Main Switchboard (MSB) · Power Distribution
Low Voltage Switchgear by Kongsberg Maritime AS is a low-voltage power-distribution switchgear system used to receive, sectionalise, protect and distribute electrical power on board. It is normally installed as a main or auxiliary switchboard in an electrical room or engine-control area with feeds from generators, transformers and large consumers. The assembly combines busbars, circuit breakers, protection relays, metering, interlocks and control interfaces required by the vessel's distribution philosophy. Marine switchgear must remain mechanically secure under vibration and must preserve segregation and safe access for operators during normal and emergency operation. The exact arrangement is project-specific because bus sections, generator incomers, tie breakers and feeder types depend on the vessel's single-line diagram. Neighbouring Kongsberg power products such as segment protection and energy-control functions operate around the switchgear rather than replacing its primary power-distribution hardware.
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What our service work and the manufacturer documentation say about keeping this model running.
Inspect and clean switchboard compartments, busbar joints, breaker mechanisms, cable terminations, earthing and ventilation according to the approved maintenance plan. Exercise breakers and test protection, interlocks, synchronising and emergency functions using the vessel's approved procedures. Thermal scanning and insulation testing are useful condition checks when permitted by the switchboard design and safety rules. Class survey attention includes protection settings, breaker tests, insulation condition, segregation and updated single-line documentation; refer to the manufacturer documentation for the exact figure.
Carry breaker control coils or mechanism parts used by the installed design, protection/control fuses, indication lamps, auxiliary relays, cooling fans and selected electronic modules. For essential feeders, retain a compatible spare breaker or withdrawable unit where the vessel's redundancy plan requires it.
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