| 摘要 |
PURPOSE:To shorten distance between coils and to relieve electrostatic field concentration to be generated at terminals of tap-lead group by a method wherein leader positions of tap-lead are disposed to left and right mutually and distance between each tap-lead and facing coil is changed successively at every tap-lead. CONSTITUTION:Tap-leads 51, 52, 53,...5n are disposed to left and right with a tap-lead 51 in center, together with distance (insulating distance) between each tap-lead 51, 52, 53,...5n-1, 5n and facing coils 6, 7 are successively changed. For example, if necessary insulating distance for voltage V11 which is generated between the central tap-lead 5, and the coil 6 shown in the figure is L11 and necessary insulating distance for voltage V12, which is generated between the tap-lead 51 and coil 7, is L21, the distance between the coil 6 and the coil 7, with the tap- lead 51 between, is regarded as L11+L21. Necessary insulating distance L12 (L12<L11) for voltage V12(V12<V11), which is generated between next tap-lead 52 and the coil 6. Thus, each distance is changed in position. |
