GB/T 7673.2-2008 Winding Wire in Paper, Part 2: Round Wire in Paper specifies the technical requirements for copper and aluminium-cored round wire in paper for oil-immersed transformers and Miscellaneous electrical windings. This standard applies to conductors with a nominal diameter range of 1.000 to 5.000 mm and is mainly used to regulate the production and quality control of such winding wires. This standard needs to be used in conjunction with GB/T 7673.1 Winding Wire in Paper, Part 1: General Provisions to ensure product conformity and conformity. It is widely used in the manufacture and maintenance of electrical equipment.