Dielectric strenght

This method is used to assess the dielectric strength of an insulating material.

It calculates the voltage at which a harmonic alternating voltage collapses upon destruction of the insulating material.

 

Voltage resistance 

Test specimen usually Ø 80 mm, 2 mm thick
Max. test voltage 100 kV (50 Hz)
Current on breaking 40 mA
Surrounding medium Insulating oil
Electrode pairs Plate/plate
Ball/ball
Ball/plate