Fault protection device in a transformer

Details Fault protection device in a transformer Fault protection device in a transformer

1997-09-10

1998-12-08

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transformer protection

361 38, 361 78, H02H 704

Patent

active

058479104

ABSTRACT:
A fault protection device incorporated in a transformer having a primary winding and at least two secondary windings connected to ground, and having a sensing coil to sense the fluxes generated by each of the secondary windings and generating a flux signal when an imbalance in the fluxes in the secondaries is detected and in which the sensing coil is in the form of at least two sensing coil portions, the sensing coil portions being positioned near but spaced from the sides of the secondary windings, the flux signal being constituted by a voltage induced in the sensing coil by fluxes produced by the secondary windings, and a switch connected to the sensing coil and connected in series with a power supply and at least one terminal of the primary winding, the switch being conditioned to an open condition in response to the flux signal to isolate the primary winding from the power supply.

REFERENCES:
patent: 3863109 (1975-01-01), Emanuel et al.
patent: 4241324 (1980-12-01), Douglass et al.
patent: 4400675 (1983-08-01), Thomas
patent: 4488136 (1984-12-01), Hansen et al.
patent: 4562384 (1985-12-01), Owen
patent: 5168422 (1992-12-01), Duncan
patent: 5241443 (1993-08-01), Efantis

Affiliated with

Also associated with

Rating

Fault protection device in a transformer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fault protection device in a transformer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fault protection device in a transformer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-184294