Copper core cable has more advantages than aluminum core cable:
Low resistivity: The resistivity of aluminum core cable is about 1.68 times higher than that of copper core cable.
Good ductility: the elongation rate of copper alloy is 20 ~ 40%, the elongation rate of copper for electrical use is more than 30%, while that of aluminum alloy is only 18%.
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 far.
4. Fatigue resistance: aluminum is easy to break after repeated bending, while copper is not easy. In terms of elasticity, 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.
Large current carrying capacity: Due to 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 pass) allowed by the aluminum core cable. Low voltage loss: due to the low resistivity of the copper core cable, the same current flows through the same section. Copper core cable voltage drop is small. Therefore, the same transmission distance can ensure a higher voltage quality; in other words, under the allowable voltage drop conditions, the copper-core cable transmission can reach a longer distance, that is, the power supply coverage area is large, which is conducive to network planning. Reduce the number of power supply points.
Low heating temperature: Under the same current, the heat of the copper core cable with the same cross-section is much smaller than that of the aluminum core cable, making the operation safer.
Low energy consumption: Due to the low resistivity of copper, the power loss of copper cables is low compared to aluminum cables, which is obvious. 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 has stable performance and will not cause accidents due to oxidation. When the joint of aluminum core cable is unstable, the contact resistance is often increased due to oxidation, and the accident occurs due to heat generation. Therefore, the accident rate is much larger than that of copper core cable.
11. Convenient construction: ① The copper core has good flexibility and small allowable bending radius, so it is convenient to turn and wear pipes easily; ② The copper core is anti-fatigue and not easy to break after repeated bending, so the wiring is convenient; ③ The copper core has high mechanical strength and can withstand large mechanical pulling force, which brings great convenience to the construction and laying and creates conditions for mechanized construction.
Qingdao Huaqiang Cable is a manufacturer specializing in the production of wires and cables. The performance of Huayu brand wires and cables produced by the company meets the requirements of the International Electrotechnical Commission and national standards. The leading products are: aluminum alloy cables, crosslinked power cables, PVC insulated power cables, control cables, computer cables, mineral insulated cables, wires and cables for electrical equipment, etc. Various types of cables can also be processed and customized according to user needs.