Pump, compressor motor protection relays

October 18th, 2013, Published in Articles: Vector

NewElec’s KE range of microprocessor-based motor protection relays is ideally suited for motors used in air-conditioning, compressor, machine, conveyor, pumps and crusher applications. With a small footprint, the KE relays feature integrated CTs up to 50 A with extendable current ranges using interposing CTs. A door mounted MMI, fitted with an infrared sensor, permits access to the relay settings. Improved protection benefits include earth insulation lockout (prior to starting the motor) and earth leakage protection may be selected as instantaneous or IDMT with sensitivities in the range from 30 to 1000 mA. The relays offer an array of features related to dry-run protection, such as user-selectable priming time, dry run detection by power factor measurement or current only, as well as optional user-selectable automatic motor re-start with delay timer on dry load trips.

Contact Luc Dutrieux, NewElec, Tel 012 327-1729, sales@newelec.co.za

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