The DC high-voltage generator under the UHV power company can help many power workers conduct various power tests more conveniently.
Correctly choose a microampere meter when selecting a DC high-voltage generator
DC high-voltage generators are mainly used in power maintenance departments, industrial and mining, metallurgy, steel and other enterprises to conduct DC withstand voltage tests on high-voltage electrical equipment such as zinc oxide lightning arresters, power cables, transformers, generators, and high-voltage switches.
The DC high voltage generator adopts an intermediate frequency voltage doubling circuit, and the new DC high voltage generator adopts PWM pulse width modulation technology and high-power IGBT devices, and adopts special shielding, isolation, and grounding measures according to electromagnetic compatibility theory. High quality DC high voltage testing, portable, capable of withstanding rated voltage discharge without damage.
Before using a DC high-voltage generator, it is required to carefully check whether there is sufficient safety distance between the high-voltage output line and other projects, and whether the high-voltage compression side of the test object has sufficient safety distance. After the test is completed, the tester must reduce the voltage of the DC high-voltage generator to zero, turn on the obvious power disconnection point, and then use a discharge rod to discharge the test object. The entire discharge process is divided into two parts.
During discharge, the discharge rod must not immediately come into contact with the test object. Firstly, the head of the discharge rod should gradually approach the object being tested, and there should be a hissing discharge sound at a certain distance from the air gap. When silent, the discharge rod can be directly connected to the ground wire to discharge. The service life of the microampere meter for DC high-voltage generators is directly related to the operation method of the tester. The quality of wiring and discharge time are directly related to the service life of microampere meters.
Specifications and configuration of microampere meter for DC high-voltage generator:
In routine tests, the DC leakage test of zinc oxide lightning arrester refers to a maximum current value of 1000ua under 1mA reference voltage and 75% reference voltage. In routine testing, the DC leakage test current of the cable is relatively small. The microampere meter of a DC high-voltage generator usually uses a three and a half digit LCD (range: 0-1999ua), which is sufficient for routine DC leakage testing projects. Only when frequently using large capacity cables, should the range of the microampere meter be larger because the charging current is relatively high when the cable is pressurized. It is recommended that users choose a four and a half digit LCD microampere meter when purchasing. DC high voltage generator (range: 0-19999ua or 0-19999.9ua).
DC high-voltage generators are widely used in the power sector, industrial and mining, metallurgy, steel and other enterprises. The DC high voltage test is conducted on high-voltage electrical equipment such as zinc oxide lightning arresters, power cables, transformers, and generators. It is an important equipment in the field of high voltage testing, and its selection and use should follow the following principles:
Selection of DC High Voltage Generator:
1. The product should pass the type test
2. The product needs to pass the network access evaluation organized by the relevant provincial power testing and research institute. Provinces that fail the evaluation can participate in the evaluation results of other provinces
3. The product should have enterprise standards and not be lower than industry standards
We are a professional manufacturer of DC high voltage power supplies, with complete process equipment and testing equipment, as well as corresponding engineering and production personnel.
