Improving the quality of dual coat amide imide/polyester wire by using the dissipation factor as a bake indicator

Our understanding of the dielectric behavior of layered magnet wire insulations has progressed to the point where meaningful correlations have been established between the dissipation factor and those magnet wire properties that are vital for its performance. This paper discusses how these correlations can be used to tune in a wire enameling machine to produce amideimide overcoated polyester magnet wire with significantly improved reliability.