ht xlpe cables catalogue.pdf

7/27/2019 HT XLPE Cables Catalogue.pdf

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KEC

INTERNATIONALLTD.

RPGENTERPRISES

KEC is one of the oldest players in the industry and global leader in the Infrastructure Engineering, Procurement and Construction

space. Established in 1945, KEC has a significant presence in the segments of Power Transmission & Distribution, Cabling, Railway,

Telecom and Water Resource management. KECs strengths lie in Engineering, Design, Manufacture and Testing, supply of

transmission towers, telecom towers, cables and Construction of turnkey infrastructure projects. KECs focused approach towards

project management enables the creation of world class products, innovative solutions, customized to overcome extreme terrain

and climate. With proven technical prowess in handling mega projects and superior project management expertise, KEC has made

an indelible mark on the world map by constantly and consistently reengineering itself to retain its position of leadership in theareas of quality, technology, capacity and capability.

RPG Enterprises is one of Indias largest business conglomerates. Since its inception in 1979, RPG Enterprises has been one

of the fastest growing business houses in India. RPG Enterprises has diverse businesses under its fold ranging from Power,

Tyres, Infrastructure, IT to Pharma. The Groups management comprises individuals extensively qualified and experienced in

their domain areas. RPGs wide ranging business invite growing returns and high esteem in the eyes of all its stakeholders. The

Group lives by values of keen entrepreneurial skills, performance and excellence.


3/32

1

RPG Cables, a division of KEC International Limited has established itself as

one of the leading manufacturers of Power, Control & Telecommunication

cables in India. One of the oldest cable manufacturing company (1958), we

have been serving the industries with quality cables for over 5 decades. The

state-of-the art manufacturing plants are located at Thane for HT cables

upto 33 kV and EHV cables upto 132 kV and Silvassa for LT cables upto 1.1

kV (power and control). The manufacturing facility at Mysore manufactures

LT Power and Control Cables, apart from Telecom Cables (Fiber Optic & Jelly

Filled), Instrumentation, Fire Survival and Signaling Cables. RPG Cables also

offers expertise in Turnkey contracts involving cable laying, jointing, testing

and commissioning. To keep pace with the changing needs of the customers

and requirement of cables for voltage grades above 132 kV, the company is

coming up with a new manufacturing unit near Halol, Gujarat with capability

to manufacture cables up to 400 kV. The brand name Asian is synonymous

with stringent norms in quality, environment and safety management. The

plants have been ISO 9000 and ISO 14000 certified.

RPG cables has been making major export thrust in keeping with its global

aspirations. We match international quality standards and cables can be

designed to comply with required international standards. The division

has also been given recognition by the Govt. of Maharashtra for achieving

excellence in Exports.

COMPANYPROFILE Thane Plant

Silvassa Plant

Mysore Plant


4/32

HV

CABLE

STECHNICALCATALO

GUE

2

ELEMENTS INHV CABLES

CABLE CONSTRUCTION

Conductor

Stranded compacted circular conductors are composed of

Electrolytic grade high conductivity Aluminium wires or Copper,

Circular, stranded with high compactness.

Conductor Screening / Shielding

Conductors for cables rated above 3.3 kV are screened with anextruded layer of semiconducting compound . This eliminates

the chance of electrical discharge at the interface between

conductor and insulation.

Insulation

The insulation is of natural, chemically cross linked polyethylene

with high di-electric strength is extruded over semiconducting

conductor screening. Thickness of insulation is as per the

relevant tables.

Insulation screeningCables rated above 3.3 kV will have a screening consisting

of non metallic part, in combination with a metallic part over

the insulation. The non-metallic part of the screening consists

TYPICAL CROSS-SECTIONAL SKETCHES

2

CONDUCTORAluminium/Copper

CONDUCTOR SCREEN

INSULATION

NON METALLIC INSULATION SCREEN

METALLIC INSULATION SCREEN

PVC INNER SHEATH

GALVANISED STEEL ARMOUR

PVC OUTER SHEATH

FILLERS


5/32

3

of either a semiconducting tape applied helically or a layer of

extruded semi-conducting compound or both. The conductor

screening, XLPE insulation and the non-metallic part of

insulation screening are all extruded in one operation by

TRIPLE EXTRUSION which eliminates the formation of microvoids during the extrusion and curing resulting in longer life

of cables.

Over this layer a bare annealed copper tape / copper wire

is applied.

Laying up

Insulated conductors of three cores are laid up together,

interstices filled up with non hygroscopic fillers to make the

cable circular.

The phase identification of three core cable is done either

by coloured / numbered strips applied on the cores or by the

numerals printed on the cores.

Inner Sheath

The cable cores are provided with a common covering of

wrapped plastic tapes or by an extruded PVC sheath or

pressure extruded PVC sheath, as per the requirement of the

customer.

Armouring

GI Round wire / Flat strip / Double steel tape armouring is

applied over the inner sheath in case of three core cables. The

direction of lay of armouring is opposite to that of cores.

For single core cables non magnetic Aluminium armouring is

applied over non metallic part of insulation screening or over

the inner sheath.

Outer sheathThe cables are provided with an extruded PVC / PE TYPE

ST7 / LSZH outer sheath over the armour. For Single core

unarmoured cables the outer sheath is extruded over the non

magnetic metallic part of insulation screening. Outer sheath

is generally of Black colour, but any colour as per customer

requirement can be provided.

3


6/32

HV

CABLE

STECHNICALCATALO

GUE

4

ELEMENTS INHV CABLES

QUALITY ASSURANCE AND TESTING

Asian brand cables of RPG Cables division of KEC international

Ltd. are manufactured with latest state of the art machinery

and testing facilities. The experienced technical staff ensureshigh quality standards at all the levels of processing of the

cables from Raw material stage till final testing.

The cables are tested in accordance with IS:7098

(Part 2) -1985 / IEC / BS / Customer Specifications and internal

Company Standards .

Following Routine test are carried out on each of the cable

before offering cables for inspection

i. Conductor Resistance Test

ii. Partial Discharge Test

iii. High Voltage Test

Elements Material Standards

Conductor Compacted stranded - Class 2 , Annealed

Plain Copper / Aluminium

IS:8130 / IEC: 60228 / BS 6360

Conductor Screen Extruded Semiconducting Compound IS:7098 part 2, IEC: 60502 part 2,

BS:6622, BS:7835

Insulation XLPE IS:7098 part 2, IEC: 60502 part 2,

BS:6622, BS:7835

Insulation Non - Metallic Screen Extruded Semiconducting Compound IS:7098 part 2, IEC: 60502 part 2,

BS:6622, BS:7835

Insulation metallic Screen Copper Wire / Tape IS:7098 part 2, IEC: 60502 part 2,

BS:6622, BS:7835

Fillers Non Hygroscopic PVC / Polypropylene

Fiber

Inner Sheath / Bedding PVC ST2/ Polyethylene ST 7 IS:7098 part 2, IEC:60502 part 2,BS:6622, BS:7835

Armour GI / Aluminium Round wire / Flat strip /

Double steel tape

IS:7098 part 2, IS:3975 IEC:60502 part 2,

BS:6622, BS:7835

Outer Sheath PVC ST2 / FR PVC / FRLS PVC /

Polyethylene ST 7/ LSZH

IS:7098 part 2, IEC:60502 part 2,

BS:6622, BS:7835

Construction of HT Cables

4


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5

The cables are subjected to following Type Tests as per

IS 7098 (Part 2) -1985 / IEC / BS / Customer Specifications.

i. Electrical Type tests

ii. Non Electrical Type Tests

iii. Special Tests

At RPG Cables our testing labs are of the highest standards,

well equipped with latest equipments for accurate results and

quality controls. Following In house tests can be carried out

1. Oxygen Index and Temperature Index tests as per

ASTM-D-2863 / IS -10810, part-58

2. Flammability Characteristics of cable as per

IEC-332(Part-I), IEC-332(part-III) and IEEE-383/IS -10810,

part-53

3. Flammability Characteristics of Cable as per Swedish

standard SS4241475 Class F3

4. Determination of amount of halogen acid gas

evolved during combustion of outer sheath as per

IEC-754(Part-I) / IS-10810, part-59

5. Determination of smoke generation of outer sheath under

fire as per ASTM-D-2843

Minimum Bending Radii of HT XLPE Cables

1 core cable Multicore Cable

6.6 kV to 11 kV - 15 x D 15 x D

Above 11 kV - 20 x D 15 x D

Where D is Overall diameter of Cable

Guide lines for Cable Laying

5


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6

HVCABLESTECHNICALCATALOGUETABLE1

:

COMMONPARAMETER

S

NominalAre

a

ofConducto

r

Aluminium

Conductor

CopperConductor

NominalThicknessofInsulation

Minimum

No.

ofwires

D.C.

Resis-

tance

Shortckt

rating

Minimum

No.

ofwires

D.C.

Resis-

tance

Sho

rtckt

ra

ting

1.9

/3.3and3.3

/3.3

kV

3

.8/6.6

kV

6.3

5/11kV

11/11kV

12.7

/22kV

19/33kV

(sq.mm)

(Nos.)

(Ohm/km)

(kA/se

c.)

(Nos.)

(Ohm/km)

(kA

/sec.)

SingleCore

armoured

cable(mm)

SingleCore

unarmoured

and3core

cable(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

3535

6

0.8

680

3.29

6

0.5

240

5

.01

2.5

2.2

-

-

-

-

-

5050

6

0.6

410

4.70

6

0.3

870

7

.15

2.5

2.2

2.8

3.6

5.5

6.0

-

7070

12

0.4

430

6.58

12

0.2

680

10.0

1

2.5

2.2

2.8

3.6

5.5

6.0

-

9595

15

0.3

200

8.93

15

0.1

930

13.5

9

2.5

2.2

2.8

3.6

5.5

6.0

8.8

120

120

15

0.2

530

11.3

0

18

0.1

530

17.1

6

2.5

2.2

2.8

3.6

5.5

6.0

8.8

150

150

15

0.2

060

14.1

0

18

0.1

240

21.4

5

2.5

2.2

2.8

3.6

5.5

6.0

8.8

185

185

30

0.1

640

17.4

0

30

0.0

991

26.4

6

2.5

2.2

2.8

3.6

5.5

6.0

8.8

240

240

30

0.1

250

22.6

0

34

0.0

754

34.3

2

2.5

2.2

2.8

3.6

5.5

6.0

8.8

300

300

30

0.1

000

28.2

0

34

0.0

601

42.9

0

2.5

2.2

3.0

3.6

5.5

6.0

8.8

400

400

53

0.0

778

37.6

0

53

0.0

470

57.2

0

2.6

2.2

3.3

3.6

5.5

6.0

8.8

500

500

53

0.0

605

47.0

0

53

0.0

366

71.5

0

2.8

2.4

3.5

3.6

5.5

6.0

8.8

630

630

53

0.0

469

59.2

2

53

0.0

283

90.0

9

3.0

2.6

3.5

3.6

5.5

6.0

8.8

800

800

53

0.0

367

75.2

0

53

0.0

221

11

4.4

0

3.3

2.8

3.5

3.6

5.5

6.0

8.8

1000

1000

53

0.0

291

94.0

0

53

0.0

176

14

3.0

0

3.5

3.0

3.6

3.6

5.5

6.0

8.8


9/32


10/32


11/32

9

Nominal

Areaof

Conductor

Nominal

Thickness

of

O/Sheath

Aluminium

(A2XY)

Copper(2XY)

Approx.

overall

dia.of

cable

Approx.

weightof

cable

Approx.

A.C.

Resistance

at90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase

ContinuousCurrentRating

Approx.

overall

dia.of

cable

Approx.

weightof

cable

Approx.

A.C.

Resistance

at90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase


InDuctat

30C

In

Ground

at30C

InAirat

40C

InDu

ctat

30

C

InGround

at30C

InAirat

40C

mm

mm

mm

kg/km

ohm/km

ohm/km

MicroFarad/

km

Amps.

Amps.

Amps.

mm

kg/km

ohm/km

ohm/km

MicroFarad/

km

Am

ps.

Amps.

Amps.

TABLE6

:12.7

/22kV,

SINGLECO

RE,

XLPEINSULATEDANDPVCSHEATHED,

SCREEN

ED,

UNARMOUREDCABL

ES.

(A2XY/2XY)

5050

2.0

27

681

0.8

221

0.1

394

0.1

65

120

135

170

27

973

0.4

937

0.1

386

0.1

66

150

175

215

7070

2.0

29

786

0.5

683

0.1

291

0.1

86

145

165

210

29

1204

0.3

421

0.1

291

0.1

86

185

210

270

9595

2.2

31

933

0.4

106

0.1

233

0.2

06

170

195

255

31

1513

0.2

466

0.1

233

0.2

06

220

255

330

120

120

2.2

32

1036

0.3

248

0.1

185

0.2

22

195

225

295

32

1778

0.1

958

0.1

171

0.2

26

250

290

380

150

150

2.2

33

1150

0.2

647

0.1

139

0.2

39

215

250

330

34

2058

0.1

590

0.1

152

0.2

40

280

320

430

185

185

2.2

35

1298

0.2

110

0.1

097

0.2

59

245

280

380

35

2434

0.1

276

0.1

089

0.2

61

315

360

490

240

240

2.2

37

1510

0.1

613

0.1

052

0.2

84

280

325

450

37

2960

0.0

979

0.1

045

0.2

87

365

420

580

300

300

2.2

39

1721

0.1

296

0.1

024

0.3

06

320

370

520

40

3605

0.0

789

0.1

023

0.3

13

410

470

660

400

400

2.4

43

2088

0.1

016

0.0

982

0.3

46

360

420

610

43

4474

0.0

629

0.0

979

0.3

47

460

530

770

500

500

2.6

47

2553

0.0

800

0.0

959

0.3

88

410

480

710

47

5616

0.0

505

0.0

957

0.3

89

520

600

890

630

630

2.6

50

3027

0.0

634

0.0

926

0.4

29

470

550

820

51

6998

0.0

410

0.0

932

0.4

32

580

680

1020

800

800

2.8

55

3665

0.0

513

0.0

907

0.4

75

520

610

950

-

-

-

-

-

-

-

-

1000

1000

3.0

59

4409

0.0

427

0.0

877

0.5

24

580

680

1080

-

-

-

-

-

-

-

-

TABLE7

:19/33kV,

SINGLECOR

E,

XLPEINSULATEDAND

PVCSHEATHED,

SCREENE

D,

UNARMOUREDCABLES.

(A2XY/2XY)

9595

2.2

36

1220

0.4

106

0.1

327

0.1

58

170

195

255

36

1800

0.2

466

0.1

327

0.1

58

220

255

330

120

120

2.2

38

1334

0.3

248

0.1

293

0.1

69

195

225

295

38

2078

0.1

957

0.1

279

0.1

71

250

290

380

150

150

2.2

39

1458

0.2

646

0.1

244

0.1

81

215

250

330

39

2367

0.1

589

0.1

238

0.1

82

280

320

430

185

185

2.4

41

1658

0.2

109

0.1

197

0.1

95

245

280

380

41

2795

0.1

274

0.1

189

0.1

96

315

360

490

240

240

2.4

43

1889

0.1

612

0.1

147

0.2

12

280

325

450

44

3341

0.0

976

0.1

154

0.2

14

365

420

580

300

300

2.6

46

2158

0.1

294

0.1

128

0.2

27

320

370

520

46

4048

0.0

786

0.1

111

0.2

32

410

470

660

400

400

2.6

49

2519

0.1

014

0.1

064

0.2

55

360

420

610

49

4906

0.0

625

0.1

061

0.2

56

460

530

770

500

500

2.8

53

3020

0.0

797

0.1

035

0.2

84

410

480

710

53

6084

0.0

501

0.1

033

0.2

85

520

600

890

630

630

2.8

56

3525

0.0

630

0.0

998

0.3

12

470

550

820

57

7499

0.0

404

0.1

002

0.3

14

580

680

1020

800

800

3.0

61

4204

0.0

508

0.0

972

0.3

44

520

610

950

-

-

-

-

-

-

-

-

1000

1000

3.2

65

4990

0.0

421

0.0

938

0.3

77

580

680

1080

-

-

-

-

-

-

-

-


12/32


13/32


14/32


15/32

13

Nominal

Areaof

Conductor

Nominal

Thickness

of

O/Sheath

Aluminium

-A2XFY(P)

Copper-2XFY(P)

Approx.

overall

dia.of

cable

Approx.

weightof

cable

Approx.

A.C.

Resistance

at90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase


Approx.

overall

dia.of

cable

Approx.

weightof

cable

Approx.

A.C.

Resistance

at90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase


InDuctat

30C

In

Ground

at30C

InAirat

40C

InDu

ctat

30

C

InGround

at30C

InAirat

40C

mm

mm

mm

kg/km

ohm/km

ohm/km

MicroFarad/

km

Amps.

Amps.

Amps.

mm

kg/km

ohm/km

ohm/km

MicroFarad/

km

Am

ps.

Amps.

Amps.

TABLE1

4:

3.3

KV,

THREECORE

,XLPEINSULATED,

FLATSTRIPARMOUREDANDP

VCSHEATHED,

UNSCREENEDCABLES.

(A2XFY(P)/2XFY(P))

3535

1.5

6

31

1179

1.1

132

0.0

965

0.2

63

94

115

120

31

1811

0.6

684

0.0

965

0.2

63

120

145

155

5050

1.5

6

33

1349

0.8

222

0.0

926

0.2

96

110

135

145

33

2205

0.4

938

0.0

926

0.2

96

145

170

190

7070

1.5

6

36

1628

0.5

684

0.0

859

0.3

41

140

165

185

36

2864

0.3

423

0.0

859

0.3

41

175

210

235

9595

1.7

2

40

2008

0.4

108

0.0

829

0.3

89

165

195

225

40

3726

0.2

469

0.0

829

0.3

89

210

250

290

120

120

1.7

2

42

2306

0.3

251

0.0

808

0.4

27

185

220

255

42

4474

0.1

962

0.0

808

0.4

27

240

285

330

150

150

1.8

8

45

2664

0.2

650

0.0

792

0.4

66

210

245

295

45

5340

0.1

595

0.0

792

0.4

66

270

315

375

185

185

2.0

4

48

3119

0.2

114

0.0

768

0.5

12

235

280

340

48

6463

0.1

282

0.0

768

0.5

12

300

355

435

240

240

2.2

0

53

3827

0.1

618

0.0

750

0.5

74

270

320

400

53

8229

0.0

986

0.0

750

0.5

74

350

410

510

300

300

2.2

0

57

4475

0.1

302

0.0

736

0.6

35

305

360

460

57

10004

0.0

798

0.0

736

0.6

35

390

460

590

400

400

2.5

2

63

5445

0.1

023

0.0

719

0.7

04

350

410

535

63

12500

0.0

640

0.0

719

0.7

04

440

520

670

TABLE1

5:3.8

/6.6

KV,

THREECO

RE,

XLPEINSULATED,

FL

ATSTRIPARMOUREDAN

DPVCSHEATHED,

SCREE

NEDCABLES.

(A2XFY(P)/2XFY(P))

5050

1.7

2

42

2140

0.8

221

0.1

079

0.2

90

115

130

150

42

3020

0.4

938

0.1

075

0.2

92

150

170

195

7070

1.8

8

46

2570

0.5

684

0.0

994

0.3

32

140

160

190

46

3840

0.3

423

0.0

994

0.3

32

180

210

240

9595

1.8

8

50

3030

0.4

108

0.0

951

0.3

75

165

190

230

50

4790

0.2

470

0.0

951

0.3

75

215

250

295

120

120

2.0

4

53

3420

0.3

251

0.0

924

0.4

08

190

220

260

53

5770

0.1

962

0.0

918

0.4

15

240

280

335

150

150

2.2

0

56

3930

0.2

650

0.0

900

0.4

43

210

245

295

56

6710

0.1

596

0.0

897

0.4

47

270

310

380

185

185

2.2

0

60

4490

0.2

115

0.0

867

0.4

85

240

275

335

60

7930

0.1

283

0.0

864

0.4

90

305

350

430

240

240

2.3

6

65

5380

0.1

619

0.0

841

0.5

39

275

315

395

66

9860

0.0

988

0.0

839

0.5

44

350

400

500

300

300

2.5

2

70

6330

0.1

303

0.0

833

0.5

50

310

355

450

71

12120

0.0

800

0.0

827

0.5

63

390

445

570

400

400

2.8

4

80

7950

0.1

025

0.0

812

0.5

78

350

400

520

80

15200

0.0

643

0.0

812

0.5

80

440

500

650


16/32

14

HVCABLESTECHNICALCATALOGUENominal

Areaof

Conductor

Nominal

Thickness

of

O/Sheath

Aluminium

-A2XFY(P)

Copper-2XFY(P)

Approx.

overall

dia.of

cable

Approx.

weightof

cable

Approx.

A.C.

Resistance

at90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase


Approx.

overall

dia.of

cable

Approx.

weightof

cable

Approx.

A.C.

Resistance

at90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase


InDuctat

30C

In

Ground

at30C

InAirat

40C

InDu

ctat

30

C

InGround

at30C

InAirat

40C

mm

mm

mm

kg/km

ohm/km

ohm/km

MicroFarad/

km

Amps.

Amps.

Amps.

mm

kg/km

ohm/km

ohm/km

MicroFarad/

km

Am

ps.

Amps.

Amps.

TABLE1

6:

6.3

5/11kV,

THREEC

ORE,

XLPEINSULATED,F

LATSTRIPARMOUREDANDPVCSHEATHED,

SCRE

ENEDCABLES

(A2XFY(

P)/2XFY(P))

5050

1.8

8

46

2460

0.8

221

0.1

140

0.2

38

115

130

150

46

3340

0.4

938

0.1

136

0.2

40

150

170

195

7070

1.8

8

49

2890

0.5

684

0.1

050

0.2

72

140

160

190

49

4160

0.3

422

0.1

050

0.2

72

180

210

240

9595

2.0

4

53

3430

0.4

108

0.1

002

0.3

05

165

190

230

53

5200

0.2

469

0.1

002

0.3

05

215

250

295

120

120

2.2

0

56

3850

0.3

250

0.0

972

0.3

31

190

220

260

57

6100

0.1

961

0.0

966

0.3

37

240

280

335

150

150

2.2

0

60

4290

0.2

650

0.0

945

0.3

58

210

245

295

60

7050

0.1

595

0.0

942

0.3

61

270

310

380

185

185

2.3

6

64

5020

0.2

114

0.0

909

0.3

91

240

275

335

64

8460

0.1

282

0.0

906

0.3

95

305

350

430

240

240

2.5

2

69

5890

0.1

618

0.0

880

0.4

33

275

315

395

69

10290

0.0

986

0.0

878

0.4

37

350

400

500

300

300

2.6

8

73

6780

0.1

302

0.0

859

0.4

69

310

355

450

74

12500

0.0

798

0.0

854

0.4

80

390

445

570

400

400

2.8

4

81

8140

0.1

024

0.0

824

0.5

35

350

400

520

81

15390

0.0

642

0.0

824

0.5

37

440

500

650

TABLE1

7:1

1/11kV,

THREECORE,

XLPEINSULATED,

FLA

TSTRIPARMOUREDAND

PVCSHEATHED,

SCREEN

EDCABLES

(A2XFY(

P)/2XFY(P))

5050

2.2

0

55

3300

0.8

221

0.1

267

0.1

75

115

130

150

55

4190

0.4

937

0.1

262

0.1

77

150

170

195

7070

2.2

0

58

3810

0.5

683

0.1

166

0.1

98

140

160

190

58

5080

0.3

421

0.1

166

0.1

98

180

210

240

9595

2.3

6

62

4300

0.4

107

0.1

109

0.2

20

165

190

230

62

6070

0.2

467

0.1

109

0.2

20

215

250

295

120

120

2.3

6

65

4830

0.3

249

0.1

074

0.2

37

190

220

260

66

7130

0.1

960

0.1

066

0.2

41

240

280

335

150

150

2.5

2

69

5420

0.2

648

0.1

041

0.2

55

210

245

295

69

8180

0.1

592

0.1

038

0.2

57

270

310

380

185

185

2.6

8

73

6030

0.2

112

0.0

999

0.2

77

240

275

335

73

9600

0.1

279

0.0

995

0.2

80

305

350

430

240

240

2.8

4

78

7070

0.1

616

0.0

963

0.3

05

275

315

395

78

11500

0.0

982

0.0

960

0.3

07

350

400

500

300

300

3.0

0

82

7970

0.1

299

0.0

938

0.3

28

310

355

450

84

13840

0.0

794

0.0

931

0.3

36

390

445

570

400

400

3.0

0

90

9480

0.1

020

0.0

895

0.3

72

350

400

520

90

16730

0.0

636

0.0

894

0.3

73

440

500

650


17/32

15

Nominal

Areaof

Conductor

Nominal

Thickness

of

O/Sheath

Aluminium

-A2XFY(P)

Copper-2XFY(P)

Approx.

overall

dia.of

cable

Approx.

weightof

cable

Approx.

A.C.

Resistance

at90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase


Approx.

overall

dia.of

cable

Approx.

weightof

cable

Approx.

A.C.

Resistance

at90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase


InDuctat

30C

In

Ground

at30C

InAirat

40C

InDu

ctat

30

C

InGround

at30C

InAirat

40C

mm

mm

mm

kg/km

ohm/km

ohm/km

MicroFarad/

km

Amps.

Amps.

Amps.

mm

kg/km

ohm/km

ohm/km

MicroFarad/

km

Am

ps.

Amps.

Amps.

TABLE1

8:1

2.7

/22kV,

THREECORE,

XLPEINSULATED,FL

ATSTRIPARMOUREDAN

DPVCSHEATHED,

SCREE

NEDCABLES.

(A2XFY(

P)/2XFY(P))

5050

2.2

0

57

3510

0.8

221

0.1

296

0.1

65

115

130

155

57

4400

0.4

937

0.1

291

0.1

66

150

170

200

7070

2.3

6

61

4060

0.5

683

0.1

193

0.1

86

140

160

190

61

5320

0.3

421

0.1

193

0.1

86

180

205

245

9595

2.3

6

65

4640

0.4

107

0.1

135

0.2

06

170

190

230

65

6410

0.2

467

0.1

135

0.2

06

215

245

300

120

120

2.5

2

68

5110

0.3

249

0.1

098

0.2

22

190

215

265

69

7480

0.1

959

0.1

090

0.2

26

245

275

340

150

150

2.6

8

71

5700

0.2

648

0.1

064

0.2

39

215

240

300

72

8460

0.1

592

0.1

061

0.2

40

275

305

385

185

185

2.6

8

75

6340

0.2

112

0.1

021

0.2

59

240

270

340

75

9850

0.1

278

0.1

017

0.2

61

305

345

435

240

240

2.8

4

80

7300

0.1

615

0.0

984

0.2

84

275

310

400

80

11770

0.0

982

0.0

980

0.2

87

350

395

510

300

300

3.0

0

85

8320

0.1

298

0.0

957

0.3

06

310

350

455

86

14120

0.0

793

0.0

950

0.3

13

390

440

580

400

400

3.0

0

92

9870

0.1

020

0.0

912

0.3

46

355

395

530

92

17120

0.0

635

0.0

911

0.3

47

440

495

660

TABLE1

9:1

9/33kV,

THREECORE,

XLPEINSULATED,

FLA

TSTRIPARMOUREDAND

PVCSHEATHED,

SCREEN

EDCABLES.

(A2XFY(

P)/2XFY(P))

9595

2.8

4

78

6360

0.4

106

0.1

262

0.1

58

170

190

230

78

8120

0.2

466

0.1

262

0.1

58

215

245

300

120

120

2.8

4

81

6820

0.3

248

0.1

219

0.1

69

190

215

265

81

9110

0.1

958

0.1

210

0.1

71

245

275

340

150

150

3.0

0

84

7530

0.2

647

0.1

180

0.1

81

215

240

300

85

10290

0.1

590

0.1

176

0.1

82

275

305

385

185

185

3.0

0

88

8280

0.2

110

0.1

130

0.1

95

240

270

340

88

11730

0.1

276

0.1

126

0.1

96

305

345

435

240

240

3.0

0

93

9260

0.1

613

0.1

086

0.2

12

275

310

400

93

13700

0.0

978

0.1

083

0.2

14

350

395

510

300

300

3.0

0

97

10250

0.1

296

0.1

055

0.2

27

310

350

455

98

16020

0.0

789

0.1

046

0.2

32

390

440

580

400

400

3.0

0

104

11790

0.1

016

0.1

002

0.2

55

355

395

530

104

19040

0.0

629

0.1

001

0.2

56

440

495

660


18/32

16


Areaof

Conductor

N

ominal

Dia.

Of

A

rmour

Wire

Minimum

Thickness

ofO/

Sheath

Aluminium

-A2XWY(P)

Copper-2XWY(P)

Approx.

overall

dia.of

cable

Approx.

weight

ofcable

Ap

prox.

A.C.

Resistance

at

90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase

Continu

ousCurrentRating

Approx.

overall

dia.of

cable

Approx.

weight

ofcable

Approx.

A.C.

Res

istance

at

90C

Approx.

Reactance

at50Hz

Approx.

Capacitace

perphase


InDuct

at

30C

In

Ground

at30C

InAirat

40C

InDuctat

30C

InGroundat

30C

InAirat

40C

mm

mm

mm

mm

kg/km

oh

m/km

ohm/km

MicroFarad/

km

Amps.

Amps.

Amps.

mm

kg/km

oh

m/km

ohm/km

Micro

Farad/km

Amps.

Amps.

Amps.

TABLE2

0:

3.3

kV,

THREECORE,

XLPEINSULATED,

ROUND

WIREARMOUREDANDP

VCSHEATHED,

UNSCREE

NEDCABLES.

(A2XWY(P)/2XWY(P))

3535

1.6

1.5

6

32

1540

1.1132

0.0

965

0.2

63

94

115

120

32

2170

0.6684

0.0

881

0.2

63

120

145

155

5050

2

1.5

6

35

1980

0.8222

0.0

926

0.2

96

110

135

145

35

2840

0.4939

0.0

837

0.2

96

145

170

190

7070

2

1.5

6

38

2320

0.5684

0.0

859

0.3

41

140

165

185

38

3560

0.3424

0.0

764

0.3

41

175

210

235

9595

2

1.7

2

42

2760

0.4109

0.0

829

0.3

89

165

195

225

42

4480

0.2471

0.0

728

0.3

89

210

250

290

120

120

2

1.8

8

44

3150

0.3252

0.0

808

0.4

27

185

220

255

44

5320

0.1966

0.0

682

0.4

27

240

285

330

150

150

2.5

2.0

4

48

3920

0.2651

0.0

792

0.4

66

210

245

295

48

6600

0.1600

0.0

662

0.4

66

270

315

375

185

185

2.5

2.0

4

51

4450

0.2116

0.0

768

0.5

12

235

280

340

51

7800

0.1289

0.0

634

0.5

12

300

355

435

240

240

2.5

2.2

0

56

5300

0.1620

0.0

750

0.5

74

270

320

400

56

9700

0.0996

0.0

612

0.5

74

350

410

510

300

300

2.5

2.3

6

61

6130

0.1305

0.0

736

0.6

35

305

360

460

61

11660

0.0811

0.0

595

0.6

35

390

460

590

400

400

3.1

5

2.6

8

68

8000

0.1028

0.0

719

0.7

04

350

410

535

68

15060

0.0657

0.0

574

0.7

04

440

520

670

TABLE2

1:

3.8

/6.6

kV,

THREECO

RE,

XLPEINSULATED,

RO

UNDWIREARMOUREDANDPVCSHEATHED,

SCREENEDCABLES.

(A2XWY(P)/2XWY(P))

5050

2

1.8

8

44

2960

0.8221

0.1

079

0.2

90

115

130

150

44

3840

0.4938

0.1

075

0.2

92

150

170

195

7070

2

1.8

8

48

3420

0.5684

0.0

994

0.3

32

140

160

190

48

4690

0.3423

0.0

994

0.3

32

180

210

240

9595

2.5

2.0

4

53

4410

0.4108

0.0

951

0.3

75

165

190

230

53

6170

0.2470

0.0

951

0.3

75

215

250

295

120

120

2.5

2.2

0

56

4920

0.3251

0.0

924

0.4

08

190

220

260

57

7240

0.1962

0.0

918

0.4

15

240

280

335

150

150

2.5

2.2

0

59

5470

0.2650

0.0

900

0.4

43

210

245

295

59

8220

0.1596

0.0

897

0.4

47

270

310

380

185

185

2.5

2.3

6

63

6170

0.2115

0.0

867

0.4

85

240

275

335

63

9650

0.1283

0.0

864

0.4

90

305

350

430

240

240

3.1

5

2.5

2

70

7920

0.1619

0.0

841

0.5

39

275

315

395

70

12430

0.0988

0.0

839

0.5

44

350

400

500

300

300

3.1

5

2.6

8

75

9100

0.1303

0.0

833

0.5

50

310

355

450

76

14930

0.0800

0.0

827

0.5

63

390

445

570

400

400

4

3.0

0

86

12290

0.1025

0.0

812

0.5

78

350

400

520

86

19540

0.0643

0.0

812

0.5

80

440

500

650


19/32

17

Nominal

Areaof

Conductor

N

ominal

Dia.

Of

A

rmour

Wire

Minimum

Thickness

ofO/

Sheath

Aluminium

-A2XWY(P)

Copper-2XWY(P)

Approx.

overall

dia.of

cable

Approx.

weight

ofcable

Ap

prox.

A.C.

Resistance

at

90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase

Continu

ousCurrentRating

Approx.

overall

dia.of

cable

Approx.

weight

ofcable

Approx.

A.C.

Res

istance

at

90C

Approx.

Reactance

at50Hz

Approx.

Capacitace

perphase


InDuct

at

30C

In

Ground

at30C

InAirat

40C

InDuctat

30C

InGroundat

30C

InAirat

40C

mm

mm

mm

mm

kg/km

oh

m/km

ohm/km

MicroFarad/

km

Amps.

Amps.

Amps.

mm

kg/km

oh

m/km

ohm/km

Micro

Farad/km

Amps.

Amps.

Amps.

TABLE2

2:

6.3

5/11kV,

THREECORE,

XLPEINSULATED,R

OUNDWIREARMOUREDA

NDPVCSHEATHED,

SCREENEDCABLES.

(A2XWY(P)/2XWY(P))

5050

2.5

2.0

4

49

3720

0.8221

0.1

140

0.2

38

115

130

150

49

4610

0.4938

0.1

136

0.2

40

150

170

195

7070

2.5

2.0

4

53

4270

0.5684

0.1

050

0.2

72

140

160

190

53

5540

0.3422

0.1

050

0.2

72

180

210

240

9595

2.5

2.2

0

57

4910

0.4108

0.1

002

0.3

05

165

190

230

57

6680

0.2469

0.1

002

0.3

05

215

250

295

120

120

2.5

2.2

0

59

5400

0.3250

0.0

972

0.3

31

190

220

260

60

7650

0.1961

0.0

966

0.3

37

240

280

335

150

150

2.5

2.3

6

63

5970

0.2650

0.0

945

0.3

58

210

245

295

63

8730

0.1595

0.0

942

0.3

61

270

310

380

185

185

3.1

5

2.5

2

69

7490

0.2114

0.0

909

0.3

91

240

275

335

69

11000

0.1282

0.0

906

0.3

95

305

350

430

240

240

3.1

5

2.6

8

74

8620

0.1618

0.0

880

0.4

33

275

315

395

74

13020

0.0986

0.0

878

0.4

37

350

400

500

300

300

3.1

5

2.8

4

78

9650

0.1302

0.0

859

0.4

69

310

355

450

79

15430

0.0798

0.0

854

0.4

80

390

445

570

400

400

4

3.0

0

88

12570

0.1024

0.0

824

0.5

35

350

400

520

88

19820

0.0642

0.0

824

0.5

37

440

500

650

TABLE2

3:

11/11kV,

THREECOR

E,

XLPEINSULATED,

ROU

NDWIREARMOUREDAN

DPVCSHEATHED,

SCREE

NEDCABLES.

(A2XWY(P)/2XWY(P))

5050

2.5

2.2

0

58

4780

0.8221

0.1

267

0.1

75

115

130

150

58

5700

0.4937

0.1

262

0.1

77

150

170

195

7070

2.5

2.3

6

62

5470

0.5683

0.1

166

0.1

98

140

160

190

62

6740

0.3421

0.1

166

0.1

98

180

210

240

9595

3.1

5

2.5

2

67

6750

0.4107

0.1

109

0.2

20

165

190

230

67

8520

0.2467

0.1

109

0.2

20

215

250

295

120

120

3.1

5

2.5

2

70

7410

0.3249

0.1

074

0.2

37

190

220

260

71

9710

0.1960

0.1

066

0.2

41

240

280

335

150

150

3.1

5

2.6

8

73

8080

0.2648

0.1

041

0.2

55

210

245

295

74

10910

0.1592

0.1

038

0.2

57

270

310

380

185

185

3.1

5

2.8

4

77

8910

0.2112

0.0

999

0.2

77

240

275

335

78

12470

0.1279

0.0

995

0.2

80

305

350

430

240

240

3.1

5

3.0

0

83

10210

0.1616

0.0

963

0.3

05

275

315

395

83

14680

0.0982

0.0

960

0.3

07

350

400

500

300

300

4

3.0

0

88

12280

0.1299

0.0

938

0.3

28

310

355

450

90

18240

0.0794

0.0

931

0.3

36

390

445

570

400

400

4

3.0

0

96

14300

0.1020

0.0

895

0.3

72

350

400

520

96

21550

0.0636

0.0

894

0.3

73

440

500

650


20/32

18


Areaof

Conductor

N

ominal

Dia.

Of

A

rmour

Wire

Minimum

Thickness

ofO/

Sheath

Aluminium

-A2XWY(P)

Copper-2XWY(P)

Approx.

overall

dia.of

cable

Approx.

weight

ofcable

Ap

prox.

A.C.

Resistance

at

90C

Approx.

Reactance

at50Hz

Approx.

Capacitance

perphase

Continu

ousCurrentRating

Approx.

overall

dia.of

cable

Approx.

weight

ofcable

Approx.

A.C.

Res

istance

at

90C

Approx.

Reactance

at50Hz

Approx.

Capacitace

perphase


InDuct

at

30C

In

Ground

at30C

InAirat

40C

InDuctat

30C

InGroundat

30C

InAirat

40C

mm

mm

mm

mm

kg/km

oh

m/km

ohm/km

MicroFarad/

km

Amps.

Amps.

Amps.

mm

kg/km

oh

m/km

ohm/km

Micro

Farad/km

Amps.

Amps.

Amps.

TABLE2

4:

12.7

/22kV,

THREEC

ORE,

XLPEINSULATED,R

OUNDWIREARMOUREDA

NDPVCSHEATHED,

SCREENEDCABLES.

(A2XWY(P)/2XWY(P))

5050

2.5

2.3

6

60

5110

0.8221

0.1

296

0.1

65

115

130

155

60

6000

0.4937

0.1

291

0.1

66

150

170

200

7070

2.5

2.3

6

64

5730

0.5683

0.1

193

0.1

86

140

160

190

64

7000

0.3421

0.1

193

0.1

86

180

205

245

9595

3.1

5

2.5

2

69

7180

0.4107

0.1

135

0.2

06

170

190

230

69

8940

0.2467

0.1

135

0.2

06

215

245

300

120

120

3.1

5

2.6

8

73

7790

0.3249

0.1

098

0.2

22

190

215

265

73

10150

0.1959

0.1

090

0.2

26

245

275

340

150

150

3.1

5

2.6

8

76

8420

0.2648

0.1

064

0.2

39

215

240

300

76

11250

0.1592

0.1

061

0.2

40

275

305

385

185

185

3.1

5

2.8

4

80

9310

0.2112

0.1

021

0.2

59

240

270

340

80

12820

0.1278

0.1

017

0.2

61

305

345

435

240

240

4

3.0

0

87

11650

0.1615

0.0

984

0.2

84

275

310

400

87

16120

0.0982

0.0

980

0.2

87

350

395

510

300

300

4

3.0

0

91

12800

0.1298

0.0

957

0.3

06

310

350

455

92

18700

0.0793

0.0

950

0.3

13

390

440

580

400

400

4

3.0

0

98

14750

0.1020

0.0

912

0.3

46

355

395

530

98

22000

0.0635

0.0

911

0.3

47

440

495

660

TABLE2

5:

19/33kV,

THREECO

RE,

XLPEINSULATED,

ROUNDWIREARMOUREDAN

DPVCSHEATHED,

SCREENEDCABLES.

(A2XWY(P)/2XWY(P))

9595

3.1

5

3.0

0

83

9500

0.4106

0.1

262

0.1

58

170

190

230

83

11260

0.2466

0.1

262

0.1

58

215

245

300

120

120

4

3.0

0

87

11280

0.3248

0.1

219

0.1

69

190

215

265

88

13540

0.1958

0.1

210

0.1

71

245

275

340

150

150

4

3.0

0

90

12000

0.2647

0.1

180

0.1

81

215

240

300

91

14760

0.1590

0.1

176

0.1

82

275

305

385

185

185

4

3.0

0

94

13010

0.2110

0.1

130

0.1

95

240

270

340

94

16470

0.1276

0.1

126

0.1

96

305

345

435

240

240

4

3.0

0

99

14250

0.1613

0.1

086

0.2

12

275

310

400

99

18660

0.0978

0.1

083

0.2

14

350

395

510

300

300

4

3.0

0

103

15480

0.1296

0.1

055

0.2

27

310

350

455

104

21330

0.0789

0.1

046

0.2

32

390

440

580

400

400

4

3.0

0

110

17420

0.1016

0.1

002

0.2

55

355

395

530

110

24680

0.0629

0.1

001

0.2

56

440

495

660


21/32

19

1) Continuous current carrying capacity is an important

factor for the selection of the optimum size of conductor

in a cable. The current ratings given in Tables 2 to 25 are

on the following standard installation conditions:

1. Maximum Conductor Temprature 90C

2. Thermal Resistivity of Soil 1.5 K.m/W

3. Ground Temprature 30C

4. Ambient Air Temprature 40C

5. Depth of Laying - to the highest point of cableslaid direct or to top surface of ducts, is taken to beas follows:

a) 3.3, 6.6 and 11 kV cables 900 mm

b) 22 and 33 kV cables 1050 mm

6. Method of Installation :

a) Single core cables: Three core cablesin trefoil touching

b) Three core cables Installed single

2) Short Circuir Rating

The conductor size in a cable for an installation is also

governed by its ability to carry short circuit current of

the system.

Short circuit rating are based on the assumption that the

duration of short circuit is so small and apparently there

is no transmission of heat, produced during short circuit,

through the insulation and the whole of it is absorbed bythe conductor.

The short circuit current ratings (r.m.s. values) of XLPE

insulated cables with aluminium / copper conductors for

one second duration are given in table 1. These ratings

have been calculated on the following assumptions.

Parametres Aluminium Copper

1. Conductor temprature

prior to short circuit

90C 90C

2. Maximum permissibleconductor tempratureduring short circuit

250C 250C

3. Specific gravity ofaluminium

2.703 8.89

4. Resistivity of aluminiumat 20 C (ohm/km/mm)

28.264 17.24

5. Temprature coefficientof resistance at 20

0.00403/C 0.0039/C

With the above assumptions, the maximum short circuitcurrent is calculated with the following formula.

Ishk x A

t(kA)

Where Ish = r.m.s. value of short circuit current (kA)

k = a constant (Aluminium-0.094, Copper-0.143)

A = nominal area of conductor ( mm )

t = duration of short circuit (sec)

3) Combinations of duct and cable dimensions

assumed are shown below.Duct Dimesions corresponding to cable diametre

Overall Cable Diameter Inside DuctDiameter

OutsideDuct

Diameter

mm mm mm

Up to and including 65 100 130

Above 65 and including 90 125 160

Above 90 and including 115 150 190

4) Rating FactorsIn actual practice, conditions of installation may be

different from the standard installation conditions given

above. Hence to determine the continuous current rating

for the actual conditions, the tabulated current ratings

should be multiplied by the appropriate ratings factors or

factors given in Tables 26 to 40-c.

a) Cable Laid Direct in the Ground ReferTable No.

i) For Depth of laying 26

ii) For variation in groundtemprature

27

iii) For variation in thermal resistivityof soil

28 and 29

iv) For group rating factors 30 and 31

b) Cables Installed in Ducts ReferTable No.

i) For depth of laying 32

ii) For variation in groundtemprature

33

iii) For variation in thermal resistivityof Soil 34 and 35

iv) For group rating factors 36 and 37

c) Cables Installed in AirRefer

Table No.

i) For variation in ambient airtemprature

38

d) Group RatingRefer

Table No.

i) Group Rating factors for cables

laid in Trays/ Racks(1core & 3 core)

39-A to

40-c


22/32

20

HVCABLESTECHNICALCATALOGUETABLE

26

Ratingfactorsfordepthoflayingofcableslaiddirectin

theground

DepthofLaying(mm)

3.3,6.6

And11kVCables

22And33kVCables

900

1.0

0

-

1050

0.9

9

1.0

0

1200

0.9

7

0.9

9

1500

0.9

5

0.9

7

1800

0.9

4

0.9

5

2000

0.9

3

0.9

4

2500

0.9

1

0.9

2

3000orMore

0.9

0.9

1

TABLE

27

Ratingfactorsforvariationingroundtemperatureforcableslaiddirectintheground

GroundTemperatureDeg.C

15

20

25

30

35

40

45

50

RatingFactor

(maximumc

onductortemperature90Deg.C

)

1.1

2

1.0

8

1.0

4

1.0

0

0.9

6

0.9

1

0.8

7

0.8

2

TABLE

28

Ratingfactorsforvariationinthermalresistivityofsoilforthreesinglecorecableslaid

directinthe

ground

Nomina

lAreaof

Conductormm2

ValueofThermalResistivityofSo

ilK.m

/W

1.0

1.2

0

1.5

0

2.0

0

2.5

0

3.0

252

5

1.1

7

1.0

9

1.0

0

0.8

8

0.8

0.7

4

353

5

1.1

8

1.1

1.0

0

0.8

8

0.8

0.7

4

505

0

1.1

9

1.1

1.0

0

0.8

8

0.8

0.7

3

707

0

1.1

9

1.1

1.0

0

0.8

8

0.8

0.7

3

959

5

1.1

9

1.1

1.0

0

0.8

8

0.7

9

0.7

3

120

1

20

1.1

9

1.1

1.0

0

0.8

8

0.7

9

0.7

3

150

1

50

1.1

9

1.1

1.0

0

0.8

8

0.7

9

0.7

3

185

1

85

1.1

9

1.1

1.0

0

0.8

8

0.7

9

0.7

2

240

2

40

1.2

1.1

1

1.0

0

0.8

8

0.7

9

0.7

2

300

3

00

1.2

1.1

1

1.0

0

0.8

7

0.7

9

0.7

2

400

4

00

1.2

1.1

1

1.0

0

0.8

7

0.7

9

0.7

2

500

5

00

1.2

1.1

1

1.0

0

0.8

7

0.7

9

0.7

2

630

6

30

1.2

1

1.1

1

1.0

0

0.8

7

0.7

8

0.7

2

800

8

00

1.2

1

1.1

1

1.0

0

0.8

7

0.7

8

0.7

2

1000

10

00

1.2

1

1.1

1

1.0

0

0.8

7

0.7

8

0.7

2


23/32

21

TABLE

29

Ratingfactorsforvariationinthermalresistivityofsoil

forthreecorecableslaiddirectinthegroun

d

NominalAre

aofConductormm2

ValueofThermalResistivity

ofSoilK.m

/W

1.0

1.2

0

1.5

0

2.0

0

2.5

0

3.0

2525

1.1

6

1.0

8

1.0

0

0.9

0.8

2

0.75

3535

1.1

6

1.0

8

1.0

0

0.9

0.8

1

0.75

5050

1.1

6

1.0

8

1.0

0

0.8

9

0.8

1

0.75

7070

1.1

6

1.0

9

1.0

0

0.8

9

0.8

1

0.75

9595

1.1

6

1.0

9

1.0

0

0.8

9

0.8

1

0.75

120

120

1.1

6

1.0

9

1.0

0

0.8

9

0.8

1

0.75

150

150

1.1

6

1.0

9

1.0

0

0.8

9

0.8

1

0.75

185

185

1.1

6

1.0

9

1.0

0

0.8

9

0.8

1

0.75

240

240

1.1

7

1.0

9

1.0

0

0.8

9

0.8

1

0.75

300

300

1.1

7

1.0

9

1.0

0

0.8

9

0.8

1

0.75

400

400

1.1

7

1.0

9

1.0

0

0.8

9

0.8

1

0.75

500

500

1.1

7

1.0

9

1.0

0

0.8

9

0.8

1

0.74

TABLE

30

Groupratingfactorsforcircuitsofthreesingle-corecablesintrefoillaiddirectintheground

NumberofCablesInGroup

SpacingBetweenTrefoilGroupCentres,mm

TOUCHING

200

400

600

800

22

0.7

6

0.8

3

0.8

7

0.9

0.92

33

0.6

4

0.7

2

0.7

9

0.8

3

0.86

44

0.5

8

0.6

7

0.7

5

0.8

0.84

55

0.5

3

0.6

3

0.7

1

0.7

7

0.81

66

0.5

0.6

0.6

9

0.7

6

0.8

77

0.4

7

0.5

8

0.6

7

0.7

4

0.79

88

0.4

5

0.5

6

0.6

6

0.7

3

-

99

0.4

3

0.5

5

0.6

5

0.7

3

-

1010

0.4

2

0.5

4

0.6

4

-

-

1111

0.4

1

0.5

3

0.6

4

-

-

1212

0.4

0

0.5

2

0.6

3

-

-


24/32

22


31

Groupratingfactorsforthreecorecablesinhorizontalf

ormationlaiddirectintheground.

NumberofC

ablesInGroup

SpacingBetweenTrefoilGroupCe

ntres,mm

TOUCHING

200

400

600

800

22

0.7

9

0.8

6

0.9

0

0.9

2

0.9

4

33

0.6

7

0.7

7

0.8

2

0.8

6

0.8

9

44

0.6

1

0.7

2

0.7

9

0.8

3

0.8

7

55

0.5

6

0.6

8

0.7

6

0.8

1

0.8

5

66

0.5

3

0.6

5

0.7

4

0.8

0.8

4

77

0.5

0.6

3

0.7

2

0.7

8

0.8

3

88

0.4

8

0.6

1

0.7

1

0.7

8

-

99

0.4

6

0.6

0.7

0

0.7

7

-

101

0

0.4

4

0.5

9

0.6

9

-

-

111

1

0.4

3

0.5

8

0.6

9

-

-

121

2

0.4

2

0.5

7

0.6

8

-

-

TABLE

32

Ratingfactorsfordepthoflayingsingleorthreecoreca

blesinsinglewayducts.

DepthofLaying(mm)

3.3,6.6

And11kVCables

22And33kVCables

900

1.0

0

-

1050

0.9

9

1.0

0

1200

0.9

8

0.9

9

1500

0.9

6

0.9

8

1800

0.9

5

0.9

6

2000

0.9

4

0.9

5

2500

0.9

3

0.9

4

3000orMore

0.9

2

0.9

3

TABLE

33

Ratingfactorsforvariationingroundtemperatureforcablesinducts

GroundTem

perature

Deg

.C

15

20

25

30

35

40

45

50

55

60

Rating

Factor

(maximum

conductor

temperature90

Deg.C

)

1.1

2

1.0

8

1.0

4

1.0

0

0.9

6

0.9

1

0.8

7

0.8

2

0.7

6

0.7

1


25/32

23

TABLE

34

Ratingfactorsforvariationinthermalresistivityofsoilforthreesinglecorecablesinducts

Nominala

reaofconductormm2

ValueofThermalResistivityofSoilK.m

/W

1.0

1.2

0

1.5

0

2.0

0

2.5

0

3.0

2525

1.1

1

1.0

5

1.0

0

0.9

2

0.8

5

0.8

3535

1.1

1

1.0

6

1.0

0

0.9

2

0.8

5

0.8

5050

1.1

2

1.0

6

1.0

0

0.9

2

0.8

5

0.7

9

7070

1.1

2

1.0

6

1.0

0

0.9

2

0.8

5

0.7

9

9595

1.1

2

1.0

7

1.0

0

0.9

1

0.8

4

0.7

9

120

120

1.1

2

1.0

7

1.0

0

0.9

1

0.8

4

0.7

9

150

150

1.1

2

1.0

7

1.0

0

0.9

1

0.8

4

0.7

8

185

185

1.1

3

1.0

7

1.0

0

0.9

1

0.8

4

0.7

8

240

240

1.1

3

1.0

7

1.0

0

0.9

0.8

3

0.7

8

300

300

1.1

3

1.0

7

1.0

0

0.9

0.8

3

0.7

7

400

400

1.1

4

1.0

8

1.0

0

0.9

0.8

3

0.7

7

500

500

1.1

4

1.0

8

1.0

0

0.9

0.8

3

0.7

7

630

630

1.1

4

1.0

8

1.0

0

0.9

0.8

2

0.7

6

800

800

1.1

5

1.0

8

1.0

0

0.9

0.8

2

0.7

6

1000

1000

1.1

5

1.0

8

1.0

0

0.9

0.8

2

0.7

6

TABLE

35

Ratingfactorsforvariationinthermalresistivityofsoilforthreecorecablesinsinglewayducts

Nominalareaofconductormm2

ValueofThermalResistivityofSoilK.m

/W

1.0

1.2

0

1.5

0

2.0

0

2.5

0

3.0

2525

1.0

7

1.0

4

1.0

0

0.9

3

0.8

9

0.8

4

3535

1.0

7

1.0

4

1.0

0

0.9

3

0.8

8

0.8

3

5050

1.0

7

1.0

4

1.0

0

0.9

3

0.8

8

0.8

3

7070

1.0

8

1.0

4

1.0

0

0.9

3

0.8

8

0.8

3

9595

1.0

8

1.0

5

1.0

0

0.9

3

0.8

7

0.8

3

120

120

1.0

9

1.0

5

1.0

0

0.9

3

0.8

7

0.8

3

150

150

1.0

9

1.0

5

1.0

0

0.9

3

0.8

7

0.8

3

185

185

1.0

9

1.0

5

1.0

0

0.9

3

0.8

7

0.8

2

240

240

1.0

9

1.0

5

1.0

0

0.9

3

0.8

7

0.8

2

300

300

1.0

9

1.0

5

1.0

0

0.9

2

0.8

7

0.8

2

400

400

1.1

1.0

6

1.0

0

0.9

2

0.8

7

0.8

2

500

500

1.1

1.0

6

1.0

0

0.9

2

0.8

6

0.8

1


26/32

24


36

Grouprating

factorsforcircuitsofsingle-corecablesinsingle-wayductsintrefoil

No.ofcablesinGroup

SpacingBetweenTrefoilGroupCentres,mm

TOUCHING

200

400

600

800

22

0.8

1

0.8

5

0.8

9

0.9

1

0.93

33

0.6

9

0.7

5

0.8

1

0.8

4

0.87

44

0.6

4

0.6

9

0.7

7

0.8

2

0.85

55

0.5

9

0.6

5

0.7

4

0.7

9

0.83

66

0.5

6

0.6

3

0.7

2

0.7

8

0.82

77

0.5

3

0.6

0.7

0

0.7

7

0.81

88

0.5

1

0.5

9

0.6

9

0.7

6

-

99

0.4

9

0.5

7

0.6

8

0.7

5

-

1010

0.4

8

0.5

6

0.6

7

-

-

1111

0.4

7

0.5

5

0.6

6

-

-

1212

0.4

6

0.5

4

0.6

6

-

-

TABLE

37

Grouprating

factorsforcircuitsofthree-corecablesinsingle

-wayductsinhorizontalformation.

NumberofCablesInGroup

SpacingBetweenT

refoilGroupCentres,mm

TOUCHING

200

400

600

800

22

0.8

5

0.8

9

0.9

2

0.9

4

0.9

5

33

0.7

5

0.8

1

0.8

6

0.8

9

0.9

1

44

0.7

0.7

6

0.8

3

0.8

7

0.8

9

55

0.6

5

0.7

3

0.8

0

0.8

5

0.8

8

66

0.6

2

0.7

0.7

8

0.8

4

0.8

7

77

0.5

9

0.6

8

0.7

7

0.8

2

0.8

6

88

0.5

7

0.6

7

0.7

6

0.8

2

-

99

0.5

5

0.6

5

0.7

5

0.8

1

-

1010

0.5

4

0.6

4

0.7

4

-

-

1111

0.5

2

0.6

3

0.7

4

-

-

1212

0.5

1

0.6

2

0.7

3

-

-


27/32

25

TABLE

38

Ratingfactor

sforvariationinambientairtemperature.

AirTemperatureDeg.C

25

30

35

40

45

50

55

60

65

70

RatingFactor

(Maximum

ConductorTemperature90

Deg.C

)

1.1

6

1

.11

1.0

6

1.0

0

0.9

4

0.8

8

0.8

1

0.7

4

0.7

1

0.6

3

TABLE

39-A

Grouprating

factorsforsinglecorecableslaidonracks/traysincoveredtrenchwithremovablecoverswhereaircirculationisrestricted,trefoilsareseperatedbytwocable

diahorizonta

llyandthetraysareintierswith30cm.

Gapbetweenthem.

NumberofCablesTrays

InTier

No.ofCables

1

2

3

-

-

11

0.9

5

0.9

0.8

8

-

-

22

0.9

0.8

5

0.8

3

-

-

33

0.8

8

0.8

3

0.8

1

-

-

66

0.8

6

0.8

1

0.7

9

-

-

TABLE

39-B

Grouprating

factorsforsinglecorecableslaidonracks/traysinopenairtrenchwithoutcoverswhereaircircula

tionisnotrestricted,trefoilsareseperatedbytw

ocable

diahorizonta

llyandthetraysareintierswith30cm.

Gapbetweenthem.

NumberofCablesTrays

InTier

No.ofCables

1

2

3

-

-

11

1

0.9

8

0.9

6

-

-

22

1

0.9

5

0.9

3

-

-

33

1

0.9

4

0.9

2

-

-

66

1

0.9

3

0.9

0

-

-


28/32

26


40-A

Groupratingf

actorsforthree-corecableslaidinsideconcrete

trenchwithremovablecovers,oncabletrayswhereaircirculationisrestricted.

Thecablespacedb

yone

cablediamete

randtraysintiersby300mm.

Theclearancebetweenthewallandthecable25mm

NumberofCa

blesTraysInTier

No.ofCables

1

2

3

6

9

11

0.9

5

0.9

0.8

8

0.8

5

0.8

4

22

0.9

0.8

5

0.8

3

0.8

1

0.8

33

0.8

8

0.8

3

0.8

1

0.7

9

0.7

8

66

0.8

6

0.8

1

0.7

9

0.7

7

0.7

6

TABLE

40-B

Groupratingf

actorsforthree-corecableslaidoncabletrayse

xposedtoair,thecablespacedbyonecablediam

eterandtraysintiersby300mm.

Theclearance

betweenthew

allandthecable25mm

NumberofCa

blesTraysInTier

No.ofCables

1

2

3

6

9

11

1

0.9

8

0.9

6

0.9

3

0.9

2

22

1

0.9

5

0.9

3

0.9

0.8

9

33

1

0.9

4

0.9

2

0.8

9

0.8

8

66

1

0.9

3

0.9

0

0.8

7

0.8

6

TABLE

40-C

Groupratingf

actorsforthree-corecableslaidoncabletrayse

xposedtoair,thecablestouchingandtraysintie

rsby300mm.

Theclearancebetweenthewalla

ndthe

cable25mm

NumberofCa

blesTraysInTier

No.ofCables

1

2

3

6

9

11

1

0.8

4

0.8

0

0.7

5

0.7

3

22

1

0.8

0.7

6

0.7

1

0.6

9

33

1

0.7

8

0.7

4

0.7

0.6

8

66

1

0.7

6

0.7

2

0.6

8

0.6

6


29/32

PROCESS FLOW

CHARTMATERIAL USED MANUFACTURING OPERATIONS

NOTE: For 3 Core 3.3 kV grade unscreened cables, activities 2,4,5 will not be applicable

1

2

3

4

5

6

7

8

9

27

CONDUCTOR STRANDINGWIRE DRAWINGALUMINIUM

SEMICONDUCTING CROSS - LINKED POLYETHYLENE CONDUCTOR SHIELDING (EXTRUSION AND VULCANIZING)

CROSS LINKED POLYETHYLENE CROSS LINKED POLYETHYLENE INSULATION (EXTRUSION AND VULCANIZING)

SEMICONDUCTING CROSS - LINKED POLYETHYLENE INSULATION SHIELDING (EXTRUSION AND VULCANIZING)

ANNEALED COPPER TAPE METALLIC SHIELDING

PLASTIC FILLERS LAYING-UP OF CORES WITH PLASTIC FILLERS

THERMOPLASTIC TAPES OR EXTRUDED

PVC/POLYTHYLENEINNER SHEATHING

GALVANISED FLAT STEEL STRIPS OR

GALVANISED ROUND STEEL WIRESARMOURING

OUTER SHEATHING

(EXTRUSION)PVC / POLYETHYLENE PACKINGTESTING


30/32

HV

CABLE

STECHNICALCATALO

GUE

28

DRUM

HANDLING

1. Always stand upright

Otherwise the cable might be damaged or the cable

layers tangled making it impossible to pull out and use

the cable.

In order to prevent damage to cable drums during

transportation, observe the following six instructions:

2. Crane handling

Always use yoke to avoid damage to the drum flanges and cable.

Always use lifting bar to avoid damage to the centre hole

3. Fork lift truck handling

The forks must cover the drum entirely. Otherwise the

lagging will be destroyed and the cable will get damaged.


31/32

DRUM

HANDLING

4. Lower gently on to a

level surface

5. Use blocks during unloading

Nail the blocks to the floor

6. Leave space between drums

during unloading

Enough space should be left to prevent dam-

age to cable end and drum flange


32/32

CORPORATE OFFICE

6th Floor, RPG House, 463. Dr. Annie Besant Road, Worli, Mumbai - 400 030. India

Tel. +91-22-66670300, 24937244 | Fax No. +91-22-24930206

email: [email protected] | [email protected] | [email protected]

WORKS

SALES OFFICES

Delhi

N-83,1st Floor,(Above PNB )Pratap Building, Connaught Place,

New Delhi - 110 001. India

Tel. +91-11-66098598, 599

Fax No. +91-11-66098597

Kolkata

Halwasiya Mansion, Ground Floor,

6/2, Moira Street,

Kolkata - 700 017. India

Tel. +91-33-64590654

Fax No. +91-33-22906720

Mumbai

6th Floor, RPG House, 463.Dr. Annie Besant Road, Worli,

Mumbai - 400 030. India

Tel. +91-22-66670300, 24937244

Fax No. +91-22-24930206

Vadodara

421, Center Point,

R. C. Dutt Road, Alkapuri,

Vadodara - 390 007. India

Tel. +91-265-3015454

Fax No. +91-265-3015454

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Flat No.9, KSHITIJ ,1st Floor, 769/6,Lane No.7, Prabhat Road, Deccan

Gymkhana, Pune - 411 004. India

Tel. +91-20-64706061, 6065

Fax No. +91-20-25650414

Hyderabad

406 & 407, Maheshwari Chambers,

Erramanzil, Somajiguda,

Hyderabad - 500 082. India

Tel. +91-40-30901642

Fax No. +91-40-30901642

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Nungambakkam High Road,

Chennai - 600 034. India

Tel. +91-44-28332920, 28332918

Fax No. +91-44-28332917

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C/o. CEAT Limited, Jasmine Mansion,

4th Floor, 19, J. C. Road,Bangalore - 560 002. India

Tel. +91-80-22124444Fax No. +91-80-22124444

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