Medium Voltage Cables to BS 6622

Nom.
Cross- Section Area

Nom. Insulation Thickness

Copper
Wire Screen Area

Copper Tape Screen Area

Nom.Bedding Thickness

Nom. Armour Wire Diameter

Nom. Sheath Thickness

Approx. Overall Diameter

Approx. Weight

CU

AL

mm²

mm

mm²

mm²

mm

mm

mm

mm

kg/km

70

5.5

16

8.7

1.6

2.5

3.0

69.0

8710

7370

95

5.5

16

9.4

1.7

2.5

3.2

73.1

10000

8130

120

5.5

16

10.2

1.7

3.15

3.3

77.7

12040

9730

150

5.5

25

10.7

1.8

3.15

3.4

81.7

13550

10750

185

5.5

25

11.4

1.9

3.15

3.6

85.5

15150

11610

240

5.5

25

12.5

2.0

3.15

3.7

91.3

17710

12840

300

5.5

25

13.4

2.0

3.15

3.9

96.0

20170

14360

400

5.5

35

14.4

2.2

3.15

4.1

104.8

24520

16480

Nom. Cross- Section Area

D C
Resistance CU / AL

A C
Resistance CU / AL

Short Circuit Rating of Conductor CU / AL
1 sec

Capaci- tance

Charging Current

Short Circuit Rating of Screen 1 sec

Reac- tance

Induc- tance

Current Ratings

Ground

Duct

Air

Copper Wire

Copper Tape

CU

AL

CU

AL

CU

AL

mm²

µΩ/m

µΩ/m

kA

pF/m

mA/m

kA

µΩ/m

nH/m

A

A

A

70

268/443

343/568

9.8/6.3

207

0.83

1.96

1.28

115

370

255

195

225

170

275

215

95

193/320

248/410

13.3/8.5

229

0.92

1.96

1.38

110

350

295

230

260

205

330

260

120

153/253

196/325

17.2/11.0

249

1.00

1.96

1.48

106

340

335

260

300

235

380

300

150

124/206

159/265

21.2/13.5

266

1.06

3.06

1.56

103

330

375

290

335

265

430

335

185

99/164

128/211

26.6/17.0

289

1.16

3.06

1.66

100

320

420

330

380

300

490

390

240

75/125

98/161

34.9/22.3

318

1.27

3.06

1.82

95

300

480

380

430

345

570

460

300

60/100

80/130

43.8/28.0

348

1.39

3.06

1.95

93

300

530

425

480

385

650

520

400

47/78

64/102

57.3/36.6

383

1.53

4.29

2.11

87

280

590

480

520

420

700

570