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1、BRITISHSTANDARDBSEN60921:1991IncorporatingAmendmentNos.1and2SpecificationforBallastsfortubularfluorescentlamps—PerformancerequirementsLicensedCopy:sheffieldunsheffieldun,na,FriNov1013:21:27GMT+00:002006,UncontrolledCopy,(c)BSIThisEuropeanStandardEN60921:
2、1991hasthestatusofaBritishStandardBSEN60921:1991CooperatingorganizationsTheEuropeanCommitteeforElectrotechnicalStandardization(CENELEC),underwhosesupervisionthisEuropeanStandardwasprepared,comprisestheNationalCommitteesofthefollowingcountries.AustriaItal
3、yBelgiumLuxemburgDenmarkNetherlandsFinlandNorwayFrancePortugalGermanySpainGreeceSwedenIcelandSwitzerlandIrelandUnitedKingdomThisBritishStandardwaspublishedundertheauthorityoftheStandardsBoardandAmendmentsissuedsincepublicationcomesintoeffecton30August199
4、1Amd.No.DateComments©BSI07-19997433December1992LicensedCopy:sheffieldunsheffieldun,na,FriNov1013:21:27GMT+00:002006,UncontrolledCopy,(c)BSIThefollowingBSIreferences8884NovemberIndicatedbyasidelineinthemarginrelatetotheworkonthis1995standard:Committeerefe
5、renceLGL/21Draftforcomment86/25168DCISBN0580199711BSEN60921:1991ContentsPageCooperatingorganizationsInsidefrontcoverNationalforewordiiForeword2TextofEN609215NationalappendixNA(informative)DeletionsfromandIECtextamendedbycommonmodificationstoIECPublicatio
6、n921:198823NationalappendixNB(informative)24NationalappendixNC(informative)InsidebackcoverLicensedCopy:sheffieldunsheffieldun,na,FriNov1013:21:27GMT+00:002006,UncontrolledCopy,(c)BSI©BSI07-1999iBSEN60921:1991NationalforewordThisBritishStandardhasbeenprep
7、aredbyTechnicalCommitteeCPL/34/3andistheEnglishlanguageversionofEN60921:1991“Ballastsfortubularfluorescentlamps—Performancerequirements”,anditsAmendments1and2,publishedbytheEuropeanCommitteeforElectrotechnicalStandardization(CENELEC).ItisidenticalwithIEC
8、921:1988,itscorrigendumofApril1989anditsAmendmentsNo.1:1990andNo.2:1994publishedbytheInternationalElectrotechnicalCommission(IEC)ofthesametitle.ThisstandardtogetherwithBSEN60920:1991supersedesBS2818-1:1985whichiswithdrawn.
