A major problem of electrical insulator usage is the accumulation of airborne pollutants due to natural, industrial or even mixed pollution. Anti-pollution porcelain insulator test is necessary done in the manufacturing process.

Anti-pollution porcelain insulator test

During the dry weather period and their subsequent wetting, anti-pollution porcelain insulators are mainly by high humidity. This problem was the motivation for the installation of a test station to perform laboratory tests on artificially polluted insulators. Orient Power produced porcelain pin insulator should suitable the light pollution areas.

The experiments for anti-pollution porcelain insulator carried out, using either the salt fog method or the solid layer cool fog method, gave numerous experimental data (maximum withstand voltage against pollution, ratio between leakage distance and minimum flashover voltage against pollution, maximum withstand salinity at a given applied voltage, leakage current, etc.) for several insulator types.

The experimental results permitted a highly accurate evaluation of the arc constants of the insulator by means of a mathematical procedure. It has been proved that the computed values of the arc constants are independent of the insulator type and the kind of pollution.

Anti-pollution porcelain insulator test should be done before shipping, such as 11kV porcelain pin type insulators should be chosen sample insulators to do insulator tests.

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