ACSR (carrier steel wire for cables with aluminium conductors) are wires and monotron ropes used in power lines, which require high capacity and strength.
ACSR wires are galvanised steel wires used in these cables. ACSR wires/steel show less elastic or inelastic deformation in the face of mechanical stresses or loading and have a lower coefficient of thermal expansion.
Thanks to these properties, ACSR serves as a carrier for aluminium conductors.