This section of IEC 60317 outlines the specifications for enamelled round copper winding wire classified as Class 1 80, which features a dual coating system. The primary coating is made from polyesterimide resin, which can be modified as long as it maintains the chemical identity of the original resin and complies with all the specified requirements for the wire. The external coating serves as a bonding layer and is based on a thermoplastic resin.
NOTE: A modified resin is defined as a resin that has undergone a chemical alteration or contains one or more additives to improve specific performance or application characteristics.
This section addresses a range of nominal conductor diameters, including:
- Grade 1B: from 0.020 mm to a maximum of 1,600 mm;
- Grade 2B: from 0.020 mm to a maximum of 1,600 mm.
The nominal conductor diameters are detailed in Clause 4 of IEC 60317-0-1:2013.
