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470110807042100150100100201352001251501/0001502201502/00001702401753/000002002702001084/0AWG 導(dǎo)線負(fù)載能力圖表:如圖所示,該圖表的橫坐標(biāo)是飛機(jī)標(biāo)準(zhǔn)導(dǎo)線規(guī)格(線號),縱坐標(biāo)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,對于不同導(dǎo)線所允許的電壓損耗值,位于主圖表左側(cè)的單獨(dú)表格內(nèi),斜穿表格的一系列平行線代表導(dǎo)線的負(fù)載電流,用這個(gè)圖表我們根據(jù)負(fù)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)。 導(dǎo)線的壓降在負(fù)載電路中允許的最大電壓降正常系統(tǒng)工作電壓(V)允許的電壓降(V)連續(xù)工作間斷工作14 1281211548200714二、 導(dǎo)線的選擇說明:導(dǎo)線的尺寸必須滿足,當(dāng)有電流流過時(shí)不會產(chǎn)生過大的電壓降。l 等級2(C2):兩股擰在一起的線。這些標(biāo)記是用特殊的打印機(jī)打在導(dǎo)線和電纜上面的。若無R WTC,才查備份件號。專用耗材:根據(jù)手冊查閱結(jié)果,再準(zhǔn)備相關(guān)耗材。 refer to Paragraph 。 在203012 7(SEALED SPLICE CONFIGURATIONS FOR UNSHIELDED WIRES AND UNSHIELDED CABLES)中,(Splice Assembly Configurations)中,在Table 61(SEALED SPLICE ASSEMBLY CONFIGURATIONS)中,根據(jù)導(dǎo)線CAU值等因數(shù)確定用封嚴(yán)拼接套件(Splice Kit)對導(dǎo)線(單根或兩根)進(jìn)行修理的程序203012 (One or Two Wires to One or Two Wires Splice Kit)。203012,Table 67;剝線程序,200015,根據(jù)203012 (6)程序,在203012 Table 67(INSULATION REMOVAL LENGTH)中,根據(jù)拼接管件號確定絕緣去除長度=177。P466P467,完成給定受損導(dǎo)線的修理。203012 :P2589P2590P25915)根據(jù)203012 (1)程序,在203012 (Conductor CAU)的Table 4(AWG TO CAU CONVERSION)中,根據(jù)導(dǎo)線的AWG規(guī)格,確定導(dǎo)線的CAU值:AWG 16=CAU 24;AWG 20=CAU 12。67 / 67。(如:對于AWG 16/20=CAU 24/12,選擇封嚴(yán)拼接套件P/N= D43637/D43636)7)根據(jù)203012 (2)/(3)程序,在203012 Table 20(COMPONENT PART NUMBERS OF SEALED SPLICE KITS)中,根據(jù)封嚴(yán)拼接套件的件號,確定拼接管件號(Butt Splice P/N=D60907/ D60906)、Sleeve件號(P/N=D4360097/D4360096)和夾接尺寸(Crimp Barrel Size=2016/2620)。2) 清理工作現(xiàn)場。P2590P2590根據(jù)203012 (6)程序,在200015中找到絕緣去除程序。201012,根據(jù)203012 (1)程序,在203012 (Conductor CAU)的Table 4(AWG TO CAU CONVERSION)中,根據(jù)導(dǎo)線的AWG規(guī)格,確定導(dǎo)線的CAU值:AWG 16=CAU 24;AWG 20=CAU 12。●Damage that goes into or through the insulation of a splice assembly when the conductor splice does not have damage;refer to Figure 7 and Paragraph 。201013查詢SWPM手冊“Front Matter”中的“Content目錄”,確定“導(dǎo)線/電纜修理”所在章節(jié):201013(REPAIR OF ELECTRICAL WIRE AND CABLE)P82(REPAIR OF ELECTRICAL WIRE AND CABLE);201013,1(GENERAL DATA);201013, (Applicable Repair Conditions for Wire and Cable)For the general conditions that are applicable for:●The repair of wire and cable, refer to Paragraph .●The repair of Airworthiness Limitation wiring, refer to Paragraph .●The repair of Fuel System wiring that has Airworthiness Limitations, refer to Paragraph .●The repair of wiring that is adjacent to a fuel tank, refer to Paragraph .●The selection of parts and materials for a repair, refer to Paragraph .●The repair of wire and cable with a splice, refer to Paragraph .For the applicable damage and repair conditions of:●Wire and cable in special systems, refer to Table 1●Special wire and cable, refer to Table 2●Other types of wire and cable, refer to Table 3P910201013,P910P911203012,P912201013,2 (WIRE AND CABLE DAMAGE AND REPAIR CONDITIONS), (Unshielded Wire)For the conditions that are applicable to the data in this paragraph, refer to Paragraph 。 有規(guī)定的導(dǎo)線件號和備份導(dǎo)線件號按字母數(shù)字排列的數(shù)據(jù)表。 導(dǎo)線和導(dǎo)線束的標(biāo)記 標(biāo)記形式:導(dǎo)線識別在導(dǎo)線束中識別導(dǎo)線,識別碼能夠在目錄中查到,還有其他形式的標(biāo)記,但不常用。l 一直到等級8。導(dǎo)線選擇時(shí),要知道的數(shù)據(jù):線長(英尺)、流過的安培數(shù)、允許的壓降,還要考慮電流流過是間斷的,還是連續(xù)的。如果負(fù)載電流和電壓的交點(diǎn)在曲線1 的上部,則表明導(dǎo)線束或電纜通過這個(gè)連續(xù)電流時(shí)不會超載。 材料絕緣等級絕緣等級描 述1具有BMS 311材料的絕緣等級2不具有BMS 311材料的絕緣等級l 如果程序里指定出某種名稱或PN的材料,必須選擇同等級的材料。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)動機(jī)、氣源管道附近的高溫區(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))都采用耐高溫和耐磨的導(dǎo)線/電纜。C。C~250176。C。(2) 導(dǎo)線芯材料:銅芯線:鍍鋅、銀、鎳或高密度銅合金絲材料。CMILW7139銅線耐高溫205176。電纜是在一個(gè)絕緣層里有一根或多根導(dǎo)線外部有特殊的防護(hù)層組合而成,絕緣層是由聚氯乙烯(PVC)、玻璃絲加強(qiáng)的聚脂樹脂(GUP)、聚銑銨(PA)、聚四氯乙烯(PTFE)或其他絕緣材料組成,有良好的絕緣性能、防水、防油、抗腐蝕和抗熱張力特性;在使用的導(dǎo)線或電纜時(shí),要考慮符合環(huán)境溫度的要求(低于105176。 refer to Paragraph ._ Damage to the shield is less than 1 inch in length and less than 25 percent of the circumference of the shield。 refer to Paragraph ._ Damage to the shield is more than 1 inch in length or more than 25 percent of the circumference of the shield。 inch farther than the rear end of the ferrule at the other end of the splice_ Makes a 50 percent overlap.(28) Tightly wind a second layer of the tape on the splice assembly.Make sure that the layer of tape:_ Starts where the first layer of tape stops_ Stops where the first layer of tape starts_ Makes a 50 percent overlap.(29) Put the sleeve on the shield splice assembly.Make sure that each end of the sleeve is a minimum of inch farther than the tape on each end of the splice assembly.(30) Shrink the sleeve into its position. Refer to Subject 201014.導(dǎo)線與電纜 一、 概述導(dǎo)線是指在一個(gè)絕緣層里,有多股鍍錫(鍍銀或鍍鎳)的銅絲(高密度銅合金絲)組合在一起,其柔軟性較好;在電路中起到連接的作用。C9253MILW16878銅線只用于開關(guān)部位耐高溫105176。C以上):PTFE材料特性:一般具有防水、防油。C~250176。鋁線結(jié)構(gòu)(以MILW7072 為例):工作電壓600V;環(huán)境溫度范圍55176。C~84176。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(shí),要考慮溫度適用等級和絕緣等級。l 當(dāng)某等級材料的溫度沒有給定,可以選用比它較低級別的材料。在圖表中有三條從左下角斜向上方的粗曲線,曲線表示是在不同安裝條件下導(dǎo)線負(fù)載能力。導(dǎo)線的尺寸必須滿足,當(dāng)需要的電流流過時(shí)不會產(chǎn)生過熱現(xiàn)象。l 等級3(C3):三股擰在一起的線。每捆導(dǎo)線束都有標(biāo)記,標(biāo)記間距為6~12英尺;導(dǎo)線束末端標(biāo)記一般不超過3英寸;3英寸以下的導(dǎo)線不用作標(biāo)記;兩芯和多芯屏蔽電纜只在兩端加套管作標(biāo)記;這些標(biāo)記是由廠家印在電纜上;飛機(jī)上新裝的成捆電纜都沒有標(biāo)記;但是,需要每隔6英尺做一個(gè)標(biāo)記;標(biāo)記可以并排或上下排列。 。2. 普通區(qū)域的導(dǎo)線修理:導(dǎo)線絕緣層破損修理:一根導(dǎo)線拼接修理:多根導(dǎo)線拼接修理:(AWG:16/20)的受損情況,確定導(dǎo)線修理的程序?!馮he bond between the overlaps of the tape of the insulation is broken for a length more than 50 percent of the diameter of the wire;refer to Figure 6 and Paragraph 。P2514P2515P2575P2576203012 :P2589P2590P2591,確定導(dǎo)線的CAU值。 inch。3. 結(jié)束工作:1) 歸還工具。6)根據(jù)203012 (1)程序,在203012 Table 19(PART NUMBERS OF SEALED SPLICE KITS FOR UNSHIELDED WIRE AND UNSHIELDED CABLE)中,根據(jù)封嚴(yán)拼接套件Sleeve的容納導(dǎo)線數(shù)量和孔數(shù),以及CAU范圍,確定適用的封嚴(yán)拼接套件