The silicone resin composite insulator is composed of glass fiber epoxy resin rod, silicone rubber umbrella skirt and metal fittings. It can effectively use the narrow corridor to open up the transmission power, and is suitable for the technical transformation of urban power grids. It can reduce the height of the tower and save a lot of manpower, material and financial resources due to its high bending strength.
It is an irreplaceable product that can prevent the cascade fracture of the porcelain cross arm. Small size, light weight, strong impact resistance and impact resistance, no manual cleaning is required, which provides protection for operation. Compared with traditional porcelain insulators and glass insulators, composite insulators have the following advantages: high strength and light weight.
The composite insulator has a high strength-to-weight ratio, that is, a high specific strength. Its high mechanical strength is derived from the mechanical properties of the FRP core rod. The tensile strength of the widely used FRP stretch rod can reach more than 1000MPa, and the core rod density is only 2g/cm3, so its specific strength is very high, 5-10 times higher than that of carbon steel. Under the same voltage level, composite insulators The weight is only 1/7-1/10 of the porcelain insulator.
Wet flashover has a higher flashover voltage. The hydrophobicity of the low-energy surface of the organic composite material is the main reason for the moisture and pollution resistance of the composite insulator. Under severe weather conditions, such as heavy fog, light rain, dew, melting snow and melting ice, the surface of the composite insulator will form separated water droplets instead of a continuous water film. The conductivity of the contaminated layer is very low, so the leakage current is also very small, and it is not easy to cause strong current.
