High-Voltage XLPE insulated power cable

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400sq mm power cable High-voltage 110~220KV XLPE insulated electrical cable copper cable made in China
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400 sq mm power cable High-voltage 110~220KV XLPE insulated electrical cable copper cable made in China  

Brief introduction of the 110~220KV XLPE high-voltage cable products

1. The cross-linkage PE insulated and wrinkled aluminum wrapper waterproof PVC sheathed power cable.

Type

YJLW02,YJLLW02

Specification

240mm2~3000mm2

Voltage

110~220KV

Usage

Suitable for damp areas and the places with a lower underground water level and to be used underground, in tunnels or pipes. Such cables bear a bigger pulling force and pressure.

2. The cross-linkage PE insulated and wrinkled aluminum wrapper waterproof PE sheathed power cable.

Type

YJLW03,YJLLW03

Specification

240mm2~3000mm2

Voltage

110~220KV

Usage

Suitable for the places with a higher underground water level and to be used underground, in the tunnels or pipes. Such cables bear a bigger pulling force and pressure.

Structure diagram of the 110KV~220KV XLPE high-voltage cable product

  1. Circular or sliced conductor

  2. Conductor screen

  3. Insulator

  4. Insulated screen

  5. Waterproof buffer layer

  6. Metal sheath

  7. Outer-sheath & semiconducting layer

Specific property for usage of 110KV~220KV XLPE high-voltage cable

  1. Cable’s conductor highest working temperature is allowed up to 90, and overload when meet an emergency is 130 ,When short circuit (in 5 seconds) the highest temperature is 250

  2. When installing or laying cable, the ambient temperature should be less than -20, and have to give a preheat to cable.

  3. The minimum bending diameter:

                Cable type

Bending diameter

Metal sheathed

After laying

30D0

During laying

40D0

Note: In form, D0 is a real test value to cable’s outer diameter.

 4.  Allowed biggest axial traction force to outer diameter when laying cable (not consider the radial lateral-pressure at bent section) T=K×core NO. ×section (kg), in formula, the coefficient K value should be: the copper core get 7, the aluminum core get 4.

5.   Allowed biggest lateral-press P, when cable is being bent

The single core cable is required P500kg/m.

P=T/R (T is indicated axial traction force; R is indicated radius of bent-wheel), Knowing from above formula, as the traction force is made up by length and weight of cable. So it lets P to applying requirement as above. Then the diameter of bent-wheel should be widened.

6.  Cable laying is not being restricted by drop.

The structure parameter and functions table to 110KV, 220KV XLPE high-voltage cable products

  1. Rated voltage 64/110KV XLPE copper core and PE insulated wrinkled aluminum wrapper waterproof layer PE(or PVC) sheathed power cable.

Type: YJLW02(or YJLW03)   Specifications: 1×240mm2~1×1200mm2

Conductor section mm2

Conductor diameter mm

Insulator thickness mm

Aluminum wrapper mm

Sheath thickness mm

Cable’s outer diameter mm

kg/km

Cable’s weight

PVC sheath

PE sheath

240

18.4

19.0

2.0

4.5

89.9

8348

7708

300

20.6

18.5

2.0

4.5

91.1

8990

8341

400

23.8

17.5

2.0

4.5

92.3

9731

9073

500

26.6

17.0

2.0

4.5

94.5

10882

10208

630

30.0

16.5

2.0

4.5

96.9

12352

11660

800

34.0

16.0

2.0

4.5

99.9

14168

13454

1000

38.2

16.0

2.0

4.5

105.0

16460

15708

1200

42.6

16.0

2.0

4.5

109.4

18685

17900

Conductor section mm2

(Ω/km)

Conductor resistance

Capacitance μF/km

Carrier current capacity A

Short circuit current

20℃DC

90℃AC

Conductor

Metal sheath

240

0.0754

0.0961

0.135

543

20

22

300

0.0601

0.0766

0.146

597

25

22

400

0.0470

0.0599

0.165

657

33

22

500

0.0366

0.0467

0.182

718

41

23

630

0.0283

0.0361

0.201

779

52

24

800

0.0221

0.0282

0.223

837

66

25

1000

0.0176

0.0224

0.246

914

83

26

1200

0.0151

0.0193

0.266

962

99

27

Note: Current carrier capacity is made up by laying in soil abreast. The axial distances between cables are 200mm. Soil temperature is 25. The working temperature of cable is 90℃. The coefficient of soil heat-resistance is 1.2km/W.

  1. Rated voltage 127/220KV XLPE copper core and PE insulated wrinkled aluminum wrapper waterproof layer PVC (or PE) sheathed power cable.

Type: YJLW02(or YJLW03)   Specifications: 1×400mm2~1×2500mm2

Conductor section mm2

Conductor diameter mm

Insulator thickness mm

Aluminum wrapper mm

Sheath thickness mm

Cable’s outer diameter mm

kg/km

Cable’s weight

PVC sheath

PE sheath

400

23.8

27

2.4

5.0

128.7

14348

13369

500

26.6

27

2.4

5.0

131.5

15697

14696

630

30.0

26

2.4

5.0

132.8

17064

16052

800

34.0

25

2.5

5.0

134.9

18913

17885

......

1800

52.1

24

2.7

5.0

152.0

30214

29050

2000

55.2

24

2.8

5.0

155.3

32548

31359

2200

57.5

24

2.8

5.0

157.6

34643

33436

2500

61.2

24

2.9

5.0

161.5

37958

36719

Conductor section mm2

(Ω/km)

Conductor resistance

Capacitance μF/km

Carrier current capacity A

(KA/3S)

Short circuit current

20DC

90AC

Conductor

Metal sheath

400

0.0470

0.0613

0.120

689

33

46

500

0.0366

0.0485

0.127

763

41

47

630

0.0283

0.0384

0.139

839

52

48

800

0.0221

0.0311

0.153

918

66

51

......

2000

0.0090

0.0128

0.217

1282

165

67

2200

0.0083

0.0121

0.223

1310

182

68

2500

0.0073

0.0110

0.233

1367

206

73

Note: Current carrier capacity is made up by laying in soil abreast. The axial distance between cables are 200mm. Soil temperature is 25. The working temperature of cable is 90℃. The coefficient of soil heat-resistance is 1.2km/W.


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