Common failure modes and failure mechanisms of capacitors(1)

    1.Breakdown short circuit; fatal failure.

    2. Open circuit; fatal failure-change of electrical parameters (including excess capacitance, increased tangent of loss angle, decreased insulation performance or rising leakage current, etc.) partial function failure.

    3. Leakage; partial functional failure.

    4. Lead corrosion or fracture; fatal failure.

    5. Insulator rupture; fatal failure.

    6. Fly-arc on the insulator surface; partial failure of function.

    The causes of capacitor failure are various. All kinds of capacitors have different materials, structures, manufacturing processes, properties and operating environments, and different failure mechanisms.