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.
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 60317-0-1:2008.