发明名称 SEALED GAS-INSULATED SWITCHGEAR
摘要 <p><P>PROBLEM TO BE SOLVED: To easily detect gas leakage from a sealed vessel by using a gas detector in a sealed gas-insulated switchgear in which dry air as insulation gas is pressure-filled into the sealed vessel that accommodates switching apparatuses. <P>SOLUTION: The sealed gas-insulated switchgear insulates phases, isolating poles, and the switchgear and the ground by pressure-filling the insulation gas into the sealed vessel 2 containing the apparatuses such as bus bars constituting the switchgear, a disconnector and a blocker. In the sealed gas-insulated switchgear using air dry as the insulation gas, a helium gas of which the gas leakage can be detected by a gas detector is pressure-filled into the sealed vessel 2 together with the dry air, and the gas leakage occurs in the sealed vessel by some accident, a probe 10a of a helium detector 10 is made close to a sealed point of sealed points 2a of the sealed vessel, and the point of the gas leakage is specified by checking the existence of the helium gas that leaks accompanied by the insulation gas. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p>
申请公布号 JP2004336892(A) 申请公布日期 2004.11.25
申请号 JP20030129688 申请日期 2003.05.08
申请人 FUJI ELECTRIC SYSTEMS CO LTD 发明人 KUMAGAI HIROSHI
分类号 H02B13/055;H01H33/56;H02G5/06;(IPC1-7):H02B13/055 主分类号 H02B13/055
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