This article presents Testing of high voltage post insulators thai 10 kV under conditions with the wheel is tested by staining analysis of leakage current (Leakage current) on the surface of the insulation, porcelain cups, child model under the condition of skin thai post insulators insulators in wet conditions, with ratchet, dip, salt water, IEC standards 62730 test suite.Stimulated by high-voltage alternating current coordinates 18 KB in order to be aware of leakage current on the surface of the insulators insulators found that when accumulated many solvents will cause leakage current voltage input to much it will reduce down until it can cause stress and electric field the way.Onsasom on the surface of the insulators insulators a corona discharge. Resulting in deterioration of the insulation, insulators and cause damage to the system and cause insulation deterioration occur quickly. A shorter lifespan. Frame in the testing laboratory, high voltage Million, Chiang Rai campus of rajamangala University of technology.
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