HD 555.25 S1:1990

Specifications for particular types of winding wires - Part 25: Polyester(imide) overcoated with polyamide-imide enamelled round aluminium winding wire, class 200 HD 555.25 S1:1990

Scope

This standard relates to enamelled round aluminium winding wire of class 200 with a dual coating - The underlying coating is based on polyester or polyesterimide resin which may be modified - The superimposed coating is based on polyamide-imide resin (A modified resin is a resin that has undergone a chemical change or contains one or more additives to enhance certain performance or application characteristics - It must retain the essential chemical identity of the original resin and meet all specified wire requirements - Class 200 is a thermal class which requires a minimum temperature index of 200 and a heat shock temperature of at least 220° C - The range of nominal conductor diameters covered by this standard is: Grade 1) 0,400 mm up to and including 3,150 mm - Grade 2) 0,400 mm up to and including 5,000 mm (The nominal conductor diameters are taken from IEC Publication 182-1)