Earth Continuity Monitoring Relay

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Earth continuity monitoring relay.

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 earth continuity monitoring system consists of a monitor remote module and monitor protection filter. The ecm3 relay is capable of monitoring earth continuity continuously and indefinitely when exposed to voltages up to 45vac on the pilot core with internal heating having no effect. Moni tors are available in two types of enclosure as described below.

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. The gcm 52 monitor is mounted in a compact plastic case and is connected via two molex plugs. The relay has been approved to be intrinsically safe and is suitable for use in zone 1 or 2 hazardous areas. Nhs specification monitored earth sockets.

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. Gcm 52 110 earth continuity monitor pilot wire control relays accessories switching systems pty ltd p o box 33457 jeppestown 2043 south africa tel. Earth continuity relay model i c. Complementary product categories.

A pilot cable is connected to earth via a diode the pcm177 detects open and short circuits between the pilot and earth conductors of. The bramco ic3 earth continuity relay is designed to actively monitor the resistance of the pilot earth cir cuit in a supply cable by diode termination. The pcm177 pilot cable monitor is an earth continuity relay. If however the pilot is coupled with higher voltages the relay s thermal overload trip begins to function.

It provides earth continuity protection in accordance with as nzs 2081 ensuring the earth connection through a trailing reeling cable is maintained. This is the preferred model for all new installations a typical applica. The ic3 utilises microprocessor technology to provide a greater level of stability over longer pilot cables by using digital filtering techniques. 27 0 11 624 3317 fax.

An earth continuity relay is designed to provide earth continuity protection. The thermal overload maintains an inverse time. Description the rob earth continuity relay has been designed to as 2081 2 1988 to monitor the earth continuity of a trailing cable in an underground mining operation.