ACSS/TW aluminum conductors steel supported-Trapezoidal
Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductor, Steel-Supported (ACSS/TW) is a concentrically stranded conductor with one or more layers of trapezoidal shaped hard drawn and annealed 1350 aluminum wires on a central core of steel. ACSS/TW can either be designed to have an equal aluminum cross sectional area as that of a standard ACSS which results in a smaller conductor diameter maintaining the same ampacity level but reduced wind loading parameters or with diameter equal to that of a standard ACSS which results in a significantly higher aluminum area, lower conductor resistance and increased current rating.
ACSS/TW is designed to operate continuously at elevated temperatures, it sags less under emergency electrical loadings than ACSR/TW, excellent self-damping properties, and its final sags are not affected by long- term creep of aluminum. ACSS/TW also provides many design possibilities in new line construction: i.e., reduced tower cost, decreased sag, increased self-damping properties, increased operating temperature and improved corrosion resistance. The coating of steel core is selected to suit the environment to which the conductor is exposed and operating temperature of the conductor.
Reduced drag characteristics
Excellent self-damping properties
Improved current carrying capacity
Low wind and ice loading parameters
long term creep of aluminum doesnot affect final sag
ACSS/AW conductor meets or exceeds the following ASTM specifications:
1. B609 Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes.
2. B502 Aluminum-Clad Steel Core Wire for Aluminum conductors, Aluminum-Clad Steel Reinforced.
3. B856 Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported (ACSS).