Electronic system for high amperage circuit interruption apparat

Details Electronic system for high amperage circuit interruption apparat Electronic system for high amperage circuit interruption apparat

1983-05-09

1984-12-04

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 96, 340644, 340594, H02H 3093

Patent

active

044868030

ABSTRACT:
An electronic system for a high amperage molded case circuit breaker employing a voltage to frequency converter circuit for transforming fault current levels to a number of pulses corresponding to the fault level. The pulses are applied to a long time delay and short time delay circuit respectively which integrates the pulses to provide an output in a time period inversely proportional to the fault level. The long time circuit is provided with a second stage activated for a selected time by each output of the respective first stage to further count the pulses and provide a long time delay output in a time period inversely proportional to the square of the fault current. A variable resistance power supply provides a fixed voltage drop across the current transformer output to facilitate changes in breaker rating with a simple rating resistor change. A bimetal switch is also employed to sense the temperature adjacent the breaker contacts.

REFERENCES:
patent: 4000446 (1976-12-01), Vandevier et al.
patent: 4259706 (1981-03-01), Zocholl
patent: 4327391 (1982-04-01), Grzebielski
patent: 4377837 (1983-03-01), Matsko et al.

Affiliated with

Also associated with

Rating

Electronic system for high amperage circuit interruption apparat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic system for high amperage circuit interruption apparat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic system for high amperage circuit interruption apparat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1585770