GB/T 6109.5-2025 Enamelled round winding wire—Part 5:Polyesterimide enamelled round copper wire,class 180
GB/T 6109.5-2025 Enamelled round winding wire—Part 5:Polyesterimide enamelled round copper wire,class 180
Basic Information
Scope
This document specifies the requirements for single-layer enamel-coated copper wires based on polyester imide resin. If the chemical properties of the original resin can be preserved and all the requirements of the enamel-coated wire are met, the resin can be modified.
Note: A modified resin is a resin that has undergone chemical changes or contains one or more additives to improve its performance or usage characteristics.
The 180-grade designates the thermal grade, which requires a minimum temperature index of 180 and a thermal shock temperature of at least 200 °C.
The Celsius temperature corresponding to the temperature index is not necessarily the recommended operating temperature of the enamel-coated wire, as this depends on many factors, including the type of equipment used.
The nominal diameter range of the conductors specified in this document is:
—— Grade 1: 0.018 mm and above to 3.150 mm and below;
—— Grade 2: 0.020 mm and above to 5.000 mm and below;
—— Grade 3: 0.250 mm and above to 1.600 mm and below.
The nominal diameter of the conductors shall comply with the provisions of Chapter 4 of GB/T 6109.1—2025.