Combined Voltage and Frequency Relay provide continuous surveillance of the monitored circuit . When the voltage or frequency moves outside the set point limit the respective relay will operate giving an alarm, control or tripping signal . An illuminated LED indicates when the relay is energised . Other features of this device are : - Adjustable setpoint - Adjustable time delay - Internal differential - LED trip indication - Double pole relay contacts - Automatic reset Bornika is the exclusive agent of Ziegler company in the fields of consultation , sales and distribution of power industry products including Combined Voltage and Frequency Relay .
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