1. Umbrella tray made of high molecular polymer with silicon rubber as matrix has the advantages of good water repellency, corrosion resistance, aging resistance and so on. It can effectively prevent the occurrence of pollution flashover accidents, reduce manual cleaning, and avoid zero-value maintenance, providing a reliable guarantee for the safe operation of transmission lines.
2. The core rod is made of glass fiber reinforced resin rod and has high tensile strength (>1100Mpa), which is about 1.5 to 2 times that of ordinary steel and 3 to 5 times that of high-strength porcelain. In addition, the mandrel also has good shock absorption, creep resistance and fatigue fracture resistance.
3. The fitting of metal fittings and mandrel adopts non-damage mechanical crimping connection, which is the most advanced connection method in the world today. The advantages are: the connection is safe and reliable, the pressure stress distribution is even, and the integrity of the core rod glass fiber bundle is not damaged, and the excellent characteristics of high tensile strength can be fully utilized.
4. The pressure equalizing ring has improved electric field distribution, reduced corona and radio interference, and protects the umbrella skirt from being burned out during strong arcs. The effect is more remarkable for composite insulators with high voltage levels.
5. The composite insulator has a compact structure, small volume and light weight (1/7～1/10 of the porcelain insulator string of the same level). It has good elasticity and does not need to be cleaned regularly. Therefore, it not only brings great convenience to transportation and installation, but also greatly reduces the amount of maintenance and saves a lot of maintenance costs, reduces the labor intensity of workers, and also provides good conditions for accident maintenance and the implementation of compact lines.