Gas insulated switchgear insertion resistor and main contacts op

Details Gas insulated switchgear insertion resistor and main contacts op Gas insulated switchgear insertion resistor and main contacts op

1995-05-10

1997-02-18

Scott, J. R.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Resistance inserting

218 84, 218154, 218 78, H01H 942, H01H 3316

Patent

active

056043406

ABSTRACT:
A gas circuit breaker having a resistance circuit breaking portion connected in parallel with a main circuit breaking portion includes a main circuit breaking portion actuating mechanism and a resistance circuit breaking portion actuating mechanism. The resistance circuit breaking portion actuating mechanism is provided with a first delaying mechanism mechanically coupled to the main circuit breaking portion actuating mechanism, and a second delaying mechanism, independent from the first delaying mechanism, which is operated by an electrical command signal relating to either a making or an interrupting electrical signal to the main circuit breaking portion actuating mechanism. The otherwise possible thermal break-down of a resistor connected in series with the resistance circuit breaking portion is prevented.

REFERENCES:
patent: 3659065 (1972-04-01), Roidt et al.
patent: 4513187 (1985-04-01), Schaad et al.
patent: 4538039 (1985-08-01), Gotoh et al.
patent: 4636599 (1987-01-01), Bischofberger et al.
patent: 5170023 (1992-12-01), Pham et al.
patent: 5206470 (1993-04-01), Hokutou et al.
patent: 5243160 (1993-09-01), Ohno et al.
patent: 5424504 (1995-06-01), Tanaka et al.
patent: 5451731 (1995-09-01), Yoshizumi et al.

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