Siemens SMART 7KT User manual
2
SMART 7KT0110 and 7KT0120 Manual
1. Introduction 3
2. Safety precautions 4
3. Technicalspecication 5
4. Installation 7
5. Connection 9
6. Conguration 12
7. Maintenance 16
SMART 7KT
Discrete Panel Meter
7KT0110 (VA meter) and
7KT0120 (VAF Meter)
Manual
Index
09/2022
SME7KT01X001
3
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
• Plantoperators
• Commissioningengineers
• Serviceandmaintenancepersonnel
1.2 Required basic knowledge
Ageneralknowledgeoftheeldofelectricalengineeringisrequiredtounderstandthismanual.
Knowledgeoftherelevantsafetyregulationsandstandardsisrequiredforinstallingandconnectingthedevice.
1.3 Components of the product
The carton for the products contain
1 SMART 7KT meter
1setofclamps(4clamps)formountingthemeteronthepaneldoor
1Gasket
1Operatinginstruction
7KT0110
Unit 1x nos. Gasket1xnos. SlidingClamp4xnos.
7KT0120
Unit 1x nos. Gasket1xnos. SlidingClamp4xnos.
4
SMART 7KT0110 and 7KT0120 Manual
Safety
precautions
DANGER
Hazardous voltage will cause death or serious injury.Turnoffandlockoutall
powersupplybeforeworkingonthisdevice.
NOTICE
Installationandmaintenancemustbecarriedoutbyqualied
personnel.
ThisproducthasbeendesignedforenvironmentA.Use
ofthisproductinenvironmentBmaycauseunwanted
electromagneticdisturbancesinwhichcasetheusermay
requiretotakeadequatemitigationmeasures.
Risk of damage: Please ensure the proper isolation of meter
during the IR (Meggering) test.
Allsafetyrelatedcodications,symbolsandinstructionsthatappearinthisoperatingmanualorontheequipment
mustbestrictlyfollowedtoensurethesafetyoftheoperatingpersonnelaswellastheinstrument.Iftheequipmentis
notusedinamannerspeciedbythemanufactureritmightimpairtheprotectionprovidedbytheequipment.
Donotusetheequipmentifthereisanymechanicaldamage.
Ensurethattheequipmentissuppliedwithcorrectvoltage.
CAUTION:
1. Read complete instructions prior to installation and operation of the unit.
2. Riskofelectricshock.
3. Theequipmentinitsinstalledstatemustnotcomeincloseproximitytoanyheatingsources,oils,steam,
causticvaporsorotherunwantedprocessbyproducts.
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SMART 7KT0110 and 7KT0120 Manual
Technical
specification
7KT0110 (VA meter) 7KT0120 (VAF meter)
PowerMonitoringDevicePanel
instrumentforvoltageand
currentLEDdisplayVaux:95Vto
240VACx/1or5A,Class1
PowerMonitoringDevicePanel
instrumentforvoltage,current
andfrequencyLEDdisplayVaux:
95Vto240VACx/1or5A,
Class1
Measurements
measuringprocedure
•forvoltagemeasurement True RMS True RMS
•forcurrentmeasurement True RMS True RMS
typeofmeasuredvaluedetection complete complete
voltagecurve Sinusoidal or distorted Sinusoidal or distorted
measurablelinefrequency
•initialvalue 45Hz 45Hz
•full-scalevalue 65Hz 65Hz
operatingmodeformeasuredvaluedetectionautomaticline
frequencydetection
–Yes
Supply voltage
designofthepowersupply SMPSpowersupply SMPSpowersupply
typeofvoltageofthesupplyvoltage 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
•voltagemeasurement Yes Yes
•currentmeasurement Yes Yes
•frequencymeasurement –Yes
Display and operation
designofthedisplay LED LED
heightofthedisplay 39mm 50mm
widthofthedisplay 40.5mm 45.4mm
colorofthebackgroundofthedisplay Black Black
nationallanguageonthedisplayscreenissupported EN EN
numberofkeys 2 2
Fault limits
referenceconditionformeteringaccuracy InaccordancewithIEC61557-12 InaccordancewithIEC61557-12
formulaforrelativetotalmeasurementinaccuracy
•formeasuredvariablevoltage Class1asperIEC61557-12 Class1asperIEC61557-12
•formeasuredvariablecurrent Class1asperIEC61557-12 Class1asperIEC61557-12
•formeasuredvariablefrequency –Class0.1asperIEC61557-12
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SMART 7KT0110 and 7KT0120 Manual
7KT0110 (VA meter) 7KT0120 (VAF meter)
Measuring inputs
measurablesupplyvoltagebetweenLandNatACmaximumrated
value
240 V 240 V
measurablesupplyvoltagebetweenLandNatAC
•minimum 11 V 11 V
•maximum 300 V 300 V
measurablesupplyvoltagebetweenthelineconductorsatAC
maximumratedvalue
415V 415V
measurablesupplyvoltagebetweenthelineconductorsatAC
•minimum 19V 19V
•maximum 519V 519V
voltagemeasuringrangeextensionwithexternalvoltagetransformers upto500kV upto500kV
lineconductorsandneutralconductorsinternalresistanceforvoltage
measurement
1.12MΩ 1.12MΩ
measuringcategoryforvoltagemeasurement CATIII CATIII
measurable current 1A/5A 1A/5A
relativemeasurablecurrentatAC
•minimum 1 % 1 %
•maximum 120 % 120 %
currentmeasuringrangeextensionwithexternalcurrenttransformers Upto10kA Upto10kA
measuringcategoryforcurrentmeasurement CATIII CATIII
measurablelinefrequency –45...65Hz
Connections
type of electrical connection
•atthemeasurementinputsforvoltage screw-typeterminals screw-typeterminals
•atthemeasurementinputsforcurrent screw-typeterminals screw-typeterminals
Mechanical Design
mounting ushpanel-doormounted ushpanel-doormounted
sizeofPowerMonitoringDevice size96 size96
height 99mm 99mm
width 99mm 99mm
cut-out 91.5mmx91.5mm 91.5mmx91.5mm
depth 52mm 52mm
installation depth 49mm 49mm
netweight 207g 223g
mountingposition Vertical Vertical
Environmental conditions
ambienttemperatureduringoperation
•minimum -10°C -10°C
•maximum 55°C 55°C
ambienttemperatureduringstorage
•minimum -20°C -20°C
•maximum 75°C 75°C
relativehumidityat25°Cwithoutcondensationduringoperation
maximum
85% 85%
installationaltitudeatheightabovesealevelmaximum 2 000 m 2 000 m
degreeofpollution 2 2
IEC Standards
Description Standard
Accuracy IEC61557-12
EMCrequirements IEC61326-1
Degreeofprotectiontest(IP) IEC60529
Safetyrequirements IEC61010-1and
IEC61010-2-030
Certications
SMART7KTdiscretepanelmeterconformstoIEC
standards,IPCelectronicsassemblystandardand RoHS
7
SMART 7KT0110 and 7KT0120 Manual
Assembly
Installation
For installing the meter
Preparethepanelcutoutwithproperdimensionsasshownbelow.
OUTLINE
Dimensions (in mm)
PANEL CUTOUT
Dimensions (in mm)
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SMART 7KT0110 and 7KT0120 Manual
Installation Guidelines
1. Thisequipment,beingbuilt-in-type,normallybecomesapartofmaincontrolpanelandinsuchcasetheterminals
donotremainaccessibletotheenduserafterinstallationandinternalwiring.
2. Conductorsmustnotcomeincontactwiththeinternalcircuitryoftheequipmentorelseitmayleadtoasafety
hazardthatmayinturnendangerlifeorcauseelectricalshocktotheoperator.
3. Circuitbreakerormainsswitchmustbeinstalledbetweenpowersourceandsupplyterminalstofacilitate
power‘ON’or‘OFF’function.Howeverthisswitchorbreakermustbeinstalledinaconvenientpositionnormally
accessible to the operator.
4. Beforedisconnectingthesecondaryoftheexternalcurrenttransformerfromtheequipment,makesurethatthe
currenttransformerisshortcircuitedtoavoidriskofelectricalshockandinjury.
5. Theequipmentshallnotbeinstalledinenvironmentalconditionsotherthanthosementionedinthismanual.
6. Theequipmentdoesnothaveabuilt-in-typefuse.Installationofexternalfuseof0.5A,ClassgGtypeforelectrical
circuitryishighlyrecommended.
7. Removethescratch-guardfromthemeterdisplayduringcommissioningofthepanel.
Wiring Guidelines
1. Topreventtheriskofelectricshock,powersupplytotheequipmentmustbekeptOFFwhiledoingthewiring
arrangement.
2. Wiringshallbedonestrictlyaccordingtotheterminallayout.Conrmthatallconnectionsarecorrect.
3. Useluggedterminals.
4. Toreduceelectromagneticinterferenceuseofwireswithadequateratingsandtwistsofthesameinequalsize
shallbemadewithshortestconnections.
5. LayoutofconnectingcablesshallbeawayfromanyinternalEMIsource.
6. Cableusedforconnectiontopowersource,musthaveacross-sectionof1mm2to2.5mm2.Thesewiresshallhave
currentcarryingcapacityof6A.
7. Coppercableshouldbeused(StrandedorSinglecorecable).
For demounting the meter
Detail B
9
SMART 7KT0110 and 7KT0120 Manual
Connection
3 Phase - 4 Wire
3Ø-4Wire,3CT’sand3PT’s
2 Phase - 3 Wire
2Ø-3Wire,2CT’sand2PT’s
3 Phase - 4 Wire (commonly used)
3Ø-4Wire,3CT’S
3 Phase - 3 Wire
3Ø-3Wire,2CT’sand2PT’s
Typical Wiring Diagram - SMART 7KT0110
10
SMART 7KT0110 and 7KT0120 Manual
Terminal Connections - SMART 7KT0110
3 Phase - 4 Wire
3Ø-4Wire,3CT’sand3PT’s
2 Phase - 3 Wire
2Ø-3Wire,2CT’sand2PT’s
Typical Wiring Diagram - SMART 7KT0120
1 Phase - 2 Wire
1Ø-2Wire,1CT’s
Typical Wiring Diagram - SMART 7KT0110
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