Polymeric insulator is the one of electrical insulator, which is an important component in the electrical power systems, such as sub-stations and distribution & transmission lines. Polymeric insulator testing is necessary for insulator quality and insulator performance.

Polymeric insulator consists of fiberglass core rod covered by weathersheds of skirts of polymer and metal fittings, the polymer materials have
◆ Silicone rubber
◆ Polytetrafluoroethylene
◆ EPDM (ethylene propylene diene monomer)
◆ Epoxy

These materials shall be inspected to ensure performance and properties suitable used for insulator. Polymeric insulator testing is important for clients and insulator factories.

Polymeric insulator testing includes insulator electrical and mechanical strength test, pollution performance and other tests, such as basic impulse insulation level and withstand voltage.

Polymeric insulator testing is inspected in independent laboratory, such important testing should be done in specifications laboratory.

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