| 摘要 |
<p>PURPOSE:To provide a gas-insulated switchgear wherein it is small-sized, its degree of freedom in a designing operation is large and it is optimum for a UHV system by improving the arrangement and connection constitution of at least two lightning arresters which are situated on the side of the breaker of a conduit-line bus. CONSTITUTION:A gas-insulated switchgear which is provided with a breaker 22, with a line-side bushing 24 and with a bushing-connecting conduit-line bus 15 which connects the breaker 22 to the bushing 24 is installed on the ground on which an open channel K1 has been formed. A conduit-line bus 15 is passed inside the open channel K1, and three lightning arresters 10, 11, 12 are connected to the conduit-line bus 15. Two 10, 11 out of the three lightning arresters 10, 11, 12 are installed in the neighborhood of rise parts 13, 14 where the conduit- line bus 15 comes in and out from the open channel K1.</p> |
