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Roadvehicles—Testmethodsforelectricaldisturbancesfromelectrostaticdischarge1ScopeThisInternationalStandardspecifieselectrostaticdischarge(ESD)testmethodsforevaluatingelectronicmodulesintendedforuseinroadvehicles,includingproceduresforevaluatingelectronicmodulesbothonthebenchandincompletedvehicles.Additionally,itspecifiesatestprocedureforclassifyingtheESDsensitivityofmodulesforpackagingandhandling,andaprocedureforcalibratingthesimulatorusedtogeneratetheelectrostaticdischarges,aswellasfunctionalstatusclassificationsforimmunitytoESD.ThisInternationalStandardisapplicabletoalltypesofroadvehicles,regardlessofthevehiclepropulsionsystem(e.g.spark-ignitionengine,dieselengine,electricmotor).4Testequipment4.1GeneralTestequipmentusedtoverifytherequirementsofthedeviceundertestshallnotbesensitivetoESD.ThefollowingtestequipmentisapplicabletoalltestproceduresspecifiedinthisInternationalStandard,includingthoseofannexA.4.2ESDsimulatorTheESDsimulatorshallhavethefollowingcharacteristics.a)Voltagerange:variablefrom?25kVto+25kV.b)Capacitance:330pF±10%,150pF±10%(twoprobes).c)Resistance:2000?±10%.d)Risetime:1)directcontact,0,7nsto1ns(ata2?load);2)airdischarge,u5ns(ata2?load);3)tipshapes(seeFigure2),inaccordancewithIEC61000-4-2.Thesimulatorshallbedesignedsothatthedischargecapacitanceisfullychargedtothedesiredvoltagebeforetheenergyisswitchedtothedeviceundertest.TheconstructionoftheESDsimulatorshallbesuchthatthehigh-voltagegroundandthechassisgroundareelectricallyisolatedfromoneanother.Simulatorequipmentusedshallbeofatypethatiscommerciallyavailable.4.3GroundplaneAgroundplaneisametallicsheet(copper,brass,etc.3))thatshallhaveaminimumthicknessof1mmandanareaofatleast1m2,ensuringthatitprojectsbeyondthedeviceundertestbyatleast100mmonallsides.Thegroundplaneshallbeconnectedtothefacilitygroundbyagroundstraplessthan2mlongandatleast50mmwide.4.4InsulationblocksInsulationblocks,ifused,shallbeconstructedofclean,non-hygroscopicmaterial.Theblocksshallbe(25±2,5)mminheightandprojectbeyondthedeviceundertestbyatleast20mmonallsides.4.5CoaxialtargetAcoaxialtargetasspecifiedinIEC61000-4-2:1995shallbeusedduringtheESDsimulatorverificationgiveninannexA.4.6WidebandattenuatorIfneeded,a50?,20dBwidebandattenuatoristobeattachedtotheoutputofthecoaxialtargetduringtheESDsimulatorverificationgiveninannexA.[圖片]500){this.resized=true;this.width=500;this.alt='這是一張縮略圖，點(diǎn)擊可放大。\n按住CTRL，滾動(dòng)鼠標(biāo)滾輪可自由縮放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/55/1402091184890422.jpg');}"onmousewheel="returnimgzoom(this);">