Power cable with copper aluminum generation is a kind of development trend

( Industry news] Power cable with aluminum and copper is a kind of development trend day Hao P China nonferrous metals industry association, a senior expert said, aluminum and copper power cable is a kind of development trend, but to achieve the ideal application effect is still a long way to go, this is because some users do not accept change of aluminum and copper. There is a view that the resistivity of aluminum conductor is bigger than the resistivity of copper conductors, use aluminum metal materials as power cable conductor, the energy loss during transmission should be bigger than copper material, in fact, according to this view without theory. Because the energy loss in the process of transmission depends on the conductor resistance instead of resistivity. Recommendation according to the country, when ℃, the dc resistance of a copper conductor section and its corresponding big two specifications of the aluminum conductor dc resistance, that is, from the transmission of energy loss in the process of consideration, a copper conductor power cable can completely by corresponding big two specifications of the aluminum conductor cable is replaced, the carrying capacity is considerable. In addition, look from the cable cost, under the same load flow, under the condition of aluminium conductor cable metal conductor was much lower raw materials cost is copper conductor cable, about one quarter of left and right sides. The personage inside course of study thinks, in the case of copper prices so high, whether cable users or design units, in guarantee the carrying capacity of the same case, the choice of aluminium core cable is completely feasible, it not only make cable manufacturing enterprises can avoid risk, is conducive to the healthy development of the industry, at the same time to limit the rise in copper prices will also play a role. A case, a project design institute designed for a project of copper core cable is expected to spend more than ten thousand yuan, and the project owner will change copper core aluminium core cable, has spent more than ten thousand yuan alone solve the problem.