Composite insulator

The composite insulator is composed of three parts: an insulating core rod, a silicone rubber umbrella cover, and connecting fittings at both ends. Insulating mandrel is the abbreviation of epoxy resin glass avant-garde drawing rod. The main job of the mandrel is to bear mechanical load and has a high tensile strength, generally up to 800~1000Mpa. Its specific strength (in-position strength and weight) The ratio) is 5-6 times that of high-quality carbon structural steel, and the strength cannot be reduced too much under long-term load. At the same time, it is the main part of the internal insulation. Even if the core rod is damp, there is still considerable insulation performance, which can fully satisfy The mechanical and electrical strength requirements of composite insulators, the silicone rubber umbrella cover mainly protects the core rod, shields rain and snow, provides the necessary creepage distance and the external insulation of the product. It is based on high polymer silicone rubber and supplemented by With flame retardants, coupling agents, etc., it has good dielectric properties and chemical resistance, as well as good resistance to bending fatigue, creep resistance and impact resistance. The silicone rubber umbrella cover is mainly used to protect the core rod. The filler is vulcanized at high temperature and high pressure. It has good water repellency and migration, as well as good corrosion resistance, aging resistance, electrical insulation and other properties. It has high pollution flashover voltage and porcelain The pollution flashover voltage of composite insulators with the same creepage distance of insulators is 100-150% higher than that of porcelain insulators. Reach the ICE standard, the highest difficulty level of 6Kv, and has excellent aging resistance.

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