搜索
Heat-ShrinkTubesFunctionalRequirementsPreviousissuesTL82324:1993-06ChangesThefollowingchangeshavebeenmadeascomparedtoTL82324:1993-06:–StandardeditoriallyrevisedScopeTechnicalSupplySpecificationTL82324containsrequirementsandtestsforheat-shrinktubesandconnectionssealedwiththem.Itappliestoheat-shrinkableplastictubeswithaninsidelayerofthermoplasticadhesive(hereinafterreferredtoasheat-shrinktubesforshort),whichareusedfor100%waterproofinsulationofelectricalconnections.RequirementsBasicsupplyrequirementsApprovaloffirstsupplyandchangesaccordingtoVolkswagenstandardVW01155.AvoidanceofhazardoussubstancesaccordingtoVW91101.GeneralinformationElectricalconnectionsmustbemadebycrimping,welding,pinching,orsplicingorbymeansofmountedcontactpartssuchastubularandringcablelugs,etc.122.12.2GroupStandardTL82324Issue2008-04Class.No.:8ME00Descriptors:heat-shrinktubes,tubes,tubeCheckstandardforcurrentissuepriortousage.Thiselectronicallygeneratedstandardisauthenticandvalidwithoutsignature.TheEnglishtranslationisbelievedtobeaccurate.IncaseofdiscrepanciestheGermanversionshallgovern.Numericalnotationacc.toISOpractice.Page1of10TechnicalresponsibilityStandardsdepartmentEEK/2Dr.RudolfWilleTel.:+49-5361-9-22991EKTC/4OlafGuseEKTCTel.:+49-5361-9-32438ManfredTerlindenConfidential.Allrightsreserved.NopartofthisdocumentmaybetransmittedorreproducedwithoutpriorpermissionofaStandardsDepartmentoftheVolkswagenGroup.PartiestoacontractcanonlyobtainthisstandardviatheB2Bsupplierplatform©VOLKSWAGENAGVWNORM-2007-10eTechnicalspecificationformaterialIfavailable,informationregardingthematerialandmaterialpropertiesfortheheat-shrinktubeandadhesiveasindividualcomponentsaswellasthecompositeoftheheat-shrinktube/adhesivearetobeobtainedfromtheTechnicalSupplySpecifications(TL)orthedrawing.Application-relatedrequirementsSeeTable1.Table1Storagetemperature+40°C/3monthsNopropertychangesorimpairmentofthemanipulationprocessTemperatureincontinu‐ousoperation-40°Cto+125°C/3000hSpraytemperature+135°C/48hCorrosionbehaviorNocorrosionoftheCuconductorLeaktightnessandinsula‐tionresistanceTestingandrequirementaccordingtoSec‐tion3.2ThermalagingTestingandrequirementaccordingtoSec‐tion3.3ThermaloverloadTestingandrequirementaccordingtoSec‐tion3.4ThermalshockTestingandrequirementaccordingtoSec‐tion3.5EnvironmentalcycletestTestingandrequirementaccordingtoSec‐tion3.6Compressivestrengthun‐derheatTestingandrequirementaccordingtoSec‐tion3.7Low-temperatureimpactstrengthTestingandrequirementaccordingtoSec‐tion3.8AbrasionresistanceTestingandrequirementaccordingtoSec‐tion3.9ResistancetooperatingmaterialTestingandrequirementaccordingtoSec‐tion3.10ShearstrengthTestingandrequirementaccordingtoSec‐tion3.11AppearanceTheheat-shrinktubesmustbefreeofdefectsintheas-receivedcondition.Cracks,holes,gaseousorsolidinclusions,unevenadhesivecoatingsandobliquecutedgesarenotpermissible.2.32.42.5Page2TL82324:2008-04DimensionsThelengthanddiameteroftheheat-shrinktubetobeusedmustbematchedtotheconnectiontype(characterizedbycross-sectionandnumberofconductors).Thesuppliermustspecifyanddocumentguidelinesforthediameteroftheheat-shrinktubethatissuitableforaconnection.Theselectedtubelengthmustbesuchthattheconductorinsulationoftheheat-shrinktubeisover‐lappedbyatleast10mmoneachendaftertheshrinkingprocess.ColorBeforetheshrinkingprocess,theheat-shrinktubemustbetransparenttoadegreethatenablesexactpositioninginthetube(appliesonlytosplices).MarkingEachheat-shrinktubemusthavebothamanufacturer'scodeaccordingtoVW10540-1aswellasamarkingfromwhichitsdiameterisevident.Themarkingsmustbeunequivocallyrecognizableaftertheshrinkingprocess.GeneralrequirementsfortheshrinkingprocessThetemperatureandtimeparameterswithregardtotheshrinkingprocessmustbematchedtotheconnectionandtheheat-shrinktubesoastominimizethethermalloadontheconductorinsulation.Thesuppliermustspecifyanddocumentappropriateguidelinesfortheshrinkingprocessparameters.Theshrinkingprocessmustnotalterthepropertiesoftheconductorinsulation.Theinsulationmaterialsontheindividualconductorsmustnotbemechanicallydamaged,hardenedorfusedduringtheshrinkingprocess.Requirementfortheconnection(appliesonlytosplices)Thedistanceabetweentheendoftheconductorinsulationandthesplice(seeFigure1)mustbebetween3mm(minimum)and6mm(maximum):a=3mm+3mm.Figure12.62.72.82.92.10Page3TL82324:2008-04TestsGeneralinformationSpecimensAspecimenreferstoasealedconnectionmanufacturedunderstandardproductionconditions,ifpossible.Thelengthoftheconductorsmustbeatleast250mm.OnthebasisoftheguidelinesdefinedaccordingtoSection2.6,15specimensforeachofthreespecificconfigurations,thatis,–theminimumnumberofconductorsandtheminimumtotalconductorcross-section,–anaveragenumberofconductors,and–themaximumnumberofconductorsandthemaximumtotalconductorcross-section,mustbeproducedandtestedforeachheat-shrinktubediameterineachofthetests.PreparationofspecimensPriortoeachindividualtest,thespecimensmustbetestedforleaktightnessasdefinedinSec‐tion3.2.ConductorinsulationofspecimensTheconductorinsulationmustbedesignedforthethermalconditions