| 摘要 |
PURPOSE:To improve the dielectric strength on the creeping surface of a winding end part by a method wherein an insulating barrier is inserted from outside along the direction of a winding stack, and the outside end part of the insulating barrier is protruded from the winding end part. CONSTITUTION:On a high voltage winding 7, an angle-formed insulating barrier 20 is inserted into the stack-directioned end part located between the adjoining colling ducts 4 from outside of a winding along the stacked face of winding. The outer end part of the barrier 20 is bent toward ouside of the built direction of windig. An insulating plate 21 is arranged in horizontal direction between an earthing material 11 and the end part of a winding, and the bent part of the barrier 20 is connected to the insulating plate 21. As a result, the dielectric strength of the creeping surface of the winding end part can be improved, and the discharge starting voltage of the winding end part can also be improved remarkably. |
