NewElec’s GA earth leakage protection relay enables more sensitive earth leakage protection of high kilowatt motors started direct-on-line as well as variable speed drive applications without nuisance tripping. This is achieved by the use of harmonic filters. The GA is available in diverse configuration options, including latched or with a non-latching main trip contact, fail-safe or non fail-safe options, as well as 110 V – 220 V or 380 V – 525 V AC auxiliary supply voltages.
Two models are offered: the GA with a standard 74 mm x 134 mm cut-out; and the GA-ELX with an adaptor plate to fit a 71 mm x 94 mm cut-out.
GA relays provide harmonic suppression and isolation to IEC 255-5 App A. As a door mounted unit, the front control panel clearly displays, by means of suitably coloured LEDs, the user tripping curve selected, as well as the relay trip status.