Medium Voltage Cables 

Medium Voltage Cables to BS 6622

Three Core Cables to BS 6622

Three Core 6.35/11KV (Um=12KV)
Dimensional Data

Nom.
Cross-
Section
Area

 

Unarmoured Cables

Steel 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

3.4

16

2.3

42.8

2600

2120

3.8

1.3

2.5

2.4

50.0

4930

4400

35

3.4

16

2.3

45.3

3000

2320

4.1

1.3

2.5

2.5

52.3

5380

4700

50

3.4

16

2.4

48.5

3630

2690

4.4

1.4

2.5

2.6

55.7

6210

5260

70

3.4

16

2.5

52.0

4440

3110

4.7

1.4

2.5

2.7

59.2

7200

5870

95

3.4

16

2.7

56.0

5440

3620

5.2

1.5

2.5

2.8

63.2

8420

6550

120

3.4

16

2.8

59.4

6370

4020

5.5

1.6

2.5

3.0

67.0

9580

7190

150

3.4

25

2.9

62.7

7430

4630

5.8

1.6

2.5

3.1

70.3

10830

8030

185

3.4

25

3.0

66.1

8680

5150

6.2

1.7

2.5

3.2

73.9

12290

8720

240

3.4

25

3.1

71.7

10690

5990

6.8

1.8

3.15

3.4

81.2

15620

10790

300

3.4

25

3.3

76.4

12770

7050

7.3

1.9

3.15

3.6

86.1

18030

12240

400

3.4

35

3.5

85.1

16460

8680

8.0

2.0

3.15

3.8

95.0

22350

14350

Electrical Data

Nom.
Cross-
Section
Area

 

Unarmoured Cables

Steel Wire Armoured Cables

 

Current Ratings

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 Copper Wire Screen
Per Core
1 sec

Short Circuit Rating of Copper Tape Screen Per Core
1 sec

Reac-tance

Induc-tance

Ground

Duct

Air

CU

AL

CU

AL

CU

AL

mm2

µ Ω/m

µ Ω/m

kA

pF/m

mA/m

kA

kA

µΩ/m

nH/m

A

A

A

25

727/1200

927/1538

3.6/2.3

216

0.43

2.6

0.5

123

390

140

115

125

95

145

115

35

524/868

668/1113

5.0/3.2

237

0.47

2.6

0.6

115

370

170

135

150

115

175

140

50

387/641

494/822

6.8/4.4

260

0.52

2.6

0.6

109

350

210

160

180

135

220

170

70

268/443

343/568

9.8/6.3

298

0.60

2.6

0.7

103

330

255

195

215

165

270

210

95

193/320

248/410

13.3/8.5

334

0.67

2.6

0.7

99

310

300

230

255

200

330

250

120

153/253

196/325

17.2/11.0

365

0.73

2.6

0.8

96

310

340

265

290

225

375

295

150

124/206

159/265

21.2/13.5

392

0.78

4.3

0.8

93

300

380

295

330

255

430

330

185

99.1/164

128/211

26.6/17.0

430

0.86

4.3

0.9

90

290

430

335

370

290

490

385

240

75.4/125

98/161

34.9/22.3

476

0.95

4.3

0.9

87

280

490

380

425

335

570

450

300

60.1/100

80/130

43.8/28.0

524

1.05

4.3

1.0

85

270

540

435

470

375

650

510

400

47.0/77.8

64/102

57.3/36.6

580

1.16

5.8

1.1

81

260

590

480

520

420

700

570