Ground fault defeat cable for high current static trip circuit b

Details Ground fault defeat cable for high current static trip circuit b Ground fault defeat cable for high current static trip circuit b

1978-01-19

1978-12-05

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 28R, G01R 3102

Patent

active

041288041

ABSTRACT:
A high current field test set is electrically connected to pass test currents of overcurrent proportions through a single pole of a multipole static trip circuit breaker. The normal electrical connections between the breaker phase and neutral current sensing transformers and the static trip unit are made via a ground fault defeat cable which serves to automatically route the phase current monitoring signals produced by the test currents and fed to the appropriate trip unit phase overcurrent signal processing network through two primary windings of the ground fault sensing differential current transformer in opposite directions, thereby inhibiting a ground fault trip function.

REFERENCES:
patent: 3678372 (1972-07-01), Elder
patent: 3894284 (1975-07-01), Morrison
patent: 3919504 (1975-11-01), Crosley

Affiliated with

Also associated with

Rating

Ground fault defeat cable for high current static trip circuit b does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ground fault defeat cable for high current static trip circuit b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground fault defeat cable for high current static trip circuit b will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-288567