What are the advantages of copper-core cables?

Advantages of Copper Core Cables Over Aluminum Core Cables:

Low resistivity: The resistivity of aluminum-core cables is approximately 1.68 times higher than that of copper-core cables.

2. High strength: The allowable stress at room temperature is 7-28% higher in copper than in aluminum. This difference is even more pronounced at high temperatures.

3. Excellent ductility: Copper alloys have a ductility of 20~40%, while electrical copper boasts a ductility over 30%, with aluminum alloys reaching only 18%.

4. Excellent stability and corrosion resistance: Copper cores are anti-oxidative and resistant to corrosion, while aluminum cores are prone to oxidation and corrosion.

5. Fatigue Resistance: Aluminum tends to break after repeated bending, whereas copper is more resistant. In terms of elasticity, copper is approximately 1.7 to 1.8 times higher than aluminum.

6. High Current-Carrying Capacity: Due to lower resistivity, copper-core cables with the same cross-section can carry approximately 30% more current than aluminum-core cables (the amount of electricity they can safely conduct).

7. Lower Heating Temperature: Under the same current, the copper-core cable with the same cross-section generates significantly less heat than aluminum-core cable, making operation safer.

8. Low Energy Consumption: Due to its low resistivity, copper cables have lower power loss compared to aluminum cables, which is quite evident. This is beneficial for improving power generation efficiency and protecting the environment.

9. Low Voltage Loss: Due to the low resistivity of copper-core cables, under the same cross-sectional area and with the same current flowing, the voltage drop of copper-core cables is minimal. Therefore, the same transmission distance can ensure higher voltage quality; or, within the permissible voltage drop conditions, copper-core cables can transmit power over greater distances, meaning a larger service coverage area. This is beneficial for network planning and reduces the number of power supply points needed.