This International Standard specifies requirements of glass-fibre wound impregnated, bare grade 1 or grade 2 enamelled rectangular copper winding wire, temperature index 200. The impregnating agent can be, for instance, polyesterimide or silicon resin based. NOTE - For this type of wire, the heat shock test is inappropriate and therefore a heat shock temperature cannot be established. Consequently, a class based on the requirements for temperature index and heat shock temperature cannot be specified. The enamelled wire shall be based on one of the following standards and shall be agreed between purchaser and supplier. IEC 60317-28:1990, Specifications for particular types of winding wires – Part 28: Polyesterimide enamelled rectangular copper wire, class 180 IEC 60317-29:1990, Specifications for particular types of winding wires – Part 29: Polyester or polyesterimide overcoated with polyamide-imide enamelled rectangular copper wire, class 200 IEC 60317-30:1990, Specifications for particular types of winding wires – Part 30: Polyimide enamelled rectangular copper wire, class 220 When an enamelled wire is used, it must have a minimum class of 180. The temperature index of the glass-fibre wound impregnated wire is dependent upon the type of impregnating agent used. The impregnating agent applied to the glass fibre should have a minimum temperature index of 200. The glass-fibre covering may be: a) a single layer of glass-fibre; b) double layer of glass-fibre, with one layer applied in the direction opposite to that of the other layer. The range of nominal conductor dimensions covered by this standard is: – width: min. 2,0 mm max. 16,0 mm; – thickness: min. 0,80 mm max. 5,60 mm. The specified combinations of width and thickness as well as the specified width/thickness ratio are given in IEC 60317-0-4.