GB 14711

ICS29.160.01K20NationalStandardofthePeople’sRepublicofChinaGB14711-2006SubstituteforGB14711-1993SafetyRequirementsofSmallandMediumSizeRotatingElectricalMachinesIssuedonAugust25,2006EffectivefromMarch1,2007IssuedbyGeneralAdministrationofQualitySupervision,InspectionandQuarantineoftheP.R.ChinaStandardizationAdministrationofthePeople'sRepublicofChinaGB14711-2006IContentsForeword…………………………………………………………………………………………………………………..III1Scope…………………………………………………………………………………………………………………….12Normativesourcesofstandards………………………………………………………………………………………….13Technicaltermsandexplanations………………………………………………………………………………………..24Generalrequirements…………………………………………………………………………………………………….25Structure………………………………………………………………………………………………………………….26Symbols…………………………………………………………………………………………………………………..67Tests………………………………………………………………………………………………………………………78Lowvoltage(ratedvoltage≤1,000V)ACmotor(includinguniversalmotor)…………………………………………129Highvoltage(ratedvoltage1,000V)ACmotor……………………………………………………………………….1310DCmotor………………………………………………………………………………………………………………1311Portableandauxiliarygenerator……………………………………………………………………………………….1412Variable-frequency&adjustable-speedmotor………………………………………………………………………..16GB14711-2006IIIForewordAllthetechnicalcontentofthestandardiscompulsory.ThestandardisconsistentwiththesafetyrequirementsinGB755-2000RotatingMachineRatingandPerformance.ThestandardisasubstituteforGB14711-1993GeneralSafetyRequirementsofSmallandMediumRotatingElectricalMachines,withthepresenttitleSafetyRequirementsofSmallandMediumSizeRotatingElectricalMachines.ThestandarddiffersfromGB14711-1993mainlyinthefollowingrespects:1.Standardwasrearranged;2.Thesafetyrequirementsofportable,auxiliary,andvariable-frequency&adjustable-speedmotorswereincluded;3.Tablesrelatedwereplacedatthebackofthisbook,foreasyreference.ThestandardisproposedbyChinaElectricalEquipmentIndustryAssociation.ThepreparationandmanagementofstandardisunderthesupervisionoftheChinaRotatingElectricalMachineStandardization&TechnologyCommittee(SAC/TC26).ShanghaiElectricalEquipmentResearchInstitutewasresponsibleforthedraftingofthestandard.Otherorganizationsthatparticipatedinthedraftinginclude:BeijingB.J.ElectricMotorCo.,Ltd.,ChongqingSailimengElectricMotorCo.,Ltd.,ShandongQiluElectricMotorManufacturingCo.,Ltd.,LanzhouElectricMotorCo.,Ltd.,ShanghaiUnitedElectricMotor(Group)Corporation,ZhejiangJinlongElectricMotorCo.,Ltd.,ShandongHualiElectricMotorCo.,Ltd.,JiangsuQingjiangElectricMotorCo.,Ltd.,KunmingElectricalEngineeringCo.,Ltd.,andShanxiElectricMotorManufacturingCo.,Ltd.MajordraftersincludeNiLixin,ChenWeihua,JinWeiwei,LiBaojin,LiXiuying,ZhangShengde,LiuJinyan,CaiJiagang,ZhouQi,TianZhigang,GaoWen’an,CuiHuajian,YeJinwu,FengJinquan,ZhouGuobao,ZhangBinandYueWeiping.ThestandardshallreplaceGB14711-1993fromtheeffectivedate.GB14711-1993isthefirstedition.Thisstandardisthefirstamendment.GB14711-20061SafetyRequirementsofSmallandMediumSizeRotatingElectricalMachines1Scope1.1Thestandardspecifiesthesafetyrequirementsofsmall/mediumgeneral-purposerotatingelectricalmachines(electricmotorandgenerator,hereinafterreferredtoas“motor”).1.2Thisstandardisnotapplicabletoastronauticmotors,tractionmotors,explosion-proofmotors,hoistandmetallurgicalmotors,shieldmotors.TestsofsmallpowermotorsproducedaccordingtoGB/T5171canalsorefertoGB12350.1.3Incaseothertypesofmotorsinvolvespecialrequirementsthatarenotcoveredinthisstandard,newstandardshouldbedeveloped.2NormativesourcesofstandardsThetermsandconditionsquotedfromthefollowingdocumentsbecamethetermsandconditionsofthisstandard.Wheredocumentsaredated,theirattachedmodificationlist(exclusiveofcorrections)ortherevisededitionisnotapplicabletothisstandard.Nevertheless,theconcernedpartiesareencouragedtoconsiderthelatesteditionsofthosedocumentswhenreachingagreementbasedonthisstandard.Wheredocumentsareundated,theirlatestversionsareapplicabletothisstandard.GB755-2000RotatingelectricalmachinesRatingandperformance(idtIEC60034-1:1996)GB/T825-1988Eyescrew(NEQISO3266:1984)GB1971RotatingelectricalmachinesCableterminalsymbolandsenseofrotation(GB1971-2006,60034-8:2002,IDT)GB/T2423.4-1993ElectricalandelectronicproductsenvironmentaltestsproceduresTestsDb:temperature&humiditytestingmethods(eqvIEC60068-2-30:1980)GB/T4207-2003CTIandPTItestingmethodsforsolidinsulationmaterialunderhumidconditions(IEC60112:1979,IDT)GB4706.1-1998HouseandsimilarpurposeappliancessafetyPartone:generalrequirements(eqvIEC60335-1:1991)GB/T4942.1-2001Rotatingelectricalmachinehousingprotectiongrading(IPcode)(idtIEC60034-5:1991)GB/T5169.11-1997ElectricalandelectronicproductsfirehazardtestsTestingmethodsGlowwiretestandguidelinesforthefinishedproducts(idtIEC60695-2-1/1:1994)GB/T5169.12-1999ElectricalandelectronicproductsfirehazardtestsTestingmethodsGlowwireflammabilitytestformaterials(idtIEC60695-2-1/2:1994)GB/T5465.2-1996Electricalequipmentdiagramsandsymbols(idtIEC60417:1994)GB/T11020-1989Flammabilitytestingmethodsforsolidinsulationmaterialexposedtoignitionsource(eqvIEC60707:1981)GB/T13002Built-inthermalprotectorofrotatingelectricalmachinesRotatin