Ultra-high-tension circuit-breaker

Details Ultra-high-tension circuit-breaker Ultra-high-tension circuit-breaker

1992-09-30

1994-04-19

Scott, J. R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200145, H01H 3316

Patent

active

053047605

ABSTRACT:
The present invention relates to an ultra-high-tension interrupting chamber comprising a main chamber including an insulating case containing permanent contacts, arcing contacts and two closing resistors inserted by means of semi-moving "make switch" device putting a "first" one of the resistors into operation before the "second" resistor. An auxiliary chamber is connected in parallel with the main chamber, which auxiliary chamber includes an insulating casing containing an opening varistor associated with a break switch having a slow-release opening mechanism situated inside the casing.

REFERENCES:
patent: 4421962 (1983-12-01), Thuries et al.
patent: 4439651 (1984-03-01), Thuries et al.
patent: 5124872 (1992-06-01), Pham et al.
patent: 5164559 (1992-11-01), Pham et al.
patent: 5170023 (1992-12-01), Pham et al.

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