线路施工修理二

导线修理(20-10-13)1导线修理2导线修理(20-10-13)GeneralConditionsfortheRepairofWireandCable-Theconditionthatisthecauseofthedamagemustberemovedtopreventsubsequentdamage-Arepairmustbedonewithcleanhandsandcleantoolstopreventcontaminationthatcancauseabadsealoftheinsulationmaterials-Therepairispermanent,unlessitisspecifieddifferentlyintheapplicablerepairconditionsorintheapplicablerepairprocedure3导线修理(20-10-13)-Arepairmustnotbeputinaconduit-Arepairmustnotbeputinaconnectorbackshellorabackshelladapter-Arepairmustnotbeputonabendofawireoracable-Arepairmustnotbeputonawireharnesswherethewireharnessisfrequentlybent;forexample,aninstrumentpanelorahingeddoor.GeneralConditionsfortheRepairofWireandCable4导线修理(20-10-13)GeneralConditionsfortheSelectionofPartsandMaterialsforaRepair-TheTemperatureGradeoftheinsulationmaterialsfortherepairtheinsulationofawireorthejacketofacablemustbethesameasorhigherthantheTemperatureGradeofthewireorthecable-Ifitisnecessarytorepairdamageofawireoracablewithasegmentofwireorcable,thesegmentmusthavethesamepartnumberasthedamagedwireorcable.5导线修理(20-10-13)NecessaryMaterialsHEATSHRINKABLESLEEVESINSULATIONMATERIALS:FilmStrip/TapePROTECTIVEMATERIALS:Tape6导线修理WireandCableDamageandRepairConditions:UnshieldedWireRepairisnecessarywhenthesetypesofdamageoccur:序列号损坏状态修理方案1Damagetotheconductortherepairwithasplice2DamagethatgoesthroughtheprimaryinsulationWindthetape3Thebondbetweentheoverlapsofthetapeoftheinsulationisbrokenforalengthmorethan50percentofthediameterofthewire;Windthetape4DamagethatgoesintoorthroughtheinsulationofaspliceassemblywhentheconductorsplicedoesnothavedamageWindthetape7导线修理WireandCableDamageandRepairConditions:UnshieldedWireRepairisnotnecessarywhenthesetypesofdamageoccur:序列号损坏状态1Afoldintheinsulationatabend2Asmallscratchonthesurfaceoftheinsulation3Abrasionthatmakesthesurfaceoftheinsulationrough4Thebondbetweentheoverlapsofthetapeoftheinsulationisbrokenforalengththatislessthan50percentofthediameterofthewire.89导线修理导线修理WireandCableDamageandRepairConditions:ShieldedWireRepairisnecessarywhenthesetypesofdamageoccur:序列号损坏状态修理方案1Damagetotheconductortherepairwithasplice2Damagetotheprimaryinsulationtherepairwithasplice3Damagetotheshieldismorethan1inchinlengthormorethan25percentofthecircumferenceoftheshield,therepairwithasplice4Damagetotheshieldislessthan1inchinlengthandlessthan25percentofthecircumferenceoftheshield;TapeandTies10导线修理导线修理WireandCableDamageandRepairConditions:ShieldedWireRepairisnecessarywhenthesetypesofdamageoccur:序列号损坏状态修理方案5Damagethatgoesthroughthejacket,buttheshieldhasnodamageWindthetape6DamagethatgoesintothejacketWindthetape7Damagethatgoesintotheinsulationoftheshieldspliceassembly,buttheshieldhasnodamageWindthetape8Thebondbetweentheoverlapsofthetapeofajacketisbrokenforalengthmorethan50percentofthediameterofthewireWindthetape11导线修理12导线修理RepairoftheInsulationofWireandCable：Windthetape步骤号修理内容1Removeloosepiecesofinsulationandroughedgesattheareaofthedamage.2Cleantheinsulationwithisopropylalcohol.3fillinthecavity:(a)MakeaselectionofaTemperatureGradeDfilmstrip(b)Windthenecessarylayersoffilmstripontheinsulationtofillthecavityandmakeasmoothsurface.4Windtwolayersofthetapeonthedamagedarea.5Assemblealacingtapewireharnesstie13导线修理14导线修理15导线修理RepairofWirewithaSpliceAssembly步骤号修理内容1Removethedamagedlengthofthewire.(a)Ononesideofthedamage,cutthewire.(b)Ontheothersideofthedamage,cutthewire.Makesurethattheendofthewireisperpendiculartothelongitudinalaxisofthewire.2Cleantheinsulationwithalcohol.Makesure:-Tocleantheareaoftheinsulationfromtheendofeachwiretoaminimumof3inchesfromtheend-Thatthecleanedareaisdry.3Assembleasealedsplice.Forthespliceof:-AnAWG8orlar