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
19.9
18.2
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
19.0
17.3
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
22.4
20.7
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
15.2
14.2
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
20.6
18.9
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
23.3
21.7
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
28.0
25.9
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
37.9
34.3
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
15.2
14.2
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
18.0
16.7
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
28.0
26.0
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
16.4
15.4
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
19.5
18.1
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
30.3
28.2
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
17.5
16.3
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
21.0
19.5
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
33.2
30.4
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
18.7
17.5
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
22.5
20.9
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
35.5
32.6
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
20.0
18.7
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
24.0
22.3
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
37.3
34.1
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
25.5
23.7
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
39.6
36.2
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
27.0
25.1
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
41.9
38.4
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
29.6
27.9
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
46.6
42.6
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
38.2
35.3
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
45.5
42.1
49.6
51.7
40.7
42.1
1.61
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
17.1
15.6
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
20.2
18.4
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
19.9
18.2
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
23.4
21.7
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
23.0
21.0
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
26.8
24.9
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
18.1
16.8
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
22.9
21.1
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
28.3
26.4
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
33.1
30.7
36.8
38.6
28.2
30.0
1.11
1080.0
7
. . .
900.0
45/7
20
2
7
0.1033
1211
20.4
18.9
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
18.3
17.2
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
22.1
20.5
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
33.5
31.1
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
20.0
18.7
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
23.8
22.1
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
36.3
33.2
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
21.5
20.2
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
25.7
23.9
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
39.1
35.8
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
23.1
21.6
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
27.1
25.6
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
42.0
38.4
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
24.6
23.1
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
29.0
27.3
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
45.0
41.2
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
30.9
29.1
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
49.3
45.0
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
32.8
30.9
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
50.8
46.4
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
36.5
34.3
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
56.4
51.6
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
45.5
42.1
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
55.6
51.3
60.6
63.1
49.7
51.3
1.76
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.