1. Stable and reliable mechanical properties.
The end fittings (steel feet, iron caps) of the insulator are all made of disc-shaped suspended porcelain insulators, and the core discs are made of high-strength porcelain. Every process from supporting parts to finished products is made and inspected strictly in accordance with national and industry standards. Thereby, the torque acting on the insulator can be reliably received and transmitted. The test results prove that this structural advantage of porcelain insulators has been fully reflected. At present, the products with six mechanical strength grades with rated mechanical destruction loads of 100KN, 120KN, 160KN, 210KN, 240KN, and 300KN have all passed the type test of "National Insulator Arrester Quality Supervision and Inspection Center".
2. Excellent anti-flashover performance.
Because the silicone rubber composite jacket has good water repellency and water repellency, it improves the power frequency wet flashover voltage and anti-pollution flashover capability. Through the artificial pollution flashover voltage comparison test, the pollution flashover voltage of each porcelain composite insulator is increased by more than 70% compared with the porcelain insulators of the same type. At the same time, the umbrella shape also has good wind and rain self-cleaning ability and pollution accumulation speed. Slow, artificial water washing and cleaning are also extremely convenient, especially in dusty and dirty environment, it is better. The insulator is easy to adjust the outer insulation creep distance, which can meet the requirements of the creepage distance of the insulator string in the heavily polluted area.
3. Strong impact resistance
The surface of the porcelain composite insulator is firmly covered with a silicone rubber composite jacket, which makes it have good impact resistance. At the same time, the porcelain parts are not directly exposed to the air, thereby reducing the frequency of the breakdown or bursting of the porcelain parts due to sudden changes in the ambient temperature difference or lightning strikes, thereby greatly reducing the cost of line maintenance.
Helicopter cleaning insulator Helicopter cleaning insulator
4. Light weight, convenient for transportation, installation and maintenance
The weight of the porcelain composite insulator is 1/3 lighter than that of the porcelain insulator of the same type, thereby reducing the installation labor intensity and iron tower load-bearing pressure. It can withstand bending distance and slow down the impact of periodic impact on the iron tower on the tension string.
5. Unique and reasonable structure
The shape and structure of the porcelain composite insulator. The iron cap adds a concave groove on the basis of the porcelain insulator iron cap, which is convenient for the tool to be clamped when the insulator is installed and replaced. The connection size and structural height of the insulator iron cap and steel foot are exactly the same as the original porcelain insulator, and it has good interchangeability. Especially on the currently running line, the composite insulator can be directly replaced without the need to adjust the original line sag and the like, and the replacement is extremely convenient.