ACSS/AW conductors, employing aluminium-clad steel wires in their core, boast higher electrical conductivity and improved corrosion resistance compared to ACSS/GA conductors. In the design of ACSS/GA conductors, the zinc coating loses adhesion to steel wires at temperatures above 200°C.
Technical Specifications:
ACSS/AW conductors, employing aluminium-clad steel wires in their core, boast higher electrical conductivity and improved corrosion resistance compared to ACSS/GA conductors. In the design of ACSS/GA conductors, the zinc coating loses adhesion to steel wires at temperatures above 200 °C.
ACSS conductors find application in both overhead distribution and transmission lines. Comprising annealed aluminium strands with lower electrical resistance compared to standard aluminium strands but possessing lower mechanical strength, these conductors compensate for the reduced mechanical strength by incorporating high-strength steel wires in their core. The combination of high-strength steel wires with annealed aluminium layers reduces sag, increases current-carrying capacity, and diminishes line losses. Engineered to operate continuously at high temperatures up to 250 °C without compromising strength, ACSS conductors exhibit less sag under emergency electrical loads compared to typical ACSR conductors. The final sag of ACSS conductors remains unaffected by long-term aluminium creep. With low tension in annealed aluminium strands, the thermal expansion of ACSS conductors is primarily related to the steel core, preventing creep under daily tensile loads. ACSS conductors are available with three core types: galvanized (GA), galfan-coated (MM), and aluminium-clad (AW). ACSS/AW conductors, employing aluminium coating on steel wires in the core, boast higher electrical conductivity and improved corrosion resistance compared to ACSS/GA conductors. In the design of ACSS/GA conductors, the zinc coating loses adhesion to steel wires at temperatures above 200 °C. Additionally, operational temperatures exceeding this value reduce corrosion resistance, impacting service life due to the peeling of zinc-coated steel strands. Temperatures surpassing 225 °C lead to the formation of an alloy between the surface layer of zinc and the underlying steel, resulting in brittle properties and decreased corrosion resistance of galvanized steel wires. Aluminium-clad steel wires (AW) withstand higher temperatures up to about 300 °C, representing one of the advantages of ACSS/AW conductors.
ACSS conductors represent a fusion of aluminium strands and steel wires, with the steel wires forming the core of the conductor. One or more layers of annealed aluminium wires with a grade of 1350-O are wound around this core. The robust steel core bears the majority or all of the mechanical load of the conductor, completely annealing or softening due to the presence of aluminium. Leveraging its experience and expertise, Pooya Power Knowledge Enterprise has the capability to produce high-capacity conductors with various steel cores, including galvanized, galfan-coated, and aluminium-clad, aligning with the latest global methods and adhering to national and international standards.
A critical consideration in conductor selection is their resistance to corrosion, with corrosion resistivity needing to align with the environment to which the conductor is exposed. ACSS conductors with an aluminium-clad core (ACSS/AW) can be produced in different strength grades, AW2 and AW3, tailored to design requirements. For external aluminium conductive layers, Pooya Power Knowledge Enterprise can manufacture ACSS/AW conductors with round aluminium strands (ACSS/AW-RW) and trapezoidal strands (ACSS/AW-TW), in line with the latest global methods and adhering to national and international standards.