252kV High Voltage Composite Post Insulator

The post insulator plays a crucial role in overhead high-voltage transmission lines. It was initially used on poles in the early years but later became integral to supporting multiple insulators on towers to connect high-voltage lines. Its primary purpose is to increase the creepage distance. Post insulators are typically made from materials such as ceramic, porcelain, or silicone.

Porcelain insulators are typically heavier and more brittle than composite insulators. They have lower mechanical strength and are more prone to breakage under mechanical stress. However, most types are fixed and it is difficult to produce customized versions.
On the other hand, composite insulators are lightweight and offer superior mechanical strength, with customized types readily available.