Power Cables 

Power Cables

BS 6622 Single Core Unarmoured (Copper Wire Screen) 15KV XLPE Stranded Copper Conductors

Construction

Cross-sectional area

mmsq

Minimum average thickness of insulation

mm

Nominal diameterover insulation
mm

Nominal area of copper wire screen
mm sq

Nominal thickness of PVC oversheath
mm

Nominal overall diameter of cable

mm

70

4.5

21.2

16

1.8

28.1

95

4.5

22.9

16

1.9

30.1

120

4.5

24.4

16

1.9

31.8

150

4.5

25.7

16

2

33.1

185

4.5

27.5

16

2

35.1

240

4.5

29.7

25

2.1

37.3

300

4.5

32.0

25

2.2

39.8

400

4.5

34.7

35

2.3

42.7

500

4.5

37.6

35

2.4

45.9

630

4.5

41.5

35

2.5

50.0

Installation

cross-sectional area mmsq

Approximate cable weight

kg/m

Nominal drum length
m

Minimum bending radius mm

Nominal internal diameter of ducts mm

70

0.9

1000

550

100

95

1.1

500

550

100

120

1.2

500

600

100

150

1.3

500

600

100

185

1.5

500

650

100

240

1.8

500

700

100

300

2

500

750

100

400

2.5

500

800

100

500

2.9

500

850

100

630

3.4

400

900

100

Electrical Performance

cross-sectional area

mmsq

Maximum DC resistance of conductor at 20 ℃ uohms/m

Maximum AC resistance of conductor at 90 ℃ uohms/m

Reactance at 50Hz
uohms/m

Impedance at 50Hz

uohms/m

Maximum Capacitace

PF/m

Maximum charging current at normal voltage and frequency mA/m

70

443.0

568

127

582

232

0.63

95

320.0

410

120

427

258

0.70

120

253.0

325

116

345

281

0.77

150

206.0

365

112

288

301

0.82

185

164.0

211

109

237

329

0.9

240

125.0

161

105

192

363

0.99

300

100.0

130

101

165

398

1.09

400

77.8

102

97.9

141

439

1.2

500

60.5

81

95.1

125

483

1.32

630

46.9

64

91.5

112

542

1.46

Ratings

Cross-sectional area
mmsq

Laid direct in ground
Amps

Drawn into ducts
Amps

Laid in air
Amps

One second short circuit rating of conductor
KA

One second short circuit rating of copper per core
KA

70

210

215

240

6.3

2.6

95

250

255

300

8.5

2.6

120

280

285

355

11

2.6

150

320

315

380

13.5

2.6

185

360

350

435

17

2.6

240

415

405

510

22.3

4.3

300

475

455

600

28

4.3

400

540

510

700

36.6

5.8

500

610

570

810

46.2

5.8

630

680

640

930

58.3

5.8