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About UsHongsheng Wire and Cable Co., Ltd. is a key enterprise in Zhejiang Province specializing in the production of wires and cables, integrating industry, commerce, trade, production, education, and research. Its main production, processes, and testing equipment are all designed and configured according to international standards.
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ProductsEmploy scientific management and quality assurance systems based on GB/T19001—IS09001 and GB/T24001—ISO14001 environmental management systems to organize production management.
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Contact UsWe believe: Great achievements depend on quality. Your satisfaction is our eternal pursuit!
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2022
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Briefly describe the advantages of copper core cables and aluminum core cables respectively.
Wires are divided into copper core cables and aluminum core cables according to different conductors. Copper core cables are more common in daily life because of their wide range of applications, so many people are not familiar with aluminum core cables; in order for everyone to understand their advantages, the editor lists the following content.
Wires are divided into copper core cables and aluminum core cables according to different conductors. Copper core cables are more common in daily life because of their wide range of applications, so many people are not familiar with aluminum core cables; in order for everyone to understand their advantages, the editor lists the following content.
Advantages of Copper Core Cables
1. Good ductility: The ductility of copper alloy is 20~40%, and the ductility of electrical copper is over 30%, while the ductility of aluminum alloy is only 18%.
2. High strength: The allowable stress at normal temperature is 7~28% higher than that of aluminum. Especially the stress at high temperature, there is a world of difference between them.
3. Fatigue resistance: Aluminum is easy to break after repeated bending, while copper is not. In terms of elastic modulus, copper is also about 1.7~1.8 times higher than aluminum.
4. Large current carrying capacity: Due to its low resistivity, the current carrying capacity (maximum current that can pass through) of copper core cables with the same cross-sectional area is about 30% higher than that of aluminum core cables.
5. Low voltage loss: Due to the low resistivity of copper core cables, under the same current in the same section. The voltage drop of copper core cable is small. Therefore, higher voltage quality can be guaranteed for the same transmission distance; in other words, under the allowable voltage drop, copper cable transmission can reach 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.
6. Low heating temperature: Under the same current, the heat generation of copper core cables with the same cross-sectional area is much smaller than that of aluminum core cables, ensuring safe operation.
7. Low energy consumption: Compared with aluminum cables, copper cables have lower power consumption due to the low resistivity of copper, which helps to improve power generation efficiency and protect the environment.
8. Oxidation resistance and corrosion resistance: The joints of copper core cables have stable performance and will not cause accidents due to oxidation. The joints of aluminum core cables are unstable and often cause accidents due to increased contact resistance and oxidation heating. Therefore, the accident rate is much higher than that of copper core cables.
9. Construction convenience:
Copper has high mechanical strength and can withstand large mechanical tensile force, which brings convenience to construction and laying, and also creates conditions for mechanized construction.
Advantages of Aluminum Core Cables
1. Low price: The price of copper bar is 3.5 times that of aluminum bar, and the proportion of copper is 3.3 times that of aluminum, so aluminum core cables are much cheaper than copper core cables, suitable for low-capital projects or temporary power supply.
2. Light weight: The weight of aluminum core cable is 40% of that of copper core cable, and the cost of construction and transportation is low.
3. Oxidation resistance and corrosion resistance: Aluminum reacts with oxygen in the air to quickly form an oxide film, which can prevent further oxidation, so aluminum conductor is the material for high-voltage, large-section, and large-span overhead power transmission.
Although aluminum core cables are cheap, copper core cables have outstanding advantages in cable power supply, especially in underground cable power supply. Underground copper cable power supply has the characteristics of low accident rate, corrosion resistance, high reliability, and convenient construction and maintenance. This is also the reason why copper cables are mainly used for underground cable power supply in China.
Copper core cable
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