XITRON XT2640 - Analysis Specifications; Integration Specifications; Harmonic Analysis Specifications; Spectrum Analysis Specifications

XT2640OperatingManual 13July2016 Page181of187
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30 ANALYSISSPECIFICATIONS
Specificationsarevalidunderthefollowingconditions‐
 Allspecificationsarevalidfollowinga20minutewarm‐upperiodafterturningpowerONintheXT2640,whenoperated
fromthespecifiedsourceofpowerandwithinthespecifiedenvironmentalconditions.
 AllspecificationsarevalidforthelifetimeoftheXT2640.
Note:
Allpercentagesare%ofreadingunlessotherwisedescribed.
30.1 INTEGRATIONSPECIFICATIONS
StartDelayTime Zeroto99days,99hours,99minutes,99seconds(1secondresolution)
0.01%+8msmaximumerror
IntegrationTime Manual(unrestrictedperiodoftime),or1secondto99days,99hours,99minutes,99seconds
0.01%+1msmaximumerror
MaximumDataError (0.01%+1ms)(notforintegratedaveragedata)+(0.03/measurementperiodinseconds)%peryear
30.2 HARMONICANALYSISSPECIFICATIONS
ThissectionisnotapplicablewhenconfiguredforEN61000‐3‐2or‐12modes.Inthosemodesharmonicanalysisisperformedtothe
requirementsofEN61000‐4‐7:2002+A1:2009withcorrigendaAug.2004,May2005andNov.2011(seesection18.1.5).
Method DFTperformedateachfrequencyonsamesetofsampledsignals(thereisnodiscontinuitythroughout
theanalysedfrequencyrange)
Window F>(2/measurementperiod):Hann(alsocalledHanning)
Otherwise:Rectangular
MaximumHarmonic Thesmallerof‐
a)Afrequencyof435kHz(Wtypechannels)or115kHz(otherwise)
b)500
th
(harmonicsoverthe100
th
requiresoptionH500)
c)HARMONICSsetting
d)IfBANDWIDTHsettoUSER:0.5*setting/fundamentalfrequency
HarmonicBandwidth Nominallythegreaterof‐
a)Thesmalleroffundamentalfrequencyor2/(LF/PERIODmeasurementperiod)
b)IfFUNDsettoAVIONICS:20Hz
c)(FundamentalFrequency*MaximumHarmonic/2250)
MeasurementPeriod Nominally(1/HarmonicBandwidth)
UpdateInterval Nominallythegreaterof‐
a)LF/PERIODmeasurementperiod
b)HarmonicMeasurementPeriod(fromabove)
c)0.25msxΣ(MaximumHarmonicforeachchannelconfiguredforharmonics)
DataAvailable Volts,AmpsandWattsamplitudesforeachconfiguredharmonic
VoltsandAmpsasapercentageofthefundamentalofthesamesignal
VoltsandAmpsTHDasapercentageofthefundamentalofthesamesignal
VoltsandAmpsTHDasapercentageoftheAC+DCamplitudeofthesamesignal
VandAPhaseoffundamentalrelativetothevoltagefundamentalofthelowestnumberedchannelinthe
VPA
VandAPhaseofeachnon‐fundamentalharmonicrelativetothefundamentalofthesamesignal
THC(TotalHarmonicCurrent,seesection11.10)
POHC(PartialOddHarmonicCurrent,seesection11.10)
PWHC((PartialWeightedHarmonicCurrent,seesection11.10)
Accuracy SeerelevantVoltage,CurrentandWattsaccuracyspecifications
30.3 SPECTRUMANALYSISSPECIFICATIONS
Method DFTperformedateachfrequencyonsamesetofsampledsignals(thereisnodiscontinuitythroughout
theanalysedfrequencyrange)
Window Hann(alsocalledHanning)
FrequencyResolution 0.01Hzto1kHz
MeasurementPeriod Nominally(1/FrequencyResolution)
MaximumFrequency Minimumis100xFrequencyResolution
Maximumisthelowestofnominally‐
a)16384xFrequencyResolution(undersomecircumstancesaslowas8192xFrequencyResolution)
b)435kHz(Wtypechannels)or115kHz(otherwise)
DataAvailable Volts,AmpsandWattsamplitudesforeachconfiguredspectrumfrequency
Accuracy SeerelevantVoltage,CurrentandWattsaccuracyspecifications