Polyester (Amide)(Imide) Overcoated with Polyamideimide Film-Insulated Rectangular Copper Magnet Wire Thermal Class 220. The polyamide-imide overcoat provides superior mechanical durability, including scratch and abrasion resistance.
Table 1 Specifications
| Insulation materials | Film – lnsulation Types Polyester Overcoated with Polyamideimide; Polyester (lmide) Overcoated with Polyamideimide; Polyester (Amide) Overcoated with Polyamideimide |
| Thermal Class | 220 |
| Dimensions | Bare Wire: Thickness 1.016mm-7.341mm；Width 2.057mm-16.535mm Heavy: Thickness 0.076mm-0.127mm; Width 0.064mm-0.114mm Quad: Thickness 0.127mm-0.178mm; Width 0.102mm-0.152mm |
| Certificate | MW 38-C |
| Insulation thickness | Heavy and Quad |
Table 2 Periodic conformance tests
| Thermoplastic flow | Median not less than 325ºC when tested as MW 37-C Heavy Build |
| Solubility | Specimens immersed in xylene and 50/50 xylene/butyl Cellosolve shall not soften sufficiently to expose the bare conductor |
| Dielectric breakdown rated temperature | Average not less than 75% of the value required at room temperature, when tested on MW 35-C Heavy build |
Table 3 Properties
| Adherence and flexibility | No cracks visible in the film coating |
| Elongation | Bare or Film- Insulated MW Specification 18, 20, 36, 38, 64, 84 |
| Heat shock | No cracks visible in the film coating after 15% elongation followed by conditioning at 240ºC |
| Springback | Not greater than 5º |
| Dielectric breakdown | Not less than the value in Heavy (500-1500) / Quad (900-2500) Applicable to Heavy film-insulated sizes having a thickness of less than 0.049 in. (1.25 mm) or a width greater than 0.492 in. (12.5 mm), or a width-to- thickness ratio greater than 5:1, and all Quad. Other Heavy film-insulated sizes shall be tested in accordance with Foil Electrode Method Heavy film-insulated sizes having a thickness 0.049 in. (1.25 mm) or greater; a width of 0.492 in. (12.5 mm) or less; and a width-to-thickness ratio not more than 5:1 shall have a dielectric breakdown voltage not less than in the table above after bending |