• E Power Engineering

Over Current & Earth Fault Relay

The over current and earth fault relay, Model MK 1000A, is a product manufactured by Mikro, Malaysia. It is a combined over current and earth fault relay. This digital relay is microprocessor based and has four characteristic curves of normal inverse, long-time inverse, very inverse, and extremely inverse curves. It has both low set and high set settings for both over current and earth fault. A local display of all the measured and set values as well as fault recording is enabled. MK 1000 has a current rating of 5 A and a burden less than 0.3 VA with a rated frequency of 50/60 Hz. The material used for the contacts is of silver alloy, which follows the ?change-over? contact arrangement. The contact rating is 5 A, 250 V AC. It has a long-term electrical life of 100,000 operations and an enduring mechanical life of 5 x 106 operations. Mainly the operating time for this relay is 10 milliseconds maximum. The dimensions of this protection relay are 96 x 96 mm with the approximate weight of 1 kilogram. It is panel mounted and the front panel complies with the standard of DIN.