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What are the advantages of copper core cables compared to aluminum core cables?
Release time:
2021-04-07
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%, while the ductility 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 temperature, the difference between the two is even greater.
4. Anti-fatigue: Aluminum is easy to break after repeated bending, while copper is not easy. In terms of elasticity index, copper is also about 1.7 to 1.8 times higher than aluminum.
5. Good stability and corrosion resistance: The copper core is resistant to oxidation and corrosion, while the aluminum core is susceptible to oxidation and corrosion.
6. Large current carrying capacity: due to the low resistivity, the copper core cable with the same cross-section is about 30% higher than the allowable current carrying capacity (the maximum current that can pass) of the aluminum core cable
7. Low voltage loss: Due to the low resistivity of the copper core cable, the same current flows in the same cross-section. The voltage drop of the copper core cable is small. The same power transmission distance can ensure higher voltage quality; under the conditions of allowable voltage drop, the copper core cable power transmission can reach a longer distance, that is, the power supply coverage area is large, which is beneficial to network planning and reduces the number of power supply points. .
8. Low heating temperature: Under the same current, the copper core cable with the same cross-section has a much smaller heating value than the aluminum core cable, which makes the operation safer.
9. Low energy consumption: Due to the low electrical resistivity of copper, it is obvious that copper cables have low power loss compared to 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 there will be no accidents due to oxidation. When the connector of aluminum core cable is unstable, the contact resistance will increase due to oxidation and heat will cause accidents. Therefore, the accident rate is much greater than that of copper core cables.
11. Convenient construction:
The copper core has good flexibility, and the allowable bend radius is small, so it is convenient to turn and easy to wear;
The copper core is resistant to fatigue and is not easy to break after repeated bending, so the wiring is convenient;
The mechanical strength of the copper core is high, and it can withstand greater mechanical tension, which brings great convenience to construction and laying, and also creates conditions for mechanized construction.
RELATED INFORMATION
2021-04-29
2021-04-07
RELATED INFORMATION
Henan crosslinking cable co., LTD. (formerly zhengzhou crosslinking cable factory) is specialized in manufacturing wire and cable, trade, production in one of the large enterprises.
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Henan zhongyuan district, zhengzhou city west ring road, university of science and technology park
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