Extech Instruments MA430T Manual

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MA430T-EU-EN V1.1 3/13

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