Selective electronic trip unit, a circuit breaker comprising suc

Details Selective electronic trip unit, a circuit breaker comprising suc Selective electronic trip unit, a circuit breaker comprising suc

1998-03-27

2000-10-24

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Feeder protection in distribution networks

H02H 300

Patent

active

061376655

ABSTRACT:
A selective electronic trip unit comprises at least one current sensor supplying a secondary signal representative of a primary current, a first detection circuit to detect a first overshoot of a first threshold, and a second detection circuit to detect signals representative of contact repulses interrupting the primary current, said first and second detection circuits receiving the secondary signal. An analysis circuit connected to the second detection circuit disables instantaneous tripping of the trip unit if the signals representative of repulses are representative of currents lower than a second threshold.
Application, in particular to selective circuit breakers.

REFERENCES:
patent: 4644438 (1987-02-01), Puccinelli et al.
patent: 4733321 (1988-03-01), Lindeperg

Affiliated with

Also associated with

Rating

Selective electronic trip unit, a circuit breaker comprising suc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Selective electronic trip unit, a circuit breaker comprising suc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selective electronic trip unit, a circuit breaker comprising suc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1971072