The 60kV/200mA water-cooled DC high voltage generator is designed and manufactured specifically for leakage current and DC withstand voltage tests on water-cooled generators. The guiding principles of its design and manufacture are as follows:
1. Due to the large conduction current in the windings of large water-cooled generators, it ranges from about 20 to 150mA at the test voltage. Without a DC high voltage generator of sufficient capacity, it is impossible to raise the voltage;
2. Currently, the output current of domestic DC high voltage testers is generally within 10mA, and high voltage generators with an output current of 200mA are a blank;
3. DC testing can detect through-type insulation defects in general high-voltage electrical equipment, but for motors, it can detect local insulation defects (end insulation of stator coils), which cannot be replaced by other tests;
4. To accurately measure the leakage current of water-cooled generator sets, the 60kV/200mA series water-cooled DC high voltage generator has specially designed compensation circuits for various interference currents, which can completely eliminate the influence of stray currents and polarization potential interference from the water collection pipe during testing, truly measuring the current of the test object;
The 60kV/200mA series water-cooled DC high voltage generator adopts a medium-frequency voltage doubling circuit. It applies new PWM pulse width modulation technology and high-power IGBT devices. According to electromagnetic compatibility theory, special shielding, isolation, and grounding measures are adopted. This enables the water-cooled DC high voltage generator to achieve high quality, portability, and the ability to withstand discharge at rated voltage without damage;
Product aliases: DC high voltage generator, high voltage generator, medium-frequency DC high voltage generator
