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Application of composite long rod insulator

Origin and construction of composite long rod insulator
In 1920s, the first introduced for porcelain insulator in Germany, the word long rod is actually appeared as an alternative to cap and pin insulator.
The construction of composite long rod insulator is the fibre glass reinforced core, the metal fittings crimped onto the rod core and the silicone rubber housing.

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red high voltage composite long rod insulator                       gray high voltage composite long rod insulator

Length for composite long rod insulator
Composite long rod insulator benefits from the manufacturing possibilities of the fibre reinforced plastic rod, and in particular from the fact that FRP rod can be produced practically endlessly in one piece in lengths of up to 20m which is not possible with conventional insulator materials such as porcelain or glass.
Composite long rod insulator is currently produced in lengths of 100-1000mm for low voltage and medium voltage network system.
The lengths is up to 10m and more for todays UHV network systems

Usage for composite long rod insulator
Composite long rod insulator is primarily used in suspension strings in straight line supports and as tension strings in anchor towers and dead end tower. It can be also used in their jumpers or portals of outdoor substations. In some cases, composite long rods are used in the guys of wooden poles, and more rarely in the guys of steel towers.

Types of towers can be used for composite long rod insulator
Composite long rod insulator has been used for many years at medium voltage level in a wide range of tower types: wooden poles, steel poles or steel towers and concrete towers. And for a large number of applications are straight line support towers, angle towers, dead end towers, tension towers and pole mounted transformer stations.

Composite insulator and in particular their advantages under extreme pollution, has been discovered in the meantime by railway operators and is thus also being used increasingly in railway catenary systems.
 

 

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