| 摘要 |
PURPOSE:To facilitate assembling of an insulative barrier at connecting part and improve insulative strength, by a method wherein length between laps of a plurality of insulative barriers becomes smaller from electric connecting side to outside. CONSTITUTION:A lead wire taken from a transformer winding enclosed in a transformer tank 3, i.e. a first center conductor 29a is provided at end part with a connecting fitting 28a and at outer circumference with an inner electrode 30, an insulation coating layer 30a and a plurality of insulative barriers 26 arranged in concentric relation at prescribed distance. The plurality of insulative barriers 26 are so constituted that a first insulative barrier 26a at innermost layer is shorter than the inner electrode 30 by prescribed length and a second insulative barrier 26b is longer than the first insulative barrier 26a. The insulative barriers are varied in length stepwise in sequence. Insulative barriers 27 on outer circumference of a second center conductor 29b are also varied in length stepwise. Abutting lap dimensions l1-ln of the first and second insulation barriers become smaller from the innermost layer to the outermost layer. |
