Invention Grant
- Patent Title: Switchgear and method of fabricating the same
- Patent Title (中): 开关柜及其制造方法
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Application No.: US12294382Application Date: 2007-03-23
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Publication No.: US07880111B2Publication Date: 2011-02-01
- Inventor: Naoaki Inoue , Masahiro Arioka
- Applicant: Naoaki Inoue , Masahiro Arioka
- Applicant Address: JP Chiyoda-Ku, Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Chiyoda-Ku, Tokyo
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2006-084479 20060327
- International Application: PCT/JP2007/056062 WO 20070323
- International Announcement: WO2007/116661 WO 20071018
- Main IPC: H01H33/66
- IPC: H01H33/66

Abstract:
A switchgear including a vacuum valve which prevents partial discharges infallibly and whose reliability is high, and a method of fabricating the same are obtained.In a vacuum valve 1 wherein a stationary electrode 1a and a movable electrode 1b are disposed within a vacuum vessel 2 which is constituted by a metal flange 2a as well as a metal tube 2e and an insulating tube 2b, and wherein a resin mold 3 is applied onto the outer peripheral surface of the vacuum vessel 2; coiled metal-made shields 4a and 4b, in each of which a coiled metal wire is brought into an annular shape, are retained on the outer peripheral surface of the vacuum vessel 2 so as to relax the electric fields of the electric field relaxation-requiring parts 21d of the vacuum vessel 2.
Public/Granted literature
- US20090134125A1 SWITCHGEAR AND METHOD OF FABRICATING THE SAME Public/Granted day:2009-05-28
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