A large-scale wire and cable enterprise group integrating manufacturing, sales, design and research and development.
INQUIRY NOW
A large cale wire and cable enterprise group integrating manufacturing,sales, design and research and development.
INQUIRY NOWSeptember 02, 2024
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%, and the ductility of copper for electrical use is above 30%, while that of aluminum alloy is only 18%.
3. High strength. The allowable stress at room temperature is 7~28% higher for copper than for aluminum; especially the stress at high temperature, the difference between the two is even greater.
4. Fatigue resistance. Aluminum is easy to break after repeated bending, but copper is not easy to break; in terms of elasticity index, copper is also about 1.7~1.8 times higher than aluminum.
5. Good stability and corrosion resistance. Copper core is resistant to oxidation; corrosion resistance, while aluminum core is easily oxidized and corroded.
6. Large current carrying capacity. Due to its low resistivity, the copper core cable with the same cross-section has a maximum current carrying capacity of 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 voltage drop of the copper core cable is small when the same current flows through the same cross-section; therefore, the same transmission distance can ensure a higher voltage quality, or in other words, under the condition of the allowable voltage drop, the copper core cable can reach a longer distance (i.e., 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 with the same cross-section is much smaller than that of the aluminum core cable, making the operation safer.
9. Low energy consumption. Due to the low resistivity of copper, the power loss of copper cable is lower than that of aluminum cable, which is obvious. This is conducive to improving the utilization rate of power generation and protecting the environment.
10. Aluminum is easy to oxidize and presents a large film resistance
11. High expansion coefficient. When aluminum is connected with copper, iron, etc., there is contact resistance at the connection point and heat is generated. The high expansion coefficient of aluminum is squeezed and recovered after cooling. There will be gaps, air will enter, and aluminum oxide will be formed.
12. The main difference lies in the different transmission efficiency and resistance value
13. Copper core cable has good performance, high transmission efficiency, low resistance, and less energy loss in the cable. Aluminum core cable is worse than copper core cable. Mixing cable heads will increase transmission loss. It is recommended to avoid mixing.
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