Title:
【発明の名称】ガス絶縁電気機器
Document Type and Number:
Japanese Patent JP2997027
Kind Code:
B2
Abstract:
In a gas insulated electric apparatus having a plurality of gas sections (3a - 3d) filled with insulating gas, locating device (17) orientates position of a gas section, in which insulation abnormalities are produced, on the basis of a detection signal from sensors (13a, 13b) disposed in each of predetermined gas sections and at the same time hindering degree diagnosing device (18) diagnoses the degree and the kind of the insulation abnormalities, while comparing a detection signal from the sensors with data stored in a data base (19). A valve control (20) generates a valve control signal, responding to the locating device and the hindering degree diagnosing device and trip circuit (2) generates a valve opening signal for opening an electromagnetic valve (9) disposed in a gas section, in which insulation abnormalities are produced, responding to this valve control signal. Insulating gas injecting and evacuating device injects an insulating gas different from the insulating gas, with which the gas sections are filled beforehand, in the gas section, for which the electromagnetic valve opened by the valve opening signal is disposed, or evacuates a predetermined amount of the insulating gas, with which the gas sections are filled beforehand, so as to increase insulation strength.
Inventors:
Keisho Endo
Tomoaki Utsumi
Toshio Ishikawa
Shuzo Iwaasa
Tokio Yamagiwa
Tomoaki Utsumi
Toshio Ishikawa
Shuzo Iwaasa
Tokio Yamagiwa
Application Number:
JP24373390A
Publication Date:
January 11, 2000
Filing Date:
September 17, 1990
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G01N27/00; H02B13/025; H02B13/065; H02H5/08; (IPC1-7): H02H5/08; G01N27/00; H02B13/055
Domestic Patent References:
| JP1166517A | ||||
| JP2142308A |
Attorney, Agent or Firm:
Kenjiro Take