Extech Instruments EX655

EX65x‐en‐GB_V1.67/16
5
SafetySymbolsthataretypicallymarkedonmetersandinstructions

Thissymbol,adjacenttoanothersymbol,indicatestheusermustrefertothe
manualoruserguideforfurtherinformation.
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Riskofelectricalshock
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Fusesymbol
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Equipmentprotectedbydoubleorreinforcedinsulation
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LowBatterysymbol
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ConformstoEUdirectives
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Donotdiscardthisproductinhouseholdtrash.
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ACmeasurement
DCmeasurement
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Earthground
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UnsafeVoltageAlert
Whenthemeterdetectsavoltageequaltoorgreaterthan30Voravoltageoverload(OL)inVorLoZmode,
thesymbol
isdisplayed.Thissystemwasdesignedtoalerttheuserofapotentiallyhazardousvoltage.
PERIEC1010OVERVOLTAGEINSTALLATIONCATEGORY
OVERVOLTAGECATEGORYI
EquipmentofOVERVOLTAGECATEGORYIisequipmentforconnectiontocircuitsinwhichmeasuresare
takentolimitthetransientover‐voltages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