They are used in 170 kV and 420 kV steps at high voltage energy transmission line.
In areas with the desert, the sea and over the level of industrial pollution;
- Providing better isolation because of the property of high hydrophobic
- Types of composite insulator is impenetrable
- Easy-installation
- Lighter compared to ceramic insulator and glass insulator, not require more maintenance, easy transportation
It is preferred due to the advantages such as above.