IEC 60317-46:2013 specifies the requirements of enamelled round copper winding wire of class 240 with a sole coating of aromatic polyimide resin. The range of nominal conductor diameters covered by this standard is:
- grade 1: 0,020 mm up to and including 2,000 mm;
- grade 2: 0,020 mm up to and including 5,000 mm. The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013. This second edition cancels and replaces the first edition published in 1997. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- deletion of the "in some countries" statement in the scope;
- new subclause containing general notes on winding wire, formerly a part of the scope;
- new subclause containing requirements for appearance;
- revision to the notes in Clause 19, Dielectric dissipation factor;
- new Clause 23, Pin-hole test.Keywords: requirements of enamelled round copper winding wire, class 240, sole coating of aromatic polyimide resin

This publication is to be read in conjunction with IEC 60317-0-1:2013.