Autoranging faulted circuit indicator

Details Autoranging faulted circuit indicator Autoranging faulted circuit indicator

1990-08-24

1993-10-19

Stephan, Steven L.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

H02H 300

Patent

active

052551482

ABSTRACT:
The disclosed fault indicator which senses current in a cable, resets in response to a minimum current and trips when the current exceeds a predetermined multiple above the average value of the current. A trip circuit senses the average value by periodic current sampling or by continuous current averaging. Maximum and minimum trip setting limit the excursion of the multiple of the average value.

REFERENCES:
patent: 4631625 (1986-12-01), Alexander et al.
patent: 4984124 (1991-01-01), Yeh
patent: 5029039 (1991-07-01), Yeh

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