Siemens 7KT0310 - Page 6

6
SMART 7KT0310 Manual
Measured variables
Measured variable On display On communication
VoltageV
L-N
,V
L-L
● ●
Current
● ●
Neutralcurrent
● ●
Frequency
● ●
Powerfactor
● ●
Activepower
● ●
Reactivepower
● ●
Apparentpower
● ●
Activeenergy(Import,Export,Total)
● ●
Reactiveenergy(Import,Export,Total)
● ●
Apparentenergy
● ●
Maxdemand(current)oversetdemandperiod
● ●
Maxdemand(active,reactiveandapparentpower)oversetdemand
period
● ●
Phaseangleof3phases
● –
THD%(Current)
● ●
THD%(Voltage)
● ●
Individualharmonics(Current)
– ●
Individualharmonics(Voltage)
– ●
–:Notthere
●:Available
Measuring accuracy
Measured variable Error limits
VoltageV
L-N
0.5%ofFullscale(300VAC)
VoltageV
L-L
Fullscale0.5%
Current PhaseCurrent:0.5%offullscale
Neutralcurrent:1%offullscale
Frequency 0.1%
ForL-NVoltage>20V,
ForL-LVoltage>35V
Powerfactor 0.01Digit
Activepower 1%
Reactivepower 1%
Apparentpower 1%
Activeenergy Class1(asperIEC62053-21)
Reactiveenergy Class2(asperIEC62053-23)
Apparentenergy 1%
Phaseangleof3phases 1%
THD(Current) 1%
THD(Voltage) 1%
Harmonics(Current) 1%
Harmonics(Voltage) 1%
Whenmeasuringonexternalcurrenttransformersorvoltage
transformers,theaccuracyofthemeasurementdependsonthe
qualityofthetransformer.
IEC Standards
Description Standard
Energyaccuracy IEC62053-21|Activeenergy
EMCrequirements IEC61326-1:2012
Degreeofprotectiontest(IP) IEC60529
Safetyrequirements IEC61010-1:2010and
IEC61010-2-030:2010
Vibrationandmechanicalshock IEC62052-11
Certications
SMART7KTmultifunctionmeterconformstoIEC
standards,IPCelectronicsassemblystandardand
RoHS