Circuit breaker with digital solid-state trip unit with...

Details Circuit breaker with digital solid-state trip unit with... Circuit breaker with digital solid-state trip unit with...

H - Electricity

02

H

348/26, 348/36

H02H 3/093 (2006.01) H02H 3/00 (2006.01)

Patent

CA 1241730

Abstract CIRCUIT BREAKER WITH DIGITAL SOLID-STATE TRIP UNIT WITH OPTIONAL FUNCTIONS Digital solid-state trip unit designed to provide protection against phase faults, notably overloads and short-circuits and optional functions, in this case ground fault protection and load shedding and restoring functions. Two parameter input switches (72, 74) are assigned to the optional functions to display, in the ground protection option the ground protection pick-up and the ground protection time delay, and in the load shedding option, the load restoring pick-up and the load shed- ding pick-up. Each option has a software program stored in a non-volatile memory corresponding to it. Refer to figure 2.

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