Ground fault circuit interrupter utilizing a single transformer

Details Ground fault circuit interrupter utilizing a single transformer Ground fault circuit interrupter utilizing a single transformer

H - Electricity

02

H

348/24

H02H 3/26 (2006.01) H02H 3/33 (2006.01)

Patent

CA 1063224

ABSTRACT OF THE DISCLOSURE A GFCI utilizes a single transformer in responding to ground faults on either of the line and neutral conductors of a distribution circuit. The transformer, a differential current transformer, has a secondary winding which is periodically strobed during a first sampling interval for the presence of a fault signal indicative of a line-ground fault. During a second sampling interval, a negative resistance network sets up a ringing oscillation in the transformer secondary circuit. If the neutral conductor is grounded through a low impedance ground fault, the oscillation is damped, and circuit interruption is initated. Absent a low impedance ground fault on the neutral con- ductor, the oscillation amplitude increases to exceed a predetermined threshold level during the second sampling interval, and circuit interruption is not initiated.

254585

Affiliated with

Also associated with

Rating

Ground fault circuit interrupter utilizing a single 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 Ground fault circuit interrupter utilizing a single transformer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground fault circuit interrupter utilizing a single transformer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-183332