C-2 Cross Linked - SA Industrial Solutions

ALMA S.r.l.Via Stadio, 252036 Pieve S. Stefano - ItalyTel. +39 0575 7941Fax +39 0575 798026

TRATOS CAVI S.p.a.Via Stadio, 252036 Pieve S. Stefano - ItalyTel. +39 0575 7941Fax +39 0575 [email protected]

TRATOS CAVI S.p.a. filiale CataniaXIII Str. Strad. V.LanciaLoc. Piano D’Arci95121 Catania - ItalyTel. +39 095 7482101Fax +39 095 291059

TRATOS H.V. S.p.a.Via Pian di Guido, 4552036 Pieve S. Stefano - ItalyTel. +39 0575 799429Fax +39 0575 796907

TRATOS LtdUK - Park RoadHolmewood Industrial ParkHolmewood - ChesterfieldDERBYSHIRE S42 5UWTel. +44 01246 858000Fax +44 01246 858001

NORTH WEST CABLES LtdSchool lane, KnowsleyMerseyside L34 9HDTel. +44 01515 483888fax +44 0151 549 1169

TRATOS CAVI Iberica S.L.SpainPaseo de los Parques 6, bloque 6, 1D28109 Alcobendas (Madrid)Tel./ Fax +34 91 6255887

C-2

MEDIUM VOLTAGE CABLES

CROSS-LINKEDPOLYETHYLENE

INSULATIONEngineering Data for

Copper and AluminiumConductors





Cables design page 2

Introduction 3Technical standardsKey cables codeCables marking

Electrical metallic conductors 4

Metal conductor replacement 5Electrical insulation stress

Special performance cables 6

Alternative kind cables 7

Metallic armour cables 8AWG calculation

Quality System 9Conditions for current ratingsSelection cables for alternative current system

Range and dimensions 3.6/6 kV 10-11Range and dimensions 6/10 kV 12-13Range and dimensions 8.7/15 kV 14-15Range and dimensions 12/20 kV 16-17Range and dimensions 18/30 kV 18-19Range and dimensions 26/45 kV 20-21

Apparent electric resistance of the conductor 22Capacity values

Phase reactance values 23

Group rating factors 24-25

Electrical formulas 26

Final tests 27

Storage and handling 28

Installation 28-29

Packaging 29-30

Glossary 31

CONTENTS

C-2 Cross Linked 28-04-2009 9:03 Pagina 1

2

CABLES DESIGN

+TRATOS CAVI+ ARE4H1R-12/20 kV

16 5 4 3 2

d - conductordiameter

I - insulation diameterexcluded outsidesemiconductor layer

D - overall cablediameter

7

7 6 5 4 3 2 1

+TRATOS CAVI+ RE4H1OR-12/20 kV

8

+TRATOS CAVI+ RE4H1ORZR

7 6 5 4 3 28 19

1 Copper or aluminium circular stranded compacted conductor

2 Extruded semi-conducting lay3 XLPE insulation4 Extruded semi-conducting layer5 Copper wires screen6 PVC oversheath7 Marking

SINGLE CORE CABLE

1 Copper circular stranded compacted conductor

2 Extruded semi-conducting layer3 XLPE insulation4 Extruded semi-conducting layer5 Copper tapes screen6 Not hygroscopic filler7 PVC oversheath8 Marking

THREE CORES CABLE

1 Copper or aluminium circular stranded conductor

2 Extruded semi-conducting layer3 XLPE insulation4 Extruded semi-conducting layer5 Copper tapes screen6 Not hygroscopic filler7 Galvanized steel flat wire armour8 PVC oversheath9 Marking

THREE CORES ARMOURED CABLE


3

This booklet is designed to help engineers in the selection of conductors sizes and in the installation of cablessystem.The information provide general cross sectional area, outside diameter, weight, bending radius and handlingcables. Besides you can select the ampacity of a cable and the various factors given for any installationcondition varying from those for which the tables where calculated.Basic data has been calculated in compliance of the conditions as page 9.Furthermore detailed information may be requested directly to our customer’s assistance service office. Pleaseto take into consideration many alternative kind cables with special performances as described on pages 4, 5,6, 7 and 8.We are available to produce cables with AWG conductors size, as shown on page 8, to employ by end-useroperating out from metric-system area.

INTRODUCTION TO MEDIUM VOLTAGE CABLES

TECHNICAL STANDARDS

IEC 60502-2 Power cables with extruded insulation up to 30 kV (Um 36 kV)Uo/U (Um) 3.6/6(7.2) kV 6/10(12) kV 8.7/15(17.5) kV 126/20(24) kV 18/30(36) kV

IEC 60840 Power cables with extruded insulation for rated voltages above 30 kV (Um 36 kV) up to 150 kV(Um 170 kV) Uo/U (Um) 26/45(52) kV

IEC 60228 Conductor of insulated cables

IEC 60332-1 Test for vertical flame propagation for single insulated wire or cable

EN 50265 Test for vertical flame propagation for a single insulated wire or cable

IEC 60287 Calculation of the current rating

CEI 11-17 Generation, trasmission and distribution system of electric power - (domestic standard)(domestic standard) Cables installation

A Aluminium conductorR Conductor class 2 (without any lettere

before R mean copper conductor)E4 XLPE polyetylene insulationG7 HEPR high ethylene propylene rubber

insulationH1 Tapes or wires copper screenH5 Longitudinally thermosealed aluminium

tapeR PVC - polyvinyl chloride sheathE Polyetylene sheathM1 LS0H - low smoke zero halogen

compound

O Mean three phases under the same outersheath

A Steel braid armourAH6 Corrugated aluminium tape

electroweldedH6 Corrugated steel tape electroweldedH9 Corrugated steel tape thermosealedZ Flat steel wires armourN Steel tapes armourNA Aluminium tapes armourF(SWA) Steel wires armourFA(AWA) Aluminium wires armourX Mean three single sheathed cables

assembled together

KEY CABLES CODE

CABLES MARKING

+TRATOS CAVI+ ARE4H1R-12/20 kV 1X240 mm2 IEC 60502-2 4/2007 999

facility

location

cable manufacturername

cable code

rated voltage Uo/U

conductor number and size

lot number and production year

metric marking

technical standards

In order to provide the cable type identification , cable-maker and generally its traceability in compliance ofQuality Guarantee rules, any cables has an entire code continually printed or engraved or embossed on theouter-sheath.


CHARACTERISTICS

code

chemical symbol

density

resistivity at 20°C

electric conductivity

thermal conducivity

breaking load

breaking elongation

elastic module

melting temp.

specific heat

temp. variation coef.

linear dielectric coef.

4

ELECTRICAL METALLIC CONDUCTORS

1- class 2 round stranded not compacted2- class 2 round stranded compacted3- class 5 uniform bunched wires4- class 2 round compacted water blocking5- class 1 round solid6- class 1 shaped solid7- class 1 shaped stranded

Copper and aluminum are the most employed metals for conductors in the cables power production tecnology.Their application is due to different parameters as electric conductivity, density (mass per unit volium),breakingload and elongation, malleability, thermal conductivity, elastic module and finally metal cost-effective. Theshape of conductors and their rigidity or flexibility is designed in consideration of the final application and of therated voltage cable.For medium tension cable is very important a smouth outside surface metal conductor to reduce electricalinsulation stress. For the pourpose any MT conductor is compacted by special tools suitable to calibrate outsidediameter and surface. In all tables we report the nominal cables section expressed in mm2 but the realconductor size considered is difined Electrical Section that is guaranteed by means of check of the maximumappropriate electrical resistance at 20°C in compliance of technical standards.

1 2 3 4 5 76

A L U M I N I U M

ALLOY

-

2.7

32.50

53

1.84

35-40

4-6

6000

657

0.214

0.0036

23

ANNEALED

COPPER

Cu-ETP

Cu

8.89

17.241

100

3.893

20-30

25-30

10500

1083

0.093

0.00393

17

HARD

COPPER

Cu

8.89

17.586

98

3.893

35-50

0.5-3

12000

1083

0.093

0.00393

17

ALUMINIUM

(3/4 HARD)

Al 99.5

Al

2,7

28.264

61

2.218

12-15

1.5-3

5600

657

0.214

0.00403

23

LEAD

Pb

11.35

206

8.4

0,35

1.75

20-50

1700

327

0.030

0.0042

29

STEEL

Fe

7.8

190

9

0.46

40-150

2-6

18500

1400

0.114

0.004

11.5

UNITS

Kg/dm3

O h m . k m / m m2

% IACS*

W/cm.k

daN/mm2

%

daN/mm2

°C

Cal/°C.g

k-1

k-1 (x 10-6)

METAL CHARACTERISTICS

When is necessary to improve a few basic metal characteristics is possible to lose or reduce significant otherproperties. However typical metal characteristcs ordinary way contemplated, over any global evaulation, areindicated in the table below.Copper results to hold the greatest electrical conductivity but despite that its price may be still high if comparedwith aluminium for example. Following information help you a fully technical evaluation.

* International Annealed Copper standard


5

= 0.610.017241 Ohm • mm2/m at 20° C

0.028264 Ohm • mm2/m at 20° CAl resistivity

Cu resistivity

Due to the above equivalence how to change an aluminuim cable in a copper cable and contrariwise:

example

Al cable size 240 mm2 • 0.61 = 146.40 mm2 Cu (mathematical size)consequently the nearest available standard size to use is 150 mm2 Cu

Cu cable size 240 mm2 : 0.61 = 393.44 mm2 Al (mathematical size)consequently the nearest available standard size to use is 400 mm2 Al

Strictly connected to metal market price an important save money may be achieved by to use aluminiumcables instead of copper cables. In this case a calculation of aluminium conductor size, bigger thancopper, is possibile by electrical equivalence formula:

METAL CONDUCTOR REPLACEMENT

UoEx = kV/mm

x In (R/r)

The XLPE insulation is extruded simultaneously with the conductor screen and the insulation screen.The surfaces between inner semicondutor layer and XLPE insulation and between insulation and outsidesemiconductor layer are not exposed to environment conditions.Triple and dry curing extrusion guarantee highproducts quality. Is known that the electrical stress is maximum at the conductor level surface and decreasedrawing up outside insulation layer.In order to avoid stress peak in the medium voltage cable compacted metallic conductors with homogeneousand smooth surface are employed. Besides that the extruded conductor screen allows an uniform electric fieldwhich contributes for a long duration cable life.The insulation thickness may be calculated by following formula.

ELECTRICAL INSULATION STRESS

R radius under insulation screen

r radius over conductor screen

Uo voltage across insulation

kV/mm

r

conductor

level

R

outside

insulation level

INSULATION STRESS VALUE

example 18/36 kV

4.24.0

2.7


6

EN 50265 Test for resistance to vertical flame propagation for a single insulated conductor or cableIEC 60332-1

EN 50266 Test for vertical flame spread of vertically-mounted bunched wires or cablesIEC 60332-3

EN 50267 Test on gases evolved during combustion of materials from cablesIEC 60754

EN 61034 Measurement of smoke density of cables burning under defined conditionsIEC 61034

SPECIAL PERFORMANCE CABLES

FLAME RETARDANT - LOW SMOKE - ZERO HALOGENS (LS0H)

EN 50265IEC 60332-1

EN 50267IEC 60754

EN 61034IEC 61034

EN 50266IEC 60332-3

Fire is one of the most danger for popolations and equipments especially inside structures and in any placewhere it may happen. Very frequently that is due to the very extensive use of cables. They can be an importantcomponents to trigger fire, carry flames everywhere, developping acid gasses and dark fumes very hazardousfor persons.In consideration of past tragic happenings have been developped special cables with particolar performancesreaction to fire as to design cables with components able to avoid issue aggressive substances underburningsevent without loosing or altering any basic feature.

Flame Retardancy - cables in compliance of standards country regualtions suitable to overcome specialresctrict propagation test on single cable or bunched cables with definite volium per meter of non metallicmaterial. Its behaviour is strictly related to the combustion quantity material exposed to the flame, temperatureand aeration.Corrosivity Combustion Gasses - not LS0H during combustion develop great quantities of corrosive andtoxic gasses. New generation cables reduce or entirely remove it.Intensity and Dark Smoke - under fire conditions not LS0H cables release dark smokes that prevent peopleevacuation, that has been restricted ta lot, as a special test able to verify residue light across the smokesshows.


7

ALTERNATIVE KIND CABLES

1- Particularly eligible for installations in contact with water and moisture contact thanks to longitudinallythermosealed aluminium tape screen absoluty safety of transverse tightness.

2- In any habitat place where a limited a EMF level is required we provide through the electrical balance ofconductor and cable screen.

3- Root Cable is a commercial brand cable in aluminium or copper conductor with a non metallic mechanicalprotection made-up of an under outersheath plastic layer able to cushion heavy blow and to safeguard thebelow metallic cable screen.

Alternative kinds of cable are possible to be engineered in order to ensure a long term service with largetolerability for specific working conditions as dry and wet ground, rain and snow, under-water without any cover,direct exposition to the sun, places where cables can be crashed into etc.Electromagnetic Fields (EMF) are one of the most technical matters that affect environment condition thatmay be supervised by an appropriate increase of the cable metallic screen.

1 2 3

4- Self supporting cables for overhead installations through aluminium steel cladding rope laid in the central ofthree single phases. That rope can be replaced with a non metallic rope. This involves a new cable design withan increase screen size to allow electrical current fault discharge.

5- Three-phases underground cable with additional cables service.

6- Composite MT and FO cable where three-phases power elements and telecomunication aggregate fiberoptic cable able to work under the same outersheath.

4 5 6

conductor

conductor conductor

supporting rope

Dcable diameter

phasediameter

phase

cable service

commonoutersheat optical cable

Dcable diameter

Dcable diameter


8

METALLIC ARMOUR CABLES

AWG CALCULATION

AH6 longitudinally overlapping corrugate aluminium tapeH6 longitudinally overlapping corrugate steel tape electroweldedH9 longitudinally overlapping corrugate steel tape thermosealed

A few different types of armour can be designed as protection of cables against crahs ,bl ow, shock, cuts, abra s i o n se t c . F u rt h e rmore in order to avoid electrical induction in the single phase cables the armour must be made-up ofnon-magnetic metals as copper, aluminium, bronze etc..Steel braid armour - a few group of wires braided together in opposite way.Wires armour - a layer of round wires.Tapes armour - double tapes wrapped in the same direction in open helics, the second one to cover underlyings space.Corrugated armour - a single longitudinally smooth tape corrugated by a special tool.Flat wires armour - a layer of wrapped flat wires with a contra ry tape wrapped in open helics.

For any operator in a market where there is in force AWG system the following table can be used to turn mm2to AWG or CM and contrariwise. Please keep in consideration some ineluctable approximate calculation dueto standard metric system size.

A steel braid armour

F (SWA) a layer of wrapped steel round wiresFA (AWA) a layer of wrapped aluminium round wires

Z a layer of wrapped steel flat wires with a contrarysteel tape wrapped in open helics

N double steel tapes wrapped in open helics, the second one to cover underlyings space

NA double aluminium tapes wrapped in open helics, the second one to cover underlyings space

Stand.sizemm2

101625

355070

95120150

185240300

400500630

80010001200

1400160018002000

8 AWG6 AWG4 AWG

2 AWG1 AWG

3/0 AWG

4/0 AWG5/0 AWG6/0 AWG

7/0 AWG8/0 AWG9/0 AWG

10/0 AWG11/0 AWG12/0 AWG

13/0 AWG14/0 AWG15/0 AWG

15/0 AWG16/0 AWG16/0 AWG17/0 AWG

Stand.sizemm2

8.36613.30221.151

33.63142.40885.029

107.219135.219170.485

214.978271.082341.829

431.038543.529685.377

864.2441089.7921374.202

1374.2021732.8371732.8372185.068

CM( circ.mil )

197353157649338

6907398676

138147

187485236823296029

365102473646592058

789410986763

1243321

157882019735252368230

2762935315764035523453947050

Elec. resist.Ohm/km20°C Al

3.081.911.20

0.8680.6410.443

0.3200.2530.206

0.1640.1250.100

0.07780.06050.0469

0.03670.02910.0247

0.02120.01860.01650.0149

Elec. resist.Ohm/km20°C Cu

3.682.29

1.418

0.9030.7560.365

0.2830.2240.181

0.1410.111

0.0877

0.07210.05560.0431

0.03390.02670.0216

0.02160.01710.01710.0136

Elec. resist.Ohm/km20°C Al

2.191.38

0.859

0.5450.4560.220

0.1710.1360.109

0.08520.06670.0527

0.04360.03360.0260

0.02050.01610.0132

0.01320.01040.01040.0082

CM( circ.mil )

165102625141741

6637183693

167806

211600266823336457

424265534988674607

85066410726681352609

170560821507322712023

2712023341979834197984312286

approx.diam.mil *

162.3205.2256.6

303.6362.8429.3

500.1562.1628.4

697.9794.9888.7

1026.21147.31287.9

1451.31622.61777.4

1919.92052.42176.92294.7

approx.diam.mil *

148.4187.1236.0

297.6334.1473.1

531.3596.6670.0

752.3844.8948.7

1065.31196.21343.3

1508.41693.91902.1

1902.12135.92135.92398.5

Elec. resist.Ohm/km20°C Cu

1.831.15

0.727

0.5240.3870.268

0.1930.1530.124

0.09910.07540.0601

0.04700.03660.0283

0.02210.01760.0151

0.01290.01130.01010.0090

Approximate parallel square-mm to AWG Conversion AWG to square-mmAWGreference

*stranded conductor


9

class

B

AB

AB

AB

AB

AB

AB

maximum time for each test

with groundedphase*

over 8 h

up to 8 hover 8 h

up to 8 hover 8 h

up to 8 hover 8 h

up to 8 hover 8 h

up to 8 hover 8 h

up to 8 hover 8 h

with screenon the

single core Uo (kV)

1.8

3.66

68.7

8.712

1215

1826

2630

withoutscreen on the

single-core Uo/U kV

1.8/3

3.6/6–

––

––

––

––

––

Three-phases system characteristics Insulation rating cables

Uo = relates to the nominal tension between a conductor and earth

U = relates to the nominal tension between the conductors of the cable

Um = maximum tension for which the cable is suitable

* The whole annual period must be established in consideration of the environmental conditions

Current ratings values stated in the following schedules have been calculated in compliance with IEC 60287standard.

Current ratings values refer to the following conditions:Conductor maximum temperature 90° CAmbient temperature for installation in open air 30° CAmbient temperature for underground installation 20° C

Laying dephtsmt. 0.8 for voltages U = 3.0÷10kVmt. 1.0 for voltages U = 15÷30kVmt. 1.2 for voltages U = 45kV

Thermal resistivity (Rt)ground 100 and 200° C . cm/WHEPR insulation 450° C . cm/WPVC oversheath 500° C . cm/W

The metallic screen (6 mm2 standard size), jointed together, are connected to earth.

CONDITIONS FOR CURRENT RATINGS

SELECTION OF CABLES FOR ALTERNATIVE CURRENT SYSTEM

QUALITY SYSTEM

Our Quality System management includes twocertificates:Basec (UK) and Aenor (E), in accordance to ISO9001 covering the production, purchasing of rawmaterials, design and final test including variousdocument typologies.Tratos Quality System management is underconstant control by auditing inspectors.

nominaltensionU (kV)

3

6

10

15

20

30

45

maximumtensionUm (kV)

3.6

7.2

12

17.5

24

36

52


10

ARMOURED THREE-CORES RE4H10ZR-3.6/6 kV - ARE4H10ZR-3.6/6 kV

THREE-CORES RE4H10R-3.6/6 kV - ARE4H10R-3.6/6 kV

SINGLE-CORE RE4H1R-3.6/6 kV - ARE4H1R-3.6/6 kV

conductordiameter

d

mm.

3.84.75.97.08.2

9.911.512.914.216.2

18.221.223.427.330.5

insulationthickness

mm.

2.32.32.32.52.5

2.52.52.52.52.5

2.62.83.03.23.2

nominaloverall

diameterD

mm.

12.214.015.621.022.2

23.925.527.028.530.5

33.036.639.344.047.4

maximumoverall

diameter

mm.

14.015.017.022.022.2

24.926.528.029.531.5

34.037.640.345.048.4

minimumbendingradius

mm.

196210238310320

350370390410440

470530560630670

conductordiameter

d

mm.

3.84.75.9

7.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

2.32.32.3

2.52.52.52.5

2.52.52.52.6

nominaloverall

diameterD

mm.

24.224.729.8

41.043.847.751.3

54.557.462.267.4

maximumoverall

diameter

mm.

24.726.231.3

42.545.349.252.8

56.058.963.768.9


mm.

346367438

590630690740

780820890960

approximatecable weight

kg/km

conductordiameter

d

mm.

3.84.75.9

7.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

2.32.32.3

2.52.52.52.5

2.52.52.52.6

nominaloverall

diameterD

mm.

29.231.432.5

46.148.953.056.6

59.862.767.572.7

maximumoverall

diameter

mm.

30.733.934.0

47.650.454.558.1

61.364.269.074.2


mm.

430461476

670706760810

860900970

1040


kg/km

n o m i n a larea conductor

mm2

1x 101x 161x 251x 351x 50

1x 701x 951x1201x1501x185

1x2401x3001x4001x5001x630


mm2

3x 103x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240


kg/km

RANGE AND DIMENSIONS


mm2

3x 103x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240

Al

248274308527594

692799909

10351182

14161710208325453028

Cu

310373463744909

11331397166419802347

29273599460256946995

Cu

96612511640

2726333741815147

610071748562

10571

Al

780954

11752075

239328593352

3832434050676037

Cu

156818802184

3865433555366600

76468773

1031212437

Al

138214151719

3214359042144805

5379593968177903


11

CONTINUOUS CURRENT RATINGS (ampere)



Cu

115135159

187221273322

363405469520

Al

94111130

150172210250

285320359415

Cu

7894

115

140170212249

280313363399

Al

647794

115133162193

220248275329

Cu

93117146

182219275335

362430495583

Al

8198

120

146174213259

298330380450

ground laying

Rt=100 °C cm/W Rt=200 °C cm/Wair laying

Cu

112130154

180220259307

350405450528

Al

91107126

150163208239

268310348400

Cu

7691

111

149182209247

280327362428

Al

627591

112131169193

212249282322

Cu

90113142

176212260320

360430490560

Al

7895

116

145170210243

298330380437

ground laying


Cu

119140166195232

286341388430487

565640726815913

Al

97112133150182

221256302339385

442508580652745

Cu

114135158185220

268322368411467

540610692764873

Al

92108127146172

209250285327364

416477548617711

Cu

95110128151175

216257289325365

421473535597667

Al

7992

106123139

167201230255289

327376426478551

Cu

89105122141166

203242272306341

400450511569640

Al

7386

100113130

156188214245270

307352402450522

Cu

127150177208240

300380430498585

683790905

10191200

Al

102120142152190

240290334398450

525630730857

1000

Cu

106125147173199

242314360415495

579672770817

1020

Al

85101118138151

194231270327368

469527613725847

ground laying


• • • • • ••

• • •

• • • • ••

• •


mm2

1x 101x 161x 251x 351x 50

1x 701x 951x1201x1501x185

1x2401x3001x4001x5001x630


mm2

3x 103x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240


mm2

3x 103x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240



12

ARMOURED THREE-CORES RE4H10ZR-6/10 kV - ARE4H10ZR-6/10 kV

THREE-CORES RE4H10R-6/10 kV - ARE4H10R-6/10 kV

SINGLE-CORE RE4H1R-6/10 kV - ARE4H1R-6/10 kV

conductordiameter

d

mm.

3.84.75.97.08.2

9.911.512.914.216.2

18.221.223.427.330.5

insulationthickness

mm.

3.43.43.43.43.4

3.43.43.43.43.4

3.43.43.43.43.4

nominaloverall

diameterD

mm.

17.719.521.022.824.0

25.727.329.030.332.5

34.737.940.344.447.8

maximumoverall

diameter

mm.

18.720.622.223.825.0

26.728.330.031.333.5

35.738.941.345.448.8


mm.

262289315330350

370390420440470

500540580630680


kg/km

conductordiameter

d

mm.

3.84.75.9

7.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

3.43.43.4

3.43.43.43.4

3.43.43.43.4

nominaloverall

diameterD

mm.

34.737.237.7

45.247.951.855.5

58.961.966.471.1

maximumoverall

diameter

mm.

35.738.238.7

46.248.952.856.5

59.962.967.472.1


mm.

500535542

640680740790

840880940

1010


kg/km

conductordiameter

d

mm.

3.84.75.9

7.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

3.43.43.4

3.43.43.43.4

3.43.43.43.4

nominaloverall

diameterD

mm.

38.039.845.2

50.453.157.060.7

63.966.971.676.1

maximumoverall

diameter

mm.

39.140.946.3

51.454.158.061.7

64.967.972.677.1


mm.

547573648

720760810860

910950

10201080


kg/km

Cu

403581664819993

12371506179821132508

30883802480658717187


mm2

1x 101x 161x 251x 351x 50

1x 701x 951x1201x1501x185

1x2401x3001x4001x5001x630


mm2

3x 103x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240


mm2

3x 103x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240


Al

341482509602678

796908

104311681343

15771913228627223220

Cu

108819812058

3106373946145611

662077229115

11108

Al

90216831893

2456279532923817

4353488756206574

Cu

158028763529

4358507960557151

82229416

1097913042

Al

139425783064

3707413547325356

5955658274848508


Cu

100122148

181219270325

364413455530

13




air laying

Cu

97118143

183215250273

352402450519

Al

7997

116

150171200243

281272345410

Cu

7794

113

150174199258

281318457410

Al

627691

114128156193

211209262316

Cu

103122147

179220275315

373419484550

Al

8399

119

146168210245

278329380450

ground laying


Cu

111134161194233

283340384431486

564631720809905

Al

85103124151179

223265302340382

443503575653739

Cu

125140151182219

268318366409462

540604690780879

Al

96108110140168

213249284318358

430479545631719

Cu

82100122149181

217256292325365

423474635605674

Al

657894

113137

166201229256287

328380434493554

Cu

85102123141169

203245275307344

398449509572648

Al

657995

108127

156186212240267

309356406461527

Cu

128151178209241

320370444493580

686795925

10011208

Al

102121142152193

243302340395

465550620720820970

Cu

124145175195204

285311380420

497594688804864

1065

Al

105116140156163

205256288337

412475528616700954

ground laying


• • • • • ••

• • •

• • • • ••

• •


mm2

1x 101x 161x 251x 351x 50

1x 701x 951x1201x1501x185

1x2401x3001x4001x5001x630


mm2

3x 103x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240



mm2

3x 103x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240

Al

81100120

151170213249

283318350418

Rt=100 °C cm/W

Al

85101122

146172214250

287334380453

Cu

106126152

185224279337

373430499583

Al

647894

114132167195

218246270326

Cu

8097

117

143174212255

284318356411

Rt=200 °C cm/W

ground laying


14

ARMOURED THREE-CORES RE4H10ZR-8.7/15 kV - ARE4H10ZR-8.7/15 kV

THREE-CORES RE4H10R-8.7/15 kV - ARE4H10R-8.7/15 kV

SINGLE-CORE RE4H1R-8.7/15 kV - ARE4H1R-8.7/15 kV

conductordiameter

d

mm.

8.75.97.08.2

9.911.512.914.216.2

18.221.223.427.330.5

insulationthickness

mm.

4.54.54.54.5

4.54.54.54.54.5

4.54.54.54.54.5

nominaloverall

diameterD

mm.

21.023.025.026.5

28.229.831.432.734.9

37.140.342.546.850.2

maximumoverall

diameter

mm.

22.024.026.027.3

29.230.832.433.735.9

38.141.343.547.851.2


mm.

308336360380

410430450470503

530580610670717


kg/km

conductordiameter

d

mm.

4.75.9

7.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

4.54.5

4.54.54.54.5

4.54.54.54.5

nominaloverall

diameterD

mm.

39.943.8

50.052.856.760.3

63.566.571.275.6

maximumoverall

diameter

mm.

41.044.8

51.053.857.761.3

64.567.572.276.6


mm.

574627

710750810860

903940

10101070


kg/km

conductordiameter

d

mm.

4.75.9

7.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

4.54.5

4.54.54.54.5

4.54.54.54.5

nominaloverall

diameterD

mm.

45.549.8

55.157.961.865.4

68.871.876.381.0

maximumoverall

diameter

mm.

46.650.9

56.158.962.866.4

69.872.877.382.0


mm.

652713

780820880930

980102010821140


kg/km


mm2

1x 161x 251x 351x 50

1x 701x 951x1201x1501x185

1x2401x3001x4001x5001x630


mm2

3x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240


mm2

3x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240


Cu

636748920

1106

13601579193622542660

32463920490460007321

Al

536599695700

902981

118013101495

17352031238528523354

Cu

19712347

3596425451706195

721283389812

11813

Al

16731882

2946331038484400

4945550463177279

Cu

35434220

4975572367397906

9000102241177013957

Al

32453775

4324477954166112

6733739082759423


Cu

133156

184219259319

350400451535

Al

106122

145170205243

274318350413

Cu

97119

145177208251

277318353416

Al

7693

112134160189

213250271327

Cu

136160

190224273338

373439498585

Al

109128

150173215253

300340385459


mm2

3x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240

15




ground laying


Cu

129151

180215253310

349400430510

Al

103118

144169200240

273305349402

Cu

94115

147174203247

279322341407

Al

7490

124138162191

221243281321

Cu

132155

181223270329

362415500585

Al

106124

146170215253

293329360453

ground laying


Cu

140165194228

277333381427484

556630709803894

Al

112132150178

219261299332378

437495574638735

Cu

133156183217

263315363406461

530602679775873

Al

105122143168

207246282314357

415469545619715

Cu

109128151177

213254293326368

420473527601670

Al

89105124138

169199227253286

330373431478556

Cu

103121142168

201239277308349

399449508582654

Al

8094

109129

156186213236268

311351407453531

Cu

152179211250

311382439505560

694796905

10301500

Al

116136158193

243298320382420

543615702740950

Cu

150176186190

294333383462550

621711832975

1375

Al

98124147183

231280327363418

494574689876917

ground laying


• • • • • ••

• • •

• • • • ••

• •


mm2

1x 161x 251x 351x 50

1x 701x 951x1201x1501x185

1x2401x3001x4001x5001x630


mm2

3x 163x 25

3x 353x 503x 703x 95

3x1203x1503x1853x240



16




conductordiameter

d

mm.

6.07.08.29.9

11.5

12.914.216.218.221.2

23.427.330.5

insulationthickness

mm.

5.55.55.55.55.5

5.55.55.55.55.5

5.55.55.5

nominaloverall

diameterD

mm.

26.027.128.530.232.0

33.434.937.139.142.3

44.748.852.4

maximumoverall

diameter

mm.

27.028.129.531.233.0

34.435.938.140.143.3

45.749.853.4


mm.

380390410440460

480500530560600

640700750


kg/km

conductordiameter

d

mm.

6.07.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

5.55.55.55.55.5

5.55.55.55.5

nominaloverall

diameterD

mm.

52.454.557.461.265.0

68.271.275.680.5

maximumoverall

diameter

mm.

53.455.558.462.266.0

69.272.276.682.0


mm.

750770810870920

970101010701140


kg/km

conductordiameter

d

mm.

6.07.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

5.55.55.55.55.5

5.55.55.55.5

nominaloverall

diameterD

mm.

57.559.862.766.570.1

73.576.380.985.5

maximumoverall

diameter

mm.

58.560.863.767.571.1

74.577.381.986.5


mm.

820850890940990

1040108011401210


kg/km


mm2

1x 251x 351x 501x 701x 95

1x1201x1501x1851x2401x300

1x4001x5001x630


mm2

3x 253x 353x 503x 703x 95

3x1203x1503x1853x240


mm2

3x 253x 353x 503x 703x 95

3x1203x1503x1853x240

Cu

8921021121614641769

20522391280533814065

507761667526

Cu

36114083477157146810

78479000

1048112700

Cu

50455630638174508614

9780109621261114792

Al

737804902

10241171

12971447164018702176

255330173559

Al

31463432382643925015

5580616669868200

Al

45804979543661286820

751381289116

10258



17




Cu

153185216263319

354405445529

Al

124144172200243

274310349413

Cu

130145172207254

279323351414

Al

104117138157190

216244275325

Cu

155190222272330

375430500590

Al

125150175209253

300339383454

ground laying


Cu

159180220263320

359410452525

Al

124143171202249

280310342405

Cu

128142174207254

284326355413

Al

103114136159196

222242268317

Cu

160184222270334

362439502583

Al

125150174215260

300319373465

ground laying


Cu

160191227277333

380426482557620

715785890

Al

125151175218258

297330375429491

565639738

Cu

154185220271319

364414466540604

695770874

Al

125146169213248

284319364416478

551623724

Cu

126148176214255

290324366421466

538585664

Al

101115135169196

225251285323370

427473452

Cu

118141169209247

280316356410455

523576655

Al

96111131173190

218243275312360

416466545

Cu

173210250312383

437500572675773

89010201182

Al

130160193243301

342393458520615

703825948

Cu

154189224277340

386441506600589

798914

1078

Al

119147169215265

300343404462539

620727859

ground laying


• • • • • ••

• • •

• • • • ••

• •


mm2

1x 251x 351x 501x 701x 95

1x1201x1501x1851x2401x300

1x4001x5001x630


mm2

3x 253x 353x 503x 703x 95

3x1203x1503x1853x240


mm2

3x 253x 353x 503x 703x 95

3x1203x1503x1853x240




kg/km

Cu

698182129360

10610

11812131361489017166

Al

6330726780388815

9545103021139512630


kg/km

Cu

4138627373198469

9575108061242014563

Al

3482532859976674

730879728925

10030


kg/km

Cu

1315151217922114

2406274231763788

4502553466627820

Al

1098119813501516

1650179820102277

2613301535133953

18

ARMOURED THREE-CORES RE4H10ZR-v - ARE4H10ZR-18/30 kV



conductordiameter

d

mm.

7.08.29.9

11.5

12.914.216.218.2

21.223.427.330.5

insulationthickness

mm.

8.08.08.08.0

8.08.08.08.0

8.08.08.08.0

nominaloverall

diameterD

mm.

32.333.735.637.4

38.840.142.344.5

47.749.854.255.4

maximumoverall

diameter

mm.

33.334.736.638.4

39.841.143.345.5

48.750.855.257.4


mm.

466486512538

558576606640

680710710775

conductordiameter

d

mm.

7.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

8.08.08.08.0

8.08.08.08.0

nominaloverall

diameterD

mm.

61.468.972.876.5

79.782.787.491.9

maximumoverall

diameter

mm.

62.869.973.877.5

80.783.788.492.9

conductordiameter

d

mm.

7.08.29.9

11.5

12.914.216.218.2

insulationthickness

mm.

8.08.08.08.0

8.08.08.08.0

nominaloverall

diameterD

mm.

67.374.278.181.8

85.088.092.797.2

maximumoverall

diameter

mm.

69.375.279.182.8

86.089.093.798.2


mm.

956105011001160

1200124013101370


mm2

1x 351x 501x 701x 95

1x1201x1501x1851x240

1x3001x4001x5001x630


mm2

3x 353x 503x 703x 95

3x1203x1503x1853x240


mm2

3x 353x 503x 703x 95

3x1203x1503x1853x240


mm.

873980

10301080

1130117012401300



19




Cu

184219260319

369402450528

Al

142169205243

285313355412

Cu

150177206254

297323359420

Al

116137167192

228250284327

Cu

180220268325

380440495570

Al

139170215252

299333382448

ground laying


Cu

178215255315

350394450513

Al

138165203238

282305355403

Cu

147177202251

277321357407

Al

114134162188

227241282320

Cu

175216262319

365435485559

Al

135167210249

290326377450

ground laying


Cu

186227278330

374425487552

635705803899

Al

145179213258

291330379429

489553631719

Cu

180220269318

363414473438

622692788890

Al

140173208247

281319361417

474540618704

Cu

146178216255

287327375423

488537608680

Al

114139166198

221253285326

372419477539

Cu

142173210247

279318365411

477527599675

Al

112137160191

214245276317

361409467532

Cu

203250310380

430470573670

763882

10201152

Al

158195243300

341380443525

603698795906

Cu

182225278341

386418513604

6918019331072

Al

140174119268

304349394471

539627715829

ground laying


• • • • • ••

• • •

• • • • ••

• •


mm2

3x 353x 503x 703x 95

3x1203x1503x1853x240


mm2

3x 353x 503x 703x 95

3x1203x1503x1853x240


mm2

1x 351x 501x 701x 95

1x1201x1501x1851x240

1x3001x4001x5001x630




kg/km

Cu

10660118631324215044

Al

9425101871101012254

20




conductordiameter

d

mm.

9.911.5

12.914.216.2

insulationthickness

mm.

1010

1099

nominaloverall

diameterD

mm.

81.084.8

87.888.390.6

maximumoverall

diameter

mm.

84.087.8

90.891.393.6


mm.

11361188

123012781310


kg/km

conductordiameter

d

mm.

9.911.512.914.2

insulationthickness

mm.

101010

9

nominaloverall

diameterD

mm.

87.090.393.294.6

maximumoverall

diameter

mm.

90.093.396.099.0


mm.

1220126513441386

Cu

86159711

110121135912694

Al

73938152

891587989596

conductordiameter

d

mm.

9.911.512.9

14.216.218.2

21.223.427.330.5

insulationthickness

mm.

101010

999

9999

nominaloverall

diameterD

mm.

37.739.341.1

40.442.444.4

47.850.054.358.0

maximumoverall

diameter

mm.

40.041.643.4

43.045.047.0

50.352.556.860.5


mm.

560570590

580600640

680720790820


kg/km

Cu

192922242558

272931403681

4410542764417879

Al

151016591834

183122212237

2583295033594006


mm2

1x 701x 951x120

1x1501x1851x240

1x3001x4001x5001x630


mm2

3x 703x 95

3x1203x1503x185


mm2

3x 703x 953x1203x150



Cu

242289326366

Al

190226258288

Cu

199235262294

Al

157186208229

Cu

256308354399

Al

200242276314


mm2

3x 703x 953x1203x150

RANGE AND DIMENSIONS - MEDIUM TENSION

21




Cu

266320358

408455530

591678750905

Al

210253284

320363420

474540612802

Cu

260310340

397448520

583670745895

Al

205248279

312355414

465530602780

Cu

208250283

310353408

449507569648

Al

166199225

245278320

360402455524

Cu

203244280

306348404

444505565642

Al

160192215

241271314

352398450517

Cu

320386

47

505580680

772886

10201185

Al

250304350

401460537

668715829971

Cu

287349401

453520615

704815942

1078

Al

224275316

360409485

553645749873

ground laying


• • • • • ••

• • •

• • • • ••

• •

Cu

247295

333374422

Al

194231

263294332

Cu

199235

267300335

Al

159186

212234263

Cu

261314

361407465

Al

205247

282320366

ground laying


ground laying



mm2

1x 701x 951x120

1x1501x1851x240

1x3001x4001x5001x630


mm2

3x 703x 95

3x1203x1503x185


26/45 kV

–––––

0.120.140.160.180.200.220.240.260.280.31

22

Three-cores cablesSingle-core cables

Single-core cables

copper conductors aluminium conductors

aluminium cond.

3.7802.3921.5121.0940.8180.5660.4090.3220.2650.2110.1630.1330.1060.08530.0704

all voltages

copper cond.

2.3461.4790.9370.6750.4990.3440.2500.1980.1630.1300.1000.08150.06580.0536

aluminium cond.

3.8452.4311.5421.1120.8180.5650.4100.3250.2640.2130.1640.1340.1080.0879

all voltages

12/20 kV15/20 kV18/30 kV

––

1.5121.0940.8180.5660.4090.3230.2630.2100.1610.1300.1020.08120.0649

12/20 kV15/20 kV18/30 kV

––

0.9360.6760.4990.3450.2480.1970.1610.1270.09820.07880.06230.04940.0393

26/45 kV

–––––

0.3450.2480.1970.1610.1270.09810.07860.06220.04910.0391

26/45 kV

–––––

0.5660.4090.3230.2630.2100.1610.1290.1020.08050.0645

d d

n o m i n a larea

c o n d u c t o rmm2

10162535507095

120150185240300400500630

3.6/6 kV

3.7802.3921.5121.0940.8180.5660.4090.3230.2630.2100.1600.1300.1020.08120.0649

6/10 kV8.7/15 kV

–2.3921.5121.0940.8180.5660.4090.3230.2630.2100.1600.1300.1020.08100.0646

n o m i n a larea


10162535507095

120150185240300400500630

A P PARENT ELECTRIC RESISTANCE OF THE CONDUCTOR (Ohm/Km) AT 50Hz AND AT 90°C

CAPACITY VALUES AT 50 Hz (µF/Km)

3.6/6 kV

2.3101.4550.9370.6740.5000.3450.2490.1980.1610.1270.09840.07890.06240.04960.0395

6/10 kV8.7/15 kV

2.3101.4550.9360.6760.4990.3450.2480.1970.1610.1270.09830.07870.06240.04950.0394

copper cond.

1.3101.4550.9360.6750.4990.3450.2500.1970.1620.1300.09950.08050.06440.05210.0429

n o m i n a larea


10162535507095

120150185240300400500

8.7/15 kV

0.1500.1550.160.190.200.210.260.280.300.330.360.400.440.480.55

12/20 kV

––

0.130.150.170.200.220.240.260.280.300.330.360.410.46

18/30 kV

–––

0.120.130.150.170.190.200.210.230.260.270.300.34

6/10 kV

0.170.1750.190.210.250.270.300.340.370.390.420.480.530.600.69

3.6/6 kV

0.1750.1850.190.210.250.270.300.340.370.390.420.480.530.600.69

n o m i n a larea


10162535507095

120150185240300400500630


23

6/10 kV

0.150.160.190.190.180.170.170.160.160.160.160.150.150.150.15

12/20 kV

––

0.210.200.190.190.180.180.170.170.160.160.160.150.15

18/30 kV

–––

0.210.200.200.190.180.180.180.170.170.160.160.16

26/45 kV

–––––

0.210.200.190.190.180.180.170.170.170.16

8.7/15 kV

0.160.180.200.190.190.180.170.170.170.160.160.160.150.150.15

n o m i n a larea


10162535507095

120150185240300400500630

12/20 kV

––

0.150.140.130.130.120.120.110.110.110.100.0980.0960.093

18/30 kV

–––

0.160.150.140.130.130.120.120.110.110.110.100.098

26/45 kV

–––––

0.150.140.140.130.120.120.120.110.110.10

3.6/6 kV

0.150.140.130.120.110.110.100.100.0980.0940.0910.0890.0870.0830.082

8.7/15 kV

0.160.150.140.140.130.120.120.110.110.110.100.0980.0960.0920.090

6/10 kV

0.140.130.120.110.110.100.0970.0940.0910.0870.0850.0840.0820.078

12/20 kV

––

0.140.130.120.110.100.100.100.0970.0940.092

––

18/30 kV

–––

0.140.130.130.120.120.110.110.100.10

––

26/45 kV

–––––

0.140.130.130.120.11

––––

8.7/15 kV

0.50.140.130.120.120.110.100.100.0970.0940.0900.0880.086–

n o m i n a larea


10162535507095

120150185240300400500

Single-core cables

Three-cores cables

Single-core cables (average value)

6/10 kV

0.160.150.140.130.120.120.110.110.100.100.0970.0950.0910.0890.087

PHASE REACTANCE VALUES AT 50 Hz (0hm/km)

d d

3.6/6 kV

0.130.150.180.180.170.170.160.160.160.150.150.150.150.140.14

n o m i n a larea


10162535507095

120150185240300400500630

3.6/6 kV

0.130.120.110.100.0960.0920.0880.0860.0840.0820.0790.0770.0750.074


24

THREE-CORES CABLES AIR LAY I NG

THREE-CORES CABLES (OR SINGLE-CORE CABLES ENCLOSED IN TREFOIL) GROUNDED PIPE LAY I N G

THREE-CORES CABLES (OR SINGLE-CORE CABLES ENCLOSED IN TREFOIL) GROUNDED LAYING

AMBIENT TEMPERATURE DIFFERENT FROM STANDARD CONDITIONS

* Not exposed to direct sunlight

15

1.04

–

20

1.00

1.09

25

0.96

1.09

30

0.92

1.00

35

0.88

0.95

40

0.84

0.90

45

0.80

0.85

50

–

0.79

55

–

0.74

60

–

0.67

65

–

0.60

Number of cables or trefoil-set (horizontally)

Space between cables or trefoil-sets

7 cm

25 cm

2

0.84

0.86

3

0.74

0.78

4

0.67

0.74

6

0.60

0.69

Number of cables (horizontally) 1

0.82

2

0.69

3

0.61

Number of cables (horizontally)


Number of layers(vertically)

1

1.00

1.00

1.00

2

0.98

0.95

0.94

3

0.96

0.93

0.90

1

2

3

6

0.93

0.90

0.87



1

0.95

0.95

0.95

2

0.84

0.80

0.78

3

0.80

0.76

0.74

1

2

3

6

0.75

0.71

0.70

1

0.95

2

0.90

3

0.88

6

0.85

Number of cables (vertically) 1

1.00

2

0.93

3

0.90

6

0.87

Number of cables (vertically) 1

0.95

2

0.78

3

0.73

6

0.68

Ambient temperature °C

Ground laying cables

Air Cables*

1.5 d

d

� 0.5 d

d d

~0,3 m

� 0.5 d

dd

d

d

� 1/3 d

~0,3 m

G ROUP RATING FAC TO R S


1

0.89

2

0.86

Number of trefoil sets (vertically)

25

PHASE LAY-OUT FOR SINGLE-CORE CABLES CONNECTED IN PARALLEL TO PROVIDE CORRECTCURRENT SPLITTING

SINGLE-CORE CABLES AIR LAYING HORIZONTA L LY AND V E RT I C A L LY SPACED OUT

SINGLE-CORE CABLES TREFOIL AIR LAY I N G

3

1

0.92

2

0.89

4

0.97

Number of trefoil sets (horizontally)



1

2

3

1

1.00

1.00

1.00

2

0.98

0.95

0.94

3

0.96

0.93

0.90



1

2

3

1

1.00

0.97

0.96

2

0.97

0.94

0.93

1

0.95

2

0.90

3

0.88

4

0.87


1

0.94

2

0.91

Number of trefoil sets (vertically)

2 4Number of trefoil setsin the same layer*

2

RST TSR RST TSR RST TSR

4Number of trefoil setsin the same layer*

Trefoil laying cables

Horizontally or vertically spaced-out cables

*When cables are installed on several layers their lay-out must be repeted for each layer.

d

2 d� 0.5 d

d

2 d� 0.5 d

~0,3 m

� 0.5 d

d d

~0,3 m

� 0.5 d

d d

� 1/3 d

d

d

d

d

TRS

TRS

TSR

TSR

TRS

TSR

TRS

TRS

TSR

G ROUP RATING FAC TO R S


26

Nominalvoltage kV

Uo/U

1.8/33.6/66/10

8.7/15

12/2018/3026/45

Copper

1.42.33.65.07.1

1014172126

3443577290

SHORT CIRCUIT RATING

VOLTAGE DROP

COMPARISON BETWEEN RATED VOLTAGES AND INSULATION RATE

K factor (final temperature = 250°C)

To calculate the current allowed in the screen you canuse the same fo rmula indicated above for theconductor with the factor K = 180°C.

The following table reports the values in KAof the current calculated for the startingtemperature of 90°C and for the duration of1 second.

Uo = relates to the nominal tension between a conductorand earth

U = relates to the nominal tension between the conductors of the cable

Um = greatest tension which the cable is suitable

Starting temperature

Area conductor

mm2

1016253550

7095

120150185

240300400500630

Aluminium

0.91.52.33.24.6

6.48.7

111417

2228374658

K SIcc =

� t(A)

.

The voltage drop can be calculated by the following formula for connections in alternating current:

where:∆V = voltage drop (V)K = 1,73 for three-phase systemK = 2 for single-phase systemL = connection length (km)I = current rating (A)R = conductor resistance at using temperature (Ohm/km)X = phase reactance (Ohm/km)cosø = power factor

For direct current connection cosø =1

∆V = K . L . I (R . cosø + X . senø)

Material

Conductor

copper

aluminium

50

165

107

70

154

100

90

143

92

ELECTRICAL FORMULAS

The maximum short circuit current allowed for short period of time (a few seconds) for copper or aluminiumconductors can be calculated by the fo l l owing fo rmu l a :

where:Icc = short circuit current (A)K = factor of the conducting material

which obtained from the difference between starting and final temperature of short circuit;K copper = 143K aluminium = 92

S = area conductor (mm2)t = duration of short circuit (sec.)

Insulationrate

8111724

324767

Maximumvoltage kV

Um

3.67.212

17.5

243652


Insulation rated voltage

Uo kV

3.66.08.7

121826

Electrical tests after installation in c.c. for 15’

kV

14.42434.8

4872104

The final tests to which the Medium Vo l t age c a bles are subjected are in compliance with IEC 60502-2 standard.

Routine tests• Electrical resisistance of conductor• Partial discharge on cables having cores with conductors screens and insulation screens• Voltage test

Sample tests• Conductor examination• Chek of dimensions• Voltage test for cable of rated voltage above 3,6/6 (7.2) kV• Hot set test for EPR, HEPR and XLPE insulations and elastomeric sheaths

Electrical type tests• Partial discharge test• Bending test • Tanδ measurement• Heating cycle test• Impulse test• Voltage test

Non-electrical type tests• Thickness of insulation• Thickness of non-metallic sheaths• Mechanical properties of insulation before and after ageing• Mechanical properties of non-metallic sheaths before and after ageing• Additional ageing test of completed cables• Loss of mass test on PVC sheaths of type ST2

• Pressure test at high temperature on insulation and non-metallic sheaths• Test on PVC insulation and sheaths at low temperatures• Test for resistance of PVC insulation and sheaths to cracking (heat shock test)• Ozone resistance test for EPR anf HEPR insulations• Hot set test for EPR, HEPR and XLPE insulation and elastomeric sheaths• Oil immersion test for elastomeric sheaths• Water absorption test on insulation• Flame retardance test• Carbon black content of black PE oversheath• Shrinkage test for XLPE insulation• Thermal stability test for PVC insulation• Determination of hardness of HEPR insulation• Determination of elastic modulus of HEPR insulation• Shrincage test for PE oversheaths• Strippability test for insulation scren• Water penetration test

Electrical tests after installationTests after installation are made, if required, when the installation of the cable and its accessories has beencompleted. They are for new installations only.• d.c. voltage equal to 4 Uo shall be applied for 15 min.

As an alternative, and by agreement between the contractor and purchaser, an a.c. voltage tes at power fre-quency, in accordance with indicated below:• test for 5 min. with the phase-to-phase voltage of the system applied between the conductor and the metal-lic screen;• test for 24 hours with the normal operating voltage of the system.

27

FINAL TESTS


28

STORAGE AND HANDLING

The drums storage and movement shall be carried out with crane or forklift truck. It is not allowed to drop drumsfrom the truck to the floor. All cables during transport and handling can be demaged so we suggest to verifybefore and during installation procedure any possible demage to avoid heavy problems during cable workinglife. For the benefit of the workers involved in electrical work is absolutely necessary to observe some safetyrules normaly indicated on the local still in force standards.Do not remove staves and cable end caps until the cable will be laid down. If you cut a piece of cable leavingthe rest in a open stock put on again ends protections. Unwind and rewind cables as shown in the pictures. Incase of transfering from one drum to an other remember the minimum bending cable radius and consequentlythe barrel drum diameter.

INSTALLATION

We summarize some rules to be observed during the installation of MV cables for fixed layng. In order to pro-vide easy operations we suggest do not work at cable temperature below than 5°C. Cables bending radius areindicated in Range and Dimensions tables and they must be to value carefully. For unarmoured cables and inorder to pull cable inside pipes or trench it is advisable to apply the pool force on the conductors being carefuldo not exceed 5 kg/mm2 of total area for copper cables and 3 kg/mm2 for aluminium cables.

Example:copper cable 1 x 240 mm2: max pull force kg 1200 aluminium cable 1 x 240 mm2: max pull force kg 720copper cable 3 x 240 mm2: max pull force kg 3600 aluminium cable 3 x 240 mm2: max pull force kg 2160

For steel cable armour the strain rope will be applied to the armour while the pool force by steel braid is advi-sable only for limited efforts.If there are curves along the lay route must be placed a sufficients conveyers, for example at the entrance ofpipes, suitable to keep the cable in the right direction line in order to avoid to exceed the maximum pulling loadallowed.

Concerning overhead cables any strain will be charged on the supporting rope for installaion operations andduring working time.

wrong correct wrong correct

A A A A

B B B B

correct

wrong wrong wrong wrong

correct

correct correct


29

Besides data reported in this booklet is always important to consider the effects of thermal dissipation.All installations in parallel trefoil must be realized with maximum care in order to aim the most balanced char-ge distribution on the cables connected to the same phase.Therefore please consider the following infomation:

• all cables must have the same metal conductors• all cables must have the same lenght and section• the bundle cables must be made-up following R, S and T phases system as indicated on page 25• the cables must be properly spaced • right and balanced connections to the cables terminals

PACKAGING

How to draw the cable

correct correct

correct

wrong

HOW TO SELECT THE DRUM

Example:1 - kind cable ARE4H1R-12/20 kV 1x240 mm2 see page 16

overall cable diameter mm 39.1 a round figure mm 40minimum bending radius mm 560cable quantity mt 500

2 - determination of drum barrel diameter = mm 560 x 2 = 1120 mm consequently qualified drums areB L 1 8 0 / 2 0 0 / 2 2 0 / 2 5 0 .

3 - outcome = following above practice the more convenient drum able to contain mt 500 is BL 180

DRUMS CAPACITY (meters)

17758

10963

7435

5372

4062

3179

2555

1859

1343

1015

795

639

525

439

372

320

277

243

215

195

178

13901

8582

5820

4205

3180

2488

2000

1455

1051

795

622

500

411

343

291

250

217

190

168

153

139

8320

5137

3484

2517

1903

1489

1197

871

629

476

372

299

246

205

174

150

130

114

101

91

5991

3698

2508

1812

1370

1072

862

627

453

343

268

215

177

148

125

108

94

3441

2124

1441

1041

787

616

495

365

260

197

154

124

102

5248

3240

2197

1588

1200

939

755

549

397

300

235

189

155

130

110

94

2041

1260

855

617

467

365

294

202

154

117

91

994

614

416

301

227

178

143

104

75

130

3

805

546

394

298

233

188

136

99

769

475

322

233

176

138

111

80

446

275

187

135

102

80

Cable

diameter

mm

DRUM TYPE

BL60 BL70 BL80 BL90 BL100 BL120 BL140 BL160 BL180 BL200 BL220 BL250

11896

7344

4981

3599

2721

2129

1712

1245

900

680

532

428

351

294

249

214

186

163

144

131

119

11

14

17

20

23

26

29

34

40

46

52

58

64

70

76

82

88

94

100

105

110


30

DRUM

TYPE

Battenweight

Kg

11

16

21

23

30

42

56

75

106

121

135

148

Global

volume

m3

0.17

0.25

0.34

0.42

0.62

1.10

1.60

2.40

3.70

4.50

5.60

6.50

435

515

575

575

685

760

920

1.070

1.320

1.320

1.320

1.320

F

mm

BL60

BL70

BL80

BL90

BL100

BL120

BL140

BL160

BL180

BL200

BL220

BL250

690

770

860

960

1.060

1.310

1.460

1.660

1.860

2.060

2.300

2.510

630

710

800

900

1.000

1.250

1.400

1.600

1.800

2.000

2.240

2.450

315

355

400

450

500

630

710

900

1.120

1.250

1.400

1.500

80

80

80

80

80

80

80

80

80

125

125

125

315

400

450

450

560

630

750

900

1.120

1.120

1.120

1.120

15

20

25

36

44

77

113

182

319

387

478

560

A

mm

B

mm

C

mm

D

mm

E

mm

Drumweight

Kg

A - Flange diameter including circumference battenB - Flange diameter without circumference battenC - Inner barrel diameterD - Axis holeE - Inner widthF - External width

DRUMS DIMENSION

ABC

E

FD

A

NOTEThe data belong to the standard wooden drums daily in force in all Tratos Cavi facilities. Neverthless for uncom-mon cable lengths there are available very large wooden and metallic drums. In this cases transport resctric-tions have to be considered like special law-loading trailers and permits from traffic authorities in accordancewith local regulations.


31

GLOSSARY

A . C . - A l t e rnating current in which the charge-flowp e riodically reve r e s

Accesories - Components necessary to cabl e sn e t wo rk connection

Aluminium conductor - An aluminium wire or gr o u pof wires

Aluminium screen - Usually a longitudinal smooth orc o r rugated aluminium tape ove rlapped andt h e rm o s e a l e d

AWG - A m e rica Wire Gauge

Bending radius - M i n i mum bending radius a cabl ecan be bent without permanent demage

BS - B ritish Standard (UK)

C a ble tray - A channel system used to hold ands u p p o rt power cabl e

C a ble pipe - A pipe used to contain power cabl e

Capacitance - The value of the capacity of a dielectri cm a t e rial between two conductors

CEI - Comitato Elettrotecnico Italiano

Compacted conductor - Ansure regular conductordiameter avoiding stress to insulation laye r

Conductor losses - Power losses due to theresistance of conductors

Conductor screen - An ex t rusion layer direct on thec a ble conductor of a semi-conductin material top r ovide regular distri bution of electrical stress

Copper conductor - A copper wire or group of wires

Copper screen - O ve rlapping spira l - wound coppertapes or copper wires to coil up

Dielectric - G e n e rally a non metallic material with highr e s i s t i v i t y

Dielectric costant - The relation between the chargeby a condenser with dielectric material and va c u u m

D. C . - Direct current

Dielectric losses - Power losses due to theconductance of dielectric materi a l s

Dielectric strenght - M a x i mum voltage gradient that am a t e rial withstand

Embossing code - Raised cable code on theo u t e r s h e a t h

Electrical resistance - The resistance of the materi a l sto the flow of current (Ohm/km)

Electrical metal screen - A metal shield againstex t e rnal fields, need to equalize electric fields

E l e c t ro m agnetic compatibility - The capability ofd i f ferent electrical system to coexist withouti n t e r fe r e n c e s

Electrical gradient - The sheare of dieletrical strenghtexpress in kV/mm

Filler - Mass of material to fill layng cores interstices inorder to provide an appro ximate round shape cabl e,through ex t rusion or by different elementsa s s e m bled together cores

F r e q u e n cy - The number of cycles (hertz) of ana l t e rnating current in one second

HEPR - High ethylene propylene ru bb e r

IEC - I n t e rnational Electrotechnical Committee

Insulation - D i e l e c t ric laye r

Insulation screen - An ex t rusion layer direct on thec a ble insulation of a semi-conducting material whichu n i fo rm radial stress distri bution across insulation

J a cket - The outer protective cove ring of a cabl e

Joints - A c c e s s o ry suitable to joint two cabl e s

L aying depht - Installation depht trench

Lug - A c c e s s o ry suitable to connect a cable conductorto the netwo rk

Metallic armour - Additional mechanical cabl eprotection usually covered by a plastic laye r

M1 - LS0H low smoke and zero halogen

MT - Medium tension

MV - Medium vo l t a g e

NF - N o rme Française (F)

Phase lay-out - System to provide a corretc currents p l i t t i n g

PE - Po l ye t y l e n e

Plain conductor - Mean a conductor of only onem e t a l

Print code - Ink print cable code in the outersheath

PVC - Po l y v i nyl chlori d e

Reactance - The opposition to the flow of altern a t i n gcurrent by inductance or capacitance

Resistivity - A conductor electric resistance

Semiconductor - A material with lower electri c a lresistance than a dielectric materi a l

Sheath - The outer protective cove ring of a cabl e

S h o rt circuit current - B r e a k d own due tempera t u r eri s e

Single core - One phase cabl e

System - N e t wo rk

Terminations - A c c e s s o ry suitable to connect a cabl eto the netwo rk

Tr e foil - L ay-out of three sigle cabl e

Three cores - Three phases cabl e s

Uo kV - Nominal tension between any insulatedconductor to eart h

U kV - Nominal tension between two insulatedconductor of the cabl e

Um kV - M a x i mum tensione which the cable iss u i t a bl e

UNE - Unificación de Normas Españolas (E)

VDE - Verband der Elektrotechnik (D)

Vo l t age drop - Rduced voltage in the circuit

XLPE - C r o s s - l i n ked polye t hy l e n e


Tratos Cavi S.p.A. reserves the right to modify at any time technical dimensional and

weight characteristics shown in this catalogue to improve the features of its products.

However these will still be in accordance to the mentioned standards.

There is no responsibility of the manufacturer for damages to persons and property

in case of improper use and/or neglecting the recommendations for using cables

and norms contained in this catalogue.

Kama May 2009


ALMA S.r.l.Via Stadio, 252036 Pieve S. Stefano - ItalyTel. +39 0575 7941Fax +39 0575 798026

TRATOS CAVI S.p.a.Via Stadio, 252036 Pieve S. Stefano - ItalyTel. +39 0575 7941Fax +39 0575 [email protected]

TRATOS CAVI S.p.a. filiale CataniaXIII Str. Strad. V.LanciaLoc. Piano D’Arci95121 Catania - ItalyTel. +39 095 7482101Fax +39 095 291059

TRATOS H.V. S.p.a.Via Pian di Guido, 4552036 Pieve S. Stefano - ItalyTel. +39 0575 799429Fax +39 0575 796907

TRATOS LtdUK - Park RoadHolmewood Industrial ParkHolmewood - ChesterfieldDERBYSHIRE S42 5UWTel. +44 01246 858000Fax +44 01246 858001

NORTH WEST CABLES LtdSchool lane, KnowsleyMerseyside L34 9HDTel. +44 01515 483888fax +44 0151 549 1169

TRATOS CAVI Iberica S.L.SpainPaseo de los Parques 6, bloque 6, 1D28109 Alcobendas (Madrid)Tel./ Fax +34 91 6255887

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C-2 Cross Linked - SA Industrial Solutions

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