TQSB series of high-voltage test transformer Note 1, to do high-pressure test, must be 2 or more than 2 people to participate, and clear division of labor, clear contact between each other. There are special people to monitor the safety of the site and observe the test status of the test sample;
2. The transformer and control box should have reliable grounding;
3. During the test, the boosting speed must not be too fast, and sudden full-voltage power-on or power-off must not be allowed.
4. In the process of step-up or withstanding voltage test, if any of the following abnormalities are found, the pressure shall be immediately depressurized, and the power shall be cut off, the test shall be stopped, and the test shall be conducted after ascertaining the cause. 1 The voltage meter pointer swings a lot; 2 the smell of burning insulation and smoke are found; and there are abnormal sounds in the tested product.
5. During the test, if the sample is short-circuited or breakdown, the overcurrent relay in the control box will work. At this time, the regulator will be returned to zero, and the sample will be taken out after the power is cut off.
6. When performing capacitance test or DC high-pressure leakage test, after the test is completed, lower the voltage regulator to zero and cut off the power. Then, discharge the high-voltage terminal of the test sample or capacitor to the ground with the discharge rod to avoid The potential remaining in the capacitor is at risk of electric shock.
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