System for opening/closing circuit breakers

Details System for opening/closing circuit breakers System for opening/closing circuit breakers

1993-03-18

1995-07-04

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

361187, H01H 900

Patent

active

054305993

ABSTRACT:
The system for timing the opening and closing of a high power switching arrangement breaker used in an electrical transmission system measures the temperature of the breaker and the phase of the power signal being switched. A control circuit provides a control signal for opening and closing the breaker in response to an initiating signal, the control signal being timed as a function of the temperature and the phase angle to make sure that contact is either made or broken at an appropriate time to reduce arcing. By taking into consideration temperature and its effects on the response of the breaker, arcing is significantly reduced.

REFERENCES:
patent: 4249088 (1981-02-01), Kleba et al.
patent: 4878144 (1989-10-01), Nebon
patent: 4897755 (1990-06-01), Polster et al.
patent: 5119260 (1992-06-01), Huhse et al.
Patent Abstracts of Japan, vol. 14, No. 394 (E-0969), Aug. 24, 1990, JP-A-02 148 638, Jun. 7, 1990.
Patent Abstracts of Japan, vol. 16, No. 27 (E-1158), Jan. 23, 1992, JP-A-03 241 625, Oct. 28, 1991.

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