Copper cable and aluminum core cable have more prominent advantages

[China Aluminum Network] Copper core cable has more advantages than aluminum core cable:

1. Low resistivity: The resistivity of the aluminum core cable is about 1.68 times higher than that of the copper core cable.

2. Good ductility: The elongation rate of copper alloy is 20~40%, and the extension rate of copper for electrical use is more than 30%, while that of aluminum alloy is only 18%.

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

4. Anti-fatigue: aluminum repeatedly bending and breaking, copper is not easy. In terms of elasticity, copper is about 1.7 to 1.8 times higher than aluminum.

5. Good stability, 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, copper-core cables with the same cross-section are about 30% higher than the allowable current-carrying capacity (higher current that can pass) of aluminum-core cables.

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. Therefore, the same transmission distance can guarantee higher voltage quality; or, under the condition of allowable voltage drop, the copper core cable can transmit electricity at a relatively long distance, ie, the power coverage area is large, which is conducive to network planning and reduction. The number of supply points is set.

8. Low heating temperature: Under the same current, the copper cable of the same section has a much smaller heating capacity than the aluminum core cable, making the operation more secure.

9. Low energy consumption: Since the copper has a low electrical resistivity, it is obvious that the power loss of the copper cable is lower than that of the aluminum cable. This will help improve the efficiency of power generation and protect the environment.

10. Anti-oxidation and anti-corrosion: The connector of the copper core cable has stable performance and will not cause accidents due to oxidation. The joints of the aluminum core cable are often unstable and cause accidents due to increased contact resistance and heat generation due to oxidation. Therefore, the accident rate is much larger than copper core cable.