1、INTERNATIONAL STANDARD IEC 61029210 Firstedition 199806 Safetyoftransportablemotoroperated electrictools Part210: Particularrequirements forcuttingoffgrinders Scuritdesmachinesoutilslectriques semifixes Partie210: Rglesparticulirespour lestouretscouper Referencenumber IEC61029210:1998Numbering Asfro
2、m1January1997allIECpublicationsareissuedwithadesignationinthe60000series. Consolidatedpublications ConsolidatedversionsofsomeIECpublicationsincludingamendmentsareavailable.For example,editionnumbers1.0,1.1and1.2refer,respectively,tothebasepublication,thebase publicationincorporatingamendment1andtheb
3、asepublicationincorporatingamendments1 and2. Validityofthispublication ThetechnicalcontentofIECpublicationsiskeptunderconstantreviewbytheIEC,thus ensuringthatthecontentreflectscurrenttechnology. InformationrelatingtothedateofthereconfirmationofthepublicationisavailableintheIEC catalogue. Information
4、onthesubjectsunderconsiderationandworkinprogressundertakenbythe technicalcommitteewhichhaspreparedthispublication,aswellasthelistofpublications issued,istobefoundatthefollowingIECsources: IECwebsite* CatalogueofIECpublications Publishedyearlywithregularupdates (Onlinecatalogue)* IECBulletin Availabl
5、ebothattheIECwebsite*andasaprintedperiodical Terminology,graphicalandletter symbols Forgeneralterminology,readersarereferredtoIEC60050: InternationalElectrotechnical Vocabulary(IEV). Forgraphicalsymbols,andlettersymbolsandsignsapprovedbytheIECforgeneraluse, readersarereferredtopublicationsIEC60027:
6、Lettersymbolstobeusedinelectrical technology,IEC60417: Graphicalsymbolsforuseonequipment.Index,surveyandcompilation ofthesinglesheets and IEC60617: Graphicalsymbolsfordiagrams. * Seewebsiteaddressontitlepage.INTERNATIONAL STANDARD IEC 61029210 Firstedition 199806 Safetyoftransportablemotoroperated e
7、lectrictools Part210: Particularrequirements forcuttingoffgrinders Scuritdesmachinesoutilslectriques semifixes Partie210: Rglesparticulirespour lestouretscouper CommissionElectrotechniqueInternationale InternationalElectrotechnicalCommission Forprice,seecurrentcatalogue IEC1998Copyrightallrightsrese
8、rved Nopartofthispublicationmaybereproducedorut ilizedinanyformorbyanym eans,electronicormechanical,including photocopyingandmicrofilm,withoutpermissioninwritingfromthepublisher. InternationalElectrotechnicalCommission 3,ruedeVarembGeneva,Switzerland Telefax:+41229190300 email:inmailiec.ch IECwebsit
9、ehttp:/www.iec.ch J PRICECODE2 61029210IEC:1998(E) CONTENTS Page FOREWORD . 3 Clause 1 Scope . 5 2 Definitions. 5 3 Generalrequirements 6 4 Generalnotesontests 6 5 Rating. 6 6 Classification 6 7 Marking. 6 8 Protectionagainstelectricshock . 7 9 Starting. 7 10 Inputandcurrent. 7 11 Heating . 7 12 Lea
10、kagecurrent 7 13 Radioandtelevisioninterferencesuppression . 7 14 Protectionagainstingressofforeignbodiesandmoistureresistance . 7 15 Insulationresistanceandelectricstrength . 7 16 Endurance 8 17 Abnormaloperation. 8 18 Stabilityandmechanicalhazards. 8 19 Mechanicalstrength 11 20 Construction 11 21
11、Internalwiring . 12 22 Components 12 23 Supplyconnectionandexternalflexiblecablesandcords 12 24 Terminalsforexternalconductors 12 25 Provisionforearthing 12 26 Screwsandconnections 12 27 Creepagedistances,clearancesanddistancethroughinsulation . 12 28 Resistancetoheat,fireandtracking 12 29 Resistanc
12、etorusting. 12 30 Radiation 12 Figures 13 Annexes 1761029210IEC:1998(E) 3 INTERNATIONALELECTROTECHNICALCOMMISSION SAFETYOFTRANSPORTABLEMOTOROPERATED ELECTRICTOOLS Part2:Particularrequirementsfor cuttingoffgrinders FOREWORD 1) TheIEC(InternationalElectrotechnicalCommission)isaworldwideorganizationfor
13、standardizationcomprising allnationalelectrotechnicalcommittees(IECNationalCommittees).TheobjectoftheIECistopromote internationalcooperationonallquestionsconcerningstandardizationintheelectricalandelectronicfields.To thisendandinadditiontootheractivities,theIECpublishesInternationalStandards.Theirpr
14、eparationis entrustedtotechnicalcommittees;anyIECNationalCommitteeinterestedinthesubjectdealtwithmay participateinthispreparatorywork.International,governmentalandnongovernmentalorganizationsliaising withtheIECalsoparticipateinthispreparation.TheIECcollaboratescloselywiththeInternationalOrganization
15、 forStandardization(ISO)inaccordancewithconditionsdeterminedbyagreementbetweenthetwo organizations. 2) TheformaldecisionsoragreementsoftheIEContechnicalmattersexpress,asnearlyaspossible,an internationalconsensusofopinionontherelevantsubjectssinceeachtechnicalcommitteehasrepresentation fromallinteres
16、tedNationalCommittees. 3) Thedocumentsproducedhavetheformofrecommendationsforinternationaluseandarepublishedintheform ofstandards,technicalreportsorguidesandtheyareacceptedbytheNationalCommitteesinthatsense. 4) Inordertopromoteinternationalunification,IECNationalCommitteesundertaketoapplyIECInternat
17、ional Standardstransparentlytothemaximumextentpossibleintheirnationalandregionalstandards.Any divergencebetweentheIECStandardandthecorrespondingnationalorregionalstandardshallbeclearly indicatedinthelatter. 5) TheIECprovidesnomarkingproceduretoindicateitsapprovalandcannotberenderedresponsibleforany
18、equipmentdeclaredtobeinconformitywithoneofitsstandards. 6) AttentionisdrawntothepossibilitythatsomeoftheelementsofthisInternationalStandardmaybethesubject ofpatentrights.TheIECshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. ThispartofInternationalStandardIEC61029hasbeenpreparedbysub
19、committee61F:Safety ofhandheldmotoroperatedelectrictools,ofIECtechnicalcommittee61:Safetyofhousehold andsimilarelectricalappliances. Thetextofthisstandardisbasedonthefollowingdocuments: FDIS Reportonvoting 61F/235/FDIS 61F/242/RVD Fullinformationonthevotingfortheapprovalofthisstandardcanbefoundinthe
20、reporton votingindicatedintheabovetable. Thispart2istobeusedinconjunctionwiththeIEC610291. Thispart2supplementsormodifiesthecorrespondingclausesinIEC610291,soasto convertitintotheIECstandard:Safetyrequirementsforcuttingoffgrinders.4 61029210IEC:1998(E) Whereaparticularsubclauseofpart1isnotmentionedi
21、nthispart2,thatsubclauseapplies asfarasisreasonable.Wherethisstandardstates“addition”,“modification”or“replacement”, therelevanttextinpart1istobeadaptedaccordingly. NOTES 1 Thefollowingprinttypesareused: requirements:inromantype; testspecifications:initalictype; notes:insmallromantype. 2 Subclauses,
22、notesandfigureswhichareadditionaltothoseinpart1arenumberedstartingfrom101. Abilingualversionofthisstandardmaybeissuedatalaterdate.61029210IEC:1998(E) 5 SAFETYOFTRANSPORTABLEMOTOROPERATED ELECTRICTOOLS Part2:Particularrequirementsfor cuttingoffgrinders 1Scope Thisclauseofpart1isapplicable,exceptasfol
23、lows: 1.1 Addition: Thisstandardappliestocuttingoffgrindersintendedmainlyforcuttingmetalwithaplain abrasivecuttingoffwheelwhosediameterdoesnotexceed406mmandhasaratedperipheral speednotexceeding80m/s. 2Definitions Thisclauseofpart1isapplicable,exceptasfollows: 2.21 Replacement: normalload loadobtaine
24、dwhenthetoolisoperatedcontinuously,withthetorqueappliedtothespindle suchthattheinput,inwatts,isequaltotheratedinput NOTEThenormalloadisbasedontheratedvoltageorontheupperlimitoftheratedvoltagerange. Addition: 2.101 cuttingoffgrinders machinedesignedtocutmetalbymeansofaplainabrasivecuttingoffwheelwhic
25、hisfixedon thetoolspindle.Thetoolspindleismountedontheouterendofanarmwhichispivotedatits innerendonthemachineframe.Themachinetablehasaclampingdevicetosecurethe workpiece.Thetablecanbetraversedtowardsthecuttingoffwheel(seefigure101). 2.102 toolspindle spindleofthecuttingoffgrinderwhichsupportsandtran
26、smitstherotationoftheplainabrasive cuttingoffwheel 2.103 guard devicewhichpartiallyenclosestheplainabrasivecuttingoffwheelinordertoprotecttheusers againstaccidentalcontactwiththewheelinnormaluseandagainsttheejectionoffragments ofthewheelintheprotectedareainthecaseofbreakageofthewheel 2.104 flangeass
27、embly meansprovidedtoclamptheplainabrasivecuttingoffwheeltothemachinespindle6 61029210IEC:1998(E) 2.105 straightrecessedflange flangewithcentralrecesssuitableforaplainabrasivecuttingoffwheel(seefigure106) 2.106 workpiecefixingdevice deviceintendedtosupportorholdthepiecetobeworked 3 Generalrequiremen
28、ts Thisclauseofpart1isapplicable. 4 Generalnotesontests Thisclauseofpart1isapplicable. 5Rating Thisclauseofpart1isapplicable. 6Classification Thisclauseofpart1isapplicable. 7Marking Thisclauseofpart1isapplicable,exceptasfollows: 7.1 Addition: ratednoloadspeedinrev/min; maximumdiameter Dofthewheeltob
29、eused; indicationofdirectionofrotationoftheabrasivewheel. 7.6 Addition: Thedirectionofrotationofthewheelshallbeindicatedonthetoolbyanarrowraisedorsunk, orbyothermeansnotlessvisibleandindelible. 7.13 Addition: Thehandbookorinformationsheetshallincludeallthenecessaryinformationforsafeworking withcutti
30、ngoffgrinders,suchasmethodofoperation,abrasivewheelchange,maintenance, assembly,transportation,etc.61029210IEC:1998(E) 7 Inaddition,thefollowinginstructionsshallbegiven: wearprotectiveglasses; donotusedamagedabrasivewheels; donotusethecuttingoffgrinderswithoutguardsinposition; useonlyabrasivewheelsr
31、ecommendedbythemanufacturerwhichhavemarkedspeed equalorgreatertothatmarkedonthemachine; readtheoperatinginstructionssuppliedbythewheelmanufacturer. NOTESketchesmaybeusedtoillustratethemodesofoperation. Inaddition,thefollowinginformationshallbegiven: howtoconnectthedustcollectiondevice,ifany; forcutt
32、ingoffgrindersequippedwithstraightsidedflanges,therecommendedthicknessof plainabrasivecuttingoffwheelsandthesizeoftheholeinthewheel. 8 Protectionagainstelectricshock Thisclauseofpart1isapplicable. 9Starting Thisclauseofpart1isapplicable. 10 Inputandcurrent Thisclauseofpart1isapplicable. 11Heating Th
33、isclauseofpart1isapplicable. 12Leakage current Thisclauseofpart1isapplicable. 13 Radioandtelevisioninterferencesuppression Thisclauseofpart1isapplicable. 14 Protectionagainstingressofforeignbodiesandmoistureresistance Thisclauseofpart1isapplicable. 15 Insulationresistanceandelectricstrength Thisclau
34、seofpart1isapplicable.8 61029210IEC:1998(E) 16Endurance Thisclauseofpart1isapplicable. 17 Abnormaloperation Thisclauseofpart1isapplicable. 18 Stabilityandmechanicalhazards Thisclauseofpart1isapplicable,exceptasfollows: 18.1Addition: Cuttingoffgrindersshallbeequippedwithanadequateguardingsystem,which
35、cannotbe removedwithouttheaidofatool. Theguardingsystemshallcomplywiththerequirementsof18.1.101. NOTEOthermeansofachievingthenecessarydegreeofmechanicalsafetyareallowedprovidedtheseare equallyeffectiveandreliableasthosespecified. 18.1.101 Guards Guardsshallbeprovidedaspartofacuttingoffgrinder. Thepo
36、rtionoftheabrasivewheelwhichisnotperformingthecuttingactionshallbecompletely enclosedbyafixedguard. Theremainingpartoftheabrasivewheelshallbeprotectedbyamovableguardwhichcovers theabrasivewheelrimonbothsidesandwhichshallreturnautomaticallytoitsrestposition whentheabrasivewheeliswithdrawnfromtheworkp
37、iece. Theguardsshallcomplywiththerequirementsoutlinedhereafter. 18.1.102 Thicknessoftheguards Table101Minimumthicknessoftheguard D Tensilestrength N/mm 2 mm 200 390 390 P mm J mm P mm J mm 250 3 1,5 1,5 1,5 250 D 300 4221 , 5 300 D406 4321 , 5 where D isthemaximumdiameterofabrasivewheel; P isthethic
38、knessoftheperipheryofguard; J isthethicknessofthesideoftheguard.61029210IEC:1998(E) 9 Thedesignandconstructionofguardsshalleither beinaccordancewiththethicknessandmaterialintable101; or complywiththerequirementsbelow. Thegrindershallbefixedinasuitableposition. Anonreinforcedabrasiveproductofmaximums
39、izeandthicknessasspecifiedbythe manufactureroraparticulartestwheelofthesameshapeandmass,shallberunattherated speedofthegrinder.Thewheelenclosedbytheguardshallbesubjecttothefollowingtest: aburstshallbecausedbyaprojectiletobefiredatthewheelorbyanothersuitable method.Thetestshallbecarriedoutbyburstingt
40、hreewheelsinsuccessioninthesame wheelguard; thewheelguardshallremainattachedtothegrinder,remaineffective,andshallnotshow anyvisiblecrackswhenexaminedbyarecognisedmethodofcrackdetection,e.g.dye penetrationormagneticcrackdetection.Minordeformationsandsuperficialdamageare acceptable.Anyfixingdevices,e.
41、g.clampingdevicesandbolts,shallremaineffectiveand subjecttoacriticalexaminationfordamage. NOTEThistestisdangerousandshallbecarriedoutonlyinaproperlyconstructedandequippedtestfacility. Thetestshallbeperformedinsideafullyprotectedenclosurewhichcancontainallthewheelfragmentsandother debris. 18.1.103 Fi
42、xedguard Thefixedguardshallbedesignedinsuchawaythattheopeninganglealpha( a )shallnot exceed165(seefigure102). Topreventejectionofbrokenpartsofthewheelinfrontofthemachine,thelowerfrontpartof theguardshallbebelowthehorizontalplanecrossingthespindleaxis,forallpositionsofthe arm( x 0). IfthemovableguardismadeofasteelsheetofatleasttheguardthicknessPandifit overlapsthefixedguard,itcanbeusedtoensureguardingagainstwheelbreakage;inthis case,thepreviousrequirement x0doesnotapply. 18.1.104 Movableguard Inadditiontothefixedguard,themovableguardshallbedes
