catalogue - abb ltd · outside dimension of ct's ... kola 06 j2 50 1 10p10 0.5 300 x 497 410 x...

CABLE CURRENT TRANSFORMERS types: KOLMA, KOLA, KOKM, KORI, KOKU, KODI, KOLT

Catalogue

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CONTENT page

1.KOLMA,KOLA........................................................................ 3 Description............................................................................................... 3 Howtoselectthecorrectresidualcurrenttransformers......................... 3 Technicaldata.......................................................................................... 4 Installation................................................................................................ 4 Orderingdata........................................................................................... 6 Overalldimensions.................................................................................. 72.KOKM...................................................................................... 8 Technicaldata.......................................................................................... 8 Orderingdata..........................................................................................10 Installation...............................................................................................10 Overalldimensions.................................................................................12

3.KOKM(forZXpanels)...........................................................17 Technicaldata........................................................................................17 Overalldimensions.................................................................................19

4.KOKM(forRMU)................................................................... 28 Electricalparameters,dimensions,connectiondiagrams.................... 28 Terminalmarking.................................................................................... 29 OutsidedimensionofCT's.................................................................... 31 Connectiondiagram.............................................................................. 31

5.KORI...................................................................................... 33 Technicalparameters............................................................................ 33

6.KOKU..................................................................................... 35 Technicaldata....................................................................................... 36 Orderingdata........................................................................................ 36 Overalldimensions................................................................................ 38

7.KODI...................................................................................... 40 Overalldimensions............................................................................... 40 Measurmentdiagram............................................................................ 41

8.KOLT...................................................................................... 42 Technicaldata........................................................................................ 42 Overalldimensions................................................................................ 44

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CableCurrentTransformers,indoortypes:KOLMA,KOLA

DescriptionTransformers,KOLMA_andKOLA_aresuitableforthemeasurementofthesumofthree-phasecurrentsina3-phasecable.Undernormaloperatingconditionsthissumiszero.Intheeventofanearth-faultthesumofthecurrentsisequaltotheearth-faulcurrentandacorrespondingcurrentflowsinthesecondary.

These transformersareused togetherwithstaticearth-fault relays.Thecablecurrenttransformerscangenerallybeusedwhenmeasuringtheresidualcurrente.g.toprewarnof,orlocateanearth-fault.Anbusbarorcableservesastheprimaryconductor.

HowtoselectthecorrectresidualcurrenttransformersThetransformerforanearth-faultrelayisselectedaccordingtodimensionofthewindow,andconstructionofthetransformer.

FortypesKOLMA06A1,andKOLMA06D1,thenumberofturnsusedinthesecondarywindingisselectedaccordingtotherelaysettingvalue,andtheearth-faultcurrentortherequiredcurrentratio.

InadditioncorrectfunctioningoftheearthfaultprotectionrelaysforKOLMA06A1andKOLMA06D1iseasytotestbymeansofthetestwinding(terminalsP1x-P2x)ofthetransformer.Thetestwindingisratedfor6Amax.continuouscurrent.

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S1 S2

100

P1 P2

S1 S2 S3 S4 S5 P1x P2x

50 20702010

P1 P2

CableTest winding

CableNumberofturnsandterminalmarkings

KOLMA06A1KOLMA06D1

KOLMA06 A2KOLMA06 B2KOLMA06 D2KOLA 06 B2KOLA 06 D2

Cablecurrenttransformers,typesKOLMA

Table1.Selectionofresidualcurrenttransformers

Type Windowdiam.mm Construction Weight

kgKOLMA06A1 90 Ringcore,multi-tapsecondary 7.0KOLMA06A2 58 Ringcore 2.9KOLMA06B2 100 Ringcore 5.4KOLMA06D1 180 Ringcore,multi-tapsecondary 11.5KOLMA06D2 180 Ringcore 11.4KOLA06B2 100 Splitringcore 6.0KOLA06D2 180 Splitringcore 11.0

TechnicaldataTheprimarywindingofindoortypecablecurrenttransformersiseitheracableorabusbar,whichisinsulatedfortheapplicationvoltage.

Thesecondarywindingandringshapedironcoreiscastinresinwhichhasgoodelectricalandmechanicalproperties.

Ratedvoltage 0.72kV(1)

Insulationtestvoltage50Hz1min 3kV(IEC60044-1)

Frequency 50Hz(60Hz)

Ratedthermalcurrent 1.2xIpn

Short-timewithstandcurrentIth1s 60xIpn(2)

PeakwithstnadcurrentIdyn 2.5xIthSecondaryterminals For6mm2conductor

Operatingtemperaturerange –5...+40°C

(1)Theinsulationleveloftheprimaryconductordeterminesthemaximumoperatingvoltage.(2)KOLA06B2istypetestedfor10kA3s.

InstallationThe KOLMA-types must be installed before the cables and cable terminations areconnected.

WiththeKOLA06B2andKOLA06D2-types,theringcorecanbeopenedandthusthetransformercanbeinstalledeventhoughthecableisalreadyconnected.Thetwohalvesoftheringcorearetightenedtogetherwithfourscrewswhichalsoguidethehalvestothecorrectposition.Thesecondarywindingisdistributedoverbothhalvesofthecore.Thetwosectionsofthewindingareconnectedtogetherwithtwoconnectingpieces.

Cablecurrenttransformersarefastenedeitherbymeansofthefixingbaseorbythenutscastintothetransformerframe.Wheninstallingthetransformer,theeffectofthecurrentinthemetalarmourorintheprotectiveconductormustbeeliminated.Incasethemetalarmourortheprotectiveconductorisdrawnthroughthetransformer,theearthingcon-ductormustbedrawnbackthroughthetransformerforearthing.Theearthingconductorbetween the cable termination box and the transformer, must not be connected toconductivestructures,andthemetalcableterminationboxmustbeinsulatedfromthesupportingstructures.

Onamulti-ratiotransformertheunconnectedsecondarywindingterminalsandtestwind-ingmustnotbeshortcircuited.

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Table3.Standardtechnicalparameters

TypePrimarycurrent

[A]

Secondarycurrent

[A]

Accuracyclass

[A]

Burden

[VA]

Dimensions

inner outer height

mm mm mmKOLMA06A2 100 1 10P10 2 58 140 65KOLMA06B2 100 1 10P10 2 100 196 65KOLMA06D2 100 1 10P10 2 180 270 80KOLA06B2 50 1 10P10 0.5 100 228 85KOLA06B2 100 1 10P10 2 100 228 85KOLA06B2 200 1 10P10 4 100 228 85KOLA06B2 200 5 10P10 4 100 228 85KOLA06B2 400 5 5P10 5 100 228 85KOLA06B2 500 5 5P20 2.5 100 228 85KOLA06B2 600 1 10P10 2 100 228 85KOLA06B2 1250 1 5P20 5 100 228 85KOLA06B2 1500 1 5P10 2.5 100 228 85KOLA06B2 1600 5 1 20 100 228 85KOLA06D2 50 1 10P10 0.5 180 315 85KOLA06D2 100 1 10P10 2 180 315 85KOLA06D2 150 1 10P10 2 180 315 85KOLA06D2 200 1 10P10 5 180 315 85KOLA06D2 200 5 10P10 2 180 315 85KOLA06D2 300 1 10P10 5 180 315 85KOLA06D2 400 1 10P10 5 180 315 85KOLA06D2 400 5 5P10 5 180 315 85KOLA06D2 1000 1 5P10 10 180 315 85KOLA06D2 1800 5 1 20 180 315 85KOLA06J2 50 1 10P10 0.5 300x497 410x610 90KOLA06J2 100 1 10P10 1 300x497 410x610 90KOLA06J2 1250 1 5P20 5 300x497 410x610 90KOLA06J2 1250 5 10P10 1 300x497 410x610 90

Note:Ifyouneedotherelectricalparametersthangivenintablespleasecontactwithoursalesforces.

Table2.Currentratiosandratedburdensforaccuracyclass10P10

CurrentratioA Secondaryterminals

Burden/VAType

KOLMA06A1 KOLMA06D1

50/170/1100/1

S4-S5S3-S4S1-S4

1.02.02.5

0.51.02.0

150/150/5100/5

S1-S5S1-S2S2-S3

5.01.02.5

4.00.51.5

150/5250/5350/5

S1-S3S4-S5S3-S4

4.07.5

10.0

3.05.07.5

500/5600/5750/5

S1-S4S3-S5S1-S5

152020

101515 Openableresidualcurrenttransformers,type(KOLA

06B2)completewithfixingbaseKOLMA-ZK1andterminalcoverKOK-ZAX14.

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Table4.SelectionofaccessoriesforKOLMA_iKOLA_

Descriptionofaccessory TypeSuitableforusetogetherwithtransformer

Fixingbase KOLMA-ZK1 KOLMA06A1Fixingbase KOLMA-ZK1 KOLMA06A2Fixingbase KOLMA-ZK1 KOLMA06B2Fixingbase KOLMA-ZK1 KOLA06B2Fixingbase KOLMA-ZK2 KOLMA06D1Fixingbase KOLMA-ZK2 KOLMA06D2Fixingbase KOLMA-ZK2 KOLA06D2

Secondaryterminalcover KOK-ZAX14 KOLMA06A2Secondaryterminalcover KOK-ZAX14 KOLMA06B2Secondaryterminalcover KOK-ZAX14 KOLA06B2Secondaryterminalcover KOK-ZAX14 KOLA06D2

WarrantyThefactorygrants24monthsofwarrantyfromthedayofputtouseofthetransformer,butnolongerthan36monthsfromthedayofsell.Thewarrantyconcernsonlymanufacturingdefectsanddoesnotincludedefectsarosebecauseof:

– impropertransport,– improperstorage,– notabidingoftheinstructionbeforeinstallingandduringoperating ofthetransformers,– improperselectionofthetransformerfortheelectricpowersystem.

OrderingdataTheordershouldcontainfollowingdata:

-typeofcurrenttransformer-ratedprimarycurrent/ratedsecondarycurrent[A/A] -ratedburdenandaccuracyclassforeachwinding[VA]-short-timethermalcurrentIth-standard-quantity

OrderexampleKOLA06B2;100/1A/A;2VA;10P10;Ith=60xIpn/1s;IEC60044-1;12pcs

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KOLMA06D1,D2

1518

17

2325

80KOLMA-ZL2,3

KOLMA-ZK2

270190150130 145

115

140

335180

P1

KOK-ZAX 14M5

M5 P1

7

52

100

KOLMA-ZK1

109

110

219 238

18

M8

14

85

228

2036

P1

a b

ba

1 2

KOK-ZAX 147

180

KOLMA-ZK 2

M5

M5

153

293

16

140

315

3

M1018150

13011

20

31536

20 85 115 145

KOLA06B2 KOLA06D2

KOLMA06A1 KOLMA06A2,B2

Overalldimensions

P1

90

14

245

113

238

186

9618

KOLMA-ZK1

52M 8

3978

KOLMA-ZL 2,3

M5

14M8

52

A B

KOK-ZAX 14

12,5

C

18KOLMA-ZK165

175145

78D

S1

P1 P2

S2

P1

P2

a1 a2 b2 b1

90

113M6

497 0+3

570610

R40

R14

20

300

370

410

20

462

75

40

16

17

6a1ø15 a2

b2 b1

a2 a1 6222,5

øS1S2

M5619

KOLA06J2_

KOK-ZAX 14M5

M5 P1

7

52

100

KOLMA-ZK1

109

110

219 238

18

M8

14

85

228

2036

P1

a b

ba

1 2

KOK-ZAX 147

180

KOLMA-ZK 2

M5

M5

153

293

16

140

315

3

M1018150

13011

20

31536

20 85 115 145

Type Dims.[mm]

A B C DKOLMA06A2 58 177 196 140KOLMA06B2 100 229 249 196

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CableCurrentTransformers,indoortypeKOKM

KOKM-currenttransformersaresuitableformeasuringofphasecurrents.Anbusbarorcableservesastheprimaryconductor.SeriesKOKMcurrenttransformerscanalsobeusedformeasuringthephasecurrentatvoltagesevenhigherthan0,72kV(forKOKM06)or1,2kV(forKOKM1),iftheinsulationoftheprimaryconductorfulfilstherespectivestandardsfortheoperatingvoltage.Thesecondarywindingandringshapedironcoreiscastinresinwhichhasgoodelectricalandmechanicalproperties.

Table5.Technicaldata

Transformertype KOKM06 KOKM1

Ratedvoltage Um [kV] 0.72(1) 1.2(1)

Powerfrequencytestvoltage Up(1min) [kV] 3 6

Lightingtestvoltage Upp [kV] - -

Frequency fn [Hz] 50lub60

Max.primarycurrent Ipn [A] 50÷2000 50÷10000

Ratedsecondarycurrent Isn [A] 1lub5

Ratedthermalcurrent Icont [A] 1,2xIpn(2)

Short-timewithstandcurrent Ith(1sek) [kA] 60xIpn(3)

Peakwithstandcurrent Idyn [kA] 2,5xIth(4)

Secondaryterminals For6mm2conductor

Operatingtemperaturerange [°C] -25…+40

Transportandstorage [°C] -40…+55

Electricalstandards IEC,VDE,ANSI,BS,AS,CAN(1) Theinsulationleveloftheprimaryconductordeterminesthemaximumoperatingvoltage.(2) Max.IcontforKOKM06Icont=2400A,forKOKM1Icont=10000A(3) Max.Ith=100kA,(4) Max.Idyn=250kA

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Table6.Technicalparametersofcablecurrenttransformers

Type

CurrentAccuracy

class

BurdenDimensions

primary secondary inner outer height

A A VA mm mm mmKOKM1BC10 200 5 5P20 5 42 148 100KOKM1DC8 100 1 10P10 2 60 148 80KOKM1DF12 100 5 0.5 3 60 186 120KOKM1DC6 150 1 5P20 1 60 148 60KOKM1DC14 150 5 5P10 10 60 148 140KOKM1DC12 300 5 5P10 15 60 148 120KOKM1DC16 400 5 5P20 10 60 148 160KOKM1DH10 5000 5 1 10 60 200 100KOKM1EC8 100 1 5P20 1 70 148 80KOKM1EF16 100 1 0.5 1 70 186 160KOKM1EC8 150 1 5P20 1 70 148 80KOKM1EC6 200 1 5P20 1 70 148 60KOKM1EC16 250 1 5P10 20 70 148 160KOKM1EH16 250 1 5P20 20 70 200 160KOKM1EC10 400 1 5P10 10 70 148 100KOKM1EF14 400 1 5P20 20 70 186 140KOKM1FC6 50 5 10P10 0.5 85 148 60KOKM1FC16 300 5 5P10 10 85 148 160KOKM1FC8 600 5 0.5 15 85 148 80KOKM1FC12 600 5 0.5 50 85 148 120KOKM1FC8 1000 5 0.5 50 85 148 80KOKM1GF6 50 5 10P10 0.5 90 186 60KOKM1GF8 1000 5 0.5 50 90 186 80KOKM1GF6 1500 5 0.5 50 90 186 60KOKM1HF8 50 1 10P10 1 100 186 80KOKM1HF8 50 5 10P10 1 100 186 80KOKM1HH16 50 5 10P10 5 100 200 160KOKM1HF12 100 1 10P20 2 100 186 120KOKM1HK10 150 1 5P10 10 100 250 100KOKM1HK10 200 1 5P10 10 100 250 100KOKM1HK10 250 5 5P20 10 100 250 100KOKM1HK10 300 5 5P20 10 100 250 100KOKM1HK14 400 1 5P20 30 100 250 140KOKM1HF6 400 5 10P10 5 100 186 60KOKM1HF6 500 1 1 15 100 186 60KOKM1HJ8 2000 1 5P20 30 100 235 80KOKM1KH8 50 1 10P10 1 120 200 80KOKM1KH8 50 5 10P10 1 120 200 80KOKM1KH18 200 5 5P20 5 120 200 180KOKM1KH18 300 5 5P20 10 120 200 180KOKM1KH10 1000 1 5P10 20 120 200 100KOKM1KH8 1000 5 5P20 10 120 200 80KOKM1KH8 1500 5 0.5 50 120 200 80KOKM1KH8 2000 5 0.5 50 120 200 80KOKM1KK10 2500 5 5P20 10 120 250 100KOKM1NK8 50 1 10P10 1 155 250 80KOKM1NK12 50 1 10P10 2 155 250 120KOKM1NK20 50 1 10P10 5 155 250 200KOKM1NL14 50 1 10P10 5 155 270 140KOKM1NL8 3000 1 5P20 5 155 270 80KOKM1RL12 50 1 10P10 2 180 270 120KOKM1RL8 100 1 5P10 1 180 270 80KOKM1RL12 100 1 5P10 5 180 270 120KOKM1RL8 150 1 10P10 2 180 270 80KOKM1RL20 300 5 5P20 10 180 270 200KOKM1UT10 50 1 10P10 5 250 450 100KOKM1UP16 100 5 10P10 5 250 340 160

Tablepresentschosentechnicalparametersforcablecurrenttransformers.Incaseofdifferenttypes(dimensions)parameterscanbedifferent(generallythebiggerCTthehighertechnicalparameters).Ifyourequierotherparametersthangivenintablepleasecontactoursalesforces.

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P2S2S1

P1 P11S1 1S2

P22S22S1

P1S2S1

P2S3

onesecondarywindingexample:100/1[A/A]

multi-tapsecondarywindingexample:50-100/1[A/A]

twosecondarywindingsexample:800/5/5[A/A/A]



OrderexampleKOKM1FC8;600/5A/A;10VA;0.5;Ith=60xIpn/1s;IEC60044-1;9pcs

Terminalmarkings

KOKM1FC6

KOKM1RL8

Instructionsforinstallation

MountingofthecablecurrenttransformersThecablecurrenttransformermaybeinstalledeitherinverticalorinhorizontalposition.Itcanbemountedeitherbyusingbottominsertsorbyusingaseparatefixingbase,whichinturnsisfixedtothebottominserts.Whenusingthebottominsertsformounting,thescrews(M8)shallnotbetightenedinexcessofthenominaltorque;9Nm,forthescrews(M6)3.3Nm,otherwisedamagemayoccur.Useatorquespannerifnecessary.Thecurrenttransformercanbefastenedtothecablewhichactsasprimaryconductorbymeansofaspecialfixingpiece.Insuchcasesitmustbeinsuredthatthecableenduresthestraincausedbytheweightofthetransformer,especiallyincircumstanceswherevibrationisinvolved.Thesecondaryterminalscrews,sizeM5,mustnotbetightenedinexcessof2.5Nm(M41.0Nm).

FasteningoftheprimarycableThecableactingasprimarywindingshallbeenteredthroughtheopeninginthecablecurrenttransformer.Thismustbedonebeforethecableboxbelongingtothecableinsertedthroughtheprimaryopeningisinstalled.Ifthecableboxcanbeenteredthroughtheprimaryopeningevenwhenitisinstalledonthecable,theinstallationofthecableboxcanalsobedonebefore.WiththeKOLA06J2,thecablecurrenttransformercanbeopenedandthusthetransformercanbeinstalledeventhoughthecableisalreadyconnected.Thetwohalvesoftheringcorearetightenedtogetherwithfourscrewswhichalsoguidethehalvestothecorrectposition.Thesecondarywindingisdistributedoverbothhalvesofthecore.Thetwosectionofthewindingareconnectedtogetherwithtwoconnectingpieces.

NoteThesecondaryterminalsofthecurrenttransformershouldneverbeleftopen-circuited,becauseinthatcasehazardoushighvoltageswillbeinducedbetweenthesecondaryterminals.

InstructionsformaintenanceCablecurrenttransformersdonotneedtobemaintained.However,excessivedustorotherkindofdirtcanbebrushedoffthetransformer.Dirtytransformerscanbecleanedwithwater,spirit,petrolortoluene.Tracesofarcsandminorsurfacedamagescanbeeasilyremovedwithsandpaperafterwhichthesurfaceistobetreatedwithsiliconepaste.Epoxyresinsurfacesofthecurrenttransformerhavealsoahighresistancetochemicals.Thetransformerscanbeusedinareas,wheretheatmosphereincludescorrosivegasessuchassulphuricandnitrogenouscompoundsprovidedthatsecondaryterminalsandfixingbaseofthetransformershavebeenorderedtomeetthedemandsoftheoperatingatmosphere.Instructionsforrepairinggreatersurfacedamages(suchascracks)mustberequestedfromthemanufacturer.

11ABB

Example KOKM1DC10Transformerswidth 10=100mm(possibility-6,8,10,12,14,16,18,20,22,24,...30)Outerdiameter C=148mmHolediameter D=60mmRatevoltage 1=1,2kVType KOKM-indooruse,(KOKU-outdooruse)

Outerdiameter

[mm]

Holediameter[mm]D

raw

ing

Cas

ting

heig

ht

[mm

]

Tota

lhei

ght

[mm

]

Hol

ece

nter

he

ight

[m

m]

A B D E F G H K N R S U W X Y Z

33 42 60 70 85 90 100 120 155 180 200 250 350 400 450 500

C 148 60160

60160

60160

60160

60160 KOKM1_C_ 183 249 112

F 186 60160

60160

60160

60160

60160

60160

60160 Rangeoftransformerswidth KOKM1_F_ 213 279 131

H 200 80180

80180

80180

80180

80180

80180

80180

80180 KOKM1_H_ 235 301 138

J 235 80300

80300

80300

80300

80300

80300

80300

80300 KOKM1_J_ 265 331 158

K 250 80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKM1_K_ 275 341 158

L 270 80200

80200

80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKM1_L_ 297 363 158

M 280 80240

80240

80240

80240

80240

80240

80240

80240

80240

80240

80240 KOKM1_M_ 297 363 158

P 340 80200

80200

80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKM1_P_ 379 445 204

T 450 80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKM1_T_ 465 513 225

W 590 80200

80200

80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKM1_W_ 605 653 300

Table7.KOKM1

StorageinstructionsForcurrenttransformers,theallowedstoragetemperatureis-40°C…+55°C.Thetransformersshallbeprotectedagainstdirectsunlight.

Package,TransportandStorageTransformersassigned forexportarepacked inwoodencases linedwith theasphaltbuildingpaper.Duringthetransportoftransformersoneshouldpayattentiontoproperpositionofwoodencasesinaccordancewithinscriptionandmarksgivenonthemandtheirprotectionagainsttheinfluenceofweatherconditions.Transformershouldbestoredindryandcleanaccommodations,protectingdirectinfluenceofprecipitationandfrost.


– impropertransport,– improperstorage,– notabidingoftheinstructionbeforeinstallingandduringoperatingofthetransformers,– improperselectionofthetransformerfortheelectricpowersystem.

Procedureregardingtheproductsaftertheendoftheiruse.Themanufacturergetsbackorindicatesthestoreplaceforinstrumenttransformersofitsownproduction,whichtheperiodofuseisfinished,inordertotheirrecycling.

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OveralldimensionsKOKM1_C_ KOKM1_F_

KOKM1_H_ KOKM1_J_

N

±2

S1 S2

P2P1

+20±2

±3±2

±2

6

40

KOKM 1 _ C __

M8

M5

P1

Di = 33 42 60 70 85A B D E F

6 8 10 12 14 16B = 60 80 100 120 140 160C = 80 100 120

1) KOKM 1_C6 without the coverNote:

M61

16

1775

23

112

148

Di

14

183

18

236

113

1140

52124

C20

B

(1 2

0...1

60)

B

(60

...10

0)

±2

±2

P1

S1 S2

P2

P1

+30

M5

P1

M61

75

40

6

23

16

17

131

170

14

18

186

Di

213

±2

266

±3

113

140

52

1140

B

(60 .

..80)

C

B

(100

0...1

60)

± 2

2 0

KOKM 1 _ F __Di = 33 42 60 70 85 90 100

A B D E F G H

6 8 10 12 14 16

B = 60 80 100 120 140 160C = 60 80 100 120

M8

1) KOKM 1_F6 without the coverNote:

P1

S1

P1 P2

S2M8

M6

M5

Di = 33 42 60 70 85 90 100 120A B D E F G H K

8 10 12 14 16 18

B = 80 100 120 140 160 180C = 60 80 100 120 140

±2

+30

16

75

17

6

40

138200

170

14

18

Di

235±

2

288

±3

113

52

140

1140

B

(80 )

±2

C

B

(100

...18

0)±2

KOKM 1 _ H _

1�ABB

KOKM1_L_

P1

P1

S1

P2

S2

158

M5M6

M8

Di = 33 42 60 70 85 90 100 120 155 180 200A B D E F G H K N R S

8 10 12 14 16 18 20

B = 80 100 120 140 160 180 200C = 40 60 80 100 120 140 160

±2

+30

0-2

74

16

17

23

40

6

270

270

Di

15

1829

7±235

0±3

113

150

246

20CB

±2

1440

KOKM 1 _ L _

KOKM1_K_

150

246

1440

20CB

±2

P1

P1

S1

P2

S2

M5M6

M8

Di = 33 42 60 70 85 90 100 120 155A B D E F G H K N

8 10 12 14 16 18 20B = 80 100 120 140 160 180 200C = 40 60 80 100 120 140 160

±2

0-2

+30

16

75

6

40

17

23

158

270

Di

250

15

1827

5±2

328±

3

113

KOKM 1 _ K _

KOKM1_M_ KOKM1_P_

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KOKM1_W_

KOKM06J

KOKM1W

Table8.KOKM06StandardsparametersforKOKM06J_(windowtype)f=50Hz

Type Window[mm]

Primarycurrent[A]

Secondarycurrent

[A]

Accuracyclass

Burden[VA]

KOKM06J2 300x500 50 1 10P10 1KOKM06J2 300x500 50 5 10P10 0.5KOKM06J2 300x500 100 1 10P10 2KOKM06J2 300x500 100 5 10P10 1KOKM06J2 300x500 150 1 10P10 2KOKM06J2 300x500 300 5 10P10 1KOKM06J2 300x500 500 1 5P10 10KOKM06J2 300x500 600 5 10P10 5KOKM06J2 300x500 800 5 0.5 15

KOKM06J21 150x500 50 1 10P10 1KOKM06J21 150x500 100 5 10P10 1KOKM06J21 150x500 700 1 5P10 3KOKM06J21 150x500 2000 1 1 5KOKM06J22 300x200 50 1 10P10 1KOKM06J22 300x200 100 1 10P10 2KOKM06J22 300x200 300 1 5P10 3KOKM06J22 300x200 1200 5 5P10 30KOKM06J22 300x200 2000 5 5P10 50KOKM06J23 600x200 50 1 10P10 1KOKM06J23 600x200 50 5 10P10 0.5KOKM06J23 600x200 100 1 10P10 3KOKM06J23 600x200 200 1 10P10 2KOKM06J24 300x200 50 1 10P10 1KOKM06J24 300x250 150 1 10P10 2KOKM06J29 450x650 50 1 10P10 1KOKM06J29 450x650 50 5 10P10 0.5KOKM06J29 450x650 100 1 10P10 2KOKM06J29 450x650 400 1 5P10 7.5

Note:Ifyouneedotherelectricalparametersthangivenintablespleasecontactwithoursalesforces.

Note:Withoutfixingbase.Fixdirectlytofloor.

Note:Withoutfixingbase.Fixdirectlytofloor.

KOKM1_T_

1�ABB

500 0+3

573

613

R40

R14

20

300

3704 10

20

462

80

113

M5M6

15

75

40

23

16

17

6

S1P1 P2

S2

S2S1P1 P2

M5M6113

80R14

R40

150

220

260

20

500+3 0

573

613

665

15

20

75

40

23

16

17

6

KOKM06J2 KOKM06J21_

S1P1 P2

S2

80

113

M5M6

15

200

270

310

R40

R14

20

300

370

410

20

462

75

40

23

16

17

6

KOKM06J22

S1P1 P2

S2

M5M6

80

200

270

310

R14

R40

600

0+3

673

713

20

20

765

113

15

75

40

23

16

17

6

KOKM06J23

Overalldimensions

1� ABB

KOKM06J24 KOKM06J29_

S1P1 P2

S2

80

113

M5M6

15

250

320

360

R40

R14

20

300

370

410

20

462

75

40

23

16

17

6

S1P1 P2

S2

80

113M5M6

∅15

650720760

R40

R14

20

450

520

560

20

612

0+3

17

16

23

40

6

75

1�ABB

KOKM1EBandKOKM1ED–istheindoor,cable,lowvoltagecurrenttransformerinresininsulation.TransformersofKOKMtypearesuitableformeasurementofphasecur-rents.Astheprimaryconductorisusedthebusbarorthe.CurrenttransformersofKOKMseriescanbealsousedformeasurementofthephasecurrentatvoltagesevenhigherthen1,2kV,iftheinsulationofthehighvoltageprimaryconductorfulfilstheequirementsofelevantstandardsrelatingtotheworkingvoltage.

CableCurrentTransformers,indoortypeKOKM(forGIStypeZX)

TechnicaldataType............................................................................................ KOKM1EB,KOKM1EDMaximumnumberofwindings......................................................................................... 3Levelofinsulation....................................................................................................... 1/6/-HighestpermissiblevoltageofthecurrenttransformerUr......................................1,2kVRatingtestvoltageofinsulation(50Hz,1minUp)......................................................6kVRatingfrequency........................................................................................... 50Hz,60HzRatingthermalcurrent............................................................................................1,2xIpnShort-timewithstandthermalcurrentIth,1s............................................................60xIpnRatingpeakcurrentIdyn.......................................................................................... 2,5xIthWorkingtemperaturerange............................................................................... -5...+40°CConformitywithstandards-IEC,ANSI,PN-EN,CAN



OrderexampleKOKM06NN;12150/1A/A,Ith=60xIpn,1VA10P10-3pieces

1� ABB

Table9.ForselectingcurrenttransformersKOKM1EB

PrimaryCurrentIpn[A]

Maximumpermissibleload[VA]

SecondarycurrentIsn=1[A] SecondarycurrentIsn=5[A]

MeasurementclassFS

ProtectionclassFa

MeasurementclassFs

ProtectionclassFa

0,5 1 10P10 5P10 5P20 0,5 1 10P10 5P10 5P2050 – – 0,5 0,5 0,5 – – 0,5 – –60 – – 0,5 0,5 0,5 – – 0,5 0,5 –70 – 0,5 1 1 0,5 – 0,5 0,5 0,5 –75 – 1 1 1 0,5 – 1 1 1 –100 – 2,5 1,5 1,5 0,5 – 1,5 1 1 –110 0,5 4 1,5 1,5 0,5 – 2,5 1 1 –120 1 4,5 1,5 1,5 0,5 0,5 3 1,5 1,5 –140 1 4,5 1,5 1,5 0,5 1,5 7 2 2 0,5150 1,5 6 2 2 0,5 1,5 7 2 2 0,5200 5,5 8,5 2,5 2,5 0,5 2,5 12 2,5 2,5 1240 5,5 20 2,5 2,5 0,5 8 25 3,5 3,5 1250 4,5 25 3 3 0,5 11 28 3,5 3,5 1300 12 40 3 3 0,5 15 40 4,5 4,5 1,5350 9 27 5 5 1 22 45 5 5 1,5400 22 40 4,5 4,5 1,5 30 60 6 6 2500 35 50 6 6 2 45 60 6 6 1,5600 60 60 6 6 1 60 60 5,5 5,5 –630 60 60 5 5 0,5 60 60 6 6 –800 60 60 5 5 – 60 60 7 7 –1000 60 60 6 6 – 60 60 – – –

Atspecialrequestcanbedeliveredalsocurrenttransformerswithvaluesofsecondarycurrentdifferentthesegiveninthetableabove(e.g.2aor4,3A)andcurrenttransformersforfrequency60Hz.

1�ABB

KOKM1EBversion03

ok. 5

0 00

8

74

32

90

70

170

72

max

6

M6

100

128

130

9050

3S

2S

1S

0,5°

A

B

74

60

32

170

70

M6

100

128

58

40

40 12

M3M5

24,5

1914,5

A

B

72

rating plate

KOKM1EBversion0177

56

5680

205

72

0,5°

70

70

128

100M6

M61=S1

2=S2

~5m

KOKM1EBversion02

Overalldimensions

TypeDims.[mm]

A BKOKM1E...8 56 80KOKM1E...10 76 100KOKM1E...12 96 120KOKM1E...14 116 140KOKM1E...16 136 160KOKM1E...18 156 180

74

8

32

ok 5

000

max

6

70

72

170

0,5°

90

120

148

M6

A

B

130

9050

KOKM1ED

TypeDims.[mm]

A BKOKM1E...8 56 80KOKM1E...10 76 100KOKM1E...12 96 120

�0 ABB

Table10.ForselectingcurrenttransformatersKOKM06NN


Maximumpermissibleload[VA]SecondarycurrentIsn=1[A] SecondarycurrentIsn=5[A]

MeasurementclassFS

ProtectionclassFa

MeasurementclassFs

ProtectionclassFa

0,5 1 10P10 10P20 5P10 5P20 0,5 1 10P10 10P20 5P10 5P2050 – – 3,5 1,5 – – – – 3 1 – –60 – – 4 2 – – – – 3,5 1,5 – –70 – – 5 2,5 – – – – 4,5 1,5 – –75 – – 5,5 2,5 – – – – 5 2 – –100 – – 7 3,5 7 1 – – 6 2,5 6 1110 – – 7,5 4 7,5 1,5 – – 7 3 7 1,5120 – – 8 4 8 4 – – 7 2,5 7 2,5140 – – 10 5 10 5 – – 9 3,5 9 3,5150 – – 10 5 10 5 – – 9 4 9 4200 – 8 14 7 14 7 – 9 13 5,5 13 5,5240 – 15 17 8,5 17 8,5 – 16 15 6,5 15 6,5250 – 19 18 9 18 9 – 19 16 7 16 7300 – 31 21 10 21 10 – 31 20 8 20 8350 0,5 50 25 12 25 12 – 50 22 10 22 10400 15 60 28 13 28 13 15 55 25 11 25 11500 35 90 34 16 34 16 35 60 31 14 31 14600 60 90 41 17 41 17 60 90 38 15 38 15630 60 90 42 18 42 18 60 90 39 16 39 16800 90 90 52 23 52 23 90 90 49 21 49 211000 90 90 66 28 66 28 90 90 63 26 63 261200 90 90 80 34 80 34 90 90 77 32 77 321250 90 90 82 35 82 35 90 90 79 33 79 331500 90 90 90 40 90 40 90 90 90 40 90 40


KOKM06NN12

KOKM06NN–istheindoor,cable,lowvoltagecurrenttransformerinresininsulation.TransformersofKOKMtypearesuitableformeasurementofphasecurrents.Astheprimaryconductorisusedthenon-insulatedbusbarorthecable.CurrenttransformersofKOKMseriescanbealsousedformeasurementofthephasecurrentatvoltagesevenhigherthen0,72kV,iftheinsulationofthehighvoltageprimaryconductorfulfilstheequirementsofelevantstandardselatingtotheworkingvoltage.

TechnicaldataType.............................................................................................................. KOKM06NNMaximumnumberofwindings......................................................................................... 1Levelofinsulation.................................................................................................... 0,6/3/-HighestpermissiblevoltageofthecurrenttransformerUr....................................0,72kVRatingtestvoltageofinsulation(50Hz,1minUp)......................................................3kVRatingfrequency.......................................................................................................50HzRatingthermalcurrent............................................................................................1,2xIpnShort-timewithstandthermalcurrentIth,1s............................................................60xIpnRatingpeakcurrentIdyn......................................................................................... 2,5xIthWorkingtemperaturerange............................................................................... -5...+40°CConformitywithstandards-IEC,ANSI,PN-EN,CAN

�1ABB

A

95.569

26.5M5

60

13

22

10

420

310

15

152 x Messingrohr 12x1,5

55

65

235

30

∅20

.5

KOKM06NN

TypeDims.[mm]

AKOKM06NN6 60KOKM06NN9 90KOKM06NN12 120

Overalldimensions

�� ABB

Table11.ForselectingcurrenttransformatersKOKM06LM


Maximumpermissibleload[VA]

SecondarycurrentIsn=1[A] SecondarycurrentIsn=5[A]Measurementclass

FSProtectionclass

FaMeasurementclass

FsProtectionclass

Fa0,5 1 10P10 10P20 5P10 5P20 0,5 1 10P10 10P20 5P10 5P20

50 – – 3,5 1,5 – – – – 3 1 – –60 – – 3,5 1,5 – – – – 3,5 1,5 – –70 – – 5 2,5 – – – – 4,5 1,5 – –75 – – 5 2,5 5 – – – 5 2 – –100 – – 7 3,5 5 1,5 – – 6 2,5 6 1,5110 – – 8 4 8 3,5 – – 7 3 7 2,5120 – – 8 4 8 4 – – 7 3 7 3140 – – 10 5 10 5 – – 9 3,5 9 3,5150 – – 11 5 11 5 – – 9 4 9 4200 – 11 13 7 13 7 – 11 13 5,5 13 5,5240 – 20 16 8,5 16 8,5 – 20 15 6,5 15 6,5250 – 23 18 9 18 9 – 23 16 7 16 7300 – 35 21 10 21 10 – 35 20 8 20 8350 12 55 25 12 25 12 12 55 22 10 22 10400 20 60 28 13 28 13 20 60 25 11 25 11500 40 90 34 16 34 16 40 90 31 14 31 14600 60 90 41 17 47 17 60 90 38 15 38 15630 60 90 42 18 42 18 60 90 39 16 39 16800 90 90 52 23 52 23 90 90 49 21 49 211000 90 90 66 28 66 28 90 90 63 23 63 231200 90 90 80 34 80 34 90 90 77 32 77 321250 90 90 82 35 82 35 90 90 79 33 79 331500 90 90 90 40 90 40 90 90 90 40 90 40


KOKM06LM

KOKM06LM–istheindoor,cable,lowvoltagecurrenttransformerinresininsulation.TransformersofKOKMtypearesuitablefomeasurementofphasecurrents.Astheprimaryconductorisusedthebusbarorthecable.CurrenttransformersofKOKMseriescanbealsousedformeasurementofthephasecurrentatvoltagesevenhigherthen0,72kV,iftheinsulationofthehighvoltageprimaryconductorfulfilstheequirementsofelevantstandardsrelatingtotheworkingvoltage.

TechnicaldataType.............................................................................................................. KOKM06LMMaximumnumberofwindings......................................................................................... 1Levelofinsulation.................................................................................................... 0,6/3/-HighestpermissiblevoltageofthecurrenttransformerUr....................................0,72kVRatingtestvoltageofinsulation(50Hz,1minUp)......................................................3kVRatingfrequency.......................................................................................................50HzRatingthermalcurrent............................................................................................1,2xIpnShort-timewithstandthermalcurrentIth,1s............................................................60xIpnRatingpeakcurrentIdyn......................................................................................... 2,5xIthWorkingtemperaturerange............................................................................... -5...+40°CConformitywithstandards-IEC,ANSI,PN-EN,CAN

��ABB

A M5

95.5

69

26.5

17

22

400

280

130

55

65

30

210

15

15

2 x Messingrohr 12x1,5

∅20

.5

KOKM06LM

TypeDims.[mm]

AKOKM06LM6 60KOKM06LM9 90KOKM06LM12 120

Overalldimensions

�� ABB

KOKM...LH–istheindoor,cable,lowvoltagecurrenttransformerinresininsulation.TransformersofKOKMtypearesuitableformeasurementofphasecurrents.Astheprimaryconductorisusedthebusbarorthelowvoltagecable.CurrenttransfomersofKOKMseriescanbealsousedformeasurementofthephasecurrentatvoltagesevenhigherthen1,2kV,iftheinsulationofthehighvoltageprimaryconductorfulfilstheequirementsofelevantstandardsrelatingtotheworkingvoltage.

TechnicaldataType................................................................................................................KOKM...LHMaximumnumberofwindings......................................................................................... 1Levelofinsulation....................................................................................................... 1/6/-HighestpermissiblevoltageofthecurrenttransformerUr......................................1,2kVRatingtestvoltageofinsulation(50Hz,1minUp)......................................................6kVRatingfrequency.......................................................................................................50HzRatingthermalcurrent............................................................................................1,2xIpnShort-timewithstandthermalcurrentIth,1s............................................................60xIpnRatingpeakcurrentIdyn......................................................................................... 2,5xIthWorkingtemperaturerange............................................................................... -5...+40°CConformitywithstandards-IEC,ANSI,PN-EN,CAN

Table12.ForselectingcurrenttransformersKOKM...LH



MeasurementclassFS

ProtectionclassFa

MeasurementclassFS

ProtectionclassFa

0,5 1 10P10 10P20 5P10 5P20 0,5 1 10P10 10P20 5P10 5P2050 – – 2 1 0,5 0,5 – 1,5 1 0,5 0,560 – – 2 1 0,5 0,5 – – 2 1 1 0,570 – – 2,5 1 1,5 1 – – 2,5 1 1,5 175 – – 2,5 1 1,5 1 – – 2,5 1,5 2 1100 – 1,5 3,5 1,5 3,5 1,5 – 1,5 3 1,5 3 1,5110 – 3 4 1,5 4 1,5 – 2,5 3,5 1,5 3,5 1,5120 – 3,5 4 1,5 4 1,5 – 3,5 3,5 1,5 3,5 1,5140 – 6 5 1,5 5 2 – 7,5 4,5 2 4,5 2150 – 8,5 5,5 2 5,5 2 – 8,5 5 2 5 2200 4 20 7,5 2 7,5 3 2,5 11 7 2,5 7 2,5240 9 30 8,5 3,5 8,5 3,5 9 29 8,5 3 8,5 3250 10 32 9 3,5 9 3,5 10 33 9 3,5 9 3,5300 17 50 11 4 11 4 19 50 10 4,5 10 4,5350 29 60 12 4,5 12 4,5 29 60 12 5,5 12 5,5400 60 90 12 3 12 3 39 60 14 6 14 6500 60 90 15 4 15 4 50 90 18 8 18 8600 60 90 18 5,5 18 5,5 60 90 21 8,5 21 8,5630 60 90 19 5,5 19 5,5 60 90 21 8,5 21 8,5800 90 90 20 5,5 20 5,5 90 90 26 9 26 91000 90 90 26 7 26 7 90 90 27 5,5 27 5,51200 90 90 31 8,5 31 8,5 90 90 30 6 30 61250 90 90 31 8 31 8 90 90 32 6,5 32 6,5


��ABB

KOKM072LHversion01 KOKM072LHversion02126

60

126180

90

200

200

58

40

BA

M5 M3

Ø11 M8

40 12

24,5

1037

Ø130

117,5 235

37

1914,5

126

70

BA

Ø11

M8

1037

117,5

235

90

2

37

126180

90

200

200

M5 M530

,5

26

37

Ø130

TypeDims.[mm]A B

KOKM072LH6 60 30KOKM072LH9 90 60KOKM072LH12 120 90

fixing base

rating plate

seal wire pocket PG16

screw cap for bushing PG16

secondary terminals, lenght 6m, cable 4mm

330360

170

330

15

15

2

55,5145170200

105,5

112,5

117,5

245Ø1

30

KOKM1LH...version03

INDEXofCT Description Code A B

1YMA183183R0013 CTKOKM1LH12withcableandP2fromcableside KOKM1LH12-v3-P2 120 P2






Overalldimensions

�� ABB

KOKM072NJ8version01

Table13.ForselectingcurrenttransformersKOKM...NJ



MeasurementclassFS

ProtectionclassFa

MeasurementclassFS

ProtectionclassFa

0,5 1 10P10 10P20 5P10 5P20 0,5 1 10P10 10P20 5P10 5P2050 – – 2 1 0,5 0,5 – 2 0,5 0,5 0,560 – – 2,5 1 0,5 1 – – 2,5 1,5 0,5 0,570 – – 3 1,5 1,5 1,5 – – 3 1,5 1 175 – – 3,5 1,5 2 1,5 – – 3 1,5 1,5 1100 – 0,5 4,5 2 4 2 – 0,5 4 1,5 4 1,5110 – 2 5 2,5 4,5 2,5 – 1,5 4,5 2 4,5 2120 – 3,5 5,5 2,5 5,5 2,5 – 3 5 2 5 2140 – 5 6,5 3 6,5 3 – 4,5 6 2,5 6 2,5150 – 6,5 7 3 7 3 – 5 6,5 3 6,5 3200 1,5 8 8 3,5 8 3,5 1 9 9 4 9 4240 4,5 13,5 9,5 4,5 9,5 4,5 4,5 14 10 5 10 5250 5 15 10 4,5 10 4,5 5 15 11 5 11 5300 9 23 12 5,5 12 5,5 11 26 13 6 13 6350 18 35 14 6,5 14 6,5 18 32 15 7 15 7400 29 50 16 7,5 16 7,5 20 40 18 8 18 8500 35 80 20 9 20 9 30 60 20 10 20 10600 50 90 24 11 24 11 45 90 25 12 25 12630 50 90 25 11 25 11 50 90 26 12 26 12800 60 90 31 14 31 14 90 90 30 13 30 131000 90 90 38 16 38 16 90 90 38 14 38 141200 90 90 42 18 42 18 60 90 40 13 40 131250 90 90 45 18 45 19 60 90 40 12 40 12


KOKM...NJ– is the indoor,cable, lowvoltagecurrent transformer in resin insulation.TransformersofKOKMtypearesuitableformeasurementofphasecurrentsinlowvoltageswitchgears.Astheprimaryconductorisusedthenon-insulatedbusbarorthelowvoltagecable.CurrenttransformersofKOKMseriescanbealsousedformeasurementofthephasecurrentatvoltagesevenhigherthen1,2kV,iftheinsulationofthehighvoltageprimaryconductorfulfilstheequirementsofelevantstandardselatingtotheworkingvoltage.

TechnicaldataType................................................................................................................KOKM...NJMaximumnumberofwindings......................................................................................... 1HighestpermissiblevoltageofthecurrenttransformerUr......................................1,2kVRatingtestvoltageofinsulation(50Hz,1minUp)......................................................6kVRatingfrequency.......................................................................................................50HzRatingthermalcurrent............................................................................................1,2xIpnShort-timewithstandthermalcurrentIth,1s............................................................60xIpnRatingpeakcurrentIdyn......................................................................................... 2,5xIthWorkingtemperaturerange............................................................................... -5...+40°CConformitywithstandards-IEC,ANSI,PN-EN,CAN

��ABB

KOKM072NJversion02KOKM072NJversion01

BA

240

120

5510

90

105

215

235

M8

Ø155

TypeDims.[mm]A B

KOKM072NJ6 60 30KOKM072NJ9 90 60KOKM072NJ12 120 90

secondary terminals, lenght 6mmcable 4mm

fixing plate

rating plate

seal wire pocket PG16

screw cap for bushing PG16

330360

A

205

15 15

2

20573

235

Ø155

112,5

127,5

105,5

245

KOKM1NJ...version03

INDEXofCT Description Code A B

1YMA183182R0013 CTKOKM1NJ12withcableandP2fromcableside KOKM1NJ12-v3-P2 120 P2






Overalldimensions

�� ABB

KOKM072BA10,CA10-ringcorecurrenttransformerstypesKOKM072BA10,CA10,arepredictedforsupplyingmeteringappliancesaswellasprotectiondevices,atthemaxi-mumnominalvoltage0,72kVandnominalfrequency50or60Hz.Transformerscanbemountedinindoorconditionsinsidetheswitchgear.Thenominaltemperatureoftransportandstorageforthisindoortransformersisintherange+50C,+400C.Secondarycircuitsshouldbemountedusingcopperwireswiththecrosssectionatleast2,5mm2

.Connectingschemesforcurrentandenergymeasurementareshownonpages30and31.

CableCurrentTransformers,indoortypeKOKM(forRMU)

Table14.Electricalparameters,dimensions,connectiondiagrams

Type KOKM072BA10 KOKM072CA10 KOKM072CA10 KOKM072CA10 KOKM072CA10 KOKM072CA10

Numberofwindingsformeasuring

2pcs.(terminalsS0-S1-S2

137turns(48+89))

2pcs.(terminalsS0-S1-S2)

1116turns(391+725)

1pcs.(terminalsS1-S2

187turns)


381turns)


765turns)


1535turns)Numberofwindingsforthetest

1pcs.(terminalsC-D48turns)


1pcs.(terminalsC-D50turns




Ratedinsulationlevel 0,72/3/- 0,72/3/- 0,72/3/- 0,72/3/- 0,72/3/- 0,72/3/-HighestvoltageforequipmentUm

0,72kV 0,72kV 0,72kV 0,72kV 0,72kV 0,72kV

Ratedpower-frequencywithstandvoltage(r.m.s.) 3kV 3kV 3kV 3kV 3kV 3kV

Ratedfrequencyfn 50/60Hz 50/60Hz 50/60Hz 50/60Hz 50/60Hz 50/60HzRatedprimarycurrentIpn 14,4–41,1A 117,4-335A 14,4A 28,8A 57,6A 115,2ARatedsecondarycurrentIsn 0,3A 0,3A 0,075A 0,075A 0,075A 0,075ATestWinding 0,3A 0,3A 0,288A 0,288A 0,288A 0,288AAccuracyclasswithrelaytypeMPRB/WIC1 5P30 5P30 10P80 5P80 5P80 5P80

Ratedburden 0,1VA 0,1VA 0,1VA 0,1VARatedcontinuousthermalcurrentIcth

4xIpn(ext.400%)

4xIpn(ext.400%)

10xIpn(ext.1000%)

10xIpn(ext.1000%)

10xIpn(ext.1000%)

10xIpn(ext.1000%)

Ratedshort-timethermalcurrentIth,1s 100xIpnA 100xIpnA 20kA 20kA 20kA 20kA

RateddynamiccurrentIdyn 2,5xIthA 2,5xIthA 62,5kA 62,5kA 62,5kA 62,5kAInsulationclass E E E E E EProtection IP20 IP20 IP20 IP20 IP20 IP20ExternaldimensionsDxdxLxH 100x42x100x124 100x50x100x124 100x50x100x124 100x50x100x124 100x50x100x124 100x50x100x124

Weight 3,3 2,8 2,27 1,9 1,4 1,7Workingtemperaturerange -25...+70°C -25...+70°C -25...+70°C -25...+70°C -25...+70°C -25...+70°CConformitywithstandards IEC60044-1 IEC60044-1 IEC60044-1 IEC60044-1 IEC60044-1 IEC60044-1

��ABB

Terminalmarking

KOKM072CA10forREJ603*

Terminals Ratio Burden Class Turnsofthewinding

S1–S2 14,4/0,075A 0,1VA 10P80 187

C-D 0,288A testwinding 50

DC

P1S2S1

P2

KOKM072CA10=MPTA96-117-737

Terminals Ratio Class Turnsofthewinding

S0–S1 117,4/0,3A 5P30 391

S0–S2 335/0,3A 5P30 1116(391+725)


DC

P1S1S0

P2S2



S1–S2 57,6/0,075A 0,1VA 5P80 765


DC

P1S2S1

P2



S1–S2 115,2/0,075A 0,1VA 5P80 1535


DC

P1S2S1

P2



S1–S2 28,8/0,075A 0,1VA 5P80 381


DC

P1S2S1

P2

*orothernonABBrelayse.g.WIC

KOKM072BA10=MPTA96-14-90

Terminals Ratio Class Turnsofthewinding

S0–S1 14,4/0,3A 5P30 48

S0–S2 41,1/0,3A 5P30 137(48+89)


DC

P1S1S0

P2S2

�0 ABB

OutsidedimensionofCT’s

Connectiondiagramforratio14,4/0,075A 28,8/0,075A 57,6/0,075A 115,2/0,075A

133

18

=

115

100

Ø6

.5

60

=

70

80

4

143

124

R50

Ø50

L1 L2L3

WIC1

S1

S2CD

S1

S2CD

S1

S2CD

FI+

FI-TC+

TC-

230V115VNN

1

23

gn/ge

1

23

gn/ge

Flagindicator

Energiearme/lowenergy

Extrenalpowersource

Overalldimensions

�1ABB

OutsidedimensionofCT’s

Connectiondiagramforratio14,4-41,1/0,3A 117,4-335/0,3A

133 11

5

100

Ø6

.560

18

==

70

80

4

143

124

R50

Ø42

S2

S1S0

C

D

L1 L2 L3

POWERSUPPLY230VAC

REMOTETRIP230VAC

MPRB

1234567891011121314

15161718

S2

S1S0

C

DS2

S1S0

C

D

�� ABB

S1

S2C

D

S1

S2C

D

S1

S2C

D

S1

S2

TC(+)

TC(-)

BI

BI

REJ603

N

L3

L2

L1

E

Trip Coil

External Input

Productnumber TypeofCT PrimarycurrentIpn[A]

SecondarycurrentIsn[A]

1YMA183190R0001 KOKM072CA10 14,4A 0,075A forREJ603-CT2




1YMA183190R0005 KOKM072CA10 117,4-335A 0,3A

1YMA183190R0006 KOKM072BA10 14,4-41,1A 0,3A

OrderexampleKOKM072CA10(1YMA183190R0003);57,6/0,075A/A;0,1VA;5P80;Ith=20kA/1s;IEC60044-1;21pcs

��ABB

SpecialCurrentTransformer,indoortypeKORI072GH8

KORI072GH8-lowvoltagecurrentinstrumenttransformer,withoutprimaryconductor.KORI072GH8currenttransformerscanbeassembledonthebushingwiththeirowninsulation.Transformersofthistypeseriesenabletheprotectionandaredesignedforuseinindoorinstallations.TheKORItransformersaredesignedasonetransformerratioorwithmoreratiohavingthepossibilitytobereconnectableonthesecondaryside.AssemblyprocedureofthetransformersonthebushingsinUnigear550isexactlyspecified.Allthetransformersmeetthespecificationsofrelevantstandards,i.e.theIEC60044-1.

Table15.TechnicalparametersType(lowvoltagecurrenttransformerformediumvoltageapplication) KORI

Highestvoltageforequipment Um [kV] 0.72

Powerfrequencytestvoltage, 1min. [kV] 3

Ratedinsulationlevel [kV] 0,72/3/-

Ratingfrequency fn [Hz] 50

Ratedprimarycurrent [A] 1600to2500

Ratedsecondarycurrent [A] 1or5

Ratedshort-timethermalcurrent Ith3s. [kA] 50.0

Ratingpeakcurrent Idyn [kA] 125.0

Accuracyclasses [kA] 5P20

Burden [VA] 10,15,20,25or30

Highestvoltageofasystem [kV] 12-17.5kVbyusingCTROD

Flammabilityclass B

KORI072GH8currenttransformersaredesignedforABBswitchgeartypeUnigear550andhavethefollowingdimensions.

�� ABB

Ipn[A]

Isn[A]

Burden[VA]

Class[-]

1600 1 10 5P201600 1 15 5P201600 1 20 5P201600 1 25 5P201600 1 30 5P201600 5 10 5P201600 5 15 5P201600 5 20 5P201600 5 25 5P201600 5 30 5P202000 1 10 5P202000 1 15 5P202000 1 20 5P202000 1 25 5P202000 1 30 5P202000 5 10 5P202000 5 15 5P202000 5 20 5P202000 5 25 5P202000 5 30 5P202500 1 10 5P202500 1 15 5P202500 1 20 5P202500 1 25 5P202500 1 30 5P202500 5 10 5P202500 5 15 5P202500 5 20 5P202500 5 25 5P202500 5 30 5P20

Note:1)Everyotherparametershavetobeagreedwiththemanufacturerandwillbeconsideredonspecialbasis.2)Reconnectablevariantsarealsopossible,butneedtobeexaminedonspecialbasis(accordingtocustomer’srequirementandtheagreementwithmanufacturer).

90

29

173

197

197173

197Ø90

4xØ8.50

40 7517

RatingPlate

��ABB

CableCurrentTransformers,outdoortypeKOKU

KOKU-currenttransformersaresuitableformeasuringofphasecurrents.Anuninsulatedbusbarorcableservesastheprimaryconductor.SeriesKOKUcurrenttransformerscanalsobeusedformeasuringthephasecurrentatvoltagesevenhigherthan0,72kV(forKOKU072G4)or1,2kV(forKOKU1),iftheinsulationoftheprimaryconductorfulfilstherespectivestandardsfortheoperatingvoltage.Thesecondarywindingandringshapedironcoreiscastinresinwhichhasgoodelectricalandmechanicalproperties.

Table16.TechnicaldataTransformertype KOKU072G4 KOKU1

Ratedvoltage Um [kV] 0.72(1) 1.2(1)

Powerfrequencytestvoltage Up(1min) [kV] 3 6

Lightingtestvoltage Upp [kV] - -

Frequency fn [Hz] 50lub60

Max.primarycurrent Ipn [A] 50÷800 50÷10000

Ratedsecondarycurrent Isn [A] 1lub5

Ratedthermalcurrent Icont [A] 1,2xIpn(2)

Short-timewithstandcurrent Ith(1sek) [kA] 60xIpn(3)

Peakwithstandcurrent Idyn [kA] 2,5xIth(4)

Secondaryterminals For6mm2conductorOperatingtemperaturerange [°C] -35…+40Transportandstorage [°C] -65…+55Electricalstandards IEC,VDE,ANSI,BS,AS,CAN

(1) Theinsulationleveloftheprimaryconductordeterminesthemaximumoperatingvoltage.(2) Max.IcontforKOKU072G4Icont=1000A,forKOKU1Icont=10000A(3) Max.Ith=100kA,(4) Max.Idyn=200kA

�� ABB

Table17.StandardsparametersforKOKU072G4

Type Windowdiameter

Totalheight Holecenterheigh Ratio Accuracy

Class Burden Shortcircuitcurrent Standard

Ith,3s

[mm] [mm] [mm] [A] [VA] [kA]KOKU072G4 ∅135 230 125 600/1 5P10 3 25 IEC60044-1

Note:Ifyouneedotherelectricalparametersthangivenintablespleasecontactwithoursalesdepartment.


– impropertransport,– improperstorage,– notabidingoftheinstructionbeforeinstallingandduringoperating ofthetransformers,– improperselectionofthetransformerfortheelectricpowersystem.



OrderexampleKOKU1RL16;2000/1A/A;20VA;5P20;Ith=60xIpn/1s;IEC60044-1;6pcs

Table18.KOKU1Example KOKU1KL12

Transformerswidth 12=120mm(possibility-8,10,12,14,16,18,20,22,24,...30)Outerdiameter L=270mmHolediameter K=120mmRatevoltage 1=1,2kVType KOKU-indooruse,(KOKM-outdooruse)

Outerdiameter

[mm]

Holediameter[mm]

Dra

win

g

Cas

ting

heig

ht

[mm

]

Tota

lhei

ght

[mm

]

Hol

ece

nter

he

ight

[m

m]

A B D E F G H K N R S U W X Y Z

33 42 60 70 85 90 100 120 155 180 200 250 350 400 450 500

C 148 80160

80160

80160

80160

80160 KOKU1_C_ 183 249 112

F 186 80160

80160

80160

80160

80160

80160

80160 Rangeoftransformerswidth KOKU1_F_ 213 279 131

H 200 80180

80180

80180

80180

80180

80180

80180

80180 KOKU1_H_ 235 301 138

J 235 80300

80300

80300

80300

80300

80300

80300

80300 KOKU1_J_ 265 331 158

K 250 80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKU1_K_ 275 341 158

L 270 80200

80200

80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKU1_L_ 297 363 158

M 280 80240

80240

80240

80240

80240

80240

80240

80240

80240

80240

80240 KOKU1_M_ 297 363 158

P 340 80200

80200

80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKU1_P_ 379 445 204

T 450 80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKU1_T_ 465 513 225

W 590 80200

80200

80200

80200

80200

80200

80200

80200

80200

80200

80200 KOKU1_W_ 605 653 300

��ABB

KOKU1_C_ KOKU1_F_

Overalldimensions

±2

S1 S2

P2P1

+20

±2

±3±2

±2

IP44

1617

M5 M5

Pr 22,5Pk 16

Pg 16

97142

249

KOKU 1 _ C __

M8

P1

Di = 33 42 60 70 85A B D E F

8 10 12 14 16B = 80 100 120 140 160C = 80 100 120

112

148

Di

14

183

18

1140

52124

C20

B

(1 2

0.. .1

60)

B

(80

...1 0

0 )

864

±2

140

52

1140

B

(80)

CB( 1

000.

..160

)± 2

±2±2

20

1152707518

78

B

(60.

..140

)

80

B

(16

0 )±2

P1

S1 S2

P2

P1

+30

P1

131

170

14

18

186

Di

213

±2

±3

864

17

16

97142

279

IP44

M5

Pk 16Pr 22,5PG 16

M5

KOKU 1 _ F __Di = 33 42 60 70 85 90 100

A B D E F G H

8 10 12 14 16

B = 80 100 120 140 160C = 80 100 120

M8

KOKU1_H_

52

1140

B

(80)

±2

C

B

(100

...18

0)±2

P1

S1

P1 P2

S2M8

Di = 33 42 60 70 85 90 100 120A B D E F G H K

8 10 12 14 16 18

B = 80 100 120 140 160 180C = 60 80 100 120 140

±2

+30

138200

170

14

18

Di

235±

2

301

±3

140

IP44

16

64 8

17

M5M5

Pg 16

Pk 16Pr 22,5

97142

KOKU 1 _ H _

KOKU1_J_

�� ABB

KOKU1_L_KOKU1_K_

150

1440

20CB

±2

P1

P1

S1

P2

S2M8

Di = 33 42 60 70 85 90 100 120 155A B D E F G H K N

8 10 12 14 16 18 20B = 80 100 120 140 160 180 200C = 40 60 80 100 120 140 160

±2

0-2

+30

158

270

Di

250

15

1827

5±2

341

±3

246

IP44

16

64 8

17

M6

Pk 16Pr 22,5Pg 16

M597142

KOKU 1 _ K _

150

20CB

±2

1440

P1

P1

S1

P2

S2

158

M8

Di = 33 42 60 70 85 90 100 120 155 180 200A B D E F G H K N R S

8 10 12 14 16 18 20

B = 80 100 120 140 160 180 200C = 40 60 80 100 120 140 160

±2

+30

0-2270

270

Di

15

1829

7±236

3±3

246

IP44

17

16

64 8

Pk 16Pr 22,5Pg 16

M5M6 97142

KOKU 1 _ L _

KOKU1_M_ KOKU1_P_

��ABB

KOKU1_T_ KOKU1_W_

Note:Withoutfixingbase.Fixdirectlytofloor. Note:

Withoutfixingbase.Fixdirectlytofloor.

S2S1

P2

S1 S2

Cable, length 1,6 m

Rating plate

M5 M5

M12X60

∅135

125

150

210

45

111

230

∅� 1

3,3

1

S2 = 2

2

S1 = 1

KOKU072G4

�0 ABB

SpecialCurrentTransformer,outdoortypeKODI

KODI-bushingcurrenttransformertypeKODI,ispredictedforsupplyingmeteringappli-ancesaswellasprotectiondevices,atthemaximumnominalvoltage0,72kVandnominalfrequency50or60Hz.Transformercanbemountedinoutdoorconditionsonthetopofdistributiontransformersstraightonthebushing.Thenominaltemperatureoftransportandstorageforthatoutdoortransformerisintherange-350C,+400C.Secondarycircuitsshouldbemountedusingcopperwireswiththecrosssectionatleast2,5mm2.ConnectingschemesforcurrentandenergymeasurementareshownontheFig.1and2.

E

H

F

G

I

J MC

D

ØK

ØA

ØB

ØL

C

1829

typeofCT

diameterKODI1PU7 KODI1MN7 KODI1KK7 KODI1HH7KODI1FG7

A 160 140 120 100 80

B 266 246 226 206 186

C 214 197 181 164 152

D 176 176 176 176 176

E 181 171 161 151 141

F 64 64 64 64 64

G 152 142 132 122 112

H 16 16 16 16 16

I 8 8 8 8 8

J 70 70 70 70 70

K 12 12 12 12 12

L 21 21 17 17 17

M 242 227 206 191 178

Overalldimensions

�1ABB

Fig.1. Energy measurement diagram. Fig.2. Current measurement diagram.

Measurmentdiagram

�� ABB

KOLT-currenttransformerstypeKOLThaveneitherhousingnorprimarywinding.Underoperatingconditionstheprimarywindingisthepowertransformer’sbushinginsulator,whichisatthesametimethemaininsulationofthecurrenttransformer.Thesecondarywindingsareevenlywoundonthecircumferenceofthetoroidalcore.

Secondarywindinginsulationismadeofpolyestertape(torlen).

Currenttransformerswiththeweightofapprox.100kgormoreconsistofseveralparts–tofacilitatebothtransportandinstallation.Eachseparatepartcontainsthefollowinginformation:aserialnumberwhichcoincideswiththeonestatedontheratingplateaswellasmarkingsofprimaryandsecondarywindingterminals.

Table18.Technicaldata Type KOLT

PrimarycurrentrangeIpn [A] 100A-15000ARatedsecondarycurrentIsn [A] 1A÷5AInsulationlevel 0.72/3/-Rangeofratedoutput Sn[VA] 1VA-90VANumberofwindings 1-4ConformitywithStandards IEC,PN-EN,SEV,VDE,ANSI,BS,CAN,CSA,GOSTAccuracyclassacc.toIEC 0.2s;0.5s;0.2;0.5;1;3;5;5P;10P;PXFS 5;10ALF 5;10;15;20;25;30Ratedfrequency f[Hz] 50,60

Short-timewithstandthermalcurrentIth(1sek) [A] 100xIpnmax.100kA

Insulationclassacc.toIdyn [A] 2,5xIthmax.250kA

KlasaizolacjiwgIEC BMin.insidediameterfA[mm] min.30mmdependingonparametersMax.outsidediameterfB[mm] max.900mmdependingonparametersHeighth[mm] h[mm] max.900mmdependingonparametersLengthofleadsD[mm] D[mm] 1m,otherlengthattheclient’srequest

Transformerswithotherdimensionsandparametersareavailableattheclient’srequest.

CurrentTransformerstypeKOLT(forOil-immersedTransformers)

��ABB

KOLT072115x235x60

KOLT072230x260x45

Versionsavailable-singlephase-withoneorseveralwindings-withoneorseveraltappings-insulation–cottontape+impregnatingvarnish-withouthousing-withoutprimarywinding

AplicationThecurrenttransformerstypeKOLTaresuitableformountinginsidepowertransformersand are suitable for operating immersed in oil, under conditions of moderate andtropical climate.These current transformers are designed for supplying measurementand protection circuits of power systems operating under rated frequency of 50 Hz.

MarkingEachcurrenttransformerisfittedwithratingplateinaccordancewithIEC60044-1Stan-dard.Valuesofratedvoltageandratedpowerfrequencytestvoltageofinsulation–statedontheratingplate–relatetotheinsulationofsecondarywindings.Primaryandsecondaryterminalsaredirectlymarkedonthecurrenttransformer.

TransportWhiletransportedcurrenttransformersmustbeprotectedagainsthumidityandheavyshocks.Currenttransformerswiththeweightexceeding50kgandcurrenttransformersespeciallysensitivetoshocksaretransportedonwoodenpallets.

InstallationDuringinstallationofcurrenttransformersobservethefollowinginstructions:

-Secondarywindingmarked1S1-1S2shouldbeplacedonthetop;-Payspecialattentiontokeepthesamepolarizationforallpartsofthecurrenttrans former(P1–P2–P1–P2markings);.- Avoidshocks.

CompliancewithStandardsCurrenttransformersmeettherequirementsofthefollowingstandards:IEC60044-1

Attheclient’srequestwemanufacturecurrenttransformersmeetingtherequirementsofSEV,VDE,ANSI,BS,CAN,CSA,GOSTStandards


– impropertransport,– improperstorage,– notabidingoftheinstructionbeforeinstallingandduringoperatingofthetransformers,– improperselectionofthetransformerfortheelectricpowersystem.

�� ABB

OrderingTheordermustcontainthefollowing:

- nameandtypeofcurrenttransformer- ratedprimarycurrent/ratedsecondarycurrentIpn/Isn[A]- short-timethermalcurrent,1sIth[kA]- ratedoutputpowerandaccuracyclassofeachwindingSn[VA]- limittransformerdimensions(min.insidediameter,max.outsidediameter,max.height)- lengthofleads- standard- quantities.

OrderexampleCurrenttransformertypeKOLT1200/5/1/1AIth=72kAI.15VA,class0.5FS10II.60VA,class5P15III.60VA,class5P20min.insidediameterA=∅150mmmax.outsidediameterB=∅300mmmax.heighth=200mmlengthofleads1,5mStandardIEC60044-1quantity–9pcs.

1S... 2S... ...S...

D

1S5 1S4 1S3 1S2 1S1

ØB

ØA

h

Rat

ing

plat

e

P1

Rat

ing

plat

e

Rat

ing

plat

e

Overalldimensions

ABBSp.zo.o.Branch in Przasnyszul. Leszno ��0�-�00 Przasnysz, PolandPhone: (+�� ) �� , �� 0Fax: (+�� ) ��

www.abb.com

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catalogue - abb ltd · outside dimension of ct's ... kola 06 j2 50 1 10p10 0.5 300 x 497 410 x...

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