| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a grounded metal base to which a plurality of pieces of grounding metals are installed, when a multi-core transmission line having a large induced current is grounded. SOLUTION: The grounded metal base is composed of a rod-shaped grounded conductor 34, of a length with a plurality of pieces of grounding metals 24 capable of being installed on the grounded conductor, an oval corona prevention ring 32 on which the rod-shaped grounded conductor 34 is installed facing in the direction of the long axis thereof, and a plurality of brackets 36A and 36B for installing the corona prevention ring 32 on a multi-core transmission line 10, so that the corona prevention ring is positioned outside an area encircled by the plurality of the conductors of the multi-core transmission line 10. The longer bracket 36A has two joint portions 44A and 44B, and the shorter bracket 36B has one joint portion 48 so that the corona prevention ring 32 can be horizontally installed.</p> |
