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Last Post 04/28/2011 12:27 PM by  Bud Wycoff
CRD5170 How to calculate Power field for 3-phase
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Bud Wycoff
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Posts:2


--
04/28/2011 11:03 AM
    Transducer Name:
    !04CRD5170-130-30

    When requesting "all data" from this DataStream transducer
    I receive the following data:
    >+0.8750+0.5047+0.8811+0.5050+0.0000+0.0002+0.2543+0.1501+0.666759.973


    From this data I calculate each field.
    Voltage1 = 130*0.8750 =113.75
    Current1 = 30*0.5047 = 15.141
    Voltage2 = 130*0.8811 =114.543
    Current2 = 30*0.5050 = 15.15
    Voltage3 = 130*0.0000 = 0.0000
    Current3 = 30*0.0002 = 0.0006

    Power = 30*130*0.2543 =991.77

    When I calc watts for the info (P=E*I) it's not even close to
    the power value.

    Phase1(113.75 * 15.141) = 1722
    Phase2(114.543 * 15.15 ) = 1735
    Phase3( 0 * .0002 ) = 0.006
    Power from above = 991.77

    *** What am I doing wrong? ***


    Thanks in advance,
    Bud


    Bud Wycoff
    New Member
    New Member
    Posts:2


    --
    04/28/2011 12:27 PM
    I found the solution, calculate the power correctly for three-phase...

    (e.g. P=E*I*1.732)
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