H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 71/00 (2006.01) H02H 3/06 (2006.01)
Patent
CA 2187058
A reclosing relay in accordance with the disclosed invention comprises a reclose initiate (RI) input and a drive to last reclosure (DTLR) input, and an output at which a close signal is provided to effect the reclosure of a circuit breaker associated with the reclosing relay. The reclosing relay is operative when it receives a first RI signal at its RI input to provide the close signal to the associated circuit breaker substantially immediately or with time delay as programmed by settings. The reclosing relay is operative when it receives a signal from a second RI contact at its DTLR input to provide the close signal to the circuit breaker only after synchronism is identified between the line voltages on either side of the associated circuit breaker.
Bouhenguel Redjem
Elmore Walter A.
Abb Power T. & D. Company Inc.
Gowling Lafleur Henderson Llp
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