Insulated winding wire

An insulated winding wire comprising:

• a conductor;
• and
• insulation formed around the conductor, the insulation providing a partial discharge inception voltage greater than approximately 1,300 volts and the insulation capable of a continuous operating temperature of approximately 220° C. without degradation, the insulation comprising:
• at least one layer of enamel formed around the conductor;
• and
• an extruded thermoplastic layer formed around and directly on the enamel with substantially no bonding agent, the extruded thermoplastic layer having a thickness of at least approximately 0.002 inches (51 μm), and the thermoplastic layer comprising at least one of polyetheretherketone (PEEK) or polyaryletherketone (PAEK).

An insulated winding wire comprising:

• a conductor;
• and
• insulation formed around the conductor, the insulation providing a partial discharge inception voltage greater than approximately 1,300 volts, a dielectric strength greater than approximately 10,000 volts, and the insulation capable of a continuous operating temperature of approximately 220° C. without degradation, the insulation comprising:
• at least one layer of enamel formed around an outer periphery of the conductor;
• and
• an extruded thermoplastic layer formed around and directly on the enamel with substantially no bonding agent, the extruded thermoplastic layer having a thickness of at least approximately 0.002 inches (51 μm), and the thermoplastic layer comprising at least one polymer containing a ketone group.