66kV Electric Polymer Tension Insulator

What is one advantage of a polymer insulator vs. glass insulator?

Polymeric insulators offer several advantages over ceramic and glass insulators, including excellent performance in contaminated environments, lightweight construction, ease of handling, maintenance-free operation, and significantly lower cost.

The Inspection for the Fiberglass Rod

The insulator's core rod is made of high-temperature resistant, corrosion-resistant, or acid-resistant material. The core rods must undergo sampling tests, including water diffusion tests, red-light absorption tests, tensile tests, and corrosion resistance tests, as well as individual visual inspections and electrical tests, before being put into storage. Furthermore, the core rods must undergo physical and chemical treatments before being used in production; otherwise, the bonding between the core rod and silicone rubber will result in rubber damage. During production, random checks of the water diffusion and red-light absorption tests at the core rod-sheath interface are also conducted.