The metallized film capacitor heats up due to its own loss under the action of electric field.One part of the heat is dissipated into the surrounding environment and the other part heat keeps the temperature inside the capacitor rise

probably leading to the change of electrical performance of the c apacitor.Therefore

the filling medium of the capacitor plays a very important role in the heat dissipation of the capacitor.In this paper

the heat dissipation of self-healing low-voltage capacitor filled with different number of quartz sand for independent protection of components on the market is compared

and influence of quartz on the heat dissipation of capacitor is discussed.