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

4.5

16

8.02

1.5

2.5

2.9

64.6

8030

6700

95

4.5

16

8.71

1.6

2.5

3.0

68.2

9160

7330

120

4.5

16

9.43

1.7

2.5

3.1

71.7

10340

8030

150

4.5

25

9.99

1.7

2.5

3.2

75.4

11730

8930

185

4.5

25

10.82

1.8

3.15

3.4

80.6

14170

10570

240

4.5

25

11.76

1.9

3.15

3.6

86.6

16670

11810

300

4.5

25

12.64

2.0

3.15

3.7

91.3

19140

13340

400

4.5

35

13.71

2.1

3.15

4.0

100.0

23360

15410

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

240

0.65

1.96

1.17

110

350

255

195

215

165

270

210

95

193/320

248/410

13.3/8.5

267

0.73

1.96

1.27

105

330

300

230

255

200

330

250

120

153/253

196//325

17.2/11.0

291

0.79

1.96

1.38

102

320

340

265

290

225

375

295

150

124/206

159/265

21.2/13.5

312

0.85

3.06

1.46

98

310

380

300

330

255

430

330

185

99/164

128/211

26.6/17.0

340

0.93

3.06

1.58

95

300

430

335

370

290

490

385

240

75/125

98/161

34.9/22.3

375

1.02

3.06

1.72

91

290

490

380

425

335

570

450

300

60/100

80/130

43.8/28.0

411

1.12

3.06

1.85

89

280

540

435

470

375

650

510

400

47/78

64/102

57.3/36.6

454

1.24

4.29

2.00

84

270

590

480

520

420

700

570