Siemens SMART 7KT Bedienungsanleitung

SMART 7KT0308 Manual

MANUAL

SMART KT

Multifunction meter

7KT0308 (Multi Line LED Class 1)

SMART 7KT power monitoring devices

SMART 7KT0308 Manual

1. Introduction 3

2. Safety precautions 4

3. Technicalspecication 5

4. Installation 7

5. Connection 9

6. Conguration 11

7. Communication 15

8. Maintenance 20

SMART 7KT

Multifunction meter

7KT0308 (Multi Line LED Class 1)

Manual

Index

09/2022

SME7KT030800

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

• 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

Unit 1x nos. Gasket1xnos. SlidingClamp4xnos.

SMART 7KT0308 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.

NOTICE:

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.

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.

SMART 7KT0308 Manual

Technical

speciﬁcation 

7KT0308 (Multi Line LED Class 1)

PowerMonitoringDevicePanelinstrumentforstdelectrical

valuesProtocol:ModbusRTU,MultilineLEDDisplayVaux:95V

to240VACx/1or5A,Class1

Measurements

measuringprocedure

•forvoltagemeasurement True RMS

•forcurrentmeasurement True RMS

typeofmeasuredvaluedetection complete

voltagecurve Sinusoidal or distorted

measurablelinefrequency

•initialvalue 45Hz

•full-scalevalue 65Hz

operatingmodeformeasuredvaluedetectionautomaticlinefrequency

detection

Yes

Supply voltage

designofthepowersupply SMPSpowersupply

typeofvoltageofthesupplyvoltage AC

Degree of protection class

protectionclassIPonthefront IP54

protectionclassIPoftheterminal IP20

Suitability

suitability for operation Installation in stationary panels in closed rooms

Product Functions

product function

•voltagemeasurement Yes

•currentmeasurement Yes

•activepowermeasurement Yes

•reactivepowermeasurement Yes

•apparentpowermeasurement Yes

•powerfactormeasurement Yes

•frequencymeasurement Yes

•apparentenergy/activeenergy/reactiveenergy Yes

•%TotalHarmonicsDistortion(THD) Yes

•Powerdemandmeasurement Yes

Display and operation

designofthedisplay LED

heightofthedisplay 48 mm

widthofthedisplay 62 mm

colorofthebackgroundofthedisplay Black

nationallanguageonthedisplayscreenissupported EN

numberofkeys 4

Fault limits

referenceconditionformeteringaccuracy InaccordancewithIEC61557-12,IEC62053-21,IEC62053-23

formulaforrelativetotalmeasurementinaccuracy

•formeasuredvariablevoltage Class0.5asperIEC61557-12

•formeasuredvariablecurrent Class0.5asperIEC61557-12

•formeasuredvariableapparentpower Class1asperIEC61557-12

•formeasuredvariableactivepower Class1asperIEC61557-12

•formeasuredvariablereactivepower Class2asperIEC61557-12

•formeasuredvariablepowerfactor Class1asperIEC61557-12

•formeasuredvariableactiveenergy Class1asperIEC61557-12andIEC62053-21

•formeasuredvariablereactiveenergy Class2asperIEC61557-12andIEC62053-23

SMART 7KT0308 Manual

IEC Standards

Description Standard

Accuracy IEC61557-12;

IEC62053-21|ActiveEnergy

EMCrequirements IEC61326-1

Degreeofprotectiontest(IP) IEC60529

Safetyrequirements IEC61010-1and

IEC61010-2-030

7KT0308 (Multi Line LED Class 1)

Inputs Outputs

numberofdigitalinputs 1

typeofelectricalconnectionatthedigitalinputs screw-typeterminals

operatingconditionsfordigitalinputsexternalvoltagesupply Yes

inputvoltageatdigitalinputatDCmaximum 30V

inputcurrentatdigitalinputinitialvalueforsignal<1>-recognition 10 mA

Measuring inputs

measurablesupplyvoltagebetweenLandNatACmaximumratedvalue 240V

measurablesupplyvoltagebetweenLandNatAC

•minimum 11V

•maximum 300V

measurablesupplyvoltagebetweenthelineconductorsatACmaximum

ratedvalue

415V

measurablesupplyvoltagebetweenthelineconductorsatAC

•minimum 19V

•maximum 519V

voltagemeasuringrangeextensionwithexternalvoltagetransformers upto500kV

lineconductorsandneutralconductorsinternalresistanceforvoltage

measurement

1.12MΩ

measuringcategoryforvoltagemeasurement CAT III

measurable current 1A/5A

relativemeasurablecurrentatAC

•minimum 1%

•maximum 120%

currentmeasuringrangeextensionwithexternalcurrenttransformers upto10kA

measuringcategoryforcurrentmeasurement CAT III

Connections

type of electrical connection

•atthemeasurementinputsforvoltage screw-typeterminals

•atthemeasurementinputsforcurrent screw-typeterminals

Mechanical Design

mounting ushpanel-doormounted

sizeofPowerMonitoringDevice size96

height 99mm

width 99mm

cutout dimension 91.5x91.5mm

depth 52mm

installation depth 49mm

netweight 247g

mountingposition Vertical

Environmental conditions

ambienttemperatureduringoperation

•minimum -10°C

•maximum 55°C

ambienttemperatureduringstorage

•minimum -20°C

•maximum 75°C

relativehumidityat25°Cwithoutcondensationduringoperation

maximum

85%

installationaltitudeatheightabovesealevelmaximum 2 000 m

degreeofpollution 2

Certications

SMART 7KT multifunction meter conforms to IEC

standards,IPCelectronicsassemblystandardand RoHS

SMART 7KT0308 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)

SMART 7KT0308 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

SMART 7KT0308 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 7KT0308 Manual

Terminal Connections

1 Phase - 2 Wire

1Ø-2Wire,1CT

Typical Wiring Diagram (Continued)

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