Siemens SMART 7KT User manual

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SMART 7KT0110 and 7KT0120 Manual
MANUAL
SMART KT
Discrete Panel Meter
7KT0110 (VA meter) and
7KT0120 (VAF Meter)
SMART 7KT power monitoring devices

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SMART 7KT0110 and 7KT0120 Manual
1. Introduction 3
2. Safety precautions 4
3. Technicalspecication 5
4. Installation 7
5. Connection 9
6. Conguration 12
7. Maintenance 16
SMART 7KT
Discrete Panel Meter
7KT0110 (VA meter) and
7KT0120 (VAF Meter)
Manual
Index
09/2022
SME7KT01X001

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SMART 7KT0110 and 7KT0120 Manual
Introduction 
1.1 Purpose of this document
This present manual describes the SMART 7KT discrete panel meter.
It is intended for the use of:
• Planners
• Plantoperators
• Commissioningengineers
• Serviceandmaintenancepersonnel
1.2 Required basic knowledge
Ageneralknowledgeoftheeldofelectricalengineeringisrequiredtounderstandthismanual.
Knowledgeoftherelevantsafetyregulationsandstandardsisrequiredforinstallingandconnectingthedevice.
1.3 Components of the product
The carton for the products contain
1 SMART 7KT meter
1setofclamps(4clamps)formountingthemeteronthepaneldoor
1Gasket
1Operatinginstruction
7KT0110
Unit 1x nos. Gasket1xnos. SlidingClamp4xnos.
7KT0120
Unit 1x nos. Gasket1xnos. SlidingClamp4xnos.

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SMART 7KT0110 and 7KT0120 Manual
Safety
precautions 
DANGER
Hazardous voltage will cause death or serious injury.Turnoffandlockoutall
powersupplybeforeworkingonthisdevice.
NOTICE
Installationandmaintenancemustbecarriedoutbyqualied
personnel.
ThisproducthasbeendesignedforenvironmentA.Use
ofthisproductinenvironmentBmaycauseunwanted
electromagneticdisturbancesinwhichcasetheusermay
requiretotakeadequatemitigationmeasures.
Risk of damage: Please ensure the proper isolation of meter
during the IR (Meggering) test.
Allsafetyrelatedcodications,symbolsandinstructionsthatappearinthisoperatingmanualorontheequipment
mustbestrictlyfollowedtoensurethesafetyoftheoperatingpersonnelaswellastheinstrument.Iftheequipmentis
notusedinamannerspeciedbythemanufactureritmightimpairtheprotectionprovidedbytheequipment.
Donotusetheequipmentifthereisanymechanicaldamage.
Ensurethattheequipmentissuppliedwithcorrectvoltage.
CAUTION:
1. Read complete instructions prior to installation and operation of the unit.
2. Riskofelectricshock.
3. Theequipmentinitsinstalledstatemustnotcomeincloseproximitytoanyheatingsources,oils,steam,
causticvaporsorotherunwantedprocessbyproducts.

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SMART 7KT0110 and 7KT0120 Manual
Technical
specification 
7KT0110 (VA meter) 7KT0120 (VAF meter)
PowerMonitoringDevicePanel
instrumentforvoltageand
currentLEDdisplayVaux:95Vto
240VACx/1or5A,Class1
PowerMonitoringDevicePanel
instrumentforvoltage,current
andfrequencyLEDdisplayVaux:
95Vto240VACx/1or5A,
Class1
Measurements
measuringprocedure
•forvoltagemeasurement True RMS True RMS
•forcurrentmeasurement True RMS True RMS
typeofmeasuredvaluedetection complete complete
voltagecurve Sinusoidal or distorted Sinusoidal or distorted
measurablelinefrequency
•initialvalue 45Hz 45Hz
•full-scalevalue 65Hz 65Hz
operatingmodeformeasuredvaluedetectionautomaticline
frequencydetection
–Yes
Supply voltage
designofthepowersupply SMPSpowersupply SMPSpowersupply
typeofvoltageofthesupplyvoltage AC AC
Degree of protection class
protection class IP on the front IP54 IP54
protection class IP of the terminal IP20 IP20
Suitability
suitability for operation Installation in stationary panels
in closed rooms
Installation in stationary panels
in closed rooms
Product Functions
product function
•voltagemeasurement Yes Yes
•currentmeasurement Yes Yes
•frequencymeasurement –Yes
Display and operation
designofthedisplay LED LED
heightofthedisplay 39mm 50mm
widthofthedisplay 40.5mm 45.4mm
colorofthebackgroundofthedisplay Black Black
nationallanguageonthedisplayscreenissupported EN EN
numberofkeys 2 2
Fault limits
referenceconditionformeteringaccuracy InaccordancewithIEC61557-12 InaccordancewithIEC61557-12
formulaforrelativetotalmeasurementinaccuracy
•formeasuredvariablevoltage Class1asperIEC61557-12 Class1asperIEC61557-12
•formeasuredvariablecurrent Class1asperIEC61557-12 Class1asperIEC61557-12
•formeasuredvariablefrequency –Class0.1asperIEC61557-12

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SMART 7KT0110 and 7KT0120 Manual
7KT0110 (VA meter) 7KT0120 (VAF meter)
Measuring inputs
measurablesupplyvoltagebetweenLandNatACmaximumrated
value
240 V 240 V
measurablesupplyvoltagebetweenLandNatAC
•minimum 11 V 11 V
•maximum 300 V 300 V
measurablesupplyvoltagebetweenthelineconductorsatAC
maximumratedvalue
415V 415V
measurablesupplyvoltagebetweenthelineconductorsatAC
•minimum 19V 19V
•maximum 519V 519V
voltagemeasuringrangeextensionwithexternalvoltagetransformers upto500kV upto500kV
lineconductorsandneutralconductorsinternalresistanceforvoltage
measurement
1.12MΩ 1.12MΩ
measuringcategoryforvoltagemeasurement CATIII CATIII
measurable current 1A/5A 1A/5A
relativemeasurablecurrentatAC
•minimum 1 % 1 %
•maximum 120 % 120 %
currentmeasuringrangeextensionwithexternalcurrenttransformers Upto10kA Upto10kA
measuringcategoryforcurrentmeasurement CATIII CATIII
measurablelinefrequency –45...65Hz
Connections
type of electrical connection
•atthemeasurementinputsforvoltage screw-typeterminals screw-typeterminals
•atthemeasurementinputsforcurrent screw-typeterminals screw-typeterminals
Mechanical Design
mounting ushpanel-doormounted ushpanel-doormounted
sizeofPowerMonitoringDevice size96 size96
height 99mm 99mm
width 99mm 99mm
cut-out 91.5mmx91.5mm 91.5mmx91.5mm
depth 52mm 52mm
installation depth 49mm 49mm
netweight 207g 223g
mountingposition Vertical Vertical
Environmental conditions
ambienttemperatureduringoperation
•minimum -10°C -10°C
•maximum 55°C 55°C
ambienttemperatureduringstorage
•minimum -20°C -20°C
•maximum 75°C 75°C
relativehumidityat25°Cwithoutcondensationduringoperation
maximum
85% 85%
installationaltitudeatheightabovesealevelmaximum 2 000 m 2 000 m
degreeofpollution 2 2
IEC Standards
Description Standard
Accuracy IEC61557-12
EMCrequirements IEC61326-1
Degreeofprotectiontest(IP) IEC60529
Safetyrequirements IEC61010-1and
IEC61010-2-030
Certications
SMART7KTdiscretepanelmeterconformstoIEC
standards,IPCelectronicsassemblystandardand RoHS

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SMART 7KT0110 and 7KT0120 Manual
Assembly 
Installation
For installing the meter
Preparethepanelcutoutwithproperdimensionsasshownbelow.
OUTLINE
Dimensions (in mm)
PANEL CUTOUT
Dimensions (in mm)

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SMART 7KT0110 and 7KT0120 Manual
Installation Guidelines
1. Thisequipment,beingbuilt-in-type,normallybecomesapartofmaincontrolpanelandinsuchcasetheterminals
donotremainaccessibletotheenduserafterinstallationandinternalwiring.
2. Conductorsmustnotcomeincontactwiththeinternalcircuitryoftheequipmentorelseitmayleadtoasafety
hazardthatmayinturnendangerlifeorcauseelectricalshocktotheoperator.
3. Circuitbreakerormainsswitchmustbeinstalledbetweenpowersourceandsupplyterminalstofacilitate
power‘ON’or‘OFF’function.Howeverthisswitchorbreakermustbeinstalledinaconvenientpositionnormally
accessible to the operator.
4. Beforedisconnectingthesecondaryoftheexternalcurrenttransformerfromtheequipment,makesurethatthe
currenttransformerisshortcircuitedtoavoidriskofelectricalshockandinjury.
5. Theequipmentshallnotbeinstalledinenvironmentalconditionsotherthanthosementionedinthismanual.
6. Theequipmentdoesnothaveabuilt-in-typefuse.Installationofexternalfuseof0.5A,ClassgGtypeforelectrical
circuitryishighlyrecommended.
7. Removethescratch-guardfromthemeterdisplayduringcommissioningofthepanel.
Wiring Guidelines
1. Topreventtheriskofelectricshock,powersupplytotheequipmentmustbekeptOFFwhiledoingthewiring
arrangement.
2. Wiringshallbedonestrictlyaccordingtotheterminallayout.Conrmthatallconnectionsarecorrect.
3. Useluggedterminals.
4. Toreduceelectromagneticinterferenceuseofwireswithadequateratingsandtwistsofthesameinequalsize
shallbemadewithshortestconnections.
5. LayoutofconnectingcablesshallbeawayfromanyinternalEMIsource.
6. Cableusedforconnectiontopowersource,musthaveacross-sectionof1mm2to2.5mm2.Thesewiresshallhave
currentcarryingcapacityof6A.
7. Coppercableshouldbeused(StrandedorSinglecorecable).
For demounting the meter
Detail B

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SMART 7KT0110 and 7KT0120 Manual
Connection 
3 Phase - 4 Wire
3Ø-4Wire,3CT’sand3PT’s
2 Phase - 3 Wire
2Ø-3Wire,2CT’sand2PT’s
3 Phase - 4 Wire (commonly used)
3Ø-4Wire,3CT’S
3 Phase - 3 Wire
3Ø-3Wire,2CT’sand2PT’s
Typical Wiring Diagram - SMART 7KT0110

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SMART 7KT0110 and 7KT0120 Manual
Terminal Connections - SMART 7KT0110
3 Phase - 4 Wire
3Ø-4Wire,3CT’sand3PT’s
2 Phase - 3 Wire
2Ø-3Wire,2CT’sand2PT’s
Typical Wiring Diagram - SMART 7KT0120
1 Phase - 2 Wire
1Ø-2Wire,1CT’s
Typical Wiring Diagram - SMART 7KT0110