For the mechanical and electrical installation industry, wire and cable in the electromechanical installation project occupies an important position, as its main raw material of copper, accounting for 70% of the total cost of cable products to 80%, copper prices with the rise in copper prices and rapid growth , The investment side and the construction side in the project cost control has brought great difficulties, for which copper clad aluminum cable research and application of rapid growth.

Features of copper clad aluminum power cable

1. mechanical properties.

Pure copper conductor strength, elongation than copper clad aluminum conductor, that is pure copper in the mechanical properties than aluminum clad aluminum. From the power cable design point of view, pure copper conductor than copper clad aluminum conductor mechanical strength of the advantages of the actual application process does not necessarily need. Copper clad aluminum conductor is much lighter than pure copper, so copper clad aluminum cable in the overall weight lighter than the copper conductor cable, this will give the cable transport and cable construction to bring convenience. In addition, copper clad aluminum is much lighter than pure copper, and the cable produced by copper clad aluminum conductor is better in terms of flexibility than pure copper cable.

2. Electrical performance.

Because the conductivity of aluminum than copper, making copper-clad aluminum conductor DC resistance than the pure copper conductor, which has no effect mainly depends on whether the cable will be used to power, such as to provide power to the amplifier, if it is used to power , Copper clad aluminum conductor will lead to additional power consumption, the voltage drop more.

When the frequency exceeds 5MHz, then the AC resistance attenuation in these two different conductors no significant difference. Of course, this is mainly because of the high-frequency current skin effect, the higher the frequency, the current flow closer to the conductor surface, copper clad aluminum conductor surface actually copper material, when the frequency is high to a certain time, the entire current plating In the copper material inside the flow.

At 5 MHz, the current flows in the thickness of about 0.025 mm near the surface, and the thickness of the copper clad aluminum conductor is about twice as thick as this thickness. For coaxial cable, because the transmission signal is above 5MHz, so copper clad aluminum conductor and pure copper conductor transmission effect is the same.

The attenuation of the actual test cable can prove this. Copper clad aluminum than the pure copper conductor soft, easy in the production process straightening treatment, so to a certain extent, can be said to use copper clad aluminum cable than pure copper conductor cable return loss is good.

3. Economy.

Copper-clad aluminum conductors are sold by weight, and pure copper conductors are also sold by weight, and the price of copper-clad aluminum conductors is much more expensive than pure copper conductors of the same weight. But the same weight of copper clad aluminum than long copper conductor length is much longer, and the cable is calculated by length.

The same weight, copper clad aluminum wire is 2.5 times the length of copper, the price is only a few hundred dollars per ton. Integrated down, copper clad aluminum is very advantageous. As the copper clad aluminum cable is relatively light, the cable transport costs, installation and erection costs will be reduced, will give the construction to bring some convenience.

The above is a brief description of the characteristics of copper clad aluminum power cable, learn more about the contents of power cable, please pay attention to kingsignal official website