Electric Power Generation, Transmission, and Distribution

TABLE 13.3a

Characteristics of All-Aluminum-Conductors (AAC)

Cross-Section Area

Diameter

Approx. Current-Carrying Capacity

Resistance (m

V=

km)

60 Hz Reactances

(Dm

¼

1m)

DC

AC (60 Hz)

GMR

XL

XC

Code

(mm

2 )

kcmil or AWG

Stranding

(mm)

Layers

(Amperes)

25

8 C25

8 C50

8 C75

8 C

(mm)

(V

=km)

(M

V=

km)

Coreopsis

806.2

1591

61

36.93

4

1380

36.5

39.5

42.9

46.3

14.26

0.320

0.190

Glaldiolus

765.8

1511

61

35.99

4

1340

38.4

41.3

44.9

48.5

13.90

0.322

0.192

Carnation

725.4

1432

61

35.03

4

1300

40.5

43.3

47.1

50.9

13.53

0.324

0.193

Columbine

865.3

1352

61

34.04

4

1250

42.9

45.6

49.6

53.6

13.14

0.327

0.196

Narcissus

644.5

1272

61

33.02

4

1200

45.5

48.1

52.5

56.7

12.74

0.329

0.194

Hawthorn

604.1

1192

61

31.95

4

1160

48.7

51.0

55.6

60.3

12.34

0.331

0.197

Marigold

564.2

1113

61

30.89

4

1110

52.1

54.3

59.3

64.3

11.92

0.334

0.199

Larkspur

524

1034

61

29.77

4

1060

56.1

58.2

63.6

69.0

11.49

0.337

0.201

Bluebell

524.1

1034

37

29.71

3

1060

56.1

58.2

63.5

68.9

11.40

0.337

0.201

Goldenrod

483.7

955

61

28.6

4

1010

60.8

62.7

68.6

74.4

11.03

0.340

0.203

Magnolia

483.6

954

37

28.55

3

1010

60.8

62.7

68.6

74.5

10.97

0.340

0.203

Crocus

443.6

875

61

27.38

4

950

66.3

68.1

74.5

80.9

10.58

0.343

0.205

Anemone

443.5

875

37

27.36

3

950

66.3

68.1

74.5

80.9

10.49

0.344

0.205

Lilac

403.1

796

61

26.11

4

900

73.0

74.6

81.7

88.6

10.09

0.347

0.207

Arbutus

402.9

795

37

26.06

3

900

73.0

74.6

81.7

88.6

10.00

0.347

0.207

Nasturtium

362.5

715

61

24.76

4

840

81.2

82.6

90.5

98.4

9.57

0.351

0.209

Violet

362.8

716

37

24.74

3

840

81.1

82.5

90.4

98.3

9.48

0.351

0.209

Orchid

322.2

636

37

23.32

3

780

91.3

92.6

101.5

110.4

8.96

0.356

0.212

Mistletoe

281.8

556

37

21.79

3

730

104.4

105.5

115.8

126.0

8.38

0.361

0.215

Dahlia

281.8

556

19

21.72

2

730

104.4

105.5

115.8

125.9

8.23

0.362

0.216

Syringa

241.5

477

37

20.19

3

670

121.8

122.7

134.7

146.7

7.74

0.367

0.219

Cosmos

241.9

477

19

20.14

2

670

121.6

122.6

134.5

146.5

7.62

0.368

0.219

Canna

201.6

398

19

18.36

2

600

145.9

146.7

161.1

175.5

6.95

0.375

0.224

Tulip

170.6

337

19

16.92

2

530

172.5

173.2

190.1

207.1

6.40

0.381

0.228

Laurel

135.2

267

19

15.06

2

460

217.6

218.1

239.6

261.0

5.70

0.390

0.233

Daisy

135.3

267

7

14.88

1

460

217.5

218

239.4

260.8

5.39

0.394

0.233

Oxlip

107.3

212 or (4

=0)

7

13.26

1

340

274.3

274.7

301.7

328.8

4.82

0.402

0.239

Phlox

85

168 or (3

=0)

7

11.79

1

300

346.4

346.4

380.6

414.7

4.27

0.411

0.245

Aster

67.5

133 or (2

=0)

7

10.52

1

270

436.1

439.5

479.4

522.5

3.81

0.40

0.25

Poppy

53.5

106 or (1

=0)

7

9.35

1

230

550

550.2

604.5

658.8

3.38

0.429

0.256

Pansy

42.4

#1 AWG

7

8.33

1

200

694.2

694.2

763.2

831.6

3.02

0.438

0.261

Iris

33.6

#2 AWG

7

7.42

1

180

874.5

874.5

960.8

1047.9

2.68

0.446

0.267

Rose

21.1

#3 AWG

7

5.89

1

160

1391.5

1391.5

1528.9

1666.3

2.13

0.464

0.278

Peachbell

13.3

#4 AWG

7

4.67

1

140

2214.4

2214.4

2443.2

2652

1.71

0.481

0.289

Current capacity evaluated at 75

8 C conductor temperature, 25

8 C air temperature, wind speed of 1.4 mi

=h, and frequency of 60 Hz.

Sources

:Transmission Line Reference Book 345 kV and Above

, 2nd ed., Electric Power Research Institute, Palo Alto, California, 1987. With permission.

Glover, J.D. and Sarma, M.S.,

Power System Analysis and Design

,3rded.,Brooks

=Cole, 2002. With permission.