ACSS – Aluminum Conductor Steel Supported

Product Description

ACSS is a concentric-lay stranded composite conductor made up of a core of galvanized steel strands and one or more layers of annealed or soft 1350-0 Aluminum. The steel core wire is Class A galvanized zinc-coated steel which, due to the annealed or soft temper Aluminum, carries most or all of the mechanical load of the conductor. Upon request the steel core is available in High strength.

Application

Aluminum conductor steel supported (ACSS) cable is used for overhead transmission lines. ACSS is designed to operate continuously at higher temperatures up to 250ᵒC without loss of strength, which allows for a significant increase in current carrying capacity over ACSR. ACSS is self-damping, sags less than ACSR under emergency electrical loadings, and its final sags are not affected by the long term creep of aluminum. These advantages make ACSS useful in new line applications where structures can be optimized due to the reduced conductor sag or where high emergency loads may be required; or in lines where Aeolian vibration is a problem. Existing lines can be re-conductored using ACSS to allow for increased current using the existing clearances and tensions.

Specification Data

ASTM B-609 Aluminum 1350 round wire, annealed and intermediate tempers, for electrical purposes
ASTM B-498 Zinc-coated (galvanized) steel core wire
ASTM B-856 Concentric lay stranded aluminum conductors, coated steel supported (ACSS)

Product Data

Code Word Size (kcmil) Stranding (Al/St) Diameter (ins.) Weight Per 1000 ft (lb.) Standard Rated Strength Resistance OHMS/1000ft Ampacity at 200°C (AMPS)
Individual Wires Steel Core Complete Cable
AL Steel Al Steel Total DC @20°c AC @75°C
Partridge/ACSS 266.8 26/7 .1013 .0788 .2363 .642 251.3 115.5 366.8 8880 .0619 .0761 812
Junco/ACSS 266.8 30/7 .0943 .0943 .2829 .660 251.9 165.5 417.4 11700 .0615 .0756 822
Ostrich/ACSS 300.0 26/7 .1074 .0835 .2506 .680 282.6 129.9 412.4 10000 .0551 .0677 877
Linnet/ACSS 336.4 26/7 .1137 .0885 .2654 .720 316.8 145.7 462.5 11200 .0491 .0604 945
Oriole/ACSS 336.4 30/7 .1059 .1059 .3177 .741 317.6 208.7 526.3 14800 .0488 .0600 957
Brant/ACSS 397.5 24/7 .1287 .0858 .2574 .772 374.4 137.0 511.4 11000 .0417 .0514 1047
Ibis/ACSS 397.5 26/7 .1236 .0962 .2885 .783 374.4 172.1 546.5 13000 .0416 .0512 1054
Lark/ACSS 397.5 30/7 .1151 .1151 .3453 .806 375.3 246.5 621.9 17500 .0413 .0508 1068
Flicker/ACSS 477 24/7 .1410 .0940 .2819 .846 449.3 164.4 613.6 13000 0.348 0429 1180
Hawk/ACSS 477 26/7 .1354 .1053 .3160 .858 449.3 206.5 655.8 15600 .0346 .0427 1188
Hen/ACSS 477 30/7 .1261 .1261 .3783 .883 450.4 295.9 746.3 21000 .0344 .0424 1204
Parakeet/ACSS 556.5 24/7 .1523 .1015 .3045 .914 524.1 191.8 715.9 15200 .0298 .0368 1306
Dove/ACSS 556.5 26/7 .1463 .1138 .3413 .927 524.2 240.9 765.1 18200 .0297 .0366 1315
Eagle/ACSS 556.5 30/7 .1362 .1362 .4086 .953 525.4 345.2 870.6 24500 .0295 .0363 1331
Peacock/ACSS 605 24/7 .1588 .1058 .3175 .953 569.8 205.5 778.3 16500 .0274 .0339 1379
Squab/ACSS 605 26/7 .1525 .1186 .3559 .966 569.8 208.5 831.8 19700 .0273 .0337 1389
Wood Duck/ACSS 605 30/7 .1420 .1420 .4260 .994 571.2 375.3 946.5 26000 .0271 .0334 1407
Teal/ACSS 605 30/19 .1420 .0852 .4260 .994 571.2 367.4 938.6 26600 .0272 .0335 1406
Rook/ACSS 636 24/7 .1628 .1085 .3256 .977 599.0 219.2 818.2 17300 .0261 .0322 1425
Grosbeak/ACSS 636 26/7 .1564 .1216 .3649 .991 599.0 275.4 874.4 20700 .0260 .0321 1435
Scoter/ACSS 636 30/7 .1456 .1456 .4368 1.019 600.5 394.5 995.0 27400 .0258 .0318 1454
Egret/ACSS 636 30/19 .1456 .0874 .4368 1.019 600.5 386.3 986.8 28000 .0258 .0319 1453
Flamingo/ACSS 666.6 24/7 .1667 .1111 .3333 1.000 627.9 229.7 857.6 18200 .0249 .0308 1470
Gannet/ACSS 666.6 26/7 .1601 .1245 .3736 1.014 627.8 288.6 916.4 21700 .0248 .0306 1480
Stilt/ACSS 715.5 24/7 .1727 .1151 .3453 1.036 673.9 246.5 920.5 19500 .0232 .0287 1540
Starling/ACSS 715.5 26/7 .1659 .1290 .3871 1.051 673.9 309.8 983.7 23300 .0231 .0286 1550
Redwing/ACSS 715.5 30/19 .1544 .0927 .4633 1.081 675.6 434.6 1110.1 30800 .0230 .0284 1570
Cuckoo/ACSS 795 24/7 .1820 .1213 .3640 1.092 748.8 274.0 1022.7 21700 .0209 .0259 1650
Drake/ACSS 795 26/7 .1749 .1360 .4080 1.107 748.8 344.2 1093.0 25900 .0209 .0257 1662
Macaw/ACSS 795 42/7 .1376 .0764 .2293 1.055 748.8 108.7 857.5 11800 .0211 .0262 1621
Tern/ACSS 795 45/7 .1329 .0886 .2658 1.063 748.8 146.1 894.9 14200 .0210 .0263 1618
Condor/ACSS 795 54/7 .1213 .1213 .3640 1.092 748.8 274.0 1022.7 21700 .0209 .0266 1618
Mallard/ACSS 795 30/19 .1628 .0977 .4884 1.139 750.6 482.8 1233.4 34300 .0207 .0255 1683
Ruddy/ACSS 900 45/7 .1414 .0943 .2828 1.131 847.7 165.4 1013.1 15800 .0186 .0233 1755
Canary/ACSS 900 54/7 .1291 .1291 .3873 1.162 847.7 310.1 1157.8 26400 .0184 .0236 1756
Redbird/ACSS 954 24/7 .1994 .1329 .3987 1.196 898.5 328.7 1227.3 26000 .0174 .0217 1859
Rail/ACSS 954 45/7 .1456 .0971 .2912 1.165 898.5 175.3 1073.9 16700 .0175 .0220 1824
Towhee/ACSS 954 48/7 .1410 .1097 .329 1.175 898.5 223.7 1122.3 19700 .0175 .0218 1842
Cardinal/ACSS 954 54/7 .1329 .1329 .3987 1.196 898.6 328.7 1227.3 26000 .0174 .0223 1825
Canvasback/ACSS 954 30/19 .1783 .1070 .5350 1.248 900.7 579.4 1480.1 41100 .0172 .0214 1897
Snowbird/ACSS 1033.5 42/7 .1569 .0871 .2614 1.203 973.4 141.3 1114.7 15400 .0162 .0204 1924
Ortolan/ACSS 1033.5 45/7 .1515 .1010 .3031 1.212 973.4 190.0 1163.4 18100 .0162 .0204 1921
Curfew/ACSS 1033.5 54/7 .1383 .1383 .4150 1.245 973.4 356.2 1329.6 28200 .0161 .0206 1924
Bluejay/ACSS 1113 45/7 .1573 .1048 .3145 1.258 1048.3 204.5 1252.8 19500 .0150 .0190 2017
Finch/ACSS 1113 54/19 .1436 .0861 .4307 1.292 1053.4 375.5 1428.9 30400 .0150 .0193 2015
Bunting/ACSS 1192.5 45/7 .1628 .1085 .3256 1.302 1123.2 219.2 1342.4 21400 .0140 .0178 2110
Bittern/ACSS 1272 45/7 .1681 .1121 .3362 1.345 1198.1 233.8 1431.9 22300 .0131 .0167 2200
Pheasant/ACSS 1272 54/19 .1535 .0921 .4604 1.381 1203.9 429.2 1633.0 34100 .0131 .0169 2200
Dipper/ACSS 1351 45/7 .1733 .1155 .3465 1.386 1272.5 248.3 1520.8 23700 .0124 .0158 2289
Martin/ACSS 1351 54/19 .1582 .0949 .4745 1.424 1278.7 455.8 1734.5 36200 .0123 .0160 2288
Bobolink/ACSS 1431 45/7 .1783 .1189 .3566 1.427 1347.8 263.0 1610.8 25100 .0117 .0150 2375
Plover/ACSS 1431 54/19 .1628 .0977 .4884 1.465 1354.4 482.8 1837.2 38400 .0117 .0151 2375
Nuthatch/ACSS 1510 45/7 .1832 .1221 .3664 1.465 1422.2 277.5 1699.8 26500 .0111 .0143 2459
Parrot/ACSS 1510 54/19 .1672 .1003 .5017 1.505 1429.2 509.5 1938.6 40400 .0110 .0144 2460
Ratite/ACSS 1590 42/7 .1946 .1081 .3243 1.492 1497.6 217.4 1715.0 23400 .0105 .0136 2543
Lapwing/ACSS 1590 45/7 .1880 .1253 .3759 1.504 1497.6 292.2 1789.8 27900 .0105 .0136 2543
Falcon/ACSS 1590 54/19 .1716 .1030 .5148 1.544 1504.9 536.5 2041.4 42600 .0105 .0137 2545
Chukar/ACSS 1780 84/19 .1456 .0873 .4367 1.601 1684.7 386.1 2070.8 35400 .0094 .0122 2751
Mockingbird/ACSS 2034.5 72/7 .1681 1.1121 .3362 1.681 1925.6 233.7 2159.3 27200 .0083 .0110 2960
Roadrunner/ACSS 2057 76/19 .1645 .0768 .3839 1.700 1946.9 298.3 2245.2 31700 .0082 .0108 2992
Bluebird/ACSS 2156 84/19 .1602 .0961 .4806 1.762 2040.6 467.6 2508.2 42100 .0078 .0103 3106
Kiwi/ACSS 2167 72/7 .1735 .1157 .3470 1.735 2051.0 248.9 2299.9 29000 .0078 .0104 3080
Thrasher/ACSS 2312 76/19 .1744 .0814 .4070 1.802 2188.2 335.3 2523.5 35600 .0073 .0098 3218
Joree/ACSS 2515 76/19 .1819 .0849 .4245 1.880 2380.4 364.7 2745.1 38700 .0067 .0092 3390

+Data based on a nominal cable manufactured in accordance with ASTM B-856.
++Resistance and ampacity based on an aluminum conductivity of 63%, IACS at 20° C, and a steel conductivity of 8% IACS at 20°C.
+++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.
*Manufactured with pride in DeKalb, IL USA.

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