Siemens SMART 7KT Manual de usuario

SMART 7KT0307 Manual

MANUAL

SMART KT

Multifunction meter

7KT0307 (Single Line LED Class 1)

SMART 7KT power monitoring devices

SMART 7KT0307 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 16

8. Maintenance 18

SMART 7KT

Multifunction meter

7KT0307 (Single Line LED Class 1)

Manual

Index

09/2022

SME7KT030700

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

• 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 7KT0307 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 7KT0307 Manual

Technical

speciﬁcation 

7KT0307 (Single Line LED Class 1)

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

Protocol:ModbusRTU,Single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

Display and operation

design of the display LED

height of the display 22 mm

width of the display 69mm

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 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62053-21andIEC61557-12

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

SMART 7KT0307 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

7KT0307 (Single Line LED Class 1)

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

cut-out 91.5mmx91.5mm

depth 52mm

installation depth 49mm

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

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 7KT0307 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 7KT0307 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 7KT0307 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 7KT0307 Manual

Terminal Connections

1 Phase - 2 Wire

1Ø-2Wire,1CT

Typical Wiring Diagram (Continued)

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