Main Switchboard (MV)
medium
Medium-voltage main switchboards (3.3-11 kV) for large vessel power distribution
Known Models (1)
ABB UniGear ZS1
Up to 12 kV, 4000A
· Electrical Power Distribution
· AIS MV Switchboard
voltage: 3.3-12 kV
type: AIS MV Switchboard
Common Failures:
- • Circuit breaker mechanism failure
- • Busbar insulation degradation
- • CT/VT calibration drift
- • Arc flash from contamination
Service: Annual insulation resistance test. Clean busbars at drydock. Breaker mechanism service every 5 years. Arc-resistant design to IEC 62271.
Spares: Ersatzteile über ABB oder zugelassene Vertriebspartner. Lead time: 2-6 Wochen.