ECCA Wire refers to a wire with aluminum core wire instead of copper as the main body of the wire and a certain proportion of copper layer on the outside. ECCA wires can be basically divided into two types according to their applications: one is copper clad aluminum wires for signal or communication purposes, and the other is copper clad aluminum wires for power supply. In terms of its characteristics, copper clad aluminum and pure copper wires are compared as follows.
Mechanical properties. Pure copper wire has higher strength and elongation than copper clad aluminum wire, which means pure copper is better than copper clad aluminum in mechanical properties. From the point of view of wire design, pure copper wire has better mechanical strength than copper clad aluminum wire, which is not necessarily required in practical application. Copper clad aluminum wires are much lighter than pure copper, so the overall weight of copper clad aluminum wires is lighter than pure copper wires, which will bring convenience to the transportation and erection of wires. In addition, copper clad aluminum is softer than pure copper, and wires made from copper clad aluminum wires are slightly softer than pure copper wires.
Electrical performance. Because the conductivity of aluminum is worse than that of copper, the DC resistance of copper clad aluminum wires is greater than that of pure copper wires. Whether this affects mainly depends on whether the wires will be used for power supply, such as providing power for amplifiers. If the wires are used for power supply, the copper clad aluminum wires will lead to additional power consumption and more voltage reduction. When the frequency exceeds 5MHz, the AC resistance attenuation at this time has no obvious difference under these two different wires.
Copper clad aluminum is softer than pure copper wire and is easy to straighten in the production process. Therefore, to a certain extent, it can be said that copper clad aluminum wire has better return loss index than pure copper wire.
Economy. Copper clad aluminum wires are sold by weight, as are pure copper wires. Copper clad aluminum wires are more expensive than pure copper wires of the same weight. But the same weight of copper clad aluminum is much longer than the length of pure copper wire, which is calculated by length. For the same weight, copper clad aluminum wire is 2.5 times the length of copper wire, and the price is only a few hundred yuan per ton. Taken together, copper clad aluminum has great advantages. Because copper clad aluminum wires are relatively light, the transportation cost and installation and erection cost of the wires will be reduced, which will bring some convenience to the construction.