Gresham Power Electronics
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A Helicopter Starting/Servicing System typically consists of a Transformer Rectifier unit (TRU), a Static Frequency Converter (SFC), contactor boxes, control panels, socket boxes and cables.
The Transformer Rectifier Units used for shipboard helicopter starting applications have three basic modes of operation:
The Static Frequency Converters supply the helicopter with 200V, 3ph, 400Hz with high overload capability.
Contactors are typically used to control the outputs of the power equipment to the helicopter. They can be incorporated into the power equipment or supplied in separate enclosures.