Composite Insulator
Small in size and light in weight, about 1/5~1/9 of that of porcelain insulators of the same voltage level, easy to transport and install.
Composite insulators have high mechanical strength, reliable structure, stable performance, and large margin for safe operation, which provide guarantee for line and safe operation.
Composite insulators have superior electrical properties. Silicone rubber sheds have good hydrophobicity and mobility, good pollution resistance, strong anti-pollution flashover ability, and can operate safely in heavily polluted areas.
And no manual cleaning is required, and zero value maintenance can be exempted.
Composite insulators have the characteristics of acid resistance, alkali resistance, heat aging resistance and electrical resistance, good sealing performance, and can ensure that the internal insulation is not damp.
Composite insulators have good brittleness resistance, strong shock resistance, and no brittle fracture accidents.
Composite insulators are interchangeable and can be used interchangeably with insulators such as porcelain.
Composite insulators are composed of three parts: insulating core rod, silicone rod rubber sheath and connecting fittings at both ends.
Insulating mandrel is the abbreviation of epoxy resin fiberglass lead rod, it is the skeleton of composite insulator, it plays multiple functions such as supporting umbrella cover, inner insulation, connecting hardware at both ends, and bearing mechanical load, etc. It has high tensile strength The strength can generally reach more than 600Mpa, which is twice that of ordinary steel and 5-8 times that of porcelain materials, and has good dielectric properties and chemical corrosion resistance, as well as good resistance to bending fatigue, creep resistance and impact resistance sex. The silicone rubber umbrella cover mainly plays the role of protecting the mandrel, blocking rain and snow, increasing the creepage distance and external insulation of the product. It is based on high molecular polymer silicone rubber, supplemented by flame retardants, anti-aging agents, coupling Fillers such as fillers are vulcanized under high temperature and high pressure, and have good hydrophobicity and mobility, as well as good corrosion resistance, aging resistance, electrical insulation and other properties. And it has high pollution flashover voltage and crush resistance, and the voltage distribution is even. Compared with porcelain, its flashover voltage is more than twice that of porcelain under the same conditions.
The composite insulator produced by our company adopts the fittings made of special steel. The end of the fittings adopts the principle of labyrinth design, multi-layer protection, and good sealing performance, which solves the most critical problem of insulators-interface electrical breakdown. The connection between the fittings and the mandrel adopts the most advanced computer-controlled coaxial constant pressure crimping technology in the world, and is equipped with a fully automatic acoustic emission flaw detection system, which ensures the reliability and stability of the connection between the fittings and the mandrel. The mandrel is made of ERC high-temperature acid-resistant rod, and the interface between the mandrel and the silicone rubber is coated with a special coupling agent. The umbrella cover adopts a one-time integral molding process under high temperature and high pressure, and cooperates with the computer-monitored two-stage vulcanization process to prolong the service life of the product. Advanced production equipment and manufacturing technology, complete testing equipment and testing methods ensure that all technical indicators of the products meet relevant domestic and international standards, and become a new generation of insulators for high-voltage power transmission and transformation lines.
