Copper - sheathed cable - Copper core cable advantages
Copper core armoured cable
Low resistivity of copper core cable has good ductility, high strength, good resistance to fatigue, good stability, low load flow of copper core cable, low voltage, low heating temperature, low energy consumption, convenient construction and so on.
Copper core cable advantages:
1. low resistivity: aluminum cable resistivity is higher 1.68 times than copper cable.
2. the ductility is good: the ductility of the copper alloy is 20~40%, and the electrician copper is more than 30%, while the aluminum alloy is only 18%.
3. high strength: under normal temperature, the allowable stress, copper is higher 7~28% than aluminum alloy. Especially at high temperature, the difference between two is very far.
4. anti fatigue: Aluminum repeatedly bending is easy to fracture, copper is not easy. In terms of elastic index, copper is also about 1.7~1.8 times higher than aluminum.
5. good stability, corrosion resistance: copper core oxidation resistance, corrosion resistance, while the aluminum core is susceptible to oxidation and corrosion.
6. large carrying capacity: due to the low resistivity, the same cross section of the copper core cable to allow carrying capacity is higher 30% than the aluminum core cable (able to pass through the maximum current).
7. low voltage loss: because of the low resistivity of the copper core cable, as the same section of the flow through the same current situation, voltage of copper core cable is small. Therefore, the same transmission distance, can guarantee the high voltage quality; or in the allowable voltage drop condition, the copper core cable transmission can reach further distance, that is, power supply covers large area, is conducive to the network planning, reduce the number of power points.
8. heating temperature is low: in the same current, the same cross section of the copper core cable heating capacity is much smaller than the aluminum core cable, making the operation more safe.
9. low energy consumption: due to the low resistivity of copper, compared to the aluminum cable, the power loss of copper cable is low, which is obvious. This is conducive to improve the utilization of power generation and protection of the environment.
10. oxidation resistance, corrosion resistance: copper core cable connection head performance is stable, not due to oxidation and accident. The joint of the aluminum core cable is often due to the oxidation of the contact resistance increases, fever and accident. Therefore, the accident rate is much greater than the copper core cable.
11. It is convenient for construction: (1)copper core flexible, allow the curvature radius is small, so easy to bend, wear tube is easy; (2) copper core anti fatigue, repeated bending is not easy to break, so that the wiring is simple; (3) the mechanical strength of the copper core is high, withstand high mechanical tension, bring great convenience for laying construction, for mechanical construction create the conditions.

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