Bare Overhead Conductors AAC, ACSR, ACSR II

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1Bare Overhead ConductorsNexans is a diversified wire and cable manufacturer. Nexans has been designing, manufacturing and delivering cables to customers in North America since 1911. Major utilities, distributors and contractors recognize Nexans as a quality supplier and a technology leader. Substantial investment in research and development of product and process technologies continuously reinforces our commitment to excellence.

Nexans offers a combination of sales, design, manufacturing and quality control which ensures that all relevant standards of design and service are met. With our multi-plant manufacturing base, we are able to produce all standard types and sizes of bare overhead conductors, as well as a wide range of non-standard conductors, for virtually every application.

Applications

The bare overhead conductors described in this brochure are suitable for installation in all practical spans on transmission towers, wood poles and other structures. Installations range from long-distance EHV transmission lines to sub-service spans at distribution or utilization voltages on private premises.

The choice of conductor size, type and strength should take into account factors such as electrical load, voltage regulation, corona losses, ice and wind loading, extreme temperatures and vibration. Nexans is prepared to assist in the evaluation of these factors as they relate to the design of a transmission or distribution line.

Specifications

Nexans bare overhead conductors are designed, manufactured and tested in accordance with the following specifications:

ASTM B 231 Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors

ASTM B 232 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR)

Packaging is provided as per Aluminum Association Packaging Standards for Aluminum Conductor and ACSR, Sixth Edition

AAC Bare Overhead Conductor

Product ConstructionBare all aluminum conductors (AAC) are concentric-lay-stranded consisting of one or more layers of aluminum alloy 1350 wires wrapped helically around a central wire. Each successive layer has six wires more than the underlying one. Increasing the number of wires for any given cross-sectional area provides greater flexibility. The most commonly used strandings consist of 7, 19, 37, 61 and 91 wires.Class AA strandings are used for bare overhead lines. The direction of lay for the outer layer is right-hand and is usually reversed in successive layers. The temper of the wires is full hard-drawn (H19).Class A strandings are used primarily for overhead conductors that are to be covered. They have greater flexibility than Class AA. The outermost layer is right-hand lay and the temper is normally H19. Successive layers are reverse lay.

Features and BenefitsAAC conductors are the most economical since their lighter weight means lower unit length costs, easier handling during installation and the use of simpler fittings. They are inherently corrosion resistant due to their homogeneous construction.

ApplicationsStranded bare AAC conductors may be used in overhead line installations where the design parameters do not require the higher tensile strength or temperature ratings provided by ACSR, ACCR or other types of conductors.

ACSR Bare Overhead Conductor

Product ConstructionACSR is a composite concentric-lay stranded conductor consisting of a central steel core around which are stranded one or more layers of aluminum alloy 1350-H19 wires. The steel core may consist of a single wire, 7, 19, 37 or more concentrically stranded wires. They are normally protected against corrosion by the application of zinc coating. The standard Class A coating is usually adequate for ordinary environments. Heavier Class B or C coatings may be specified for greater protection. A special high-strength steel core with a Class A coating is also available.There are numerous combinations of aluminum and steel wires and layers that are available. The sizes and strandings most frequently used for overhead lines are listed on the following pages.

Features and BenefitsACSR conductors have a long service record due to their economy, dependability and favourable strength to weight ratio. Such conductors combine the lightweight and high conductivity of the aluminum wires with the tensile strength and ruggedness of the steel core. For overhead line design, this enables higher tensions to be used with less conductor sag and longer spans than would be possible with most other types of conductors.

ApplicationsAluminum conductors, steel reinforced (ACSR) are widely used for overhead transmission and distribution lines.

2Physical Data for Aluminum 1350 Conductors

Diameter (inch) Rated Size No. of Individual Complete Weight StrengthCodeword (AWG/kcmil) Wires Wires Conductor (lb/kft) (Ibf)

Peachbell 6 7 0.0612 0.184 24.6 563Rose 4 7 0.0772 0.232 39.1 881Iris 2 7 0.0974 0.292 62.2 1350Pansy 1 7 0.1093 0.328 78.4 1640Poppy 1/0 7 0.1228 0.368 98.9 1990Aster 2/0 7 0.1379 0.414 124.8 2510Phlox 3/0 7 0.1548 0.464 157.2 30400xlip 4/0 7 0.1739 0.522 198.4 3830Daisy 266.8 7 0.1952 0.586 250.2 4830Laurel 266.8 19 0.1185 0.593 250.1 4970Tulip 336.4 19 0.1331 0.666 315.5 6150Cosmos 477 19 0.1584 0.792 446.8 8360Syringa 477 37 0.1135 0.795 446.8 8690Zinnia 500 19 0.1622 0.811 468.5 8760Dahlia 556.5 19 0.1226 0.856 521.4 9750Orchid 636 37 0.1311 0.918 596.0 11400Violet 715 37 0.1391 0.974 671.0 12800Arbutus 795 37 0.1466 1.026 745.3 13900Magnolia 954 37 0.1606 1.124 894.5 16400Bluebell 1033.5 37 0.1672 1.170 968.4 17700Columbine 1351.5 61 0.1489 1.340 1266 23400Coreopsis 1590 61 0.1615 1.454 1489 27000Cowslip 2000 91 0.1482 1.630 1873 34200Lupine 2500 91 0.1657 1.823 2365 41900

3Electrical Data for Aluminum 1350 Conductors Resistance Reactance at 60 Hz**

Size DC at 20C AC at 25C AC at 50C AC at 75C Capacitive Inductive at 25C Ampacity*Codeword (AWG/kcmil) (ohm/kft) (ohm/kft) (ohm/kft) (ohm/kft) (megohm-kft) (ohm/kft) (A)

Peachbell 6 0.659 0.673 0.739 0.806 0.766 0.659 105Rose 4 0.414 0.423 0.465 0.506 0.729 0.414 135Iris 2 0.260 0.266 0.292 0.318 0.692 0.260 185Pansy 1 0.207 0.211 0.232 0.253 0.671 0.207 215Poppy 1/0 0.164 0.167 0.184 0.200 0.655 0.164 245Aster 2/0 0.130 0.133 0.146 0.159 0.634 0.130 285Phlox 3/0 0.103 0.105 0.116 0.126 0.618 0.103 330Oxlip 4/0 0.0816 0.0835 0.0917 0.100 0.602 0.0816 380Daisy 266.8 0.0647 0.0663 0.0727 0.0794 0.581 0.0647 440Laurel 266.8 0.0648 0.0663 0.0727 0.0794 0.581 0.0648 445Tulip 336.4 0.0513 0.0527 0.0578 0.0629 0.560 0.0513 510Cosmos 477 0.0363 0.0373 0.0409 0.0445 0.533 0.0363 640Syringa 477 0.0363 0.0373 0.0409 0.0445 0.533 0.0363 640Zinnia 500 0.0346 0.0356 0.0390 0.0426 0.533 0.0346 660Dahlia 556.5 0.0311 0.0320 0.0352 0.0383 0.522 0.0311 700Orchid 636 0.0272 0.0282 0.0309 0.0335 0.511 0.0272 760Violet 715 0.0241 0.0250 0.0275 0.0299 0.502 0.0241 820Arbutus 795 0.0217 0.0227 0.0248 0.0269 0.494 0.0217 880Magnolia 954 0.0181 0.0191 0.0208 0.0227 0.479 0.0181 980Bluebell 1033.5 0.0167 0.0177 0.0193 0.0210 0.473 0.0167 1030Columbine 1351.5 0.0128 0.0138 0.0151 0.0163 0.452 0.0128 1210Coreopsis 1590 0.0128 0.0120 0.0130 0.0141 0.439 0.0128 1230Cowslip 2000 0.00865 0.00994 0.0107 0.0115 0.421 0.00865 1520Lupine 2500 0.00699 0.00845 0.00907 0.00970 0.404 0.00699 1700

* Ampacity is with sun and wind at 2 ft/s** Reactance at 1 foot equivalent spacing

4Physical Data for ACSR Conductors Diameter (inch) Weight (lb/kft) Size Stranding Complete RatedCodeword (AWG/kcmil) (AI/Steel) Steel Wire Aluminum Wire Steel Core Conductor Aluminum Steel Total Strength (Ibf)

Turkey 6 6/1 0.0661 0.0661 0.066 0.198 24.4 11.6 36.0 1190Swan 4 6/1 0.0834 0.0834 0.083 0.250 39.0 18.4 57.4 1860Swanate 4 7/1 0.1029 0.0772 0.103 0.257 39.0 28.0 67.0 2360Sparrow 2 6/1 0.1052 0.1052 0.105 0.316 61.9 29.3 91.2 2850Sparate 2 7/1 0.1299 0.0974 0.130 0.325 62.3 44.7 102.0 3640Robin 1 6/1 0.1181 0.1181 0.118 0.355 78.1 36.9 115.0 3550Raven 1/0 6/1 0.1327 0.1327 0.133 0.398 98.4 46.6 145.0 4380Quail 2/0 6/1 0.1489 0.1489 0.149 0.447 124.2 58.8 183.0 5310Pigeon 3/0 6/1 0.1672 0.1672 0.167 0.502 155.9 74.1 230.0 6620Penguin 4/0 6/1 0.1878 0.1878 0.188 0.563 197.6 93.4 291.0 8350Waxwing 266.8 18/1 0.1217 0.1217 0.122 0.609 249.8 39.2 289.0 6880Partridge 266.8 26/7 0.0788 0.1013 0.236 0.642 250.4 115.6 366.0 11300Merlin 336.4 18/1 0.1367 0.1367 0.137 0.684 315.5 49.5 365.0 8680Linnet 336.4 26/7 0.0884 0.1137 0.265 0.720 316.5 145.5 462.0 14100Oriole 336.4 30/7 0.1059 0.1059 0.318 0.741 317.0 209.0 526.0 17300Chickadee 397.5 18/1 0.1486 0.1486 0.149 0.743 372.5 58.5 431.0 9940Ibis 397.5 26/7 0.0961 0.1236 0.288 0.783 374.1 171.9 546.0 16300Pelican 477 18/1 0.1628 0.1628 0.163 0.814 446.8 70.2 517.0 11800Flicker 477 24/7 0.0940 0.1410 0.282 0.846 449.5 164.5 614.0 17200Hawk 477 26/7 0.1053 0.1354 0.316 0.858 448.6 206.4 655.0 19500Hen 477 30/7 0.1261 0.1261 0.378 0.883 449.7 296.3 746.0 23800Osprey 556.5 18/1 0.1758 0.1758 0.176 0.879 521.1 81.9 603.0 13700Parakeet 556.5 24/7 0.1015 0.1523 0.305 0.914 524.2 191.8 716.0 19800Dove 556.5 26/7 0.1138 0.1463 0.341 0.927 523.9 241.1 765.0 22600Rook 636 24/7 0.1085 0.1628 0.326 0.977 598.8 219.2 818.0 22000Grosbeak 636 26/7 0.1216 0.1564 0.365 0.990 598.7 275.3 873.0 25200Drake 795 26/7 0.1360 0.1749 0.408 1.108 749.0 344.0 1093 31500Tern 795 45/7 0.0886 0.1329 0.266 1.063 748.9 146.1 895 22100Rail 954 45/7 0.0971 0.1456 0.291 1.165 899 176 1075 25900Cardinal 954 54/7 0.1329 0.1329 0.399 1.196 899 329 1228 33800Curlew 1033.5 54/7 0.1383 0.1383 0.415 1.245 973 356 1329 36600Bluejay 1113 45/7 0.1049 0.1573 0.315 1.259 1049 205 1254 29800Bittern 1272 45/7 0.1121 0.1680 0.336 1.345 1198 234 1432 34100Lapwing 1590 45/7 0.1253 0.1880 0.376 1.504 1498 292 1790 42200Bluebird 2156 84/19 0.0961 0.1602 0.481 1.762 2040 468 2508 60300

5Electrical Data for ACSR Conductors

Resistance Reactance at 60 Hz ** Inductive Inductive Inductive Size DC at 20C AC at 25C AC at 50C AC at 75C Capacitive at 25C at 50C at75C Ampacity*Codeword (AWG/kcmil) (ohm/kft) (ohm/kft) (ohm/kft) (ohm/kft) (megohm-kft) (ohm/kft) (ohm/kft) (ohm/kft) (A)

Turkey 6 0.642 0.655 0.750 0.816 0.751 0.120 0.139 0.144 105Swan 4 0.403 0.412 0.479 0.522 0.715 0.115 0.131 0.137 140Swanate 4 0.399 0.407 0.463 0.516 0.710 0.113 0.124 0.130 140Sparrow 2 0.253 0.259 0.308 0.336 0.678 0.110 0.123 0.128 185Sparate 2 0.251 0.256 0.297 0.330 0.674 0.109 0.118 0.121 185Robin 1 0.201 0.206 0.247 0.270 0.660 0.107 0.119 0.122 210Raven 1/0 0.159 0.163 0.197 0.216 0.642 0.104 0.114 0.116 240Quail 2/0 0.126 0.130 0.162 0.176 0.624 0.102 0.112 0.113 275Pigeon 3/0 0.100 0.103 0.121 0.145 0.606 0.0992 0.108 0.109 315Penguin 4/0 0.0795 0.0822 0.107 0.116 0.597 0.0964 0.105 0.105 365Waxwing 266.8 0.0644 0.0657 0.0723 0.0788 0.576 0.0903 0.0903 0.0903 445Partridge 266.8 0.0637 0.0652 0.0714 0.0778 0.565 0.0881 0.0881 0.0881 455Merlin 336.4 0.0510 0.0523 0.0574 0.0625 0.560 0.0826 0.0826 0.0826 515Linnet 336.4 0.0506 0.0517 0.0568 0.0619 0.549 0.0854 0.0854 0.0854 530Oriole 336.4 0.0502 0.0513 0.0563 0.0614 0.544 0.0843 0.0843 0.0843 530Chickadee 397.5 0.0432 0.0443 0.0487 0.0528 0.544 0.0856 0.0856 0.0856 575Ibis 397.5 0.0428 0.0438 0.0481 0.0525 0.539 0.0835 0.0835 0.0835 590Pelican 477 0.0360 0.0369 0.0405 0.0441 0.528 0.0835 0.0835 0.0835 640Flicker 477 0.0358 0.0367 0.0403 0.0439 0.524 0.0818 0.0818 0.0818 670Hawk 477 0.0357 0.0366 0.0402 0.0438 0.522 0.0814 0.0814 0.0814 660Hen 477 0.0354 0.0362 0.0398 0.0434 0.517 0.0803 0.0803 0.0803 660Osprey 556.5 0.0309 0.0318 0.0348 0.0379 0.518 0.0818 0.0818 0.0818 710Parakeet 556.5 0.0307 0.0314 0.0347 0.0377 0.512 0.0801 0.0801 0.0801 720Dove 556.5 0.0305 0.0314 0.0345 0.0375 0.510 0.0795 0.0795 0.0795 730Rook 636 0.0268 0.0277 0.0303 0.0330 0.502 0.0786 0.0786 0.0786 780Grosbeak 636 0.0267 0.0275 0.0301 0.0328 0.499 0.0780 0.0780 0.0780 790Drake 795 0.0214 0.0222 0.0242 0.0263 0.482 0.0756 0.0756 0.0756 910Tern 795 0.0216 0.0225 0.0246 0.0267 0.488 0.0769 0.0769 0.0769 890Rail 954 0.0180 0.0188 0.0206 0.0223 0.474 0.0748 0.0748 0.0748 970Cardinal 954 0.0179 0.0186 0.0205 0.0222 0.470 0.0737 0.0737 0.0737 990Curlew 1033.5 0.0165 0.0172 0.0189 0.0205 0.464 0.0729 0.0729 0.0729 1040Bluejay 1113 0.0155 0.0163 0.0178 0.0193 0.461 0.0731 0.0731 0.0731 1070Bittern 1272 0.0135 0.0144 0.0157 0.0170 0.451 0.0716 0.0716 0.0716 1160Lapwing 1590 0.0108 0.0117 0.0128 0.0138 0.434 0.0689 0.0689 0.0689 1340Bluebird 2156 0.00801 0.00903 0.00977 0.0105 0.409 0.0652 0.0652 0.0652 1610

* Ampacity is with sun and wind at 2 ft/s** Reactance at 1 foot equivalent spacing

6ACSR-II Overhead Conductors

ACSR-II Overhead Conductors are manufactured from two standard ACSR conductors which are twisted together with a very long lay (8-10 feet). This simple cable design is very effective in reducing ice loading and wind-induced conductor motion, and the costly damage that these can cause.

AAC (all aluminum conductor) and AAAC (all aluminum alloy conductor) are also available in the twisted configuration, and are identified as AAC-II and AAAC-II respectively.

Wind-Induced Conductor Motion

Aeolian VibrationSteady, low speed wind loading can impart vertical motion to a standard overhead conductor. At resonant frequencies, the amplitude of this motion (aeolian vibration) is sufficient to cause fatigue damage to the conductor strands, and can reduce the life expectancy of the conductor.

ACSR-II conductor reduces aeolian vibration to harmless levels through two mechanisms: 1) Prevention of resonant vibrations 2) Conversion of vertical motion to rotational motion.

The twisted configuration of ACSR-II results in a constantly changing profile along its length. Consequently, the wind-force applied to the conductor is different at each point along its length. This variation in wind force effectively prevents resonant vibration and reduces vertical conductor motion.

A further reduction is achieved as a result of the ease of rotation of a twisted assembly compared to a single

conductor. Since a cabled conductor is much easier to rotate than a single conductor, much of the winds energy is dissipated through harmless rotation of an ACSR-II conductor rather than imparting damaging aeolian vibration.

Conductor GallopingThe combination of an eccentric ice coating and high wind-loading can create a situation where a standard overhead conductor is subjected to wind-induced lift. Vertical motion of several feet can result as the ice-coated conductor, behaving like an airfoil, is lifted and then dropped by the wind. Severe damage to the conductor and accessories can result as this cycle repeats itself.

However, the twisted configuration of the ACSR-II design changes the angle of wind attack along the cables length and prevents the formation of an ice airfoil. This effectively eliminates one of the key causes of conductor galloping.

Sub-Conductor OscillationWind speeds in excess of 20 mph can cause damaging wake-induced motion of bundled conductors in amplitudes of up to 5 feet.

However, it is known that if one of the conductors in a bundled system is a different diameter than the other, the likelihood of resonant vibrations being created is greatly reduced. When two ACSR-II conductors are used in a bundled configuration, it is very likely that at any point along the length of the bundle the apparent diameter of one ACSR-II conductor will be different from that of the other.

In addition, wind vortices formed in a standard bundled system cause vertical forces and vertical conductor motion. As stated previously, an ACSR-II conductor will convert these vertical forces into rotational motion.

Operating Temperatures

Compared to a standard ACSR conductor of equivalent cross-sectional area, ACSR-II conductor has a larger surface area. This allows for greater heat dissipation, and means that for a given current, ACSR-II conductor will operate at a lower temperature. Similarly, ACSR-II conductor has a greater ampacity than the equivalent single ACSR conductor.

Cost Savings

The unique physical properties of ACSR-II conductors can result in real savings in the cost of a T & D system. Fatigue damage to conductor strands is reduced, thus enhancing life-expectancy and delaying replacement. Accessories (i.e. vibration dampers, armor rods, and anti-galloping devices) normally used with standard conductors to reduce conductor motion can be eliminated. The higher installation tension permitted with ACSR-II conductor results in reduced structure costs through fewer and smaller structures. Lower operating temperature and resistance is obtained. Higher load capacity is achieved.

7Physical Data for ACSR-II Conductors Size Stranding Steel Wire Aluminum Major Overall Aluminum Steel Total RatedCodeword (AWG/kcmil) (Al/Steel) Diameter Wire Diameter Diameter * Weight Weight Weight Strength (inch) (inch) (inch) (lb/kft) (lb/kft) (lb/kft) (lbf)

ACSR-II Turkey 6 2 6/1 0.0661 0.0661 0.396 49.0 23.2 72.2 2380ACSR-II Swan 4 2 6/1 0.0834 0.0834 0.500 78.0 36.8 114.8 3720ACSR-II Swanate 4 2 7/1 0.1029 0.0772 0.514 78.0 56.0 134.0 4720ACSR-II Sparrow 2 2 6/1 0.1052 0.1052 0.632 124.0 58.6 182.6 5700ACSR-II Robin 1 2 6/1 0.1181 0.1181 0.710 156.4 73.8 230.2 7100ACSR-II Raven 1/0 2 6/1 0.1327 0.1327 0.796 197.4 93.2 290.6 8760ACSR-II Quail 2/0 2 6/1 0.1489 0.1489 0.894 248.8 117.6 366.4 10620ACSR-II Pigeon 3/0 2 6/1 0.1672 0.1672 1.004 313.4 148.2 461.6 13240ACSR-II Penguin 4/0 2 6/1 0.1878 0.1878 1.126 395.4 186.8 582.2 16700ACSR-II Waxwing 266.8 2 18/1 0.1217 0.1217 1.218 500.6 78.4 579.0 13760ACSR-II Partridge 266.8 2 26/7 0.0788 0.1013 1.284 503.4 231.2 734.6 22600ACSR-II Merlin 336.4 2 18/1 0.1367 0.1367 1.368 565.8 259.6 730.4 17360ACSR-II Linnet 336.4 2 26/7 0.0884 0.1137 1.440 634.2 291.0 925.2 28200ACSR-II Oriole 336.4 2 30/7 0.1059 0.1059 1.482 636.2 418.0 1054 34600ACSR-II Chickadee 397.5 2 18/1 0.1486 0.1486 1.486 746.2 117.0 863.2 19880ACSR-II Ibis 397.5 2 26/7 0.0961 0.1236 1.566 749.4 343.8 1093 32600ACSR-II Pelican 477 2 18/1 0.1628 0.1628 1.628 895.6 140.4 1036 23600ACSR-II Flicker 477 2 24/7 0.0940 0.1410 1.692 900.2 329.0 1229 34400ACSR-II Hawk 477 2 26/7 0.1053 0.1364 1.696 899.2 412.8 1312 39000ACSR-II Hen 477 2 30/7 0.1261 0.1261 1.766 902.2 592.6 1495 47600

* Minor Overall Diameter is 1/2 of Major Overall Diameter

Electrical Data for ACSR-II Conductors* Size Resistance Reactance at 60 Hz **Codeword (AWG/kcmil) Inductive Inductive Inductive DC at 20C AC at 25C AC at 50C AC at 75C Capacitive at 25C at 50C at 75C (ohm/kft) (ohm/kft) (ohm/kft) (ohm/kft) (megohm-kft) (ohm/kft) (ohm/kft) (ohm/kft)

ACSR-II Turkey 6 0.321 0.328 0.375 0.408 0.566 0.107 0.117 0.119ACSR-II Swan 4 0.202 0.206 0.240 0.261 0.530 0.102 0.110 0.113ACSR-II Swanate 4 0.199 0.204 0.232 0.258 0.525 0.101 0.106 0.109ACSR-II Sparrow 2 0.127 0.130 0.154 0.168 0.493 0.0967 0.104 0.106ACSR-II Robin 1 0.101 0.103 0.124 0.135 0.475 0.0938 0.100 0.102ACSR-II Raven 1/0 0.0796 0.0816 0.0986 0.108 0.457 0.0911 0.0960 0.0973ACSR-II Quail 2/0 0.0632 0.0651 0.0808 0.0880 0.439 0.0886 0.0937 0.0945ACSR-II Pigeon 3/0 0.0502 0.0517 0.0647 0.0723 0.420 0.0861 0.0906 0.0912ACSR-II Penguin 4/0 0.0398 0.0411 0.0533 0.0579 0.403 0.0833 0.0875 0.0878ACSR-II Waxwing 266.8 0.0322 0.0329 0.0362 0.0394 0.390 0.0794 0.0794 0.0794ACSR-II Partridge 266.8 0.0319 0.0326 0.0357 0.0389 0.382 0.0777 0.0777 0.0777ACSR-II Merlin 336.4 0.0255 0.0261 0.0287 0.0313 0.372 0.0768 0.0768 0.0768ACSR-II Linnet 336.4 0.0253 0.0259 0.0284 0.0310 0.364 0.0750 0.0750 0.0750ACSR-II Oriole 336.4 0.0251 0.0257 0.0281 0.0307 0.359 0.0741 0.0741 0.0741ACSR-II Chickadee 397.5 0.0216 0.0222 0.0243 0.0264 0.359 0.0748 0.0748 0.0748ACSR-II Ibis 397.5 0.0214 0.0219 0.0241 0.0262 0.351 0.0731 0.0731 0.0731ACSR-II Pelican 477 0.0180 0.0185 0.0203 0.0221 0.345 0.0727 0.0727 0.0727ACSR-II Flicker 477 0.0179 0.0184 0.0202 0.0220 0.339 0.0714 0.0714 0.0714ACSR-II Hawk 477 0.0178 0.0183 0.0201 0.0219 0.336 0.0710 0.0710 0.0710ACSR-II Hen 477 0.0177 0.0181 0.0199 0.0217 0.332 0.0701 0.0701 0.0701

* For single-aluminum-layer ACSR, the AC values are approximate, based on assumed current for 75C, 75% of assumed current for 50C, and 10% of assumed current for 25C. Reactances for multi-layer conductors are not temperature dependent. Data is adapted from conventional ACSR data given in Tables 4-15 and 4-16 of Aluminum Electrical Conductor Handbook, Second Edition, published by the Aluminum Association.** Reactance at 1 foot equivalent spacing

Nov. 2003

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