Cylindrical winding for induction electrical apparatus
    2.
    发明授权
    Cylindrical winding for induction electrical apparatus 失效
    感应电器用圆柱绕组

    公开(公告)号:US3996544A

    公开(公告)日:1976-12-07

    申请号:US641931

    申请日:1975-12-18

    摘要: A multi-layer winding comprising cylindrically-wound conductors and having different diameters are arranged concentrically. The layer windings are connected in series from inside to outside. Each layer winding has a layer insulator arranged on the inside thereof with a flange. Inwardly of the layer insulator and adjacent to the next inward layer winding is formed an oil gap functioning as a cooling-oil path. That oil-gap-equivalent part at and in the vicinity of the ends of the layer winding where the potential is maximum between adjacent layer windings is larger than the other parts thereof. This construction reduces the intensity of the electric field at the ends of each layer winding and eliminates partial discharge, thus improving the reliability and rendering the multi-layer winding compact and light in weight as a whole.

    摘要翻译: 包括圆筒形导体并具有不同直径的多层绕组同心地布置。 层绕组从内到外串联连接。 每层绕组具有布置在其内侧的具有凸缘的层绝缘体。 在层间绝缘体的内侧并与下一个向内层绕组相邻形成有用作冷却油路径的油隙。 相邻层绕组之间电位最大的层绕组端部附近的油间隙部分大于其它部分。 这种结构降低了每层绕组端部的电场强度,并且消除了局部放电,从而提高了可靠性,并使多层绕组的重量轻整体呈现出来。