(19)
(11) EP 1 406 278 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.05.2006 Bulletin 2006/18

(43) Date of publication A2:
07.04.2004 Bulletin 2004/15

(21) Application number: 03018257.0

(22) Date of filing: 11.08.2003
(51) International Patent Classification (IPC): 
H01H 33/34(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 04.10.2002 JP 2002292216

(71) Applicant: Hitachi, Ltd.
Chiyoda-ku, Tokyo 100-8010 (JP)

(72) Inventors:
  • Kawamoto, Hideo
    Chiyoda-ku, Tokyo 100-8220 (JP)
  • Yaginuma, Noriyuki
    Chiyoda-ku, Tokyo 100-8220 (JP)
  • Okubo, Kenichi
    Chiyoda-ku, Tokyo 100-8220 (JP)
  • Ishiguro, Tetsu
    Chiyoda-ku, Tokyo 100-8220 (JP)
  • Yaegashi, Masahiro
    Chiyoda-ku, Tokyo 100-8220 (JP)

(74) Representative: Strehl Schübel-Hopf & Partner 
Maximilianstrasse 54
80538 München
80538 München (DE)

   


(54) Gas insulated switchgear


(57) The output shaft (111) of a hydraulic drive unit (110) and the drive shaft of a movable contactor (103) of gas insulated switchgear are linearly arranged, and the longitudinal shaft of an accumulator (114) using gas as an accumulation source is arranged parallel to the output shaft (111) of this hydraulic drive unit (110); further, a high pressure block equipped with a conduit (115) for supplying high pressure hydraulic oil to the hydraulic drive unit (110) from this accumulator (114) is arranged perpendicularly to the aforementioned two drive shafts, thereby supporting and fixing the hydraulic drive unit in position.







Search report