(19)
(11) EP 1 005 058 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.07.2001 Bulletin 2001/28

(43) Date of publication A2:
31.05.2000 Bulletin 2000/22

(21) Application number: 99123233.1

(22) Date of filing: 26.11.1999
(51) International Patent Classification (IPC)7: H01H 33/66
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 27.11.1998 JP 33710798

(71) Applicant: KABUSHIKI KAISHA TOSHIBA
Kawasaki-shi, Kanagawa 212-8572 (JP)

(72) Inventors:
  • Shioiri, Tetsu, Toshiba Kabushiki Kaisah
    Minato-ku Tokyo 105-8001 (JP)
  • Yamazaki, Toshiharu, Toshiba Kabushiki Kaisah
    Minato-ku Tokyo 105-8001 (JP)
  • Murakami, Shin, Toshiba Kabushiki Kaisah
    Minato-ku Tokyo 105-8001 (JP)
  • Yokokura, Kunio, Toshiba Kabushiki Kaisah
    Minato-ku Tokyo 105-8001 (JP)
  • Sato, Junichi, Toshiba Kabushiki Kaisah
    Minato-ku Tokyo 105-8001 (JP)

(74) Representative: HOFFMANN - EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Vacuum switchgear


(57) The vacuum switchgear comprises a vacuum interrupter from which the seal is put on to both ends of insulation container where the insulation medium is enclosed airtight with the first and second metallic material, in which the vacuum interrupter has fixed electrode which penetrates through the first metallic material and clings the first metallic material, and movable electrode which penetrates the through the second metallic material, is fixed the second metallic material through bellows, and is provided to oppose to the fixed electrode; and operation mechanism which moves the movable electrode along a straight line at three positions of a close position, an open position, and an isolation position.






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