Bare Overhead Conductors

Bare Overhead Conductors
AAC, ACSR, ACSR II
A global cable expert
Bare Overhead Conductors
Nexans 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:
Packaging is provided as per
Aluminum Association Packaging
Standards for Aluminum Conductor and
ACSR, Sixth Edition
AAC Bare Overhead
Conductor
Product Construction
Bare 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 harddrawn (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 Benefits
AAC 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.
Applications
Stranded 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.
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)
1
ACSR Bare Overhead
Conductor
Product Construction
ACSR 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 Benefits
ACSR 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.
Applications
Aluminum conductors, steel reinforced
(ACSR) are widely used for overhead
transmission and distribution lines.
Physical Data for Aluminum 1350 Conductors
Diameter (inch)
Size
No. of
Individual
Complete
Weight
Codeword
(AWG/kcmil)
Wires
Wires
Conductor
(lb/kft)
Peachbell
Rose
Iris
Pansy
Poppy
Aster
Phlox
0xlip
Daisy
Laurel
Tulip
Cosmos
Syringa
Zinnia
Dahlia
Orchid
Violet
Arbutus
Magnolia
Bluebell
Columbine
Coreopsis
Cowslip
Lupine
6
4
2
1
1/0
2/0
3/0
4/0
266.8
266.8
336.4
477
477
500
556.5
636
715
795
954
1033.5
1351.5
1590
2000
2500
7
7
7
7
7
7
7
7
7
19
19
19
37
19
19
37
37
37
37
37
61
61
91
91
0.0612
0.0772
0.0974
0.1093
0.1228
0.1379
0.1548
0.1739
0.1952
0.1185
0.1331
0.1584
0.1135
0.1622 0.1226
0.1311
0.1391
0.1466
0.1606
0.1672
0.1489
0.1615
0.1482
0.1657
2
0.184
0.232
0.292
0.328
0.368
0.414
0.464
0.522
0.586
0.593
0.666
0.792
0.795
0.811
0.856
0.918
0.974
1.026
1.124
1.170
1.340
1.454
1.630
1.823
24.6
39.1
62.2
78.4
98.9
124.8
157.2
198.4
250.2 250.1
315.5
446.8
446.8
468.5
521.4
596.0
671.0
745.3
894.5
968.4
1266
1489
1873
2365
Rated
Strength
(Ibf)
563
881
1350
1640
1990
2510
3040
3830
4830
4970
6150
8360
8690
8760
9750
11400
12800
13900
16400
17700
23400
27000
34200
41900
Electrical Data for Aluminum 1350 Conductors
Resistance Reactance at 60 Hz**
Codeword
Size
(AWG/kcmil)
DC at 20°C
(ohm/kft)
AC at 25°C
(ohm/kft)
AC at 50°C
(ohm/kft)
AC at 75°C
(ohm/kft)
Capacitive
Inductive at 25°C
(megohm-kft)
(ohm/kft)
Ampacity*
(A)
Peachbell
6
0.659
0.673
0.739
0.806
0.766
0.659
105
Rose
4
0.414
0.423
0.465
0.506
0.729
0.414
135
Iris
2
0.260
0.266
0.292
0.318
0.692
0.260
185
Pansy
1
0.207
0.211
0.232
0.253
0.671
0.207
215
Poppy
1/0
0.164
0.167
0.184
0.200
0.655
0.164
245
Aster
2/0
0.130
0.133
0.146
0.159
0.634
0.130
285
Phlox
3/0
0.103
0.105
0.116
0.126
0.618
0.103
330
Oxlip
4/0
0.0816
0.0835
0.0917
0.100
0.602
0.0816
380
Daisy
266.8
0.0647
0.0663
0.0727
0.0794
0.581
0.0647
440
Laurel
266.8
0.0648
0.0663
0.0727
0.0794
0.581
0.0648
445
Tulip
336.4
0.0513
0.0527
0.0578
0.0629
0.560
0.0513
510
Cosmos
477
0.0363
0.0373
0.0409
0.0445
0.533
0.0363
640
Syringa
477
0.0363
0.0373
0.0409
0.0445
0.533
0.0363
640
Zinnia
500
0.0346
0.0356
0.0390
0.0426
0.533
0.0346
660
Dahlia
556.5
0.0311
0.0320
0.0352
0.0383
0.522
0.0311
700
Orchid
636
0.0272
0.0282
0.0309
0.0335
0.511
0.0272
760
Violet
715
0.0241
0.0250
0.0275
0.0299
0.502
0.0241
820
Arbutus
795
0.0217
0.0227
0.0248
0.0269
0.494
0.0217
880
Magnolia
954
0.0181
0.0191
0.0208
0.0227
0.479
0.0181
980
Bluebell
1033.5
0.0167
0.0177
0.0193
0.0210
0.473
0.0167
1030
Columbine
1351.5
0.0128
0.0138
0.0151
0.0163
0.452
0.0128
1210
Coreopsis
1590
0.0128
0.0120
0.0130
0.0141
0.439
0.0128
1230
Cowslip
2000
0.00865
0.00994
0.0107
0.0115
0.421
0.00865
1520
Lupine
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
3
Physical Data for ACSR Conductors
Diameter (inch)
Weight (lb/kft)
Size
Stranding
Complete
Codeword
(AWG/kcmil) (AI/Steel)
Steel Wire Aluminum Wire Steel Core
Conductor
Aluminum
Steel
Total
Turkey
Swan
Swanate
Sparrow
Sparate
Robin
Raven
Quail
Pigeon
Penguin
Waxwing
Partridge
Merlin
Linnet
Oriole
Chickadee
Ibis
Pelican
Flicker
Hawk
Hen
Osprey
Parakeet
Dove
Rook
Grosbeak
Drake
Tern
Rail
Cardinal
Curlew
Bluejay
Bittern
Lapwing
Bluebird
6
4
4
2
2
1
1/0
2/0
3/0
4/0
266.8
266.8
336.4
336.4
336.4
397.5
397.5
477
477
477
477
556.5
556.5
556.5
636
636
795
795
954
954
1033.5
1113
1272
1590
2156
6/1
6/1
7/1
6/1
7/1
6/1
6/1
6/1
6/1
6/1
18/1
26/7
18/1
26/7
30/7
18/1
26/7
18/1
24/7
26/7
30/7
18/1 24/7
26/7
24/7
26/7
26/7
45/7
45/7
54/7
54/7
45/7
45/7
45/7
84/19
0.0661
0.0834
0.1029
0.1052
0.1299
0.1181
0.1327
0.1489
0.1672
0.1878
0.1217
0.0788
0.1367
0.0884
0.1059
0.1486
0.0961
0.1628
0.0940
0.1053
0.1261
0.1758
0.1015
0.1138
0.1085
0.1216
0.1360
0.0886
0.0971
0.1329
0.1383
0.1049
0.1121
0.1253
0.0961
0.0661
0.0834
0.0772
0.1052
0.0974
0.1181
0.1327
0.1489
0.1672
0.1878
0.1217
0.1013
0.1367
0.1137
0.1059
0.1486
0.1236
0.1628
0.1410
0.1354
0.1261
0.1758
0.1523
0.1463
0.1628
0.1564
0.1749
0.1329
0.1456
0.1329
0.1383
0.1573
0.1680
0.1880
0.1602
0.066
0.083
0.103
0.105
0.130
0.118
0.133
0.149
0.167
0.188
0.122
0.236
0.137
0.265
0.318
0.149
0.288
0.163
0.282
0.316
0.378
0.176
0.305
0.341
0.326
0.365
0.408
0.266
0.291
0.399
0.415
0.315
0.336
0.376
0.481
4
0.198
0.250
0.257
0.316
0.325
0.355
0.398
0.447
0.502
0.563
0.609
0.642
0.684
0.720
0.741
0.743
0.783
0.814
0.846
0.858
0.883
0.879
0.914
0.927
0.977
0.990
1.108
1.063
1.165
1.196
1.245
1.259
1.345
1.504
1.762
24.4
39.0
39.0
61.9
62.3
78.1
98.4
124.2
155.9
197.6
249.8
250.4
315.5
316.5
317.0
372.5
374.1
446.8
449.5
448.6
449.7
521.1
524.2
523.9
598.8
598.7
749.0
748.9
899
899
973
1049
1198
1498
2040
11.6
18.4
28.0
29.3
44.7
36.9
46.6
58.8
74.1
93.4
39.2
115.6
49.5
145.5
209.0
58.5
171.9
70.2
164.5
206.4
296.3
81.9
191.8
241.1
219.2
275.3
344.0
146.1
176
329
356
205
234
292
468
36.0
57.4
67.0
91.2
102.0
115.0
145.0
183.0
230.0
291.0
289.0
366.0
365.0
462.0
526.0
431.0
546.0
517.0
614.0
655.0
746.0
603.0
716.0
765.0
818.0
873.0
1093
895
1075
1228
1329
1254
1432
1790
2508
Rated
Strength (Ibf)
1190
1860
2360
2850
3640
3550
4380
5310
6620
8350
6880
11300
8680
14100
17300
9940
16300
11800
17200
19500
23800
13700
19800
22600
22000
25200
31500
22100
25900
33800
36600
29800
34100
42200
60300
Electrical Data for ACSR Conductors
Resistance Reactance at 60 Hz **
Inductive
Inductive
Size
DC at 20°C AC at 25°C AC at 50°C AC at 75°C
Capacitive
at 25°C
at 50°C
Codeword
(AWG/kcmil) (ohm/kft)
(ohm/kft)
(ohm/kft) (ohm/kft) (megohm-kft) (ohm/kft)
(ohm/kft)
Inductive
at75°C
(ohm/kft)
Ampacity*
(A)
Turkey
Swan
Swanate
Sparrow
Sparate
Robin
Raven
Quail
Pigeon
Penguin
Waxwing
Partridge
Merlin
Linnet
Oriole
Chickadee
Ibis
Pelican
Flicker
Hawk
Hen
Osprey
Parakeet
Dove
Rook
Grosbeak
Drake
Tern
Rail
Cardinal
Curlew
Bluejay
Bittern
Lapwing
Bluebird
0.144
0.137
0.130
0.128
0.121
0.122
0.116
0.113
0.109
0.105
0.0903
0.0881
0.0826
0.0854
0.0843
0.0856
0.0835
0.0835
0.0818
0.0814
0.0803
0.0818
0.0801
0.0795
0.0786
0.0780
0.0756
0.0769
0.0748
0.0737
0.0729
0.0731
0.0716
0.0689
0.0652
105
140
140
185
185
210
240
275
315
365
445
455
515
530
530
575
590
640
670
660
660
710
720
730
780
790
910
890
970
990
1040
1070
1160
1340
1610
6
0.642
4
0.403
4
0.399
2
0.253
2
0.251
1
0.201
1/0
0.159
2/0
0.126
3/0
0.100
4/0
0.0795
266.8
0.0644
266.8
0.0637
336.4
0.0510
336.4
0.0506
336.4
0.0502
397.5
0.0432
397.5
0.0428
477
0.0360
477
0.0358
477
0.0357
477
0.0354
556.5
0.0309
556.5
0.0307
556.5
0.0305
636
0.0268
636
0.0267
795
0.0214
795
0.0216
954
0.0180
954
0.0179
1033.5 0.0165
1113
0.0155
1272
0.0135
1590
0.0108
2156 0.00801
0.655
0.412
0.407
0.259
0.256
0.206
0.163
0.130
0.103
0.0822
0.0657
0.0652
0.0523
0.0517
0.0513
0.0443
0.0438
0.0369
0.0367
0.0366
0.0362
0.0318
0.0314
0.0314
0.0277
0.0275
0.0222
0.0225
0.0188
0.0186
0.0172
0.0163
0.0144
0.0117
0.00903
0.750
0.479
0.463
0.308
0.297
0.247
0.197
0.162
0.121
0.107
0.0723
0.0714
0.0574
0.0568
0.0563
0.0487
0.0481
0.0405
0.0403
0.0402
0.0398
0.0348
0.0347
0.0345
0.0303
0.0301
0.0242
0.0246
0.0206
0.0205
0.0189
0.0178
0.0157
0.0128
0.00977
0.816
0.522
0.516
0.336
0.330
0.270
0.216
0.176
0.145
0.116
0.0788
0.0778
0.0625
0.0619
0.0614
0.0528
0.0525
0.0441
0.0439
0.0438
0.0434
0.0379
0.0377
0.0375
0.0330
0.0328
0.0263
0.0267
0.0223
0.0222
0.0205
0.0193
0.0170
0.0138
0.0105
* Ampacity is with sun and wind at 2 ft/s
** Reactance at 1 foot equivalent spacing
5
0.751
0.715
0.710
0.678
0.674
0.660
0.642
0.624
0.606
0.597
0.576
0.565
0.560
0.549
0.544
0.544
0.539
0.528
0.524
0.522
0.517
0.518
0.512
0.510
0.502
0.499
0.482
0.488
0.474
0.470
0.464
0.461
0.451
0.434
0.409
0.120
0.115
0.113
0.110
0.109
0.107
0.104
0.102
0.0992
0.0964
0.0903
0.0881
0.0826
0.0854
0.0843
0.0856
0.0835
0.0835
0.0818
0.0814
0.0803
0.0818
0.0801
0.0795
0.0786
0.0780
0.0756
0.0769
0.0748
0.0737
0.0729
0.0731
0.0716
0.0689
0.0652
0.139
0.131
0.124
0.123
0.118
0.119
0.114
0.112
0.108
0.105
0.0903
0.0881
0.0826
0.0854
0.0843
0.0856
0.0835
0.0835
0.0818
0.0814
0.0803
0.0818
0.0801
0.0795
0.0786
0.0780
0.0756
0.0769
0.0748
0.0737
0.0729
0.0731
0.0716
0.0689
0.0652
ACSR-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 Vibration
Steady, 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 wind’s energy
is dissipated through harmless rotation
of an ACSR-II conductor rather than
imparting damaging aeolian vibration.
Conductor Galloping
The 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 cable’s length
and prevents the formation of an ice
airfoil. This effectively eliminates one of
the key causes of conductor galloping.
Sub-Conductor Oscillation
Wind 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.
6
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 lifeexpectancy 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.
Physical Data for ACSR-II Conductors
Size
Stranding
Codeword
(AWG/kcmil)
(Al/Steel)
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
Turkey
Swan
Swanate
Sparrow
Robin
Raven
Quail
Pigeon
Penguin
Waxwing
Partridge
Merlin
Linnet
Oriole
Chickadee
Ibis
Pelican
Flicker
Hawk
Hen
6
4
4
2
1
1/0
2/0
3/0
4/0
266.8
266.8
336.4
336.4
336.4
397.5
397.5
477
477
477
477
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
6/1
6/1
7/1
6/1
6/1
6/1
6/1
6/1
6/1
18/1
26/7
18/1
26/7
30/7
18/1
26/7
18/1
24/7
26/7
30/7
Steel Wire
Diameter
(inch)
Aluminum
Wire Diameter
(inch)
0.0661
0.0834
0.1029
0.1052
0.1181
0.1327
0.1489
0.1672
0.1878
0.1217
0.0788
0.1367
0.0884
0.1059
0.1486
0.0961
0.1628
0.0940
0.1053
0.1261
0.0661
0.0834
0.0772
0.1052
0.1181
0.1327
0.1489
0.1672
0.1878
0.1217
0.1013
0.1367
0.1137
0.1059
0.1486
0.1236
0.1628
0.1410
0.1364
0.1261
Major Overall Aluminum
Diameter *
Weight
(inch)
(lb/kft)
0.396
0.500
0.514
0.632
0.710
0.796
0.894
1.004
1.126
1.218
1.284
1.368
1.440
1.482
1.486
1.566
1.628
1.692
1.696
1.766
49.0
78.0
78.0
124.0
156.4
197.4
248.8
313.4
395.4
500.6
503.4
565.8
634.2
636.2
746.2
749.4
895.6
900.2
899.2
902.2
Steel
Weight
(lb/kft)
Total
Weight
(lb/kft)
Rated
Strength
(lbf)
23.2
36.8
56.0
58.6
73.8
93.2
117.6
148.2
186.8
78.4
231.2
259.6
291.0
418.0
117.0
343.8
140.4
329.0
412.8
592.6
72.2
114.8
134.0
182.6
230.2
290.6
366.4
461.6
582.2
579.0
734.6
730.4
925.2
1054
863.2
1093
1036
1229
1312
1495
2380
3720
4720
5700
7100
8760
10620
13240
16700
13760
22600
17360
28200
34600
19880
32600
23600
34400
39000
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 20°C
AC at 25°C
AC at 50°C
AC at 75°C
Capacitive
at 25°C
at 50°C
at 75°C
(ohm/kft)
(ohm/kft)
(ohm/kft)
(ohm/kft)
(megohm-kft) (ohm/kft)
(ohm/kft) (ohm/kft)
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
ACSR-II
Turkey
Swan
Swanate
Sparrow
Robin
Raven
Quail
Pigeon
Penguin
Waxwing
Partridge
Merlin
Linnet
Oriole
Chickadee
Ibis
Pelican
Flicker
Hawk
Hen
6
4
4
2
1
1/0
2/0
3/0
4/0
266.8
266.8
336.4
336.4
336.4
397.5
397.5
477
477
477
477
0.321
0.202
0.199
0.127
0.101
0.0796
0.0632
0.0502
0.0398
0.0322
0.0319
0.0255
0.0253
0.0251
0.0216
0.0214
0.0180
0.0179
0.0178
0.0177
0.328
0.206
0.204
0.130
0.103
0.0816
0.0651
0.0517
0.0411
0.0329
0.0326
0.0261
0.0259
0.0257
0.0222
0.0219
0.0185
0.0184
0.0183
0.0181
0.375
0.240
0.232
0.154
0.124
0.0986
0.0808
0.0647
0.0533
0.0362
0.0357
0.0287
0.0284
0.0281
0.0243
0.0241
0.0203
0.0202
0.0201
0.0199
0.408
0.261
0.258
0.168
0.135
0.108
0.0880
0.0723
0.0579
0.0394
0.0389
0.0313
0.0310
0.0307
0.0264
0.0262
0.0221
0.0220
0.0219
0.0217
0.566
0.530
0.525
0.493
0.475
0.457
0.439
0.420
0.403
0.390
0.382
0.372
0.364
0.359
0.359
0.351
0.345
0.339
0.336
0.332
0.107
0.102
0.101
0.0967
0.0938
0.0911
0.0886
0.0861
0.0833
0.0794
0.0777
0.0768
0.0750
0.0741
0.0748
0.0731
0.0727
0.0714
0.0710
0.0701
0.117
0.110
0.106
0.104
0.100
0.0960
0.0937
0.0906
0.0875
0.0794
0.0777
0.0768
0.0750
0.0741
0.0748
0.0731
0.0727
0.0714
0.0710
0.0701
0.119
0.113
0.109
0.106
0.102
0.0973
0.0945
0.0912
0.0878
0.0794
0.0777
0.0768
0.0750
0.0741
0.0748
0.0731
0.0727
0.0714
0.0710
0.0701
For single-aluminum-layer ACSR, the AC values are approximate, based on assumed current for 75°C, 75% of assumed
*
current for 50°C, and 10% of assumed current for 25°C. 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
7
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Nov. 2003