What are the advantages of copper core cables that can be categorized?

I. The advantages of copper core cable can be divided into what?1, low resistivity: aluminum core cable resistivity than copper core cable is about 1.68 times higher.2, ductility is good: the ductility of copper alloy is 20~40%, the ductility of copper for electrical use is more than 30%, while the aluminum alloy is only 18%.3, high strength: the permissible stress at room temperature, the copper can be up to 20, the aluminum is 15.6kgt/mm2. the tensile Strength limit, copper can reach 45kgt/mm2, aluminum is 42kgt/mm2. copper than aluminum were higher than 7~28%. Especially at high temperatures of stress, copper in 400oc when there are 9~12kgt/mm2, while aluminum in 260oc when it quickly dropped to 3.5kgt/mm2. 4, fatigue resistance: aluminum repeated bending easy to break, copper is not easy. Elasticity indicators, copper is also higher than aluminum about 1.7 ~ 1.8 times. 5, good stability, corrosion resistance: copper core oxidation, corrosion resistance. Copper core cable connector performance is stable, not due to oxidation and accidents. Aluminum core cable connectors are unstable, often due to oxidation to increase the contact resistance, heat and accidents. Therefore, the accident rate is much larger than the copper-core cable. 6, large current-carrying capacity: due to low resistivity, the same cross-section of the copper-core cable than the aluminum-core cable to allow the current-carrying capacity (can pass through the larger current) is about 30% higher. 7, low voltage loss: due to the low resistivity of the copper-core cable, in the same cross-section of the same current flowing through the same case, the copper-core cable, the small voltage drop. Therefore, the same transmission distance, can ensure higher voltage quality; or, in the allowable voltage drop conditions, copper-core cable transmission can reach a longer distance, that is, the power supply covers a large area, is conducive to the planning of the network, reduce the number of power supply points set. 8, low heating temperature: in the same current, the same cross-section of the copper-core cables with the heat than the aluminum-core cables is much smaller, which makes the operation safer. 9, energy consumption Low: due to the low resistivity of copper, compared with aluminum cables, copper cables, low power loss, which is conducive to improving the utilization rate of power generation and protection of the environment. 10, construction is convenient: due to the good flexibility of the copper core, the allowable bending radius is small, so it is convenient to bend, easy to wear a pipe; due to the fatigue resistance of the copper core, repeated bending is not easy to fracture, so it is convenient to wiring; but also due to the mechanical strength of the copper core is high, can withstand a large mechanical tensile force, bringing great convenience to the construction and laying of the cable. To the construction of the laying of great convenience, but also for the mechanization of construction conditions.

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