| 摘要 |
<p>PURPOSE:To prevent unit wirings located nearest a tap from being heated abnormally even if a large load current is made to flow through the windings by a method wherein leakage magnetic path materials, through which leakage magnetic fluxes generated by the unit wirings are made to pass, are respectively provided in the vicinities of the adjacent unit wirings, which are different from each other in the directions of their currents. CONSTITUTION:An exciting current flows from a unit wiring 7 situated on the side on one side of a tap T toward a unit wiring 6 situated on the other side of the tap T and a load current flows through a load connected to the tap T from the winding 6 toward the tap T so as to cancel the exciting current. The direction of the current of the winding 6 on the side on one side of the tap T becomes reverse to the direction of the current of the winding 7 on the other side of the tape T with the tap T as a reference, leakage magnetic fluxes generated by the respective windings 6 and 7 are applied to each other between the windings 6 and 7 on both sides of the tap holding the tap T between them and a leakage flux density between the windings 6 and 7 becomes excessive. However, the leakage magnetic fluxes respectively flow in leakage magnetic path materials 12 and 12 and the leakage magnetic flux generated by the winding 6 and the leakage magnetic flux generated by the winding 7 do not affect each other. Thereby, even if the load current is increased, an abnormal heat is not generated in the windings 6 and 7.</p> |
