Title:
TANK TYPE CIRCUIT-BREAKER
Document Type and Number:
WIPO Patent Application WO/2023/053191
Kind Code:
A1
Abstract:
A tank type circuit-breaker (100) comprises: a cylindrical grounding tank (1) in which an insulation gas is sealed; a vacuum valve (4) having a movable-side contact (5a) and a fixed-side contact (5b) and insulated and supported in the grounding tank; a movable conductor (20a) electrically connected to the movable-side contact; a fixed conductor (20b) electrically connected to the fixed-side contact; a movable-side external conductor (21a) and a fixed-side external conductor (21b) arranged in a pair of bushings extending above the grounding tank; a movable-side frame (13) for electrically connecting the lower end of the movable-side external conductor to the movable conductor; and a fixed-side frame (14) for electrically connecting the lower end of the fixed-side external conductor to the fixed conductor. The fixed-side frame and the fixed-side external conductor are connected via at least two springs (18A, 18B) arranged in series along the extending direction of the fixed-side external conductor, and thus the fixed-side frame is suspended and supported on the fixed-side external conductor.
Inventors:
SATO MOTOHIRO (JP)
NAKAMURA YASUNORI (JP)
NAKAMURA YASUNORI (JP)
Application Number:
PCT/JP2021/035612
Publication Date:
April 06, 2023
Filing Date:
September 28, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02B13/035
Domestic Patent References:
| WO2011052288A1 | 2011-05-05 | |||
| WO2011052010A1 | 2011-05-05 |
Foreign References:
| JP2010178526A | 2010-08-12 | |||
| JPH11176304A | 1999-07-02 | |||
| JP2007306701A | 2007-11-22 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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