Timing circuit for an overcurrent relay

Details Timing circuit for an overcurrent relay Timing circuit for an overcurrent relay

H - Electricity

02

H

348/26, 348/36

H02H 3/093 (2006.01)

Patent

CA 1159943

TIMING CIRCUIT FOR AN OVERCURRENT RELAY ABSTRACT OF THE DISCLOSURE A timing circuit for use in an overcurrent relay is disclosed. A plurality of non-interacting R-C circuits whose outputs are summed is provided. The signal representing the summed outputs of the R-C cir- cuits represents one term of the inverse time-current relation it is desired to emulate. Each time the summed signal reaches a predetermined level, a pulse is generated. The frequency of the pulses determines the length of a time delay before the protected circuit is interrupted. When it is necessary to take the second term of the time- current relation into account, this can be done by providing a multivibrator that emits pulses of an adjustable duration responsive to the summed signal and that itself triggers the generation of the pulse train constituting the timing circuit output.

408197

Affiliated with

Also associated with

Rating

Timing circuit for an overcurrent relay does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Timing circuit for an overcurrent relay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Timing circuit for an overcurrent relay will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-441576