Steel core aluminum stranded wire, English Name: conductor steel reinforced aluminium, ACSR. Is to strengthen the lead single or multi-layer aluminum strand wire in galvanized steel core line. Mainly used in electric power and transmission line industry.

ACSR is made of aluminum and steel wire twisted, suitable for overhead transmission line.

The inner steel core, the outside is with aluminum by stranding the winding around the core steel; steel core is mainly to increase the strength of the role, aluminum wire mainly transmission of electricity;

On the high voltage transmission line, due to the limited line path, but could not in a path lines shelves, people come up with using a path, a tower, hanging a plurality of conductors, namely a line equivalent frame method for multiple lines; the 500kV transmission line, in our country most of the four wires hanging, the stringing said same tower and frame.