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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]
OrderingdataTheordershouldcontainfollowingdata:
-typeofcurrenttransformer-ratedprimarycurrent/ratedsecondarycurrent[A/A] -ratedburdenandaccuracyclassforeachwinding[VA]-short-timethermalcurrentIth-standard-quantity
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.
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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.
WarrantyThefactorygrants24monthsofwarrantyfromthedayofputtouseofthetransformer,butnolongerthan36monthsfromthedayofsell.Thewarrantyconcernsonlymanufacturingdefectsanddoesnotincludedefectsarosebecauseof:
– 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
OrderingdataTheordershouldcontainfollowingdata:
-typeofcurrenttransformer-ratedprimarycurrent/ratedsecondarycurrent[A/A] -ratedburdenandaccuracyclassforeachwinding[VA]-short-timethermalcurrentIth-standard-quantity
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
PrimaryCurrentIpn[A]
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
Atspecialrequestcanbedeliveredalsocurrenttransformerswithvaluesofsecondarycurrentdifferentthesegiveninthetableabove(e.g.2aor4,3A)andcurrenttransformersforfrequency60Hz.
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
PrimaryCurrentIpn[A]
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
Atspecialrequestcanbedeliveredalsocurrenttransformerswithvaluesofsecondarycurrentdifferentthesegiveninthetableabove(e.g.2aor4,3A)andcurrenttransformersforfrequency60Hz.
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
PrimaryCurrentIpn[A]
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 – – 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
Atspecialrequestcanbedeliveredalsocurrenttransformerswithvaluesofsecondarycurrentdifferentthesegiveninthetableabove(e.g.2aor4,3A)andcurrenttransformersforfrequency60Hz.
��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
1YMA183183R0012 CTKOKM1LH9withcableandP2fromcableside KOKM1LH9-v3-P2 90 P2
1YMA183183R0011 CTKOKM1LH6withcableandP2fromcableside KOKM1LH6-v3-P2 60 P2
1YMA183183R0003 CTKOKM1LH12withcableandP1fromcableside KOKM1LH12-v3-P1 120 P1
1YMA183183R0002 CTKOKM1LH9withcableandP1fromcableside KOKM1LH9-v3-P1 90 P1
1YMA183183R0001 CTKOKM1LH6withcableandP1fromcableside KOKM1LH6-v3-P1 60 P1
Overalldimensions
�� ABB
KOKM072NJ8version01
Table13.ForselectingcurrenttransformersKOKM...NJ
PrimaryCurrentIpn[A]
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 – – 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
Atspecialrequestcanbedeliveredalsocurrenttransformerswithvaluesofsecondarycurrentdifferentthesegiveninthetableabove(e.g.2aor4,3A)andcurrenttransformersforfrequency60Hz.
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
1YMA183182R0012 CTKOKM1NJ9withcableandP2fromcableside KOKM1NJ9-v3-P2 90 P2
1YMA183182R0011 CTKOKM1NJ6withcableandP2fromcableside KOKM1NJ6-v3-P2 60 P2
1YMA183182R0003 CTKOKM1NJ12withcableandP1fromcableside KOKM1NJ12-v3-P1 120 P1
1YMA183182R0002 CTKOKM1NJ9withcableandP1fromcableside KOKM1NJ9-v3-P1 90 P1
1YMA183182R0001 CTKOKM1NJ6withcableandP1fromcableside KOKM1NJ6-v3-P1 60 P1
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)
1pcs.(terminalsS1-S2
381turns)
1pcs.(terminalsS1-S2
765turns)
1pcs.(terminalsS1-S2
1535turns)Numberofwindingsforthetest
1pcs.(terminalsC-D48turns)
1pcs.(terminalsC-D391turns)
1pcs.(terminalsC-D50turns
1pcs.(terminalsC-D100turns)
1pcs.(terminalsC-D200turns)
1pcs.(terminalsC-D400turns)
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)
C-D 0,3A testwinding 391
DC
P1S1S0
P2S2
KOKM072CA10forREJ603*
Terminals Ratio Burden Class Turnsofthewinding
S1–S2 57,6/0,075A 0,1VA 5P80 765
C-D 0,288A testwinding 200
DC
P1S2S1
P2
KOKM072CA10forREJ603*
Terminals Ratio Burden Class Turnsofthewinding
S1–S2 115,2/0,075A 0,1VA 5P80 1535
C-D 0,288A testwinding 400
DC
P1S2S1
P2
KOKM072CA10forREJ603*
Terminals Ratio Burden Class Turnsofthewinding
S1–S2 28,8/0,075A 0,1VA 5P80 381
C-D 0,288A testwinding 100
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)
C-D 0,3A testwinding 48
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
1YMA183190R0002 KOKM072CA10 28,8A 0,075A forREJ603-CT3
1YMA183190R0003 KOKM072CA10 57,6A 0,075A forREJ603-CT4
1YMA183190R0004 KOKM072CA10 115,2A 0,075A forREJ603-CT5
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.
WarrantyThefactorygrants24monthsofwarrantyfromthedayofputtouseofthetransformer,butnolongerthan36monthsfromthedayofsell.Thewarrantyconcernsonlymanufacturingdefectsanddoesnotincludedefectsarosebecauseof:
– impropertransport,– improperstorage,– notabidingoftheinstructionbeforeinstallingandduringoperating ofthetransformers,– improperselectionofthetransformerfortheelectricpowersystem.
OrderingdataTheordershouldcontainfollowingdata:
-typeofcurrenttransformer-ratedprimarycurrent/ratedsecondarycurrent[A/A] -ratedburdenandaccuracyclassforeachwinding[VA]-short-timethermalcurrentIth-standard-quantity
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
�� 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
WarrantyThefactorygrants24monthsofwarrantyfromthedayofputtouseofthetransformer,butnolongerthan36monthsfromthedayofsell.Thewarrantyconcernsonlymanufacturingdefectsanddoesnotincludedefectsarosebecauseof:
– 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: (+�� ��) �� �� ���
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