Phase rotation tests – KYORITSU 4140 User Manual
Page 24
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8. Phase Rotation Tests
1.OperatethePowerswitchandturnontheinstrument.Pressthe
PHASEROTATIONfunctionswitch.
2.InserttheTestLeadsintotheinstrument.(Fig.8-1)
Fig.8-1
3.Connecteachtestleadstoacircuit.(Fig.8-2)
Fig8-2
4.Resultsaredisplayedasfollows.
CorrectphasesequenceReversedphasesequence
Fig.8-3 Fig.8-4
●Whenamessage“no”or“---”isdisplayed,thecircuitmay
not be a 3-phase system or a wrong connection may have been
made.Checkthecircuitandtheconnection.
●Presence of Harmonics in measurement voltages, such as an
inverter power supply, may influence the measured results.
L1
L3
L2
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