MANUFACTURING METHOD OF MOLD COIL, MANUFACTURING SYSTEM OF MOLD COIL, AND DESIGN METHOD OF MOLD COIL

摘要

PROBLEM TO BE SOLVED: To suppress partial discharge due to a cavity, even when a cavity is generated in a cured resin by a void.SOLUTION: A manufacturing method for mold coil includes an impregnation step of impregnating the interior of a coil body with resin, by immersing a coil body formed by winding a conductor into liquid resin. The impregnation step includes pressure adjustment processing for adjusting the atmospheric pressure to a first pressure higher than the pressure at the time of lowest spark voltage, determined based on the product of the atmospheric pressure and the insulation distance, i.e., the distance between adjoining conductors, by using th Paschen's law.SELECTED DRAWING: Figure 6