High voltage circuit breaker

Details High voltage circuit breaker High voltage circuit breaker

Filed on

1988-04-06

Date issued

1989-03-21

Examiner

Macon, Robert S.

Patent Class

Electricity: circuit makers and breakers

SubClass

Liquid contact

SubSubClass

Time delay

Other Related Categories

200148J, H01H 3342

Type

Patent

Status

active

Patent number

048145602

Description

ABSTRACT:
In connection with synchronous closing or opening of three-pole circuit breakers, the desired time shift between the instants of contact make or contact break in the different phases can be achieved mechanically by a suitable choise of arms and links in the mechanical system interconnecting the contacts and the operating device. The necessary time difference between the instants of switching, with retained positions of open and closed contacts, can be achieved in mechanism with a toggle joint (4, 51) which is extended to a greater or smaller extent in the three poles.

REFERENCES:
patent: 2667554 (1954-01-01), Shores
patent: 3624329 (1971-11-01), Fischer et al.
patent: 3655931 (1972-04-01), Circle
patent: 4195211 (1980-03-01), Aslan et al.
R. W. Alexander, "Synchronous Closing Control for Shunt Capacitors" in IEEE Transactions on Power Apparatus and Systems, vol. PAS-104, No. 9, Sep. 1985.
ASEA Journal, vol. 56, No. 3 (1983) pp. 16-21.

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