A switchboard is an electrical device used to distribute and control electrical energy in a circuit and is usually installed in the electrical systems of various facilities.
The switchboard provides a variety of protection functions, such as generator overload and short circuit protection, overvoltage and undervoltage protection, reverse power protection, generator quasi-synchronous paralleling protection, etc. These protection measures ensure the safe operation of the system under various conditions.
Switchboards are widely used in industrial facilities, commercial buildings and residences, and are especially important in ship power systems. They are not only used for power distribution, but also for terminal power protection, power metering, etc.