Performance comparision of winding wires for high-temperature rotating machines

This paper compares three winding wires commercially available for operating at high-temperatures. These wires are stressed by thermal constraints in the temperature range of 20-500°C. The insulation resistance, the tan δ, the parallel capacity and the behaviour under AC voltage strength are quantified with the temperature. The curvature radius, which becomes crucial for inorganic insulated wires, is examined. The detailed comparison between the three wire types assist the appropriate choice of insulated wires for future high-temperature applications.