Power Cables 

Power Cables

BS 6622 Single Core Armoured 33KV XLPE Stranded Copper Conductors

Construction

cross-sectional area mmsq

Minimum average thickness of insulation mm

Nominal diameter over insulation
mm

 

Nominal thickness of PVC bedding
mm

Nominal number and diameter of armoured wires no./mm

Nominal thickness of PVC oversheath
mm

Nominal overall diameter of cable mm

50

8

27.1

1.2

46/2.0

2.2

39.4

70

8

28.9

1.2

48/2.0

2.2

41.4

95

8

30.6

1.2

51/2.0

2.3

43.3

120

8

32.1

1.2

53/2.0

2.3

44.8

150

8

33.4

1.3

44/2.5

2.4

47.5

185

8

35.2

1.3

46/2.5

2.5

49.5

240

8

37.4

1.3

49/2.5

2.5

51.7

300

8

39.7

1.4

52/2.5

2.6

54.4

400

8

42.4

1.4

55/2.5

2.7

57.3

500

8

45.3

1.5

58/2.5

2.8

60.6

630

8

48.7

1.5

62/2.5

2.9

64.2

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

2.1

1000

850

100

70

2.4

500

900

100

95

2.7

500

950

100

120

3.1

500

950

100

150

3.6

500

1000

100

185

4.0

500

1050

100

240

4.7

500

1100

100

300

5.5

500

1150

100

400

6.4

250

1250

100

500

7.6

250

1300

125

630

9.1

250

1350

125

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

160

578

138

0.83

70

268

343

151

374

154

0.92

95

193

248

143

285

169

1.01

120

153

196

137

239

183

1.10

150

124

159

135

207

194

1.16

185

99.1

128

130

181

210

1.26

240

75.4

98

125

158

229

1.37

300

60.1

80

121

144

249

1.49

400

47.0

64

116

132

273

1.64

500

36.6

51

113

123

298

1.79

630

28.3

42

108

115

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

210

260

6.8

Typically

less

then

1kA

70

270

260

320

9.8

95

320

300

380

13.3

120

360

340

440

17.2

150

410

370

490

21.2

185

450

400

560

26.6

240

510

450

650

34.9

300

570

490

730

43.8

400

640

530

830

57.3

500

700

570

940

72.3

630

760

610

1050

91.2

800

Please refer to our technical department for further information

1000