Title:
SWITCHGEAR
Document Type and Number:
WIPO Patent Application WO/2019/111378
Kind Code:
A1
Abstract:
The purpose of the present invention is to achieve a highly reliable switchgear that ensures airtightness in an emission pathway for high-temperature, high-pressure gas generated in an arc accident or an internal short circuit accident. The present invention is provided with: a first exhaust duct joining part 15a2 that is formed by bending an end of a common duct 15, which penetrates switchgears 100A, 100B, which are arranged in an arrangement direction in which the switchgears 100A, 100B are arranged within an electrical chamber, inward at a joining portion between the common duct 15 and an exhaust duct 16 connecting common duct 15 to the outside of the electrical chamber; and a common duct joining part 16a6 that is formed by folding an end of the exhaust duct 16 outward, wherein the first exhaust duct joining part 15a2 and the common duct joining part 16a6 are fastened and fixed together using two or more sets of bolts 46 and weld nuts 47a while the outer surface of the first exhaust duct joining part 15a2 and the inner surface of the common duct joining part 16a6 are kept in abutment against each other.
Inventors:
PAUDEL SAROJ (JP)
KAWANISHI KATSUNORI (JP)
INOUE NAOAKI (JP)
KAWANISHI KATSUNORI (JP)
INOUE NAOAKI (JP)
Application Number:
PCT/JP2017/044022
Publication Date:
June 13, 2019
Filing Date:
December 07, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02B1/28; H01H33/575
Foreign References:
| JP2008064354A | 2008-03-21 | |||
| JPS62132609U | 1987-08-21 | |||
| JPS6250448U | 1987-03-28 | |||
| JP3155105U | 2009-11-05 | |||
| JPS62145407U | 1987-09-14 | |||
| JP2006050796A | 2006-02-16 |
Attorney, Agent or Firm:
OIWA Masuo et al. (JP)
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