Siemens SMART 7KT Manual de usuario
2
SMART 7KT0307 Manual
1. Introduction 3
2. Safety precautions 4
3. Technicalspecication 5
4. Installation 7
5. Connection 9
6. Conguration 11
7. Communication 16
8. Maintenance 18
SMART 7KT
Multifunction meter
7KT0307 (Single Line LED Class 1)
Manual
Index
09/2022
SME7KT030700
3
SMART 7KT0307 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
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.
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SMART 7KT0307 Manual
Safety
precautions
DANGER
Hazardous voltage will cause death or serious injury. Turn off and lock out all
powersupplybeforeworkingonthisdevice.
NOTICE
Installationandmaintenancemustbecarriedoutbyqualied
personnel.
ThisproducthasbeendesignedforenvironmentA.Use
ofthisproductinenvironmentBmaycauseunwanted
electromagnetic disturbances in which case the user may
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. Risk of electric shock.
3. Theequipmentinitsinstalledstatemustnotcomeincloseproximitytoanyheatingsources,oils,steam,
causticvaporsorotherunwantedprocessbyproducts.
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SMART 7KT0307 Manual
Technical
specification
7KT0307 (Single Line LED Class 1)
PowerMonitoringDevicePanelinstrumentforstdelectricalvalues
Protocol:ModbusRTU,SinglelineLEDDisplayVaux:95Vto240VAC
x/1or5A,Class1
Measurements
measuring procedure
•forvoltagemeasurement True RMS
•forcurrentmeasurement True RMS
typeofmeasuredvaluedetection complete
voltagecurve Sinusoidal or distorted
measurablelinefrequency
•initialvalue 45Hz
•full-scalevalue 65Hz
operatingmodeformeasuredvaluedetectionautomaticline
frequencydetection
Yes
Supply voltage
design of the power supply 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
Display and operation
design of the display LED
height of the display 22 mm
width of the display 69mm
color of the background of the display Black
national language on the display screen is supported EN
number of keys 2
Fault limits
reference condition for metering accuracy 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 Class1asperIEC62053-21andIEC61557-12
•formeasuredvariablereactiveenergy Class2asperIEC61557-12andIEC62053-23
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SMART 7KT0307 Manual
IEC Standards
Description Standard
Accuracy IEC61557-12;
IEC62053-21|ActiveEnergy
EMCrequirements IEC61326-1
Degreeofprotectiontest(IP) IEC60529
Safetyrequirements IEC61010-1and
IEC61010-2-030
7KT0307 (Single Line LED Class 1)
Measuring inputs
measurablesupplyvoltagebetweenLandNatACmaximumrated
value
240V
measurablesupplyvoltagebetweenLandNatAC
•minimum 11V
•maximum 300V
measurablesupplyvoltagebetweenthelineconductorsatAC
maximumratedvalue
415V
measurablesupplyvoltagebetweenthelineconductorsatAC
•minimum 19V
•maximum 519V
voltagemeasuringrangeextensionwithexternalvoltage
transformers
upto500kV
line conductors and neutral conductors internal resistance for
voltagemeasurement
1.12MΩ
measuringcategoryforvoltagemeasurement CAT III
measurable current 1A/5A
relativemeasurablecurrentatAC
•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
•atthemeasurementinputsforvoltage screw-typeterminals
•atthemeasurementinputsforcurrent screw-typeterminals
Mechanical Design
mounting ushpanel-doormounted
sizeofPowerMonitoringDevice size96
height 99mm
width 99mm
cut-out 91.5mmx91.5mm
depth 52mm
installation depth 49mm
net weight 228 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
relativehumidityat25°Cwithoutcondensationduringoperation
maximum
85%
installationaltitudeatheightabovesealevelmaximum 2 000 m
degree of pollution 2
Certications
SMART 7KT multifunction meter conforms to IEC
standards,IPCelectronicsassemblystandardand RoHS
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SMART 7KT0307 Manual
Assembly
Installation
For installing the meter
Preparethepanelcutoutwithproperdimensionsasshownbelow.
OUTLINE
Dimensions (in mm)
PANEL CUTOUT
Dimensions (in mm)
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SMART 7KT0307 Manual
Installation Guidelines
1. Thisequipment,beingbuilt-in-type,normallybecomesapartofmaincontrolpanelandinsuchcasetheterminals
do not remain accessible to the end user after installation and internal wiring.
2. Conductorsmustnotcomeincontactwiththeinternalcircuitryoftheequipmentorelseitmayleadtoasafety
hazardthatmayinturnendangerlifeorcauseelectricalshocktotheoperator.
3. Circuit breaker or mains switch must be installed between power source and supply terminals to facilitate
power‘ON’or‘OFF’function.Howeverthisswitchorbreakermustbeinstalledinaconvenientpositionnormally
accessible to the operator.
4. Beforedisconnectingthesecondaryoftheexternalcurrenttransformerfromtheequipment,makesurethatthe
currenttransformerisshortcircuitedtoavoidriskofelectricalshockandinjury.
5. Theequipmentshallnotbeinstalledinenvironmentalconditionsotherthanthosementionedinthismanual.
6. Theequipmentdoesnothaveabuilt-in-typefuse.Installationofexternalfuseof0.5A,ClassgGtypeforelectrical
circuitry is highly recommended.
7. Removethescratch-guardfromthemeterdisplayduringcommissioningofthepanel.
Wiring Guidelines
1. Topreventtheriskofelectricshock,powersupplytotheequipmentmustbekeptOFFwhiledoingthewiring
arrangement.
2. Wiringshallbedonestrictlyaccordingtotheterminallayout.Conrmthatallconnectionsarecorrect.
3. Use lugged terminals.
4. Toreduceelectromagneticinterferenceuseofwireswithadequateratingsandtwistsofthesameinequalsize
shall be made with shortest connections.
5. LayoutofconnectingcablesshallbeawayfromanyinternalEMIsource.
6. Cableusedforconnectiontopowersource,musthaveacross-sectionof1mm2to2.5mm2.Thesewiresshallhave
current carrying capacity of 6A.
7. Copper cable should be used (Stranded or Single core cable).
For demounting the meter
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SMART 7KT0307 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 7KT0307 Manual
Terminal Connections
1 Phase - 2 Wire
1Ø-2Wire,1CT
Typical Wiring Diagram (Continued)
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5
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