2022-08-17
2020-07-06
Due to the electrostatic adsorption of the DC line, the pollution level of the DC line is higher than that of the AC line under the same conditions. The number of insulators required is also greater than that of the AC line. Its insulation level is mainly determined by the pollution discharge characteristics of the insulator string. Therefore, at present, there are two main methods for selecting the number of insulators:
1. Use the insulator pollution tolerance method according to the artificial pollution test of the insulator, measure the pollution flashover voltage of the insulator under different salt density, and thus determine the number of insulators.
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