Thermally-cured solvent-borne coatings applied on copper and aluminum rounds.
Short-circuits and partial discharges of electricity cause wiring to fail, often at the worst possible moment. Polyimide, polyamideimide and polyetherimide coatings are applied up to 30 times to build thickness, improve insulation and chemical resistance. The coated wires, also called magnet wires, vary greatly depending on their use. Some may be smaller than the diameter of a single human hair – in electronic components of watches for instance. But in heavy electric motors in wind generators, the diameter of round or flat wires can measure up to several millimeters.