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Benefits And Limitations Of Porcelain And Composite Insulators

By Author: Singree
Total Articles: 17

Electrical insulators are used for preventing unwanted flow of current to the earth from its supporting points. An electronic insulator must be able to prevent flow of current as well as possess a high mechanical strength. Insulators are usually available in several sizes and specifications, as per the variegated requirements of the clients. Most of the manufacturers also offer insulators in various customized options. With the advancement of technology, insulators have been evolved over the years. There has been a construction of a wide variety of design in the construction of porcelain insulators.

Porcelain insulator

Porcelain insulators are made up of ceramic materials and sometimes also referred as a ceramic insulator. These insulators are preferable where installation altitude is less than one thousand meters. They don’t expand greatly when heated.

Benefits & features:

· Porcelain insulator is more hydrophobic than glass insulators so that they take less impact of chemically aggressive elements from the outer environment.

· These insulators are also capable of enduring high amount of temperature and current. It is highly advisable to never use a hard metalized brush for cleaning the surface of porcelain insulators as protective glaze can be damaged.

· These insulators are capable of handling any size fence wire including high tensile wire, poly wire, and poly rope.

Composite insulator

Composite insulator protects transmission equipment from high pollution levels and sabotage risks. Nowadays, these insulators are used for almost all power levels. Due to a substantial advantage of composite insulators over traditional insulators, these are widely used in electronic utilities globally and showcase superior performance under the contaminated condition.


· These insulators are lightweight and compact, thus they can easily fit into small cranes and are also easy to install and maintain in the long run.

· As composite insulators are hydrophobic in nature, they prevent water from being collected on the surface of the insulator and prevent surface currents.

· These insulators have high mechanical strength, so they can easily cover larger areas without affecting the overall productivity.

· One of the greatest advantages of a composite insulator is being pollution resistant and environmentally friendly insulator. They keep dirt and dust away, so there are no internal or external damages.


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