Main switchboard (MSB)
Switchboard where the main generators are connected and paralleled and from which power goes to all consumers.
In 9 languages
| Language | Term |
|---|---|
| English | Main switchboard (MSB) |
| Russian | Главный распределительный щит (ГРЩ) |
| Romanian | Tablou principal de distribuție |
| Polish | Rozdzielnica główna |
| Latvian | Galvenais sadales skapis |
| Filipino | Main switchboard (MSB) |
| Indonesian | Panel hubung utama (MSB) |
| Chinese | 主配电板 |
| Croatian | Glavna rasklopna ploča |
Find it in the manuals All terms
Related terms
Shore power (shore connection)Supply from the shore during dry dock or lay-up; phase sequence and voltage are checked before closing the shore breaker.Circuit breaker (ACB / MCCB)Switch that opens automatically on overload or short circuit; generator breakers also trip on reverse power.Insulation resistance and meggerResistance between a conductor and earth, measured with a megger at 500 V DC; a falling trend warns of damp or damaged insulation.Earth fault (ground fault)Contact between a live conductor and the hull; on insulated systems the earth lamps or monitor show it and the circuit is found by isolating feeders one by one.Synchronising and load sharingMatching voltage, frequency and phase of an incoming generator before closing its breaker, then sharing the load between running sets.Preferential tripOn generator overload, non-essential consumers such as galley and air conditioning are switched off in stages to avoid a blackout.Alarm and monitoring system (AMS)Collects signals from sensors across the engine room, shows values and raises alarms; it allows an unmanned engine room at night.Pressure transmitter (4–20 mA)Turns pressure into a 4–20 mA signal for the alarm system; zero and span are checked against a test gauge.