| 摘要 |
PROBLEM TO BE SOLVED: To provide a method capable of fully impregnating a minute air gap of a coil with insulating varnish, in relation to the coil difficult of varnish impregnation, accompanied by the complication of a coil shape, the increase in line winding performance, the adhesion of an insulating tape, and the insertion of a interphase paper. SOLUTION: In the coil impregnation method of insulating varnish containing at least a resin as an essential ingredient, the insulating varnish is impregnated so that supersonic vibration may be impressed to the coil at the time of the insulating varnish impregnation to the coil. COPYRIGHT: (C)2006,JPO&NCIPI
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