Title:
GAS-INSULATED SWITCHING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/044424
Kind Code:
A1
Abstract:
The present invention provides a gas-insulated switching device that has an arc-driving-type disconnector that prevents the ignition of an arc at a location where the arc driving force in a spiral electrode is weak and uses the spiral electrode with improved current breaking performance. This gas-insulated switching device is characterized by having the disconnector that has a sealed container in which an insulative gas is sealed, and a pair of arc contacts which are arranged facing each other inside the sealed container, wherein at least one of the pair of arc contacts serves as the spiral electrode that has a spiral groove formed in a direction rotating about a shaft of the arc contact, and the height of the root of a spiral section in the facing surface direction is reduced compared to the height of the tip of the spiral section in the facing surface direction.
More Like This:
| JPS6139845 | [Title of the device] Switch |
Inventors:
NUKAGA JUN (JP)
NISHIMURA TAKAHIRO (JP)
IWATA TAKESHI (JP)
NISHIMURA TAKAHIRO (JP)
IWATA TAKESHI (JP)
Application Number:
PCT/JP2021/015967
Publication Date:
March 03, 2022
Filing Date:
April 20, 2021
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H01H33/18; H02B13/035
Foreign References:
| JP2008176942A | 2008-07-31 | |||
| JP2020048252A | 2020-03-26 | |||
| JP2001052576A | 2001-02-23 | |||
| JP2001135206A | 2001-05-18 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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