Axial blast puffer interrupter with multiple puffer chambers

Details Axial blast puffer interrupter with multiple puffer chambers Axial blast puffer interrupter with multiple puffer chambers

1975-02-24

1976-10-19

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200150G, H01H 3388

Patent

active

039872610

ABSTRACT:
A puffer interrupter has two axially spaced movable pistons fixed to the movable contact. A fixed barrier is disposed between the two pistons and a further fixed barrier is positioned at the end of the cylinder chamber. The two fixed barriers form three variable volume chambers with the two movable pistons. As the interrupter is opened, the central chamber formed between the end movable piston and fixed barrier between the two pistons reduces in volume to generate an increasing pressure while the two volumes on either side of the central volume increase in volume to produce a decrease in pressure. Gas then flows axially through the separating contact from the decreased volume central chamber to the outer reduced-presssure chambers. An auxiliary piston is formed within the central chamber and can increase the central chamber volume when the pressure within the central chamber exceeds a given value due to blockage of the nozzle by high arc-generated pressures.

REFERENCES:
patent: 3786215 (1974-01-01), Mauthe

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