Protection circuit for tap-grounded leakage transformer

Details Protection circuit for tap-grounded leakage transformer Protection circuit for tap-grounded leakage transformer

1999-01-06

2000-08-15

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transformer protection

361 35, 361 42, 361 45, 361 90, 315307, H02H 333

Patent

active

061045853

ABSTRACT:
Induced voltages of two tertiary coils magnetically coupled with two secondary coils, respectively, are detected separately by two voltage detector circuits, and the detected voltages V1 and V2 are compared by two comparators with a reference voltage VS. When wiring connected to either one of the two secondary coils or a neon tube is grounded, the induced voltage of the corresponding tertiary coil decreases, then the output from the corresponding comparator is reduced down to zero volt, then a light emitting element emits light, and a phototriac is turned ON to actuate a relay to turn OFF its contact switch, shutting off the supply of AC power.

REFERENCES:
patent: 4563719 (1986-01-01), Nilssen
patent: 5822201 (1998-10-01), Kijima
patent: 5892646 (1999-04-01), Parker et al.
patent: 5914843 (1999-06-01), Hopkins et al.

Affiliated with

Also associated with

Rating

Protection circuit for tap-grounded leakage 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 Protection circuit for tap-grounded leakage transformer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protection circuit for tap-grounded leakage transformer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2014021