| 摘要 |
<p>PROBLEM TO BE SOLVED: To surely detect generation of decomposed gas due to contact fault of conductor connecting part of gas-insulated device by providing a gas intake port through isolation from an area directly above the conductor connecting part, until the position where temperature of decomposed gas generated becomes lower by the predetermined value or more from the temperature of an area directly above the conductor connecting part. SOLUTION: If a contact fault occurs in a conductor connecting part 4, irregular heat generation 9 is generated and decomposed gas 10 is generated. A gas intake port 11 connected to a decomposed gas detector 7 is isolated from the point A in the vessel axis direction. The position of point B is selected at the area where concentration of decomposed gas generated is maintained and gas temperature is as low as not influenced by temperature characteristic of the decomposed gas detector 7. As a result, the decomposed gas generated due to contact fault of conductor connecting part 4 can surely be detected.</p> |
