Compared With Traditional Porcelain Insulators And Glass Insulators, Epoxy Resin Insulators Have The Following Advantages:

High wet flashover and pollution flashover voltage. The hydrophobicity of the low-energy surface of organic composite materials is the main reason for the excellent wet pollution resistance of high voltage standoff insulators. Under severe meteorological conditions such as heavy fog, light rain, dew, melting snow, melting ice, etc., separated water droplets are formed on the surface of high voltage epoxy instead of continuous water film, and the conductivity of the pollution layer is very low, so the leakage current is also very small, and it is not easy to have strong local arcs, and it is difficult for local arcs to further develop and cause external insulation flashover. After a period of operation, after the surface of epoxy resin insulator is polluted, the hydrophobicity can migrate to the surface of the pollution layer. This is a unique feature of silicone rubber materials. Under the same pollution degree, its pollution flashover voltage can reach more than twice that of insulators with the same leakage distance.
The equivalent diameter of ordinary rod-shaped suspension high voltage epoxy resin is much smaller than that of ordinary suspension porcelain insulators and post insulators, which is also an important reason for the excellent pollution resistance of high voltage standoff. Under adverse conditions, hydrophobicity may decrease or be lost due to the influence of electrical and environmental stresses, but its equivalent diameter will not become thicker, so the pollution flashover voltage will remain at a high level.