Power Cables 

Power Cables

BS 6622 Single Core Unarmoured ( Copper Wire Screen) 33KV XLPE Stranded Copper Conductors

Construction

cross-sectional area mmsq

Minimum average thickness of insulation mm

Nominal diameter over insulation
mm

 

Nominal area of copper wire screen
mm sq

Nominal average thickness of PVC oversheath
mm

Nominal overall diameter of cable

mm

50

8

27.1

16

2.0

34.5

70

8

28.9

16

2.0

36.5

95

8

30.6

16

2.1

38.4

120

8

32.1

16

2.1

39.9

150

8

33.4

16

2.2

41.2

185

8

35.2

16

2.2

13.2

240

8

37.4

25

2.3

15.7

300

8

39.7

25

2.4

18.2

400

8

42.4

35

2.5

51.1

500

8

45.3

35

2.6

54.0

630

8

48.7

35

2.7

57.8

800

Please refer to our technical department for further information

1000

Installation

cross-sectional area mmsq

Approximate cable weight

kg/m

Nominal drum length
m

Minimum bending radius

mm

Nominal internal diameter of ducts

mm

50

1.5

1000

750

100

70

1.8

500

800

100

95

2.1

500

850

100

120

2.4

500

850

100

150

2.7

500

900

100

185

3.1

500

950

100

240

3.8

500

1000

100

300

4.5

500

1050

100

400

5.5

250

1100

100

500

6.6

250

1150

100

630

8.0

250

1250

100

800

Please refer to our technical department for further information

1000

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

50

387

494

152

516

138

0.83

70

268

343

143

371

154

0.92

95

193

248

135

281

169

1.01

120

153

196

130

235

183

1.10

150

124

159

126

202

194

1.16

185

99.1

128

122

176

210

1.26

240

75.4

98

117

152

229

1.37

300

60.1

80

113

138

249

1.49

400

47.0

64

109

126

273

1.64

500

36.6

51

105

116

298

1.79

630

28.3

42

102

110

327

1.96

800

Please refer to our technical department for further information

1000

Ratings

Cross-sectional area
mmsq

Current Ratings

Short circuit ratings

Laid 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

50

220

225

260

6.8

2.6

70

270

270

320

9.8

2.6

95

320

320

390

13.3

2.6

120

360

360

445

17.2

2.6

150

410

405

510

21.2

2.6

185

460

445

580

26.6

2.6

240

530

520

680

34.9

4.3

300

600

570

770

43.8

4.3

400

690

630

890

57.3

5.8

500

760

700

1020

72.3

6.0

630

850

780

1160

91.2

5.8

800

Please refer to our technical department for further information

1000