HD 555.20 S1:1990

Specifications for particular types of winding wires - Part 20: Solderable polyurethane enamelled round copper winding wire, class 155 HD 555.20 S1:1990

Scope

This standard relates to solderable enamelled round copper winding wire of class 155 with a sole coating based on polyurethane resin which may be modified (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 should retain the essential chemical identity of the original resin and meet allspecified wire requirements - A sole coating is an insulation made of one material) - Class 155 is a thermal class that requires a minimum temperature index of 155 and a heat shock temperature of at least 175°C - The range of nominal conductor diameters covered by this standard is: Grade 1) 0,018 mm up to and including 0,800 mm - Grade 2) 0,020 mm up to and including 0,800 mm (The nominal conductor diameters are taken from IEC Publication 182-1)