ACSR is made of twisted aluminum wire and steel wire which is used on
overhead transmission lines.
ACSR has simple structure, and it is easy to set up and maintain, low
cost line, large transmission capacity, also conducive to cross rivers
and valleys, which have the laying of special geographical conditions.
ACSR has features of good conductivity, sufficient mechanical
strength, tensile strength, and pole distance can be enlarged. It is
widely used in various voltage levels of overhead transmission and
distribution lines.
Regarding to the high-voltage transmission lines, due to the limited
path lines, and Can’t be in a path on multiple lines, people came up
with the use of a path, a tower, hanging a plurality of wires, which
is equivalent to rack up more than one line; for 500KV transmission
lines, mostly used to the way of hang four conductors, which is called
same Tower and same Frame.