Fault gas seal for a polymer surge arrester
AssigneeAmerace Corporation
InventorsHarry G. Yaworski, Larry N. Siebins
Life of this patent
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Abstract
Fault gas seals to prevent the ejection of a surge arrester from a loadbreak bushing due to the generation of such gas in response to the failure of arrester devices in such surge arrester. A metal O-ring support is bonded to the conductive insert of the arrester housing or added as a retrofit to such housing. Annular grooves in the loadbreak probe are fitted with O-rings which are compressed against the support to provide a gas-tight passage along the probe surface. An additional annular groove can be used to receive a fastener to hold the retrofit in position.
Claims10
In an elbow-shaped surge arrestor having a dielectric housing, a first leg having a first passage within which are located one or more arrestor devices coupled to a first connector and a second leg having a receptacle to receive the end of a loadbreak bushing insert and a second passage to receive a loadbreak probe connected to said first connector, the improvement comprising at least one annular groove about said loadbreak probe adjacent its end connected to said first connector and seal means in said second passage, one for each of said annular grooves and positioned in its associated groove, said seal means to prevent the entry of gases generated by the failure of one or more of said arrestor devices in said first passage into said receptacle to force said elbow-shaped surge arrestor to separate from a loadbreak bushing insert upon which said elbow-shaped surge arrestor is installed.
Dependencies are inferred from the claim text.