Static overcurrent relay

Details Static overcurrent relay Static overcurrent relay

H - Electricity

02

H

348/26

H02H 3/08 (2006.01) H02H 6/00 (2006.01) H02H 7/06 (2006.01)

Patent

CA 1058740

ABSTRACT OF THE DISCLOSURE A solid state protective device is disclosed which protects electrical apparatus from heat damage due to overcurrents, particularly one which protects electric generators from damage caused by heat due to excessive negative phase sequence currents. The device includes a novel reset feature such that the time required for the device to take protective action after an overcurrent is detected is reduced by a period of time which is a linear function of the heat remaining in the protected apparatus due to any prior overcurrents.

234736

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