1、BRITISH STANDARD BS EN 1149-3:2004 Protective clothing Electrostatic properties Part 3: Test methods for measurement of charge decay The European Standard EN 1149-3:2004 has the status of a British Standard ICS 13.340.10 Copyright European Committee for Standardization Provided by IHS under license
2、with CEN Not for Resale No reproduction or networking permitted without license from IHS BS EN 1149-3:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 5 May 2004 BSI 5 May 2004 ISBN 0 580 43736 1 National foreword This British Standard is
3、 the official English language version of EN 1149-3:2004. The UK participation in its preparation was entrusted by Technical Committee PH/3, Protective clothing, to Subcommittee PH/3/1, Clothing for protection against general hazards, which has the responsibility to: A list of organizations represen
4、ted on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”
5、, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport 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
6、 immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate
7、 them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 20, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publicatio
8、n Amd. No. Date Comments Copyright European Committee for Standardization Provided by IHS under license with CEN Not for Resale No reproduction or networking permitted without license from IHS - - -EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN11493 April2004 ICS13.340.10 Englishversion Protectiv
9、eclothingElectrostaticpropertiesPart3:Test methodsformeasurementofchargedecay VtementsdeprotectionPropritslectrostatiques Partie3:Mthodesdessaipourlamesuredelattnuation delacharge SchutzkleidungElektrostatischeEigenschaftenTeil3: PrfverfahrenfrdieMessungdesLadungsabbaus ThisEuropeanStandardwasapprov
10、edbyCENon2February2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheC
11、entralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenati
12、onalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATIO
13、N COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN11493:2004:E Copyright European Committee for Standardization Provided by IHS under license
14、with CEN Not for Resale No reproduction or networking permitted without license from IHS - - -EN11493:2004(E) 2 Content page Foreword3 1 Scope 5 2 Normativereferences 5 3 Termsanddefinitions. .5 4 Testmethods 6 5 Reporting 12 AnnexA (informative) Explanatorynotes . .19 AnnexZA (informative) Clauseso
15、fthisEuropeanStandardaddressingessentialrequirementsor otherprovisionsofEUDirectives 20 Copyright European Committee for Standardization Provided by IHS under license with CEN Not for Resale No reproduction or networking permitted without license from IHS - - -EN11493:2004(E) 3 Foreword Thisdocument
16、(EN11493:2004)hasbeenpreparedbyTechnicalCommitteeCEN/TC162“Protectiveclothing includinghandandarmprotectionandlifejackets”,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyOctober2004,andc
17、onflictingnationalstandardsshallbewithdrawnatthelatest byOctober2004. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropean FreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s). ForrelationshipwithEUDirective(s),seeinformativeannexZA,whichisanintegr
18、alpartofthisdocument. AnnexAisinformative. EN1149consistsofthefollowingparts,underthegeneraltitle“ProtectiveclothingElectrostaticproperties“: Part1:Surfaceresistivity(Testmethodsandrequirements ) Part2:Testmethodformeasurementoftheelectricalresistancethroughamaterial(verticalresistance) Part3:Testme
19、thodsformeasurementofchargedecay Part 4 1) :Garmenttests Part 5 1) :Performancerequirements AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Cyprus,CzechRepublic,Denmark, Estonia,Finland,Fran
20、ce,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta, Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. 1) Incourseofpreparation. Copyright European Committee for Standardization Provided by IHS under license with CEN Not for
21、Resale No reproduction or networking permitted without license from IHS - - -EN11493:2004(E) 4 Introduction ThisEuropeanStandardispartofaseriesoftestmethodsandrequirementsforelectrostaticpropertiesof protectiveclothing.Differentpartsarenecessary,becauseofthevariousfieldsofapplicationanddiversenature
22、of garmentmaterials. Twotestmethodsaredescribedformeasuringtherateofdissipationofelectrostaticchargeofgarmentmaterials, i.e.thechargedecay.Inbothcases,chargeismonitoredbyobservationoftheelectrostaticfielditgeneratesand thisisdoneusingnoncontactingfieldmeasuringinstruments.Theprincipaldifferencebetwe
23、enthemethodsisthe techniqueusedtogeneratetheelectrostaticcharge.Triboelectricchargingreliesonthechargegeneratedastwo materialscomeintocontact,rubtogetherandsubsequentlyseparate.Inductioncharginginvolvesanelectrode placedbeneaththetestsurfaceandisraisedtoadefinedpotential.Inducedchargeonthetestmateri
24、alinfluences thenetfieldthatisobservedbyafieldmeasuringprobepositionedabovethetestsurface. Copyright European Committee for Standardization Provided by IHS under license with CEN Not for Resale No reproduction or networking permitted without license from IHS - - -EN11493:2004(E) 5 1Scope ThisEuropea
25、nStandardspecifiesmethodsformeasuringthedissipationofelectrostaticchargefromthesurfaceof materialsforgarments.Thetestmethodsareapplicabletoallmaterials,includinghomogeneousmaterialsand inhomogeneousmaterialswithsurfaceconductingfibresandcoreconductingfibres. 2 Normativereferences ThisEuropeanStandar
26、dincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedin
27、itbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN340:2003, ProtectiveclothingGeneralrequirements. EN11491:1995, ProtectiveclothingElectrostaticpropertiesPart1:Surfaceresistivity(testmethodsand requirements). 3 Termsanddefinitions
28、ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsofEN340:2003andEN11491:1995 togetherwiththefollowingapply. 3.1 surfaceconductingfibre fibreinwhichtheconductingcomponentisexposedatthesurface.Dependingonthecrosssectionofthefibre,all oronlypartofitssurfacemaybeconducting 3.2 coreconductingfi
29、bre fibreinwhichtheconductingcomponentiscompletelyencapsulatedinnonconductingmaterial 3.3 chargedecay migrationofchargeacrossorthroughamaterialleadingtoareductionofchargedensityorsurfacepotentialatthe pointwherethechargewasdeposited 3.4 Electricfieldstrength 3.4.1 testmethod1 E 0 maximumelectricfiel
30、dstrengthaftertriboelectriccharging(kV/m); E 30 electricfieldstrength30safter E 0 (kV/m) 3.4.2 testmethod2 E max electricfieldstrengthindicatedontherecordingdevicewithnotestspecimenpresent(kV/m); E R maximumelectricfieldstrengthindicatedontherecordingdevicewiththetestspecimeninthemeasuring position
31、Copyright European Committee for Standardization Provided by IHS under license with CEN Not for Resale No reproduction or networking permitted without license from IHS - - -EN11493:2004(E) 6 3.5 halfdecaytime t 50 thetimetakenfortheindicatedfieldstrengthtodecayto E max /2(s) 3.6 shieldingfactor S re
32、lationshipbetween E max and E R calculatedas: max 1 E E S R - = 4Test methods 4.1 Samplepreparationandconditioningapplicableforbothtestmethods 4.1.1Pretreatment Thetestsampleshallbepretreatedaccordingtothespecificclothingstandardorotherwiseshallundergofive cyclesofcleaningaccordingtoEN340. NOTE Pret
33、reatmentisnotrequiredforgarmentsnotintendedtobecleanedinuse(e.g.forsingleusegarments). 4.1.2 Atmosphereforconditioningandtesting Unlessotherwisespecified,thetestspecimensshallbeconditionedforatleast24hoursinanatmosphereof (23 1) Cand(25 5)%relativehumidity.Testingshallbeperformedinthesameatmosphere.
34、 4.2Triboelectriccharging(testmethod1) 4.2.1Principle Testmaterialsarechargedbyrubbingagainstcylindricalrodsmountedonaverticallyrunningslider.Theelectrical fieldstrengthfromthechargegeneratedonthetestmaterialisobservedandrecordedusinganelectrostatic fieldmeterconnectedtoagraphicalrecordingdevice. Co
35、pyright European Committee for Standardization Provided by IHS under license with CEN Not for Resale No reproduction or networking permitted without license from IHS - - -EN11493:2004(E) 7 4.2.2Equipment 4.2.2.1General ThetestapparatusisshowninFigure1. 4.2.2.2 Cylindricalrods Tworodsoflength(100 5)m
36、mwithacircularcrosssectionofdiameter(15,0 0,5)mmareused.Therodsare attachedtoametalsliderinaparallelfashionwithoutfreedomofrotationsuchthatthebottomofthefirstrodis horizontallyinlinewiththetopofthesecondrodandwithadistanceof(15 1)mmbetweentheirnearestedges (seeFigure1). Twopairsofrodsarerequired,one
37、pairmadefromhighdensitypolyethylene(HDPE)andonepairmadefrom aluminium.Thefixtureusedtoattachtherodstotheslidershallallowrodstobeinterchanged. TheHDPErodsshallhaveaspecificgravityof(999 10)kg/mandshorehardnessDof63;surfaceresistanceof 10 6 W andvolumeresistivityof 10 6 W cm. Thematerialforaluminiumro
38、dsshallbe: AlMgSi(3.3207;6060) NOTE ProduceroftheHDPEmaterial(PEEL):SIMONAAG,D55606Kirn.Thisinformationisgivenfortheconvenience ofusersofthisstandardanddoesnotconstituteanendorsementbyCEN/TC162oftheproductnamed.Equivalentproducts maybeusediftheycanshowntoleadtothesameresults. 4.2.2.3 Sliderandsuppor
39、tstructure Theslidertowhichthecylindricalrodsareattachedrunsononeormoreverticalguiderail(s).Thestartpositionof theslideristhehighestpointontheguiderail(s).Theslideriseitherallowedtofallfreelyunderitsownweight,or isdrivendowntheguiderail(s)byasuitablemotor.Intheformercase,asuitableclampisrequiredtolo
40、ckthe sliderinthestartpositionpriortoeachmeasurement.Theslider,guiderail(s)andsupportframeworkshallbeof anydesignthatsatisfiestherequirementofallowingthecylindricalrodstomovedownatavelocityof (0,20 0,02)m/sinaverticaldirectionwithoutsignificanttwistingorrotation.Allmetalworkshallbeconnectedto earth.
41、 4.2.2.4 Specimenclampandtensioningdevice Theupperedgeofthespecimenisclampedtoarigidstructureandistensionedbyattachingafreehangingclamp tothebottomedge.Thefreehangingclampshallbesuchthattheloadevenlyappliedtothefullwidthofthe specimen.Thefixedclampshallbemetalandshallbeconnectedtoearth.Theloadapplie
42、dtothetestspecimen bythebottomclampshallbe(1,30 0,05)N.Incaseelongationofthetestspecimenislargerthan5%thenaload of(0,2 0,05)Nshallbeused. 4.2.2.5Fieldmeter Anelectrostaticfieldmetermeetingatleastthefollowingspecificationispositionedwithitssensingaperture (50 5)mmfromtheplaneofthetestspecimen(seeFigu
43、re2)whenthesliderhasdecended: range:atleast1kV/mto200kV/m; resolution: 1kV/m; responsetime: 10ms; zerodrift: 0,5kV/m(longterm)orbetter. Copyright European Committee for Standardization Provided by IHS under license with CEN Not for Resale No reproduction or networking permitted without license from IHS EN11493:2004(E) 8 Thefieldmetershallhaveanoutputfunctionthatallowsconnectiontoarecordingdevice. NOTE Careshouldbetakentoavoidpresenc
