Tianjin Feiya Wire&Cable Co.,Ltd

Product Detail
Medium Voltage Cables to VDE 0276  Single Core Cables to VDE 0276
Detail

Application
The single core cables are designed for distribution of electrical power with nominal voltage Uo/U ranging from 3.8/6.6KV to 19/33KV and frequency 50Hz. They are suitable for installation mostly in power supply stations, indoors and in cable ducts, outdoors, underground and in water as well as for installation on cable trays for industries, switchboards and power stations.

Standards
DIN VDE 0276 Part 620 -622
HD 620 S1

Conductor: Stranded compacted circular copper or aluminium conductors according to IEC
60228 class 2 / VDE 0276 class 2 / VDE 0295 HD 383. All internal interstices of the conductor are filled with water blocking compound to prevent ingress of water through conductor during storage, handing, installation and operation of the cable.
Conductor Screen: The conductor screen consists of an extruded layer of non metallic, semi-conducting compound firmly bonded to the insulation to exclude all air voids. The screen has a minimum thickness of 0.3mm and the maximum volume resistivity of 500 Ohm-m at
90°C.
Insulation: Insulation is of extruded XLPE compound type 2XI1 according to DIN VDE 0207 part 22 and HD 620.1 with high degree of cross-linking, free from contaminants, air voids and heat resistant by dry cured process.
The nominal insulation wall thickness is shown in table 1.
Table 1. Insulation Thickness

Nom. Cross
Section Area

Insulation Thickness at Nom. Voltage

3.6/6KV
(Um=7.2kV)

6/10kV
(Um=12kV)

8.7/15kV
(Um=17.5kV)

12/20kV
(Um=24kV)

18/30kv
(Um=36kV)

mm²

mm

mm

mm

mm

mm

35

2.5

3.4

4.5

5.5

-

50

2.5

3.4

4.5

5.5

8.0

70

2.5

3.4

4.5

5.5

8.0

95

2.5

3.4

4.5

5.5

8.0

120

2.5

3.4

4.5

5.5

8.0

150

2.5

3.4

4.5

5.5

8.0

185

2.5

3.4

4.5

5.5

8.0

240

2.6

3.4

4.5

5.5

8.0

300

2.8

3.4

4.5

5.5

8.0

400

3.0

3.4

4.5

5.5

8.0

Insulation Screen: The insulation screen consists of extruded non metallic, semi-conducting compound extruded over the insulation. The extruded semi-conducting layer shall consist of bonded or cold strippable semi-conducting compound capable of removal for jointing or terminating.The minimum thickness is 0.3mm and the maximum volume resistivity of 500
Ohm-m at 90°C. The screen is tightly fitted to the insulation to exclude all air voids and can
be easily hand stripped on site.
Conducting Water Blocking Layer: The insulation screen may be coverd by semi- conductive water blocking tape which will swell up under the influence of moisture of water to ensure longitudinal watertightness.
Metallic Screen: Copper wires are applied over the conducting water blocking layer with a minimum diameter of 0.5mm. And over the copper wires, copper tape with minimum thickness of 0.1mm is applied helically with overlap. Total cross section of metallic screen layer is shown in table 2. The screen can withstand fault current to earth of 1000 A for one second at maximum temperature of 160°C. Minimum cross section of concentric conductor is according to DIN VDE 0273 & 0276 as shown.
Table 2. Minimum Total Cross Section of Metallic Screen

Nominal Cross-Section Area
Of Cable

Minimum Cross-Section of Metallic Screen

DC Resistance of the Copper Wire Screen

mm²

mm²

mm

Up to 120

16

1.06

150-300

25

0.72

400-630

35

0.51

800-1000

50

0.35

Separator / Water Blocking Layer: The metallic screen may be covered by non-conducting water blocking tape which will swell up under the influence of moisture of water to ensure longitudinal watertightness.
Separation Sheath (for armoured cable): The separation sheath comprises a layer of extruded PVC, PE or LSZH, applied under the armour. Thickness of separation sheath as shown in table 3.
 Table 3. Separation Sheath Thickness

Core Diameter

Approx.Thickess of Inner Sheath

mm

mm

>

<


35

45

1.4

45

60

1.6

60

80

1.8

80

-

2.0

Armour (for armoured cable): The armour consists of round aluminium wire armour applied helically over an extruded separation sheath.
Table 4. Round Armour Wire Diameter

Fictitious Diameter Under the Armour

Armour Wire Diameter

mm

mm

>

<


-

10

0.8

10

15

1.25

15

25

1.6

25

35

2.0

35

60

2.5

60

-

3.15

Outer Sheath: Overall sheath comprises a layer of extruded PE compound DMP2 according to HD620.1 and 2YM3 type to DIN VDE 0276 Part 3, or PVC compound DMV6 according to HD620.1 and YM5 to DIN VDE 0276 Part 6. Normal wall thickness is 2.5mm (1/500mm
18/30sq 2.6mm), suitable for exposure to sun-light or other local atmospheric environments and for the operating temperature of the cable.

PHYSICAL PROPERTIES:
Operating Temperature: up to 90°C
Temperature Range: -5°C ( PVC sheath ); -20°C ( PE sheath )
Short Circuit Temperature: 250°C (short circuit duration up to 5 seconds)
Bending Radius: 15 x OD (Cable without metal sheath)
30 x OD (Cable with aluminium sheath)
 Table 5. Nominal /Operating /Testing Voltages

Nominal Voltage Uo/U

Operating Voltage (max)

Testing Voltage

3.6/6KV

8KV

10KV

6/10KV

12KV

15KV

8.7/15KV

18KV

22.5KV

12/20KV

24KV

30KV

18/30KV

36KV

45KV

TYPE CODES:

Cores
N         According to VDE Standard (No abbreviation for copper conductor) A            Aluminium Conductor
2X       XLPE Insulation
Y         PVC Insulation

Screen
S         Screen of copper wires and copper tape, helically wound.
SE       Screen of copper wire plus copper tape over each individual cores, helically wound
(F)       Longitudinally waterproof screen.

Concentric Conductor Screen
C         Concentric conductor screen of copper wires and copper tape, helically wound.
CE      Concentric conductor screen of copper wire plus copper tape over each individual cores, helically wound.

Jacket
2Y       PE Jacket
Y         PVC Jacket
H         LSZH Jacket

Single Core 1.8/3KV (Um=3.6KV) Dimensional Data

Nom. Cross- Section Area


Nom. Insulation Thickness


Copper Tape Thickness

Copper Wire Screen Area*


Nom. Sheath Thickness


Nom. Overall Diameter

Approx. Weight

N2XSY/ N2XSH Cu

NA2XSY/ NA2XSH Al


N2XS2Y Cu


NA2XS2Y Al


N2XS (F) 2Y Cu

NA2XS (F)
2Y Al

mm²

mm

mm

mm²

mm

mm

kg / km

kg / km

kg / km

kg / km

kg / km

kg / km

25

2.0

0.1

16

1.4

13

500

180

480

140

500

230

35

2.0

0.1

16

1.4

14

620

280

600

240

620

330

50

2.0

0.1

16

1.4

15

700

380

750

290

750

430

70

2.0

0.1

16

1.5

17

900

480

800

380

1000

560

95

2.0

0.1

16

1.5

19

1200

590

1050

460

1300

670

120

2.0

0.1

16

1.6

21

1450

700

1300

550

1500

800

150

2.0

0.1

25

1.6

22

1700

800

1550

650

1800

900

185

2.0

0.1

25

1.7

24

2050

850

1900

750

2150

950

240

2.0

0.1

25

1.8

27

2550

1050

2350

900

2650

1150

300

2.0

0.1

25

1.8

29

3150

1250

2950

1050

3250

1350

400

2.0

0.1

35

1.9

32

3950

1550

3800

1450

4100

1650

500

2.2

0.1

35

2.0

35

5000

2000

4800

1800

5200

2150

630

2.4

0.1

35

2.2

38

6200

2200

6300

2100

6400

2350

800

2.6

0.1

35

2.3

44

8000

2900

7900

2800

8200

3050

*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.

Electrical Data

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 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

µΩm

kA

pF/m

mA/m

kA

kA

µΩ/m

nH/m

µΩ/ m

µΩ/ m

25

727/1200

929/1538

3.6/2.3

222

0.32

2.6

0.3

131

185

345

535

936

1544

952

1554

35

524/868

668/1113

5.0/3.2

251

0.35

2.6

0.4

122

178

327

524

679

1121

695

1131

50

387/641

494/822

6.8/4.4

281

0.39

2.6

0.4

116

172

313

514

511

834

527

844

70

268/443

343/568

9.8/6.3

341

0.45

2.6

0.5

110

165

300

495

364

583

386

597

95

193/320

248/410

13.3/8.5

397

0.50

2.6

0.5

104

160

287

485

272

427

300

446

120

153/253

196/325

17.2/11.0

430

0.55

2.6

0.6

104

159

280

475

225

345

257

367

150

124/206

159/265

21.2/13.5

464

0.59

4.3

0.6

100

156

274

465

193

287

229

313

185

99.1/164

128/211

26.6/17.0

513

0.65

4.3

0.7

98

154

267

459

165

237

206

267

240

75.4/125

98/161

34.9/22.3

573

0.70

4.3

0.9

94

150

260

455

140

191

185

226

300

60.1/100

80/130

43.8/28.0

652

0.72

4.3

1.0

91

147

253

445

128

163

174

203

400

47.0/77.8

64/102

57.3/36.6

727

0.75

5.8

1.1

90

147

248

435

113

141

164

184

500

36.6/60.5

51/81

72.3/46.2

754

0.79

5.8

1.2

89

145

245

425

105

124

158

171

630

28.3/46.9

42/64

91.2/58.3

786

0.87

5.8

1.3

86

143

243

415

97

110

151

160




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