Siemens SMART 7KT0311 - Inputs, Outputs, and Measuring Inputs; Mechanical Design and Environmental Conditions

6
SMART 7KT0311 Manual
7KT0311 (LCD Class 0.5s)
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
numberofdigitaloutputs 1
typeofswitchingoutput Unidirectional
digitaloutputversion switchingorpulseoutputfunction
operatingvoltageasoutputvoltageatDCmaximumpermissible 30V
typeofelectricalconnectionatthedigitaloutputs screw-typeterminals
outputcurrentatthedigitaloutputsatDClimitedto100msmaximum 130 mA
internalresistanceatthedigitaloutputs 55Ω
standard for pulse emitter accordingtoIEC62053-31
pulse duration
•initialvalue 100 ms
•full-scalevalue 2 s
adjustable time period minimum 100 ms
switchingfrequencyatdigitaloutputmaximum 17 Hz
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 96 mm
width 96 mm
Cut-out 91.5mmx91.5mm
depth 55 mm
installation depth 51 mm
netweight 325g
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