Acss/Tw, Aluminium Conductors Steel Supported (ASTM B 857)

Acss/Tw, Aluminium Conductors Steel Supported (ASTM B 857)

Acss/Tw, Aluminium Conductors Steel Supported (ASTM B 857)

ACSS/TW

Overhead

Super-high Voltage Cable

DC Cable

Bare

Bare

Round Wire

Aluminum 1350/Galvanized Steel Wire

ISO, CCC

Acss/Tw

Boan

ASTM B 857

25-83

477.0-2156 AWG or Kcmil

DingAn

Heated Steel-Wooden Drum/Wooden Drum

SGS

Jiangsu Yixing, China

76141000

Product Description

ACSS/TW, Aluminium Conductors Steel Supported (ASTM B 857)

Construction
ACSS/TW, a nonhomogeneous conductor, is a trapezoidal shaped wire compact concentriclay- stranded conductor made from aluminum 1350-O wires and round, coated steel core wire(s). ACSS/TW conductors withequal area or equal diameter as compared to ACSS conductors are available for overhead lines. Steel wires are coated with Class A coating of zinc – 5% aluminum mischmetal alloy. Other Classes of coatings are also available for additional protection from corrosion. Standard, High, Extra and Ultra High Strength steel are also available.

Specifications
ACSS/TW conductors are manufactured in accordance with the ASTM specification B857.

Features
ACSS conductors are preferred over ACSR conductors for specific transmission line
applications:
With zinc – 5% aluminum mischmetal alloy coating on steel wires, ACSS conductors can be operated
up to 250 °C.
ACSS conductors carry more current than ACSR conductors due to:
— Minimum average conductivity of 63% IACS for 1350-O aluminum wires vs. an average conductivity of 61.2% for 1350-H19 aluminum wires in ACSR.

— ACSS conductors can be operated up to 250 °C vs. the maximum operating temperature for an ACSR conductor does not exceed 100 °C.

ACSS conductors are prone to resist the effects of aeolian vibration due to very little or no mechanical load on the annealed aluminum wires.

Long term creep is not a factor when designing with ACSS conductors. In addition, use of ACSS/TW with the equal area design allows equal ampacity in a conductor with approximately 10% smaller diameter over a standard ACSS with same area. This smaller diameter of equal area ACSS/TW conductors helps reduce the effects of ice and wind loading on the conductor.

Alternatively, use of ACSS/TW with equal diameter design provides a conductor in which the aluminum area is increased by approximately 20% – 25% over a standard ACSS with same diameter. This increase
in the cross-sectional area of the conductor reduces its ac resistance by about 15% – 20% and thus, increases its current carrying capacity by about 10%.

Code Size Type Stranding Nominal Overall Diameter Cross Section
Aluminum Steel
AWG or kcmil No. Al Wires No. Al Layers No. of Wires Diameter CDR Steel Core Al Total
in in in2
Flicker/ACSS/TW 477.0 13 18 2 7 0.0940 0.78 0.2820 0.3748 0.4234
Hawk/ACSS/TW 477.0 16 18 2 7 0.1053 0.79 0.3159 0.3745 0.4355
Parakeet/ACSS/TW 556.5 13 18 2 7 0.1015 0.84 0.3045 0.4372 0.4938
Dove/ACSS/TW 556.5 16 20 2 7 0.1138 0.85 0.3414 0.4371 0.5083
Rook/ACSS/TW 636.0 13 18 2 7 0.1085 0.89 0.3255 0.4994 0.5641
Grosbeak/ACSS/TW 636.0 16 20 2 7 0.1216 0.91 0.3648 0.4996 0.5809
Tern/ACSS/TW 795.0 7 17 2 7 0.0888 0.96 0.2664 0.6247 0.6680
Puffin/ACSS/TW 795.0 11 21 2 7 0.1108 0.98 0.3324 0.6241 0.6916
Condor/ACSS/TW 795.0 13 21 2 7 0.1213 0.99 0.3639 0.6242 0.7051
Drake/ACSS/TW 795.0 16 20 2 7 0.1360 1.01 0.4080 0.6242 0.7259
Phoenix/ACSS/TW 954.0 5 30 3 7 0.0837 1.04 0.2511 0.7497 0.7882
Rail/ACSS/TW 954.0 7 32 3 7 0.0971 1.06 0.2913 0.7493 0.8011
Cardinal/ACSS/TW 954.0 13 21 2 7 0.1329 1.08 0.3987 0.7492 0.8463
Snowbird/ACSS/TW 1033.5 5 30 3 7 0.0871 1.09 0.2613 0.8115 0.8532
Ortolan/ACSS/TW 1033.5 7 33 3 7 0.1010 1.10 0.3030 0.8112 0.8673
Curlew/ACSS/TW 1033.5 13 21 2 7 0.1383 1.13 0.4149 0.8118 0.9170
Avocet/ACSS/TW 1113.0 5 30 3 7 0.0904 1.13 0.2712 0.8737 0.9186
Bluejay/ACSS/TW 1113.0 7 33 3 7 0.1049 1.14 0.3147 0.8746 0.9351
Finch/ACSS/TW 1113.0 13 39 3 19 0.0862 1.18 0.4310 0.8737 0.9845
Oxbird/ACSS/TW 1192.5 5 30 3 7 0.0936 1.17 0.2808 0.9361 0.9843
Bunting/ACSS/TW 1192.5 7 33 3 7 0.1086 1.18 0.3258 0.9368 1.0016
Grackle/ACSS/TW 1192.5 13 39 3 19 0.0892 1.22 0.4460 0.9369 1.0556
Scissortail/ACSS/TW 1272.0 5 30 3 7 0.0967 1.20 0.2901 0.9994 1.0508
Bittern/ACSS/TW 1272.0 7 33 3 7 0.1121 1.22 0.3363 0.9994 1.0685
Pheasant/ACSS/TW 1272.0 13 39 3 19 0.0921 1.26 0.4605 0.9987 1.1252
Dipper/ACSS/TW 1351.5 7 33 3 7 0.1155 1.25 0.3465 1.0616 1.1350
Martin/ACSS/TW 1351.5 13 39 3 19 0.0949 1.30 0.4745 1.0610 1.1954
Bobolink/ACSS/TW 1431.0 7 33 3 7 0.1189 1.29 0.3567 1.1243 1.2020
Plover/ACSS/TW 1431.0 13 39 3 19 0.0977 1.33 0.4885 1.1242 1.2666
Lapwing/ACSS/TW 1590.0 7 36 3 7 0.1253 1.36 0.3759 1.2488 1.3351
Falcon/ACSS/TW 1590.0 13 39 3 19 0.1030 1.40 0.5150 1.2483 1.4066
Chukar/ACSS/TW 1780.0 8 38 3 19 0.0874 1.45 0.4370 1.3982 1.5122
Bluebird/ACSS/TW* 2156.0 8 64 4 19 0.0961 1.61 0.4805 1.6934 1.8312
Mohawk/ACSS/TW 571.7 13 18 2 7 0.103 0.846 0.309 0.4489 0.5072
Calumet/ACSS/TW 565.3 16 20 2 7 0.1146 0.858 0.3438 0.4438 0.5161
Mystic/ACSS/TW 666.6 13 20 2 7 0.1111 0.913 0.3333 0.5236 0.5915
Oswego/ACSS/TW 664.8 16 20 2 7 0.1244 0.927 0.3732 0.5222 0.6073
Maumee/ACSS/TW 768.2 13 20 2 7 0.1195 0.977 0.3585 0.6032 0.6817
Wabash/ACSS/TW 762.8 16 20 2 7 0.1331 0.99 0.3993 0.5989 0.6963
Kettle/ACSS/TW 957.2 7 32 3 7 0.0973 1.06 0.2919 0.7518 0.8038
Suwannee/ACSS/TW 959.6 16 22 2 7 0.1493 1.108 0.4479 0.7539 0.8764
Cheyenne/ACSS/TW 1168.1 5 30 3 7 0.0926 1.155 0.2778 0.917 0.9642
Genesee/ACSS/TW 1158.0 7 33 3 7 0.1078 1.165 0.3234 0.9094 0.9732
Hudson/ACSS/TW 1158.4 13 26 2 7 0.1467 1.196 0.4401 0.9096 1.0279
Catawba/ACSS/TW 1272.0 5 30 3 7 0.0967 1.203 0.2901 0.9993 1.0507
Nelson/ACSS/TW 1257.1 7 35 3 7 0.1115 1.213 0.3345 0.9875 1.0558
Yukon/ACSS/TW 1233.6 13 38 3 19 0.091 1.25 0.455 0.9685 1.0921
Truckee/ACSS/TW 1372.5 5 30 3 7 0.1004 1.248 0.3012 1.0783 1.1337
Mackenzie/ACSS/TW 1359.7 7 36 3 7 0.1159 1.259 0.3477 1.0674 1.1413
Thames/ACSS/TW 1334.6 13 39 3 19 0.0944 1.29 0.472 1.0479 1.1808
St.Croix/ACSS/TW 1467.8 5 30 3 7 0.1041 1.292 0.3123 1.1532 1.2127
Miramichi/ACSS/TW 1455.3 7 36 3 7 0.12 1.299 0.36 1.1427 1.2219
Merrimack/ACSS/TW 1433.6 13 39 3 19 0.0978 1.34 0.489 1.1255 1.2682
Platte/ACSS/TW 1569.0 5 33 3 7 0.1074 1.334 0.3222 1.2328 1.2962
Potomac/ACSS/TW 1557.4 7 36 3 7 0.1241 1.345 0.3723 1.2237 1.3084
Rio Grande/ACSS/TW 1533.3 13 39 3 19 0.1012 1.379 0.506 1.2046 1.3574
Schuylkill/ACSS/TW 1657.4 7 36 3 7 0.128 1.386 0.384 1.3012 1.3912
Pecos/ACSS/TW 1622.0 13 39 3 19 0.1064 1.424 0.532 1.2736 1.4425
Pee Dee/ACSS/TW 1758.6 7 37 3 7 0.1319 1.431 0.3957 1.3811 1.4768
James/ACSS/TW 1730.6 13 39 3 19 0.1075 1.47 0.5375 1.3598 1.5322
Athabaska/ACSS/TW 1949.6 7 42 3 7 0.1392 1.504 0.4176 1.5318 1.6384
Cumberland/ACSS/TW 1926.9 13 42 3 19 0.1133 1.545 0.5665 1.5129 1.7044
Santee/ACSS/TW* 2627.3 8 64 4 19 0.1062 1.762 0.531 2.0645 2.2328

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