What Are The Performance Advantages Of Rod-type Suspension Composite Insulators

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Insulator Product Features:

(1) High strength and light weight. The strength-to-weight ratio of composite insulators is very high, that is, the specific strength is very high. Its high mechanical strength comes from the excellent mechanical properties of the FRP core rod. The tensile strength of the FRP pull-out rod, which is currently widely used, can reach more than 1000MPa, while the core rod density is only about 2g/cm3. Therefore, its specific strength is very high, about 5 to 10 times that of high-quality carbon steel. At the same voltage level, the weight of the composite insulator is only 1/7 to 1/10 of that of the porcelain insulator.

(2) 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 composite insulators. Under severe meteorological conditions such as heavy fog, light rain, dew, melting snow, and melting ice, separate water droplets are formed on the surface of the composite insulator instead of a continuous water film. The conductivity of the pollution layer is very low, so the leakage current is also very small, and it is not easy to have a strong local arc, and it is difficult for the local arc to further develop and cause external insulation flashover. After a period of operation, the composite insulator surface is polluted, and the hydrophobicity can migrate to the surface of the pollution layer. This is a unique property 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.
(3) Convenient operation and maintenance. The excellent pollution resistance of organic external insulation improves the reliability of power system operation. In polluted areas, it does not need to be cleaned regularly like porcelain and glass insulators, and there is no problem of zero value detection of ordinary suspension porcelain insulators, which greatly reduces the operation and maintenance costs of insulators in polluted areas.
(4) Not easy to break, preventing accidents. Composite insulators have strong impact resistance, which greatly reduces accidental damage caused during installation and transportation, and can effectively prevent damage caused by human factors such as gunfire.

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