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Polyimide insulated copper magnet wire
We are a professional manufacturer and seller of polyimide insulated magnet wire manufacturers. We insist on high quality and reasonable price, and provide perfect after-sales service. The polyimide insulated copper wire produced is mainly used for transformers, inductors and motors.

The enameled copper magnet wire itself is most often fully annealed, electrolytically refined copper. Enameled aluminum magnet wire is sometimes used for large transformers and motors. However, because of its lower electrical conductivity, an aluminum wire must have 1.6 times the cross sectional area as a copper wire to achieve comparable DC resistance. Smaller diameter polyimide insulated magnet wire usually has a round cross section. Thicker polyimide insulated magnet wire is often square or rectangular to permit more efficient use of available winding space. Older insulation materials consisted of cotton, paper or silk and were useful for lower temperature applications (up to 105°C). Modern polyimide insulated magnet wire typically uses one to three layers of polymer film insulation, often of two different compositions, to provide a tough, continious insulating layer.

polyimide insulated copper wire

Enameled magnet wire use polyurethane, polyamide, polyester, polyeseter-polyimide, polyamide-polyimide (or amide-imide), and polyimide. Polyimide insulated magnet wire is capable of operation at up to 250°C. The insulation of thicer square or rectangular enameled copper wire is often augmented by wrapping it with a high-temperature polyimide or fiberglass tape, and completed windings are often vacuum impregnated with an insulating varnish to improve insulation strength and long-term reliability of the winding.

Polyimide insulated magnet wire mainly use to different kinds of Motors, electronic compoment ,instrument windings , step motors ,  transformers, communication equipment,etc.