TRANSFORMER, STATIONARY INDUCTION APPARATUS AND WINDING METHOD THEREFOR

To provide a stationary induction apparatus in which a winding wire is made hard to enter a clearance gap between a winding end part of a first layer of the winding wire and a winding start part of a second layer by a mechanical force which is generated in the case of excitation rush or short-circuiting.SOLUTION: The present invention relates to a stationary induction apparatus comprising an iron core and a coil which is provided in a leg of the iron core. The coil includes: a bobbin; an end patch that is formed substantially over a circumference in an end of the bobbin; and a winding wire which is spirally wound around the bobbin. The winding wire consists of: a winding wire of a first layer that is wound around a lower layer; and a winding wire of a second layer that is wound around an upper layer of the first layer. The end patch includes an inclined part in one end and is formed in a direction that is similar to a winding direction of the winding wire of the first layer. The winding wire of the first layer is wound around the inclined part of the end patch, rides thereon and is folded and the winding wire of the second layer that is the upper layer, is spirally wound.SELECTED DRAWING: Figure 2 【課題】励磁突入や短絡時に生じた機械力によって、巻線の第１の層の巻き終わり部と第２の層の巻き始め部との隙間に巻線が入り込みにくい静止誘導機器を提供する。【解決手段】鉄心と、前記鉄心の脚部に設けたコイルを備える静止誘導機器であって、前記コイルは、ボビンと、前記ボビンの端部に略１周に渡って形成した端当と、前記ボビンに螺旋状に巻き付けた巻線を備え、前記巻線は、下層に巻き回された第１の層の巻線と前記第１の層の上層に巻き回された第２の層の巻線からなり、前記端当は、一端に傾斜部を有し、前記第１の層の巻線の巻き回し方向と同様の方向に形成されており、前記第１の層の巻線は、前記端当の傾斜部に巻き回して乗り上げ、折り返して上層である第２の層の巻線を螺旋状に巻き付けたことを特徴とするものである。【選択図】 図２