Insulator is a very important component in the electric power systems such as sub-stations
and distribution & transmission lines.
In the early days, insulator
were made of ceramic and glass materials. But in 1963, polymeric insulator were developed and its
improvements in design and manufacturing in the recent years have made them attractive to utilities.
It is consist of a fiberglass core rod covered by weathersheds of skirts of polymer such as silicone
rubber, polytetrafluoroethylene, EPDM (ethylene propylene diene monomer) and equipped with
metal end fittings. It is also called polymer insulator, which means made of at least two insulating
parts – a core and housing equipped with end fittings. Polymeric insulator have many advantages
over the ceramic and glass insulators such as good performance in contaminated environment, light
weight, easy handling, maintenance free, and considerably low cost etc. Because of these properties it
is gaining popularity worldwide and replacing the conventional ceramic and glass insulator.

Dalian Composite Insulator Co., Ltd. with strong researching and developing capability, mainly produces 10-1000kV series polymer insulator. We are a high-tech enterprise which integrates insulator design, production and sales into a whole body. Our products are all according to relative international standard and we have been proved by certification of ISO9001.

Our main products are high voltage polymer insulator, including long rod suspension polymer insulator, pin type polymer insulator, polymer cross arm insulator, polymer post insulator, polymer bushing, and polymer insulator for electric railways. Assembly products include polymer arrester, cut-out and disconnecting switch.

Welcome to our product
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