Cáp điện 1x1000 mm2 38/66 (72.5) kV CU / XLPE / LS / CWS / HDPE

Quality Control Standard

ISO 9001

Quality Management Systems

ISO 14001

Environmental Management Systems

Component Material Standard

IEC 60228

Conductors of insulated cables

Cable Standard

IEC 60840

Power cables with extruded insulation and their accessories for rated voltages  above 30 kV (Um = 36 kV) up to 150 kV (Um = 170 kV) – Test methods and requirements

Structure

   Nominal thickness mm

  Nominal diameter mm

   1 Five(5) Milliken (segmental) copper conductor

/

38.8±0.6

   2 Semi-conductive tape

0.14

39.4

   3 Conductor screen(wrapping & extruding)

2.0

42.8

   4 XLPE insulation

12.0

66.8±1.5

   5 Insulation screen

1.0

68.8

   6 semi-conductive water blocking tape

2.0

70.8

   7 lead sheath

3.0

76.8

   8 Semi-conductive water blocking tape

2.0

78.8

   9 Copper wire screen with  

c    opper tape wrapping(gap)

       Nominal sectional area 120.0mm2

81.8

   10 non-conductive water blocking tape

0.6

82.8

   11 HDPE outer sheath

4.5

91.8

   12 semi-conductive layer(extruding)

0.5

92.8±3.0

No

DESCRIPTION

UNIT

VALUEREQUIRED

1

Manufacturer

Beijing Huayuan Gaoke Cable.Co.,Ltd.

2

Cable size

mm2

1000(nominal)

3

Cable type

CU/XLPE/LS/CWS/HDPE

4

Voltage Grade(U0/U(Um)

KV

38/66(72.5)

5

Reference Standard

IEC 60840

6

No. and cross sectional area of conductor

1C 1000sqmm

7

Conductor material

Copper

8

Shape

Five(5) Milliken (segmental)

9

Nominal diameter of conductor

mm

38.8

10

Conductor Screen materials

Simi-conduction tape + Extruded semi-conducting compound

11

Nominal thickness of conductor screen

mm

2.0(wrapping + extruding)

12

Insulation material

super clean XLPE

13

Nominal thickness of insulation

mm

12.0

14

Nominal diameter over insulation

mm

66.8

15

Insulation screen material

Extruded semi-conducting compound

16

Nominal thickness of insulation screen

mm

1.0

17

Metallic Screen material

copper wire with copper tape binder tape (gap)

18

Short circuit current rating(t=1.0sec)

Of conductor

kA

144

Of metallic screen

kA

≥25(lead sheath with copper wire)

19

Outer sheath material

HDPE

Colour

yellow

20

Nominal thickness of outer sheath

mm

4.5

21

Nominal thickness of extrude semi-conductive layer

mm

0.5

22

Nominal overall diameter of cable

mm

92.8

23

Approx. weight of cable

kg/km

21860

24

Minimum bending radius

mm

2320

25

Max.D.C. Conductor resistance at20`C

Ω/km

0.0176

26

Nominal capacitance per phase

uF/km

0.30

27

Max. current rating in air at  40° C

A

1442(1 circuit ,phase spacing  250, flat formation, a point earthed or cross connected)

28

Max. current rating in ground at 25° C

A

1273circuit ,phase spacing  250, flat formation, a point earthed or cross connected ,depth of laying 1200 mm ,thermal resistivity of soil 1.0 k.m/W)

29

Max. conductor temperature on continuous

℃

90

30

Max. conductor temperature in short circuit

℃

250(not exceed 5s)

No.

Test item

Routine tests

1

Partial discharge test

2

Voltage test

3

electrical test on oversheath of the cable

Sample tests

1

conductor examination

2

measurement of electrical resistance of conductor and of metal screen/sheath

3

measurement of thickness of insulation and oversheath

4

measurement of thickness of metal sheath

5

measurement of diameters

6

hot set test for XLPE  insulation

7

measurement of capacitance