CURRENT TRANSFORMER AND PHASE UNBALANCEDETECTORThe system has a current transformer and a phase unbalance detectorwhich protect the electric circuit of the electric pump. When there isa fault, the detector gets a signal from the current transformer. It usesthis signal to stop the supply of power to relay and thus stop the motor.When the unit has operated, it stays in that condition until it is setagain. This happens automatically when the supply of power to theunit is stopped (through operation of P/BSW HYD/YELLOW/ELECPUMP) and then started again (and there is no fault signal from thecurrent transformer).