230 kv XLPE μονωμένο καλώδιο τροφοδοσίας από κράμα μολύβδου

Basic Structure

Nominal Thickness

mm

Nominal Outer Diameter

mm

1. Water blocking five(5) Milliken  (segmental) copper conductor

/

61.0±1.0

2.Semi-conductive tape

0.14

62.0

3.Conductor screen (wrapping + extruding)

2.5

66.0

4.XLPE insulation

25.0

116.0(-1.5,+1.0)

5.Insulation screen  

1.5

119.0

6.Semi-conductive water blocking tape

2.0

121.0

7.Lead alloy E sheath

4.0

129.0

8.Anti-corrosive layer (bitumen)

0.25

129.5

9.HDPE Outer sheath

5.0

139.5

10.Semi-conductive layer (coating)

139.5±3.0

NOMINAL VOLTAGE KV DESCRIPTION

Particular

UNIT

REQUIRED

230kV 1x2500

OFFERED

1

Maker`s Name

 Beijing Huyan Gaoke CABLE 

Beijing Huayuan

2

Standard specifications applying to

 IEC STANDARD 

2.a

Cable

IEC 62067 & IEC 60811& IEC 60229

IEC 62067 & IEC 60811& IEC 60229

2.b

Copper

IEC 60228

IEC 60228

2.c

Cross linked polyethylene

IEC 62067 & IEC 60811

IEC 62067 & IEC 60811

2.d

Protective covers

IEC 62067 & IEC 60229

IEC 62067 & IEC 60229

3

Type of cable

Cu/XLPE/LEAD/HDPE

Cu/XLPE/LEAD/HDPE

4

Rated voltage

kv

130/230

130/230

5

Max. continuous operating voltage

Kv

245

245

6

Max. field strength at nominal voltage

Kv/mm

4 at insulation surface 6.94 at inner insulation surface

3.94 at insulation surface; 6.99 at inner insulation surface

7

Number of cores/cable

Single cores

Single cores

8

Form of conductor

Milliken Stranded copper Conductor With Swelling Powder

Milliken Stranded copper Conductor With water blocking tape

9

Nominal cross section/core

mm2

2500

2500

10

Number and diameter of strands/core

mm

5 Segmental X61 wires X 3.5 mm wire diameter

5 Segmental ×91 wires × 2.76 mm nominal wire diameter

11

Thickness of layers between conductor and outer jacket

11.a

Semi-conductor Smoothing tape over conductor with 30 % over lap and the thickness is (0.15)

Nominal                         

Minimum

0.15 

0.1

Semi-conductor water blocking tape over conductor with 20 % over lap and the thickness is

0.3

0.2

11.b

Semi-conductor water blocking tape over SCT (item 11 .a) with 30 % over lap and the thickness is (0.2)      Nominal                                                                                               

Minimum

0.2  

0.18

Semi-conductor tape over SCTWBT

0.14

0.1

11.c

Extruded Semi-conductor layer over SCWBT(item 11.b)

Nominal                                                                                        

Minimum

mm

1.5

1.3

Extruded Semi-conductor layer over SCT

2.2

1.2

11.d

Insulation Nominal                                                                                                   

Minimum

mm

25

22.5

25.0

22.5

11.e

Extruded Semi-conducting layer over insulation Nominal

Minimum

mm

 1.5

1.3

1.5

1.2

11.f

Separator layer before lead sheath with 30 % over lap and the thickness is (2)

Nominal                                                                                 

Minimum

mm

2

1.8

Tow layer

30% Gap

2.0

1.5

11.g

Method of conductor tightness

1- swelling powder inside conductor layers   

2- swelling tape between segmental   

3- swelling tape over conductor  

 4- swelling tape over outer semi-conductive

1- water blocking rope core                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   2- water blocking tape between segmental                                                                                                                                                                                                                                                                                                                  3- water blocking tape over conductor

12

Thickness of lead sheath Nominal Minimum Total C.S.A

mm 

mm 

mm2

4 

3.7

1675

4.0

3.7

1570(calculated value)

13.a

Material & thickness of outer protective anti-corrosion layer Nominal                

Minimum

mm

HDPE 5  

3.8

HDPE  5.0

3.8

13.b

semi-conductive extruded layer or graphite coating Nominal

mm

Semi-conductive graphite coating 0.05

Semi-conductive graphite coating 0.05

14

Nominal overall diameter of cable Nominal(approximate)

mm

147

139.5

15

Weight of cable/1000m

49650 kg(approx.)

15.a

Copper (Conductor)

Kg/km

22500 ± 1%

22500± 1%

15.b

lead

Kg/km

18950

18770(approx.)

15.c

Total weight of cable

Kg/km

52110

49650 kg(approx.)

16

Length of cable supplied on each drum

M

500 (-0 + 5%)

500 (-0 + 5%)

17.a

Net weight of loaded drum(Approximate)

Kg

26055

24825

17.b

Gross weight of loaded drum(Approximate)

Kg

28055

27625

18

Dimension of drum

18.a

Diameter

m

4.0 (Steel)

4.0 (Steel)

18.b

Width

m

2.2

3.2

19

Method of laying and pulling erection

By mean of pulling eye attached to the conductor

By mean of pulling eye attached to the conductor

20

Min. bending radius

20.a

In soil

mm

4410

3490

20.b

In duct

mm

5145

3490

20.c

Placed in position: Without former  

With former

mm

mm

2940                                                                                                                                                                                                                                            2205

2790

2790

21

Max. Safe pull on cable during installation.

Kg

15000 on pulling eye

15000 on pulling eye

22

Summary of tests standards at works as specified

22.a

Routine test

IEC 62067& EETC Specification

IEC 62067& EETC Specification

22.b

Sample test

IEC 62067& EETC Specification

IEC 62067& EETC Specification

22.c

Type test

IEC 62067& EETC Specification

IEC 62067& EETC Specification