Types of Insulators in Transmission Lines
Polymer insulators, while lightweight and resilient, may degrade over time under severe UV exposure or chemical attack if not formulated correctly. Polymers, such as silicone rubber, offer a lightweight alternative that is more resistant to vandalism and breakage. Historically, pin insulators were made from porcelain or glass due to these materials’ excellent electrical properties and mechanical strength. This is why utilities often switch to suspension or post insulators for higher voltage applications.
