Grounded gas blast circuit breaker/isolating switch with visual

Details Grounded gas blast circuit breaker/isolating switch with visual Grounded gas blast circuit breaker/isolating switch with visual

1990-08-07

1991-12-10

Scott, J. R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148B, H01H 3382

Patent

active

050720830

ABSTRACT:
A circuit breaker/isolating switch device intended, in particular, to be associated with a generator in a power station for protection purposes. The device is disposed inside a metal sheath and comprises a gastight insulating casing filled with a gas having good dielectric properties and at a pressure of a few bars, the casing containing a fixed assembly comprising a fixed permanent contact and a fixed arcing contact, a moving assembly comprising a moving permanent contact and a moving arcing contact, a blast cylinder, a blast piston, and a blast nozzle. The moving assembly is connected to a drive rod passing in gastight manner through the casing and connected outside the casing to a drive mechanism. The casing carries a metal collar disposed level with the contact separation zone and connected to ground and the collar includes a radial channel provided with an optical device enabling the position of the contacts to be inspected.

REFERENCES:
patent: 1463320 (1923-07-01), Jacobs
patent: 2936355 (1960-05-01), Cashwell
patent: 3290469 (1966-12-01), Leeds

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