Electrical device containing insulating gas under pressure...

Details Electrical device containing insulating gas under pressure... Electrical device containing insulating gas under pressure...

2011-08-02

2011-08-02

Luebke, Renee (Department: 2833)

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Housing structure

C218S078000, C218S154000

Reexamination Certificate

active

07989726

ABSTRACT:
The gas-tight, high or medium voltage electric switch device (1), containing an insulating gas under pressure, comprises switch contacts (2) capable of occupying an open position and a closed position and disposed inside a composite insulator formed by a rigid tube (3) surrounded by an elastomer casing (4) whose outside surface defines a succession of annular fins. The rigid tube and the elastomer casing are arranged so as to define an observation window (7) that is at least translucent, and through which the open or closed position of the switch contacts is visible.

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