Method for operating a circuit-breaker

Details Method for operating a circuit-breaker Method for operating a circuit-breaker

1990-02-22

1992-06-02

Scott, J. R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

361 5, 361 78, 361 88, 361 93, 364483, H02H 300, H02H 700, G01R 1900

Patent

active

051192608

ABSTRACT:
A method for operating a circuit-breaker by means of which one is able by using a vacuum circuit-breaker, to interrupt inductive circuits without causing disturbing overvoltages. The switching operation of the vacuum circuit-breaker is influenced by a tripping control device, which is supplied with a measured value of the tripping delay of the vacuum circuit-breaker from the instant the tripping signal is output to the instant the contact members are separated as a correcting quantity, in the case of an opening operation that occurred previously. The temperature of the actuator unit of the vacuum circuit-breaker, the standstill time of the circuit-breaker, as well as the operating voltage and temperature of a tripping solenoid can be used as further correcting quantities. The described method is suited for application vacuum circuit-breakers in circuits with inductive components.

REFERENCES:
patent: 3530303 (1970-09-01), Bachofen
patent: 3555354 (1971-01-01), Kotos
patent: 3707634 (1972-12-01), Arlen et al.
patent: 3946277 (1976-03-01), Lange et al.
patent: 4152562 (1979-05-01), Kohler et al.
patent: 4922363 (1990-05-01), Long et al.
patent: 4937698 (1990-06-01), Toya et al.
Afanasjew, W. W.; Greiner, L. K.: Neue Entwicklungsrichtungen im Hochspannungsgeraetebau, Elektrie 24, (1970), H.12, pp. U239-U240.

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