The DC high voltage generator is mainly suitable for DC withstand voltage test of high voltage electrical equipment. Among them, insulation resistance test, insulation product DC withstand voltage test, and cable test are the three commonly used power tests because of its small size, light weight, more beautiful appearance, and convenient Working in the field, it is very popular among electric workers. So what kind of electric power test can the DC high-voltage generator be used for?

1. Insulation resistance test

Insulation resistance is the most basic insulation index for electrical equipment and circuits. A DC voltage is applied to the dielectric. After a period of polarization, the resistance corresponding to the leakage current flowing through the dielectric is called insulation resistance. When pressure is applied to the tested material, the current on the tested material will not reach a stable value instantaneously, but has a decay process. A larger charging current flows through, followed by a slow-decreasing absorption current for a long time, and finally reaches Relatively stable conduction current. The higher the measured resistance value, the longer it will take to reach equilibrium. Therefore, in order to correctly read the measured resistance value during the measurement, the value should be read after it stabilizes.

2. DC withstand voltage and leakage test

For good insulation, the leakage current is very small under the action of DC voltage. At the same time, under the same DC voltage, the current through the insulation decreases with the extension. In the case of good insulation, with the increase of the applied DC voltage , As the ion movement speeds up, the leakage current increases, and the leakage current has a linear relationship with the increase of the applied voltage, and the rise is small.

3. Cable DC withstand voltage test

After the test, the voltage is three times the rated voltage of the cable. Under the specified test voltage, record the leakage current and check the withstand voltage of the DC high-voltage generator with a high-voltage megohmmeter. The method of use is conventional connection, one phase connected to one phase withstand Voltage, one phase is equipped with withstand voltage device, the other phase is two-phase grounded, and the three-phase resistance is three times.