Extech Instruments MG500 Manual

next previous

MG500-EU-EN v1.0 7/13

Introduction



ThankyouforselectingtheExtechInstrumentsModelMG500.Thisdevice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



CAUTIONRISKOFELECTRICSHOCK



Thistesterhasbeendesignedwithsafetyinmind.However,nodesigncancompletelyprotect

againstincorrectuse.Electricalcircuitscanbedangerousandlethalwhenalackofcautionand

poorsafetypracticesareused.

Donottakefieldmeasurementsoneitherpower

systemgroundingduringperiodsoflightning

activity,oranynon‐insulatedsystemornon‐insulatedcircuit.Intheeventthatlightningoccurs,

stopalltestingandisolateandremoveanytemporarilyinstalledtestspikesortestleads.

Preparationsfortestingpowersystemgrounding(orclosetoit)canleavepersonnelvulnerable

to

exposurecausedbyfaultsat,orfedfrom,thesystemundertest,transferredpotentialsfrom

remotetestgrounds,andinadvertentlineenergizing.Alwaysinsulatethedeviceundertest.

Whiletheprobabilityofsuchoccurrencesislow,personnelsafetywill,nevertheless,be

enhancedbythefollowing:

Whenworkingnearhigh

tensionsystemsrubberglovesandshoesshouldbeworn.Workon

clean,drycrushedrockoraninsulatingblanket.Avoidbarehand‐to‐handcontactbetween

thetesterandextendedtestleads.

Whenusingthetesterwithtestleads,ensurethattheyaresafeandproperlyauthorized.

Disconnectthetesterfromanyexternalcircuitwhencheckingorchangingthefuseand/or

batteries.