Siemens SMART 7KT Manual de usuario
2
SMART 7KT0308 Manual
1. Introduction 3
2. Safety precautions 4
3. Technicalspecication 5
4. Installation 7
5. Connection 9
6. Conguration 11
7. Communication 15
8. Maintenance 20
SMART 7KT
Multifunction meter
7KT0308 (Multi Line LED Class 1)
Manual
Index
09/2022
SME7KT030800
3
SMART 7KT0308 Manual
Introduction
1.1 Purpose of this document
This present manual describes the SMART 7KT multifunction 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
Unit 1x nos. Gasket1xnos. SlidingClamp4xnos.
4
SMART 7KT0308 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.
NOTICE:
ThisproducthasbeendesignedforenvironmentA.UseofthisproductinenvironmentBmaycauseunwanted
electromagneticdisturbancesinwhichcasetheusermayrequiretotakeadequatemitigationmeasures.
Riskofdamage:PleaseensuretheproperisolationofmeterduringtheIR(Meggering)test.
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 7KT0308 Manual
Technical
specification
7KT0308 (Multi Line LED Class 1)
PowerMonitoringDevicePanelinstrumentforstdelectrical
valuesProtocol:ModbusRTU,MultilineLEDDisplayVaux:95V
to240VACx/1or5A,Class1
Measurements
measuringprocedure
•forvoltagemeasurement True RMS
•forcurrentmeasurement True RMS
typeofmeasuredvaluedetection complete
voltagecurve Sinusoidal or distorted
measurablelinefrequency
•initialvalue 45Hz
•full-scalevalue 65Hz
operatingmodeformeasuredvaluedetectionautomaticlinefrequency
detection
Yes
Supply voltage
designofthepowersupply SMPSpowersupply
typeofvoltageofthesupplyvoltage AC
Degree of protection class
protectionclassIPonthefront IP54
protectionclassIPoftheterminal IP20
Suitability
suitability for operation Installation in stationary panels in closed rooms
Product Functions
product function
•voltagemeasurement Yes
•currentmeasurement Yes
•activepowermeasurement Yes
•reactivepowermeasurement Yes
•apparentpowermeasurement Yes
•powerfactormeasurement Yes
•frequencymeasurement Yes
•apparentenergy/activeenergy/reactiveenergy Yes
•%TotalHarmonicsDistortion(THD) Yes
•Powerdemandmeasurement Yes
Display and operation
designofthedisplay LED
heightofthedisplay 48 mm
widthofthedisplay 62 mm
colorofthebackgroundofthedisplay Black
nationallanguageonthedisplayscreenissupported EN
numberofkeys 4
Fault limits
referenceconditionformeteringaccuracy InaccordancewithIEC61557-12,IEC62053-21,IEC62053-23
formulaforrelativetotalmeasurementinaccuracy
•formeasuredvariablevoltage Class0.5asperIEC61557-12
•formeasuredvariablecurrent Class0.5asperIEC61557-12
•formeasuredvariableapparentpower Class1asperIEC61557-12
•formeasuredvariableactivepower Class1asperIEC61557-12
•formeasuredvariablereactivepower Class2asperIEC61557-12
•formeasuredvariablepowerfactor Class1asperIEC61557-12
•formeasuredvariableactiveenergy Class1asperIEC61557-12andIEC62053-21
•formeasuredvariablereactiveenergy Class2asperIEC61557-12andIEC62053-23
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SMART 7KT0308 Manual
IEC Standards
Description Standard
Accuracy IEC61557-12;
IEC62053-21|ActiveEnergy
EMCrequirements IEC61326-1
Degreeofprotectiontest(IP) IEC60529
Safetyrequirements IEC61010-1and
IEC61010-2-030
7KT0308 (Multi Line LED Class 1)
Inputs Outputs
numberofdigitalinputs 1
typeofelectricalconnectionatthedigitalinputs screw-typeterminals
operatingconditionsfordigitalinputsexternalvoltagesupply Yes
inputvoltageatdigitalinputatDCmaximum 30V
inputcurrentatdigitalinputinitialvalueforsignal<1>-recognition 10 mA
Measuring inputs
measurablesupplyvoltagebetweenLandNatACmaximumratedvalue 240V
measurablesupplyvoltagebetweenLandNatAC
•minimum 11V
•maximum 300V
measurablesupplyvoltagebetweenthelineconductorsatACmaximum
ratedvalue
415V
measurablesupplyvoltagebetweenthelineconductorsatAC
•minimum 19V
•maximum 519V
voltagemeasuringrangeextensionwithexternalvoltagetransformers upto500kV
lineconductorsandneutralconductorsinternalresistanceforvoltage
measurement
1.12MΩ
measuringcategoryforvoltagemeasurement CAT III
measurable current 1A/5A
relativemeasurablecurrentatAC
•minimum 1%
•maximum 120%
currentmeasuringrangeextensionwithexternalcurrenttransformers upto10kA
measuringcategoryforcurrentmeasurement CAT III
Connections
type of electrical connection
•atthemeasurementinputsforvoltage screw-typeterminals
•atthemeasurementinputsforcurrent screw-typeterminals
Mechanical Design
mounting ushpanel-doormounted
sizeofPowerMonitoringDevice size96
height 99mm
width 99mm
cutout dimension 91.5x91.5mm
depth 52mm
installation depth 49mm
netweight 247g
mountingposition Vertical
Environmental conditions
ambienttemperatureduringoperation
•minimum -10°C
•maximum 55°C
ambienttemperatureduringstorage
•minimum -20°C
•maximum 75°C
relativehumidityat25°Cwithoutcondensationduringoperation
maximum
85%
installationaltitudeatheightabovesealevelmaximum 2 000 m
degreeofpollution 2
Certications
SMART 7KT multifunction meter conforms to IEC
standards,IPCelectronicsassemblystandardand RoHS
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SMART 7KT0308 Manual
Assembly
Installation
For installing the meter
Preparethepanelcutoutwithproperdimensionsasshownbelow.
OUTLINE
Dimensions (in mm)
PANEL CUTOUT
Dimensions (in mm)
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SMART 7KT0308 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
9
SMART 7KT0308 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
10
SMART 7KT0308 Manual
Terminal Connections
1 Phase - 2 Wire
1Ø-2Wire,1CT
Typical Wiring Diagram (Continued)
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