| 摘要 |
PURPOSE:To remove leakage of resin, and to stabilize the electric and the mechanical characteristics of a resin molded coil by a method wherein a foam sheet or tape is wound around the inlet/outlet parts of transition wires in cooling air paths between inside coils and outside coils to form foam layers. CONSTITUTION:Because foam sheets 17 are wound around transition wires 16 at a cooling air path part between the inside coil 11 and the outside coil 12 of a low voltage coil, transition wires 26 at a cooling air path part between a high voltage coil 23 and an outside coil 28, and the respective lead out parts of terminals 27 projecting from the outer peripheral side of the outermost layer coil, when the foam sheets 17 thereof are heated at the temperature of 120 deg.C or more at resin impregnating time, the sheets foam to 3-5 times. Accordingly, because gaps at the lead out parts of the transition wires 16, 26 to insulators 15a, 15b and 15e, 15f, and gaps at the terminal parts to the outermost periphery insulating layer 36 are blocked according to foaming action of the foam layers 17, leakage of resin from the parts thereof can be checked. |
