Time delay undervoltage release

Details Time delay undervoltage release Time delay undervoltage release

1984-11-02

1986-12-23

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 92, 361114, H02H 3247

Patent

active

046316248

ABSTRACT:
A time delay undervoltage release for an electric circuit breaker causes the circuit breaker to trip when the control voltage drops below an acceptable level and prevents the breaker from being closed until the control voltage rises to a predetermined level. When the control voltage drops below an acceptable level, the undervoltage release energizes a trip solenoid to trip the breaker. A variable delay is interposed between the control voltage dropping below the acceptable level and the trip solenoid being energized. At the same time the trip solenoid is energized, an inhibit solenoid is deenergized to block the operation of the push-to-close button. When the control voltage increases to a predetermined level, the inhibit solenoid is energized, allowing the push-to-close button to be manually operated and the breaker returned to service.

REFERENCES:
patent: 3740738 (1973-06-01), Kosanovich et al.
patent: 3818276 (1974-06-01), Jacobs
patent: 4025823 (1977-05-01), Lang et al.

Affiliated with

Also associated with

Rating

Time delay undervoltage release does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Time delay undervoltage release, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time delay undervoltage release will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-175507