| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an equipment free from flashover even when the DC polarity is inverted by forming the notch parts 11 on the bonding faces with an insulating cylinder 3, of a flange at the high-tension side and a flange at the earthing side of the insulating cylinder, and filling a resin between the notch parts and the insulating cylinder. SOLUTION: The notch parts 11 are formed on the bonding faces with an insulating cylinder 3 of the metallic flanges 2a, 2b at the high-tension side and earthing side of the insulating cylinder 3. Whereby a triple junction part formed by the gas, an insulating matter and a metal is retracted deep in the flange space, the electric field is relaxed, and the flashover voltage is increased. Further a similar effect can be obtained by lowering a position of a high-tension side electrode 10 of an internal element 4 to a lower-tension side with respect to a tip 8 of the highA tension side flange. The flashover voltage is increased by forming the notch parts 11 on the bonding faces with the insulating cylinder 3, of the metallic flanges 2a, 2b at the high-tension side and the earthing side of the insulating cylinder 3, and filling the resin between the notch parts 11 and the insulating cylinder 3.</p> |
