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Armoured Polyesterimide (API) 200°C Enamelled Copper Conductor

Armoured Polyesterimide (API) 200°C Enamelled Copper Conductor

Enamel Type

  • Base coat polyesterimide
  • Top coat polyamide-imide

Insulation Class

  • 200° C

Diameters 0,2 – 500mm

Covering grade 1, 2 or 3

Standard IEC 317 – 13 / 1990


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Armoured Polyesterimide (API) 200°C Enamelled Copper Conductor


API magnet wire is based on polyesteramide enamel with an amide-imide topcoat designed for excellent high temperature performance. It exhibits all of the basic properties required for winding and performance plus added thermal characteristics rendering it suitable for continuous service at 200°C and intermittent cycling up to 220°C.


  • High thermal stability
  • Good windability
  • Excellent heat shock resistance
  • High thermoplastic flow temperatures
  • Good overload resistance
  • Extremely high dielectric strength, even when exposed to moisture

Typical Applications

  • Automotive alternators
  • Distribution and power transformers – oil-filled and dry-type
  • Open (fractional and smaller) motors
  • Hermetically and totally enclosed motors
  • Integral motors
  • Start windings
  • Generators
  • Solenoid, and brake coils