| 摘要 |
PURPOSE:To level the percentage impedance voltage by a process wherein between the primary-and-secondary winding when plurality of transformer elements are interconnected to make an autotrasformer, each transformer element is respectively and dispersively provided with a shunt winding, a serial winding and a tap winding and further a serial winding is serially while a shunt winding is in parallel connected. CONSTITUTION:The iron core 10 of transformer element 20A on one side is wound around by the third winding 12, shunt winding 14 and the serial winding 16 having about 60% of windings. The iron core 10 of transformer element 20B on the other side connected thereto is wond around by the shunt winding 14, serial winding said windings 16 and the windings 18 are all serially connected, while the winding 16 having about 40% of windings and the tap winding 18. Next, 14 are each other in parallel connected and the winding 12 is separately pulled outside. In this way among all of the highest, middle and the lowest taps the parcentrage impedance voltage between the primary-secondary windings of the single phase-single winding trasformer is leveled. |
