Rotary switch with curved arc root migration track

Details Rotary switch with curved arc root migration track Rotary switch with curved arc root migration track

1988-06-14

1989-02-07

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147R, 200148H, 200148B, H01H 3318, H01H 3360

Patent

active

048033197

ABSTRACT:
A rotary switch with a sealed enclosure in which a rotating knife-blade is housed cooperating with two stationary contacts supported by the internal periphery of the enclosure. A permanent magnet is incorporated in the stationary contacts to magnetically blow the arc roots on a curved migration track towards hidden locations which are not facing the knife-blade.
The invention is applicable to a gas-insulated medium voltage switch.

REFERENCES:
patent: 2611059 (1952-09-01), Immel et al.
patent: 3064104 (1962-11-01), Wells et al.
patent: 3194918 (1965-07-01), Muscante et al.
patent: 3646284 (1972-02-01), Bokshorn et al.
patent: 4357508 (1982-11-01), Werner
patent: 4700028 (1987-10-01), Heyde

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