Circuit interrupter apparatus with an integral trip curve...

H - Electricity – 02 – H

Patent

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H02H 3/04 (2006.01) G05B 19/10 (2006.01) H02H 3/00 (2006.01) H02H 3/093 (2006.01)

Patent

CA 1305245

Abstract A circuit interrupter includes a circuit arrangement for sampling a conditioned current value and determining operating characteristics related to the current flow through an electrical circuit. Also included is a circuit arrangement for comparing the operating characteristics to preselectable tripping parameters and initiating a trip condition when an operating characteristic exceeds a corresponding tripping parameter. Additionally, a fault indicating and selecting arrangement which utilizes a trip curve graph to assist in the operation of the circuit interrupter, is also included.

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