Earthing switch for metal-clad high-voltage switch gear insulate

Details Earthing switch for metal-clad high-voltage switch gear insulate Earthing switch for metal-clad high-voltage switch gear insulate

1996-09-30

1997-07-22

Gellner, Michael L.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

218 55, H01H 3304

Patent

active

056506031

ABSTRACT:
An earthing switch may be used for a metal-clad, high-voltage switchgear insulated with compressed gas. The mobile earthing contact is arranged so as to be insulated from the earthed cladding for measuring purposes. The insulation arrangement of the earthing contact is bypassed by an electrical connection, preferably outside of the cladding to earth the switching device. The electrical connection is disconnected when the earthing contact is connected in the closed position to a measuring device. An additional contact arrangement is provided that electrically bypasses the insulation arrangement and connects the mobile earthing contact to the earthed cladding when the switch is between the closed and open positions. This prevents surges resulting from pre-arcing on the insulation arrangement and possible damage to measuring instruments that may be connected to the earthing switches.

REFERENCES:
patent: 4027126 (1977-05-01), Grunert
patent: 4413166 (1983-11-01), Meyer
patent: 4486634 (1984-12-01), Nakano et al.
patent: 5382765 (1995-01-01), Lorenz et al.

Affiliated with

Also associated with

Rating

Earthing switch for metal-clad high-voltage switch gear insulate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Earthing switch for metal-clad high-voltage switch gear insulate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earthing switch for metal-clad high-voltage switch gear insulate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1561216