OVERHEAD ALUMINIUMCONDUCTORS

All Aluminium ConductorsAll Aluminium Alloy Conductors

Aluminium Conductors Steel Reinforced

Need Power Connections? We Have The Solutions! 70

ALL ALUMINIUM CONDUCTOR FOR OVERHEAD POWER TRANSMISSION

MIDGEANTFLY

WASPHORNETCHAFER

COCKROACHBUTTERFLYCENTIPEDE

CODE NAME

22

50

60

100

150

200

250

300

400

NOMINALALUMINIUM

AREA

mm2

14.2

32.3

38.7

64.5

96.8

129

161

194

258

7/2.06

7/3.10

7/3.40

7/4.39

19/3.25

19/3.78

19/4.22

19/4.65

37/3.78

23.3

52.8

63.6

106.0

157.6

213.2

265.7

322.7

415.2

64

145

174

290

434

587

731

888

1145

4000

8300

9900

16000

24700

32400

40400

48700

63100

1.227

0.5419

0.4505

0.2702

0.1825

0.1349

0.10830

0.08916

0.06944

72

112

124

158

190

215

232

247

262

EQUIVALENTCOPPER

AREA

mm2

CONDUCTORCONSTRUCTION

No./mm

6.2

9.3

10.2

13.2

16.3

18.9

21.1

23.3

26.5

APPROX.OVERALLDIAMETER

mm

CALCULATEDAREA

mm2

APPROX.WEIGHT

kg/km

NOMINALBREAKING

LOAD

N

MAX. DCRESISTANCE

AT 20°C

Ω/km

CURRENTRATING

Amp

BS 215:PART 1 REFERENCE CODE : AAC

ALL ALUMINIUM ALLOY CONDUCTOR FOR OVERHEAD POWER TRANSMISSION

ALMONDCEDAR

FIR

HAZELOAKASH

ELMUPAS

CODE NAME

25

30

40

50

100

150

175

300

NOMINALALUMINIUM

AREA

mm2

16.1

19.4

25.8

32.3

64.5

96.8

113

194

7/2.34

7/2.54

7/2.95

7/3.30

7/4.65

19/3.48

19/3.76

37/3.53

30.1

35.5

47.8

59.90

118.9

180.7

211.0

362.1

82

97

131

164

325

497

580

997

8450

9950

13400

16800

33300

50600

59100

101500

1.094

0.9281

0.6880

0.5498

0.2769

0.1830

0.1568

0.09155

85

85

99

113

150

181

188

209

EQUIVALENTCOPPER

AREA

mm2

CONDUCTORCONSTRUCTION

No./mm

7.02

7.62

8.85

9.90

13.95

17.40

18.80

24.71

APPROX.OVERALLDIAMETER

mm

CALCULATEDAREA

mm2

APPROX.WEIGHT

kg/km

NOMINALBREAKING

LOAD

N

MAX. DCRESISTANCE

AT 20°C

Ω/km

CURRENTRATING

Amp

BS 3242 REFERENCE CODE AAAC

ALL ALUMINIUM ALLOY CONDUCTOR FOR OVERHEAD POWER TRANSMISSION

CODE NAME

NOMINALALUMINIUM

AREA

mm2

EQUIVALENTCOPPER

AREA

mm2

CONDUCTORCONSTRUCTION

No./mm

APPROX.OVERALLDIAMETER

mm

CALCULATEDAREA

mm2

APPROX.WEIGHT

kg/km

NOMINALBREAKING

LOAD

N

MAX. DCRESISTANCE

AT 20°C

Ω/km

CURRENTRATING*

Amp

TNB SPECIFICATION REFERENCE CODE ACSR

ALUMINIUM STEEL

BATANG 300 197 18/4.78 7/1.68 24.16 323.0 1010 69670 0.08914 178

NOTES :* THE RATINGS ARE BASED ON THE FOLLOWING CONDITIONS:

1. Wind speed 0.447 m/s

2. Ambient Temperature 35 °C

3. Intensity of solar radiotion 1200 W/m2

4. Temperature rise 20 °C

71

BS 215:PART 2 REFERENCE CODE ACSR

CODE NAME

NOMINALALUMINIUM

AREA

mm2

EQUIVALENTCOPPER

AREA

mm2

CONDUCTORCONSTRUCTION

No./mm

APPROX.OVERALLDIAMETER

mm

CALCULATEDAREA

mm2

APPROX.WEIGHT

kg/km

NOMINALBREAKING

LOAD

N

MAX. DCRESISTANCE

AT 20°C

Ω/km

CURRENTRATING

Amp

ALUMINIUM STEEL

16.1

19.4

25.8

32.3

45.2

64.5

96.8

97.9

113.0

113.7

129

226

130

258

6/2.36

6/2.59

6/3.00

6/3.35

12/2.59

6/4.72

30/2.59

18/3.35

30/2.79

18/3.61

30/3.00

54/3.00

18/3.86

54/3.18

1/2.36

1/2.59

1/3.00

1/3.35

7/2.79

7/1.57

7/2.59

1/3.35

7/2.79

1/3.61

7/3.00

7/3.00

1/3.86

7/3.18

7.08

7.77

9.00

10.05

13.95

14.15

18.13

16.75

19.53

18.05

21.00

27.00

19.30

28.62

30.62

36.88

49.48

61.70

116.2

118.5

194.9

167.5

226.2

194.5

261.5

431.3

222.3

484.5

106

128

172

214

538

394

726

506

842

587

974

1444

671

1621

9600

11400

15200

18400

61200

32700

69200

35700

79800

41000

92200

120900

46600

131900

1.093

0.9077

0.6766

0.5426

0.3936

0.2733

0.1828

0.1815

0.1576

0.1563

0.1363

0.07571

0.13670

0.06740

GOPHER

WEASEL

FERRET

RABBIT

HORSE

DOG

WOLF

DINGO

LYNX

CARACAL

PANTHER

BISON

JAGUAR

ZEBRA

25

30

40

50

70

100

150

150

175

175

200

-

200

400

77

84

98

112

148

153

162

179

178

205

191

208

197

202

CURRENT RATING CALCULATION FOR ALUMINIUM CONDUCTOR STEEL REINFORCEDThe following equations can used toCalculate the current rating for ACSR.

Ws : solar radiation = 0.1 W/cm2

: Black body radiation coefficient = 0.9Ra : ac resistance of conductor, Ω/cm

Where,

1) Heat dissipated due to wind velocity,

hw = 0.005720.123{273 + T + (0/2)} D

W/°C cm2

: Wind velocity m/sD : Conductor diameter cmT : Ambient temperature °C0 : Permissible temp. increase °C

2) Heat dissipated due to radiation,

W/°C cm2hr = 0.000567

273 + T + 0 4

100273 + T 4

1000

Ra = K1 K2 Rd

Where,

Rd : dc resistance of conductor converted to R at (T + 0)

Rd = Rto{1+ (t-to)}; t = (T + 0) : Temperature coefficient at 20°C = 0.004to = 20°CRto : dc resistance at 20°C

{hw + (hr - [Ws/π0])n} π D0

RaCurrent rating I = Amp - eqn.(1) cross sectional view

GalvanisedSteel Core

Aluminiumwires

d D

Continuous Current Rating (Calculation)

ALUMINIUM CONDUCTOR STEELREINFORCED FOR

OVERHEAD POWER TRANSMISSION

Skin effect constant:-K1 = 0.99609 + 0.018578 - 0.030263 2 + 0.020733 3

=(D+2d) x 0.01 x (D+d)

8 π f (D-d)(D+d) Rd

Iron loss constant:-K2 = 0.99947 + 0.028895 - 0.0059348 2 + 0.00042259 3

For ACSR with 3 layers of Aluminium

= IS S = π (D2 – d2) mm2

4

Ra = K1K2Rd

Where I = current from eqn.(1)

f : Frequency in Hz

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