Gas pressure circuit breaker

Details Gas pressure circuit breaker Gas pressure circuit breaker

1986-10-29

1987-07-07

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148R, H01H 3388

Patent

active

046788786

ABSTRACT:
In a gas pressure circuit breaker with two fixed contacts an insulation tube is in the path of the quenching gas flow during circuit breaking. The insulation tube is grooved internally and externally. Openings for the quenching gas flow are formed by intersection of the sufficiently deep inner and outer grooves at crossings. There results a ribbed body of low material intensity, which nevertheless is resistant to bending and torsion. Under mechanical (static and dynamic) and thermal stress the insulation tube exhibits a long life. The arc applying stress on the inner surface weakens the rib structure of the insulation tube comparatively little. The surface toward the arc has no web connections in the axial direction. Due to the resulting layering of insulating material and insulating or quenching gas, the resistance of the circuitbreaker to surface leakage current is increased.

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