Table 21-II
21.5 Continuous Current Carrying Capacity of ACSR Conductors

1.

Code Name & Size

ACSR 'Dog'

2.

Overall diameter

14.15mm

3.

Resistance at 200 C

0.2792 ohns/Km

4.

Maximum Design Temp. of conductor

750 C

5.

Region

Northern


Month

Ambient Temperature in C

Continuous current carrying capacity in Amp during 10 to 14 HRS for conductor of age

Up to one year

Between one to Ten years

Beyond 10 years

January

47.5

252.46

263.43

269.12

45.0

268.06

279.70

285.48

40.0

296.87

309.67

315.64

32.5

335.18

349.38

355.60

20.0

390.01

405.95

412.51

February

47.5

244.49

254.83

260.71

45.0

260.56

271.61

277.57

40.0

290.12

302.39

308.50

32.5

329.21

342.94

349.28

20.0

384.89

400.42

407.07

March

47.5

237.01

246.76

252.82

45.0

253.56

264.05

270.17

40.0

283.85

295.62

301.86

32.5

323.70

336.99

343.43

20.0

380.19

395.33

402.07

April

47.5

230.37

239.58

245.82

45.0

247.36

257.36

263.63

40.0

278.33

289.65

296.02

32,5

318.87

331.77

338.31

20.0

376.09

390.89

397.70

May

47.5

231.59

240.89

247.10

45.0

248.50

258.58

364.83

40.0

279.33

290.74

297.09

32.5

319.75

332.72

339.24

20.0

376.83

391.69

398.49

June

47.5

229.65

238.80

245.06

45.0

266.74

256.63

262.93

40.0

277.73

289.01

295.39

32.5

488.42

513.25

525.82

20.0

581.71

609.99

622.97

July

47.5

341.41

359.68

372.02

45.0

370.17

389.85

402.94

40.0

421.94

443.98

556.32

32.5

488.82

513.68

526.24

20.0

582.05

610.35

623.32

August

47.5

342.99

361.37

373.65

45.0

370.63

391.40

403.65

40.0

423.22

445.35

457.66

32.5

489.98

514.86

527.40

20.0

582.98

611.35

624.30

September

47.5

358.00

377.40

389.17

45.0

385.53

406.25

418.06

40.0

435.47

458.45

470.41

32.5

500.5

526.24

538.50

20.0

591.94

620.95

633.71

October

47.5

365.75

385.66

397.19

45.0

392.73

413.94

425.54

40.0

441.86

465.27

477.07

32.5

506.12

532.19

544.33

20.0

596.65

626.01

638.67

November

47.5

378.44

399.20

510.35

45.0

404.58

426.58

437.84

40.0

452.42

476.55

488.08

32.5

515.36

542.08

554.00

20.0

604.52

634.44

646.93

December

47.5

387.56

408.92

419.81

45.0

413.12

435.69

446.72

40.0

460.08

484.73

496.06

32.5

522.09

549.28

561.05

20.0

610.26

640.60

652.97


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