Extech Instruments EX355

EX35x‐en‐GB_V1.212/15
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.

Riskofelectricalshock

Fusesymbol

Equipmentprotectedbydoubleorreinforcedinsulation

LowBatterysymbol

ConformstoEUdirectives

Donotdiscardthisproductinhouseholdtrash.

ACmeasurement
DCmeasurement

Earthground

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