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The working principle and operation precautions of the withstand voltage tester.

  • 2022-11-07 11:26:51
Withstand voltage tester, also called electrical insulation strength tester, or dielectric strength tester, also called dielectric breakdown device, dielectric strength tester, high voltage tester, high voltage breakdown device, withstand voltage tester, etc. It is mainly used for the withstand voltage test of polyethylene insulated power cables, and can also be used for the insulation withstand voltage test of large power transformers. The withstand voltage tester is a new method to test the withstand voltage of power cables with ultra-low frequency and high voltage.

Its working principle is: a voltage higher than normal operation is applied to the insulator of the device under test for a specified period of time, and the voltage applied on it will only generate a small leakage current, and the insulation is better. The test system is composed of three modules, the program-controlled power module, the signal acquisition and conditioning module and the computer control system. Select two indicators of the withstand voltage meter: the value of the maximum output voltage value and the maximum alarm current value.



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