The DC high-voltage generator plays a role in safety protection in the field of power devices. It is a device specifically used to test the electrical insulation strength and leakage current of power devices. To understand the insulation preventive measures of related equipment, it is necessary to conduct a withstand voltage test with the DC high-voltage generator. What are the steps of this test? This article will provide a detailed explanation for you.
1. Before conducting the load test of the DC high-voltage generator, a high-voltage shielding microammeter needs to be installed at the high-voltage output end on the voltage booster cylinder. At the same time, the corresponding dedicated high-voltage cables should be connected to the test sample and the microammeter respectively.
2. Inspect the test sample, DC high-voltage generator, voltage booster cylinder, discharge rod, grounding wire, and test connection wires to ensure their correctness. Check whether the grounding wire is accurately connected. Verify whether the high-voltage safety distance is within the standard range. Only after ensuring everything is correct can the high-voltage test be officially initiated.
3. After checking and confirming that the test items and DC high-voltage generator are all in good condition, turn on the single-phase AC 220V power switch. The green light will come on, indicating that the power is connected. Then, the DC leakage and DC withstand voltage tests can be officially started.
4.Press the red button. The red light comes on, indicating that the high voltage is connected. Wait for the high voltage value to rise.
5. When adjusting the voltage regulating potentiometer, proceed smoothly in a clockwise direction. The output value starts from zero and continuously increases. The speed should be 3-5 kV per second. For test samples with large capacitance, the voltage increase speed should be slower; otherwise, it is prone to cause voltage overshoot. At the same time, closely monitor the ammeter to ensure that the charging current does not exceed the maximum value of the charging current of the DC high-voltage generator. When the current or voltage reaches the target value, record the values of the voltmeter and ammeter at the specified time in a timely manner.
6. After the test is completed, reduce the voltage of the test item, set the voltage regulating potentiometer to zero, then press the green button immediately, indicating that the high voltage has been cut off, and turn off the power switch.
7. After completing the withstand voltage test of the DC high-voltage generator, a discharge rod should be used to discharge the test sample multiple times. Only after the discharge is completed can one approach for subsequent operations to ensure safety.
The DC high-voltage generator plays a crucial role in the field of power devices and is an indispensable equipment. This article introduces the correct procedures for conducting withstand voltage tests with the DC high-voltage generator. Instruments that require power-on testing have certain risks. If the operation is incorrect, it may even pose a threat to life safety. It is necessary to understand the correct operation procedures for the withstand voltage test of the DC high-voltage generator.
Post time: Jun-17-2026