Pulsed voltage surge resistant magnet wire

A pulsed voltage surge resistant magnet wire comprising:

• a conductor;
• a continuous and concentric and flexible coat of insulation material superimposed on said conductor;
• the insulation material has a shielding particulate filler material dispersed throughout;
• the 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, and having particulates of a size from about 0.005 microns to about 1.0 microns;
• and
• the insulation material is chosen from a group of polymeric materials consisting of polyamide, polyimides, polyvinyl acetals, polyurethanes, polyetherimides, epoxies, acrylics, polyamideimides, polyesters, polyesterimide, polyamide esters, polyesteramideimides, polyimide esters and combinations thereof.

A magnet wire for use in PWM, variable frequency motors, the magnet wire comprising:

• a conductor;
• a continuous and concentric flexible coat of insulation material superimposed on said conductor;
• the insulation material has a shielding particulate filler material dispersed throughout said coat;
• and
• the particulates of said shielding particulate filler material have a size from about 0.005 microns to about 1.0 microns.

A pulsed voltage surge resistance insulation material comprising:

• a shielding particulate filler material dispersed throughout said coat;
• the shielding particulate filler material is chosen from a group of metal oxides consisting of titanium dioxide, alumina, silica, zirconium oxide, zinc oxide, iron oxide and combinations thereof;
• and
• the shielding particulate filler material has particulates of a size from about 0.005 to about 1.0 microns.