Earth Continuity Relay

Earth continuity failure protection.

Earth continuity relay. Due to a fault in the distribution system or line or if the power to the area is switched off for any reason the supply to the transformer and thus to the pilot circuit will cease. The ampcontrol earth continuity relay ensures safety and as nzs2081 compliance through a new method of earth continuity protection that uses a trip curve to discriminate between earth disconnection faults and incremental increases in the earth return impedance that occurs due to equipment degradation. As such the operating relay and the contactor will therefore open. An earth continuity relay is designed to provide earth continuity protection.

The method used is called pilot earth loop or earth continuity monitoring where an additional core pilot cable is included with the power and earth cores in the trailing or reeling cables which supply power to the machines. We took a fresh look at earth continuity safety and as nzs2081 compliance to design a new method of earth continuity protection that utilises a trip curve to discriminate between earth disconnection faults and incremental increases in the earth return impedance. The ic3 utilises microprocessor technology to provide a greater level of stability over longer pilot cables by using digital filtering techniques.