ACSS/TW
Aluminum Conductor, Steel Supported. Trapezoidal Shaped Aluminum Strands. Bare.
Application & Features
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
| Codeword | Size (AWG or kcmil) (mm2) | No. of Strands | Nom. OD (mils) (mm) | Nominal Total Weight (lbs/1000') (kgs/km) | |||||
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336.4 KCMIL
336.4 KCMIL
|
0
0
|
693
17.60
|
542
807
|
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|
477 KCMIL
477 KCMIL
|
0
0
|
790
20.07
|
656
976
|
||||
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556.5 KCMIL
556.5 KCMIL
|
20
20
|
850
21.60
|
765
1138
|
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636 KCMIL
636 KCMIL
|
0
0
|
909
23.09
|
275
410
|
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664.8 KCMIL
664.8 KCMIL
|
20
20
|
930
23.62
|
935
1392
|
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762.8 KCMIL
762.8 KCMIL
|
20
20
|
990
25.15
|
1047
1557
|
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768.2 KCMIL
768.2 KCMIL
|
0
0
|
977
24.82
|
987
1469
|
||||
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795 KCMIL
795 KCMIL
|
20
20
|
1010
25.65
|
1091
1624
|
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954 KCMIL
954 KCMIL
|
20
20
|
1080
27.43
|
1224
1822
|
||||
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959.6 KCMIL
959.6 KCMIL
|
22
22
|
1110
28.20
|
1317
1959
|
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1033.5 KCMIL
1033.5 KCMIL
|
22
22
|
1130
28.72
|
1326
1974
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1158.4 KCMIL
1158.4 KCMIL
|
24
24
|
1196
30.38
|
1488
2214
|
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1192.5 KCMIL
1192.5 KCMIL
|
0
0
|
1225
31.12
|
1576
2346
|
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1233.6 KCMIL
1233.6 KCMIL
|
0
0
|
1245
31.62
|
1583
2357
|
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1272 KCMIL
1272 KCMIL
|
39
39
|
1260
32.00
|
1630
2426
|
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MERRIMACK
MERRIMACK
|
1433.6 KCMIL
1433.6 KCMIL
|
39
39
|
1340
34.04
|
1840
2738
|
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1590 KCMIL
1590 KCMIL
|
0
0
|
1358
34.49
|
1790
2664
|
||||
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1622 KCMIL
1622 KCMIL
|
39
39
|
1420
36.07
|
2107
3135
|
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1926.9 KCMIL
1926.9 KCMIL
|
42
42
|
1549
39.37
|
2471
3677
|
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2627.3 KCMIL
2627.3 KCMIL
|
64
64
|
1760
44.71
|
3062
4557
|
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null null
null null
|
0
0
|
1110
28.19
|
1316
1958
|
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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.