線路標準施工Ⅱ屏蔽電纜修理0

線路標準施工Ⅱ屏蔽電纜修理0屏蔽電纜的修繕〔屏蔽網(wǎng)〕20-10-13導(dǎo)線與電纜的修繕Repairofelectricalwireandcable目錄Contents章節(jié)Paragraph頁碼Page1.通用數(shù)據(jù)GeneralData1A.導(dǎo)線與電纜所適用的修繕情形1ApplicableRepairConditionsforWireandCableB.導(dǎo)線與電纜修繕的普通情形2GeneralConditionsfortheRepairofWireandCableC.適航限制要求3AirworthinessLimitationsD.修繕所需部件與資料選擇的普通情形4GeneralConditionsfortheSelectionofPartsandMaterialsforaRepairE.有拼接收導(dǎo)線與電纜修繕時的普通情形4GeneralConditionsfortheRepairofWireandCablewithaSpliceF.拼接組件修繕的適用情形y6ApplicableConditionsfortheRepairofaSpliceAssemblG.所需資料6NecessaryMaterials2.導(dǎo)線與電纜的損傷及其修繕情形9WireandcabledamageandrepairconditionsA.非屏蔽導(dǎo)線9UnshieldedWireB.非屏蔽電纜10UnshieldedcableC.屏蔽導(dǎo)線12ShieldedwireD.屏蔽導(dǎo)線—兩層屏蔽網(wǎng)相鄰14ShieldedWire-TwoAdjacentShieldsE.屏蔽導(dǎo)線—兩層屏蔽網(wǎng)不相鄰16ShieldedWire-TwoShieldsThatAreNotAdjacentF.屏蔽電纜19ShieldedcableG.屏蔽電纜—兩層屏蔽網(wǎng)相鄰21ShieldedCable-TwoAdjacentShieldsH.屏蔽電纜—兩層屏蔽網(wǎng)不相鄰23ShieldedCable-TwoShieldsThatAreNotAdjacentI.帶有非金屬編織網(wǎng)的導(dǎo)線或電纜25WireorCableWithaNon-MetallicBraidJ.鋁質(zhì)導(dǎo)線25AluminumWireK.銅質(zhì)電源饋線27CopperPowerFeederWireL.跳線組件的跨接與接地28BondandGroundJumperAssemblyM.同軸電纜29CoaxcableN.阻燃導(dǎo)線30FireResistantWireO.扁平線芯電纜組件32P.ARINC629S280W502-()銜接電纜33Q.ARINC629S280W651-()數(shù)據(jù)總線電纜組件33R.從屏蔽底線中抽出屏蔽網(wǎng)35S.熱電偶導(dǎo)線36T.發(fā)起機導(dǎo)線束中的導(dǎo)線與電纜37U.燃油系統(tǒng)導(dǎo)線37V.裝置于油箱中的燃油指示系統(tǒng)導(dǎo)線與電纜37W.裝置于油箱外的燃油指示系統(tǒng)導(dǎo)線與電纜39X.過熱或電弧損傷的導(dǎo)線423.導(dǎo)線與電纜絕緣層的修繕42A.導(dǎo)線主絕緣層的修繕42B.電纜外防護層的修繕45C.主絕緣層與外防護層上的堆疊纏繞膠帶破損處的修繕46D.電纜中導(dǎo)線主絕緣層的修繕47E.非金屬編織網(wǎng)的修繕49F.拼接組件絕緣層的修繕504.非屏蔽導(dǎo)線與非屏蔽電纜的拼接修繕51A.導(dǎo)線的修繕51B.電纜的修繕515.屏蔽導(dǎo)線與屏蔽電纜的拼接修繕52A.屏蔽導(dǎo)線的拼接修繕52B.屏蔽導(dǎo)線的拼接修繕——兩層屏蔽網(wǎng)相鄰52C.燃油蒸汽區(qū)域屏蔽導(dǎo)線的拼接修繕——兩層圓芯屏蔽網(wǎng)不相鄰53D.屏蔽導(dǎo)線的拼接修繕——兩層圓芯屏蔽網(wǎng)不相鄰57E.屏蔽電纜的拼接修繕61F.屏蔽電纜的拼接修繕——兩層屏蔽網(wǎng)相鄰62G.燃油蒸汽區(qū)域屏蔽電纜的拼接修繕——兩層圓芯屏蔽網(wǎng)不相鄰62H.屏蔽電纜的拼接修繕——兩層圓芯屏蔽網(wǎng)不相鄰676.屏蔽導(dǎo)線與屏蔽電纜的屏蔽網(wǎng)修繕72A.封嚴的屏蔽網(wǎng)拼接構(gòu)型選擇72B.高溫焊錫管的選擇74C.屏蔽網(wǎng)修繕——膠帶與扎線74D.屏蔽網(wǎng)修繕——焊接屏蔽網(wǎng)拼接收76E.屏蔽網(wǎng)修繕——焊錫管、屏蔽資料、膠帶與熱縮管〔屏蔽網(wǎng)不后翻〕78F.屏蔽網(wǎng)修繕——焊錫管、屏蔽資料、膠帶與扎線〔屏蔽網(wǎng)不后翻〕82G.屏蔽網(wǎng)修繕——焊錫管、屏蔽資料、膠帶與熱縮管〔屏蔽網(wǎng)后翻〕85H.屏蔽網(wǎng)修繕——焊錫管、屏蔽資料、膠帶與扎線〔屏蔽網(wǎng)后翻〕88I.屏蔽網(wǎng)修繕——金屬環(huán)、屏蔽資料、膠帶與熱縮管92J.屏蔽網(wǎng)修繕——金屬環(huán)、屏蔽資料、膠帶與扎線95K.屏蔽網(wǎng)修繕——屏蔽線夾、屏蔽資料、膠帶與熱縮管98I.屏蔽網(wǎng)修繕——屏蔽線夾、屏蔽資料、膠帶與扎線1027.同軸電纜的修繕106A.同軸電纜的屏蔽網(wǎng)修繕106B.同軸電纜的拼接修繕107C.添加一段新同軸電纜的拼接修繕1088.防波地線的修繕109A.抽線法防波地線的修繕1099.阻燃導(dǎo)線的修繕111A.阻燃導(dǎo)線的絕緣層修繕111B.非屏蔽阻燃導(dǎo)線的拼接修繕11310.熱電偶導(dǎo)線的拼接修繕116A.鎳鉻熱電偶導(dǎo)線的拼接修繕11611.燃油油量指示系統(tǒng)電纜的修繕118A.延伸至油箱外的高阻抗電纜的防護層修繕118B.延伸至油箱外的高阻抗電纜的拼接修繕11812.熱風(fēng)槍121A.件號與描畫121B.熱風(fēng)槍的操作12220-10-13/2.FShieldedCable屏蔽電纜的修繕Fortheconditionsthatareapplicabletothedatainthisparagraph,refertoParagraph1.A.Repairisnecessarywhenthesetypesofdamageoccur:_Damagetotheconductor;refertoParagraph5.E._Damagetotheprimaryinsulation;refertoParagraph5.E._Damagetotheshieldismorethan1inchinlengthormorethan25percentofthecircumferenceoftheshield,andneartheendofthecable;refertoParagraph6.A._Damagetotheshieldismorethan1inchinlengthormorethan25percentofthecircumferenceoftheshield;refertoParagraph5.E._Damagetotheshieldislessthan1inchinlengthandlessthan25percentofthecircumferenceoftheshield;refertoParagraph6.C._Damagethatgoesthroughthejacket,buttheshieldhasnodamage;refertoParagraph3.B._Damagethatgoesintothejacket;refertoParagraph3.B._Thebondbetweentheoverlapsofthetapeofajacketisbrokenforalengthmorethan50percentofthediameterofthewire;refertoFigure30andParagraph3.C._Damagethatgoesintotheinsulationoftheshieldspliceassembly,buttheshieldhasnodamage;refertoFigure31andParagraph3.F.RefertoFigure29.Figure29UNSERVICEABLEJACKETANDSHIELDDAMAGEFigure30UNSERVICEABLEBROKENBONDSFigure31UNSERVICEABLEDAMAGEOFTHEINSULATIONOFASHIELDSPLICEASSEMBLYRepairisnotnecessarywhenthesetypesofdamageoccur:_Afoldinthejacketortheprimaryinsulationatabend_Asmallscratchonthesurfaceofthejacketortheprimaryinsulation_Abrasionthatmakesthesurfaceofthejacketortheprimaryinsulationrough_Thebondbetweentheoverlapsofthetapeofthejacketisbrokenforalengththatislessthan50percentofthediameterofthewire.RefertoFigure32andFigure33.Figure32SERVICEABLESCRATCHES,FOLDS,ANDABRASIONFigure33SERVICEABLEBROKENBONDS20-10-13/6.REPAIROFTHESHIELDOFASHIELDEDWIREANDASHIELDEDCABLE20-10-13/6.A.SelectionofaSealedShieldSpliceConfigurationReferto:_Paragraph2.forthedamageandrepairconditionsoftheapplicableshieldedwireorshieldedcable_Paragraph1.E.fortheapplicableconditionsfortherepairofwireandcablewithasplice.Table13SEALEDSHIELDSPLICECONFIGURATIONS20-10-13/6.B.SelectionofaSolderSleeve20-10-13/6.I.ShieldRepair-MechanicalFerrules,ShieldMaterial,Tape,andaSleeveReferto:_Paragraph1.E.fortheapplicableconditionsfortherepairofwireandcablewithasplice_Figure116fortheconfigurationofthespliceassembly.Figure116CONFIGURATIONOFTHESPLICEASSEMBLY(1)Removethenecessarylengthoftheouterjacket.RefertoFigure117.Figure117JACKETREMOVAL(a)Ononesideofthedamagedarea,carefullycutthejacketaroundthecircumferenceofthewireorthecableaminimumof0.4inchfromtheendofthedamage,awayfromthedamagedarea.CAUTION：DONOTCUTALLTHEWAYTHROUGHTHEJACKET.DAMAGECANOCCURTOTHESHIELDORWIRE.(b)Ontheothersideofthedamagedarea,carefullycutthejacketaroundthecircumferenceofthewireorthecableaminimumof0.4inchfromtheendofthedamage,awayfromthedamagedarea.CAUTION：DONOTCUTALLTHEWAYTHROUGHTHEJACKET.DAMAGECANOCCURTOTHESHIELDORWIRE.(c)Cutthejacketlightlyalongthelengthofthejackettoberemoved.CAUTION：DONOTCUTALLTHEWAYTHROUGHTHEJACKET.DAMAGECANOCCURTOTHESHIELDORWIRE.(d)Pullthejacketapartatthelineswhereitiscut.NOTE:Ifitisnecessary,thewireorthecablecanbebentatthelineswherethejacketwascut.CAUTION：DONOTBENDTHEWIREORTHECABLEMORETHAN3TIMESTHEDIAMETER.DAMAGETOTHEWIREORTHECABLECANOCCUR.(2)Preparetheshield.RefertoFigure118.Figure118SHIELDPREPARATION(a)Carefullycutaroundthecircumferenceoftheshieldoneachsideofthedamagedarea.Makesurethatthedistancefromtheendofthejackettotheendoftheshieldisaminimumof0.31inch.(b)Removetheunwantedshieldwiththedamage.(3)Makeaselectionoftwosetsofinnerandoutermechanicalferrules.RefertoSubject20-30-12.Makesurethat：_TheferrulesarethecorrectTemperatureGrade_Theinnerferrulehasthesmallestdiameterthatcanmovefreelyonthejacket_Theouterferrulehasthesmallestdiameterthatcanbeputontheinnerferruleandshield.20-30-12〔目錄〕20-30-12/3.H.MechanicalFerrulesNOTE:AsatisfactoryalternativefortheBACS13S()BferruleistheMS21981-()ferrulethathastheequivalentsize.NOTE:Thenickelplatedferrulesarenotcolorcoded.Figure6BOEINGFERRULEPARTNUMBERSTRUCTURE(4)Makeaselectionofaferrulecrimptool.RefertoSubject20-30-12.20-30-12〔目錄〕20-30-12/4.B.MechanicalFerruleCrimpTools(5)Putoneinnerferruleonthejacketofthewireorcable,totherearoftheareatorepair.(6)Movethestrandsoftherearshieldapartandmakethemstraight.(7)Aligntheforwardendoftheinnerferrulewiththeendofthejacket.(8)Foldthestrandsoftherearshieldbackontheinnerferrule.Makesurethatthestrandsoftheshieldaresymmetricalaroundthecircumferenceoftheferrule.(9)MakeaselectionofashieldmaterialfromTable9.Makesurethattheshieldmaterialhas:_ThecorrectTemperatureGrade_Thesmallestdiameterthatcanbeputonthefoldedbackshield.NOTE:Foralternativeshieldmaterials,refertoSubject20-00-11.20-10-13/1.GNecessaryMaterials：Table920-00-11/2.MShieldMaterials(10)Cutthenecessarylengthoftheshieldmaterial.Makesurethatthelengthoftheshieldmaterialisaminimumof0.62inchmorethanthelengthofthejacketthatisremovedfromthewireorthecable.(11)Puttheshieldmaterialonthewireorcable.(12)Putthetwoouterferrulesontheshieldmaterial.(13)Aligntheendoftheshieldmaterialwiththeendoftheshieldthatisfoldedback.(14)Aligntherearendofoneoftheouterferruleswiththerearendoftheinnerferrule.Makesurethat:_Theouterferrulegoesaroundtheshieldmaterial_Therearendoftheouterferruledoesnotextendfartherthantherearendoftheinnerferrule_Therearendoftheouterferruleisamaximumof0.06inchfromtherearendoftheinnerferrule.(15)Crimptheferrules.夾接工具引見參考20-00-1220-00-12目錄：(16)Puttheotherinnerferruleonthejacketofthewireorcableforwardoftheareatorepair.(17)Movethestrandsoftheforwardshieldapartandmakethemstraight.(18)Aligntheforwardendoftheinnerferrulewiththeendofthejacket.(19)Foldthestrandsoftheforwardshieldbackovertheinnerferrule.Makesurethatthestrandsoftheshieldaresymmetricalaroundthecircumferenceoftheferrule.(20)Puttheendoftheshieldmaterialonthefoldedbackshield.(21)Aligntherearendoftheotherouterferrulewiththerearendoftheinnerferrule.Makesurethat:_Theouterferrulegoesaroundtheshieldmaterial_Theshieldmaterialispulledtight_Therearendoftheouterferruledoesnotextendfartherthantherearendoftheinnerferrule_Therearendoftheouterferruleisamaximumof0.06inchfromtherearendoftheinnerferrule.(22)Crimptheferrules.(23)Removetheshieldandtheshieldmaterialthatextendfartherthantherearendoftheinnerferruleoneachendoftheshieldsplice.(24)MakeaselectionofaheatshrinkablesleevefromTable5.Makesurethatthesleevehas:_ThecorrectTemperatureGrade_Thesmallestdiameterthatcanbeputonthespliceassembly.NOTE:Foralternativeheatshrinkablesleeves,refertoSubject20-00-11.20-10-13/1.GNecessaryMaterials：Table520-00-11/2〔Materials〕/2.N〔Sleeves〕/Table27〔HEATSHRINKABLESLEEVES〕：(25)Cutthenecessarylengthofthesleeve.Makesurethatthelengthisaminimumof1inchfartherthantherearendoftheferrulesoneachendofthespliceassembly.(26)MakeaselectionofaTFEinsulationtapefromTable6.MakesurethattheinsulationtapeisthecorrectTemperatureGrade.20-10-13/1.GNecessaryMaterials：Table6(27)Tightlywindalayerofthetapeonthespliceassembly.Makesurethatthelayeroftape:_Starts0.50inch±0.25inchfartherthantherearendoftheferruleatoneendofthesplice_Stops0.50inch±0.25inchfartherthantherearendoftheferruleattheotherendofthesplice_Makesa50percentoverlap.(28)Tightlywindasecondlayerofthetapeonthespliceassembly.Makesurethatthelayeroftape:_Startswherethefirstlayeroftapestops_Stopswherethefirstlayeroftapestarts_Makesa50percentoverlap.(29)Putthesleeveontheshieldspliceassembly.Makesurethateachendofthesleeveisaminimumof0.25inchfartherthanthetapeoneachendofthespliceassembly.(30)Shrinkthesleeveintoitsposition.RefertoSubject20-10-14.導(dǎo)線與電纜 概述導(dǎo)線是指在一個絕緣層里，有多股鍍錫〔鍍銀或鍍鎳〕的銅絲〔高密度銅合金絲〕組合在一同，其柔軟性較好；在電路中起到銜接的作用。電纜是在一個絕緣層里有一根或多根導(dǎo)線外部有特殊的防護層組合而成，絕緣層是由聚氯乙烯〔PVC〕、玻璃絲增強的聚脂樹脂〔GUP〕、聚銑銨〔PA〕、聚四氯乙烯〔PTFE〕或其他絕緣資料組成，有良好的絕緣功用、防水、防油、抗腐蝕和抗熱張力特性；在運用的導(dǎo)線或電纜時，要思索契合環(huán)境溫度的要求〔低于105°C〕。用于高溫區(qū)域250°C以上〔如：發(fā)起機〕的導(dǎo)線或電纜，絕緣層運用PTEE資料。鋁線用于電源系統(tǒng)只是為了減輕飛機重量。如表6.2.1。表6.2.1線的種類德國規(guī)范美國規(guī)范線的種類9251MIL-W5086銅線耐高溫105°CMIL-C7078銅線耐高溫205°C9253MIL-W16878銅線只用于開關(guān)部位耐高溫105°CMIL-W7139銅線耐高溫205°C29900MIL-W7072銅線耐高溫105°CMIL-W25038銅線耐高平和400°C防火耐高溫5分鐘為1093°C導(dǎo)線引見導(dǎo)線的種類：單芯絕緣導(dǎo)線、特殊用途的公用導(dǎo)線、耐高溫絕緣導(dǎo)線等。導(dǎo)線的主要組成資料：絕緣層資料：普通區(qū)域：PVC、尼龍或其它絕緣資料組成。高溫區(qū)域〔250°C以上〕：PTFE資料特性：普通具有防水、防油。導(dǎo)線芯資料：銅芯線：鍍鋅、銀、鎳或高密度銅合金絲資料。鋁芯線：用于電源系統(tǒng)，只是為了減輕飛機的重量。電纜的種類：多線電纜：兩根或多根絕緣導(dǎo)線裝于一根導(dǎo)管內(nèi)。扭絞電纜：兩根或多根絕緣導(dǎo)線擰在一同。屏蔽電纜：一根或多根絕緣導(dǎo)線掩蓋有金屬編織的屏蔽網(wǎng)。同軸電纜：有一根絕緣的中央導(dǎo)線同一金屬編織的外導(dǎo)線體構(gòu)成。導(dǎo)線與電纜的種類：帶屏蔽或不帶屏蔽的單芯Class導(dǎo)線/電纜001-199帶屏蔽或不帶屏蔽的雙芯絞合Class導(dǎo)線/電纜201-299帶屏蔽或不帶屏蔽的三芯絞合Class導(dǎo)線/電纜301-399帶屏蔽或不帶屏蔽的四芯及以上的絞合導(dǎo)線/電纜401-499公用種類導(dǎo)線高溫導(dǎo)線同軸電纜熱電偶銜接導(dǎo)線其它類型導(dǎo)線超越下面的一切的導(dǎo)線/電纜501-8991A-99Z航空公司預(yù)留的導(dǎo)線901-999C9001-C9999廠家預(yù)留的客戶化的導(dǎo)線束編碼A-A到Y(jié)-YZ-A到Z-Z帶極性的預(yù)留的客戶化導(dǎo)線PA1-PY9PZ1-PZ9導(dǎo)線、電纜的結(jié)構(gòu)引見：以MIL-W-7139導(dǎo)線結(jié)構(gòu)：任務(wù)電壓600V；環(huán)境溫度范圍-60°C~250°C屏蔽數(shù)據(jù)防波電纜結(jié)構(gòu)〔以BMS13-48Type12Class1為例〕：任務(wù)電壓600V；環(huán)境溫度范圍-65°C~多芯電纜結(jié)構(gòu)〔以MIL-W-7078為例〕：任務(wù)電壓600V；環(huán)境溫度范圍-65°C~250°C。鋁線結(jié)構(gòu)〔以MIL-W-7072為例〕：任務(wù)電壓600V；環(huán)境溫度范圍-55°C~250°C。音頻屏蔽防波電纜：此種類型電纜用于音頻信號的傳輸。屏蔽的作用是掃除對線路的攪擾〔如點火裝置〕或許是外界對線路形成的攪擾〔如通訊系統(tǒng)的設(shè)備〕；為了使屏蔽防波層完全發(fā)揚作用，要求屏蔽防波層接在＜50Hz公共端〔DC接地〕。玻璃纖維絕緣資料主要作用在于增強導(dǎo)線的抗拉性、隔熱性和耐火性。高頻同軸電纜：用于高頻信號傳輸電纜，這種高頻同軸電纜的婚配阻抗是50Ω，高頻同軸電纜的屏蔽防波層作為回線運用，另外還起到屏蔽作用，高頻同軸電纜的芯線是鍍銀獨芯銅線。任務(wù)溫度范圍-40°C~84°C公用導(dǎo)線和電纜：熱電偶銜接導(dǎo)線：在發(fā)起機排氣溫度(EGT)、發(fā)起機滑油溫度和發(fā)起機燃油溫度的指示系統(tǒng)中，運用的溫度傳感器是熱電耦。熱電偶是由兩種不同金屬資料焊接而成：一種是鎳鉻合金，另一種是鎳基鋁錳合金。在發(fā)起機局部銜接熱電耦傳感器的導(dǎo)線也是一根是耐高溫的鎳鉻合金導(dǎo)線，另一根導(dǎo)線是鎳基鋁錳合金導(dǎo)線，這樣可以減小熱電耦傳感器的熱電勢損耗。在維護任務(wù)中必需牢記，在接線時切記不能將兩根不同資料的導(dǎo)線不能接反，否那么造溫度指示系統(tǒng)缺點，接線端必需運用磅表來磅螺母的扭力距，力矩值請見相關(guān)機型的飛機維護手冊〔AMM〕或相關(guān)發(fā)起機的維護手冊。防火系統(tǒng)線路：防火系統(tǒng)線路運用的導(dǎo)線原那么上要同時滿足下面條件：白色、白色或紅白相間的絕緣外套導(dǎo)線特別耐高溫導(dǎo)線要契合MIL-W-25038要求，任務(wù)環(huán)境溫度是400℃，要求在導(dǎo)線絕緣和導(dǎo)線自身燒毀之前，在五分鐘之內(nèi)必需接受1093℃高溫。導(dǎo)線結(jié)構(gòu)〔見以下圖所示〕硅樹脂絕緣資料〔SI〕主要作用是增強導(dǎo)線的耐磨性和阻燃性的特點，帶玻璃纖維的聚氟乙烯資料〔GPTFE〕的主要作用是防火系統(tǒng)線路的導(dǎo)線結(jié)構(gòu)導(dǎo)線/電纜的選用：在導(dǎo)線/電纜的選用時，要思索溫度適用等級和絕緣等級。如表6.2.2和6.2.3。導(dǎo)線環(huán)境溫度是105℃指的是航空器的常溫區(qū)域，環(huán)境溫度是250℃指的是發(fā)起機、氣源管道左近的高溫區(qū)域，在民用航空器的某些重要飛行系統(tǒng)〔如導(dǎo)航系統(tǒng)〕都采用耐高平和耐磨的導(dǎo)線/電纜。鋁線主要用于民用航空器的電源系統(tǒng)的局部線路〔發(fā)起機、吊架不允許運用〕。運用鋁線的目的的為了減輕飛機重量，增加發(fā)起機的耗油量，從而提高飛機經(jīng)濟效益。在民用航空器上運用的導(dǎo)線/電纜絕大少數(shù)是依照波音資料規(guī)范規(guī)范〔BMS〕，在一些重要系統(tǒng)也采用高于波音資料規(guī)范規(guī)范的美國軍用飛機規(guī)格〔MIL表6.2.2資料溫度等級溫度等級最高溫度等級替代等級°C°FA100212TypeIB135275TypeIIC180356TypeIIID260500TypeIV關(guān)于給定溫度等級的資料，只能運用此等級的資料或更初級別的資料。當某等級資料的溫度沒有給定，可以選用比它較低級別的資料。表6.2.3資料絕緣等級絕緣等級描述1具有BMS3-11資料的絕緣等級2不具有BMS3-11資料的絕緣等級假設(shè)順序里指定出某種稱號或PN的資料，必需選擇同等級的資料。假設(shè)資料的絕緣等級沒有給定，兩種皆可。導(dǎo)線的尺寸及負載才干AWG－美國導(dǎo)線規(guī)格與英制線纜尺寸代碼，如表6.2.4。表6.2.4線纜尺寸代碼ＡＷＧ規(guī)格英制線纜尺寸代碼Ω/1000英尺真實截面25°Cmm2in22600141.60.150.2*10-32400226.20.240.3*10-32200416.50.380.5*10-32000610.40.600.9*10-3180106.510.961.5*10-3160124.091.232*10-3140202.581.943*10-3120301.622.964*10-3100501.025.157*10-380900.6418.9810*10-361400.40313.420*10-342200.25321.830*10-323400.15934.550*10-314200.10041.860*10-305300.12652.780*10-3006800.079567.20.10008500.063084.80.1300001070.0500107.80.167導(dǎo)線和電纜的負載才干，如表6.2.5和6.2.6。表6.2.520°C最大電纜直徑最大導(dǎo)線直徑線截積CUmin導(dǎo)線號AWG電流維護電流接線片正常最大自動熔化面積螺栓mmmmmm2-AAAAmm2mm1.650.60.242446440.3522.280.380.382258550.522.541.040.61207.5127.550.752.62.921.320.971810161010133.301.541.2216131815101.543.811.931.9414172420152.554.312.433.081223323020455.083.095.291033424030656.474.248.558465850501067.375.3313.66607880701669.396.9021.64801011007025811.38.7633.9210014512510035812.69.7541.51125170-15050813.810.852.81/0150195-150701015.512.467.72/0175230-200701017.314.877.73/0200270-200901219.015.690.84/0225320-2009012表6.2.6200C鋁導(dǎo)線負載最大電纜直徑最大導(dǎo)線直徑線截面積CＵmin導(dǎo)線號AWG電流維護電流接線片正常最大自動熔化面積螺栓mmmmmm2-AAAAmm2mm6.354.068.558355035308.3187.755.3613.665075505014.269.146.6521.6470110807021.3410.98.3833.9210015010010034.1213.710.652.8013520012515053.91/015.212.167.700150220-15069.32/017.013.677.7000170240-17584.73/018.414.990.80000200270-2001084/0AWG導(dǎo)線負載才干圖表：如下圖，該圖表的橫坐標是飛機規(guī)范導(dǎo)線規(guī)格〔線號〕，縱坐標是導(dǎo)線在不同電壓下允許的導(dǎo)線長度，水平線代表在允許的導(dǎo)線長度條件下可允許的導(dǎo)線電壓損耗，關(guān)于不同導(dǎo)線所允許的電壓損耗值，位于主圖表左側(cè)的獨自表格內(nèi)，斜穿表格的一系列平行線代表導(dǎo)線的負載電流，用這個圖表我們依據(jù)負載電流和允許的電壓損耗值找到所需的導(dǎo)線規(guī)格〔線號〕。在圖表中有三條從左下角斜向上方的粗曲線，曲線表示是在不同裝置條件下導(dǎo)線負載才干。假設(shè)負載電流和電壓的交點在曲線1的上部，那么說明導(dǎo)線束或電纜經(jīng)過這個延續(xù)電流時不會超載。假設(shè)負載電流和電壓的交點在曲線1和曲線2之間，那么說明導(dǎo)線是在自在空氣中能延續(xù)承載電流，但假設(shè)是在導(dǎo)線管里的導(dǎo)線束或電纜那么會發(fā)生過熱超載而使導(dǎo)線或電纜損壞。假設(shè)負載電流和電壓的交點在曲線2和曲線3之間，那么說明導(dǎo)線承載的電流必需限制在2分鐘之內(nèi)。導(dǎo)線的運用與選擇導(dǎo)線的降壓：〔如表6.2.7〕從飛機發(fā)電機或電瓶連到匯流條的主電源線，運用時其降壓不超越2%。從飛機發(fā)電機或電瓶的接地端到設(shè)備的接地端的導(dǎo)線電阻為0.005歐姆即契合要求。假設(shè)導(dǎo)線的壓降不超越規(guī)則值，即導(dǎo)線也契合要求。表6.2.7導(dǎo)線的壓降在負載電路中允許的最大電壓降正常系統(tǒng)任務(wù)電壓〔V〕允許的電壓降〔V〕延續(xù)任務(wù)連續(xù)任務(wù)140.51281211548200714導(dǎo)線的選擇說明：導(dǎo)線的尺寸必需滿足，當有電流流過時不會發(fā)生過大的電壓降。導(dǎo)線的尺寸必需滿足，當需求的電流流過時不會發(fā)生過熱現(xiàn)象。導(dǎo)線選擇時，要知道的數(shù)據(jù)：線長〔英尺〕、流過的安培數(shù)、允許的壓降，還要思索電流流過是連續(xù)的，還是延續(xù)的。導(dǎo)線與導(dǎo)線束的識別導(dǎo)線的分類：美國規(guī)范的導(dǎo)線分類：美國軍用規(guī)范：MIL－W5086、7072、7139、16878、25038；MIL－C7078波音資料規(guī)范：BMS13－XX型號〔TYPE〕：如：BMS13-28T3C資料型號等級線的尺寸資料：相當于MIL-W-7139，說明觸及哪種絕緣資料。型號：〔導(dǎo)線的絕緣和屏蔽狀況〕TYPE(T1)：絕緣的導(dǎo)線或電纜TYPE(T2)：由TYPE1導(dǎo)線帶鍍鎳的銅網(wǎng)屏蔽層組成。TYPE(T3)：屏蔽電纜由TYPE2加一層維護套。TYPE(T4)：絕緣的多芯電纜由幾股TYPE1導(dǎo)線擰在一同，添加維護絕緣層。等級：〔芯線股數(shù)〕等級1〔C1〕：單股線。等級2〔C2〕：兩股擰在一同的線。等級3〔C3〕：三股擰在一同的線。不時到等級8。線的尺寸：線的橫截面積〔線號AWG〕或DIN規(guī)范。公用導(dǎo)線：熱電偶銜接導(dǎo)線：在發(fā)起機排氣溫度〔EGT〕指示系統(tǒng)中，發(fā)起機局部與熱電偶銜接導(dǎo)線，一根是耐高溫的鎳鉻合金導(dǎo)線，另一根導(dǎo)線是鎳基鋁錳合金；這兩種資料在制造熱電偶探頭時都運用；兩根導(dǎo)線不能接反。火警系統(tǒng)線路，原那么上要滿足下面條件之一：白色或白色絕緣外套導(dǎo)線特別耐高溫電纜要契合MIL-W-25038要求，在導(dǎo)線絕緣和自身燒毀之前，在五分鐘之內(nèi)接受1093oC高溫。導(dǎo)線束的識別：導(dǎo)線和電纜的標志〔如圖6.2.1〕在飛機一切系統(tǒng)中每根導(dǎo)線和單芯電纜都有標志。這些標志是用特殊的打印機打在導(dǎo)線和電纜下面的。每捆導(dǎo)線束都有標志，標志間距為6～12英尺；導(dǎo)線束末端標志普通不超越3英寸；3英寸以下的導(dǎo)線不用作標志；兩芯和多芯屏蔽電纜只在兩端加套管作標志；這些標志是由廠家印在電纜上；飛機上新裝的成捆電纜都沒有標志；但是，需求每隔6英尺做一個標志；標志可以并排或上下陳列。圖6.2.1標志方式：導(dǎo)線識別在導(dǎo)線束中識別導(dǎo)線，識別碼可以在目錄中查到，還有其他方式的標志，但不常用。如圖6.2.2。圖圖6.2.2導(dǎo)線導(dǎo)線及導(dǎo)線束的查找：如圖6.2.3和表6.2.7。線號查找線號查找時，可直接查找WDM-WIRE-LIST，再經(jīng)過相關(guān)圖號查找線路圖。系統(tǒng)章節(jié)部件查找時，先查找WDM相關(guān)章節(jié)線路圖，再查找WIRE-LIST。圖圖6.2.表6.2.7導(dǎo)線清單導(dǎo)線代碼〔WireTypeCode〕如表6.2.8。由導(dǎo)線型號和飛機型號按數(shù)字字母陳列的數(shù)據(jù)表，#為線芯數(shù)，RWTC為可交流前型號的交流件。假定無RWTC，才查備份件號。表6.2.8線型代碼由導(dǎo)線的件號或說明和飛機型號按字母數(shù)字陳列的數(shù)據(jù)表.如表6.2.9。表6.2.9導(dǎo)線數(shù)據(jù)碼有規(guī)則的導(dǎo)線件號和備份導(dǎo)線件號按字母數(shù)字陳列的數(shù)據(jù)表，如表6.2.10。表6.2.10導(dǎo)線數(shù)據(jù)碼普通區(qū)域的導(dǎo)線修繕主要的工具設(shè)備：螺刀、斜口鉗、夾接工具、直尺、毛刷、工具盤、帶手冊的電腦、剝線鉗、游標卡尺等。資料：金屬內(nèi)環(huán)、金屬外環(huán)、屏蔽資料、對接收、扎線、高頻頭、熱縮管、絕緣膠帶等。預(yù)備任務(wù)：1.1工具：〔借用注銷〕基本工具：依據(jù)操作內(nèi)容預(yù)備基本工具設(shè)備。公用工具：依據(jù)手冊查閱結(jié)果，再預(yù)備公用工具。1.2耗材：基本耗材：依據(jù)操作內(nèi)容預(yù)備基本耗材。公用耗材：依據(jù)手冊查閱結(jié)果，再預(yù)備相關(guān)耗材。普通區(qū)域的導(dǎo)線修繕：導(dǎo)線絕緣層破損修繕：一根導(dǎo)線拼接修繕：多根導(dǎo)線拼接修繕：2.1依據(jù)給定的導(dǎo)線〔AWG：16/20〕的受損狀況，確定導(dǎo)線修繕的順序。20-10-13查詢SWPM手冊〝FrontMatter〞中的〝Content目錄〞，確定〝導(dǎo)線/電纜修繕〞所在章節(jié)：20-10-13〔REPAIROFELECTRICALWIREANDCABLE〕P8220-10.13〔REPAIROFELECTRICALWIREANDCABLE〕；20-10-13，1〔GENERALDATA〕；20-10-13，1.A〔ApplicableRepairConditionsforWireandCable〕Forthegeneralconditionsthatareapplicablefor：●Therepairofwireandcable,refertoParagraph1.B.●TherepairofAirworthinessLimitationwiring,refertoParagraph1.C.●TherepairofFuelSystemwiringthathasAirworthinessLimitations,refertoParagraph1.C.●Therepairofwiringthatisadjacenttoafueltank,refertoParagraph1.C.●Theselectionofpartsandmaterialsforarepair,refertoParagraph1.D.●Therepairofwireandcablewithasplice,refertoParagraph1.E.Fortheapplicabledamageandrepairconditionsof：●Wireandcableinspecialsystems,refertoTable1●Specialwireandcable,refertoTable2●Othertypesofwireandcable,refertoTable3P91020-10-13，1.BP910P91120-30-12，1.DP91220-10-13，2〔WIREANDCABLEDAMAGEANDREPAIRCONDITIONS〕20-10.13，2.A〔UnshieldedWire〕Fortheconditionsthatareapplicabletothedatainthisparagraph,refertoParagraph1.A。Repairisnecessarywhenthesetypesofdamageoccur：●Damagetotheconductor;refertoParagraph4.A?！馜amagethatgoesthroughtheprimaryinsulation;refertoParagraph3.A?！馜amagethatgoesintotheprimaryinsulation;refertoParagraph3.A?！馮hebondbetweentheoverlapsofthetapeoftheinsulationisbrokenforalengthmorethan50percentofthediameterofthewire；refertoFigure6andParagraph3.C?！馜amagethatgoesintoorthroughtheinsulationofaspliceassemblywhentheconductorsplicedoesnothavedamage；refertoFigure7andParagraph3.F。20-10-13，4〔REPAIROFUNSHIELDEDWIREANDUNSHIELDEDCABLEWITHASPLICEASSEMBLY〕20-10-13，4.A〔RepairofaWire〕〔4.BRepairofaCable〕20-10-13，1.E〔GeneralConditionsfortheRepairofWireandCablewithaSplice〕2.2找到導(dǎo)線修繕順序，按順序?qū)?dǎo)線停止修繕前的預(yù)備〔剪去導(dǎo)線的損傷長度段、清潔〕。依照順序20-10-13，4.A〔1〕，剪去導(dǎo)線受損段。依照順序20-10-13，4.A〔2〕，用酒精清潔導(dǎo)線〔＞3inch〕并晾干。2.3依據(jù)導(dǎo)線的CAU值，確定用封嚴的拼接套件對單根導(dǎo)線或兩根導(dǎo)線停止修繕的順序。20-30-12，7.F〔非高溫導(dǎo)線〕20-30-121.A，依據(jù)密封拼接收確定——20-30-121.C，Table2，依據(jù)溫度等級和導(dǎo)線AWG規(guī)格確定——20-30-127.A。在20-30-127〔SEALEDSPLICECONFIGURATIONSFORUNSHIELDEDWIRESANDUNSHIELDEDCABLES〕中，在7.A〔SpliceAssemblyConfigurations〕中，在Table61〔SEALEDSPLICEASSEMBLYCONFIGURATIONS〕中，依據(jù)導(dǎo)線CAU值等因數(shù)確定用封嚴拼接套件〔SpliceKit〕對導(dǎo)線〔單根或兩根〕停止修繕的順序20-30-127.F〔OneorTwoWirestoOneorTwoWires-SpliceKit〕。P2514P2515P2575P257620-30-127.F拼接收修繕順序：P2589P2590P25912.4查閱手冊，確定導(dǎo)線的CAU值。20-10-12，7.F，1.D依據(jù)20-30-127.F(1)順序，在20-30-121.D〔ConductorCAU〕的Table4〔AWGTOCAUCONVERSION〕中，依據(jù)導(dǎo)線的AWG規(guī)格，確定導(dǎo)線的CAU值：AWG16=CAU24；AWG20=CAU12。P25172.5查閱手冊，確定適用的拼接套件。20-30-12，7.F，Table19依據(jù)20-30-127.F(1)順序，在20-30-12Table19〔PARTNUMBERSOFSE