Protective means for series capacitors

Details Protective means for series capacitors Protective means for series capacitors

1982-07-02

1984-02-14

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Capacitor protection

361 57, 361 94, 361103, 361105, H02H 716

Patent

active

044320299

ABSTRACT:
A protective means for a series capacitor in a high-voltage network comprises a voltage-dependent resistor (varistor) arranged in parallel with the series capacitor, a spark gap arranged in parallel with the varistor for shunting the latter when it becomes overloaded, a current-sensing member, for example a current transformer, for sensing the current through the varistor, an energy absorption detector for sensing the temperature of the varistor, and a pulse transformer electrically or magnetically connected to the current-sensing member, for triggering the spark gap. During normal operation of the network and the series capacitor the current-sensing member is short-circuited by a normally closed switching device. This switching device is controlled by the energy absorption detector in such a way that the switching device is opened if the temperature of the varistor exceeds a predetermined level, whereby a trigger pulse, generated directly by the varistor current via the current-sensing member and the pulse transformer, may pass to the spark gap.

REFERENCES:
patent: 3656045 (1972-04-01), Frezzolini et al.
patent: 3670175 (1972-06-01), Petersen et al.
patent: 3707650 (1972-12-01), Innis et al.
patent: 4002948 (1977-01-01), Gary et al.
patent: 4121270 (1978-10-01), Peterson
patent: 4174529 (1979-11-01), Hamann
patent: 4259704 (1981-03-01), Hamann

Affiliated with

Also associated with

Rating

Protective means for series capacitors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Protective means for series capacitors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protective means for series capacitors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2377956