Earth Continuity Relay

Ampcontrol remains at the top of the field for innovation in earth continuity protection relay design.

Earth continuity relay.

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 bramco electronics earth continuity relay model i c has been designed to monitor the continuity of the earth cir cuit in a supply cable by grounding the pilot core via a diode polarized positive to earth. 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 ic3 utilises microprocessor technology to provide a greater level of stability over longer pilot cables by using digital filtering techniques.

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. 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. An earth continuity relay is designed to provide earth continuity protection.