Puffer-type compressed-gas circuit-interrupter

Details Puffer-type compressed-gas circuit-interrupter Puffer-type compressed-gas circuit-interrupter

1975-08-07

1977-08-23

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200150G, H01H 3388

Patent

active

040442110

ABSTRACT:
An improved puffer-type gas-blast circuit-interrupter is provided having a movable operating cylinder assembly movable over a relatively-fixed piston structure. A high-compression ratio is obtained during the opening operation by minimizing the "dead" volume of arc-quenching gas within the movable operating cylinder, and an efficient gas-flow path through the movable cylinder assembly smoothly converges through the movable nozzle throat area into the drawn arc.
The improved puffer-type interrupter of the present invention, additionally, is provided with a shorter insulating nozzle than in conventional "puffers" to provide a more efficient gas path; and finally, a continuous annular stationary piston configuration requires no orientation procedures for assembly operations.

REFERENCES:
patent: 3786215 (1974-01-01), Mauthe
patent: 3906180 (1975-09-01), Glarner
patent: 3909572 (1975-09-01), Tsubaki et al.
patent: 3941962 (1976-03-01), Thaler
patent: 3955057 (1976-05-01), Dabringhausen et al.

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