This part of IEC 60317 specifies the requirements of solderable enamelled round copper 
winding wire of class 130 with a dual coating. The underlying coating is based on 
polyurethane resin, which may be modified providing it retains the chemical identity of the 
original resin and meets all specified wire requirements. The superimposed coating is a 
bonding layer based on a thermoplastic resin. 
NOTE 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. 
The range of nominal conductor diameters covered by this standard is: 
– Grade 1B: 0,020 mm up to and including 2,000 mm; 
– Grade 2B: 0,020 mm up to and including 2,000 mm. 
The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013.dition 5.0 2019-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Specifications for particular types of winding wires – Part 2: Solderable polyurethane enamelled round copper wire, class 130, with a bonding layer Spécifications pour types particuliers de fils de bobinage – Partie 2: Fil brasable de section circulaire en cuivre émaillé avec polyuréthane, classe 130, avec une couche adhérente IEC 60317-2:2019-08(en-fr) THIS PUBLICATI