Partial discharge refers to electrical breakdown under sharp voltage gradients in insulation systems, usually manifesting as non-sustained, pulse-like discharges.

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1. Working principle: The partial discharge tester detects the partial discharge signal in the equipment or material to determine whether its insulation status is normal. It uses high-frequency sensors or probes to convert partial discharge signals occurring in equipment or materials into measurable electrical signals.

2. Application fields: Partial discharge testers are widely used in insulation status detection and fault diagnosis of various electrical equipment such as power systems, insulation materials, transformers, generators, and switchgear.

3. Measurement parameters: The partial discharge tester can measure and record the discharge amount, discharge duration, discharge frequency and other parameters of partial discharge. These parameters can be used to evaluate the insulation status of equipment or materials and determine whether there is an insulation fault.

4. Fault diagnosis: By analyzing the data collected by the partial discharge tester, insulation faults in equipment or materials can be identified and located. This helps to detect potential failure points in advance and take appropriate repair or replacement measures.

5. Standards and specifications: The use of partial discharge testers usually follows relevant international standards and specifications, such as the IEC 60270 standard of the International Electrotechnical Commission (IEC).

6. Maintenance and maintenance: In order to ensure the accuracy and reliability of the partial discharge tester, it needs to be calibrated and maintained regularly. In addition, correct operation and maintenance of test instruments are also key to ensuring the accuracy of test results.

7. Safety precautions: When using the partial discharge tester, electrical safety regulations should be followed and attention should be paid to preventing electric shock or other safety risks. At the same time, you need to understand and comply with the instructions for use and related operating guidelines of the test equipment.