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1、LSD5-2009ANEMALightingSystemsDivisionDocument34-WattFluorescentLampsandHighFrequencyElectronicBallastCompatibilityPreparedbytheLampSectionNationalElectricalManufacturersAssociationth1300North17Street,Suite1752Rosslyn,Virginia22209Date:22January2009Therequirementsorgui
2、delinespresentedinthisdocument,aNEMALightingSystemsDivisionwhitepaper,areconsideredtechnicallysoundatthetimetheyareapprovedforpublication.Theyarenotasubstituteforaproductseller’soruser’sownjudgmentwithrespecttotheparticularproductdiscussed,andNEMAdoesnotundertaketogua
3、ranteetheperformanceofanyindividualmanufacturer’sproductsbyvirtueofthisdocumentorguide.Thus,NEMAexpresslydisclaimsanyresponsibilityfordamagesarisingfromtheuse,application,orreliancebyothersontheinformationcontainedinthesewhitepapers,standards,orguidelines.1LSD5-200934
4、-WattFluorescentLampsandHighFrequencyElectronicBallastCompatibilityIntroductionPriortotheenergycrisisof1974,fluorescentlamp-ballastcombinationswerefewer.Potentialinteractionandinteroperabilityoflampsandballastswasamuchsimplertopic.Forty-wattfour-foot(F40)T-12rapid-sta
5、rtlampsoperatedon60Hzrapid-startelectromagnetic(EM)ballasts.Thistypicalde-facto‘system’representedthevastmajorityofmainstreamindoorcommercial1lightinginstallationsforoffices,schools,institutionsingeneral,andretailestablishments.Electromagneticballastdesignshadalreadyf
6、ullymaturedbytheearly1970s.Asaresult,theballastdesignstendedtoexhibitrelativelyminordifferencesamongmanufacturers,particularlyintermsofelectricalcircuitconfigurationsandtypicalcomponents.ElectromagneticballastsstartedandoperatedF40lampsinessentiallythesamemanner.Simil
7、arly,F40rapid-startlampswereofsimplerconstructionincomparisontothe‘energysaving’typesthatwouldfollow.Argonwasthefillgasofchoiceatapressureofapproximately2.4torr.Internallampconductivecoatingshadnotyetbeenintroduced,andphosphorcoatingsconsistedofsimplehalophosphatemate
8、rials.Coolwhitewasthemostprolificlampcolor.2Highfrequencyoperationoffluorescentlampshadbeenintroduced,butonaverylimitedscale
