
10
NSG 3040 EMC Test System
TheNSG3040testsystemisdesignedprimarilyforcable-bornetransientinter-
ferencetestsasspeciedintheEuropeangenericstandardsIEC/EN61000-6-1
coveringequipmentforhousehold,ofceandlightindustrialuse,andIEC/EN
61000-6-2forapplicationsinindustrialenvironments.TheNSG3040generates
thesetestsinaccordancewithIEC/EN61000-4-2,-4,-5,and-11.Accessoriesare
alsoavailableforgeneratingoptionalteststoIEC/EN61000-4-8and-9.
TheEUdirectiveno.89/336/EEC(fortheassignmentoftheCEsymbol)tothese
standardsandtothistypeofequipment.
ESDtests(inaccordancewithIEC/EN61000-4-2)mustbeperformedwitha
separatesimulator,suchas theTeseqNSG435,NSG437 orNSG438. The
standardcallsforbothairandcontactdischarges,andthesimulatorissupplied
withspecialtipsforeachtypeoftest.Inthecaseofairdischargesthesimulator
isdischargedbyholdingthetipclosetotheEUT.Then,whiledepressingthe
trigger,movingitclosertothetargetareauntiladischargeoccurs.Contact
dischargesoccurwiththetipofthesimulatorindirectcontactwithEUT.
Bursttests(incompliancewithIEC/EN61000-4-4)simulatethehighvoltage/high
frequencyinterferencepulsestypicallyproducedwhenaninductivelyloaded
switchisoperated.Withoutcounter-measures,suchinterferencemayoccur
whenacurrentthroughanelectromagneticdevice,e.g.motor,circuitbreaker,
relay,uorescentlamp,etc.isswitchedoff.
Thistypofinterferencecanaffectotherequipmentineitheroftwoways.Firstly,
theinterferencecanbecoupleddirectlyintothetargetequipmentviathemains
powercable.Theinterferencecanbetransmittedfromthesourcealongthe
mainspowercableconnectedtothetarget.Interferencefromthemainscan
3 STANdARdS ANd AppLiCATioNS
3.1 Burst left