ACSS/TW

Aluminum Conductor, Steel Supported. Trapezoidal Shaped Aluminum Strands. Bare.

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Application

Southwire's ACSS/TW is designed for overhead distribution and transmission lines. It is designed to operate continuously at elevated temperatures up to 250°C without loss of strength, 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. Southwire's ACSS/TW is available in equal area and equal diameter design. The equal area design allows equal ampacity in a smaller diameter conductor when compared with a standard ACSS conductor. The equal diameter design allows more ampacity in an equal diameter conductor when compared with a standard ACSS conductor. ACSS/TW also provides many design opportunities for new line construction: i.e., reduced tower cost, decreased sag, increased self-damping properties, increased operating temperature and improved corrosion resistance.

Specifications

Select a set of products below for more information:
Codeword Size (AWG or kcmil) (mm2) No. of Strands Nom. OD (mils) (mm) Nominal Total Weight (lbs/1000') (kgs/km)
604153
336.4 KCMIL 336.4 KCMIL
0 0
693 17.60
542 807
621222
477 KCMIL 477 KCMIL
0 0
790 20.07
656 976
613726
556.5 KCMIL 556.5 KCMIL
20 20
850 21.60
765 1138
612923
636 KCMIL 636 KCMIL
0 0
909 23.09
275 410
613102
664.8 KCMIL 664.8 KCMIL
20 20
930 23.62
935 1392
613697
762.8 KCMIL 762.8 KCMIL
20 20
990 25.15
1047 1557
626623
768.2 KCMIL 768.2 KCMIL
0 0
977 24.82
987 1469
611515
795 KCMIL 795 KCMIL
20 20
1010 25.65
1091 1624
324053
954 KCMIL 954 KCMIL
20 20
1080 27.43
1224 1822
610027
959.6 KCMIL 959.6 KCMIL
22 22
1110 28.20
1317 1959
612537
1033.5 KCMIL 1033.5 KCMIL
22 22
1130 28.72
1326 1974
615055
1158.4 KCMIL 1158.4 KCMIL
24 24
1196 30.38
1488 2214
612765
1192.5 KCMIL 1192.5 KCMIL
0 0
1225 31.12
1576 2346
617079
1233.6 KCMIL 1233.6 KCMIL
0 0
1245 31.62
1583 2357
693770
1272 KCMIL 1272 KCMIL
39 39
1260 32.00
1630 2426
607137
MERRIMACK MERRIMACK
1433.6 KCMIL 1433.6 KCMIL
39 39
1340 34.04
1840 2738
616032
1590 KCMIL 1590 KCMIL
0 0
1358 34.49
1790 2664
610607
1622 KCMIL 1622 KCMIL
39 39
1420 36.07
2107 3135
612311
1926.9 KCMIL 1926.9 KCMIL
42 42
1549 39.37
2471 3677
614203
2627.3 KCMIL 2627.3 KCMIL
64 64
1760 44.71
3062 4557
610027
null null null null
0 0
1110 28.19
1316 1958

Standards & References

Southwire's ACSS/TW conductor meets or exceeds the following ASTM specifications:

  • B500 Metallic Coated Stranded Steel Core for Aluminum Conductors, Steel Reinforced.
  • B609 Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
  • B802 Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors, Steel Reinforced.
  • B803 High-Strength Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum and Aluminum-Alloy Conductors, Steel Reinforced.
  • B857 Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Supported (ACSS/TW).

Construction

ACSS is a composite concentric-lay-stranded conductor. Steel strands form the central core of the conductor with one or more layers of 63% minimum average conductivity aluminum 1350-0 wire stranded around it. The steel core carries most or all of the mechanical load of the conductor due to the "0" (fully annealed or soft) temper aluminum. Steel core wires are protected from corrosion by Galfan® , zinc-5% aluminum-mischmetal alloy coating. High strength steel core, aluminized, and aluminum clad steel core is also available.