Magnetically Insulated Winding Wire

2024-05-07 14:34:12

Magnetically Insulated Winding Wire

Magnetically insulated winding wire, also known as enameled wire, is used in a wide variety of electrical devices that require the generation of electric and/or magnetic fields to perform electromechanical work. Examples of such equipment include electric motors, generators, transformers, actuator coils, and the like.

Typically, magnetic wires are constructed by applying electrical insulation to a metallic conductor, such as a copper, aluminum, or alloy conductor. The conductor is typically stretched or formed to have a rectangular or circular cross-section. The electrical insulator is typically formed as a coating which provides electrical integrity and prevents short circuits in the magnet wire. Conventional insulators include polymer enamel coatings, polymer tapes, paper insulators, and some combinations thereof.

Conventional magnet wires are made from polymer enamel insulators, coated in successive layers and baked in an oven. In order to obtain higher dielectric and partial discharge properties, it is often necessary to apply more layers, which results in a thicker enamel.

The magnet wire has a thermal rating of at least 220°C according to the American Society for Testing and Materials (“ASTM”) Standard 2307. The magnet wire is also resistant to a variety of oils, liquids, and/or chemicals. The magnet wire can be used as a transmission fluid. In addition, the magnet wire is capable of withstanding significant mechanical forces during the coil formation process.