Standard Size Range Round Type Enameled 0.50 mm Aluminum Wire
Standard Size Range Round Type Enameled 0.50 mm Aluminum Wire is sometimes used in large transformers and motors, but due to its low conductivity, the cross-sectional area of aluminum enameled wire must be 1.6 times that of copper wire in order to obtain comparable DC resistance. Magnet wires with a smaller diameter usually have a circular cross-section. Thicker aluminum magnet wires are usually square or rectangular (with rounded corners) to allow more efficient use of the available winding space.
Modern enameled aluminum enameled wires or enameled copper enameled wires usually use one to three layers of polymer film insulating materials, usually with two different compositions, to provide a tough, continuous insulating layer. Magnet wire insulation film uses (in order of increasing temperature range) polyvinyl formal or Formvar (PVF), polyurethane, polyamide (PUW), polyester (PEW), polyester-polyimide (EIW), Polyamide-polyimide (or amide-imide) (AI-EIW) and polyimide (AIW). Polyimide insulated magnet wire can work at temperatures up to 250¡ãC. The insulation of thicker square or enameled aluminum or copper electromagnetic coils is usually enhanced by wrapping with high-temperature polyimide or glass fiber tape, and the complete winding is usually vacuum impregnated with insulating varnish to improve the insulation strength and long-term reliability sex
Other types of insulated conductors, such as glass fiber insulated paint copper/aluminum round and flat wire, nomex insulated copper/aluminum round and flat wire, kraft paper insulated copper/aluminum round and flat wire, mica insulated copper/aluminum round and flat wire, Kapton insulation Copper/aluminum round and rectangular wires, and polyester film insulated copper/aluminum round and rectangular wires are also widely used in various applications around the world, such as motors, transformers and reactors.
