Extech Instruments MA430T User manual



UserManual

400AmpTrueRMSACClampMeter+NCV



ModelMA430T

AdditionalUserManualTranslationsavailableatwww.extech.com

MA430T-en-GB_V1.3 10/16

Introduction

CongratulationsonyourpurchaseofthisExtechMA430TTrueRMSClampMeter.Thismeter

measuresACCurrent,AC/DCVoltage,Resistance,DiodeTest,ContinuityandNon‐ContactVoltage

detection.Thedoublemoldedcaseisdesignedforheavydutyuse.Thismeterisshippedfully

testedandcalibratedand,withproperuse,will

provideyearsofreliableservice.Pleasevisitour

website(www.extech.com)tocheckforthelatestversionofthisUserGuide,ProductUpdates,and

CustomerSupport.



Safety

InternationalSafetySymbols

Thissymbol,adjacenttoanothersymbolorterminal,indicatestheusermust

refertothemanualforfurtherinformation.



Thissymbol,adjacenttoaterminal,indicatesthat,undernormaluse,

hazardousvoltagesmaybepresent



Doubleinsulation



ThisWARNINGsymbolindicatesapotentiallyhazardoussituation,whichifnot

avoided,could

resultindeathorseriousinjury.

ThisCAUTIONsymbolindicatesapotentiallyhazardoussituation,whichifnot

avoided,mayresultdamagetotheproduct.



PERIEC1010OVERVOLTAGEINSTALLATIONCATEGORY

OVERVOLTAGECATEGORYI

EquipmentofOVERVOLTAGECATEGORYIisequipmentforconnectiontocircuitsinwhich

measuresaretakentolimitthetransientovervoltagestoanappropriatelowlevel.

Note–Examplesincludeprotectedelectroniccircuits.

OVERVOLTAGECATEGORYII

EquipmentofOVERVOLTAGECATEGORYIIisenergy‐consumingequipmenttobesupplied

from

thefixedinstallation.

Note–Examplesincludehousehold,office,andlaboratoryappliances.

OVERVOLTAGECATEGORYIII

EquipmentofOVERVOLTAGECATEGORYIIIisequipmentinfixedinstallations.

Note–Examplesincludeswitchesinthefixedinstallationandsomeequipmentforindustrialuse

withpermanentconnectiontothefixedinstallation.

OVERVOLTAGECATEGORYIV

EquipmentofOVERVOLTAGECATEGORYIVisforuseattheoriginoftheinstallation.

Note–Examplesincludeelectricitymetersandprimaryover‐currentprotectionequipment

WARNING

CAUTION

MA430T-en-GB_V1.3 10/16

SAFETYNOTES

 Donotexceedthemaximumallowableinputrangeofanyfunction.

 Donotapplyvoltagetometerwhenresistancefunctionisselected.

 SetthefunctionswitchOFFwhenthemeterisnotinuse.

 Removethebatteryifmeteristobestoredforlongerthan60

days.

WARNINGS

 Setfunctionswitchtotheappropriatepositionbeforemeasuring.

 Whenmeasuringvoltsdonotswitchtocurrent/resistancemodes.

 Donotmeasurecurrentonacircuitwhosevoltageexceeds600V.

 Whenchangingrangesalwaysdisconnectthetestleadsfromthecircuitundertest.

CAUTIONS

 Improperuseofthismetercancausedamage,shock,injuryordeath.Readandunderstand

thisusermanualbeforeoperatingthemeter.

 Alwaysremovethetestleadsbeforereplacingthebatteryorfuses.

 Inspecttheconditionofthetestleadsandthemeteritselfforanydamagebefore

operating

themeter.Repairorreplaceanydamagebeforeuse.

 Usegreatcarewhenmakingmeasurementsifthevoltagesaregreaterthan25VACrmsor

35VDC.Thesevoltagesareconsideredashockhazard.

 Alwaysdischargecapacitorsandremovepowerfromthedeviceundertestbefore

performingDiode,Resistance

orContinuitytests.

 Voltagechecksonelectricaloutletscanbedifficultandmisleadingbecauseofthe

uncertaintyofconnectiontotherecessedelectricalcontacts.Othermeansshouldbeused

toensurethattheterminalsarenot"live".

 Iftheequipmentisusedinamannernotspecifiedbythe

manufacturer,theprotection

providedbytheequipmentmaybeimpaired.



Function MaximumInput

ACAmps, 400A

AC/DCVolts 600VDC/AC

Resistance,DiodeTest,Continuity 250VDC/AC

MA430T-en-GB_V1.3 10/16

Description

MeterDescription

1. NCVsensor

2. Currentclamp

3. Non‐contactACvoltageindicatorlight

4. Clamptrigger

5. DataHoldbutton

6. LCDdisplay

7. MODEselectbutton

8. COMinputjack

9. RotaryFunctionswitch

10. Backlightbutton

11. Rangebutton

12. MAXbutton

13. VΩHzjack

14. BatteryCover

(rear)



DisplayiconsDescription

HOLD DataHold

AUTO Autoranging

MAX Maxhold

DC DirectCurrent

AC AlternatingCurrent

 Lowbattery

V Volts(Voltage)

 Ohms(Resistance)

A Amperes(Current)

m,M,k Unitofmeasureprefixes



)

) Continuitytest

Diodetest

MAX

MA430T-en-GB_V1.3 10/16

Operation

NOTES:ReadandunderstandallWarningandCautionstatementsinthisoperationmanual

priortousingthismeter.SetthefunctionselectswitchtotheOFFpositionwhenthemeteris

notinuse.



Non‐ContactVoltageDetector

WARNING:RiskofElectrocution.Beforeuse,alwaystesttheVoltageDetectoronaknownlive

circuittoverifyproperoperation.

1. RotatetheFunctionswitchtoanyposition.

2. Placethedetectorprobetipontheconductortobetested.

3. IfACvoltageispresent,theNCVdetectorlightwillturnonwitha

steadyredlight.

NOTE:Theconductorsinelectricalcordsetsareoftentwisted.Forbest

results,movetheprobetipalongalengthofthecordtoassure

placingthetipincloseproximitytotheliveconductor.

NOTE:Thedetectorisdesignedwithhighsensitivity.Staticelectricityorothersourcesofenergy

mayrandomlytripthesensor.Thisisnormaloperation.



ACCurrentMeasurements



WARNING:Disconnectthetestleadsbeforemakingclampmeasurements.



1. RotatetheFunctionswitchtothe400Aposition

2. Pressthetriggertoopenjaw.Fullyencloseonlyone

conductor.

3. Readthecurrentvalueinthedisplay.

4. Ifthevalueislessthan200A,rotatethefunctionswitchto

alowerrangetoimproveresolution.



MA430T-en-GB_V1.3 10/16

AC/DCVoltageMeasurements

CAUTION:DonotmeasurevoltagesifamotoronthecircuitisbeingswitchedONorOFF.

Largevoltagesurgesmayoccurthatcandamagethemeter.



1. RotatethefunctionswitchtotheVACortheVDCposition.

2. InserttheblacktestleadbananaplugintothenegativeCOMjack.

InserttheredtestleadbananaplugintothepositiveVjack.

3. Touchtheblacktestprobetiptothenegativesideofthe

circuit.

Touchtheredtestprobetiptothepositivesideofthecircuit.

4. Readthevoltagevalueinthedisplay.



Resistance,Diode,ContinuityMeasurements

Note:Removepowerfromthedeviceundertestbeforemakingresistancemeasurements

1. SetthefunctionswitchtotheΩposition.

2. InserttheblacktestleadbananaplugintothenegativeCOMjack.

InserttheredtestleadbananaplugintothepositiveΩjack.

3. Touchtheblacktestprobetiptoonesideofthedevice.

Touchtheredtestprobetiptotheothersideofthedevice.

4. Readtheresistancevalueinthedisplay.

5. PresstheMODEbuttontoselecttheDIODEmode.TheDiodesymbolwill

appearinthedisplay.

6. PresstheMODEbuttontoselecttheContinuitymode.Thecontinuity

symbolwillappearinthedisplay.Iftheresistanceis<150ohmsthetone

willsound.



MA430T-en-GB_V1.3 10/16

DataHold

TofreezetheLCDreading,presstheHOLDbutton.TheHOLDiconappearsontheLCD.Pressthe

HOLDbuttonagaintoreturntonormaloperation.

MAX

PresstheMAXbuttontodisplayandholdthemaximumreading.Thedisplaywillupdateifa

higherreadingisdetected.PresstheMAXbuttontoexitthemode.

RANGE(VoltageandResistancefunctions)

Whenthemeterisfirstturnedon,itautomaticallygoesintoAuto‐Ranging.Thisautomatically

selectsthebestrangeforthemeasurementsbeingmadeandisgenerallythebestmodefor

mostmeasurements.Formeasurementsituationsrequiringthatarangebemanuallyselected,

performthefollowing:

1. PresstheRANGEbuttonandthe“AUTO”iconwillturnoff.

2. PresstheRANGEbuttontostepthroughtheavailablerangesuntiltherangeneeded

appears.

3. Press and hold the RANGE button for 2 seconds to exit the Manual‐Ranging mode and

returntoAuto‐Ranging.

MODE

PresstheMODEbuttonintheΩ‐Diode‐Continuitypositiontoselectthefunctiontobeused.

Backlight

Pressandholdthe buttonfor2secondstoturnthebacklighton.Repeatthepresstoturn

thebacklightofforwaitapproximately15secondsforittoturnoffautomatically.

AutomaticPowerOff

Inordertoconservebatterylife,themeterwillautomaticallyturnoffafterapproximately15

minutes.Themeterwill“beep”beforeshuttingdown.Toturnthemeteronagain,changethe

positionofthefunctionswitch.

Lowbatteryindication

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

replacementprocedureinthemaintenancesection.



MA430T-en-GB_V1.3 10/16

Maintenance

WARNING:Toavoidelectricalshock,disconnectthemeterfromanycircuit,removethetest

leadsfromtheinputterminals,andturnOFFthemeterbeforeopeningthecase.Donotoperate

themeterwithanopencase.

CleaningandStorage

Periodicallywipethecasewithadampclothandmilddetergent;donotuseabrasivesor

solvents.Ifthemeterisnottobeusedfor60daysormore,removethebatteryandstoreit

separately.

BatteryReplacement

1. RemovethePhillipsheadscrewthatsecurestherearbatterycover

2. Openthebatterycompartment

3. Replacethe9Vbattery.

4. Securethebatterycompartmentdoor

Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.

Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriate



collectionsites,theretailstorewherethebatterieswerepurchased,orwherever

batteriesaresold.

Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.Theuseris

obligatedtotakeend‐of‐lifedevicestoadesignatedcollectionpointforthedisposal

ofelectricalandelectronicequipment.



OtherBattery

SafetyReminders

o Neverdisposeofbatteriesinafire.Batteriesmayexplodeorleak.

o Nevermixbatterytypes.Alwaysinstallnewbatteriesofthesametype.



MA430T-en-GB_V1.3 10/16

Specifications

Function Range Resolution

Accuracy

(%ofreading+digits)

ACCurrent

50/60Hz

2.00A 0.001A ±(2.5%+15digits)

20.00A 0.01A

±(2.5%+8digits)

200.0A 0.1A

400A 1A ±(3.0%+8digits)

ACVoltage

50/60Hz

200.0mV 0.1mV ±(1.5%+35digits)

2.000V 0.001V

±(1.8%+8digits)

20.00V 0.01V

200.0V 0.1V

600V 1V ±(2.5%+8digits)

DCVoltage 200.0mV 0.1mV ±(0.8%+2digits)

2.000V 0.001V

±(1.5%+2digits)

20.00V 0.01V

200.0V 0.1V

600V 1V ±(2.0%+2digits)

Resistance 200.0Ω 0.1Ω ±(1.0%+4digits)

2.000kΩ 0.001kΩ

±(1.5%+2digits)

20.00kΩ 0.01kΩ

200.0kΩ 0.1kΩ

2.000MΩ 0.001MΩ ±(2.5%+3digits)

20.00MΩ 0.01MΩ ±(3.5%+5digits)



MA430T-en-GB_V1.3 10/16

GeneralSpecifications

Clampjawopening 30mm(1.18")approx.

Display 2,000countLCD

Continuitycheck Threshold<150;Testcurrent<0.5mA

Diodetest Testcurrentof0.3mAtypical;

 Opencircuitvoltage1.5VDCtypical

LowBatteryindication Batterysymbolisdisplayed

Over‐rangeindication ‘OL’displayed

Displayrate 2readingspersecond,nominal

InputImpedance 10M(VDCandVAC)

ACbandwidth 50to60Hz(VAC,AAC)

ACresponse Truerms

OperatingTemperature 5Cto40C(41Fto104F)

StorageTemperature‐20Cto60C(‐4Fto140F)

OperatingHumidity Max80%upto31C

(87F)decreasinglinearlyto50%at40C

(104F)

StorageHumidity <80%

OperatingAltitude 2000meters(7000ft)maximum.

Battery 9Vbattery

AutopowerOFF Afterapprox.15minutes

Dimensions&Weight 200x66x37mm(7.9x2.6x1.5”);205g(7.23oz)

Safety Forindooruseandinaccordancewiththerequirementsfordouble

insulationtoIEC1010

‐1(2001):EN61010‐1(2001)Overvoltage

CategoryIII600V,PollutionDegree2.

Approvals CEandETL



Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

ISO‐9001Certified

www.extech.com



Extech Instruments MA430T User manual

Related papers

Other documents