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.
Ecm3 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 ic3 utilises microprocessor technology to provide a greater level of stability over longer pilot cables by using digital filtering techniques.
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.
Ampcontrol is a leading supplier of earth leakage relays for a range of mining industrial and infrastructure applications.
An earth continuity relay is designed to provide earth continuity protection.
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 mec 1 earth continuity relay is an electrical protection relay designed for operation in metalliferous mining applications.
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.
Brochure technote alertnote image.
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.
Ampcontrol is also an expert in managing vsd generated earth leakage current in fault limited systems and.
Earth continuity protection is provided using pilot earth loop or earth continuity monitoring.
Ampcontrol remains at the top of the field for innovation in earth continuity protection relay design.
The ecm3 is an earth continuity protection relay designed with as nzs 2081 2011 and as nzs 4871 1 2012 in mind.
Ecm3 earth continuity relay elm earth leakage relay.
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.
Embodied in ampcontrol s ecm3 this innovation is game changing.
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.
