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Troubleshooting of DC high voltage generator

time:2021/4/1   source:华天电力  reading:449 time

DC high-voltage generators are widely used in the power testing industry. In order to facilitate the use of DC high-voltage generators, this article summarizes the faults and troubleshooting methods that may be encountered in the use of DC high-voltage generators.


1. When the power switch is turned on, the digital display on the control box has no display


Check the power connection and all fuses. If the fuses are damaged, please replace them with new ones as required.


2. If the power switch is turned on, the digital display is on, the high voltage indicator (green) is off, and high voltage cannot be applied.


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1. The fault display "return to zero" light is on


If there is no zero return, please turn the high-voltage output adjustment knob and fine-tuning knob counterclockwise to return to the zero position until the "return to zero" light is off, and then high voltage can be applied.


2. There are two phenomena when the fault display "other" light is on: ①grounding protection; ②disconnection protection


a. The grounding wire may not be connected well, or the grounding wire may not be reliably grounded. Please connect a reliable ground wire, turn off the power and restart it.


b. It may be that the cable connecting the control box and the high-voltage tower is not connected properly. After reconnecting the cable, please turn off the power and restart.


c. This fault may occur when the welding heads at both ends of the cable are disconnected. Please weld the welding heads at both ends of the cable, turn off the power supply, and restart.


d. It is possible that a wire in the control box is disconnected and disconnected. Please re-solder, turn off the power and restart.


3. Everything is normal, but it is protected in the process of not rising to the rated output voltage


1. The fault display "overcurrent" light is on


①The sample is short-circuited, or the leakage current is too large.


②When the load is large, the boost is too fast. Turn off the power, restart, and slow down the boost speed.


2. The fault display "overvoltage" light is on


The overvoltage protection setting knob is not in place, please turn it clockwise, turn off the power and restart it.


4. When the test product is short-circuited under high voltage, due to the large short-circuit current, it is possible to light up all the fault indicators.

This is normal. Please restart after troubleshooting the test product.


5. After the fault of the test product is eliminated, the fault indicator is still on, and the high voltage cannot be applied.


The power switch is also a fault protection reset switch. Please turn off the power switch and restart to boost the voltage.


6. If it is found that the voltmeter number fluctuates greatly

Please check whether the 7-pin shielding net head and the center shielding wire end of the connecting cable are disconnected. If they are disconnected, please weld them.

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