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The High Temperature, Low Sag

Aluminum Conductor Steel supportedACSS

Applications

Aluminum Conductor, Steel Supported (ACSS) are used for overhead distribution and transmission lines. They are especially useful in reconductoring applications requiring increased current with existing tensions and clearances; new line applications where


structures can be economized due to reduced sag; new line applications requiring high emergency loadings; lines where Aeolian vibration is a problem.

Features and advantages

ACSS conductors are similar to conventional ACSR with some very important additional advantages. ACSS can operate continuously at high temperatures (200°C) without damage; it sags less under emergency electrical loadings than ACSR; and its final sags are not affected by long time creep of the aluminum.


Hi Temp conductors provide distinct advantages for certain transmission line applications:• Operates continuously at high temperatures up to 200ºC with appropriate steel core coating vs. 100ºC for standard ACSR• Carries substantially more current than standard ACSR• Less susceptible to aeolian vibration fatigue due to the very low mechanical load on the annealed aluminum wire• Can be installed to the maximum tensions allowed by NESC• Minimum average conductivity of 63% IACS exceeds average conductivity of 61.2% for


EC 1350 H19 aluminum• Reduced sag allows for lower transmission tower height• Long term creep is not a factor

Structure

ACSS is a composite concentric-lay-stranded cable. The steel strands form the central core of the cable around which is stranded one or more layers of aluminum 1350-0 wires. The “O” temper of the aluminum, a fully annealed or soft temper, causes most or all of the


mechanical load on ACSS to be carried by the steel. The steel core may consist of 7, 19, 37 or more wires. They are protected from corrosion by galvanizing or aluminizing. Class A zinc coating is usually adequate for ordinary environments. For greater protection Class B and C galvanized or aluminized coatings may be specified. A special high strength steel core with Class A galvanizing is also available. Type MA, Mischmetal, coated steel core is also available.


Specification

Sim Noor Yazdan,s ACSS conductor meets or exceeds the following ASTM specifications:• B341 Aluminum-Coated Steel Core Wire for Aluminum Conductors, Steel Reinforced.• 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.• B856 Concentric-Lay-Stranded Aluminum Conductors, Coated Steel Supported (ACSS).The strandings available are identical to those listed in ASTM specification B232.

The High Temperature, Low Sag CodeWord

Size S (kcmil)

tranding(Al/St)

Diameter (mm) Weight (kg/km)

e

RatedStrength

Resistance A OHMS/1000 ft

ampacity at

200°C (AMPS)Individual Wires Steel C

CorecompleteCable

DC @20°C

AC @75°C

Al Steel Al Steel Total Standard Strength

kg

High* Strength

kg

Partridge/ACSS 266.8 26/7 2.57302 2.00152 6.00202 16.3068 376.95 173.25 550.2 4031.52 4417.42 0.20427 0.25113 812

The High Temperature, Low Sag Junco/ACSS 266.8 30/7 2.39522 2.39522 7.18566 16.764 377.85 248.25 626.1 5311.8 5902 0.20295 0.24948 822

Ostrich/ACSS 300.0 26/7 2.72796 2.1209 6.36524 17.272 423.9 194.85 618.6 4540 4948.6 0.18183 0.22341 877

Linnet/ACSS 336.4 26/7 2.88798 2.2479 6.74116 18.288 475.2 218.55 693.75 5084.8 5584.2 0.16203 0.19932 945

Oriole/ACSS 336.4 30/7 2.68986 2.68986 8.06958 18.8214 476.4 313.05 789.45 6719.2 7400.2 0.16104 0.198 957

Brant/ACSS 397.5 24/7 3.26898 2.17932 6.53796 19.6088 561.6 205.5 767.1 4994 5493.4 0.13761 0.16962 1047

Ibis/ACSS 397.5 26/7 3.13944 2.44348 7.3279 19.8882 561.6 258.15 819.75 5902 6446.8 0.13728 0.16896 1054

The High Temperature, Low Sag Lark/ACSS 397.5 30/7 2.92354 2.92354 8.77062 20.4724 562.95 369.75 932.85 7945 8762.2 0.13629 0.16764 1068

Flicker/ACSS 477 24/7 3.5814 2.3876 7.16026 21.4884 673.95 246.6 920.4 5902 6446.8 0.11484 0.14157 1180

Hawk/ACSS 477 26/7 3.43916 2.67462 8.0264 21.7932 673.95 309.75 983.7 7082.4 7763.4 0.11418 0.14091 1188

Hen/ACSS 477 30/7 3.20294 3.20294 9.60882 22.4282 675.6 443.85 1119.45 9534 10305.8 0.11352 0.13992 1204

Parakeet/ACSS 556.5 24/7 3.86842 2.5781 7.7343 23.2156 786.15 287.7 1073.85 6900.8 7536.4 0.09834 0.12144 1306

Dove/ACSS 556.5 26/7 3.71602 2.89052 8.66902 23.5458 786.3 361.35 1147.65 8262.8 9034.6 0.09801 0.12078 1315

The High Temperature, Low Sag Eagle/ACSS 556.5 30/7 3.45948 3.45948 10.37844 24.2062 788.1 517.8 1305.9 11123 12031 0.09735 0.11979 1331

Peacock/ACSS 605 24/7 4.03352 2.68732 8.0645 24.2062 854.7 312.75 1167.45 7491 8217.4 0.09042 0.11187 1379

Squab/ACSS 605 26/7 3.8735 3.01244 9.03986 24.5364 854.7 392.85 1247.7 8943.8 9670.2 0.09009 0.11121 1389

Wood Duck/ACSS 605 30/7 3.6068 3.6068 10.8204 25.2476 856.8 562.95 1419.75 11804 12848.2 0.08943 0.11022 1407

Teal/ACSS 605 30/19 3.6068 2.16408 10.8204 25.2476 856.8 551.1 1407.9 12076.4 13302.2 0.08976 0.11055 1406

Rook/ACSS 636 24/7 4.13512 2.7559 8.27024 24.8158 898.5 328.8 1227.3 7854.2 8626 0.08613 0.10626 1425

The High Temperature, Low Sag Grosbeak/ACSS 636 26/7 3.97256 3.08864 9.26846 25.1714 898.5 413.1 1311.6 9397.8 10169.6 0.0858 0.10593 1435

Scoter/ACSS 636 30/7 3.69824 3.69824 11.09472 25.8826 900.75 591.75 1492.5 12439.6 13483.8 0.08514 0.10494 1454

Egret/ACSS 636 30/19 3.69824 2.21996 11.09472 25.8826 900.75 579.45 1480.2 12712 14028.6 0.08514 0.10527 1453

Flamingo/ACSS 666.6 24/7 4.23418 2.82194 8.46582 25.4 941.85 344.55 1286.4 8262.8 9034.6 0.08217 0.10164 1470

Gannet/ACSS 666.6 26/7 4.06654 3.1623 9.48944 25.7556 941.7 432.9 1374.6 9851.8 10623.6 0.08184 0.10098 1480

Stilt/ACSS 715.5 24/7 4.38658 2.92354 8.77062 26.3144 1010.8 369.75 1380.75 8853 9670.2 0.07656 0.09471 1540

The High Temperature, Low Sag Starling/ACSS 715.5 26/7 4.21386 3.2766 9.83234 26.6954 1010.8 464.7 1475.55 10578.2 11440.8 0.07623 0.09438 1550

Redwing/ACSS 715.5 30/19 3.92176 2.35458 11.76782 27.4574 1013.4 651.9 1665.15 13983.2 15436 0.0759 0.09372 1570

Cuckoo/ACSS 795 24/7 4.6228 3.08102 9.2456 27.7368 1123.2 411 1534.05 9851.8 10578.2 0.06897 0.08547 1650

Drake/ACSS 795 26/7 4.44246 3.4544 10.3632 28.1178 1123.2 516.3 1639.5 11758.6 12712 0.06897 0.08481 1662

Macaw/ACSS 795 42/7 3.49504 1.94056 5.82422 26.797 1123.2 163.05 1286.25 5357.2 5720.4 0.06963 0.08646 1621

Tern/ACSS 795 45/7 3.37566 2.25044 6.75132 27.0002 1123.2 219.15 1342.35 6446.8 6900.8 0.0693 0.08679 1618

The High Temperature, Low Sag Condor/ACSS 795 54/7 3.08102 3.08102 9.2456 27.7368 1123.2 411 1534.05 9851.8 10578.2 0.06897 0.08778 1618

Mallard/ACSS 795 30/19 4.13512 2.48158 12.40536 28.9306 1125.9 724.2 1850.1 15572.2 17206.6 0.06831 0.08415 1683

Ruddy/ACSS 900 45/7 3.59156 2.39522 7.18312 28.7274 1271.5 248.1 1519.65 7173.2 7718 0.06138 0.07689 1755

Canary/ACSS 900 54/7 3.27914 3.27914 9.83742 29.5148 1271.5 465.15 1736.7 11168.4 11985.6 0.06072 0.07788 1756

The High Temperature, Low Sag Redbird/ACSS 954 24/7 5.06476 3.37566 10.12698 30.3784 1347.75 8348.98 31173.42 11804 12712 0.05742 0.07161 1859

Rail/ACSS 954 45/7 3.69824 2.46634 7.39648 29.591 1347.75 4452.62 27277.06 7581.8 8172 0.05775 0.0726 1824

Towhee/ACSS 954 48/7 3.5814 2.78638 8.3566 29.845 1347.75 5681.98 28506.42 8943.8 9670.2 0.05775 0.07194 1842

Cardinal/ACSS 954 54/7 3.37566 3.37566 10.12698 30.3784 1347.9 8348.98 31173.42 11804 12712 0.05742 0.07359 1825

The High Temperature, Low Sag Canvasback/ACSS 954 30/19 4.52882 2.7178 13.589 31.6992 1351.05 14716.76 37594.54 18659.4 20611.6 0.05676 0.07062 1897

Snowbird/ACSS 1033.5 42/7 3.98526 2.21234 6.63956 30.5562 1460.1 3589.02 28313.38 6991.6 7491 0.05346 0.06732 1924

Ortolan/ACSS 1033.5 45/7 3.8481 2.5654 7.69874 30.7848 1460.1 4826 29550.36 8217.4 8853 0.05346 0.06732 1921

Curlew/ACSS 1033.5 54/7 3.51282 3.51282 10.541 31.623 1460.1 9047.48 33771.84 12802.8 13756.2 0.05313 0.06798 1924

Bluejay/ACSS 1113 45/7 3.99542 2.66192 7.9883 31.9532 1572.45 5194.3 31821.12 8853 9579.4 0.0495 0.0627 2017

Finch/ACSS 1113 54/19 3.64744 2.18694 10.93978 32.8168 1580.1 9537.7 36294.06 13801.6 15072.8 0.0495 0.06369 2015

The High Temperature, Low Sag Bunting/ACSS 1192.5 45/7 4.13512 2.7559 8.27024 33.0708 1684.8 5567.68 34096.96 9715.6 10669 0.0462 0.05874 2110

Bittern/ACSS 1272 45/7 4.26974 2.84734 8.53948 34.163 1797.15 5938.52 36370.26 10124.2 10896 0.04323 0.05511 2200

Pheasant/ACSS 1272 54/19 3.8989 2.33934 11.69416 35.0774 1805.85 10901.68 41478.2 15481.4 16934.2 0.04323 0.05577 2200

Dipper/ACSS 1351 45/7 4.40182 2.9337 8.8011 35.2044 1908.75 6306.82 38628.32 10759.8 11577 0.04092 0.05214 2289

Martin/ACSS 1351 54/19 4.01828 2.41046 12.0523 36.1696 1918.05 11577.32 44056.3 16434.8 17978.4 0.04059 0.0528 2288

Bobolink/ACSS 1431 45/7 4.52882 3.02006 9.05764 36.2458 2021.7 6680.2 40914.32 11395.4 12258 0.03861 0.0495 2375

The High Temperature, Low Sag Plover/ACSS 1431 54/19 4.13512 2.48158 12.40536 37.211 2031.6 12263.12 46664.88 17433.6 19022.6 0.03861 0.04983 2375

Nuthatch/ACSS 1510 45/7 4.65328 3.10134 9.30656 37.211 2133.3 7048.5 43174.92 12031 12757.4 0.03663 0.04719 2459

Parrot/ACSS 1510 54/19 4.24688 2.54762 12.74318 38.227 2143.8 12941.3 49240.44 18341.6 20066.8 0.0363 0.04752 2460

Ratite/ACSS 1590 42/7 4.94284 2.74574 8.23722 37.8968 2246.4 5521.96 43561 10623.6 11350 0.03465 0.04488 2543

Lapwing/ACSS 1590 45/7 4.7752 3.18262 9.54786 38.2016 2246.4 7421.88 45460.92 12666.6 13438.4 0.03465 0.04488 2543

Falcon/ACSS 1590 54/19 4.35864 2.6162 13.07592 39.2176 2257.35 13627.1 51851.56 19340.4 21156.4 0.03465 0.04521 2545

The High Temperature, Low Sag Chukar/ACSS 1780 84/19 3.69824 2.21742 11.09218 40.6654 2527.05 9806.94 52598.32 16071.6 17342.8 0.03102 0.04026 2751

Mockingbird/ACSS 2034.5 72/7 4.26974 2.84734 8.53948 42.6974 2888.4 5935.98 54846.22 12348.8 13120.6 0.02739 0.0363 2960

Roadrunner/ACSS 2057 76/19 4.1783 1.95072 9.75106 43.18 2920.35 7576.82 57028.08 14391.8 15390.6 0.02706 0.03564 2992

Bluebird/ACSS 2156 84/19 4.06908 2.44094 12.20724 44.7548 3060.9 11877.04 63708.28 19113.4 20657 0.02574 0.03399 3106

Kiwi/ACSS 2167 72/7 4.4069 2.93878 8.8138 44.069 3076.5 6322.06 58417.46 13166 13983.2 0.02574 0.03432 3080

Thrasher/ACSS 2312 76/19 4.42976 2.06756 10.3378 45.7708 3282.3 8516.62 64096.9 16162.4 17297.4 0.02409 0.03234 3218

The High Temperature, Low Sag Joree/ACSS 2515 76/19 4.62026 2.15646 10.7823 47.752 3570.6 9263.38 69725.54 17569.8 18795.6 0.02211 0.03036 3390

The High Temperature, Low Sag Notes:

(1) Data based on a nominal cable manufactured in accordance with ASTM B 856.(2) Resistance and ampacity based on an aluminum conductivity of 63%, IACS at 20°C, and a steel conductivity of 8% IACS at 20°C. (3) Ampacity based on a 200°C conductor temperature, 25°C ambient temperature, 2 ft/sec. wind, in sun, with an emissivity

of 0.5 and a coefficient of solar absorption of 0.5, at sea level.(4) Rated strength for standard strength core based on Class A Galfan coated steel core wire in accordance with ASTM B 802.(5) Rated strength for high strength core based on Class A Galfan coated high strength steel core wire in accordance with B 803.* Designated by "/HS" (e.g. Drake/ACSS/HS)

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