Compression piston switch

Details Compression piston switch Compression piston switch

1982-06-09

1984-02-14

Goldberg, E. A.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148A, 200150G, H01H 3388

Patent

active

044318782

ABSTRACT:
A compression piston switch is provided with two switching parts which are mutually axially displaceable. The switch also has a device which is connected to a first one of the two switching parts for guiding a quenching gas flow. The quenching gas, which is used for quenching a switching arc, flows through first and second constrictions in the device from a compression into an expansion space. The first constriction of the device is provided by an annular part of a conductive material.
In this switch, the dielectric strengthening of the quenching zone is increased by preventing, to a large extent, the pushing together of the electric field between the device and the first switching part. Such a switch is particularly distinguished by reliable switching of high voltages in the case of a short circuit.

REFERENCES:
patent: 2883494 (1959-04-01), Latour
patent: 4161636 (1979-07-01), Maier
patent: 4209679 (1980-06-01), Koppl et al.

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