Polymer insulators, also known as composite insulators, are gaining popularity due to several key advantages over traditional porcelain insulators. The main benefits include:

• Lightweight and Easy to Handle: Polymer insulators are significantly lighter than their porcelain counterparts, which makes transportation and installation easier and more cost-effective.

• Superior Contamination Resistance: The silicone rubber housing on polymer insulators has excellent hydrophobic properties. This means it repels water and prevents the formation of a conductive water film on the surface, which greatly reduces the risk of pollution flashover in harsh or polluted environments.

• High Mechanical Strength and Durability: The fiberglass reinforced polymer core provides exceptional tensile strength and flexibility. They are highly resistant to vandalism, shock, and breakage, which leads to lower maintenance costs and longer service life.

• Safety: Unlike porcelain, polymer insulators are not prone to sudden explosive failure, which enhances safety for line workers and the public.