Composite insulator products are used for insulating and hanging conductors in high-voltage and ultra-high voltage AC and DC transmission lines. In the early years, insulators were mostly used for telephone poles (low voltage). They were slowly developed at the end of high-type high-voltage wire connection towers. A lot of disk-shaped or column-shaped insulators were hung. It was designed to increase the creepage distance. When it is made, it is called an insulator.
The composite insulator product is composed of three parts: glass fiber epoxy resin pull rod, silicon rubber umbrella skirt and fittings. The silicon rubber umbrella skirt adopts the overall pressure injection process, thereby solving the key problem affecting the reliability of the composite insulator. The interface electrical breakdown. The connection between the glass drawing rod and the fittings adopts the most advanced crimping process, equipped with an automatic sonic flaw detection system, which has high strength, beautiful appearance, small size and light weight. The fittings are galvanized to prevent corrosion and can interact with porcelain insulators Changed to use, this product has a reliable structure, does not damage the mandrel, and can fully exert its mechanical strength.
Excellent electrical performance, high mechanical strength, the tensile strength of the epoxy glass pull rod inside is 2 times higher than that of ordinary steel, and 8-10 times that of high-strength ceramic materials, which effectively improves the reliability of safe operation.
Good anti-pollution performance, good anti-pollution performance, strong anti-pollution flashover strength, its wet withstand voltage and pollution withstand voltage are 2~2.5 times of the same creepage porcelain insulator. And it does not need to be cleaned, and can be safely operated in heavy pollution.
Small size and light weight (only 1/6~1/9 of the porcelain insulator of the same voltage level). Lightweight structure, easy to transport and install.
Silicone rubber skirt has good water-repellent performance, its overall structure ensures that the inner insulation is not damp, no need for preventive insulation monitoring test, no cleaning, reducing the daily maintenance workload.
Good sealing performance, strong resistance to electric corrosion, umbrella skirt material has resistance to tracking of TMA4.5 level, has good aging resistance, corrosion resistance, low temperature resistance, can be applied to -40 ℃ ~ -50 ℃ area.
It has strong impact resistance and shock resistance. It has good anti-brittleness and creep resistance. It is not easy to break, bend, and torsion strength, can withstand internal pressure, strong explosion-proof force, and can be interchanged with porcelain and glass insulators. effect.
Composite insulator series products are superior to porcelain insulators in mechanical and electrical properties, and have a large operating safety margin. They are newer products for power lines.