Patent ID: 6180888
Filing Date: 2001-01-30
Classification: H01B,H02K,Y10T

Abstract:
A pulsed voltage surge resistant magnet wire comprising a conductor and a continuous and concentric and uniform and flexible coat of insulation material superimposed on said conductor, said insulation material being an insulative polymeric material and having an effective amount of shielding particulate filler material dispersed throughout said coat to increase the pulsed voltage surge resistance of said insulation material by at least ten-fold in comparison testing at 20 kHz, 0.7 to 1 kV per mill, 50% duty cycle, from about 30.degree. to 130.degree. C. and a rate of rise of about 83 kV per microsecond, said shielding particulate filler material being chosen from a group of metal oxides consisting of titanium dioxide, alumina, silica, zirconium oxide, zinc oxide, iron oxide and combinations thereof, said shielding particulate filler material having particulates of a size from about 0.005 microns to about 1.0 microns.