XITRON XT2640 - Page 104

XT2640OperatingManual 13July2016 Page104of187
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19 MEASURINGELECTRICALPOWERTOEN60034‐2‐1 REQUIREMENTS
StandardEN60034‐2‐1:2014clause5.5.2requiresthatdirectmeasurementsofmotorelectricalpowertothatstandardhave0.2%or
betteraccuracy.
TheXT2640iscapableofperformingsuchmeasurementsoverawiderangeofvoltagesandcurrents,eitherwithbandwidthlimiting
ornot.
GenerallyyoushouldconfiguretheXT2640formeasurementswhicharesuitableforthemotorbeingtested;thefollowingMEAS
CONFIGsettingsarerecommended‐
LF/PERIODsettingof10Hz/0.3sor20Hz/0.1s
FUNDsettingofMAINS(foradrivefrequencyintherange45to65Hzandanon‐PWMdrivenmotor)orVOLTAGE(foranon‐
PWMdrivenmotordrivefrequencywithintherangefromtheLF/PERIODsettinguptoalimitdefinedbyyou)orCURRENT
(foraPWMdrivenmotordrivefrequencywithintherangefromtheLF/PERIODsettinguptoalimitdefinedbyyou).
ThehighestfrequencysettingwhenusingtheVOLTAGEorCURRENTsettingsshouldbejustslightlyabovethemaximum
expectedmotordriveormodulationfrequency.
BANDWIDTHshouldbesetforAUTO‐TRACKorUNFILTEREDasdesired,howevertherecommendationsforPWMdriven
motorscontainedinsection16shouldbefollowedforthosesituations.
HARMONICSisgenerallynotneeded,sosettingthisto0or1isrecommended.
TheotherMEASCONFIGsettingsarenotimportantforbestperformancesomaybesetaccordingtotherecommendationsof
section12.4.
ToachievethenecessaryaccuracytheuseoftheAtypechannels,withtheHcurrentoptionisrecommendedforawiderangeof
voltagesandcurrents.Howeverasmallerrangeofvoltagesandcurrentsmaybeachievedwithotherchanneltypesand/orcurrent
options.ThechartsshownbelowshowtheallowablerangeofvoltagesandcurrentswhichcanbemeasuredwithanAHchannelto
withintherequirementsofEN60034‐2‐1,bothwithandwithoutbandwidthrestrictionemployed.
Notethattheallowablerangeiscontinuous,therearenoareascontainedwithinitwhicharenotapplicable,andthesechartsassume
a2yearrecalibrationintervalfortheXT2640.Thesechartshavebeengeneratedusingtheaccuracyspecificationscontainedin
section27.Forchartsforotherchanneltypesorcurrentoptions,orindifferentconditions,pleasecontactXiTRON.

0.01
0.10
1.00
10.00
1101001,000
C
U
R
R
E
N
T
VOLTAGE
EN60034‐2‐1OperatingAreaforXT2640withAHchannels
10or20Hzto65Hz,Unfiltered
Any voltage or current within this bounded area
meets the 0.2% power measurement accuracy
requirement.