1、BRITISH STANDARD BS EN 352-6:2002 Hearing protectors Safety requirements and testing Part 6: Ear-muffs with electrical audio input The European Standard EN 352-6:2002 has the status of a British Standard ICS 13.340.20 BS EN 352-6:2002 This British Standard, having been prepared under the direction o
2、f the Health and Environment Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 December 2002 BSI 12 December 2002 ISBN 0 580 40979 1 National foreword This British Standard is the official English language version of EN 352-6
3、:2002. The UK participation in its preparation was entrusted to Technical Committee PH/7, Hearing protectors, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement int
4、ernational or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not pu
5、rport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European commit
6、tee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12
7、, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3526 December2002 ICS13.340.20 Englishversion Hearingprot
8、ectorsSafetyrequirementsandtestingPart6: Earmuffswithelectricalaudioinput ProtecteursindividuelscontrelebruitExigencesde scuritetessaisPartie6:Serretteavecentreaudio lectrique GehrschtzerSicherheitstechnischeAnforderungenund PrfungenTeil6:Kapselgehrschtzermit Kommunikationseinrichtungen ThisEuropean
9、StandardwasapprovedbyCENon16October2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedon
10、applicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmemb
11、ersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORM
12、UNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3526:2002EEN3526:2002(E) 2 Contents page Foreword3 Introduction.4 1 Scope4 2 Normativereferences 4 3 Termsanddefinitions . 5 4 Requirements.5 5 Te
13、sting5 6 Informationsuppliedbythemanufacturer .6 7 Marking.7 AnnexA (informative)Uncertaintyofmeasurementandinterpretationoftestresults8 AnnexB (informative) Determinationofsoundoutputlevelsforearmuffsfittedwith electricalaudioinput. .10 AnnexZA (informative) ClausesofthisEuropeanstandardaddressinge
14、ssential requirementsorotherprovisionsofEUDirective . .11 Bibliography12EN3526:2002(E) 3 Foreword Thisdocument(EN3526:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC159,“Hearing protectors“,thesecretariatofwhichisheldbySIS. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicat
15、ionofanidentical textorbyendorsement,atthelatestbyJune2003,andconflictingnationalstandardsshallbewithdrawnat thelatestbyJune2003. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandthe EuropeanFreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s). Forrelation
16、shipwithEUDirectives,seeinformativeAnnexZA,whichisanintegralpartofthisstandard. InthisstandardtheannexesAandBareinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Den
17、mark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway, Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN3526:2002(E) 4 Introduction Thisstandardfor”HearingProtectorssafetyrequirementsandtestingPart6:Earmuffswithelectrical audioinput”,specifiesproceduresf
18、orthetestingofpersonalhearingprotectiondevicesinrelationtoDirective 89/686/EECPersonalProtectiveEquipment. EN3521dealswithrequirementsforearmuffs,EN3522withearplugs,EN3523withearmuffsattached toindustrialsafetyhelmets.EN138191andEN138192dealwithtestingplanscommontoalltypesof hearingprotectorscovered
19、bythisseriesofENs. Additionalsafetyrequirementsandtheassociatedtestproceduresforleveldependentearmuffsare containedinEN3524,forearmuffswithactivenoisereductioninEN3525andforleveldependentear plugsinEN3527.AnassociatedstandardEN458,coversselection,use,careandmaintenanceofhearing protection. Thepartic
20、ularrequirementforhearingprotectorsinrelationtotheirabilitytoreducenoisetobelowdailylimit levelssetbyDirective86/188/EEC“ontheprotectionofworkersfromtherisksrelatedtoexposuretonoiseat work“isaddressedinthestandardbymeansofarequirementtoreporttheoutputsoundlevelsoftheelectrical audiocircuit. Anadditi
21、onalacousticperformancetestmethodtothatdescribedinEN248691andappliedinEN3521, EN3522andEN3523isrequiredforearmuffswithelectricalaudioinput.Untilsuchtimeasthisworkis completed,thetestmethoddescribedinAnnexBofthisstandardisrecommendedforearmuffswithelectrical audioinput,inadditiontotheEN248691testrequ
22、iredwithinEN3521. Earmuffswithelectricalaudioinputaredesignedtoprovidespeechinformationandwarningsignals,while providingattenuationofsoundsinexcessoflimitlevels.Theymaybeselectedforuseinanumberofdifferent workingenvironments,inairtrafficcommunication,inthepoliceforces,inthebroadcastingandentertainme
23、nt industries,inintermittentorimpulsivenoiseenvironmentswhenspeechinformationneedstobereceivedand whereotherwarningsignalsarerequiredtobeheard. Thispartofthestandardisaspecificationintendedfortypeapprovalpurposes,forwhichfoursetsofspecimen earmuffsaretested,(furthersamplesmayberequiredfortestingunde
24、rEN351,orEN3523,asappropriate). Therequirementsandtestsofthestandardareconcernedprimarilywiththeelectricalaudioinputperformanceof theearmuffs.Thestandardmaybeappliedtoearmuffsforfittingtoindustrialsafetyhelmets. 1Scope ThisEuropeanStandardisconcernedwithearmuffswhosepassiveacousticperformancemaybesu
25、pplemented byanelectricalaudioinputfacilityorcircuitforessentialsafetyrelatedpurposes.Itspecifiesadditional constructional,designandperformancerequirements,methodsoftest,markingrequirementsanduser informationrelatingtotheincorporationoftheelectricalaudioinputfacility. Therequirementsofthisstandardar
26、eintendedtotakeaccountoftheergonomicinteractionbetweenthe wearer,thedeviceand,wherepossible,theworkingenvironmentinwhichthedeviceislikelytobeused(see AnnexZAofthisstandardandEN458) 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications. Thesen
27、ormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationre
28、ferredtoapplies(includingamendments). EN3521:2002, HearingprotectorsGeneralrequirementsPart1:EarmuffsEN3526:2002(E) 5 EN3523:2002,HearingprotectorsGeneralrequirementsPart3:Earmuffsattachedtoanindustrial safetyhelmet EN138191, HearingprotectorsTestingPart1:Physicaltestmethods 3 Termsanddefinitions Fo
29、rthepurposesofthisEuropeanStandardthetermsanddefinitionsgiveninEN3521:2002(orEN352 3:2002,asappropriate)andthefollowingdefinitionapply: 3.1 soundoutputlevel Aweighteddiffusefieldrelatedsoundpressurelevelproducedbytheelectricalaudioinputfacilityofanearmuff foragiveninputlevel. 4Requirements 4.1Genera
30、l EarmuffswithelectricalaudioinputshallmeettherequirementsofEN3521(orEN3523,as appropriate). Additionalrequirementsarelistedbelowin4.2to4.4. 4.2 Materialsandconstruction TheelectricalcircuitoftheearmuffshallmeettheelectricalsafetyandEMCrequirementsappropriatetothis classofequipment. 4.3Performance 4
31、.3.1General EarmuffswithelectricalaudioinputshallmeetalltheperformancerequirementsofEN3521(orEN 3523,as appropriate),includingtheminimumatt enuationrequirementintheirpassivemode.Additionally,therequirements specifiedbelowin4.3shallbesatisfied. Specimensofearmuffsshallbeconditionedandtestedasspecifie
32、din5.1.1and5.1.2.Theschemeoftesting shallbeasspecifiedin5.1.3. 4.3.2 Soundoutputlevels Thesoundoutputlevelsofthefourtestsamplesshallbemeasuredinaccordancewith5.2andreportedinwearer information(6.1). 5Testing 5.1 Specimens,conditioningandschemeoftesting Thisschemeoftestingisadditionaltothatdescribedi
33、nEN138191.Itshallbecarriedoutonadditionalsamples. 5.1.1Specimens Fourpairsofearmuffsshallbesubmittedfortesting.Theindividualearmuffcupsshallbenumbered1to8(orin thecasethatelectricalaudioinputsarenotfittedtobothcupsoftheearmuffs,1to4).EN3526:2002(E) 6 5.1.2 Conditioningandtestingatmosphere Allspecime
34、nsshallbeconditionedandtestedinanatmospherehavingatemperatureof22 o C 5 o Canda relativehumidityofnotmorethan85%,asrequiredinEN138191. 5.1.3 Schemeoftesting Theeightearmuffcups(orfourifelectricalaudioinputsarenotfittedtobothcups)shallbetestedforoutput levelsasdescribedin5.2. 5.2 Soundoutputlevels Th
35、eacousticmeasurementsofsoundoutputlevelsforearmuffswithelectricalaudioinputareunder consideration. Forthetimebeingandbecauseoftheurgentneed,suchmeasurementsmaybecarriedoutinaccordance withtestproceduresdescribedinAnnexB. 6 Informationsuppliedbythemanufacturer 6.1 Wearerinformation Thefollowinginform
36、ationforthewearer(inadditiontothatrequiredbyEN3521)shallbesuppliedwiththe earmuffs: a)thenumberofthisstandard,EN3526; b)anindicationastowhetherthehearingprotectorprovideselectricalaudioinput; c)thevaluesofthesoundoutputlevelsasdeterminedbytheproceduresdescribedintheAnnexB; d)recommendedstoragecondit
37、ionsbeforeandafteruse; e)electricalsafetyinformationrelatingtotheaudioinputfacilityorearmuffswithelectricalaudioinput,the statements: 1)”Thisearmuffisprovidedwithelectricalaudioinput.Thewearer should check correct operation before use.Ifdistortionorfailureisdetected,thewearershouldrefertothemanufact
38、urersadvice.“ 2)”WarningTheoutputoftheelectricalaudiocircuitofthishearingprotectormayexceedthedailylimit soundlevel.” f)theaddressfromwhichadditionalinformationcanbeobtained. Informationaccordingwith6.1shallbeprovidedatleastintheofficiallanguage(s)oftheEuropeanstateof destination. 6.2Additional info
39、rmation Thefollowinginformationshallbeavailablefromthemanufactureronrequest: a)resultsoftestsperformedinaccordancewiththisstandard;EN3526:2002(E) 7 b)thenameandcountryofthetestlaboratorywhichperformedthetestsspecifiedandthedateofthetests. Informationaccordingwith6.2shallbeprovidedatleastintheofficia
40、llanguage(s)oftheEuropeanstateof destination. 7Marking TherequirementsformarkinggiveninEN3521shallbeused.Thegenericmark“EN352”asspecifiedinEN 3521isused,sinceaproductmaymeetEN3521andEN3526simultaneously.EN3526:2002(E) 8 AnnexA (informative) Uncertaintyofmeasurementandinterpretationoftestresults Fore
41、achoftherequiredmeasurementsperformedinaccordancewiththisstandard,acorresponding estimateoftheuncertaintyofmeasurementshouldbeevaluated. Thisestimateofuncertaintyshouldbeappliedandstatedwhenreportingtestresults,inordertoenablethe userofthetestreporttoassessthereliabilityofthedata. Thefollowingprotoc
42、olwithregardtouncertaintyofmeasurementshouldbeappliedtotestresults: Ifthelimitvaluefortheparticulartestgiveninthestandardfallsoutsideoftherangeofvaluescalculatedfrom thetestdataplus/minustheestimateduncertaintyofmeasurement(U),thentheresultshouldbedeemedto beastraightforwardpassorfail(FiguresA.1andA
43、.2). Key 1 Resultofameasurement 2 Upperspecificationlimit(USL) 3 Specificationrange 4 Lowerspecificationlimit(LSL) FigureA.1ResultpassEN3526:2002(E) 9 Key 1 Resultofameasurement 2 Upperspecificationlimit(USL) 3 Specificationrange 4 Lowerspecificationlimit(LSL) FigureA.2Resultfail Ifthelimitvaluefortheparticulartestgiveninthestandardfallswithintherangeofvaluescalculatedfromthe testdataplus/minustheestimateduncertaintyofme
