KYORITSU KEW3125A - Measurement - DAR and Selection; DAR Measurement Explained; Selecting DAR Measurement Time

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todiagnosistheinsulationofcables.
PI=
Insulationresistance
(10minafterastartoftest)
Insulationresistance
(1minafterastartoftest)
PI 4ormore 4-2 2.0-1.0 1.0orless
Criteria Best Good Warning Bad
2. DAR - Dielectric Absorption Ratio
DARmeasurementisalmostthesametoPImeasurementin
asensethattheytestthetimecourseofinsulation.Theonly
differenceisthatDARmeasurementcangetresultfasterthan
theother.
DAR=
Insulationresistance
(1minafterastartoftest)
Insulationresistance
(15or30secminafterastartoftest)
*1
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DAR 1.4ormore 1.25-1.0 1.0orless
Criteria Best Good Bad
Note1:DARtimeisselectable:15or30sec.
Howtoselect:
1)KeeptheDISPbuttonpresseddownandrotatetheRange
switchtopoweronKEW3125A/3025A.(DARmarkstarts
blinking.)
2)Press the DISP button to switch 15 sec and 30 sec
displayed at the lower left on the LCD. Select a desired
one.
3)Thenpowerofftheinstrument.TheselectedDARtimewill
besavedandnotbecleared evenwhentheinstrumentis
powered off. Toconfirmthe selectedtime, follow the step
(1).
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