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Discrimination of composite insulator hydrophobicity test results
- Oct 15, 2018 -

Discrimination of composite insulator hydrophobicity test results

The determination of the hydrophobicity test results is not based on one test. It is necessary to combine multiple measurement results to judge; the integrated fouling situation and the aging condition of the umbrella skirt, that is, whether there are characteristics such as electric erosion, hard, brittle, powdering; composite insulator If the salt density of the lower umbrella surface is greater than 0.6mg/cm2, it shall be cleaned immediately, washed or replaced; if the water repellency is seriously reduced or lost, it shall be tracked and monitored; comprehensive judgment shall be made on the basis of measuring pollution, and the natural pollution flashover test shall be carried out. At this time, when the difference of several wet flashover voltages is ≥30%, it is recommended to replace the insulators or clean them and test them for reuse.