To ensure that the quality of QZ enameled round copper wire is high, manufacturers should use UL-certified wire. The resistance of QZ enameled wire at 20 degrees Celsius must be within the specified values in Table 3. Nominal conductor diameters 0.063 mm and below QZ enameled round copper wire are not suitable for resistance measurement. For enameled wires with nominal conductor diameters of 1.000 mm and greater, resistance measurement should be performed with the use of a tester.
Enamelled round copper wire is a winding wire that is made of copper conductor and insulating layer. This wire is painted in multiple layers and has many applications. These applications include electromotors, transformers, and various electrical tools. Here are the advantages of QZ enameled round copper wire:
IEC 60172 requires heat resistance tests to determine the quality of QZ enameled round copper wire. The temperature index must be at least the value specified in the relevant product standard. Failure time shall not be less than 5000 hours at the lowest test temperature. Further, the relevant product standards define straight weldability, thermal bonding, dielectric loss factor, and transformer oil resistance. If you have any questions, feel free to ask!