Electrical high voltage insulators

Electrical high voltage insulators is usually used the high voltage overhead transmission and distribution line, it have rapid develop in recent years, Electrical high voltage insulators have many kind materials, glass, porcelain and silicone rubber,today, morden silicone rubber insulator become more and more popular in our daily life.

Porcelain Electrical high voltage insulators:
Porcelian electrical high voltage insulators have many types according to it’s different structures:
◆ Porcelain pin type insulator, it also used on LV and MV line which is a puncture type insulator, used with a spindle rigidly mounted on the crossarm
◆ Suspension type insulator, they also used together connected by steel caps and pin, the connection way is clevis & tongue, ball & socket, typically an insulator string can handle load of up to 120kN.
◆ Porcelain post type insulator, this type insulator is cosist of a solid porcelain cylinder, which used to increase the leakage distance, and a metalware on each end, they usually support the high voltage conductor and mounted on pedestals.
◆ Porcelain long rod insulator, long rod insulator is used as suspension insulator, which similar to post insulator.

Composite electrical high voltage insulator develop very fast in recent years, the main part of compsite electrical high voltage insualtor:
◆ Reinforce fiberglass core, which provide the mechanical strength and resisting the electrical stress.
◆ Silicone rubber sheth and sheds, which providing insulated properties, bonded on the fiberglass core,

The major advantage of composite electrical high voltage insulator si lightweight, it can up to 90% weight reduction when compared to ceramic equivalents, buit it also have other advantages than porcelain/ceramic insulator.

Relative Articles:
Hollow composite insulator,combination unit
Ceramic line post insulator polymer
Transmission line hardware
Silicon insulator advantages

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