Current adaptive fault indicator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jul 2, 1991
Grant Date -
N/A
app pub date -
Aug 7, 1989
filing date -
Aug 7, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A 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.
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