Method and apparatus for a power circuit breaker controller

Details Method and apparatus for a power circuit breaker controller Method and apparatus for a power circuit breaker controller

1975-05-29

1977-01-04

Miller, J. D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

317 11A, 307133, H01H 716

Patent

active

040016439

ABSTRACT:
A power circuit breaker controller and its method of use. Surge voltages associated with the closing of a high voltage circuit breaker for a polyphase alternating current line are lowered substantially by our invention. Although several lines and phases are involved, each is considered and operated independently of the other. All lines have preinserted closing resistors, to reduce the surge voltages, that are preinserted in parallel across the main contacts of each phase one step prior to the main contact closing. Between the resistor switch closings certain staggering takes place. For example, if 3 phases are involved the resistor closings are staggered by about 60 or more electrical degrees. Further, there is circuitry to insure that the polarity of the bus side phase-to-ground voltage is of the same polarity as the trapped charges on the corresponding phases on the line side of the breaker when the resistor switch contacts are engaged. When the voltage across the main contacts is zero after the resistor is inserted, circuitry provides that the main contacts be directly engaged and the resistors be shortened out.

REFERENCES:
patent: 3249810 (1966-05-01), Strom et al.
patent: 3566152 (1971-02-01), Casey et al.
patent: 3891813 (1975-06-01), Yoon et al.

Affiliated with

Also associated with

Rating

Method and apparatus for a power circuit breaker controller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for a power circuit breaker controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for a power circuit breaker controller will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-256994