| 摘要 |
<p>PURPOSE:To provide a primary coil for voltage transformer which can be wound continuously without stopping a winding machine. CONSTITUTION:Layer insulation layers 12a, 12b,... and unit coils 13a, 13b,... are laminated alternately and concentrically and insulation layers 14a, 14b,... for preventing the movement of wire are formed at the end parts of layer insulation layers thus forming a primary coil. The layer insulation layer and the insulation layer for preventing the movement of wire are formed by winding an insulating tape 16 having width narrower than the coil. Number of turns required for formation of one layer insulation layer and the insulation layer for preventing the movement of wire is set equal to the number of turns of unit coil and a wire 17 is wound concurrently with the insulating tape 16 thus forming the unit coil, the layer insulation layer, and the insulation layer for preventing the movement of wire.</p> |
