33kv Spool Type Porcelain Insulator for Station Post（BS)

Insulators are a special insulation control that can play an important role in overhead transmission lines. In the early years, insulators were mostly used for telegraph poles. Slowly, a lot of disk-shaped insulators were hung on one end of the high-voltage wire connection tower. It was used to increase the creepage distance. It was usually made of glass or ceramics and was called an insulator. Insulators should not fail due to various electromechanical stresses caused by changes in the environment and electrical load conditions, otherwise the insulators will not have a significant effect and will damage the use and operating life of the entire line.

Insulators serve two primary purposes: electrical insulation and mechanical fixation. In order to meet these requirements, a number of electrical and mechanical performance standards are put in place. Provided that lightning and internal voltage are within the specified limits, no breakdown or flashover should occur along the surface. Similarly, there should be no damage or harm under the specified mechanical load, both short- and long-term. Furthermore, the insulators should not display any obvious signs of wear or deterioration after prolonged use under electric load and in different environments. The insulator fittings should also not produce any corona discharge that could interfere with radio or TV reception. Since insulators are widely used, it's important that their fittings are interchangeable. To ensure quality performance, various electrical, mechanical, physical and environmental tests are conducted on insulators according to type and usage conditions.

Summary

1) Material:porcelain

2) Class BS: Pw-11-Y  Pw-22-Y   Pw-33-Y   

3)pin type insualators for high voltage

4)safe usage

5)various desigins available

6)fast shipping and great service

7)good quality and reasonable price