Earthing switch

Details Earthing switch Earthing switch

2006-02-07

2006-02-07

Donovan, Lincoln (Department: 2832)

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

C218S043000

Reexamination Certificate

active

06995330

ABSTRACT:
A high for medium voltage gas insulated earthing switch comprises at least one conducting bar in an enclosure, with a corresponding earthing contact and a phase contact fixed to the said bar that will be electrically connected to the earthing contact to earth the said bar. The earthing contact is installed fixed in the enclosure facing the phase contact, leaving a free space (E) between this phase contact and the earthing contact. A switching element is installed free to move in the enclosure between the phase contact and the earthing contact, and comprises firstly a switching contact that short circuits the space left free (E) to electrically connect the earthing contact and the phase contact when the earthing switch is closed, and secondly an at least partly electrically insulating support on which the switching contact is fixed such that the switching contact is electrically isolated from the phase contact and from the earthing contact when the earthing switch is in an open position.

REFERENCES:
patent: 4429199 (1984-01-01), Pircher et al.
patent: 6559403 (2003-05-01), Gutalj
patent: 196 12 273 (1997-02-01), None
patent: 2 193 843 (1988-02-01), None
patent: WO 96/17420 (1996-06-01), None

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