| 摘要 |
PURPOSE:To obtain a compact light weight induction apparatus with high surge resistance by a method wherein a disc insulating barrier is supported by a spacer and arranged between interleave winding units and oil passages are provided on top and bottom thereof. CONSTITUTION:A disc coil with an insulting conductor wound in a plurality of turns is arranged in a plurality of layers separately in the direction of the winding axis and interleave windings h1, h2, h3 are prepared by connecting the insulating conductors in such a way that they are inserted in between the coils and then a disc insulating barrier (i) is arranged therebetween. On the upper and bottom surfaces of the barrier (i), insulating spacers (j) are attached separately so as to partially sandwich the barrier (i) to form oil passages (k) for cooling are formed between winding unit (h). Although insulation is highly requested between the winding units (h), inpulse penetrating break down strength in this portion is by far improved by the installation of the insulating barrier (i), so that the spacing between the units (h) can be narrowed. In addition, the insulating film on the conductor can be made thin and the winding area rate can be improved, thus apparatus can be minimized in size. |
