​PRIMACY ENGINEERING INC.

Marine Engineering System Design & System Integration Services

Switchboards

Switchboards for the LSF-II is the craft’s primary power distribution system that distributes 208/120 VAC, 400 Hz, 3 Phase power or 28 VDC from its power sources to the craft’s systems. Primary power is provided from two APU (auxiliary powered unit) generators while secondary DC power is provided from either the storage batteries or TRU (Transformer Rectifier Unit) which converts the 208 VAC to 28 VDC. The switchboard and panel system is designed to protect itself and its generators from damage that might otherwise be caused by faults in the system or connected equipment.