The rod-shaped suspension composite insulator is mainly composed of three parts: a silicone rubber shed and a sheath, an epoxy glass fiber drawing rod and a fitting. Among them, the tensile load is the connection surface of the mandrel, the metal fitting and the mandrel and the fitting. At present, the connection method of the mandrel and the metal fitting of the composite suspension insulator produced and operated in China is mainly the wedge type and the inner wedge type.
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