| 摘要 |
<p>PROBLEM TO BE SOLVED: To miniaturize a gas insulation switching device where a plurality of lightening arresters are installed and to reduce its price. SOLUTION: A standard operation duty lightening arrester is applied to a lightening arrester 4 for transmission line being installed at a connection terminal with an overhead line 2, and a light operation duty lightening arrester where the limitation voltage value is set higher than the limitation voltage characteristics of the standard operation duty lightening arrester is applied to a lightening arrester 26 for transformer being installed at a connection terminal with a transformer 3, thus securing the withstand voltage protection of each equipment and at the same time setting one portion of the lightening arrester to the light operation duty arrester for miniaturization and hence miniaturizing a gas insulation switching device and reducing price.</p> |
