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All Aluminum Alloy Conductor (AAAC) Cables

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DESCRIPTION
Parameters

  1. Application

  AAAC is used as a bare overhead conductor for power transmission and distribution lines, on aerial circuits that require a larger mechanical resistance than AAC, and a better corrosion resistance than ACSR. The sag characteristics and the strength-to-weight ratio of AAAC is better than both AAC / ACSR.

  2. Standards

  Basic design to BS 3242 / BS EN 50182 / IEC 61089 / ASTM B 399/B 399M / DIN 48201-6 standards

  3. Cable Construction

  AAAC cable consists of aluminum alloy wires. The aluminum alloy wires are concentrically stranded.

  This section deals with heat-treatable magnesium silicon type aluminium alloys to the applicable International Standard, the electrical and mechanical properties of which all fall within the values suggested by relevant standard. Conductors to all other recognized specifications can also be supplied. The alloys referred to have higher strength but lower conductivity than pure aluminium. Being lighter, alloy conductors can sometimes be used to advantage in place of the more conventional ACSR; Having lower breaking loads than the later, their use becomes particularly favorable when ice and wind loadings are low.

  4. Electrical Properties

Density@20ºC

2.703 kg/dm

Temperature Coefficient@20°C

0.00403 (°C)

Resistivity@20°C

0.028264

Linear Expansivity

23 x10-6 (°C)

  5. SERVICE CONDITIONS

Ambient Temperature

-5°C - 50°C

Wind Pressure

80 – 130kg/m2

Seismic Acceleration

0.12 - 0.05g

Isokeraunic Level

10 – 18

Relative Humidity

5 – 100%

Density@20ºC

2.703 kg/dm

Temperature Coefficient@20°C

0.00403 (°C)

Resistivity@20°C

0.028264

Linear Expansivity

23 x10-6 (°C)

  6. All Aluminum Alloy Conductors (AAAC) -IEC 61089 Standard

Nominal cross-sectional area     

Actual cross-sectional area

Number of strands

Diameter

Approximate weight of cable

Nominal 
breaking 
load           

Maximum DC 
Resistance 
at 20

 

Single wire

Conductor

mm2

mm2

mm

mm

kg/km

kN

Ω/km

16

18.4

7

1.83

5.49

50.4

5.43

1.7896

25

28.8

7

2.29

6.86

78.7

8.49

1.1453

40

46.0

7

2.89

8.68

125.9

13.58

0.7158

63

72.5

7

3.63

10.9

198.3

21.39

0.4545

100

115

19

2.78

13.9

316.3

33.95

0.2877

125

144

19

3.10

15.5

395.4

42.44

0.2302

160

184

19

3.51

17.6

506.1

54.32

0.1798

200

230

19

3.93

19.6

632.7

67.91

0.1439

250

288

19

4.39

22.0

790.8

84.88

0.1151

315

363

37

3.53

24.7

998.9

106.95

0.0916

400

460

37

3.98

27.9

1268.4

135.81

0.0721

450

518

37

4.22

29.6

1426.9

152.79

0.0641

500

575

37

4.45

31.2

1585.5

169.76

0.0577

560

645

61

3.67

33.0

1778.4

190.14

0.0516

630

725

61

3.89

35.0

2000.7

213.90

0.0458

710

817

61

4.13

37.2

1154.8

241.07

0.0407

800

921

61

4.38

39.5

2540.6

271.62

0.0361

900

1036

91

3.81

41.8

2861.1

305.58

0.0321

1000

1151

91

4.01

44.1

3179.0

339.53

0.0289

1120

1289

91

4.25

46.7

3560.5

380.27

0.0258

1250

1439

91

4.49

49.4

3973.7

424.41

0.0231

 

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