This standard is applicable to enamelled round copper winding wire with enamelled single glass filament, referred to as single glass filament enamelled round wire for short. In addition to the requirements of this standard, the enamelled round wire covered with single glass fiber should also meet the requirements of GB7672.1 "Part of General Regulations for Glass Fiber Wound Wire Department".
GB/T 7672.3-1987 history
2008GB/T 7672.22-2008 Glass-fiber wound winding wires.Part 22:Glass-fiber wound resin or varnish impregnated,bare or enamelled round copper wire,temperature index 155