Medium Voltage Cables 

Medium Voltage Cables to BS 6622

Single Core Cables to BS 6622

Single Core 8.7/15KV (Um=17.5kV) Dimensional Data

Nom.
Cross-
Section
Area

 

Unarmoured Cables

Aluminium Wire Armoured Cables

Nom.
Insulation Thickness

Copper Wire Screen Area

Nom.Sheath
Thickness

Approx. Overall Diameter

Approx. Weight

Copper Tape
Screen
Area

Nom.Bedding
Thickness

Nom. Armour Wire Diameter

Nom.
Sheath Thickness

Approx. Overall Diameter

Approx.
Weight

CU

AL

CU

AL

mm2

mm

mm2

mm

mm

kg/km

mm2

mm

mm

mm

mm

kg/km

25

4.5

16

1.6

23.7

940

820

4.4

1.2

1.6

1.8

30.3

1430

1210

35

4.5

16

1.7

24.9

1140

870

4.7

1.2

1.6

1.9

31.5

1630

1310

50

4.5

16

1.7

26.6

1240

920

4.9

1.2

1.6

1.9

32.6

1730

1410

70

4.5

16

1.8

28.4

1470

1030

5.3

1.2

1.6

1.9

34.2

1970

1520

95

4.5

16

1.9

30.2

1750

1160

5.7

1.2

2.0

2.0

36.8

2370

1770

120

4.5

16

1.9

31.6

2100

1250

6.1

1.2

2.0

2.1

38.4

2670

1910

150

4.5

25

2.0

33.5

2340

1400

6.4

1.2

2.0

2.1

40.1

3020

2080

185

4.5

25

2.0

35.0

2690

1520

6.8

1.2

2.0

2.2

41.8

3420

2240

240

4.5

25

2.1

36.8

3270

1740

7.4

1.2

2.0

2.3

44.5

4050

2500

300

4.5

25

2.2

39.9

3870

1990

7.9

1.2

2.0

2.3

46.5

4680

2780

400

4.5

35

2.3

43.8

4890

2370

8.5

1.3

2.5

2.5

51.8

5970

3430

500

4.5

35

2.4

46.4

5860

2760

9.2

1.3

2.5

2.6

54.4

7010

3910

630

4.5

35

2.5

51.6

7190

3190

10.0

1.4

2.5

2.7

59.8

8480

4420

Electrical Data

Nom.
Cross-
Section
Area

 

Unarmoured Cables

Aluminium Wire Armoured Cables

 

D C Resistance
CU / AL

A C Resistance
CU / AL

Short
Circuit Rating of
Conductor
CU / AL
1 sec

Capac-itance

Charging Current

Short
Circuit
Rating of Copper Wire Screen
1 sec

Short Circuit Rating of Copper Tape Screen
1 sec

Reactance

Inductance 

Impedance

Trefoil

Flat Spaced

Trefoil

Flat Spaced

Trefoil

Flat Spaced

CU

AL

CU

AL

mm2

µΩ/m

µΩ/m

kA

pF/m

mA/m

kA

kA

µΩ/m

µΩ/m

nH/m

nH/m

µΩ/m

µΩ/m

25

727/1200

927/1538

3.6/2.3

171

0.47

2.6

0.6

154

217

480

680

936

1544

952

1554

35

524/868

668/1113

5.0/3.2

187

0.51

2.6

0.6

145

208

460

660

679

1121

695

1131

50

387/641

494/822

6.8/4.4

204

0.56

2.6

0.7

138

201

440

640

511

834

527

844

70

268/443

343/568

9.8/6.3

232

0.63

2.6

0.7

132

188

420

600

364

583

386

597

95

193/320

248/410

13.3/8.5

258

0.70

2.6

0.8

126

182

400

580

272

427

300

446

120

153/253

196/325

17.2/11.0

281

0.77

2.6

0.8

119

179

380

570

225

345

257

367

150

124/206

159/265

21.2/13.5

301

0.82

4.3

0.9

113

176

360

560

193

287

229

313

185

99.1/164

128/211

26.6/17.0

329

0.90

4.3

0.9

110

170

350

540

165

237

206

267

240

75.4/125

98/161

34.9/22.3

363

0.99

4.3

1.0

107

166

340

530

140

191

185

226

300

60.1/100

80/130

43.8/28.0

398

1.09

4.3

1.1

104

160

330

510

126

163

174

203

400

47/77.8

64/102

57.3/36.6

439

1.20

5.8

1.2

97

157

310

500

113

141

164

184

500

36.6/60.5

51/81

72.3/46.2

483

1.32

5.8

1.3

94

154

300

490

105

124

158

171

630

28.3/46.9

42/64

91.2/58.3

534

1.46

5.8

1.4

91

151

290

480

97

110

151

160