What are the common faults of composite insulators

The common defects of composite insulators include flashover and pollution flashover, which may constitute power operation accidents. It is also positive to stop using insulator hydrophobic liquid tester to test composite insulators regularly. Then, what are the reasons for the flashover defects of composite insulators?

Production and quality are different: the quality of composite insulators produced by manufacturers is different. In rainy season, moisture absorption will reduce the insulation performance of insulators, which may lead to thermal flashover, breakdown or contraction explosion of insulators, causing explosion and affecting the safety of power operation. Improper construction will damage the insulator: during transportation, installation and construction, the insulator will be cracked, damaged or unglazed due to external force.

The electric arc will be generated in rainy days, which shortens the defect of breakdown; Insulator aging: due to the influence of long-term mechanical and electrical load and external environmental changes, the insulation performance of the insulator decreases and the product loses its insulation performance; Flashover and burnout: reduce insulation performance, and long-term lightning overvoltage will occur after operation: insulator flashover and burnout; Pollution flashover: insulator surface is polluted to a certain extent, resulting in insulator flashover or surface discharge.

Insulation inspection and in-service inspection are key items from time to time in the category of power inspection. Its safe operation is related to the electrical safety of the whole production line. The power company has also developed detailed inspection procedures to regularly stop sweating. Insulation, salt density, ash density, etc., stop the test.

The above are the common faults of composite insulators. If you have other problems, please contact us!