Several advantages of copper core cable over aluminum core cable

Time of Release:

2022-11-26

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Low resistivity: The resistivity of aluminum core cable is about 1.68 times higher than that of copper core cable. 2. Good ductility: the elongation rate of copper alloy is 20~40%, the elongation rate of copper for electrical engineering is more than 30%, and the elongation rate of aluminum alloy is only 18%.

Several advantages of copper core cable over aluminum core cable

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 elongation rate of copper alloy is 20~40%, the elongation rate of copper for electrical engineering is more than 30%, and the elongation rate of aluminum alloy is only 18%.

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

4. Fatigue resistance: aluminum is easy to break after repeated bending, but copper is not easy. In terms of elasticity indicators, copper is also about 1.7~1.8 times higher than aluminum.

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

6. Large ampacity: Due to low resistivity, the copper core cable of the same section is about 30% higher than the allowable ampacity (maximum current that can be passed) 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 higher voltage quality; Under the allowable voltage drop conditions, the copper core cable transmits electric energy to a long 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 heating temperature: Under the same current, the heat generation of the copper core cable of the same section is much smaller than that of the aluminum core cable, which makes the operation safer.

9. Low energy consumption: Due to the low resistivity of copper, the low power loss of copper cables compared to aluminum cables is obvious. This helps to improve the efficiency of power generation and protect the environment.

10. Anti-oxidation 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 oxidation that increases the contact resistance and heats up. Therefore, the accident rate is much larger than that of copper-core cables.

11. Convenient construction:

The copper core is flexible and the allowable bending radius is small, so it is convenient to bend and easy to penetrate the pipe;

The copper core is fatigue-resistant, 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 tensile forces, which brings great convenience to construction and laying, and also creates conditions for mechanized construction.

 

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