Advantages of copper core cable over aluminum core cable

Release date: 2021/5/12 14:59:52 | Publisher: Shenzhen Cptele Electronics Co., Ltd

 

1. Low resistivity: The resistivity of aluminum core cable is about 1.68 times higher than that of copper core cable.
2. Good ductility: the ductility of copper alloy is 20~40%, the ductility of electrical copper is more than 30%, and the ductility of aluminum alloy is only 18%.
3. High strength: The allowable stress at room temperature is 7~28% higher than that of aluminum. Especially at high temperatures, the difference between the two is even greater.
4. Anti-fatigue: Aluminum is easy to break when repeatedly bent, 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 oxidation resistant and corrosion-resistant, while the aluminum core is susceptible to oxidation and corrosion.
6. Large ampacity: Due to the low resistivity, the allowable ampacity (maximum current) of the copper core cable of the same section is about 30% higher than that of the aluminum core cable
7. Low voltage loss: due to the low resistivity of the copper core cable, the same current flows through the same section. The voltage drop of the copper core cable is small. The same transmission distance can ensure high voltage quality; Under the allowable voltage drop condition, the copper core cable transmission can reach a long distance, that is, the power supply coverage area is large, which is conducive to the planning of the network and reduces the number of power supply points.
8. Low heating temperature: Under the same current, the heat generation of copper core cable with the same section is much smaller than that of aluminum core cable, which makes the operation safer.
9. Low energy consumption: Due to the low resistivity of copper, the electrical energy loss of copper cables is low compared to aluminum cables, which is obvious. This is conducive to improving the utilization rate of power generation and protecting the environment.
10. Oxidation resistance and corrosion resistance: The connector of the copper core cable has stable performance and will not cause accidents due to oxidation. The joint of the aluminum core cable is unstable, and accidents often occur due to the increase of contact resistance due to oxidation, and heat generation. As a result, the accident rate is much greater than that of copper core cables.
11. Convenient construction:
The copper core is flexible and the allowable bending radius is small, so it is easy to turn and wear the pipe;
The copper core is fatigue-resistant, and it is not easy to break after repeated bending, so it is convenient for wiring;
The mechanical strength of the copper core is high, and it can withstand large mechanical tension, which brings great convenience to the construction and laying, and also creates conditions for mechanized construction.

 

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