Ecm3 Earth Continuity Relay

Earth continuity protection is provided using pilot earth loop or earth continuity monitoring.

Ecm3 earth continuity relay. Brochure technote alertnote image. Ampcontrol remains at the top of the field for innovation in earth continuity protection relay design. Earth continuity relay ampcontrol s mec 1 is a cost effective earth continuity relay compliant to as nzs2081 2011 which is typically installed in a substation or distribution box. In practical applications environmental factors often prevent an earth continuity protection system from complying with both requirements of as nzs 2081 and as nzs 4871.

It provides earth continuity protection in accordance with as nzs 2081 2011 ensuring the integrity of the earth connection through a trailing or reeling cable is maintained. The ecm3 relay monitors a low voltage dc signal applied between the pilot and earth of the cable and by measuring this signal determines the resistance of the pilot earth loop. The ecm2 earth continuity relay has been designed to monitor the earth continuity of trailing and reeling cables supplying power to mobile machines where there is not a requirement to comply with as2081. 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. Ecm3 earth continuity relay elm earth leakage relay. 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 ecm3 is an earth continuity protection relay designed with as nzs 2081 2011 and as nzs 4871 1 2012 in mind.

It has superior touch potential monitoring and noise immunity and overcomes the performance degradation experienced by the emc2 when exposed to significant pilot noise find out more about the ecm3. Embodied in ampcontrol s ecm3 this innovation is game changing. 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 method used is called pilot earth loop or earth continuity monitoring where an additional core the pilot core is included with the.

The mec 1 earth continuity relay is an electrical protection relay designed for operation in metalliferous mining applications. Ampcontrol s ecm3 relay has been designed to provide earth continuity protection for cables containing pilot cores.