scope:

This International Standard specifies the requirements of enamelled round copper winding wire of class 120 with a sole coating based on polyvinyl acetal resin, which may be modified provided it remains the chemical identity of the original resin and meets all specified wire requirements. Class 120 is a thermal class that requires a minimum temperature index of 120 and a heat shock temperature of at least 155 °C. The range of nominal conductor diameters covered by this standard is: - Grade 1: 0,040 mm up to and incl. 2,500 mm; - Gr.2: 0,040 mm to 5,000 mm; Gr.3:0,040 mm to 5,000 mm.