ingress protection (IP≥4) is required, or if you are targeting the lowest possible fuel consumption with newer low‑speed or hybrid gensets.

Use Cases: Installed as part of the main auxiliary power plant on large commercial vessels to supply hotel services, cargo handling equipment, navigation and communication systems, and to serve as an emergency generator under ISO 8528‑1 compliance.

Datasheet

DIG 1000kVA 440V 60Hz unverified

· diesel‑driven synchronous generator

Power (kVA)

1000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (1000 kVA) suitable for large ship service loads
Class H insulation allows operation in high ambient temperatures
Four‑pole design provides stable 1800 rpm speed at 60 Hz, reducing vibration
Proven AvK brand reputation for reliability and long service life
IP23 enclosure offers basic splash protection while keeping maintenance access easy

Weaknesses

IP23 rating does not protect against heavy water ingress or dust; unsuitable for harsh offshore exposure without additional shielding
Only available at 60 Hz, limiting use on vessels that operate on 50 Hz systems without frequency conversion
Physical size and weight are typical of a 1000 kVA unit, requiring substantial engine room space
No integrated sound‑attenuation enclosure; external mufflers may be required for noise compliance

Typical Vessels: Cruise shipContainer vesselTankerLNG carrierOffshore supply vesselNaval auxiliary

Decision Guide: Choose if you need a robust 1000 kVA generator for 60 Hz operation, operate in hot climates where Class H insulation is beneficial, and have sufficient engine‑room space. Avoid if the installation requires higher ingress protection (IP66/67), must run on 50 Hz without converters, or weight/space constraints are critical.

Use Cases: Main propulsion auxiliary power plant on large commercial ships, emergency backup generation for critical systems, shore‑power conversion units where a high‑capacity, reliable generator is required.

Datasheet

DIG 1000kVA 690V 50Hz unverified

· high‑capacity marine alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) suitable for large ship hotel and propulsion loads
Robust IP23 enclosure tolerates typical engine‑room environments
Insulation class H allows operation at elevated temperatures
Four‑pole design provides stable 50 Hz frequency
Proven AvK brand reputation for reliability in marine applications

Weaknesses

Large physical size and weight may limit installation space on smaller vessels
Standard IP23 rating offers limited protection against water ingress compared with higher IP ratings
Requires regular maintenance typical of high‑output alternators (brushes, bearings)
Fixed 690 V output reduces flexibility for vessels using other voltage standards

Typical Vessels: Crude oil tankerContainer shipBulk carrierOffshore supply vesselCruise liner

Decision Guide: Choose if: you need a proven, high‑capacity 1 MVA alternator for main or emergency power on large vessels and have sufficient engine‑room space. Avoid if: weight, footprint, or higher IP protection are critical, or if the vessel operates on a different voltage system.

Use Cases: Commonly installed as a primary auxiliary generator on tankers and container ships to supply hotel loads, cargo handling equipment, and emergency power; also used in offshore support vessels where robust, high‑output generation is required.

Datasheet

DIG 1000kVA 690V 60Hz unverified

· diesel‑driven marine alternator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) in a compact footprint suitable for large vessels
Class H insulation allows operation at elevated temperatures typical of engine rooms
Four‑pole construction provides smooth, low‑ripple voltage for sensitive hotel loads
Proven AvK engineering reputation for durability and long service intervals

Weaknesses

IP23 enclosure offers only splash protection; not suitable for harsh wash‑down areas without additional shielding
Emissions compliance may require retrofit of after‑treatment to meet Tier III standards in emission control areas
Designed for 60 Hz operation only, limiting use on vessels that standardise on 50 Hz systems
Noise and vibration levels are higher than some newer low‑speed generator sets

Typical Vessels: Container shipBulk carrierCruise linerOffshore supply vesselLNG carrier (auxiliary power)

Decision Guide: Choose if you need a reliable 1 MW auxiliary generator for a 60 Hz fleet, value proven AvK build quality and can accommodate an IP23 enclosure. Avoid if the vessel operates in strict emission control areas without planned after‑treatment, requires full dust‑tight protection, or runs on a 50 Hz electrical system.

Datasheet

DIG 1250kVA 400V 50Hz unverified

· diesel-driven synchronous generator set

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) in a compact footprint suitable for medium‑size vessels
Class H insulation allows operation at elevated temperatures, enhancing reliability in harsh marine environments
IP23 enclosure provides protection against splashing water and dust while allowing easy access for maintenance
Four‑pole design ensures stable 50 Hz frequency with low vibration levels
Proven AvK brand reputation for durability and long service intervals

Weaknesses

Requires diesel fuel storage and associated handling infrastructure
Physical size and weight may be limiting on vessels with tight machinery spaces
Fixed 400 V output; not directly compatible with ships that standardise on higher voltages (e.g., 660 V) without transformers
Maintenance‑intensive compared to newer oil‑free or hybrid generator technologies
Enclosure IP23 is not fully weather‑tight, limiting placement in exposed locations

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 1.25 MVA auxiliary power source on a 400 V, 50 Hz system and have sufficient deck space for an IP23‑rated unit. Avoid if your vessel operates on 60 Hz, requires higher voltage output without transformers, or prioritises ultra‑compact or hybrid generator solutions.

Use Cases: Commonly installed as main auxiliary generators supplying hotel loads, emergency power, and dynamic positioning support on medium to large commercial vessels operating in regions with 50 Hz mains standards.

Datasheet

DIG 1250kVA 400V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1250 kVA suitable for large commercial vessels
IP23 enclosure provides protection against dust and limited water ingress, meeting typical marine environment requirements
Class H insulation allows operation at elevated temperatures up to ~180 °C, enhancing reliability in hot climates
Four‑pole design ensures stable 60 Hz output with low vibration
Standard 400 V bus voltage aligns with most US‑registered and many Asian vessel electrical architectures

Weaknesses

Limited to 400 V; vessels requiring 440 V or other bus configurations would need additional transformers
IP23 rating offers only limited water protection; not ideal for harsh spray zones where higher IP ratings are preferred
Designed for 60 Hz operation, making it unsuitable for ships operating on 50 Hz power systems without frequency conversion
Physical size and weight typical of a 1250 kVA diesel generator may demand substantial engine room space and robust mounting
May require auxiliary cooling equipment in very high ambient temperature regions

Typical Vessels: TankersContainer shipsBulk carriersCruise linersOffshore supply vessels

Decision Guide: Choose if: you need a reliable 1.25 MVA auxiliary power source for a 400 V, 60 Hz ship electrical system and can accommodate an IP23‑rated engine room installation. Avoid if: the vessel operates on a 50 Hz grid, requires higher ingress protection (IP55+), or has strict space/weight constraints that favor more compact generator sets.

Use Cases: Commonly installed as the main auxiliary generator supplying hotel loads, cargo handling equipment, and navigation systems on large commercial vessels; also used as an emergency generator where redundancy is required.

Datasheet

DIG 1250kVA 440V 50Hz unverified

· diesel generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 1250 kVA suitable for medium‑size vessels
Class H insulation permits operation at elevated temperatures, improving reliability in hot engine rooms
Four‑pole design provides stable 50 Hz frequency at 1500 rpm
IP23 enclosure offers protection against splashing water and dust typical of marine environments
AvK’s reputation for durable construction and long service intervals

Weaknesses

IP23 rating is not fully sealed; may require additional protection in heavily spray‑prone areas
Relatively large footprint and weight compared with newer compact generator sets
Fixed 50 Hz output only – not suitable for vessels requiring dual‑frequency (50/60 Hz) capability
Standard diesel engine drive can generate higher vibration levels than low‑speed or hybrid alternatives

Typical Vessels: Container shipBulk carrierGeneral cargo vesselCruise liner (auxiliary power)Offshore supply vessel

Decision Guide: Choose if you need a proven, high‑power diesel generator for vessels operating primarily at 50 Hz and can accommodate a splash‑proof (IP23) enclosure. Avoid if the installation demands fully sealed equipment, dual‑frequency capability, or a compact low‑vibration solution.

Use Cases: Commonly installed as main or auxiliary generators on medium to large commercial ships where reliable, continuous power is critical – e.g., powering propulsion auxiliaries, hotel loads, and emergency systems in container, bulk and cruise vessels.

Datasheet

DIG 1250kVA 440V 60Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1250

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) suitable for large auxiliary loads
Class H insulation allows operation at elevated temperatures
Four‑pole construction provides stable frequency and lower vibration
Compact, deck‑mountable IP23 enclosure simplifies installation in protected spaces
AvK’s reputation for robust, low‑maintenance marine generators

Weaknesses

IP23 rating offers limited protection against water ingress; additional shielding may be required for exposed locations
Designed for 60 Hz only, limiting use on vessels operating on 50 Hz power systems
Physical size and weight are substantial for a 1250 kVA unit (exact figures not provided)
Fuel consumption can be relatively high when operated at low load levels

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierLarge bulk carrier

Decision Guide: Choose this generator if you need a reliable 1250 kVA auxiliary source for a 60 Hz vessel, value proven AvK durability, and can accommodate an IP23 protected installation. Avoid it if the vessel requires higher ingress protection (e.g., IP55), operates on a 50 Hz system, or has strict weight/space constraints that demand a lighter unit.

Use Cases: Typically installed as the main auxiliary generator on large merchant vessels to supply hotel loads, cargo handling equipment, and emergency power. Also used in offshore platforms where high‑temperature insulation and robust construction are essential.

Datasheet

DIG 1250kVA 690V 50Hz unverified

· diesel generator set

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1250 kVA) suitable for medium‑size vessels
Insulation class H provides good thermal endurance
Compact 4‑pole construction gives stable voltage and frequency
IP23 enclosure protects against splashing water while allowing easy access for maintenance

Weaknesses

Enclosure rating IP23 is not fully dust‑tight, limiting use in very harsh environments
No built‑in redundancy; a single unit must be paired with another set for critical loads
Limited documentation publicly available, making detailed performance verification harder

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vessel

Decision Guide: Choose if: you need a proven 1250 kVA diesel generator with class‑H insulation for vessels in moderate marine climates and have space for a standard IP23 set. Avoid if: the installation requires dust‑tight (IP54+) protection, built‑in redundancy, or you must meet specific classification society type approvals that are not confirmed for this model.

Use Cases: The DIG 1250 kVA is typically installed as part of the main power plant on medium‑size cargo ships and offshore supply vessels, supplying propulsion auxiliaries, hotel loads, and emergency power when paired with a second set for redundancy.

Datasheet

DIG 1250kVA 690V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1 250 kVA) suitable for large ship auxiliaries
Robust IP23 enclosure and Class‑H insulation for harsh marine environments
Integrated control system with remote monitoring capability
Proven track record on tankers, container ships and cruise vessels
Standard 690 V/60 Hz output matches most modern ship electrical systems

Weaknesses

Large physical footprint and weight limit installation in space‑constrained hulls
Requires dedicated cooling water system and regular diesel maintenance
Noise level higher than newer low‑speed or hybrid alternatives
Fixed 60 Hz frequency – not suitable for vessels requiring dual‑frequency (50/60 Hz) capability
Emissions compliance may need additional after‑treatment kits for IMO Tier II/III

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 1 250 kVA auxiliary source for a large vessel, have sufficient engine room space, and value proven diesel technology with integrated monitoring. Avoid if: the installation envelope is tight, dual‑frequency or ultra‑low emissions are mandatory, or you prefer newer hybrid/low‑speed solutions.

Use Cases: The DIG 1250 kVA is typically installed as a main auxiliary generator on large commercial ships to supply hotel loads, cargo handling equipment and emergency power. It is also used on cruise ships for propulsion‑related auxiliaries and on offshore vessels where high, continuous power is required for deck machinery.

Datasheet

DIG 1600kVA 400V 50Hz unverified

· synchronous marine generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1600 kVA) suitable for large auxiliary loads
Class H insulation allows operation at elevated temperatures without derating
Standard European voltage/frequency (400 V, 50 Hz) simplifies integration on many vessels
Robust IP23 enclosure provides protection against splash and dust in engine‑room environments

Weaknesses

Relatively large physical size and weight typical of high‑power generators (exact figures not provided)
Designed for 50 Hz systems only; not directly compatible with US 60 Hz installations
IP23 rating does not protect against full water ingress, limiting use in very harsh wet locations

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a proven high‑capacity auxiliary generator for 400 V/50 Hz European‑type vessels and can accommodate its size and weight. Avoid if the installation requires 60 Hz operation, a higher ingress protection rating, or a more compact unit.

Use Cases: Commonly installed as a main auxiliary generator on large merchant ships to supply propulsion auxiliaries, hotel loads, and emergency power; also used in offshore platforms where reliable high‑power generation is required.

Datasheet

DIG 1600kVA 400V 60Hz unverified

· diesel‑driven synchronous generator

Power (kVA)

1600

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1600 kVA) suitable for large vessels
Class‑H insulation allows operation at elevated temperatures, enhancing reliability in hot climates
Four‑pole design provides stable 60 Hz frequency with low harmonic distortion
IP23 enclosure offers splash protection while allowing easier access for maintenance
Integrated control interface compatible with common shipboard automation systems

Weaknesses

IP23 rating does not protect against dust or heavy water ingress, limiting use in very harsh environments
Designed exclusively for 60 Hz operation; unsuitable for vessels requiring 50 Hz power grids
Physical size and weight are significant, requiring ample engine‑room space
Higher fuel consumption compared with newer low‑speed, high‑efficiency gensets of similar rating
Limited aftermarket support in regions where AvK has a small dealer network

Typical Vessels: Cruise shipsContainer vesselsTankers (crude and product)LNG carriersOffshore supply vessels

Decision Guide: Choose if: you need a proven, high‑output 1600 kVA generator for 60 Hz US‑registered ships, value robust temperature tolerance, and have sufficient engine‑room space. Avoid if: the vessel operates on a 50 Hz power system, requires a fully sealed (IP65+) enclosure, or prioritises minimal fuel consumption over proven legacy design.

Use Cases: The DIG 1600 kVA is typically installed as the main auxiliary generator on large commercial vessels where reliable high‑power supply for propulsion auxiliaries, hotel loads, and cargo handling equipment is critical. It is also used on cruise ships to support extensive hotel services and on offshore supply vessels that need dependable power for dynamic positioning systems.

Datasheet

DIG 1600kVA 440V 50Hz unverified

· diesel-driven synchronous generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1600 kVA) suitable for medium‑size vessels
Four‑pole design provides stable frequency and good torque characteristics
IP23 enclosure offers protection against dust and limited water spray, fitting typical engine‑room environments
Insulation class H allows operation at elevated ambient temperatures common on ships
Integrated control panel simplifies installation and monitoring

Weaknesses

Limited to 50 Hz; not suitable for vessels requiring 60 Hz power systems
IP23 rating does not protect against heavy water ingress, limiting placement in very wet areas
Physical footprint and weight are relatively large for the rated power, affecting space‑critical installations
Requires diesel fuel supply and exhaust handling infrastructure
Single‑unit design provides no inherent redundancy; a second unit is needed for critical emergency power

Typical Vessels: Product TankerContainer Ship (up to ~30,000 DWT)General Cargo VesselCruise Ship (hotel load)Offshore Support Vessel

Decision Guide: Choose this generator when a reliable 1600 kVA, 440 V, 50 Hz source is needed for main auxiliary or hotel power on medium‑size vessels and space/weight allowances are acceptable. Avoid if the vessel operates on a 60 Hz system, requires higher splash protection (IP≥44), or demands built‑in redundancy without adding a second unit.

Use Cases: Typically installed as the primary auxiliary generator in the engine room to supply hotel loads, cargo handling equipment, and emergency power (when paired with a second unit). It is also used on offshore support vessels for dynamic positioning systems that run on 50 Hz power.

Datasheet

DIG 1600kVA 440V 60Hz unverified

· diesel‑driven synchronous generator

Power (kVA)

1600

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High output (1.6 MVA) suitable for main propulsion or heavy auxiliary loads
Class H insulation provides excellent thermal endurance and reliability
Four‑pole design ensures stable 60 Hz operation with low vibration
IP23 enclosure is robust enough for deck‑mounted installations while allowing easy access for maintenance
AvK brand reputation for long‑life marine alternators and straightforward modular servicing

Weaknesses

IP23 rating offers only splash protection; not suitable for harsh dust or wash‑down environments without additional shielding
Designed exclusively for 60 Hz systems – not a dual‑frequency unit
External cooling system required, adding to installation complexity
Fuel consumption can be relatively high at part‑load compared with newer low‑speed generators
Physical size and weight are considerable; may limit placement on vessels with tight space constraints

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary / support ship

Decision Guide: Choose if: you need a proven 1.6 MVA generator for a 440 V, 60 Hz marine power system and value AvK’s long‑track record and robust H‑class insulation. Avoid if: the installation requires higher IP protection, dual‑frequency capability, or strict weight/space limits that favor newer low‑speed gensets.

Use Cases: Typically installed as a main generator on large merchant vessels to supply propulsion auxiliaries, hotel loads, and emergency power; also used in offshore platforms where reliable high‑capacity generation is critical.

Datasheet

DIG 1600kVA 690V 50Hz unverified

· diesel‑driven synchronous generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (1600 kVA) suitable for main hotel load and emergency power.
Robust H‑class insulation tolerates elevated operating temperatures, extending service life.
IP23 enclosure provides dust protection and limited splash resistance appropriate for engine‑room environments.
Four‑pole design matches 50 Hz mains at 1500 rpm, simplifying coupling to standard diesel prime movers.
Proven track record with extensive global after‑sales support from AvK/ABB.

Weaknesses

Physical size and weight are large; installation may be constrained on smaller vessels or retrofits.
IP23 rating does not protect against heavy water ingress, limiting placement in very wet locations.
Fixed 690 V output may require additional transformers for vessels using different voltage levels.
Conventional diesel drive lacks the fuel‑efficiency and emissions benefits of newer hybrid or gas‑turbine generators.
Maintenance intervals are typical for older‑generation machines; newer models may offer longer service periods.

Typical Vessels: Bulk CarrierContainer ShipTankerCruise ShipOffshore Supply VesselLNG Carrier

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable, high‑capacity 1600 kVA generator with proven performance and existing AvK support on a vessel that can accommodate its size. Avoid if space is limited, you require low‑emission hybrid solutions, or the installation environment demands higher ingress protection than IP23.

Use Cases: Typically installed as the main auxiliary power source for large merchant ships, providing continuous hotel load and serving as an emergency generator under IMO regulations. Also used on offshore support vessels where robust, high‑temperature capable generators are required.

Datasheet

DIG 1600kVA 690V 60Hz unverified

· Four‑pole synchronous marine generator

Power (kVA)

1600

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (1 600 kVA) suitable for large vessels and hotel loads
Insulation class H provides good thermal tolerance for demanding operating conditions
Standard 690 V three‑phase supply matches most shipboard distribution systems
Four‑pole design ensures stable frequency at 60 Hz with low vibration
AvK SEG brand is recognised for robust engineering and long service life

Weaknesses

IP23 enclosure limits installation to indoor or well‑protected spaces; not suitable for exposed deck mounting
Large physical footprint and weight require dedicated generator room space
Class H insulation may demand more intensive cooling compared with lower classes
Only 60 Hz output – vessels standardized on 50 Hz would need a frequency converter or alternative unit
Single‑unit configuration provides limited redundancy if used as the sole source of critical power

Typical Vessels: Cruise shipContainer vesselBulk carrierTankerOffshore supply vessel

Decision Guide: Choose if you need a high‑capacity (1 600 kVA) generator for indoor installation on large vessels, require robust thermal performance and have a 60 Hz power system. Avoid if the installation area is exposed to spray or harsh weather (IP23 insufficient), the vessel operates on 50 Hz, or space/weight constraints preclude a large generator room.

Use Cases: Main auxiliary power plant for propulsion support, hotel‑load generation on cruise ships, emergency standby power for tankers and bulk carriers, and as a dedicated source for cargo‑handling equipment on container vessels.

Datasheet

DIG 2000kVA 400V 50Hz unverified

· marine synchronous generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output of 2 000 kVA suitable for large ship service loads
Standard 400 V/50 Hz rating matches most international vessel electrical systems
H‑class insulation allows operation at elevated temperatures, improving reliability
IP23 enclosure provides protection against dust and splashing in engine rooms

Weaknesses

Physical size and weight are substantial, requiring significant installation space
Requires dedicated cooling (air or water) to maintain temperature limits
Fixed voltage/frequency; not a multi‑frequency unit for vessels operating on both 50 Hz and 60 Hz systems
May need specific fuel handling and control integration compared with turnkey generator sets

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a robust, high‑capacity generator that matches the standard 400 V/50 Hz shipboard grid and can tolerate high operating temperatures. Avoid if space, weight, or multi‑frequency capability are critical constraints, or if specific classification approvals (e.g., USCG Type Approval) are required.

Use Cases: Typically installed as a main auxiliary generator on large merchant vessels to supply propulsion‑related electrical loads, hotel services, and emergency power; also used in offshore platforms where high continuous power is essential.

Datasheet

DIG 2000kVA 400V 60Hz unverified

· diesel-driven alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 2000 kVA suitable for large ship service loads
Standard 400 V/60 Hz rating matches most marine electrical systems
Insulation class H provides tolerance to elevated operating temperatures
IP23 enclosure offers splash‑proof protection for deck‑mounted installations
Four‑pole design yields a stable 1800 rpm synchronous speed

Weaknesses

Enclosure IP23 is limited to splash protection; not suitable for harsh dusty or heavily sprayed environments
Diesel engine drive entails fuel consumption and emissions compared with newer hybrid or LNG options
Noise and vibration levels typical of high‑speed diesel generators may require additional mitigation
Physical size and weight are considerable for vessels with tight space constraints (exact dimensions unknown)
Limited to 400 V output; not directly compatible with higher voltage shipboard distribution without step‑up gear

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG carrier

Decision Guide: Choose if you need a reliable 2 MVA, 400 V/60 Hz diesel generator with robust high‑temperature insulation and can accommodate an IP23 deck‑mounted unit. Avoid if the installation requires higher ingress protection (e.g., IP55), lower emissions or noise, or if space is severely limited.

Use Cases: Primary ship service power plant on large commercial vessels; emergency standby generation for critical safety systems; auxiliary power for propulsion auxiliaries and cargo handling equipment.

Datasheet

DIG 2000kVA 440V 50Hz unverified

· diesel‑driven synchronous generator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2 MW) suitable for large ship service loads
Robust IP23 enclosure provides protection against splashing water and dust in engine rooms
Insulation class H allows operation at elevated temperatures, enhancing reliability in hot climates
Standard 4‑pole design delivers stable 50 Hz frequency with low harmonic distortion
Integrated control panel (when equipped) simplifies monitoring and fault diagnostics

Weaknesses

Relatively large physical footprint; may require dedicated space in the engine room
Diesel fuel consumption is higher than newer hybrid or LNG‑fuelled generators of comparable rating
IP23 enclosure does not protect against direct water jets, limiting placement in very wet zones
No built‑in exhaust after‑treatment (e.g., SCR) unless specified as an option

Typical Vessels: Crude oil tankerProduct tankerBulk carrierContainer ship (>5 000 TEU)Cruise linerOffshore supply vessel

Certifications: IMO D‑2 Type ApprovalABS Marine Classification approvalDNV GL classification approval

Decision Guide: Choose if you need a proven, high‑power diesel generator for large auxiliary loads and have sufficient engine‑room space. Avoid if vessel size constraints demand a compact unit or if low‑emission fuel options (LNG, dual‑fuel) are mandatory.

Use Cases: The DIG 2000 kVA is typically installed as the main auxiliary power source on ocean‑going tankers and bulk carriers to run cargo pumps, refrigeration plants, and hotel services. It also serves cruise ships for propulsion support systems and offshore supply vessels that require reliable, continuous power for dynamic positioning equipment.

Datasheet

DIG 2000kVA 440V 60Hz unverified

· diesel‑driven synchronous alternator

Power (kVA)

2000

Voltage (V)

440

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2000 kVA in a compact marine‑grade package
Class H insulation allows reliable operation at elevated temperatures typical of engine rooms
Four‑pole design provides good voltage regulation and low harmonic distortion
IP23 enclosure offers protection against splashing water while allowing easy access for maintenance
Widely accepted by major classification societies, simplifying installation approvals

Weaknesses

IP23 rating does not protect against dust or heavy spray; additional shielding may be required in harsh environments
Large physical footprint compared with newer compact modular generators of similar output
Standard 440 V/60 Hz may need step‑up/down transformers for vessels operating on 50 Hz systems
Limited built‑in redundancy – a separate emergency generator is still required for safety‑critical ships

Typical Vessels: Container shipBulk carrierGeneral cargo vesselOffshore supply vesselCruise liner (main power plant)

Certifications: DNV GLABSLloyd's Register

Decision Guide: Choose if: you need a proven, high‑output generator for large commercial vessels and value class H insulation for hot engine rooms. Avoid if: the installation space is severely constrained or the vessel operates in environments requiring higher ingress protection (IP≥54) without additional enclosures.

Use Cases: The DIG 2000 kVA is typically installed as part of the main propulsion power plant on large cargo carriers, providing ship‑board electricity for propulsion auxiliaries, hotel services, and cargo handling equipment. It is also used on offshore supply vessels where a robust, high‑capacity generator is required to support dynamic positioning systems and heavy deck loads.

Datasheet

DIG 2000kVA 690V 50Hz unverified

· medium-speed marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output of 2000 kVA (≈2 MW) suitable for large vessels
Standard 690 V three‑phase voltage aligns with most shipboard distribution systems
Four‑pole design provides stable 50 Hz operation at ~1500 rpm
H‑class insulation tolerates elevated operating temperatures, enhancing reliability
IP23 enclosure offers protection against dust and water spray while allowing easy access for maintenance

Weaknesses

IP23 rating may be insufficient in very harsh or splash‑prone environments without additional shielding
Physical size and weight are substantial, requiring dedicated engine room space
Optimised for 50 Hz; operation on 60 Hz systems would require derating or redesign
Higher initial capital cost compared with lower‑power alternatives (exact price not disclosed)
Maintenance of medium‑speed units can be more complex than low‑speed, oil‑free designs

Typical Vessels: Large tankersContainer shipsCruise linersLNG carriersOffshore supply vessels

Decision Guide: Choose if you need a robust 2 MW generator for a vessel with standard 690 V, 50 Hz distribution and can accommodate the space and weight. Avoid if your ship operates on 60 Hz, has severe exposure to water ingress requiring higher IP ratings, or if envelope constraints limit installation of a medium‑size unit.

Use Cases: Main propulsion generator sets on large commercial ships, auxiliary power for hotel services on cruise vessels, emergency standby generation on tankers and offshore support vessels where high reliability and temperature tolerance are critical.

Datasheet

DIG 2000kVA 690V 60Hz unverified

· diesel-driven marine generator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2000 kVA) suitable for large auxiliary power needs
Class H insulation allows operation at elevated temperatures
IP23 enclosure provides splash protection in harsh marine conditions
Four‑pole design ensures stable 60 Hz frequency under varying loads
Modular construction simplifies on‑board installation and maintenance

Weaknesses

Large physical footprint and weight require dedicated engine room space
IP23 rating does not protect against dust ingress, limiting placement in dusty compartments
Designed for 60 Hz only; unsuitable where 50 Hz is required without a frequency converter
Fuel consumption can be high at partial loads if not properly load‑managed
Vibration and noise levels may necessitate additional isolation measures

Typical Vessels: Container shipCruise linerOffshore supply vesselLarge tankerBulk carrier

Decision Guide: Choose if: you need a reliable 2 MW auxiliary power source on a 60 Hz vessel, require high temperature tolerance and proven AvK durability, and have sufficient engine‑room space for the unit. Avoid if: the ship operates on 50 Hz systems, has strict dust‑proof enclosure requirements, or cannot accommodate the size and vibration mitigation needs.

Use Cases: Typically installed as a main auxiliary generator on large commercial vessels to supply hotel loads, cargo refrigeration plants, dynamic positioning systems, and emergency power. It is also used in offshore platforms where high continuous power and robust construction are critical.

Datasheet

Nidec Marine

SR4B 100kVA 400V 50Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~95%) due to synchronous design
Compact IP23 enclosure suitable for confined engine rooms
Class H insulation allows operation up to 180 °C, enhancing durability
Brush‑less construction reduces maintenance and downtime
Directly compatible with standard 400 V shipboard bus and can be paralleled

Weaknesses

IP23 rating offers limited protection against water spray; not suitable for wet locations
Fixed speed (1500 rpm at 50 Hz) may need gear reduction on slower prime movers
Maximum output of 100 kVA may require multiple units for larger power demands
No integrated sound attenuation, requiring additional muffling in noise‑sensitive areas

Typical Vessels: Container shipBulk carrierGeneral cargo vesselRo‑Ro ferryOffshore supply vesselTanker

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable, compact 100 kVA auxiliary generator with high temperature insulation for medium‑size vessels and can accommodate an IP23 environment. Avoid if you require higher ingress protection (e.g., IP66) or power ratings above 100 kVA.

Use Cases: Typically installed in the engine room as a standby/auxiliary generator, supplying ship services such as lighting, HVAC, cargo pumps, and emergency loads; often coupled directly to a diesel prime mover and can be paralleled for redundancy.

Datasheet

SR4B 100kVA 400V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

100

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact, low‑profile layout suitable for limited engine room space
High insulation class H provides good thermal endurance
Four‑pole construction gives stable voltage and frequency at varying loads
IP23 enclosure protects against dust and accidental contact while keeping weight down
Nidec’s proven marine heritage offers long‑term parts availability

Weaknesses

Maximum output of 100 kVA limits use on larger ships or high‑power demand applications
IP23 rating does not protect against water spray, requiring additional shielding in wet environments
Fixed 400 V three‑phase output may need step‑down transformers for vessels with different bus voltages
No built‑in fuel‑efficiency optimisation features found on newer hybrid generator sets

Typical Vessels: Offshore supply vesselFerry (up to ~150 GT)Coastal cargo shipYacht / superyachtSmall container feeder

Decision Guide: Choose if: you need a compact, reliable 100 kVA auxiliary power source for vessels with a 400 V three‑phase bus and can accommodate an IP23 enclosure. Avoid if: the vessel requires higher power output, water‑tight protection (IP≥44), or integrated hybrid/energy‑storage functionality.

Use Cases: Typically installed as the main auxiliary generator on offshore supply ships, ferries, and large yachts where space is at a premium and a steady 400 V supply is required for hotel loads, deck machinery, and navigation equipment. It also serves as a standby source on small container feeders that operate in temperate climates.

Datasheet

SR4B 100kVA 690V 50Hz Marine unverified

· brushless marine alternator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact, high‑speed design suitable for limited engine‑room space
Brush‑less construction reduces maintenance and improves reliability
Class H insulation permits higher operating temperatures and better thermal endurance
Four‑pole configuration provides stable frequency output at 50 Hz
IP23 rating is adequate for protected indoor installations

Weaknesses

IP23 enclosure limits use to dry, indoor locations; not suitable for exposed or wet areas
Requires compatible diesel engine and excitation system supplied by Nidec or approved OEMs
Limited published data on weight and dimensions may complicate detailed layout planning
May need additional cooling provisions in high‑ambient temperature conditions

Typical Vessels: Container shipTankerBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a compact, low‑maintenance 100 kVA generator for indoor engine‑room installation and can provide the required excitation system. Avoid if the installation environment is exposed to water or harsh weather, or if higher IP protection or variable‑frequency capability is mandatory.

Use Cases: Provides auxiliary power for shipboard services such as lighting, HVAC, cargo handling equipment, and emergency standby power on vessels where space is at a premium and a reliable brushless generator is preferred.

Datasheet

SR4B 100kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

100

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact IP23 enclosure suitable for limited engine‑room space
Class H insulation allows operation in higher ambient temperatures
Four‑pole design provides stable 60 Hz output with low vibration
Integrated alternator/generator reduces footprint compared with separate units
Nidec Marine reputation for reliability and long service intervals

Weaknesses

IP23 rating offers limited protection against water ingress; not suitable for wet locations without additional sealing
Fixed 690 V output may require step‑down transformers for some shipboard systems
Maximum 100 kVA limits use on larger vessels that need higher auxiliary power
May lack built‑in automatic voltage regulator (AVR) in base configuration, requiring optional accessories

Typical Vessels: Offshore supply vesselFeeder container shipSmall tankerCruise ship hotel load auxiliaryFishing factory vessel

Decision Guide: Choose if you need a reliable, compact 100 kVA marine‑rated generator with high temperature tolerance for medium‑size vessels and have space constraints. Avoid if the installation requires higher IP protection, higher voltage output, or power above 100 kVA.

Use Cases: Commonly installed as an auxiliary or emergency generator to supply hotel loads, navigation equipment, cargo handling gear, and start‑up power for main propulsion on medium‑size commercial vessels.

Datasheet

SR4B 150kVA 400V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact, high‑power density suitable for limited engine‑room space
Brushless design reduces maintenance intervals and eliminates spark hazards
Class‑H insulation allows operation in high ambient temperatures typical on vessels
Standard 400 V three‑phase output matches most marine electrical systems

Weaknesses

IP23 enclosure provides only limited protection against water ingress; not ideal for very wet or corrosive environments
Maximum output of 150 kVA may be insufficient for larger ships requiring higher auxiliary power
External cooling system required in hot climates, adding to installation complexity
Limited availability of spare parts compared with more common brands in some regions

Typical Vessels: Coastal cargo vesselsOffshore supply boatsFerries (up to ~150 kW auxiliary load)Patrol and coast‑guard shipsLarge yachts

Decision Guide: Choose if you need a reliable, low‑maintenance 150 kVA generator for medium‑size vessels with moderate environmental exposure and limited engine‑room space. Avoid if the installation requires a fully sealed (IP66/68) unit, higher power output, or if spare‑part logistics favor more widely stocked brands.

Use Cases: Typically installed as the main auxiliary generator on mid‑size commercial vessels, providing continuous power for hotel loads and serving as emergency backup during engine failure. Also used in retrofit projects where space constraints demand a compact, brushless solution.

Datasheet

SR4B 150kVA 400V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

150

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

150 kVA output matches standard service bus requirements on many medium‑size vessels
Compact IP23 splash‑proof enclosure saves space in confined engine rooms
Class H insulation permits operation at higher ambient temperatures without derating
Four‑pole design provides stable 60 Hz frequency with low vibration
Nidec Marine reputation for reliability and long service intervals

Weaknesses

IP23 rating offers only splash protection; not suitable for dusty or highly corrosive environments
Limited to 60 Hz operation, making it unsuitable for vessels requiring 50 Hz power systems
Fixed 150 kVA rating may be undersized for larger ships that need higher auxiliary capacity
No built‑in redundancy; a separate standby unit is required for critical emergency power
Cooling system may require dedicated ventilation space compared with newer high‑efficiency units

Typical Vessels: Coastal cargo vesselsFerriesWorkboatsOffshore supply vesselsSmall cruise ships

Decision Guide: Choose if you need a proven 150 kVA, 400 V auxiliary generator for 60 Hz regions and have space for an IP23 enclosure. Avoid if the vessel operates on 50 Hz systems, requires dust‑tight protection (IP54+), or demands higher power output or built‑in redundancy.

Use Cases: Commonly installed as a main service generator or emergency standby unit to supply lighting, HVAC, cargo handling equipment and other shipboard loads on medium‑size commercial vessels.

Datasheet

SR4B 150kVA 690V 50Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design reduces maintenance and eliminates the need for regular brush replacement.
Compact footprint suitable for space‑constrained engine rooms.
Class‑H insulation allows operation at higher temperatures, improving reliability in hot climates.
Standard 690 V output matches common ship bus systems, simplifying integration.
Four‑pole construction provides stable voltage and frequency at 50 Hz.

Weaknesses

IP23 rating only protects against splash; not suitable for heavily dusty or corrosive compartments without additional protection.
Maximum voltage of 690 V may require step‑up transformers for vessels that standardise on higher bus voltages (e.g., 11 kV).
Limited power output (150 kVA) may be insufficient for larger vessels requiring multiple high‑capacity generators.
External cooling fan required, adding to auxiliary power consumption and potential noise.
No integrated fuel‑cutoff or automatic load‑sharing controller; must be supplied separately.

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise ship (auxiliary service)Ferry

Decision Guide: Choose if: you need a reliable, low‑maintenance 150 kVA auxiliary generator that fits into tight engine‑room spaces and matches standard 690 V bus systems. Avoid if: the installation requires higher voltage output, dust‑tight (IP54+) protection, or a single larger‑capacity unit for main propulsion support.

Use Cases: Typically installed as an auxiliary or emergency standby generator to supply ship services such as lighting, HVAC, cargo handling equipment, and navigation electronics on medium‑size commercial vessels. Also used on offshore platforms where compact, robust power sources are required.

Datasheet

SR4B 150kVA 690V 60Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

150

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency and low maintenance due to brushless design
Robust construction with Class H insulation suitable for harsh marine environments
Compact size relative to power output, facilitating installation in limited spaces
Four‑pole design provides stable 60 Hz operation with good overload capability

Weaknesses

IP23 enclosure offers only basic protection against water spray; not suitable for heavily exposed locations
Fixed 690 V output may require additional transformers for vessels using different voltage systems
Weight and mounting requirements can be significant on small craft (exact figures unavailable)
Limited noise‑reduction features compared with some low‑speed, insulated generators

Typical Vessels: Platform Supply VesselOffshore Support VesselMedium‑size Container ShipCruise Ship auxiliary power systemFerryNaval auxiliary vessel

Decision Guide: Choose if you need a reliable 150 kVA brushless generator with high insulation class for standard 690 V shipboard systems and have space for an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55), very low weight, or direct integration into non‑standard voltage networks without additional equipment.

Use Cases: Commonly installed as auxiliary generators on offshore supply vessels, cruise ships, and medium‑size cargo carriers to provide hotel power, emergency power, and shore‑power support. Also used on offshore platforms where a compact, high‑efficiency generator is required for continuous operation.

Datasheet

SR4B 200kVA 400V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and high power density suitable for limited engine‑room space
H‑class insulation provides good thermal endurance and reliability
Four‑pole design yields standard 1500 rpm operation at 50 Hz, simplifying drive coupling
IP23 enclosure offers basic protection against dust and splash while keeping cooling efficient

Weaknesses

IP23 rating does not protect against heavy water ingress; unsuitable for harsh wet‑deck exposure
Fixed 400 V output may require additional transformers on vessels that standardise on other voltages
No built‑in sound attenuation; external muffling may be needed for noise‑sensitive installations

Typical Vessels: FerryOffshore supply vesselCruise ship (hotel load)Medium‑size container or bulk carrier (auxiliary generator)

Decision Guide: Choose if you need a reliable 200 kVA auxiliary generator with compact dimensions, H‑class insulation and standard 400 V/50 Hz output for vessels operating in temperate climates. Avoid if the installation requires higher ingress protection (IP≥44), operation at 60 Hz, or direct integration into high‑voltage shipboard distribution systems without additional step‑up equipment.

Use Cases: Typically installed as an auxiliary generator to supply hotel services, emergency power and secondary propulsion loads on ferries, offshore support vessels and cruise ships where space is limited and a robust, low‑maintenance brushless design is preferred.

Datasheet

SR4B 200kVA 400V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

200

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (~94%) and low fuel consumption for its size
Compact footprint with integrated control panel reduces installation space
Brushless exciter minimizes maintenance requirements
Robust Class‑H insulation allows operation in high‑temperature engine rooms
IP23 enclosure provides protection against splashing water and dust

Weaknesses

IP23 rating is not fully weather‑proof; requires sheltered installation
Fixed 400 V/60 Hz output limits flexibility for vessels with different voltage standards
Relatively heavy for its power rating, impacting weight budgeting on smaller ships
No built‑in redundancy; a second unit is required for critical emergency power
Requires external cooling water system in high ambient temperature conditions

Typical Vessels: Container shipBulk carrierTankerOffshore supply vesselCruise linerFerry

Certifications: IMO Type Approval

Decision Guide: Choose if: you need a reliable 200 kVA auxiliary generator for vessels with standard 400 V/60 Hz systems, prefer a compact brushless design and can provide a protected installation space. Avoid if: the vessel requires higher voltage or frequency flexibility, needs a fully weather‑proof enclosure, or must meet strict redundancy requirements without adding a second unit.

Datasheet

SR4B 200kVA 690V 50Hz Marine unverified

· brushless marine alternator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 200 kVA in a relatively small footprint.
Brush‑less design reduces maintenance intervals and improves reliability.
Class‑H insulation allows operation at higher temperatures, extending service life in hot engine rooms.
IP23 enclosure provides protection against dust and splash water for dry‑space installations.
Standard 690 V output matches common shipboard distribution systems.

Weaknesses

IP23 rating is not suitable for wet or exposed locations; requires a dry installation area.
Fixed 690 V output may need additional transformers for vessels using other voltage levels.
Higher rotational speed can increase vibration and acoustic noise compared with low‑speed units.
Limited redundancy if only a single unit is installed; failure impacts full auxiliary load.
No integrated fuel‑cell or hybrid capability – purely diesel‑driven generation.

Typical Vessels: Cruise shipsFerriesOffshore supply vesselsContainer shipsTankers

Decision Guide: Choose if you need a compact, low‑maintenance 200 kVA auxiliary generator for dry‑space installation on 50 Hz vessels and value class‑H temperature tolerance. Avoid if the installation area is exposed to heavy spray or water ingress, if you require higher voltage outputs without additional transformers, or if vibration/noise constraints are critical.

Use Cases: The SR4B is typically installed in engine rooms or dedicated generator compartments to supply hotel loads, emergency power, and cargo‑handling equipment on medium‑size commercial vessels. It can also serve as a standby unit for redundancy in larger ships where space is at a premium.

Datasheet

SR4B 200kVA 690V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

200

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (≈95%) and low fuel consumption due to brushless design
Compact footprint with integrated control panel for easy installation
Robust class H insulation suitable for harsh marine environments
Built‑in overload capability (typically 110% for 30 min)
Low maintenance – no brushes to replace

Weaknesses

IP23 enclosure offers limited protection against water spray; not suitable for exposed deck installations
Fixed 690 V output may require step‑up transformers on vessels requiring higher bus voltages
Weight and dimensions are larger than some lightweight diesel generators of similar rating
Requires Nidec‑specific control system for full functionality

Typical Vessels: Platform Supply VesselOffshore Support VesselTugboatFeeder Container ShipSmall Bulk Carrier

Certifications: DNVABS

Decision Guide: Choose if you need a reliable 200 kVA auxiliary power source with high efficiency, compact size and brushless operation for vessels operating in moderate marine environments. Avoid if the installation requires IP66 protection, higher bus voltages than 690 V, or ultra‑lightweight equipment.

Use Cases: Commonly installed as an auxiliary generator to supply hotel loads, emergency power, and secondary propulsion systems on offshore support and supply vessels; also used for shore‑power generation on platforms where space is at a premium.

Datasheet

SR4B 250kVA 400V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact 4‑pole design provides good torque characteristics for diesel engine drive
Class H insulation allows higher temperature operation and longer life
IP23 enclosure protects against splashing water while keeping the unit accessible for maintenance
Proven Nidec Marine reliability with a long service history in commercial fleets
Standard 400 V three‑phase output matches most shipboard electrical systems

Weaknesses

Limited to 250 kVA; not suitable for vessels requiring higher auxiliary power
IP23 rating does not protect against dust ingress, limiting placement in harsh environments
Four‑pole construction is larger than high‑speed alternatives of the same rating
Requires a dedicated diesel engine or prime mover – no built‑in engine option

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vesselFerry

Certifications: IMO Type ApprovalDNV

Decision Guide: Choose if: you need a reliable 250 kVA auxiliary generator for medium‑size commercial vessels, prefer a low‑speed synchronous design with proven service records, and have space for a four‑pole unit. Avoid if: the vessel requires higher power density, operates in dusty or highly corrosive environments where a higher IP rating is mandatory, or you need an integrated engine‑generator set.

Use Cases: Typically installed as part of the ship's auxiliary power plant to supply hotel loads, cargo refrigeration, navigation equipment and emergency systems on tankers, container ships, cruise vessels and offshore support ships. Often paired with medium‑speed diesel engines in a dedicated generator room.

Datasheet

SR4B 250kVA 400V 60Hz Marine unverified

· brush-less synchronous marine generator

Power (kVA)

250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brush‑less design eliminates the need for regular rotor brush maintenance
High efficiency typical of Nidec SR series, reducing fuel consumption for diesel drives
Compact IP23 enclosure suitable for indoor engine‑room installation where space is limited
Insulation class H allows operation in high‑temperature environments up to 180 °C
Proven reliability from Nidec Marine’s long‑standing marine product line

Weaknesses

IP23 rating provides only limited protection against water spray; not ideal for exposed or harsh marine environments
Designed for 400 V/60 Hz only, limiting use in vessels that operate on 50 Hz systems without a frequency converter
No integrated control panel – requires separate monitoring and protection equipment
Power output (250 kVA) may be insufficient for larger vessels requiring higher auxiliary capacity
Physical weight-to‑power ratio is typical of conventional generators, not as light as some newer permanent‑magnet units

Typical Vessels: FerriesOffshore supply vesselsMedium‑size container shipsGeneral cargo/bulk carriers (up to ~30 kt)Cruise ship auxiliary generators (as part of a multi‑generator set)

Decision Guide: Choose if you need a reliable 250 kVA auxiliary generator for a 400 V/60 Hz system, have limited engine‑room space and prefer low maintenance brush‑less operation. Avoid if the installation requires higher ingress protection (IP55+), must run on 50 Hz power, or demands greater than 250 kVA capacity.

Use Cases: Typically installed in the main engine room of medium‑size commercial vessels to supply hotel loads, navigation equipment, and emergency power when the main propulsion plant is offline. Frequently paired with diesel generators that drive the alternator via a prime mover, providing continuous auxiliary electricity during port stays or at sea.

Datasheet

SR4B 250kVA 690V 50Hz Marine unverified

· synchronous marine alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size for its 250 kVA rating, fitting typical engine rooms
Class‑H insulation allows operation in high temperature environments
Standard 690 V three‑phase output matches most shipboard electrical systems
Proven Nidec Marine reliability and global service network
Four‑pole design provides good low‑speed torque characteristics

Weaknesses

IP23 enclosure offers only basic dust protection; not splash‑proof for heavy spray areas
No integrated control panel – requires separate governor/monitoring equipment
Weight is relatively high compared with newer lightweight aluminum designs
Limited to 50 Hz markets; not directly suitable for 60 Hz vessels without derating

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore support vessel

Decision Guide: Choose if you need a reliable 250 kVA generator that matches the standard 690 V bus on new‑build or retrofitted vessels, and you value Nidec’s service support. Avoid if you require higher IP protection for harsh spray zones, an integrated control system, or a lighter aluminium‑frame unit.

Use Cases: Commonly installed as auxiliary generators for hotel load, emergency power supply, or shore‑power conversion on medium‑size merchant vessels and offshore platforms where space is limited but robust performance is required.

Datasheet

SR4B 250kVA 690V 60Hz Marine unverified

· Marine alternator

Power (kVA)

250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency design reduces fuel consumption for auxiliary power.
Compact footprint and low weight compared with comparable brush‑type generators.
Robust Class H insulation allows operation in high ambient temperature zones.
Integrated control electronics simplify installation and monitoring.
Proven Nidec Marine reputation for reliability and long service intervals.

Weaknesses

IP23 rating provides only splash protection; not suitable for harsh exposure without additional shielding.
Fixed 690 V output limits use on vessels that require higher voltage or 50 Hz systems.
Single‑unit configuration offers limited redundancy for critical emergency power.
Initial purchase price is typically higher than basic diesel generators of similar rating.
Noise and vibration, while reduced, may still require acoustic insulation in passenger areas.

Typical Vessels: Offshore supply vesselsFerries and Ro‑Ro shipsCoastal tankersContainer feedersWorkboats and ROV support vessels

Decision Guide: Choose the SR4B when you need a compact, high‑efficiency 250 kVA generator for 690 V 60 Hz auxiliary power on medium‑sized vessels and can accommodate its IP23 enclosure. Avoid it if your vessel requires higher voltage, 50 Hz operation, full weatherproofing (IP66+), or built‑in redundancy for emergency power.

Use Cases: The SR4B is typically installed as the main auxiliary generator on offshore supply ships, ferries and coastal tankers to supply hotel loads, cargo handling equipment, and emergency lighting. It is also used in shore‑power conversion packages where a stable 690 V output is required.

Datasheet

SR4B 315kVA 400V 50Hz Marine unverified

· brushless alternator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact design with high power density for its rating
Brushless construction reduces maintenance and improves reliability
Class H insulation allows operation in high ambient temperatures
Integrated control system provides automatic voltage regulation and overload protection
Proven Nidec Marine brand reputation for marine‑grade durability

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for wet locations without additional shielding
Fixed 400 V output may require step‑up/down transformers on vessels standardized to 440 V systems
Weight and mounting dimensions can be substantial for very small craft
No built‑in cooling fan; relies on external ventilation which must be correctly designed

Typical Vessels: Offshore Supply VesselFerrySmall Container ShipCruise Ship (auxiliary power)Large Fishing Vessel

Certifications: ABS Type ApprovalDNV Classification

Decision Guide: Choose if you need a reliable, medium‑size auxiliary generator with high efficiency and low maintenance for vessels up to ~5 MW propulsion where space is at a premium. Avoid if the installation requires a water‑tight (IP66+) enclosure, higher voltage output (e.g., 440 V), or ultra‑lightweight equipment for very small craft.

Use Cases: Commonly installed as main auxiliary generators on offshore supply vessels and ferries to power hotel loads, navigation systems, and cargo handling equipment; also used as emergency generators on cruise ships and larger merchant vessels where a robust, low‑maintenance source of electrical power is required.

Datasheet

SR4B 315kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

315

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (315 kVA) in a compact footprint suitable for medium‑size vessels
H‑class insulation allows operation at elevated temperatures, improving reliability in hot engine rooms
Four‑pole design provides stable 1800 rpm speed at 60 Hz, matching common marine prime mover speeds
IP23 enclosure offers splash protection while keeping the unit relatively lightweight for its class
Nidec Marine’s proven track record and global service network simplify spare‑parts logistics

Weaknesses

IP23 rating does not protect against dust ingress; additional sealing may be required in harsh environments
Designed for 400 V systems only, which may necessitate step‑up/down transformers on vessels with different bus voltages
Standard maintenance intervals are similar to other large synchronous gensets – regular brush and bearing checks are mandatory
Limited to 60 Hz operation, making it unsuitable for vessels that standardise on 50 Hz power systems
Physical size and weight remain significant; installation requires adequate engine‑room space and structural support

Typical Vessels: Container shipsBulk carriersCruise linersOffshore supply vesselsNaval auxiliary ships

Decision Guide: Choose if: you need a reliable 315 kVA generator for a 400 V, 60 Hz shipboard power system and value high temperature tolerance with a global support network. Avoid if: the vessel operates on a 50 Hz grid, requires dust‑tight (IP5X/IP6X) protection, or has strict weight/space constraints that demand a lighter alternative.

Use Cases: The SR4B is typically installed as an auxiliary generator on medium to large commercial vessels, providing emergency power and supporting hotel loads such as HVAC, lighting, and cargo handling equipment. It is also used on offshore support ships where high‑temperature resilience and quick start‑up are critical for safety systems.

Datasheet

SR4B 315kVA 690V 50Hz Marine unverified

· brushless marine alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Compact size and high power density for its rating
Brush‑less design reduces maintenance and improves reliability
Class H insulation allows operation in high ambient temperatures
Integrated control system with built‑in protection functions
Proven track record on offshore and ferry applications

Weaknesses

IP23 enclosure offers limited dust protection; not suitable for harsh corrosive environments without additional shielding
Fixed 690 V output limits flexibility for vessels requiring higher voltage or dual‑frequency systems
Relatively heavy compared with newer lightweight aluminium‑frame generators
Overload capability is limited to short periods; continuous high‑load operation may require external cooling

Typical Vessels: Offshore Supply VesselFerryCruise Ship (auxiliary power)Container Ship (auxiliary generator)Bulk Carrier (auxiliary generator)

Decision Guide: Choose if: you need a compact, low‑maintenance 315 kVA generator for 690 V/50 Hz systems on vessels with moderate space constraints and standard marine environmental exposure. Avoid if: the installation requires higher voltage levels, dual‑frequency capability, or an enclosure rating above IP23 for severe dust/water ingress conditions.

Use Cases: Commonly installed as a main auxiliary generator on offshore supply vessels and ferries, providing propulsion support or hotel power; also used as emergency generators on larger cargo ships where space and reliability are critical.

Datasheet

SR4B 315kVA 690V 60Hz Marine unverified

· deck‑mounted marine alternator

Power (kVA)

315

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 315 kVA in a relatively compact footprint
Class H insulation allows operation up to 180 °C for improved reliability in hot climates
IP23 enclosure provides protection against dust and limited splashing, suitable for deck installation
Four‑pole design delivers stable 60 Hz output at 1800 rpm, simplifying coupling with standard marine drives
Nidec Marine reputation for robust construction and long service intervals

Weaknesses

IP23 rating does not protect against heavy rain or immersion; additional shielding may be required in harsh weather
Fixed speed (synchronous) – not suited for variable‑speed or hybrid propulsion schemes
Limited to 690 V output; vessels using higher bus voltages will need step‑up transformers
Noise and vibration levels typical of high‑speed generators may require extra acoustic treatment
No built‑in redundancy; a second unit is needed for true N+1 backup

Typical Vessels: Container shipCruise linerOffshore supply vesselFerryNaval auxiliary

Decision Guide: Choose if you need a reliable, compact 315 kVA generator for a 690 V/60 Hz system with moderate environmental exposure and high‑temperature insulation. Avoid if the installation requires higher ingress protection (e.g., IP55), variable‑speed operation, or direct integration into higher‑voltage busbars without additional transformers.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, cargo handling equipment, and emergency generators on medium‑size commercial vessels; also used to supply propulsion auxiliaries on ships that employ separate main engines.

Datasheet

SR4B 400kVA 400V 50Hz Marine unverified

· 4-pole synchronous generator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for medium‑size auxiliary gensets (400 kVA).
Four‑pole construction provides stable frequency and low vibration.
IP23 enclosure offers splash protection while keeping the unit compact.
Class H insulation tolerates typical marine temperature ranges.
Designed for straightforward integration with Nidec Marine diesel engines.

Weaknesses

IP23 rating is not dust‑tight; additional sealing may be required in harsh environments.
Fixed 400 V output may need step‑up transformers for vessels that operate at higher bus voltages.
Class H insulation limits maximum temperature compared with newer Class F/N designs.
Only available for 50 Hz systems, unsuitable for ships requiring 60 Hz power.
No built‑in redundancy; a single unit must be complemented by another genset for full redundancy.

Typical Vessels: Bulk CarrierContainer ShipTankerGeneral Cargo VesselOffshore Supply Vessel

Decision Guide: Choose if you need a compact, reliable 400 kVA auxiliary generator for a 50 Hz vessel and space/weight are at a premium. Avoid if your ship requires higher bus voltage, dust‑tight protection, or operation on a 60 Hz power system.

Use Cases: Commonly installed as an auxiliary genset to supply hotel loads, emergency power, cargo handling equipment, and shore‑power conversion on medium‑size commercial vessels.

Datasheet

SR4B 400kVA 400V 60Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

400

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency brush‑less design reduces maintenance intervals
Compact footprint suitable for space‑constrained engine rooms
Class H insulation allows operation at elevated temperatures
Four‑pole construction provides stable 60 Hz output under varying loads

Weaknesses

IP23 rating offers limited protection against water ingress; not ideal for harsh spray zones
Fixed 400 V output may require additional transformers on vessels using different bus voltages
No built‑in fuel‑saving controls; performance depends on the coupled prime mover

Typical Vessels: Cruise shipsOffshore supply vesselsFerriesContainer ships (auxiliary power)Tankers (hotel load)

Decision Guide: Choose if you need a reliable, compact 400 kVA generator with low maintenance brush‑less operation and can accommodate an IP23 enclosure. Avoid if the installation requires higher ingress protection (e.g., IP55) or integrated emissions controls that exceed the capabilities of the coupled prime mover.

Use Cases: Commonly installed as auxiliary or emergency power on passenger vessels, offshore support ships, and cargo carriers to supply hotel loads, navigation equipment, and critical systems when main propulsion is offline.

Datasheet

SR4B 400kVA 690V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency synchronous design reduces fuel consumption of the driven engine.
Compact footprint and low height make it suitable for limited engine‑room spaces.
Class H insulation permits operation at elevated temperatures, extending service life in hot climates.
Robust IP23 enclosure provides protection against splashing water and dust typical on deck installations.
Proven Nidec Marine reliability with a long field‑service record on merchant vessels.

Weaknesses

IP23 rating does not protect against heavy spray or immersion; harsher environments may require higher IP ratings.
Only available in 50 Hz version, limiting use on vessels that standardise on 60 Hz systems.
Standard offering lacks integrated digital monitoring; optional instrumentation adds cost and installation time.
Weight and mounting requirements can be substantial for retrofit projects.
Limited to 690 V bus voltage – not directly compatible with higher‑voltage ship grids without step‑down transformers.

Typical Vessels: ContainerBulk CarrierTankerCruise ShipOffshore Supply Vessel

Certifications: IMO D-2

Decision Guide: Choose if you need a reliable 400 kVA service generator for 50 Hz, 690 V ship power with proven Nidec Marine durability and a compact layout. Avoid if your vessel requires higher IP protection, 60 Hz operation, integrated smart monitoring as standard, or a different voltage level.

Use Cases: Main service power plant on large merchant ships, emergency backup generator for critical hotel loads, auxiliary power for cargo handling gear, and shore‑side power supply during port stays where shipboard generation is required.

Datasheet

SR4B 400kVA 690V 60Hz Marine unverified

Power (kVA)

400

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power rating (400 kVA) in a compact 4‑pole design suitable for 690 V shipboard distribution
Insulation class H provides excellent thermal endurance for harsh marine environments
Nidec Marine’s reputation for reliability and long service life
Standard 60 Hz frequency matches most US‑registered vessels and many offshore platforms

Weaknesses

IP23 enclosure offers only limited protection against water spray and dust; additional shielding may be required in wet decks
Designed exclusively for 60 Hz operation, limiting use on vessels that run on 50 Hz systems
No integrated sound‑attenuation package – external mufflers or enclosures are needed to meet noise regulations
Requires separate control and protection panels; not a turnkey generator set

Typical Vessels: Container shipBulk carrierProduct tankerCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if you need a robust 400 kVA, 690 V generator for 60 Hz auxiliary power on medium‑size to large vessels and can accommodate an IP23 enclosure with additional weather protection. Avoid if the installation requires higher ingress protection (e.g., IP55) or must operate on 50 Hz systems.

Use Cases: Commonly installed as a main auxiliary generator for hotel load, emergency power supply, or dedicated cargo‑handling equipment on merchant vessels and offshore platforms where medium‑voltage distribution is standard.

Datasheet

SR4B 500kVA 400V 50Hz Marine unverified

· brushless marine generator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 500 kVA in a compact footprint typical of Nidec SR series units
Class‑H insulation allows reliable operation at elevated temperatures
IP23 enclosure provides protection against dust and water spray, suitable for deck installations
Reputable Nidec Marine brand with global service network and proven reliability
Integrated control system (when equipped) simplifies start‑up and monitoring

Weaknesses

IP23 rating does not protect against heavy splashing or immersion; unsuitable for harsh wet‑deck environments requiring higher ingress protection
Fixed 50 Hz frequency limits use in regions or vessels that operate on 60 Hz systems
Typical marine generators of this size require a dedicated cooling system and regular maintenance
Physical dimensions and weight are substantial, impacting installation space and handling
No built‑in redundancy; a second unit is required for true backup capability

Typical Vessels: Container shipGeneral cargo vesselOffshore supply vesselCruise liner (auxiliary power)Ferry

Decision Guide: Choose if you need a reliable 500 kVA auxiliary generator for 400 V/50 Hz systems, have space for an IP23‑rated unit and value Nidec's global support. Avoid if the installation requires higher ingress protection (e.g., IP55), must run on 60 Hz, or demands a smaller footprint than typical SR series generators provide.

Use Cases: Provides main auxiliary power for ship service loads such as lighting, HVAC, cargo handling equipment, and can serve as an emergency generator on vessels that operate primarily in 50 Hz regions. Often installed in engine rooms or dedicated generator compartments of medium‑size commercial ships.

Datasheet

SR4B 500kVA 400V 60Hz Marine unverified

· brushless marine alternator

Power (kVA)

500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

500 kVA output matches the auxiliary power needs of medium‑size commercial vessels
Standard 400 V/60 Hz three‑phase rating simplifies integration with existing shipboard electrical systems
Class H insulation permits operation at higher temperatures, enhancing reliability in hot engine rooms
Four‑pole design provides stable frequency and lower vibration compared to high‑speed units
Nidec Marine’s reputation for robust engineering and long service intervals

Weaknesses

IP23 enclosure only protects against splashing water; not suitable for harsh, fully wet environments without additional shielding
Designed for 60 Hz operation only – unsuitable for vessels that require 50 Hz power systems
Physical size and weight are typical of conventional generators and may be larger than newer compact, high‑speed models
No integrated sound‑attenuation package; extra mufflers or enclosures may be needed to meet noise regulations
Limited built‑in automation – requires separate control/monitoring system for advanced load‑sharing functions

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselGeneral cargo vessel

Decision Guide: Choose if you need a proven, 500 kVA marine generator with standard 400 V/60 Hz output, reliable high‑temperature insulation, and can accommodate an IP23 enclosure. Avoid if the installation demands higher ingress protection (e.g., IP55), operates on a 50 Hz system, or requires a compact, low‑noise package integrated into the alternator.

Use Cases: Provides auxiliary power for shipboard hotel loads, cargo handling equipment, and emergency standby generation on commercial vessels. Commonly installed in engine rooms to supply lighting, HVAC, pumps, and other critical systems during normal operation or as a backup to main propulsion generators.

Datasheet

SR4B 500kVA 690V 50Hz Marine unverified

· brushless marine alternator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates brush wear, resulting in lower maintenance costs.
High power density provides 500 kVA output in a relatively compact footprint.
Class H insulation permits operation in high ambient temperature environments.
Integrated Nidec control system supports remote monitoring and diagnostics.
IP23 enclosure protects against splashing water and dust.

Weaknesses

IP23 rating does not protect against heavy spray or immersion; additional shielding may be required.
Single‑unit configuration offers limited redundancy; a failure can affect vessel power supply.
Fixed 690 V output may necessitate transformers for vessels using different voltage standards.
Weight is substantial (exact figure unavailable), potentially impacting installation space and handling.
Designed for 50 Hz operation only, requiring frequency conversion for 60 Hz markets.

Typical Vessels: Offshore Supply VesselFerryCoastal Cargo ShipResearch VesselSmall Tanker

Decision Guide: Choose if you need a compact, low‑maintenance 500 kVA generator for 690 V/50 Hz systems and can accommodate an IP23 enclosure. Avoid if the vessel requires higher ingress protection (e.g., IP44+), built‑in redundancy, or operates on 60 Hz without conversion.

Use Cases: Provides main auxiliary power for hotel loads, cargo handling equipment, and emergency generation on medium‑size commercial vessels; commonly installed in engine rooms as a continuous or standby power source.

Datasheet

SR4B 500kVA 690V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (500 kVA) in a compact 4‑pole design suitable for 690 V shipboard systems
Insulation class H provides temperature tolerance up to 180 °C, enhancing durability in hot engine rooms
IP23 enclosure offers splash protection while allowing easy access for routine inspection and maintenance
Nidec Marine’s global service network ensures spare‑part availability and technical support
Standard 60 Hz frequency matches most US‑registered vessel power architectures

Weaknesses

IP23 rating is not dust‑tight or fully watertight, limiting use in extremely harsh or spray‑heavy environments
Designed for 60 Hz only; vessels requiring 50 Hz operation would need a different model
Physical size and weight are typical of high‑power marine alternators, which may be restrictive on smaller ships
No integrated sound‑attenuation enclosure – additional silencing measures may be required for hotel‑load applications
Requires periodic inspection of cooling system (air‑cooled) to prevent fouling in tropical climates

Typical Vessels: Bulk CarrierContainer ShipTankerOffshore Supply VesselCruise Ship (mid‑size)LNG Carrier

Certifications: IMO D-2

Decision Guide: Choose if you need a proven 500 kVA, 690 V auxiliary generator for 60 Hz US‑registered vessels and value Nidec’s service network. Avoid if the installation demands higher ingress protection (e.g., IP66), operation at 50 Hz, or strict weight/space constraints.

Use Cases: Typically installed as a main auxiliary generator on large merchant ships to supply propulsion auxiliaries, hotel loads, and emergency power; also used in offshore platforms where robust, high‑temperature tolerant generators are required.

Datasheet

SR4B 630kVA 400V 50Hz Marine unverified

· Marine synchronous generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Class H insulation allows operation in high ambient temperature environments.
Robust IP23 enclosure provides protection against dust and splash water typical of deck installations.
Four‑pole design gives good low‑speed torque characteristics, matching common marine prime mover speeds.
Proven Nidec Marine brand reputation for reliability and long service intervals.

Weaknesses

IP23 rating is not fully weather‑tight; additional shielding may be required for exposed deck locations.
Fixed 400 V output limits flexibility for vessels that standardise on other voltage levels (e.g., 440 V).
External cooling system is required, adding auxiliary piping and maintenance points.
Relatively large footprint compared with newer compact inverter‑driven generators.

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a proven 630 kVA auxiliary generator with high‑temperature insulation for vessels operating in warm climates and can accommodate an IP23 enclosure. Avoid if: the installation requires a fully weather‑proof (IP66+) unit, higher voltage output, or a compact inverter‑driven solution.

Use Cases: Commonly installed as the main auxiliary power source on medium‑to‑large merchant ships to supply hotel loads, cargo handling equipment and emergency systems; also used in standby/emergency generator sets where redundancy is required.

Datasheet

SR4B 630kVA 400V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

630

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 630 kVA in a relatively compact footprint.
Brushless design reduces maintenance and improves reliability.
Class‑H insulation permits operation at elevated temperatures typical of engine rooms.
Four‑pole construction provides stable frequency and good torque characteristics.
Proven Nidec Marine brand reputation for long‑life marine alternators.

Weaknesses

IP23 enclosure offers limited protection against dust and water splashes; not suitable for harsh exposure areas.
Only a 400 V output option – may require step‑up/down transformers for vessels with different voltage standards.
Designed for 60 Hz only, limiting use on ships that operate on 50 Hz power systems.
Weight and mounting requirements are typical of large marine generators, impacting space allocation.

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a reliable 630 kVA auxiliary generator for 60 Hz, 400 V systems on vessels where space is at a premium and low maintenance is critical. Avoid if the ship requires 50 Hz operation, higher voltage levels, or an enclosure rating above IP23 for exposed locations.

Use Cases: Commonly installed as a main auxiliary generator to supply hotel loads, cargo handling equipment, and emergency power on medium‑to‑large commercial vessels operating in North American and Asian markets where 60 Hz is standard.

Datasheet

SR4B 630kVA 690V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (typically >95%) due to synchronous operation
Compact footprint for a 630 kVA unit, saving valuable engine room space
Robust IP23 enclosure suitable for marine environments with good corrosion resistance
Insulation class H allows reliable operation at elevated temperatures
Integrated control and monitoring compatible with Nidec Marine power management systems

Weaknesses

Requires a 690 V three‑phase bus, limiting retrofit on vessels with lower voltage distribution
Four‑pole design runs at 1500 rpm (50 Hz), which may be less optimal for high‑speed diesel prime movers
Initial acquisition cost is higher than comparable conventional diesel generators from some OEMs
Cooling system must be carefully sized for continuous full‑load operation in warm climates

Typical Vessels: TankerContainer shipBulk carrierCruise linerOffshore supply vessel

Certifications: DNV

Decision Guide: Choose if you need a high‑efficiency, space‑saving generator for new builds or major retrofits on vessels that already use a 690 V distribution system and value integrated monitoring. Avoid if the vessel operates on lower voltage busbars, has strict budget constraints, or cannot accommodate the required cooling capacity.

Use Cases: The SR4B is commonly installed as part of the main propulsion auxiliary power plant on large merchant vessels, providing continuous ship service power for cargo handling equipment, hotel loads, and emergency generators. It is also used on cruise ships to supply high‑density hotel loads where space and efficiency are critical.

Datasheet

SR4B 630kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

630

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (630 kVA) in a compact 4‑pole design suitable for main‑auxiliary sets
Robust IP23 enclosure provides protection against spray and dust in harsh marine environments
Insulation class H allows operation at elevated temperatures, enhancing reliability
Nidec Marine’s reputation for long service intervals and low maintenance requirements
Standard 690 V output matches common shipboard distribution systems, simplifying integration

Weaknesses

Relatively large physical size and weight compared with newer high‑speed generator sets
Fixed 690 V rating may require additional transformers for vessels using other voltage levels
IP23 enclosure does not protect against submersion; unsuitable for fully wet locations
No built‑in redundancy; a second unit is required for critical redundancy strategies
Limited to 60 Hz operation, making it unsuitable for vessels operating on 50 Hz regions without conversion

Typical Vessels: Crude Oil TankerContainer ShipBulk CarrierCruise ShipOffshore Supply Vessel

Decision Guide: Choose if: you need a proven, high‑capacity auxiliary generator that matches the common 690 V shipboard bus and can tolerate high ambient temperatures. Avoid if: space, weight or lower voltage requirements are critical, or if you require a fully sealed (IP66+) unit for wet‑bay installation.

Use Cases: The SR4B is typically installed as part of the main auxiliary power plant on large commercial vessels, supplying hotel loads, cargo handling equipment, and serving as an emergency generator under IMO regulations. It is also used on offshore platforms where reliable, high‑output power is essential for both operational and safety systems.

Datasheet

SR4B 800kVA 400V 50Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 800 kVA in a relatively compact footprint
Class H insulation allows operation in elevated ambient temperatures
Four‑pole construction provides stable voltage and frequency output
IP23 enclosure offers basic protection against dust and water spray while keeping size low
Low maintenance design typical of brushless generators

Weaknesses

IP23 rating does not protect against heavy splashing or immersion, limiting use in wet deck areas
External cooling system may be required for prolonged full‑load operation
Maximum output of 800 kVA may be insufficient for very large vessels with high hotel loads
Higher initial capital cost compared to lower‑spec generators

Typical Vessels: Container shipBulk carrierTankerCruise liner (hotel load)Offshore supply vessel

Decision Guide: Choose if: you need a reliable 800 kVA auxiliary generator with high temperature tolerance and compact size for vessels operating on a 400 V/50 Hz system. Avoid if: the installation requires a higher ingress protection rating (e.g., IP54+) or a larger power output than 800 kVA.

Use Cases: Commonly installed as the main auxiliary generator supplying shipboard electrical distribution, emergency power, and hotel load on medium‑size cargo ships, tankers, and cruise vessels. Also used in offshore support vessels where space is at a premium and high ambient temperatures are expected.

Datasheet

SR4B 800kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

800

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 800 kVA in a relatively compact footprint for 400 V systems
H‑class insulation allows operation at elevated temperatures, improving reliability in hot climates
Four‑pole design provides stable frequency and lower vibration compared with higher‑speed units
Standard marine enclosure (IP23) protects against dust and splashing water while keeping size modest
Widely supported by Nidec Marine’s integrated control and monitoring packages

Weaknesses

IP23 rating is not fully weather‑proof; additional shielding needed for harsh offshore exposure
Fixed 400 V output may require step‑up transformers on vessels that standardise on higher bus voltages
Weight can be significant compared with newer lightweight diesel‑electric alternatives
No built‑in redundancy – a single failure disables the entire 800 kVA source unless backup is installed

Typical Vessels: Platform Supply Vessel (PSV)Offshore Support Vessel (OSV)Cruise Ship auxiliary powerFerrySmall to medium tankers

Decision Guide: Choose if: you need a proven, high‑output 800 kVA generator at 400 V with robust thermal capability and standard marine integration; the vessel operates mainly in protected spaces where IP23 is sufficient. Avoid if: the installation demands higher voltage busbars, extreme weather protection (IP66+), or weight‑critical designs that favour newer lightweight gensets.

Use Cases: Typically installed as a main auxiliary generator on offshore supply vessels to power hotel loads and cargo handling equipment, or as an emergency/standby generator on cruise ships and ferries where reliable, high‑capacity power is required for propulsion auxiliaries and safety systems.

Datasheet

SR4B 800kVA 690V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency brush‑less design reduces maintenance intervals
Class H insulation allows operation in high ambient temperature zones
Integrated Nidec control system provides automated load sharing and monitoring
Robust IP23 enclosure meets typical marine environmental protection requirements
Proven track record on large commercial vessels for reliable hotel power

Weaknesses

Physical size and weight are substantial compared to lower‑rated units, impacting space planning
IP23 rating requires adequate ventilation; not suitable for confined, poorly ventilated spaces
Fixed 690 V/50 Hz output limits flexibility for vessels requiring dual‑frequency or different voltage levels
Spare parts and service expertise are primarily tied to Nidec dealer network

Typical Vessels: Container shipCruise linerBulk carrierLNG carrierOffshore supply vesselNaval auxiliary

Certifications: ABSDNV GL

Decision Guide: Choose if you need a reliable 800 kVA, brush‑less generator with high temperature capability for main hotel load on large commercial vessels and have access to Nidec service support. Avoid if vessel space is at a premium, dual‑frequency operation is required, or the installation environment cannot provide the ventilation needed for an IP23 enclosure.

Use Cases: Typically installed as part of the auxiliary power plant on large ocean-going ships to supply hotel services, emergency generators, and sometimes as a secondary source for propulsion auxiliaries where high reliability and low maintenance are critical.

Datasheet

SR4B 800kVA 690V 60Hz Marine unverified

· Brushless synchronous generator

Power (kVA)

800

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous output (800 kVA) suitable for large vessel hotel loads and emergency power.
IP23 enclosure provides protection against splashing water in engine rooms.
Class H insulation permits operation at elevated temperatures, enhancing reliability.
Four‑pole design delivers stable 60 Hz frequency with low harmonic distortion.
Nidec’s modular construction simplifies installation, alignment and routine maintenance.

Weaknesses

Physical size and weight require ample engine‑room space and robust mounting structures.
Must be coupled to a dedicated diesel prime mover; not a standalone unit.
Higher upfront capital cost compared with lower‑rated generators.
Noise and vibration levels may need additional acoustic treatment on passenger vessels.
Fixed 690 V three‑phase output may require step‑down transformers for lower‑voltage systems.

Typical Vessels: Cruise shipContainer vesselLNG carrierTankerBulk carrierOffshore supply vessel

Decision Guide: Choose if the vessel needs a high‑capacity, reliable auxiliary generator and has sufficient engine‑room volume; the brushless design reduces maintenance and the IP23 rating suits wet marine environments. Avoid if space is constrained, power demand is modest, or budget limits preclude the higher purchase price.

Use Cases: Commonly installed as part of a main auxiliary set on cruise liners for hotel services, as emergency generators on tankers and bulk carriers, and to supply deck‑equipment loads on offshore supply vessels. It can also serve as a standby generator for propulsion auxiliaries on LNG carriers.

Datasheet

SR4B 1000kVA 400V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High 1 MVA output suitable for medium‑size vessels
Robust 4‑pole construction provides stable frequency and low vibration
Insulation class H allows operation at elevated temperatures
Standard 400 V/50 Hz rating matches most shipboard electrical systems
Reputable Nidec Marine brand known for reliability and long service life

Weaknesses

IP23 enclosure offers limited protection against water ingress; not suitable for wet or corrosive environments without additional shielding
Physical size and weight are relatively large compared with newer compact generator designs
Requires an external cooling system and separate automatic voltage regulator (AVR)
Fixed 400 V output may necessitate step‑up transformers on vessels that operate at higher voltages
No built‑in redundancy; a second unit is needed for true fail‑safe operation

Typical Vessels: Container shipBulk carrierProduct tankerOffshore supply vesselCruise linerRo‑Ro ferry

Decision Guide: Choose if you need a proven 1 MVA generator with standard 400 V/50 Hz output for vessels that have dry engine‑room conditions and can accommodate the unit’s size. Avoid if you require higher voltage, IP65 protection, or a compact, integrated AVR solution.

Use Cases: Main propulsion auxiliary power on medium‑size cargo ships, emergency generator on cruise liners, standby power for offshore supply vessels, and as part of a dual‑generator configuration on Ro‑Ro ferries where redundancy is required.

Datasheet

SR4B 1000kVA 400V 60Hz Marine unverified

· brushless synchronous generator

Power (kVA)

1000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brushless design eliminates maintenance associated with brushes and slip rings
High power density suitable for space‑constrained engine rooms
Class H insulation allows operation at elevated temperatures
IP23 enclosure provides splash protection in typical marine environments
Four‑pole construction delivers standard 1800 rpm speed at 60 Hz

Weaknesses

IP23 rating does not protect against dust ingress or heavy spray
Requires external cooling water system, adding installation complexity
Fixed 400 V output may require additional transformers for higher‑voltage distribution
Weight can be substantial compared with newer lightweight alternatives
No integrated sound attenuation; auxiliary silencing measures are needed

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 1 MVA auxiliary power source, prefer low‑maintenance brushless operation, and have limited engine‑room space. Avoid if: the installation requires dust‑tight or explosion‑proof protection, higher voltage output without step‑up gear, or minimal weight is critical.

Use Cases: Commonly installed as a main service generator on large commercial vessels to supply shipboard electrical loads, or as an emergency generator where high reliability and quick start are essential.

Datasheet

SR4B 1000kVA 690V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (>95%) reduces fuel consumption
Brushless design lowers maintenance requirements
Compact footprint suitable for space‑constrained engine rooms
Robust construction with IP23 enclosure for marine environments
Insulation class H provides good thermal endurance

Weaknesses

Fixed 690 V output may require additional transformers for vessels using different bus voltages
Relatively heavy compared with some newer lightweight generator sets
Requires a dedicated cooling water system and associated piping
Initial purchase cost is higher than basic diesel generators of similar rating

Typical Vessels: Container shipBulk carrierCruise linerOffshore support vesselNaval auxiliary ship

Decision Guide: Choose if you need a reliable 1 MW brushless generator with high efficiency and compact size for main or emergency service on large vessels. Avoid if your installation prefers lower voltage output, lighter weight, or has strict budget constraints.

Use Cases: Commonly installed as the primary auxiliary power source on large commercial ships to supply hotel loads, cargo handling equipment, and emergency power, often integrated with automated control panels for load sharing.

Datasheet

SR4B 1000kVA 690V 60Hz Marine unverified

· Four‑pole synchronous marine generator

Power (kVA)

1000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1000 kVA) suitable for large vessel hotel loads or propulsion auxiliaries
Class H insulation permits reliable operation at elevated temperatures typical of engine rooms
Proven Nidec Marine reliability and long service intervals
Standard 690 V/60 Hz output matches common shipboard distribution systems
Compact design relative to power rating, facilitating installation in limited spaces

Weaknesses

IP23 enclosure provides only splash protection; not ideal for harsh wet environments without additional shielding
Designed for 60 Hz operation only, limiting suitability in regions where 50 Hz shipboard systems are required
Physical size and weight can be substantial for vessels with tight machinery spaces (exact figures unavailable)
Requires dedicated cooling system integration, adding to installation complexity
Higher initial capital cost compared with lower‑rated generators

Typical Vessels: Crude oil tankerLNG carrierCruise shipOffshore supply vesselLarge container vessel

Decision Guide: Choose if you need a robust 1000 kVA auxiliary generator for 690 V/60 Hz systems on large vessels, value Nidec Marine’s reliability record, and can accommodate an IP23 enclosure. Avoid if your vessel operates on a 50 Hz network, requires higher ingress protection (e.g., IP55), or has severe space‑weight constraints.

Use Cases: Typically installed as the main auxiliary generator on large tankers, LNG carriers, and cruise ships to supply hotel loads and emergency power; also used on offshore support vessels where high‑capacity, reliable shipboard electricity is essential.

Datasheet

SR4B 1250kVA 400V 50Hz Marine unverified

· brush-less synchronous generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density suitable for space‑constrained engine rooms
Brush‑less construction reduces maintenance and downtime
Insulation class H allows operation at elevated temperatures
Robust 4‑pole design provides stable frequency and low vibration
IP23 enclosure offers splash protection while keeping the unit compact

Weaknesses

IP23 rating does not protect against dust ingress, limiting use in very harsh environments
Fixed 400 V/50 Hz output may require additional conversion equipment for vessels with different electrical standards
External cooling system is required, adding to installation complexity
Weight and dimensions are relatively high compared with smaller auxiliary generators (exact data not publicly disclosed)
Limited redundancy options without additional units

Typical Vessels: Container shipCrude oil tankerProduct tankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a reliable 1250 kVA auxiliary generator for a 400 V/50 Hz system, value low maintenance brush‑less operation, and have limited engine‑room space. Avoid if: the installation requires dust‑tight protection (IP6x), operates on a different voltage/frequency standard, or you need an integrated cooling solution without external piping.

Use Cases: Typically installed as a main auxiliary generator to supply hotel load, cargo handling equipment, and emergency power on large commercial vessels; also used in cruise ships for stable hotel‑electricity generation.

Datasheet

SR4B 1250kVA 400V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

1250

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1.25 MVA) suitable for large hotel‑load or propulsion‑auxiliary needs
Class H insulation allows operation at elevated temperatures, improving reliability in hot climates
Robust 4‑pole design provides stable voltage and frequency under varying load conditions
Integrated control and monitoring system simplifies installation and reduces auxiliary wiring
Proven Nidec Marine brand reputation for durability and long service intervals

Weaknesses

IP23 enclosure offers only splash protection; not ideal for harsh, salt‑spray environments without additional shielding
Large physical footprint and weight typical of >1 MW generators may limit placement on smaller vessels
Requires external cooling water system, adding complexity to installation
Fixed 60 Hz frequency limits use in regions or fleets standardized on 50 Hz systems
Higher upfront capital cost compared with lower‑rated alternatives

Typical Vessels: Container shipCruise linerOffshore supply vesselLNG carrierNaval auxiliary

Decision Guide: Choose if you need a reliable >1 MW auxiliary or emergency generator for a 400 V, 60 Hz system on a large commercial or offshore vessel and have space for a sizable unit. Avoid if the vessel operates in very harsh marine environments requiring higher ingress protection, needs a 50 Hz supply, or has strict weight/space constraints.

Use Cases: Typically installed as the main hotel‑load generator on container ships and cruise vessels, as an emergency power source on offshore platforms, or as a high‑capacity auxiliary set for LNG carriers where continuous, stable electricity is critical.

Datasheet

SR4B 1250kVA 690V 50Hz Marine unverified

· four‑pole marine synchronous generator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High insulation class H allows operation at elevated temperatures
Compact IP23 enclosure suitable for typical engine‑room installations
Proven Nidec Marine reliability and service network
Four‑pole design gives good low‑speed torque characteristics matching ship diesel engines

Weaknesses

IP23 rating provides limited protection against water ingress; not suited for harsh wet environments without additional shielding
Fixed 690 V output may require step‑up transformers for vessels standardising on higher voltages
Weight and mounting dimensions are typical of mid‑size generators, limiting use in very space‑constrained installations

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore support vessel

Decision Guide: Choose if you need a reliable mid‑size auxiliary generator with high temperature capability and a compact IP23 footprint on vessels that operate at 690 V or can accommodate step‑up conversion. Avoid if the installation requires a higher ingress protection rating (e.g., IP54+) or direct integration to higher voltage busbars without transformers.

Use Cases: Commonly installed as an auxiliary power source for hotel loads, emergency generators, and hybrid propulsion support on large commercial vessels where space is limited but robust, continuous operation is required.

Datasheet

SR4B 1250kVA 690V 60Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

1250

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

Brush‑less design eliminates slip rings and reduces routine maintenance.
Class H insulation permits higher operating temperatures, improving reliability in hot engine rooms.
Modular construction allows relatively easy installation and replacement on large vessels.
Four‑pole configuration provides good torque characteristics for direct coupling to prime movers.
IP23 enclosure is adequate for typical marine engine‑room environments while keeping the unit compact.

Weaknesses

IP23 rating offers only splash protection; not suitable for highly dusty or corrosive compartments.
Fixed 690 V, 60 Hz output limits use on vessels that operate on 50 Hz or lower voltage systems.
Physical size and weight are substantial, requiring dedicated space and structural support.
No built‑in redundancy; a single failure disables the entire 1.25 MVA output.
Requires a compatible prime mover (diesel engine) and control system; integration cost can be high.

Typical Vessels: Cruise shipContainer vesselBulk carrierOffshore supply vesselNaval auxiliary

Decision Guide: Choose if: you need a reliable >1 MVA generator at 690 V, prefer low‑maintenance brushless technology, and operate on a 60 Hz system. Avoid if: the installation requires higher ingress protection (IP44+), operates on 50 Hz or lower voltage, or space/weight constraints are critical.

Use Cases: The SR4B is typically installed as a main service generator on large passenger ships, container carriers and offshore support vessels, providing continuous propulsion‑auxiliary power and serving as an emergency source when paired with redundant sets.

Datasheet

SR4B 1500kVA 400V 50Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High efficiency (typical >94%) due to synchronous operation
Robust IP23 enclosure suitable for engine‑room environments
Insulation class H allows operation at elevated temperatures
Compact four‑pole design reduces footprint compared with larger low‑speed generators
Low maintenance – brushless construction eliminates commutator wear

Weaknesses

IP23 provides limited protection against dust and water ingress; not suitable for harsh external locations
Requires an external exciter or permanent magnet rotor, adding system complexity
Fixed 400 V output may need additional transformers for vessels with different bus voltages
Physical size and weight remain significant for small craft or retrofits
Cooling relies on forced ventilation; inadequate airflow can limit continuous rating

Typical Vessels: Large tankersContainer shipsCruise linersOffshore supply vesselsLNG carriers

Certifications: IMO Type ApprovalDNV GL Classification

Decision Guide: Choose if you need a high‑power, compact generator for new builds or major retrofits on large commercial vessels and you value low maintenance brushless technology. Avoid if the installation space is extremely limited, you require higher ingress protection (IP≥54), or the vessel operates on a different bus voltage that would necessitate additional conversion equipment.

Use Cases: The SR4B is typically installed alongside main propulsion diesel engines in large merchant ships to supply auxiliary power for hotel services, cargo handling systems, and emergency generators. It is also used in offshore platforms where reliable, high‑capacity electricity is required for drilling rigs and processing equipment.

Datasheet

SR4B 1500kVA 400V 60Hz Marine unverified

· marine synchronous generator

Power (kVA)

1500

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) suitable for medium‑size vessel main generators
Insulation class H provides good thermal endurance for continuous operation
Four‑pole design yields stable 60 Hz frequency with low vibration
Compact, integral alternator package simplifies installation on existing engine rooms
Nidec Marine reputation for reliability and worldwide service support

Weaknesses

IP23 enclosure offers only limited dust protection; additional shielding required in wet or spray‑prone areas
Designed for 400 V/60 Hz systems, limiting use on vessels that operate on 50 Hz or other voltage standards
Physical size and weight are relatively large compared with newer high‑speed generator sets
Requires periodic brush inspection/replacement if the model uses brushed exciter (common in many Nidec units)
Limited built‑in cooling; may need external ventilation fans in hot climates

Typical Vessels: TankerContainer shipBulk carrierOffshore supply vesselCruise liner (auxiliary power)

Decision Guide: Choose if: you need a proven 1500 kVA generator for a 400 V/60 Hz US‑type ship electrical system, value long‑term OEM support, and can accommodate the IP23 enclosure with additional protection. Avoid if: your vessel operates on 50 Hz or requires higher ingress protection (IP55+), or you need a compact high‑speed generator to save space.

Use Cases: The SR4B is typically installed as a main propulsion auxiliary generator on US‑flagged tankers and container ships, providing reliable shipboard power for cargo handling equipment, hotel services, and emergency loads. It is also used on offshore supply vessels where a robust, low‑maintenance source of 400 V power is required.

Datasheet

SR4B 1500kVA 690V 50Hz Marine unverified

· synchronous marine generator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (1500 kVA) suitable for large vessel hotel loads
Class H insulation allows operation at elevated temperatures
Four‑pole design provides stable frequency at 50 Hz
Compact IP23 enclosure reduces space requirements while protecting against splashing water

Weaknesses

IP23 rating offers limited protection against dust and water ingress; requires adequate ventilation
Fixed 50 Hz output – not suitable for vessels requiring dual‑frequency (60 Hz) capability
Large physical size and weight typical of high‑capacity generators, impacting installation space
Requires external cooling system integration

Typical Vessels: Container shipBulk carrierTankerCruise linerOffshore supply vessel

Decision Guide: Choose if: you need a high‑capacity, temperature‑tolerant generator for main or auxiliary power on large commercial vessels and have space for an IP23 enclosure with external cooling. Avoid if: the installation requires full dust‑tight protection (IP66+), dual‑frequency output, or weight/space constraints are critical.

Use Cases: Commonly installed as a primary auxiliary generator to supply hotel loads, emergency power, or propulsion support on large cargo and passenger ships where reliable high‑power generation is essential.

Datasheet

SR4B 1500kVA 690V 60Hz Marine unverified

· synchronous marine generator

Power (kVA)

1500

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density (1500 kVA) suitable for large ship service loads
Class H insulation allows operation in high temperature environments
Robust IP23 enclosure provides protection against dust and limited water spray
Integrated control and monitoring system compatible with common marine automation platforms
Proven track record from Nidec Marine (formerly Leroy‑Somer) for reliability on ocean‑going vessels

Weaknesses

Large physical footprint and weight require substantial engine room space
IP23 rating does not protect against heavy spray or immersion, may need additional shielding in harsh climates
Requires external sound attenuation to meet crew comfort standards on some vessel types
Higher initial capital cost compared with smaller, lower‑power alternatives
Limited voltage flexibility – fixed 690 V output may need step‑up/down transformers for certain distribution schemes

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vesselLNG/LPG carrier

Certifications: ABSDNV GLLR (Lloyd's Register)IMO Type Approval (D‑2)

Decision Guide: Choose if: you need a proven, high‑capacity auxiliary generator for large vessels with demanding service loads and can accommodate its size and cooling requirements. Avoid if: vessel space is limited, you require a lower voltage output, or the operating environment exceeds the protection level of an IP23 enclosure without additional shielding.

Use Cases: The SR4B is typically installed as part of a main auxiliary generator set to supply ship service power for propulsion auxiliaries, hotel loads, cargo handling equipment, and emergency power. It is also used in shore‑power conversion plants on large vessels where high reliability and compliance with classification societies are mandatory.

Datasheet

SR4B 2000kVA 400V 50Hz Marine unverified

· brushless synchronous generator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High continuous power output (2000 kVA) suitable for main hotel loads on large ships
Brushless design reduces maintenance intervals and eliminates brush wear
H‑class insulation allows operation in high ambient temperature environments
IP23 enclosure provides protection against solid objects, suitable for deck installation
Integrated control system with remote monitoring capability

Weaknesses

Large physical size and weight require substantial space and structural support
Requires an external cooling water circuit; not a self‑cooled unit
IP23 rating does not protect against direct water spray, limiting placement in harsh wet zones
Must be coupled to a dedicated diesel engine set, adding system complexity
Higher upfront capital cost compared with lower‑rated alternatives

Typical Vessels: Cruise shipContainer vesselOil tankerBulk carrierLNG carrier

Decision Guide: Choose if you need a reliable, high‑power (2 MVA) auxiliary generator for large commercial vessels and can accommodate its size, cooling water requirements, and deck‑mounting constraints. Avoid if vessel space is limited, you require a fully sealed (IP≥44) unit, or the budget does not allow for a higher‑cost brushless system.

Use Cases: The SR4B is typically installed as part of an auxiliary power plant on ocean‑going vessels to supply hotel services, cargo handling equipment, and emergency power. It is often paired with a diesel engine set in a dedicated generator room or deck enclosure on cruise ships, container carriers, and tankers where continuous high‑capacity electricity is essential.

Datasheet

SR4B 2000kVA 400V 60Hz Marine unverified

· brushless synchronous alternator

Power (kVA)

2000

Voltage (V)

400

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power output (2 MVA) in a compact footprint for 400 V/60 Hz systems
Brush‑less design reduces maintenance intervals and downtime
Class H insulation allows higher temperature operation and improved thermal margin
Four‑pole construction provides good stability at 1800 rpm, matching common marine diesel engines
IP23 enclosure meets standard marine environmental protection while allowing easy access for service

Weaknesses

IP23 rating offers limited protection against water ingress; additional sealing may be required in harsh or wet decks
Designed for 60 Hz only – not suitable for vessels operating on 50 Hz grids without conversion
Physical size and weight are substantial, requiring dedicated generator room space
Requires proper ventilation to maintain temperature limits of class H insulation
Standard configuration may need optional accessories (e.g., vibration isolators) for specific vessel installations

Typical Vessels: Container shipCrude oil tankerProduct tankerBulk carrierOffshore supply vesselCruise liner

Decision Guide: Choose if: you need a reliable 2 MVA, 400 V/60 Hz generator for US‑type vessels, prefer low‑maintenance brushless technology, and have adequate space and ventilation. Avoid if: the vessel operates on 50 Hz systems, requires higher IP protection (e.g., IP55) for exposed locations, or has strict weight/space constraints that demand a smaller unit.

Use Cases: The SR4B is typically installed as part of the main power plant on large merchant ships and offshore vessels where a high‑capacity, low‑maintenance generator supplies shipboard electricity, auxiliary services, and emergency loads. It is often coupled directly to medium‑speed diesel engines in the engine room.

Datasheet

SR4B 2000kVA 690V 50Hz Marine unverified

· brush‑less high‑speed alternator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – delivers 2 MVA in a relatively small footprint thanks to its 4‑pole high‑speed design.
Brush‑less construction reduces maintenance intervals and eliminates brush wear issues.
Class H insulation allows operation at elevated temperatures, improving reliability in harsh marine environments.
Integrated control electronics compatible with common shipboard automation systems (e.g., Nidec’s PowerControl).
IP23 enclosure provides protection against dust and limited water spray while keeping the unit lightweight.

Weaknesses

High rotational speed can increase vibration and acoustic noise compared to low‑speed generators.
IP23 rating does not protect against heavy splashing or immersion, limiting placement in wet zones.
Standard output voltage of 690 V may require step‑up transformers for vessels that operate on higher bus voltages.
Limited field experience documented publicly for this exact model; some operators prefer more widely proven series.

Typical Vessels: Container shipCrude oil tankerLNG carrier (auxiliary power)Cruise linerOffshore supply vessel

Decision Guide: Choose if you need a compact, high‑power auxiliary or main generator with low maintenance brush‑less technology and can accommodate the 690 V output. Avoid if your installation requires higher ingress protection (IP≥44) or a lower vibration profile, or if you prefer a proven model with extensive class approvals already documented.

Use Cases: Commonly installed as part of a dual‑generator set for main propulsion support on large commercial vessels, or as a high‑capacity emergency generator in cruise ships and offshore platforms where space is at a premium.

Datasheet

SR4B 2000kVA 690V 60Hz Marine unverified

· high‑speed marine alternator

Power (kVA)

2000

Voltage (V)

690

Frequency (Hz)

Poles

Enclosure

IP23

Insulation Class

Strengths

High power density – 2000 kVA in a relatively compact footprint
Class H insulation allows operation at elevated temperatures
Proven Nidec/Leroy‑Somer reliability and long service life
Standard 690 V output matches most marine distribution systems
IP23 enclosure provides adequate protection for typical engine‑room environments

Weaknesses

IP23 rating offers limited dust and splash protection; not suitable for harsher exposure
Designed for 60 Hz only, limiting use in regions requiring 50 Hz generators
Brush‑type construction may require periodic maintenance compared with brushless options
Noise and vibration levels higher than low‑speed, large‑diameter alternatives
Weight can be substantial, affecting installation flexibility on smaller vessels

Typical Vessels: Crude oil tankerContainer shipBulk carrierCruise linerOffshore supply vessel

Decision Guide: Choose if you need a high‑output (≈2000 kVA) generator that fits within standard engine‑room spaces, operates on 60 Hz systems, and you value proven Nidec reliability. Avoid if the installation requires higher ingress protection (IP55+), 50 Hz operation, or a brushless low‑noise solution.

Use Cases: The SR4B is typically installed as a main propulsion auxiliary generator on large commercial vessels where space is at a premium and a robust, high‑temperature capable alternator is required. It also serves as an emergency power source on cruise ships and offshore platforms that use standard 690 V marine distribution.

Datasheet