What are the advantages of copper core cable over aluminum core cable?
Low resistivity: The resistivity of aluminum core cable is about 1 higher than that of copper core cable. 68 times. 2.
Good ductility: the elongation of copper alloy is 20 ~ 40%, the extension rate of copper for electrical engineering is above 30%, while that of aluminum alloy is only 18%. 3.
High strength: allowable stress at normal temperature, copper is 7 ~ higher than aluminum respectively ~ 28%.
Especially the stress at high temperature, the difference between the two is even more far. 4.
Anti-Fatigue: aluminum is easy to break after repeated bending, while copper is not. In terms of elasticity index, copper is also about 1. 5% higher than aluminum. 7 ~ 1. 8 times. 5.
Good stability and corrosion resistance: copper core is resistant to oxidation and corrosion, while aluminum core is easy to be oxidized and corroded. 6.
Large current-carrying capacity: due to low resistivity, the allowable current-carrying capacity of copper-core cables with the same cross section is higher than that of aluminum-core cables (Maximum current that can pass)About 30% high 7.
Low voltage loss: due to the low resistivity of copper core cable, under the condition of the same current flowing through the same cross section. The voltage drop of copper core cable is small.
The same transmission distance can ensure higher voltage quality;
Under the condition of allowable voltage drop, copper core 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. 8.
Low Heating Temperature: under the same current, the calorific value of copper core cable with the same cross section is much smaller than that of aluminum core cable, making the operation safer. 9.
Low energy consumption: due to the low resistivity of copper, compared with aluminum cables, copper cables have low power loss, which is obvious.
This is conducive to improving the utilization rate of power generation and protecting the environment. 10.
Anti-oxidation, corrosion resistance: the connector of copper core cable has stable performance and will not cause accidents due to oxidation.
When the joint of aluminum core cable is unstable, accidents often occur due to oxidation, which increases the contact resistance and generates heat. Therefore, the accident rate is much larger than that of copper core cables. 11.
Convenient construction: the copper core is flexible and the allowable Camber radius is small, so it is convenient to turn and wear pipes;
Copper core anti-fatigue, repeated bending is not easy to break, so the wiring is convenient;
The mechanical strength of the copper core is high, and it can withstand large mechanical pulling force, which brings great convenience to the construction and laying, and also creates conditions for mechanized construction.