Ampcontrol remains at the top of the field for innovation in earth continuity protection relay design.
Earth continuity protection relay.
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 ic3 utilises microprocessor technology to provide a greater level of stability over longer pilot cables by using digital filtering techniques.
Earth continuity failure protection.
The control interface is the central unit of the epoch protection system and is the integral component that brings together the full protection functionality to each outlet.
The ecm2 relay is normally installed in a substation or a distribution box to provide earth continuity protection.
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.
It performs the as nzs 2081 2011 earth continuity protection function on the outlet as well as receive and process the signals from the power interface.
Earth leakage relays perform two main functions on mining installations.
An earth continuity relay is designed to provide earth continuity protection.
In the typical distribution circuit shown in fig 1 an earth leakage relay provides protection against leak age to earth and earth faults.
Now let us look at fig.
The ecm2 relay continually monitors the earth continuity of a mining trailing cable.
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.
When short circuit between the pilot and earth cores in the trailing cable completes the circuit through the operating relay and if the pilot circuit were not to fail to safety such a fault would cause the motor to start immediately.
As nzs2081 requires that earth continuity protection be capable of operating within 100ms to quickly protect an outlet in case of live uncoupling.
A01366 earth continuity relay non i s.
I c3 download datasheet combined protection relays a00622b earth leakage earth continuity relay elec download datasheet.
To protect machinery from damage and to make the in stallation safer for personnel.
