High frequency DC high voltage generator

The LYZGS400KV high-frequency DC high voltage generator is 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 technological product of the new era - portable DC high voltage generator. It is suitable for conducting DC high voltage tests on equipment such as zinc oxide lightning arresters, magnetic blow lightning arresters, power cables, generators, transformers, switches, etc. in power departments, factories and mines, scientific research units, railways, chemicals, power plants, etc. It is an ideal replacement product for the new century

LYZGS400KVHigh frequency DC high voltage generatorProduct Introduction

It is 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 technological product of the new era - portable DC high voltage generators. High frequency DC high voltage generators are suitable for conducting DC high voltage tests on equipment such as zinc oxide lightning arresters, magnetic blow lightning arresters, power cables, generators, transformers, switches, etc. in power departments, factories and mines, research units, railways, chemical industries, power plants, etc. It is an ideal replacement product for the new century.

Adopting high-frequency voltage doubling circuit, utilizing PWM high-frequency pulse width modulation technology, closed-loop adjustment, and adopting voltage feedback to significantly improve voltage stability. Use high-performance high-power IGBT devices and their driving technology, and adopt special shielding, isolation, and grounding measures based on electromagnetic compatibility theory. The DC high-voltage generator achieves high quality, portability, and can withstand rated voltage discharge without damage.

Instructions for Use

1. Instructions for using panel components

⑴ High frequency output and voltage/current measurement cable quick connection multi-core socket: used for connecting the chassis with the voltage doubling part. When connecting, simply align the white dot on the cable plug with the white dot on the socket and rotate it clockwise to the correct position. To disassemble, simply turn the cable plug counterclockwise. Attention: When installing or removing the plug, please grip the metal ring of the plug tightly and rotate it. It is strictly prohibited to hold and pull the cable to rotate, in order to avoid disconnection between the plug and the cable.

⑵ Digital voltmeter: LCD displays the DC high voltage output voltage in kV with a small resolution of ± 0.1kV.

⑶ Digital ammeter: LCD displays the DC high voltage output current in uA with a small resolution of ± 0.1uA.

⑷ Power fuse holder: The fuse is 10A.

⑸ Power input socket: single-phase AC 220V ± 10%, 50Hz. Connect the randomly configured power cord to the power input socket (the socket comes with a built-in fuse)

Tube 10A or separate safety seat).

(6) Grounding terminal: This grounding terminal is connected to the grounding terminal of the voltage doubler cylinder and the grounding of the test sample at one point, and then connected to the grounding grid.

⑺ Overvoltage setting dial switch: used to set the overvoltage protection value. The overvoltage setting range is within 0.05-1.2 times the rated voltage, and the displayed value of the dial switch is in kV.

⑻ Single and double section selection switch (for double section voltage doubler), voltage full shift (segmented) switch: When the switch is turned to 1, the voltage doubler is a single section, and the voltmeter displays the voltage of the single section voltage doubler; When the switch is turned to 2, the voltage doubler is a double section, and the voltmeter displays the voltage of the double section doubler.

When using a double section pressure cylinder, please align the white mark on the lower flange of the upper section with the white mark on the upper flange of the lower section, and then rotate it clockwise until it touches the foot (about 30 degrees), that is, the electrical connection between the upper and lower sections is in place. Otherwise, it will be removed.

When using a single section, please do not forget to install the additional end cover onto the top of the next section using the above method.

75% VDC-1mA with yellow illuminated button: effective when the red light is on. When the yellow button is pressed, the yellow light will turn on, and the output high voltage will drop to 0.75 times its original value and remain in this state. This function is specifically designed for rapid measurement of zinc oxide lightning arresters with 0.75VDC-1mA. Pressing the green button will turn off both the red and yellow lights, cut off the high voltage, and exit the 0.75 times state.

Green illuminated button: The green light indicates that the power has been connected and the high voltage has been disconnected. When the red light is on, press the green button to turn off the red light and turn on the green light, cutting off the high-voltage circuit.

Red illuminated button, high voltage connection button, high voltage indicator light: When the green light is on, pressing the red button will turn on the red light and off the green light, indicating that the high voltage circuit is connected. At this time, the voltage can be increased. This button is only effective when the voltage regulating potentiometer is reset to zero. If the red button is pressed and the red light is on while the green light is still on, but the button is released and the red light is off and the green light is on, it indicates that the internal protection circuit is working. At this time, the device must be turned off to check if the overvoltage setting dial switch is less than 5% of the full range and if there are any other faults. After confirming that there are no errors, the device can be turned on again.

12. Coarse adjustment voltage adjustment potentiometer: This potentiometer is a multi turn potentiometer that can be roughly adjusted. Clockwise rotation increases the voltage, while counterclockwise rotation decreases the voltage. This potentiometer has the function of controlling electronic zero position protection. Therefore, it is necessary to return to zero before boosting. The voltage regulation accuracy is 0.1% kV. After the test is completed, the potentiometer should return to the zero position.

13. Fine tuning voltage adjustment potentiometer: To adjust accuracy, this potentiometer is fine tuned with multiple turns. Clockwise rotation increases the voltage, which is very slow, and vice versa decreases the voltage. Fine adjustment is generally used to adjust the voltage accuracy and conduct zinc oxide arrester test, and then adjust the current accuracy. After the experiment is completed, the potentiometer should return to the zero position.

Power switch: Press this switch upwards to turn on the power and turn on the green light; Conversely, it is turned off. Avoid using this switch to directly turn off high voltage. When shutting down, first return the voltage coarse and fine adjustment potentiometers to zero, and then turn off the power switch.