HIGH VOLTAGE AND HIGH TEMPERATURE WINDING INSULATION FOR ESP MOTOR

摘要

A litz wire includes, in one embodiment, a plurality of twisted strands, wherein one or more of the strands includes a composite magnet wire. The composite magnet wire includes a metal wire having a nanocoating on its outer surface. The nanocoating includes an electrical insulating polyimide matrix and a plurality of alumina nano particles dispersed homegenueoslytherein. The alumina nano particles have a phenyl siloxane surface coating. The litz wire has a temperature index of at least 300°C as obtained in accordance with either ASTM El 641, ASTM El 877, or ASTM D2307. Motors and ESP assemblies utilizing the litz wire are also disclosed.