What are the advantages of copper cables vs aluminum cables?

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1. Low resistivity: The resistivity of aluminum cables is about 1.68 times higher than that of copper cables.

2. Good ductility: the ductility of copper alloy is 20~40%, the ductility of electrical copper is above 30%, while that of aluminum alloy is only 18%.

3. High strength: the allowable stress at room temperature, copper is 7~28% higher than that of aluminum. Especially the stress at high temperature, the difference between the two is even greater.

4. Anti-fatigue: aluminum is easy to break after repeated bending, but copper is not easy. In terms of elasticity index, copper is also about 1.7~1.8 times higher than aluminum.

5. Good stability and corrosion resistance: the copper core is anti-oxidation and corrosion-resistant, while the aluminum core is easily oxidized and corroded.

6. Large carrying capacity: Due to the low resistivity, the allowable carrying capacity of copper core cables with the same cross-section is about 30% higher than that of aluminum core cables

7. Low voltage loss: due to the low resistivity of the copper core cable, the same current flows through the same cross section. The voltage drop of the copper core cable is small. The same power transmission distance can guarantee higher voltage quality; under the condition of allowable voltage drop, copper core cable power transmission can reach a longer distance, that is, the power supply coverage area is large, which is conducive to network planning and reduces the number of power supply points. .

8. Low heat generation temperature: Under the same current, the heat generation of copper cables with the same cross section is much smaller than that of aluminum cables, making the operation safer.

9. Low energy consumption: Due to the low resistivity of copper, it is obvious that the power loss of copper cables is lower than that of aluminum cables. This is conducive to improving the utilization rate of power generation and protecting the environment.

10. Anti-oxidation and corrosion resistance: The performance of the connector of the copper core cable is stable, and no accidents will occur due to oxidation. When the joint of the aluminum cable is unstable, the contact resistance will increase due to oxidation, and accidents will occur due to heat generation. Therefore, the accident rate is much higher than that of copper cables.

11. Convenient construction:
The copper core has good flexibility and the allowable bending radius is small, so it is convenient to turn and pass through the pipe;
The copper core is anti-fatigue, and it is not easy to break after repeated bending, so the wiring is convenient;
The copper core has high mechanical strength and can withstand large mechanical tension, which brings great convenience to construction and laying, and also creates conditions for mechanized construction.



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Post time: Jul-20-2023