Importance

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Abstract

A method for forming magnet wire with improved partial discharge performance may include providing a conductor, forming a first layer of polymeric enamel insulation formed around the conductor, and forming a second semi-conductive layer around the first layer. Forming the second layer may include providing a base polyamic acid and complexing filler particles with the base polyamic acid. The polyamic acid may be applied around the first layer, and the filler particles may migrate towards an outer surface of the second layer. The polyamic acid may be cured to form a semi-conductive enamel layer, and at least sixty percent by weight of the filler particles may be positioned within an outer half of the second layer following the migration.

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First Claim