Solid-state trip device comprising an instantaneous tripping cir

Details Solid-state trip device comprising an instantaneous tripping cir Solid-state trip device comprising an instantaneous tripping cir

1989-01-27

1990-04-03

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 86, 361 95, H02H 3093

Patent

active

049145410

ABSTRACT:
In a system-powered solid-state trip device, the measurement voltage Vm, representative of the current flowing in the conductor to be protected and applied to the input of an electronic processing unit, can also be applied to the cathode of a thyristor connected in series with the trip coil and receiving on its gate, the tripping orders from the processing unit. A Zener diode is connected between the thyristor gate and the ground so as to set an instantaneous tripping pick-up of the trip device. In this way, a short-circuit in the conductor causes instantaneous tripping of the circuit breaker independently from the value of the supply voltage.

REFERENCES:
patent: 3786311 (1974-01-01), Hobson, Jr. et al.
patent: 4060844 (1977-11-01), Davis et al.
patent: 4068283 (1978-01-01), Russell

Affiliated with

Also associated with

Rating

Solid-state trip device comprising an instantaneous tripping cir does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Solid-state trip device comprising an instantaneous tripping cir, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid-state trip device comprising an instantaneous tripping cir will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1362065