High voltage electrical switch

Details High voltage electrical switch High voltage electrical switch

H - Electricity

01

H

306/227

H01H 33/04 (2006.01) H01H 9/30 (2006.01)

Patent

CA 1107329

ABSTRACT OF THE DISCLOSURE A switch adapted to interrupt high voltage electrical currents by directing an extended curvilinear arc plasma path within a fluid insulating medium. The preferred embodiment of the switch is designed to store rotational energy in a motor spring, release the stored rotational energy, and latch an opposite motor spring all in the same movement of the operator's handle. The switch also includes a mechanical overdrive unit that permits the operator's handle to be rotated only a fraction of the total rotation travelled by the movable contact. In addition, an anti-stick or weld break feature is provided that manually initiates rotation of the movable contact in the event of adhesion between the contacts. Finally, a novel contact design is disclosed which aids in controlling the path of the arc plasma as well as providing multiple contact paths to insure that proper physical connection is made between the contacts.

286815

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