This specification covers shaped wire compact concentric-lay-stranded aluminum conductors, steel supported (ACSS/TW) for use as overhead electrical conductors. Electric-butt welds, cold-pressure welds, and electric-butt, cold upsed welds in the finished individual aluminum wires composing the conductor may be made during the stranding process. The electrical resistivity of the material shall meet the minimum resistivity specified. The rated strength of the completed conductor may be determined by mechanical tests. Mass and density of the conductors shall be determined.
Область применения1.1 This specification covers shaped wire compact concentric-lay-stranded aluminum conductors, steel supported (ACSS/TW) for use as overhead electrical conductors (see Explanatory Note 1).
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.2.1 Exceptions—For conductor sizes designated by AWG or kcmil sizes, the requirements in SI units are numerically converted from the corresponding requirements in inch-pound units. For conductor sizes designated by SI units only, the requirements are stated or derived in SI units. For density, resistivity, and temperature, the values stated in SI units are to be regarded as standard.
1.3 ACSS/TW is designed to increase the aluminum area for a given diameter of conductor by the use of trapezoidal shaped wires (TW), or to reduce the diameter for a given area of aluminum. The conductors consist of a central core of round steel wire(s) surrounded by two or more layers of trapezoidal aluminum 1350-0 wires. Different strandings of the same size of conductor are identified by type, which is the approximate ratio of steel area to aluminum area expressed in percent (see Table 1, Table 2, and Table 3). For the purpose of this specification, the sizes listed in Table 1 and Table 2 are tabulated on the basis of the finished conductor having an area or outside diameter equal to that of specified sizes of standard ACSR, ACSS, and ACSR/TW so as to facilitate conductor selection.
TABLE 1 Construction Requirements for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Coated Steel SupportedANote 1—Sized to have area equal aluminum cross-sectional area to an ACSR or ACSS, Class AA conductor.ACSS/TW
Conductor Size
Code WordB
Size and Stranding
of ACSS
with Equal Aluminum
Cross-Sectional Area
Aluminum
Stranding
Steel Core
Stranding
Nominal Mass
ACSS/TW
ACSS/TW Conductor Rated Strength
(by type of steel core wire)
Nominal
Outside
Diameter
kcmilC
Type
kcmil
Stranding
Number
of
Aluminum
Wires
Number
of
Layers
Number
of
Wires
Individual Strand Wire
Diameter,
in.
GAX Core
lb/1000 ft
†GA2 / MA2 KIPS
†GA3 / MA3 KIPS
GA4 / MA4 KIPS
GA5 / MA5 KIPS
AW2 KIPS
AW3
KIPS
in.
266.8
16
Partridge/ACSS/TW
266.8
26/7
18
2
7
0.0788
349
8.90
9.70
10.8
11.4
8.40
8.90
0.58
336.4
23
Oriole/ACSS/TW
336.4
30/7
17
2
7
0.1059
526
14.8
16.3
18.2
19.1
14.2
14.8
0.69
477.0
13
Flicker/ACSS/TW
477.0
24/7
18
2
7
0.0940
612
13.0
14.2
15.7
16.4
12.5
13.0
0.78
477.0
16
Hawk/ACSS/TW
477.0
26/7
18
2
7
0.1053
655
15.6
17.1
18.9
19.8
14.9
15.6
0.79
477.0
23
Hen/ACSS/TW
477.0
30/7
17
2
7
0.1261
746
21.0
22.7
25.4
26.7
20.1
20.5
0.83
556.5
13
Parakeet/ACSS/TW
556.5
24/7
18
2
7
0.1015
714
15.2
16.6
18.3
19.1
14.6
15.2
0.84
556.5
16
Dove/ACSS/TW
556.5
26/7
20
2
7
0.1138
764
18.2
19.9
22.1
23.1
17.5
18.2
0.85
636.0
13
Rook/ACSS/TW
636.0
24/7
18
2
7
0.1085
818
17.3
19.0
20.9
21.9
16.7
17.3
0.89
636.0
16
Grosbeak/ACSS/TW
636.0
26/7
20
2
7
0.1216
873
20.7
22.4
24.8
26.0
19.9
20.3
0.91
795.0
7
Tern/ACSS/TW
795.0
45/7
17
2
7
0.0886
891
14.2
15.2
16.6
17.5
13.5
14.2
0.96
795.0
10
Puffin/ACSS/TW
795.0
22/7
18
2
7
0.1108
974
18.9
20.6
22.6
23.7
18.3
18.9
0.98
795.0
13
Condor/ACSS/TW
795.0
54/7
20
2
7
0.1213
1020
21.7
23.3
25.7
26.9
20.9
21.3
0.99
795.0
16
Drake/ACSS/TW
795.0
26/7
20
2
7
0.1360
1091
25.9
28.0
31.0
32.5
24.4
25.4
1.01
795.0
23
Mallard/ACSS/TW
795.0
30/19
22
2
19
0.0977
1234
34.3
37.9
42.1
44.3
32.9
34.3
1.05
954.0
5
Phoenix/ACSS/TW
954.0
42/7
30
3
7
0.0837
1028
14.2
15.2
16.3
17.1
13.6
14.2
1.05
954.0
7
Rail/ACSS/TW
954.0
45/7
32
3
7
0.0971
1074
16.7
18.0
19.6
20.4
16.2
16.7
1.06
954.0
13
Cardinal/ACSS/TW
954.0
54/7
20
2
7
0.1329
1227
26.0
28.0
30.9
32.3
24.6
25.5
1.08
1033.5
5
Snowbird/ACSS/TW
1033.5
42/7
30
3
7
0.0871
1114
15.4
16.4
17.7
18.5
14.8
15.4
1.09
1033.5
7
Ortolan/ACSS/TW
1033.5
45/7
32
3
7
0.1010
1163
18.1
19.5
21.2
22.0
17.6
18.1
1.10
1033.5
13
Curlew/ACSS/TW
1033.5
54/7
21
2
7
0.1383
1326
28.2
30.3
33.4
35.0
26.1
27.7
1.13
1113.0
5
Avocet/ACSS/TW
1113.0
42/7
30
3
7
0.0904
1199
16.3
17.5
18.8
19.5
15.9
16.3
1.13
1113.0
7
Bluejay/ACSS/TW
1113.0
45/7
33
3
7
0.1049
1253
19.5
21.0
22.9
23.8
18.9
19.5
1.14
1113.0
13
Finch/ACSS/TW
1113.0
54/19
38
3
19
0.0862
1427
30.4
33.2
36.5
38.7
28.8
30.4
1.19
1192.5
5
Oxbird/ACSS/TW
1192.5
42/7
30
3
7
0.0936
1285
17.5
18.7
20.2
20.9
17.0
17.5
1.17
1192.5
7
Bunting/ACSS/TW
1192.5
45/7
33
3
7
0.1085
1342
20.9
22.5
24.5
25.5
20.3
20.9
1.18
1192.5
13
Grackle/ACSS/TW
1192.5
54/19
38
3
19
0.0892
1529
32.6
35.5
39.1
41.5
30.8
32.6
1.22
1272.0
5
Scissortail/ACSS/TW
1272.0
42/7
30
3
7
0.0967
1371
18.7
20.0
21.5
22.3
18.2
18.7
1.20
1272.0
7
Bittern/ACSS/TW
1272.0
45/7
35
3
7
0.1121
1432
22.3
24.0
26.1
27.2
21.6
22.3
1.22
1272.0
13
Pheasant/ACSS/TW
1272.0
54/19
39
3
19
0.0921
1630
34.1
37.3
41.1
43.0
32.8
34.1
1.26
1351.5
7
Dipper/ACSS/TW
1351.5
45/7
35
3
7
0.1155
1521
23.7
25.5
27.7
28.8
23.0
23.7
1.26
1351.5
13
Martin/ACSS/TW
1351.5
54/19
39
3
19
0.0949
1732
36.2
39.6
43.6
45.6
34.9
36.2
1.30
1431.0
7
Bobolink/ACSS/TW
1431.0
45/7
36
3
7
0.1189
1611
25.1
27.0
29.4
30.5
24.3
25.1
1.29
1431.0
13
Plover/ACSS/TW
1431.0
54/19
39
3
19
0.0977
1834
38.4
41.9
46.2
48.3
36.9
38.4
1.34
1590.0
7
Lapwing/ACSS/TW
1590.0
45/7
36
3
7
0.1253
1790
27.9
29.6
32.2
33.5
27.0
27.5
1.36
1590.0
13
Falcon/ACSS/TW
1590.0
54/19
42
3
19
0.1030
2038
42.6
46.6
51.3
53.7
41.1
42.6
1.41
1780.0
8
Chukar/ACSS/TW
1780.0
84/19
37
3
19
0.0874
2061
35.3
38.2
41.6
43.9
33.6
35.3
1.45
2156.0
8
Bluebird/ACSS/TW
2156.0
84/19
64
4
19
0.0961
2512
42.1
45.5
49.6
51.7
40.7
42.1
1.61
†Column editorially corrected.
A Conversion factors:ACSS/TW
Conductor Size
Code WordB
Size and
Stranding
of ACSS
with Equal
Overall
Conductor
Diameter
Aluminum
Stranding
Steel Core Stranding
Nominal Mass ACSS/TW
ACSS/TW Conductor Rated Strength
(by type of steel core wire)
Nominal Outside
Diameter
kcmilC
Type
kcmil
Stranding
Number
of
Aluminum
Wires
Number
of
Layers
Number of
Wires
Individual Strand Wire Diameter,
in.
GAX Core lb/1000 ft
†GA2/MA2
KIPS
†GA3/MA3
KIPS
GA4 / MA4
KIPS
GA5 / MA5
KIPS
AW2
KIPS
AW3
KIPS
in.
571.7
13
Mohawk/ACSS/TW
477.0
24/7
18
2
7
0.1030
734
15.6
17.1
18.8
19.7
15.0
15.6
0.85
565.3
16
Calumet/ACSS/TW
477.0
26/7
20
2
7
0.1146
776
18.4
20.2
22.4
23.5
17.7
18.4
0.86
666.6
13
Mystic/ACSS/TW
556.5
24/7
20
2
7
0.1111
856
18.2
19.9
21.9
22.9
17.5
18.2
0.91
664.8
16
Oswego/ACSS/TW
556.5
26/7
20
2
7
0.1244
913
21.7
23.4
26.0
27.2
20.9
21.3
0.93
768.2
13
Maumee/ACSS/TW
636.0
24/7
20
2
7
0.1195
987
21.0
23.0
25.3
26.5
20.2
21.0
0.98
762.8
16
Wabash/ACSS/TW
636.0
26/7
20
2
7
0.1331
1047
24.9
26.8
29.7
31.2
23.4
24.4
0.99
957.2
7
Kettle/ACSS/TW
795.0
45/7
32
3
7
0.0973
1078
16.8
18.1
19.7
20.4
16.3
16.8
1.06
946.7
10
Fraser/ACSS/TW
795.0
22/7
35
3
7
0.1154
1140
21.1
22.9
25.1
26.2
20.3
21.1
1.08
966.2
13
Columbia/ACSS/TW
795.0
54/7
21
2
7
0.1338
1240
26.4
28.3
31.3
32.8
24.9
25.9
1.09
959.6
16
Suwannee/ACSS/TW
795.0
26/7
22
2
7
0.1493
1317
30.7
33.1
36.8
38.6
28.2
30.0
1.11
1080.0
7
. . .
900.0
45/7
20
2
7
0.1033
1211
18.9
20.4
22.2
23.1
18.4
18.9
1.13
1168.1
5
Cheyenne/ACSS/TW
954.0
42/7
30
3
7
0.0926
1259
17.2
18.3
19.7
20.4
16.7
17.1
1.16
1158.0
7
Genesee/ACSS/TW
954.0
45/7
33
3
7
0.1078
1307
20.5
22.1
24.0
25.0
19.9
20.5
1.17
1158.4
13
Hudson/ACSS/TW
954.0
54/7
25
2
7
0.1467
1488
31.1
33.5
37.0
38.8
28.7
30.5
1.20
1272.0
5
Catawba/ACSS/TW
1033.5
42/7
30
3
7
0.0967
1371
18.7
20.0
21.5
22.3
18.2
18.7
1.20
1257.1
7
Nelson/ACSS/TW
1033.5
45/7
35
3
7
0.1115
1416
22.1
23.8
25.8
26.9
21.4
22.1
1.21
1233.6
13
Yukon/ACSS/TW
1033.5
54/7
38
3
19
0.0910
1584
33.2
36.3
40.0
41.9
32.0
33.2
1.25
1372.5
5
Truckee/ACSS/TW
1113.0
42/7
30
3
7
0.1004
1479
20.2
21.5
23.2
24.0
19.6
20.2
1.25
1359.7
7
Mackenzie/ACSS/TW
1113.0
45/7
36
3
7
0.1159
1531
23.9
25.7
27.9
29.0
23.1
23.8
1.26
1334.6
13
Thames/ACSS/TW
1113.0
54/19
39
3
19
0.0944
1711
35.8
39.1
43.1
45.1
34.5
35.8
1.29
1467.8
5
St. Croix/ACSS/TW
1192.5
42/7
33
3
7
0.1041
1583
21.6
23.1
24.9
25.8
21.0
21.6
1.29
1455.3
7
Miramichi/ACSS/TW
1192.5
45/7
36
3
7
0.1200
1639
25.6
27.1
29.5
30.7
24.8
25.2
1.30
1433.6
13
Merrimack/ACSS/TW
1192.5
54/19
39
3
19
0.0978
1838
38.4
42.0
46.3
48.4
37.0
38.4
1.34
1569.0
5
Platte/ACSS/TW
1272.0
42/7
33
3
7
0.1074
1691
23.1
24.6
26.5
27.5
22.4
23.1
1.33
1557.4
7
Potomac/ACSS/TW
1272.0
45/7
36
3
7
0.1241
1754
27.3
29.0
31.6
32.8
26.5
26.9
1.35
1533.3
13
Rio Grande/ACSS/TW
1272.0
54/19
39
3
19
0.1012
1966
41.2
45.0
49.6
51.9
39.6
41.2
1.38
1657.4
7
Schuylkill/ACSS/TW
1351.5
45/7
36
3
7
0.1280
1866
29.1
30.9
33.6
34.9
28.2
28.6
1.39
1622.0
13
Pecos/ACSS/TW
1351.5
54/19
39
3
19
0.1064
2105
45.0
49.3
54.3
56.9
43.3
45.0
1.42
1758.6
7
Pee Dee/ACSS/TW
1431.0
45/7
37
3
7
0.1319
1980
30.9
32.8
35.7
37.1
29.4
30.4
1.43
1730.6
13
James/ACSS/TW
1431.0
54/19
39
3
19
0.1075
2219
46.4
50.8
55.9
58.5
44.7
46.4
1.47
1949.6
7
Athabaska/ACSS/TW
1590.0
45/7
42
3
7
0.1392
2197
34.3
36.5
39.3
40.8
31.7
33.5
1.50
1926.9
13
Cumberland/ACSS/TW
1590.0
54/19
42
3
19
0.1133
2469
51.6
56.4
62.2
65.0
49.7
51.6
1.55
2153.8
8
Powder/ACSS/TW
1780.0
84/19
64
4
19
0.0961
2510
42.1
45.5
49.6
51.7
40.7
42.1
1.60
2627.3
8
Santee/ACSS/TW
2156.0
84/19
64
4
19
0.1062
3063
51.3
55.6
60.6
63.1
49.7
51.3
1.76
†Column editorially corrected.
A Conversion factors:ACSS/TW Type NumberC
Conventional ACSR and ACSS StrandingD
5
42/7
7
45/7
8
84/19
10
22/7
13
54/7
13
24/7
16
26/7
23
30/7
23
30/19
A The equivalent stranding is that stranding of conventional ACSR that has the same area of aluminum and steel as a given ACSS/TW type.B The equivalent stranding is that stranding of conventional ACSS that has the same area of aluminum and steel as a given ACSS/TW type.C ACSS/TW type number is the approximate ratio of the steel area to the aluminum area in percent.D See Specifications B549 and B856.