Incap Insulators
Incap Insulators
Incap Insulators


INCAP is one of the leading manufacturers of Composite Polymer Insulators for TRANSMISSION & DISTRIBUTION LINES ranging from 11kv to 765 kV, meeting the wide ranging demands of Power industry and confirming to international standards & specifications.

We have been active in India insulators market since 1995, and have supplied polymer insulators to esteemed organizations in India and are approved with Power Grid Corporation of India Ltd.(one of the world’s largest transmission utility) and other state boards in India.
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An electrical insulator is a material whose internal electric charges do not flow freely, and therefore make it nearly impossible to conduct an electric current under the influence of an electric field. This contrasts with other materials, semiconductors and conductors, which conduct electric current more easily. The property that distinguishes an insulator is its resistivity; insulators have higher resistivity than semiconductors or conductors.

A perfect insulator does not exist, because even insulators contain small numbers of mobile charges (charge carriers) which can carry current. In addition, all insulators become electrically conductive when a sufficiently large voltage is applied that the electric field tears electrons away from the atoms. This is known as the breakdown voltage of an insulator. Some materials such as glass, paper and Teflon, which have high resistivity, are very good electrical insulators. A much larger class of materials, even though they may have lower bulk resistivity, are still good enough to prevent significant current from flowing at normally used voltages, and thus are employed as insulation for electrical wiring and cables. Examples include rubber-like polymers and most plastics.

Insulators are used in electrical equipment to support and separate electrical conductors without allowing current through themselves. An insulating material used in bulk to wrap electrical cables or other equipment is called insulation. The term insulator is also used more specifically to refer to insulating supports used to attach electric power distribution or transmission lines to utility poles and transmission towers. They support the weight of the suspended wires without allowing the current to flow through the tower to ground.

POLYMER Insulators

Line Insulator

Post Insulator

Pin Insulator

GLASS Insulators

IES Standard


ANSI Standard

Few of our customers