Double umbrella glass insulator PSD-70E

PSD-70E is a double umbrella tempered glass insulator designed specifically for medium and high voltage overhead transmission lines, with excellent anti fouling flashover performance and excellent mechanical and electrical characteristics. This model is widely used in operating environments with heavy pollution or high humidity, such as coastal areas, industrial zones, and rainy areas.

This insulator uses high-strength tempered glass as the insulation medium and has the characteristic of "zero self explosion" - when the insulation performance of the insulator decreases due to aging, damage, or internal defects, the glass piece will automatically break, making it easy for operation and maintenance personnel to identify faulty units at a suitable visual speed, effectively improving the safety and maintenance efficiency of the line.

The core design highlight of PSD-70E lies in its trustworthy double umbrella structure. The upper and lower umbrella skirts form a stepped layout, significantly increasing the creepage distance and optimizing the rainwater flushing path, making it difficult for pollutants to adhere and easy for rainwater to carry away. This structure can effectively prevent the formation of conductive pathways in the fouling layer in humid, salt spray, or dust environments, greatly increasing the flashover voltage under wet and fouling conditions, thereby enhancing the operational stability of the line in harsh weather conditions.

The rated mechanical failure load of this product is 70 kilonewtons (kN), suitable for transmission lines with voltage levels of 110 kV and below, commonly used in suspension or tension strings. Its connection method conforms to the universal standard of reputation (usually a 16C ball and socket connection), and can be used in conjunction with various hardware fittings. It is easy to install and has strong compatibility.

In addition, glass insulators themselves do not contain organic materials (based on actual reports), do not age or absorb moisture, have stable long-term performance, and require almost no maintenance. Compared to composite insulators, PSD-70E has advantages in UV resistance, electrical corrosion resistance, and long-term performance, making it particularly suitable for critical transmission channels with high requirements for line life and safety.

Overall, PSD-70E, with its dual umbrella anti fouling design, high mechanical strength, self explosion indication function, and maintenance free characteristics, has become an economical, excellent, and technologically mature insulation solution for power systems in heavily polluted areas.