Medium Voltage Cables 

Medium Voltage Cables to BS 6622

Three Core Cables to BS 6622

Three Core 12.7/22KV (Um=24KV) 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

35

5.5

16

2.7

51

3750

2880

5.2

1.5

2.5

2.8

62.3

6870

6140

50

5.5

16

2.8

54

4240

3250

5.4

1.5

2.5

2.9

65.6

7710

6810

70

5.5

16

2.9

58

5050

3650

5.9

1.6

2.5

3.0

69.0

8710

7370

95

5.5

16

3.0

62

6010

4110

6.2

1.7

2.5

3.2

73.1

10000

8130

120

5.5

16

3.1

65

6990

4660

6.6

1.7

3.15

3.3

77.7

12040

9730

150

5.5

25

3.2

68

8130

5330

6.9

1.8

3.15

3.4

81.7

13550

10750

185

5.5

25

3.3

72

9410

5870

7.4

1.9

3.15

3.6

85.5

15150

11610

240

5.5

25

3.5

79

11490

6880

7.8

2.0

3.15

3.7

91.3

17710

12840

300

5.5

25

3.7

84

13710

7890

8.2

2.0

3.15

3.9

96.0

20170

14360

400

5.5

35

3.9

91

17230

9440

9.0

2.2

3.15

4.1

104.8

24520

16480

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

µΩ/m

µΩ/m

kA

pF/m

mA/m

kA

kA

µΩ/m

nH/m

A

A

A

35

524/868

668/1113

5.0/3.2

168

0.67

2.6

0.7

129

410

170

135

155

120

180

145

50

387/641

494/822

6.8/4.4

183

0.73

2.6

0.8

122

390

210

160

185

140

225

175

70

268/443

343/568

9.8/6.3

207

0.83

2.6

0.8

115

370

255

195

225

170

275

215

95

193/320

248/410

13.3/8.5

229

0.92

2.6

0.9

110

350

295

230

260

205

330

260

120

153/253

196/325

17.2/11.0

249

1.00

2.6

0.9

106

340

335

260

300

235

380

300

150

124/206

159/265

21.2/13.5

266

1.06

4.3

1.0

103

330

375

290

335

265

430

335

185

99.1/164

128/211

26.6/17.0

289

1.16

4.3

1.0

100

320

420

330

380

300

490

390

240

75.4/125

98/161

34.9/22.3

318

1.27

4.3

1.1

95

300

480

380

430

345

570

460

300

60.1/100

80/130

43.8/28.0

348

1.39

4.3

1.2

93

300

530

425

480

385

650

520

400

47.0/77.8

64/102

57.3/36.6

383

1.53

5.8

1.3

87

280

590

480

520

420

700

570