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History of composite insulator

In the 1960s an insulator having porcelain sheds supported by an epoxy resin fiberglass rod was developed. It was not widely used because of developments in lighter weight composite insulating materials.

Outdoor composite insulator for transmission lines were developed as early as 1964 in Germany, and by other manufacturers in England, France, Italy, and the U.S. In Germany, units for field testing were provided in 1967. In the late 1960s and early 1970s, manufacturers introduced the first generation of commercial transmission line composite insulator.

composite line post insulator-Orient Power            composite long rod insulator-Orient Power
composite line post insulator                                                   composite long rod insulator

The composite insulator was widely used from the 1980's and the usage increased rapidly in the 1990's. In 1980, Furukawa Electric was engaged in the development of inter-phase spacers to prevent galloping in power transmission lines, and at that time developed composite insulator that had the required light weight and flexibility.

In 1991 the first composite insulators having a SIR housing were used as inter-phase spacers for 66 kV duty, and in 1994 their use was extended to 275 kV service with a unit 7 m in length. Excellent contamination and wetting performance, high ratios of strength to weight, vandalism resistance, easy transport and installation and obvious cost advantages over conventional ceramic insulators, especially in extra HV and ultra HV lines, are great attractions for utilities.


About Us - Composite insulator manufacturer
More than 30 years experience in power industry since 1978 as a composite insulator manufacturer in China, advanced manufacturing process, strict quality control test system, ISO certificated, excellent communication, considerate services, enable us to be a leading composite insulator manufacturer of composite insulator and polymer insulator.
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