High tension circuit breaker having a dielectric blast gas

Details High tension circuit breaker having a dielectric blast gas High tension circuit breaker having a dielectric blast gas

1990-05-31

1991-01-08

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148R, H01H 3388

Patent

active

049837915

ABSTRACT:
A high tension circuit breaker insulated by an arc blasting dielectric gas and comprising, inside a gastight insulating housing: a fixed assembly comprising, in particular, a fixed main contact and a fixed arcing contact; a moving assembly driven by a drive rod and including, in particular, a moving main contact and a moving arcing contact; a blast volume extended by a blast nozzle; a blast piston; and a pair of secondary contacts disposed inside a first volume and intended to generate a secondary arc; wherein the circuit breaker further comprises first means for reducing the risks of unwanted arcs being struck due to the secondary arc, the first means being constituted by a jacket of insulating material extending level with the secondary contacts and in sliding contact with at least a portion of one of the sliding contacts, the jacket having longitudinal grooves adjacent to said secondary contact. The invention is applicable to high tension circuit breakers.

REFERENCES:
patent: 4945197 (1990-07-01), Thuries et al.

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