Nozzle for a puffer-type circuit breaker

Details Nozzle for a puffer-type circuit breaker Nozzle for a puffer-type circuit breaker

1980-05-27

1982-07-13

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148A, H01H 3370

Patent

active

043396410

ABSTRACT:
A puffer-type circuit breaker is provided with a nozzle of insulating material having a section downstream of the nozzle throat designed to optimize arc cooling by a high speed flow of insulating gas passing over the arc. The nozzle design prevents excessive ablation of nozzle material by the arc and reduces blocking of the nozzle by the moving electrode during circuit interruption. The nozzle includes a generally conically-shaped upstream section, a throat section and a generally bell-shaped downstream section.

REFERENCES:
patent: 3670124 (1972-06-01), Teijiero
patent: 3739125 (1973-06-01), Noeske
patent: 4161636 (1979-07-01), Maier

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