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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