This part of GB/T 7673 stipulates the requirements for copper core and aluminum core paper-wrapped round wire, which is suitable for oil-immersed transformers and other electrical winding wires. This section should be used together with GB/T 7673.1. The nominal diameter range of the conductor specified in this part is: (1.000~5.000) mm.
GB/T 7673.2-2008 Referenced Document
GB/T 228 Metallic materials--Tensile testing at ambient temperature
GB/T 4074.2 Winding wires.Test methods.Part 2:Determination of dimensions*, 2008-04-23 Update