Extech Instruments MG310 Manuel utilisateur

USER MANUAL

InsulationResistanceTester

WithContinuityandACVoltagemodes

ModelMG310

2 MG310-en-GB_V1.0 12/15

Introduction

ThankyouforselectingtheMG310InsulationResistanceTester.Thismetermeasuresinsulation

resistance,continuity,andACVoltage.TheMG310isCATIII600VACandidealformeasuring

insulatingmaterialsandelectricalequipmentsuchastransformers,cables,switches,and

appliances.Applicationsincludemaintenance,testing,andinspection.Properuseandcareofthis

meterwillprovidemanyyearsofreliableservice.



Safety

ThistesterisdesignedandmanufacturedincompliancewiththeIEC61010standard.Thisuser

manualincludesdetailedinformationrelatedtothesafeoperationandcareofthisinstrument.

Pleasereadcarefullybeforeusingtheinstrument.

Pleasereadandunderstandthisusermanualbeforeusingthedevice.

Alwaysusethedeviceasspecifiedintheusermanual,retainthemanualforfutureuseand

checkthewww.extech.comwebsitefornewerversionsoftheusermanual.

Misuseofthisdevicemaycausepersonalinjuryanddamagetotheinstrumentand

connectedequipment.

Thissymbolontheinstrumentindicatesthatforsafeoperationtheusermustusethe

instrumentasdescribedintheusermanual.

Dangericons:Alerttoconditionsandactionsthatmaycauseseriousorfatalinjury.

Warningicons:Alerttheusertothepotentialofelectricshock.

Cautionicons:Alerttoconditionsandactionsthatmaycausedamagetotheinstrumentor

thatmayaffecttheinstrumentaccuracy.



Danger

Donotmeasurecircuitswithvoltagesgreaterthan750VAC.

Donotusethisinstrumentinareaswhereflammableconditionsexist.

Donotusethisinstrumentinareasofhighhumidity.Donotoperatethisinstrumentwith

wethands.

Donottouchconductivesectionsofthetestleadswhentakingmeasurements.

WhentestleadsareshortedandconnectedtotheinstrumentsdonotpresstheTESTbutton.

Donotopenthebatterycoverduringtests.

Donottouchthetestedcircuitsorwiresduringinsulationmeasurements.



3 MG310-en-GB_V1.0 12/15



Warning

Iftheinstrumentexhibitsfaultyoperationpleasediscontinueuseandhavetheinstrument

serviced.

Beextremelycarefulwhentheinstrumentsismeasuringvoltagesthatexceed33VACrms,

46.7VACrms,or70VDC;electricalshockispossible.

Whenhighresistancemeasurementsareconducted,strayelectricalincircuitsundertest

mustbedischarged.

Donotreplacethebatterieswhentheinstrumentiswet.

Ensuresecureconnectionswiththetestleadsandtheinstrument’stestleadterminals.

Shuttheinstrumentdownbeforeopeningthebatterycompartment.



Caution

Circuitsundertestmustbecompletelydischargedandisolatedfrompowercircuitsbefore

takingresistancemeasurements.

Ifthetestleadsoradaptorsneedtobereplacedduetodamage,replacewithtestleadsor

adaptorsofthesamemodelorelectricalspecifications.

Donotusetheinstrumentiflowbatteryindicatorshowsthelowbatteryindicator.Ifthe

instrumentwillnotbeusedforalongperiod,pleaseremovethebatteryandstoresafely.

Donotstoreoroperatetheinstrumentinareasofhightemperature,highhumidity,flameor

explosivepotentials,orwherestrongelectromagneticfieldsexist.

Cleantheinstrumenthousingwithadampclothandmildcleaningagent;donotuse

abrasivesorsolvents.

Iftheinstrumentiswet,pleasedrybeforestoring.



ElectricalSafetySymbols



Riskofelectricalshock



Doubleinsulationorreinforcedinsulation

ACMeasurement



Ground



4 MG310-en-GB_V1.0 12/15

MeterDescription

123

678 9



1. EARTHterminalforInsulationResistanceandContinuitytesting.

2. GUARDterminalforACVandContinuitytesting.

3. VterminalforACVtestingandSelf‐Testmode.

4. LINETerminalforInsulationResistancetestingandSelf‐Testmode.

5. BacklitLCDDisplay

6. ZERObutton(shortpress)andLCDBacklightON/OFFbutton(longpress)

7. PI/DARTestingselectionbutton

8. TESTbutton

9. Rotaryfunctionselectswitch



Note:Securebatterycompartmentlocatedonrearofunit.



ControlButtons



1. PI/DARbutton:PresstoselectPIpolarizationindexandDARdielectricabsorptionratiotest

modes.

2. ZERO/Backlightbutton:Longpresstoenable/disableLCDbacklightorshortpresstoresetthe

displaytozeroforlowresistancemeasurements.

3. TESTbutton:Engage/disengagetestingforIR,Continuity,andACVoltagetests.

4. Rotaryfunctionswitch:SelectanIRoutputtestvoltage(250V/500V/1000V),measurelow

resistance(Continuity),ormeasureACVoltage(ACV).

5 MG310-en-GB_V1.0 12/15

1234567

101112

DisplayDescription

1. Batterystrengthindicator

2. DC/ACVoltagemodes

3. Voltagepresentalert

4. PItestmode

5. DARtestmode

6. Time1forPI/DARtests

7. Time2forPI/DARtests

8. PI/DARTesttimer(minutesandseconds)

9. Testvoltageoutput[V]

10. Units[G:Gigaohm;M:Megaohm]andVoltage[V]andResistance[Ω]modesymbols

11. Mainmeasurementdisplay

12. ZEROfunction

13. UnderRange<

14. OverRange>

15. Audiblecontinuityalertbeeper

OperatingInstructions

WARNING:Riskofelectrocution.High‐voltagecircuits,bothACandDC,areverydangerousand

shouldbemeasuredwithgreatcare.

1. ALWAYSturnthefunctionswitchtotheOFFpositionwhenthemeterisnotinuse.

2. If“OL”appearsinthedisplayduringameasurement,thevalueexceedsthemeter’srange.

3. Ifthebatteriesareweakreplacethembeforeperformingtests.Thebatteryindicatoronthe

upperleftalertstheuserwhenbatterypowerislow.Thebatterycompartmentisaccessed

throughthebackofthemetersecuredbyonePhillipsheadscrew.

DISPLAYBACKLIGHT

Pressandholdthebacklightbuttonfor2secondstoswitchthebacklightonoroff.Forbest

batteryefficiencyusethebacklightonlywhenneeded.

HOLD

Theautomaticholdfunctionfreezestheinsulationresistancereadinginthedisplayforashort

periodoftimeforconvenience.



LOWBATTERYINDICATION

Whenthe iconappearsinthedisplay,thebatteriesshouldbereplaced.Refertothebattery

replacementsectionofthisusermanual.

6 MG310-en-GB_V1.0 12/15

INSULATIONRESISTANCEMEASUREMENTS



1. Selectthedesiredtestvoltageusingtherotaryfunctionswitch.Selectthe250V,500V,or

1000Vswitchpositionforthecorrespondingoutputtestvoltage.

2. Connecttheredtestleadtothemeter’sLINE(4)jackandtheblacktestleadtotheEARTH

(1)jack.Connecttheprobeendofthetestleadstothecircuitundertest.

3. PresstheTESTbuttontotest.The

buttonwillself‐lockandthebutton

lampwilllight.

Note:Ifthecircuitundertestislive

andhasavoltagepotential(AC/DC)

over30V,themeterwillnottest(the

displaywillshowthe“>”iconand

thesymbolwillflash;thebuzzer

willalsosound).Ifthecircuitunder

testisnotliveorifitsvoltageisless

than30V,themeterwillbegin

applyinghigh‐voltagetothecircuit

undertest.

4. Theprimarydisplaywillshowthe

insulationresistanceinMΩ

(megaohms)orGΩ(gigaohms).

5. Thetestvoltage(VDC)valuewillbe

indicatedintheright‐mostauxiliary

display,thesymbolwillflashandthecautionbuzzerwillsound.

6. PresstoreleasetheTESTbuttontostopthetest.Thehighvoltagewillswitchoffandthe

resistancevalueindicatedintheprimarydisplaywillhold.

7. Subsequently,themeterwillinternallydischargethebalanceoftheinsulationtestvoltage.

Note:Turningthefunctionswitchtoanothertestpositionwillabortthetest.

8. Areadingof>5.50GΩindicatesthatthemeterreadingisabovetheresistancethresholdof

thatmeasurementrange.

CAUTION

Beforetakingmeasurementsdisconnecttheunitundertestfromallpowersourcesandisolateit

fromanystrayresistance.

Donotshortcircuitthetestleadswhenvoltageisoutputfromthemeter.

Allowsufficienttimebetweentestsfordevicesundertesttostabilize.

Whenredandblackclipsareconnectedtothecircuitundertest,highvoltageisoutputfromthe

LINEjackandcurrentfromtheEARTHjack.

Atthecompletionofatest,donottouchanypartsofthecircuitundertest.Componentsmayhave

becomechargedduringthetestandcoulddischargewhentouched.

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2nd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

8 MG310-en-GB_V1.0 12/15

ACCURACYSELF‐TESTFUNCTION

TheMG310featuresa10MΩaccuracycheck

featurefortheInsulationResistancemode.

Toverifytheaccuracy:

1. Connectawirejumpertothemeter

betweentheLINE(4)andV(3)

terminalsasshowninthe

accompanyingillustration.

2. Selectoneofthethreetestvoltage

(250/500/100V)switchpositions.

3. PresstheTESTbuttontobeginthetest.

4. Whentestingiscomplete,themeter

willdisplay10.0MΩ(±0.1MΩ).Ifthe

meterdoesnotshowanaccurate

readingpleasehaveitserviced.

LOWRESISTANCECONTINUITYTESTING

WARNING: To avoid electric shock, never measure continuity on circuits or wires that have

voltage on them.

1. Setthefunctionswitchtothe

(continuity)position.

2. Inserttheblacktestleadbananaplug

intotheGUARD(2)jack.

Inserttheredtestleadbananapluginto

theEARTH(1)jack.

3. PresstheTESTbutton.Thebuttonlamp

willlightindicatingthattestingcan

begin.

4. Touchthetestprobetipstothecircuit

orwireyouwishtocheck.

5. Iftheresistanceislessthan

approximately20Ω,theaudiblesignal

willsoundandtheaudioiconwillbe

displayed.Ifthecircuitisopen,the

displaywillindicate>220Ω.

6. PresstheTESTbuttonagaintodisengagethetestmode(thelampwillswitchoff)before

removingthetestleadsfromthecircuitundertestandfromthemeter.

9 MG310-en-GB_V1.0 12/15

ACVOLTAGEMEASUREMENTS

WARNING:RiskofElectrocution.Theprobetipsmaynotbelongenoughtocontactthelivepartsinside

some240Voutletsforappliancesbecausethecontactsarerecesseddeepintheoutlets.Asaresult,the

readingmayshow0voltswhentheoutletactuallyhasvoltageonit.Makesuretheprobetipsaretouching

themetalcontactsinsidetheoutletbeforeassumingthatnovoltageispresent.

CAUTION:

DonotmeasureACvoltagesifamotoronthecircuitisbeingswitchedONorOFF.Largevoltagesurges

mayoccurthatcandamagethemeter.

Donotmeasurevoltagehigherthan750VAC.

Pleaseuseextremecautiontoavoidhighvoltageelectricalshockwhileoperatingthisinstrument.

Disconnecttestleadsfromtestedcircuitsandmeterterminalsaftertesting.

1. SetthefunctionswitchtotheV(ACV)position.

2. InserttheblacktestleadbananaplugintotheGUARDjack(2).

InsertredtestleadbananaplugintotheVjack(3).

3. PresstheTESTbuttontoengagethetestingmode(thebuttonlampwilllight).

4. Touchtheblacktestprobetiptotheonesideofthecircuit.

Touchtheredtestprobetiptotheothersideofthecircuit.

5. Readthevoltageinthemaindisplay.

6. PresstheTESTbuttonagaintodisengagethetestmode(thelampwillswitchoff)before

removingthetestleadsfromthecircuitundertestandfromthemeter.

10 MG310-en-GB_V1.0 12/15

Maintenance

WARNING:Toavoidelectricshock,disconnectthetestleadsfromanysourceofvoltagebeforeremoving

thebackcoverorthebatteryorfusecovers.



WARNING:Toavoidelectricshock,donotoperatethemeteruntilthebatterycoverisinplaceand

fastenedsecurely.

Thisinstrumentisdesignedtoprovideyearsofdependableservice,ifthefollowingcare

instructionsareperformed:

1. KEEPTHEMETERDRY.Ifitgetswet,wipeitoff.

2. USEANDSTORETHEMETERINNORMALTEMPERATURES.Temperatureextremescan

shortenthelifeoftheelectronicpartsanddistortormeltplasticparts.

3. HANDLETHEMETERGENTLYANDCAREFULLY.Droppingitcandamagetheelectronicpartsor

thecase.

4. KEEPTHEMETERCLEAN.Wipethecaseoccasionallywithadampcloth.DONOTusechemicals,

cleaningsolvents,ordetergents.

5. USEONLYFRESHBATTERIESOFTHERECOMMENDEDSIZEANDTYPE.Removeoldorweak

batteriessotheydonotleakanddamagetheunit.

6. IFTHEMETERISTOBESTOREDFORALONGPERIODOFTIME,thebatteriesshouldbe

removedtopreventdamagetotheunit.



BATTERYINSTALLATION

WARNING:Toavoidelectricshock,disconnectthetestleadsfromanysourceofvoltagebefore

removingthebatterycover.

1. Turnpoweroffanddisconnectthetestleadsfromthe

meter.

2. Opentherearbatterycoverbyremovingthescrewusinga

Phillipsheadscrewdriver.

3. Insertthe6x1.5V‘AA’batteriesintothebatteryholder,

observingcorrectpolarity.

4. Putthebatterycoverbackinplace.Securewiththescrew.



You,astheenduser,arelegallybound(EUBattery

ordinance)toreturnallusedbatteries;disposalinthe

householdgarbageisprohibited!Disposeofusedbatteries/accumulatorsatcollectionpointsin

yourcommunityorwhereverbatteries/accumulatorsaresold!

Disposal:Followthevalidlegalstipulationsinrespectofthedisposalofthedeviceattheendof

itslifecycle

WARNING:Toavoidelectricshock,donotoperatethemeteruntilthebatterycoverisinplace

andfastenedsecurely.

Table des matières

Autres manuels Extech Instruments Instrument de mesure

Extech Instruments

Extech Instruments 461995 Manuel utilisateur

Extech Instruments

Extech Instruments CO200 Manuel utilisateur

Extech Instruments

Extech Instruments EN510 Manuel utilisateur

Extech Instruments

Extech Instruments MS400 Manuel utilisateur

Extech Instruments

Extech Instruments SDL800-NIST Manuel utilisateur

Extech Instruments

Extech Instruments 380976-K Manuel utilisateur

Extech Instruments

Extech Instruments 461893 Manuel utilisateur

Extech Instruments

Extech Instruments HT200 Manuel utilisateur

Extech Instruments

Extech Instruments LT45 Manuel utilisateur

Extech Instruments

Extech Instruments CO240 Manuel utilisateur

Extech Instruments

Extech Instruments CO10 Manuel utilisateur

Extech Instruments

Extech Instruments PQ2071 Manuel utilisateur

Extech Instruments

Extech Instruments 407026 Manuel utilisateur

Extech Instruments

Extech Instruments 407117 Manuel utilisateur

Extech Instruments

Extech Instruments 407412 Manuel utilisateur

Extech Instruments

Extech Instruments 407303 Manuel utilisateur

Extech Instruments

Extech Instruments MO53 Manuel utilisateur

Extech Instruments

Extech Instruments 380942 Manuel utilisateur

Extech Instruments

Extech Instruments HD350 Manuel utilisateur

Extech Instruments

Extech Instruments ExStik EC510 Manuel utilisateur

Extech Instruments

Extech Instruments SDL700 Manuel utilisateur

Extech Instruments

Extech Instruments C015 Manuel utilisateur

Extech Instruments

Extech Instruments MO230 Manuel utilisateur

Extech Instruments

Extech Instruments PH100 Manuel utilisateur

Manuels Instrument de mesure populaires d'autres marques

Suaoki

Suaoki D40 Manuel utilisateur

Elster

Elster BK-G1.6 Manuel utilisateur

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manuel

Duratool

Duratool D03128 Manuel utilisateur

Vega

Vega VEGAPULS 65 Manuel utilisateur

Tonghui

Tonghui TH2618B Manuel utilisateur

Tenmars

Tenmars TM-801 Manuel utilisateur

MSR

MSR 145 Manuel utilisateur

TPS

TPS WP-82 Manuel utilisateur

ELMETRON

ELMETRON CP-511 Manuel utilisateur

PCB Piezotronics

PCB Piezotronics 003C30 Manuel utilisateur

Tenma

Tenma 72-10465 Manuel utilisateur

Endress+Hauser

Endress+Hauser Proline Promag 50 Caractéristiques techniques

Siemens

Siemens SITRANS F Coriolis FCT030 Manuel de la liste des pièces

KLINGER

KLINGER CMF V Series Manuel utilisateur

EXFO

EXFO FTB-2 Manuel d'exploitation et d'entretien

Keysight

Keysight M8290A Manuel utilisateur

ADTEK

ADTEK MW-5 Manuel utilisateur