Circuit-breaker with grounded metal enclosure

Details Circuit-breaker with grounded metal enclosure Circuit-breaker with grounded metal enclosure

1997-01-31

1998-04-07

Spyrou, Cassandra C.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

218155, H01H 3370

Patent

active

057367043

ABSTRACT:
A grounded metal enclosure circuit-breaker comprises, for each pole, a metal enclosure having two insulative bushings. The enclosure and the bushings are adapted to be filled with insulative gas. The enclosure contains first and second metal supports and a set of fixed contacts and a set of mobile contacts respectively supported by the first and second metal supports. The bushings each comprise a metal conductor surrounded by an insulative covering, each of the first and second metal supports having fixed to it a metal part having an annular portion surmounted by a deformable conical portion. The metal part has an axial bore in which the bushing conductor is inserted. A ring having a conical interior surface complementary to that of the conical portion is screwed onto the annular portion.

REFERENCES:
patent: 3118966 (1964-01-01), Yeckley et al.
patent: 3214551 (1965-10-01), Taylor
patent: 3786216 (1974-01-01), Beier et al.
patent: 3796504 (1974-03-01), Marechal
patent: 4045634 (1977-08-01), Nakano et al.
patent: 4236053 (1980-11-01), Sasaki et al.
patent: 4516006 (1985-05-01), Kobayashi et al.
patent: 5495084 (1996-02-01), Meyer et al.

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