PROBLEM TO BE SOLVED: To enhance preheeling effect by heating a metallized film at a uniform temperature.;SOLUTION: A preheeling device (30) comprises a voltage application unit (32) which removes a metal film (23) on the periphery of an insulation defect part (25) existing in a metallized film (21) by applying a voltage of 500 V to the metallized film (21) for a film capacitor (11) having the metal film (23) formed on one surface of a film (22), and a heating unit (40) which preheats the metallized film (21) by feeding a current between two points on the surface (23a) of the metallized film (21) where the metal film (23) is formed before a voltage of 500 V is applied to the metallized film (21).;COPYRIGHT: (C)2012,JPO&INPIT
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