H - Electricity – 02 – H
Patent
H - Electricity
02
H
354/26
H02H 3/08 (2006.01) H02H 3/00 (2006.01) H02H 3/26 (2006.01)
Patent
CA 2010168
An overcurrent protection device is provided for one or more phases of a circuit that generates a control signal dependent upon an adjustable trip level setting after a fault has occurred. The device includes a blocking level detector that blocks the generation of the control signal if the current in any of the phases exceeds either a first predetermined blocking level or the adjustable trip level setting. In a preferred arrangement, before control-signal generation, the device also requires that the current in at least one phase is below a predetermined load level.
Mugalian Brian P.
Zulaski John A.
Osler Hoskin & Harcourt Llp
S&c Electric Company
S. & C. Electric Company
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