Extech Instruments MG310 - Specialized Insulation Tests; Polarization Index (PI) Testing; Dielectric Absorption Ratio (DAR) Testing

7 MG310-en-GB_V1.0 12/15
POLARIZATIONINDEX(PI)TESTING
ReadandunderstandalloperationsandsafetyinformationcontainedintheInsulationResistance
(IR)measurementsectionaboveandtheSafetysectionbeforecontinuing.
1. Connectthemetertothedeviceundertestasshowninthetestsectionabove.
2. Selectthedesiredoutputtestvoltageusingtherotaryfunctionswitch(250/500/1000V).
3. UsethePI/DARbuttontoaccessthePItestmode.
4. ThedisplaywillshowthePIiconwhenthePImodeissuccessfullyaccessed.
5. Thetwotesttimes(Time1andTime2)willalternatelyshowontheupperright.
6. Thefirsttestwillrunfor1
minute(Time1)whentheTESTbuttonispressed.Ifthetestfails
(noisdisplayed)thesecondtestwillnotautomaticallyrunandtestingisnowcomplete.If
thetestpasses(YESisdisplayed)theTime2testwillrunfor10minutes.
7. Thetestresultwilldisplayafterthe
10‐minuteTime2interval
8. PresstheTESTbuttontostopthetestandtobegindischargingthedeviceundertest.

DIELECTRICABSORPTIONRATIO(DAR)TESTING
ReadandunderstandalloperationsandsafetyinformationintheInsulationResistance(IR)
measurementsectionaboveandintheSafetysectionbeforecontinuing.
1. ConnectthemetertothedeviceundertestasshownintheIRtestsectionabove.
2. Selectthedesiredoutputtestvoltageusingtherotaryfunctionswitch(250/500/1000V).
3. UsethePI/DARbuttontoaccesstheDARtestmode.
4. ThedisplaywillshowtheDARiconwhentheDARmodeissuccessfullyaccessed.
5. Thefirsttwotesttimes(Time1andTime2)willalternatelyshowontheupperright.
6. Thefirsttestwillrun
for30seconds(Time1)whentheTESTbuttonispressed.Ifthetest
fails(noisdisplayed)thesecondtestwillnotautomaticallyrunandtestingisnowcomplete.
Ifthetestpasses(YESisdisplayed)theTime2testwillrunfor1minute.Thetestresultwill
displayafterthe1‐minuteTime2interval
7. ToaccessthesecondsetofTime1andTime2testspresstheDARbuttonthreetimesand
repeatthesamestepsaboveinthissection.Forthe2
nd
setofteststhetimesare15
seconds(Time1)and1minute(Time2).
8. WhencompletedpresstheTESTbuttontostopthetestandtobegindischarging