Main Switchboard (LV)
medium
4 models total
Low-voltage main switchboards (380-690V) for vessel electrical distribution
4 manufacturers · 4 models
ABB
1
MNS
Up to 690V, 6300A
· Electrical Power Distribution
· LV Main Switchboard
Voltage
380-690V
Type
LV Main Switchboard
Common Failures & Inspection Points
- ACB trip mechanism failure
- Busbar connection loosening from vibration
- Insulation breakdown
- Metering CT failure
Service: Torque-check busbar connections annually. ACB maintenance per ABB schedule. Clean with dry air. IR scan for hot spots.
Spare Parts: Ersatzteile über ABB oder zugelassene Vertriebspartner. Lead time: 2-6 Wochen.
Hyundai Electric
1
HiMSEN Marine Switchboard
Up to 690V, 5000A
· Electrical Power Distribution
· LV Main Switchboard
Voltage
440-690V
Type
LV Main Switchboard
Common Failures & Inspection Points
- PMS communication error
- Generator breaker sync failure
- Busbar overheating
Service: Integrated with HiMSEN engine control. Korean-built fleet standard. Annual insulation test and busbar check.
Spare Parts: Ersatzteile über Hyundai Electric oder zugelassene Vertriebspartner. Lead time: 2-6 Wochen.
Schneider Electric
1
Prisma SeT
Up to 690V, 4000A
· Electrical Power Distribution
· LV Main Switchboard
Voltage
380-690V
Type
LV Main Switchboard
Common Failures & Inspection Points
- MCCB trip coil failure
- Busbar support insulator cracking
- Earth fault relay nuisance tripping
Service: Form 4 separation standard for marine. Clean and inspect annually. Replace MCCB at end of electrical life.
Spare Parts: Ersatzteile über Schneider Electric oder zugelassene Vertriebspartner. Lead time: 2-6 Wochen.
Siemens
1
SIVACON S8
Up to 690V, 6300A
· Electrical Power Distribution
· LV Main Switchboard
Voltage
380-690V
Type
LV Main Switchboard
Common Failures & Inspection Points
- Withdrawable unit interlock failure
- Busbar insulation aging
- Relay malfunction
- Ventilation fan failure
Service: Type-tested assembly. Withdrawable units for safe maintenance. Annual thermographic survey recommended.
Spare Parts: Ersatzteile über Siemens oder zugelassene Vertriebspartner. Lead time: 2-6 Wochen.