Circuit improvement apparatus having combination current limitin

Details Circuit improvement apparatus having combination current limitin Circuit improvement apparatus having combination current limitin

1989-10-30

1991-05-28

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361104, 361105, H02H 308

Patent

active

050199374

ABSTRACT:
A current interrupting apparatus adapted to be interposed in either a single or multiple phase electrical circuit includes a fuse interposed in each phase of the circuit. A current interrupter is electrically connected in series with each fuse for interrupting the current through the circuit, each current interrupter including a pair of normally closed electrical contacts and structure for opening the pair of contacts in response to a fault current of a magnitude different from the magnitude of current necessary to cause fusing of the fusible element of the fuse. A current interrupter triggering circuit is included in the apparatus for triggering operation of the contact opening structure of all of the current interrupters in response to fusing of the fusible element of any of the fuses to protect the circuit from the effects of single phasing. The current interrupter triggering circuit includes a solenoid electrically connected in parallel with each fuse and operable upon fusing of the fusible element of the fuse to trigger operation of the contact opening structure of all of the current interrupters.

REFERENCES:
patent: 3863187 (1975-01-01), Mahieu et al.
patent: 3987340 (1976-10-01), Kussy
patent: 4322706 (1982-03-01), Thrash
patent: 4323871 (1982-04-01), Kamp et al.
patent: 4413246 (1983-11-01), Westrom et al.
patent: 4806898 (1989-02-01), Osborne

Affiliated with

Also associated with

Rating

Circuit improvement apparatus having combination current limitin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit improvement apparatus having combination current limitin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit improvement apparatus having combination current limitin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-39905