What are the ten advantages of spiral cable compared to aluminum 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 ductility of copper alloy is 20~40%, the ductility of electrical copper is above 30%, while that of aluminum alloy is only 18%.

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

4. Anti-fatigue: aluminum is easy to crack after repeated bending, but copper is not easy. In terms of elasticity target, copper is also about 1.7~1.8 times higher than aluminum.

5. The spiral cable has good stability and corrosion resistance: the copper core is anti-oxidation and corrosion-resistant, while the aluminum core is easy to be oxidized and corroded.

6. Large current carrying capacity: Because of the low resistivity, the copper core cable with the same cross-section is about 30% higher than the current carrying capacity (the maximum current that can be passed) allowed by the aluminum core cable.

7. Low voltage loss: Because the resistivity of the copper core cable is low, the voltage drop of the copper core cable is small when the same current flows through the same section. The same power transmission interval can ensure higher voltage quality; under the permitted voltage drop conditions, the copper core cable can transmit power to a farther 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 heating value of the copper core cable with the same section is much smaller than that of the aluminum core cable, making the operation safer.

9. Low energy consumption: Because of the low resistivity of copper, the power loss of copper cables is low compared to aluminum cables, which is clear. This is conducive to improving the utilization rate of power generation and protecting the environment.

10. Anti-oxidation and corrosion resistance: The connector of the copper core cable is stable and will not cause accidents due to oxidation. The joint of the aluminum core cable is not stable, and the touch resistance will increase due to oxidation, which will cause an accident. Therefore, the accident rate is much larger than that of copper core cables.