FLIR CM85 - 5.8.2 Three-Phase Power Measurements; 5.8.2.1 Three-Phase Three-Wire Balanced;Unbalanced

FLIRCM85USERMANUALDocumentIdentifier:CM85‐en‐US_AB
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5.8.2Three‐PhasePowerMeasurements
5.8.2.1Three‐PhaseThree‐WireBalanced/Unbalanced
Thepowerofathree‐phasethree‐wiredeltaconfigurationismeasuredintwosteps,in
accordancewithFigure5.4.Thetotalpoweristhesumofthetwomeasurements:W=W
1

+W
2
.

Figure5.4Three‐phasethree‐wiremeasurements
1. SetthefunctionswitchtotheWposition.
2.
Ensurethatthemeterissettoactivepowermeasurement.Ifthe orthe 
indicatorisdisplayed,presstheMODEbuttonrepeatedlyuntilnoneofthese
indicatorsaredisplayed.
3.
Taketwomeasurementsoftheactivepower,inaccordancewithFigure5.4.
4.
Tomeasureanddisplaythepowerfactor,presstheMODEbuttonrepeatedlyuntilthe
indicatorisdisplayed.
5.
Readthepowerfactorvalueonthedisplay.
 Ifthevalueisdisplayedwithoutasign,thephaseofthecurrentsignalislagging
behindthevoltagesignal(inductiveload).
 Ifthevalueisdisplayedwithaminussign(–),thephaseofthecurrentsignalis
leadingthevoltagesignal(capacitiveload).
6. Toreturntoactivepowermeasurements,presstheMODEbuttonrepeatedlyuntil
neitherthe
northe indicatorisdisplayed.