公开(公告)号：JPH07220586A

公开(公告)日：1995-08-18

申请号：JP32573994

申请日：1994-12-27

Applicant: ABB RESEARCH LTD

Inventor： INGO HERUPUSUTO ,  RARUFUUDEIITAA PIICHIYU

IPC: H01H33/64 ,  H01B9/06 ,  H01H33/53 ,  H02B13/045 ,  H02G5/06

Abstract: PURPOSE: To reliably remove free thermoelectrons from an insulated route by coating the inner surface of a metal capsule incorporating an insulating gas and the outside of a shielding part surrounding the contact part on a protective coating part doped with a fullerene. CONSTITUTION: A high voltage facility comprises a metal capsule 1 of which the inner chamber 2 is filled with an insulting gas (SF6 and as such) and in which an active part to apply voltage to is installed in the center part. In the metal capsule 1, a shielding part 3 concentrically surrounding an immovable contact part and a shielding part 4 concentrically surrounding a movable contact part are arranged and the respective shielding parts 3, 4 are made of metal thin sheets 6, 8, respectively. Protective coating parts 7, 9, 10 are formed at least partially on the outsides of the metal thin sheets 6, 8 or the inner surface of the metal capsule 1 and an epoxy lacquer doped with a C60 fullerene is used for the protective coating parts 7, 9, 10. Consequently, partial discharge caused by free particles can be suppressed to low.