Dielectric properties of an improved magnet wire for inverter-fed motors

The ability to predict accurately the long-term pulse endurance performance of wire is essential both to the wire manufacturer and to the motor manufacturer. This paper provides information about the new magnet wire that can help design engineers employ it effectively in their applications. Accelerated pulse endurance test results of this new wire with and without varnishes at different pulse voltage levels, different pulse frequencies, different oven temperatures, and different rise times are presented.