UNDER & OVER VOLTAGE RELAY WITH SPARE CONTACT FOR 3PH 3-WIRE

The DUOV-R monitors under and over-voltage of balanced 3-phase 3-wire mains. The relay trips if the voltage of the monitored mains drops below or rises above the respective preset points. If the mains voltages are unbalanced it will take the sum of the three individual phase voltages as reference. There are 2 separate sets of contacts; one for under voltage (11-14-12) and one for over voltage (21-24-22) trip controls. There are also 2 amber LEDs to indicate the normal condition. For under or over voltage trip condition, the corresponding LED will go off and the corresponding relay will de-energize.

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