Extech Instruments MG310 Manual de usuario

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.

Tabla de contenidos

Otros manuales de Instrumento de medición de Extech Instruments

Extech Instruments

Extech Instruments EasyView EA33 Manual de usuario

Extech Instruments

Extech Instruments HT30 Manual de usuario

Extech Instruments

Extech Instruments 407910 Manual de usuario

Extech Instruments

Extech Instruments CO100 Manual de usuario

Extech Instruments

Extech Instruments 407703A Manual de usuario

Extech Instruments

Extech Instruments EN510 Manual de usuario

Extech Instruments

Extech Instruments 407355 Manual de usuario

Extech Instruments

Extech Instruments PQ3450-2-NIST Manual de usuario

Extech Instruments

Extech Instruments ExStik PH100 Manual de usuario

Extech Instruments

Extech Instruments CO260 Manual de usuario

Extech Instruments

Extech Instruments Oyster Series Manual de usuario

Extech Instruments

Extech Instruments MultiScope 381270 Manual de usuario

Extech Instruments

Extech Instruments 401027 Manual de usuario

Extech Instruments

Extech Instruments TKG250 Manual de usuario

Extech Instruments

Extech Instruments 407736 Manual de usuario

Extech Instruments

Extech Instruments Oyster 341350A-P Manual de usuario

Extech Instruments

Extech Instruments MA140 Manual de usuario

Extech Instruments

Extech Instruments 407730 Manual de usuario

Extech Instruments

Extech Instruments VB450 Manual de usuario

Extech Instruments

Extech Instruments CLT600 Manual de usuario

Extech Instruments

Extech Instruments Extech 380976 Manual de usuario

Extech Instruments

Extech Instruments 461891 Manual de usuario

Extech Instruments

Extech Instruments CG104 Manual de usuario

Extech Instruments

Extech Instruments MO270 Manual de usuario

Manuales populares de Instrumento de medición de otras marcas

Suaoki

Suaoki D40 Manual de usuario

Elster

Elster BK-G1.6 Manual de usuario

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manual

Duratool

Duratool D03128 Manual de usuario

Vega

Vega VEGAPULS 65 Manual de usuario

Tonghui

Tonghui TH2618B Manual de usuario

Tenmars

Tenmars TM-801 Manual de usuario

MSR

MSR 145 Manual de usuario

TPS

TPS WP-82 Manual de usuario

ELMETRON

ELMETRON CP-511 Manual de usuario

PCB Piezotronics

PCB Piezotronics 003C30 Manual de usuario

Tenma

Tenma 72-10465 Manual de usuario

Endress+Hauser

Endress+Hauser Proline Promag 50 Especificaciones técnicas

Siemens

Siemens SITRANS F Coriolis FCT030 Manual de lista de piezas

KLINGER

KLINGER CMF V Series Manual de usuario

EXFO

EXFO FTB-2 Manual de operación y mantenimiento

Keysight

Keysight M8290A Manual de usuario

ADTEK

ADTEK MW-5 Manual de usuario