Dielectric breakdown of amorphous and semicrystalline polymers

Dielectric breakdown and endurance of polymers have been of great interest for researchers since years. Procedures for the determination of the dielectric strength at power commercial frequencies of solid insulating material are various and will often give different results. This paper presents short-term dielectric breakdown measurements for two different insulating materials at various thicknesses. The effect of thickness, surrounding medium and crystallinity is discussed.