Voltage Relays

Operations of the relay can be tested by means of a test, button which energies the output relays & LED’s after set time delay with the channels set to underover frequency operation. Access to the test push button requires removal of the front cover. This test facility should normally only be used with the relay trip circuits isolated, ARMO UFT frequency relays are used to monitor the frequency of an electrical system. Due to inadvertent splitting of inner connection in power system, isolated areas of the system may become deficient in the generation & frequency of the same may drop considerably giving rise to emergency conditions.