The Aluminium Conductor Steel Supported (ACSS) represents a category of High-Temperature-Low-Sag (HTLS) conductors, offering distinct advantages over conventional ACSR conductors. ACSS conductors feature the incorporation of 1350-O annealed aluminium wires in contrast to the standard 1350-H19 variant used in ACSR conductors. This substitution results in noteworthy enhancements. Notably, annealed aluminium wires boast a higher electrical conductivity of 63% IACS, compared to the 61.2% IACS conductivity of drawn, hardened aluminium wires utilized in ACSR conductors. Consequently, ACSS conductors are capable of carrying increased electrical current.
Given the advantages outlined for ACSS conductors, these types of conductors are considered an ideal option for projects requiring high current carrying capacity, such as increasing the capacity of existing lines or constructing new lines in space-constrained areas. The high-temperature tolerance of these conductors allows for maximum utilization of the transmission lines’ capacity without concern for loss of mechanical strength. Furthermore, the use of ACSS conductors can lead to reduced energy losses in transmission lines, resulting in improved overall power system efficiency. This, in turn, will lead to savings in operational costs and a reduction in the environmental impact of energy production and transmission. Additionally, the stability of tensile strength at high temperatures ensures the safety and reliability of transmission line operation under various weather and loading conditions. ACSS conductors have a higher operating temperature compared to ACCC conductors, but they also have a higher weight and coefficient of thermal expansion. On the other hand, ACCC conductors have higher electrical conductivity and current carrying capacity than ACSS conductors.

ACSS/GA

ACSS.GA Conductor
ACSS.GA Conductor

The ACSS/GA conductor is a kind of High-Temperature Low-Sag conductors. The most important difference between ACSS conductors compared to ACSR conductors is the use of 1350-O annealed aluminum wires instead of hard-drawn 1350-H aluminum wires which enhances the current-carrying capacity and operating temperature of these conductors.

ACSS/MA

ACSS.MA
ACSS.MA

ACSS/MA conductors are made of round aluminium wires stranded around a steel core. The steel core in ACSS/MA consists of Galfan-Coated steel wires. Galfan is composed of Zinc - %5 Aluminium - Mischmetal which enhances the corrosion resistivity of the core. The use of Galfan-Coated steel wires improves the lifespan and operating temperature of ACSS/MA conductors.

ACSS/AW

ACSS.AW
ACSS.AW

ACSS/AW conductors, employing aluminium-clad steel wires in their core, boast higher electrical conductivity and improved corrosion resistance compared to ACSS/GA and ACSS/MA conductors. Compared to both ACSS/GA and ACSS/MA types, the ACSS/AW can operate at higher temperatures as the adhesion between the substrate and the coating is higher for aluminium-clad steel.

ACSS/TW

ACSS TW
ACSS TW

ACSS/TW conductors utilize trapezoidal aluminium wires instead of conventional round wires. While conventional ACSS conductors employ circular aluminium strands, the utilization of trapezoidal-shaped aluminium strands offers enhanced current transmission, reduced energy loss, compact design, and reduced diameter. Trapezoidal aluminium strands boast a larger cross-sectional area.

ACSS/AW-TW

ACSS AWTW
ACSS AWTW

ACSS/AW-TW conductors utilize trapezoidal aluminium wires wounded around a steel core made up of aluminium-clad steel wires. The combination of trapezoidal aluminium wires and aluminium-clad steel core enhances the electrical and anti-corrosion properties of this type of ACSS conductors compared to conventional ACSS conductors.