High voltage test transformerWhat should be noted during the operation process? There will definitely be many problems during the operation of high-voltage testing equipment! So what are the precautions we should pay attention to? Wuhan Hengwei Guodian Power Equipment Co., Ltd. has summarized the following points, hoping to be helpful to high-voltage power equipment manufacturers!

　　

(1) Test personnel should divide responsibilities, set a safe distance at the test site, carefully inspect the grounding of the test sample and test transformer, and assign a dedicated person to monitor safety and observe the status of the test sample.

　　

(2) Before conducting the experiment on the test sample, all external connections should be removed and fully discharged. The main parts should be cleaned and kept dry to avoid damaging the test sample and causing errors in the test values.

　　

(3) For large capacity test samples (capacitors, ultra long cables, etc.), the voltage should be slowly increased to prevent the microampere meter from being burned out due to excessive charging current of the test sample. If necessary, the microampere meter should be read for stable readings at different voltages by gradually increasing the voltage.

　　

(4) During the experiment, the test object, microampere meter, and testing device should be closely monitored. In case of flickering, breakdown, or other phenomena, the voltage should be immediately reduced, the power should be cut off, and the cause should be identified.

　　

　High voltage test transformerPrecautions for operation process

　　

1. Test personnel should divide responsibilities, set a safe distance at the test site, carefully inspect the grounding of the test sample and test transformer, and assign a dedicated person to monitor safety and observe the status of the test sample.

　　

2. The main parts of the test sample should be cleaned and kept dry to avoid damaging the sample and causing errors in the test values.

　　

3. For the testing of large equipment, it is generally necessary to conduct a no-load test on the test transformer, that is, to increase the voltage to the test voltage without connecting the test sample, in order to calibrate the accuracy of the instrument indication and adjust the ball spacing of the discharge ball gap.

　　

4. When conducting a voltage withstand test, the boosting speed should not be too fast, and sudden pressure should be prevented. For example, if the regulator is not at zero position, it should be suddenly closed, and the power should not be suddenly cut off. Generally, it should be closed when the regulator drops to zero position.

　　

5. During the boost or withstand voltage test, if the following abnormal situations are found: the voltage and current meter pointers swing greatly; The test sample makes abnormal noises; If insulation is found to be burnt or smoking, the voltage should be immediately reduced, the power should be cut off, the test should be stopped, and the cause should be identified.