Copper clad aluminum wiring

 News     |      2020-03-30 17:43
Copper clad aluminum wiring refers to a wire with an aluminum core as the main body and a certain percentage of copper plating on the outside. It can be used as a conductor for coaxial cables and as a wire and cable conductor in electrical equipment. The aluminum wire has a small specific gravity, but its welding performance is not good. Therefore, the copper wire is coated on the aluminum wire. This copper clad aluminum wiring can take advantage of the small aluminum specific gravity and improve the welding performance. Applicable to the electric power and electrical appliances industries.
 
Because the main function of copper clad aluminum wiring is to transmit signals, the current flowing through it is very small. However, since the conductivity of aluminum is only 2/3 of that of copper, national standards stipulate that all wires and cables used for transmitting electrical energy must use uncoated or metallised annealed copper wires as conductors. It is prohibited to use aluminum wires (including copper-clad aluminum). Wire) as a conductor.
 
Copper clad aluminum wiring according to the copper layer volume ratio (10%, 15%, 20%) and soft and hard states (soft state A, hard state H) of different categories
 
Type Explain Rate
10A Soft copper-clad aluminum wire with a copper layer volume ratio of 10% 10%
10H Hard copper-clad aluminum wire with a copper layer volume ratio of 10% 10%
15A Soft copper-clad aluminum wire with a copper layer volume ratio of 15% 15%
15H Hard copper-clad aluminum wire with a copper layer volume ratio of 15% 15%
20A Soft copper-clad aluminum wire with a copper layer volume ratio of 20% 20%
20H Hard copper-clad aluminum wire with a copper layer volume ratio of 20% 20%
Materials and manufacturing
The copper clad aluminum wiring should be composed of an aluminum core and a continuous outer copper layer. The copper layer should be fully combined with the core wire. The quality of copper clad aluminum wire shall meet the requirements of this standard.
 
Product quality appearance

Copper clad aluminum wire should be free of dents, cracks, exposed aluminum, or other defects that are inconsistent with good industrial practice.
For copper-clad aluminum wires with a diameter of 0.0720 inches (1.829mm) and above, the surface finish inspection shall be performed with the naked eye (normal glasses are also possible). For copper clad aluminum wires with a diameter of less than 0.0720 inches, the surface finish inspection shall be carried out without magnification of more than 10 times.