| 摘要 |
PURPOSE:To enable simplifying terminal treatment operation without losing the economical merit of an aluminum material by using the aluminum material for main winding conductors and a copper material for tap winding conductors. CONSTITUTION:Main winding conductors 1, 6 are made of an aluminum material and tap winding conductors 22-25 are made of a copper material. For example, winding terminals 22a, 22b are made of the extensions of both the ends of the winding conductor 22 and the other winding terminals 23a, 23b-25b are similarly connected direct to the terminals of a tap switch and are made tap terminals 13-18. For this reason, even if number of tap winding conductors 22-25 increases, the terminal treatment of connecting a compound connecting conductor 8 is only for the terminals 1a, 1b, 6a and 6b of the main windings 1 and 6. The ratio occupied in the total windings by the tap winding conductors 22-25 is also approx. 10-20% and even if the copper material is used for tap winding conductors, the economical merit of using the aluminum material for the main winding conductors 1, 6 is not lost. |
