Composite Overhead Ground Wire for Electric Transmission

Common aluminum clad steel strand is used as conductor; The steel core is mainly used to increase the strength, and the aluminum strand is mainly used to transmit electric energy. The cross-sectional area of the conductor varies depending on the voltage. For example, the conductors of 500 kV transmission lines are generally LGJ-400/35 conductors. L is the abbreviation of aluminum wire, G is the abbreviation of steel core, J is the abbreviation of strand, 400 is aluminum 400 mm2, 35 is steel 35 mm2.

Alloy power cables make up for the shortcomings of the previous pure aluminum cables. Although the conductivity of the cables has not been improved, the bending performance, creep resistance and corrosion resistance have been greatly improved, which can ensure the continuous performance of the cables in case of long-term overload and overheating. AA-8030 series aluminum alloy conductors can greatly improve the conductivity and high temperature resistance of aluminum alloy cables, and solve the problems of pure aluminum conductors and creep.