Arrester assembly with sealed back-up air gap

Details Arrester assembly with sealed back-up air gap Arrester assembly with sealed back-up air gap

1991-09-12

1993-07-13

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361129, 337 29, H02H 322

Patent

active

052279472

ABSTRACT:
An assembly for defining a sealed back-up air gap, for use with a line protector comprising an over-voltage arrester housed within a canister and defining a back-up air gap therebetween, comprises an electrical contact and a sealing member. A mounting arrangement is disposed on the electrical contact for positively positioning and retaining the sealing member on the electrical contact. The sealing member is engagable with the canister to form a seal for the back-up air gap, and with the contact while also mounting the contact for electrically conductive engagement with one electrode of the arrester. In one embodiment, the sealing member is an elastomeric O-ring. In another embodiment, the O-ring mount is formed by deformation of the electrical contact. In yet another embodiment, the O-ring is replaced by a flat, annular washer-shaped insulator, which is positively retained on the electrical contact.

REFERENCES:
patent: 4241374 (1980-12-01), Gilberts
patent: 4866562 (1989-09-01), Jones

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