This specification covers shaped wire compact concentric-lay-stranded aluminum conductor (AAC/TW) and its component wires for use as overhead electrical conductors. The trapezoidal aluminum wires shall meet the prescribed tensile strength and elongation requirements. Electric-butt welds, electric-butt cold-upset welds, or cold-pressure welds may be made in the individual aluminum wires during the stranding process. Requirements for the lay and construction of the conductor are detailed. The methods of determining the rated strength, breaking strength, mass, and electrical resistance are given. Tests for mechanical and electrical properties of aluminum wires shall be made before stranding. For the purpose of calculating mass per unit length, cross-sections, and the like, the density of aluminum to be taken is specified.
Область применения1.1 This specification covers shaped wire compact concentric-lay-stranded aluminum conductor (AAC/TW) and its component wires for use as overhead electrical conductors (Explanatory Note 1 and Note 2).
1.2 The values stated in inch-pound units are to be regarded as the standard with the exception of temperature and resistivity. The SI equivalents of inch-pound units may be approximate.
Note 1—AAC/TW is designed to increase the aluminum area for a given diameter of conductor by the use of trapezoidally shaped wires (TW). The conductors consist of a central core of one round aluminum wire or a seven-strand compact round core surrounded by two or more layers of trapezoidal aluminum 1350-H19 wires. For the purposes of this specification, the sizes listed are tabulated on the basis of the finished conductor having an area equal to that of specific sizes of standard AAC (Table 1) or in fixed diameter increments (Table 2) so as to facilitate conductor selection.TABLE 1 Construction Requirements for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors Sized to Have Areas Equal to AAC SizeCode WordA
AAC/TW
Conductor size
Nominal Outside
Diameter
Number of
Aluminum
Wires
Number
of Layers
Nominal Mass
Rated Strength
kcmil
mm
in.
mm
lb/1000ft
kg/km
1000 lbf
kN
Tulip/TW
336.4
170
0.612
15.5
17
2
315.3
469.4
6.02
26.8
Canna/TW
397.5
201
0.661
16.8
17
2
372.6
554.7
6.96
31
Cosmos/TW
477.0
242
0.720
18.3
17
2
447.1
665.6
8.36
37.2
Zinnia/TW
500.0
253
0.736
18.7
17
2
468.7
697.7
8.76
39
Mistletoe/TW
556.5
282
0.775
19.7
17
2
521.6
776.5
9.75
43.4
Meadowsweet/TW
600.0
304
0.803
20.4
17
2
562.4
837.2
10.52
46.8
Orchid/TW
636.0
322
0.825
21.0
17
2
596.1
887.4
11.1
49.4
Verbena/TW
700.0
355
0.864
21.9
17
2
656.1
976.7
12.3
54.7
Nasturtium/TW
750.0
380
0.893
22.7
17
2
702.1
1045
13.1
58.3
Arbutus/TW
795.0
403
0.919
23.3
17
2
745.1
1109
13.6
60.5
Cockscomb/TW
900.0
456
0.990
25.1
31
3
843.6
1256
15.4
68.5
Magnolia/TW
954.0
483
1.018
25.9
31
3
894.2
1331
16.4
72.9
Hawkweed/TW
1000.0
507
1.041
26.4
31
3
937.3
1395
17.1
76.1
Bluebell/TW
1033.5
524
1.057
26.8
31
3
968.7
1442
17.7
78.7
Marigold/TW
1113.0
564
1.095
27.8
31
3
1043.2
1553
19.1
85.0
Hawthorn/TW
1192.5
604
1.132
28.8
31
3
1117.7
1664
20.4
90.7
Narcissus/TW
1272.0
644
1.168
29.7
31
3
1192.2
1775
21.8
97.0
Columbine/TW
1351.5
685
1.202
30.5
31
3
1266.3
1885
23.2
103
Carnation/TW
1431.0
725
1.236
31.4
31
3
1341.3
1997
24.0
107
Coreopsis/TW
1590.0
805
1.315
33.4
49
4
1490.3
2219
27.0
120
Jessamine/TW
1750.0
887
1.377
35.0
49
4
1640.3
2442
29.7
132
Cowslip/TW
2000.0
1013
1.468
37.3
49
4
1893.0
2818
33.9
151
Lupine/TW
2500.0
1266
1.648
41.9
71
5
2366.2
3522
41.9
186
Trillium/TW
3000.0
1520
1.799
45.7
71
5
2839.5
4227
50.3
224
A Code words shown in this column are obtained from “Publication 50, Code Words for Overhead Aluminum Electrical Conductors,” by the Aluminum Association. They are provided for information only.TABLE 2 Construction Requirements for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, in Fixed-Diameter IncrementsCode WordA
AAC/TW
Conductor Size
Nominal Outside
Diameter
Number of
Aluminum
Wires
Number
of Layers
Nominal Mass
Rated Strength
kcmil
mm
in.
mm
lb/1000 ft
kg/km
1000 lbf
kN
Logan/TW
322.5
163
0.60
15.2
17
2
302.3
450
5.88
26.2
384.5
195
0.65
16.5
17
2
360.4
536.5
6.74
30
Wheeler/TW
449.4
228
0.70
17.8
17
2
421.2
627
7.88
35.1
521.7
264
0.75
19.1
17
2
489.0
728
9.14
40.7
Robson/TW
595.8
302
0.80
20.3
17
2
558.4
831.3
10.44
46.4
678.2
344
0.85
21.6
17
2
635.7
946.3
11.88
52.8
McKinley/TW
761.5
386
0.90
22.9
17
2
713.7
1062.5
13.07
58.1
854.2
433
0.95
24.1
17
2
800.6
1191.8
14.86
66.1
Rainer/TW
918.8
465
1.00
25.4
31
3
861.2
1282
15.76
70.1
1020.0
517
1.05
26.7
31
3
956.0
1423.2
17.50
77.8
Helens/TW
1123.1
569
1.10
27.9
31
3
1052.7
1567.1
19.26
85.7
1234.2
625
1.15
29.2
31
3
1156.8
1722.1
21.17
94.2
Mazama/TW
1346.8
682
1.20
30.5
31
3
1262.3
1879.1
23.10
102.7
1467.9
744
1.25
31.8
31
3
1375.9
2048.2
24.65
109.6
Hood/TW
1583.2
802
1.30
33
34
3
1483.9
2209
26.59
118.3
1682.7
852
1.35
34.3
49
4
1577.5
2348.4
28.55
127
Whitney/TW
1812.7
918
1.40
35.6
49
4
1699.0
2529.2
30.74
136.7
1954.3
990
1.45
36.8
49
4
1832.1
2727.4
33.16
147.5
Powell/TW
2093.6
1061
1.50
38.1
49
4
1981.6
2949.9
35.51
157.9
2245.4
1137
1.55
39.4
49
4
2125.7
3164.4
37.30
165.9
Jefferson/TW
2388.1
1210
1.60
40.6
52
4
2260.3
3364.8
39.67
176.5
2514.8
1274
1.65
41.9
71
5
2379.5
3542.3
42.17
187.6
Shasta/TW
2667.2
1351
1.70
43.2
71
5
2524.5
3758.1
44.74
199
2844.5
1441
1.75
44.5
71
5
2692.2
4007.8
47.70
212.2
Adams/TW
3006.2
1523
1.80
45.7
71
5
2873.0
4276.9
50.43
224.3
A Code words shown in this column are obtained from “Publication 50, Code Words for Overhead Aluminum Electrical Conductors,” by the Aluminum Association. They are provided for information only.Note 2—The aluminum and temper designations conform to ANSI Standard H 35.1. Aluminum 1350 corresponds to Unified Numbering System (UNS) A91350 in accordance with Practice E527.