The Ampcontrol ELM is an Earth Leakage Relay designed for hard rock (metalliferous) mining applications.
The ELM V2 relay utilises a microprocessor design, providing a definite time operating characteristic with adjustable trip sensitivity and time delay. The relay latches when tripped and provides normally open and change-over relay contacts. The relay supports an external reset switch, and a 4-20mA interface allows external monitoring.
The ELM V2 Earth Leakage Relay is housed in a stainless steel case and can be either ‘DIN Rail’ or ‘Panel’ mounted through a 69 x 39mm IP56 ingress protected cut out. An attachment to prevent unauthorised adjustment of the trip settings is available separately.
The Ampcontrol ELM V2 earth leakage relay has been designed and approved for use on earth fault limited systems providing earth leakage protection (earth fault protection). The relay is also suitable for other applications where equipment or system earth leakage protection is required.