—Electrical performance
What are the differences between copper-clad aluminum cables and pure copper cables in terms of performance？
In terms of electrical performance, Copper conducts electricity better than aluminum, the DC resistance of copper-clad aluminum conductors is larger than that of pure copper conductors,Whether this has an impact depends mainly on whether the cable will be used for power supply,Such as supplying power to an amplifier,If used for power supply, copper-clad aluminum conductors will result in additional power consumption and a greater voltage reduction.
When the frequency exceeds 5MHz, the AC resistance attenuation at this time is not significantly different under the two different conductors.Of course, this is mainly because of the skin effect of high-frequency currents, the higher the frequency, the closer the current flows to the conductor surface,The surface of the copper-clad aluminum conductor is pure copper material,When the frequency is high enough, the entire current flows in the copper.
At 5MHz, the current flows in a thickness of about 0.025 mm near the surface, while the copper layer of the copper-clad aluminum conductor is about twice as thick,The thickness of the copper layer of the copper-clad aluminum conductor is about twice that of this thickness.
For coaxial cables, because the transmitted signal is above 5MHz, the transmission effect of copper-clad aluminum conductors and pure copper conductors is the same.The attenuation of the cable in the actual test can prove this.
Post time: Nov-19-2023