Product Introduction:
Adopting medium frequency rectification and filtering technology, it solves the disadvantages of large ripple coefficient and unstable waveform of power frequency DC high voltage generating devices. The product meets the requirements of the newly promulgated national electric power industry standard ZGF24003-90 "General Technical Conditions for DC High Voltage Generators DL/T 848.1—2004", and is widely used for DC withstand voltage tests and leakage current tests of electrical equipment. In particular, it is equipped with the function of testing the voltage U1mA under 1mA of zinc oxide arrester and the leakage current under 0.75U1mA. It is widely applicable to DC high voltage tests on zinc oxide arresters, magnetic blow arresters, power cables, generators, transformers, switches and other equipment in power departments, industrial and mining enterprise power departments, scientific research units, railways, chemical industry, power plants, etc. It is the most ideal replacement product in the new century.
The main components are selected from advanced technology components from the United States, Germany, Japan and other countries, making the instrument more reliable and stable. The voltage doubling cylinder is small in size, large in capacity, and has strong overload capacity, which is convenient for on-site operation and testing.
Adopting medium frequency voltage doubling circuit, it takes the lead in applying the latest PWM medium frequency pulse width modulation technology, closed-loop adjustment, and adopts large voltage feedback, greatly improving voltage stability. Using high-performance high-power IGBT devices and their driving technology, and according to electromagnetic compatibility theory, special shielding, isolation and grounding measures are adopted, making the DC high voltage generator high-quality, portable, and able to withstand rated voltage discharge without damage.
Product Features:
◆ The chassis adopts aluminum alloy chassis.
◆ Adopting medium frequency voltage doubling circuit, applying PWM pulse width modulation technology and high-power IGBT devices.
◆ Adopting large voltage feedback, the output voltage stability is high, and the ripple coefficient is ≤3%.
◆ Full-range smooth voltage regulation, with fine voltage adjustment, adjustment accuracy ≤0.5%, stability ≤1%, voltage error ±(1.5%±2 digits), current error ±(1.5%±2 digits).
◆ The boost potentiometer starts from zero.
◆ 0.75UDC1mA function button, convenient for zinc oxide arrester test, accuracy ±(3%±2 digits).
◆ Overvoltage protection is set by dial code, clear at a glance, error ±2%.
◆ The voltage doubling cylinder adopts new materials, lightweight and sturdy. The surface is coated with special insulating material, with good electrical performance and strong moisture resistance.
◆ Complying with DL/T848.1-2004 technical requirements, and has passed the type test of the Electrical Equipment Quality Inspection and Testing Center of the Ministry of Electric Power, strictly implementing the enterprise standard for factory delivery.
