ACSR has long been the backbone of overhead transmission and distribution systems. It has altogether replaced older types of overhead conductors made of copper, which are now a days used only to meet specific demands.
ACSR offers optimal strength for line design. It consists of Aluminium Conductor stranded around a core made of steel wires of high tensile strength. Variable steel core stranding enables desired strength to be achieved without sacrificing ampacity. These conductor are “bare”, meaning that there is no insulation or jacket covering the conductor.