Surge arrester with improved insulative bracket

Details Surge arrester with improved insulative bracket Surge arrester with improved insulative bracket

H - Electricity

02

H

317/13

H02H 1/00 (2006.01) H01T 1/00 (2006.01)

Patent

CA 1334989

The insulative support bracket of a surge arrester includes a concentric annular concavity formed at one or both ends of a bolt hole. A washer, when pressed concentrically to the concavity, contacts the insulative bracket only, at least initially, at sur- faces adjacent the outer diameter of the washer. An annular convexity, surrounding the concavity, will mate with the central portion of an external tooth lockwasher to prevent the full penetration of the teeth of the lockwasher into the insulative bracket. The ability of the insulative bracket to withstand the mechanical forces transmitted to the insulative bracket by the washers is thereby enhanced. The con- cavity may be formed either in a surface of the insu- lative bracket or in a surface of the washer.

613052

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