Self-healing performance is an important parameter indicator of metallized film capacitor and a good production process can effectively improve the self-healing performance of metallized film capacitor.At present

the high-frequency pulse current method is mainly used in China to analyze self-healing.However

the other test method

namely

the sound pressure test method

will be used in this paper

which mainly uses the principle of sound pressure matrix microphone positioning

judges self-healing and orientation and studies the impact of the change of production process parameters on component self-healing so to provide a basis for improvement of the production process.