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Partial discharge detection test operation

time:2020/10/2   source:华天电力  reading:266 time

Note on partial discharge detection test operation:


1. The operation and maintenance of the partial discharge tester should be carried out by competent professionals.


2. The test site voltage of the partial discharge tester is as high as tens of thousands of volts. The test personnel should strictly observe all safety precautions. The test area should have obvious and clear warning signs. Everyone on the site should know the high voltage area. Understand all live components and high-voltage components in the measurement circuit. Personnel who are not directly involved in the measurement should be isolated outside the test area. During the test and after power-on, no one should enter the high-voltage area.


Partial Discharge Detector.png


3. Before the test, the operator should master the test circuit, test method, test procedure and test purpose.


4. The test site should be tidy and clean. No other irrelevant items should be stored. There should be no messy metal pieces on the ground in the high-voltage range. The tested product, step-up transformer, coupling capacitor, etc. should be kept at a proper distance from the surroundings.


5. The surface of the tested product, step-up transformer, coupling capacitor, etc. should be kept dry and clean. Because the moisture and dirt on the surface will cause partial discharge on the surface, resulting in abnormal measurement.


6. The test operator connects the line according to the regulations. Various metal objects in the test area should be firmly grounded. Check and improve all possible discharge locations in the test area. Pay special attention to whether various ground wires are well grounded.


7. Before the test begins to pressurize. The test personnel must check the wiring in detail and comprehensively to avoid wrong wiring. Particular attention should be paid to whether the wiring of the grounding wire, high-voltage wire and strong current loop is firmly connected.


8. When the test is abnormal, the power supply should be cut off before further processing.


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