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Polyamide-imide enameled, small-sized rectangular wires (AIW)




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In recent years, the use of rectangular enameled wires has been considered mainly in the automotive components industry to achieve compact, lightweight and high-output products. To respond to the needs, Hitachi Cable introduces high-reliability polyamide-imide enameled, small sized rectangular wires that can be used in hostile winding conditions or severe environments.

  • Excellent flexibility (No cracks occur in the coating film when the wire is bent edgewise with a bending diameter equal to the conductor width).
  • Uniform coating including at the corners provides good dielectric properties.
  • Much higher space factor compare to round enameled wires - theoretical maximum space
    factor: about 78% for round, about 91% for rectangular.

 
Item AIW Existing product Remarks
Film thickness(mm) 0.045×0.045
(0.040)
0.045×0.045
(0.030)
Value in parentheses : minimum film thickness at corners
Flexibility No cracks in coating
Photo
Cracks occur in coating
Phot
When bent edgewise with a bending diameter equal to the conductor width
Adherence(mm) 4.6 9.8 Length of wire portion in which film flakes off the conductor after breaking in tensile test
Breakdown voltage(V) 9,000 5,400 Metallic foil method
Softening temperature(deg.C) 430 430  
 
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