Composite insulator is composed of three parts: insulating core rod, silicon rod rubber umbrella sleeve and connecting hardware at both ends.

Insulating core rod is the abbreviation of epoxy glass fiber pull rod. It is the skeleton of composite insulator. It supports the umbrella cover, internal insulation, connecting the fittings at both ends, and bears the mechanical load. It has high tensile strength, generally up to more than 600MPa, 2 times of ordinary steel, 5-8 times of porcelain, and has good dielectric properties and chemical resistance, It also has good bending fatigue resistance, creep resistance and impact resistance. The silicone rubber umbrella covers mainly protect the mandrel, cover the rain and snow, increase the creepage distance and the external insulation of products. It is made of high molecular polymer silicone rubber as the base, supplemented with flame retardant, anti-aging agent, coupling agent and other fillers, which is sulfurized by high temperature and high pressure. It has good hydrophobicity and mobility, and good corrosion resistance, aging resistance, electrical insulation and other properties. Moreover, it has high pollution flashover voltage and crushing resistance, and the voltage distribution is even. Compared with porcelain, its flashover voltage is more than 2 times of that of porcelain under the same conditions.

The composite insulator produced by the company adopts the hardware made of special steel, and the end of the hardware adopts the labyrinth design principle, with multi-layer protection and good sealing performance, which solves the most critical problem of insulator - interface electrical breakdown. The connection between the hardware and the mandrel adopts the most advanced computer-controlled coaxial constant pressure welding technology in the world, and is equipped with a full-automatic acoustic emission testing system, which ensures the reliability and stability of the connection between the hardware and the mandrel. ERC high temperature acid resistant rod is used as the core rod, and special coupling agent is coated on the interface between the core rod and silicone rubber. The umbrella cover adopts the one-off integral forming process under high temperature and high pressure, and the two-stage vulcanization process monitored by computer, which prolongs the service life of the product. Advanced production equipment and manufacturing process, complete detection equipment and detection means ensure that all technical indicators of the product meet the relevant domestic and international standards, and become a new generation of insulator for high-voltage transmission and transformation lines.

Composite insulator product type
FXBW -- rod type suspension composite insulator
FpQ -- composite pin insulator
Fzsw -- composite post insulator
FS -- composite cross arm insulator
Fcgw -- composite dry wall bushing
FQE (x) --- composite insulator for electrified railway
Fqj -- roof composite insulator for electrified track

Service conditions
Ambient temperature - 40 ℃ ~ + 40 ℃
Altitude not more than 1500 meters
AC power frequency shall not exceed 100Hz
Maximum wind speed does not exceed 35m / S
The earthquake intensity shall not exceed magnitude 8

Product performance characteristics
It is small in size and light in weight, about 1 / 5 ~ 1 / 9 of porcelain insulator of the same voltage level, which is convenient for transportation and installation.
Composite insulator has the advantages of high strength, reliable structure, stable performance and large margin of safe operation, which guarantees the safe operation of the line.
The electrical performance of composite insulator is superior. The silicone rubber umbrella has good hydrophobicity and mobility, good pollution resistance and strong anti pollution flashover ability. It can operate safely in heavily polluted areas without manual cleaning and zero value maintenance.
The composite insulator has the characteristics of acid resistance, alkali resistance, heat aging resistance, electrical resistance, good sealing performance, and can ensure that its internal insulation is not affected by moisture.
The composite insulator has good embrittlement resistance, strong shock resistance and no brittle fracture accident.
The composite insulator is interchangeable and can be used interchangeably with porcelain and other insulators.