PHASE FAILURE & SEQUENCE RELAY W/ADJUST FOR TRIPPING VOLT

The TSV-NA detects the phase sequence and failure of a 3-phase 4-wire supply. The relay operates normally when phase sequence R-Y-B is correct and phase voltages are as rated. It will not ON if sequence is incorrect and will TRIP when one of the phase voltages drops below the set voltage. The unit has an adjustment to allow for proper operation in areas where the normal supply voltage is lower than the standard voltage. This relay is suitable for mains, gen-set boards or motor-starter boards single phasing and phase sequence protection.

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