Contact assembly for high-voltage switch

Details Contact assembly for high-voltage switch Contact assembly for high-voltage switch

H - Electricity

01

H

306/331

H01H 1/50 (2006.01) H01H 31/00 (2006.01)

Patent

CA 1330819

ABSTRACT A contact assembly is provided for a high-voltage switch. The contact assembly includes one or more contact members that cooperate with a contact element. The arrangement of the contact members is such that an interference fit results with the contact element and one or more of the contact members are displaced. To provide operation of the contact assembly in ice-forming environments, facilities are provided to prevent the ingress of moisture and the formation of ice in the space required for displacement of the appropriate one or more contact members. Of course, if ice were allowed to occupy the space required for displacement of the one or more contact members, due to the relatively incompressible nature of ice, appropriate contact engagement would be inhibited since displacement of the one or more contact members would be unable to occur when engaged by the contact element. In a specific arrangement, the contact assembly includes a contact support structure which carries the contact members. A filler element is provided between the contact support structure and the contact members that are required to be displaceable. The filler element is deformable and/or compressible in response to the displacement of the contact member. Additionally, the filler element is impervious to the ingress of moisture or the formation of ice crystals and retains its flexibility under ice-forming conditions.

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