The DC high voltage generator is suitable for DC withstand voltage test and electrical equipment for measuring leakage current. It is an indispensable instrument for the electric power industry and scientific research units to conduct insulation testing of cables, arresters, and high voltage electrical equipment. It can also be used for electrostatic technology applications. Experiments and other occasions that require DC high voltage. What are the safe operations when using a DC high voltage generator?
1. Place the DC high-voltage generator control box and high-voltage tower in appropriate locations, and connect the cables, ground wires and power wires respectively according to the test wiring diagram. The protective grounding wire, the working grounding wire and the grounding wire of the discharge pole must be connected separately. Ground wire to the high-voltage tower (ie one point ground).
2. Make sure that the power switch is in the off position and the potentiometer is in the zero position. The overvoltage protection setting is usually 1.1 times the test voltage, and the load characteristic is set to "capacitive".
3. No-load boost of DC high voltage generator. Check whether the overvoltage protection setting is sensitive.
4. Turn on the power switch. At this time, the LED light of the voltage/current meter lights up, indicating that the power is turned on.
5. Press the high voltage start/reset button, the work indicator will light up, indicating that the high voltage has been turned on.
6. Slowly adjust the potentiometer clockwise to boost the output terminal from zero to the desired voltage. Record the reading of the ammeter according to the specified time, and observe whether there is any abnormality or noise in the control box and high voltage output line.
7. After testing the DC high voltage generator, adjust the potentiometer counterclockwise to reduce the voltage. After resetting the potentiometer to zero, press the high voltage start/reset button to turn off the high voltage, the work indicator will go out, and the power switch will turn off.
8. After testing the DC high voltage generator, use a ground rod to completely discharge the test sample end and hang the ground wire. At the same time, add a ground wire to the output end of the high-voltage tower, and then replace the test or remove the wiring.