H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 3/44 (2006.01) G01R 19/165 (2006.01) G01R 31/08 (2006.01) H02H 3/04 (2006.01)
Patent
CA 2064834
2064834 9102395 PCTABS00003 The disclosed fault indicator which senses current in a cable, resets in response to a minimum current and arms a trip arrangement in response to current rising a predetermined amount with respect to time. If the rising current also opens a circuit breaker within a predetermined time and cuts off current to the cable, the indicator trips. If no zero current occurs within the time period, the trip arrangement is disarmed for the next current rise.
Yeh Thomas
Sigma Instruments Division
Swabey Ogilvy Renault
LandOfFree
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