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DC High Voltage Generator
The new DC high voltage generator provides a DC high voltage source, specifically used to test the electrical insulation strength and leakage current of power devices. The intelligent DC high voltage generator is newly researched, designed, and manufactured according to the requirements of the Chinese industry standard ZBF 24003-90 "General Technical Conditions for Portable DC High Voltage Generators". It is a product of the new era. The intelligent DC high voltage generator has multiple protection functions, such as low-voltage overcurrent, low-voltage overvoltage, high-voltage overcurrent, high-voltage overvoltage, zero-position protection, and non-grounding protection. Fault sampling uses dedicated sensors with nanosecond-level response time, and the optical isolation components are also nanosecond-level. The action time can completely cut off the DC main circuit within 10 microseconds, thereby maximizing the protection of the instrument from damage.
The DC high voltage generator is abbreviated as DC high voltage generator, also known as high voltage generatorhigh voltage generator, medium frequency DC high voltage generator, high voltage DC generator, DC generator, portable DC high voltage generator, high frequency DC high voltage generator, AC/DC high voltage generator.
The DC high voltage generator adopts a medium frequency voltage doubling circuit. The new DC high voltage generator applies 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 DC high voltage test to achieve high quality, portability, and the ability to withstand rated voltage discharge without damage. The DC high voltage generator has multiple protection functions, such as low-voltage overcurrent, low voltage overvoltage, high-voltage overcurrent, high-voltage overvoltage, zero-position protection, and non-grounding protection. The fast shutdown protection of the driving signal uses dedicated sensors for sampling at the output end, with a response time at the nanosecond level. Through nanosecond-level optical isolation components and nanosecond-level analog switches, the driving signal of the power amplifier circuit is cut off within 2 microseconds, ensuring that power devices are not damaged in the case of output short circuit. It refers to the high-voltage power supply mainly used in insulation and leakage detection. There is no strict distinction between high-voltage power supply and high-voltage generator. The DC high voltage generator is the first in the industry to adopt a segmented structure, which can be used for both high voltage levels and lower voltage levels while maintaining its accuracy. Taking 100/200kV/2mA divided into two sections as an example, when used as a single section, it can be used as 100kV/2mA for DC high voltage tests of electrical equipment in systems of 35kV and below, ensuring measurement accuracy and avoiding overkill; when used as two sections, it can be used as 200kV/2mA for DC tests of zinc oxide arresters in 220kV segmented, 110kV and below, and DC withstand voltage tests of cross-linked cables. It truly achieves one machine with two uses, greatly facilitating on-site users. It is mainly used to study the insulation strength of electrical equipment under DC high voltage, the insulation strength of converter station equipment and insulating materials under DC high voltage, corona and ion flow and their effects on DC transmission lines, and to conduct leakage current tests on AC/DC power equipment. In addition, it can also be used as a power source for other high-voltage test equipment such as impulse voltage generators, impulse current generators, and oscillating circuits. In other scientific and technological fields, such as physics (accelerators, electron microscopes, etc.), electronic medical equipment (X-ray), industrial applications (exhaust gas precipitation, electrostatic painting, etc.), or electronic communications (television, broadcasting stations), it is also widely applied.
