Dynamic Coefficient of Friction-a measure of lubricity

As magnet wire is transferred from package to coil, the designed path takes the wire over, around and through guides, blocks, etc,-all intended to help place the wire at a precise location on the coil. The friction encountered during this transfer is relative to the surface of the film insulation. Although several tests have been used in an attempt to characterize the surface of film insulated magnet wire, none were found to be satisfactory.