| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas-insulation electric device capable of surely capturing metallic foreign matters inside the gas-insulation electric apparatus, and continuously and surely capturing the captured metallic foreign matters without making them float again even when an adhesive material is deteriorated or the device is vibrated. <P>SOLUTION: A high voltage conductor 2 is installed through an insulation spacer inside a ground tank 3 filled with an insulation gas, and a metal plate 5 in such a shape that recesses 5a, 5b and 5c and projections 5e-5h are alternately arranged for forming a low electric field part for not making the metallic foreign matters float is provided on a bottom part of the ground tank 3. Further, adhesive layers 6a, 6b and 6c are provided only in the low electric field part of the recesses 5a, 5b and 5c, and when the width of the recess is defined as d, the depth is defined as h, a length of the metallic foreign matter is defined as L and α=(h-L)/d is defined, the recesses are configured such that α becomes 0.8 or larger. <P>COPYRIGHT: (C)2013,JPO&INPIT |
