Siemens SMART 7KT0311 - Technical Specifications; Measurement and Supply Specifications; Product Functions and Operation

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SMART 7KT0311 Manual
Technical
specification

7KT0311 (LCD Class 0.5s)
PowerMonitoringDevicepanelinstrumentforstandardelectrical
values;Protocol:ModbusRTU;LCDdisplayVaux:95Vto240VAC
x/1or5A;Class0.5s
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 IP65
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)measurementforvoltageand
current
Yes
•powerdemandmeasurement Yes
Display and operation
designofthedisplay LCDwithgraphicaldisplayofcurrentloading
heightofthedisplay 60 mm
widthofthedisplay 60 mm
colorofthebackgroundofthedisplay White
time-controlledreductionoftheilluminanceofdisplaybacklightpossible Yes. up to 2 Hrs. (7200 sec)
languageonthedisplayscreenissupported EN
numberofkeys 4
Accuracy
referenceconditionformeteringaccuracy InaccordancewithIEC61557-12,IEC62053-22,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0.5asperIEC61557-12andClass0.5sasperIEC62053-22
•formeasuredvariablereactiveenergy Class2asperIEC61557-12andIEC62053-23