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 through the use of harmonic filters. The GA is available in diverse configuration options. These include latched; non-latching main trip contact; fail-safe; non fail-safe; and 110–220 V or 380–525 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 adapter plate to fit a 71 mm x 94 mm cut-out. The relays provide harmonic suppression and isolation to IEC 255-5 App A. The front control panel is a door mounted unit and clearly displays the user tripping curve selected as well as the relay trip status by means of suitably coloured LEDs.
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