Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1989-11-02
1991-03-19
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200148R, 200148A, H01H 3360
Patent
active
050013149
ABSTRACT:
A high tension circuit breaker having a dielectric gas under pressure, the circuit breaker being of the type including at least one interrupting chamber comprising an insulating shell filled with the gas and containing a fixed assembly including a fixed main contact and a fixed arcing contact, a moving assembly including a moving main contact and a moving arcing contact, a blast cylinder opening out into a blast nozzle, and a pair of secondary contacts, the circuit breaker being characterized in that the blast cylinder is delimited by a first cylinder (5) constituting the moving arcing contact, a second cylinder (7) constituting the main moving contact, and a semi-moving first piston (14) carrying one of the secondary contacts, with the other secondary contact (31) being carried by a fixed tube (15) which, together with the first piston, an insulating tubular extension (5B) of the first cylinder (5), and a second piston fixed to the cylinder (5) and sliding along the fixed tube, delimits a second closed volume (35).
REFERENCES:
patent: 4516006 (1985-05-01), Kobayashi et al.
patent: 4649243 (1987-03-01), Thuries
patent: 4774388 (1988-09-01), Thuries et al.
Dufournet Denis
Perret Michel
Thuries Edmond
GEC Alsthom SA
Macon Robert S.
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