The arrangement of theAC/DC withstand voltage test devicemust ensure sufficient safety distance between people and their surroundings. Try to avoid placing equipment and high-voltage testing lines in personnel walkways as much as possible.
The test site should be fenced and a "Stop! High Voltage Danger" sign should be hung.
Testing high-voltage lines must have supporting or traction insulators. Protective devices should be installed at every interval and at the other end of the cable to prevent people from approaching and passing underneath.
The microampere meter for DC high voltage testing should be at a high potential. In addition to the shielding box, there should also be an automatic overcurrent protection device to prevent the instrument from suddenly breaking down, short circuiting, or burning out during discharge.
Power frequency withstand voltage test, please pay attention to checking whether the equipment capacity is sufficient to avoid resonance.
The working grounding wire (high-voltage tail, grounding wire at the end of the stabilizing capacitor) and the protective grounding wire (operating box shell) should be reliably grounded separately.
If there is irregular oscillation of the power supply during the testing process, it will definitely affect the stability of the high-voltage output. At this time, please temporarily stop welding and other impact power sources or look for other reasons.
The climate (temperature, humidity) requirements for the experimental work shall comply with the requirements of the test regulations, and shielding measures shall be taken if necessary.
During the experiment, if the pointer of the voltmeter swings significantly, the reading of the ammeter increases sharply, or if the test sample emits smoke, flashover, abnormal burning smell, etc., the experiment should be stopped immediately and the power should be turned on. Cut off and investigate the cause.
The high-voltage testing work must strictly comply with the relevant provisions of the safety work regulations issued by the Ministry of Electric Power.
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