【正文】 400℃， 要求在導線絕緣和導線本身燒毀之前，在五分鐘之內(nèi)必須承受1093℃ 高溫。C~250176。 導線的主要組成材料：(1) 絕緣層材料：普通區(qū)域： PVC、尼龍或其它絕緣材料組成。 refer to Figure 31 and Paragraph .Refer to Figure 29.Figure 29 UNSERVICEABLE JACKET AND SHIELD DAMAGEFigure 30 UNSERVICEABLE BROKEN BONDSFigure 31 UNSERVICEABLE DAMAGE OF THE INSULATION OF A SHIELD SPLICE ASSEMBLYRepair is not necessary when these types of damage occur:_ A fold in the jacket or the primary insulation at a bend_ A small scratch on the surface of the jacket or the primary insulation_ Abrasion that makes the surface of the jacket or the primary insulation rough_ The bond between the overlaps of the tape of the jacket is broken for a length that is less than 50 percent of the diameter of the wire.Refer to Figure 32 and Figure 33.Figure 32 SERVICEABLE SCRATCHES, FOLDS, AND ABRASIONFigure 33 SERVICEABLE BROKEN BONDS201013/6. REPAIR OF THE SHIELD OF A SHIELDED WIRE AND A SHIELDED CABLE201013/. Selection of a Sealed Shield Splice ConfigurationRefer to:_ Paragraph 2. for the damage and repair conditions of the applicable shielded wire or shielded cable_ Paragraph . for the applicable conditions for the repair of wire and cable with a splice.Table 13 SEALED SHIELD SPLICE CONFIGURATIONS201013/. Selection of a Solder Sleeve201013/. Shield Repair Mechanical Ferrules, Shield Material, Tape, and a SleeveRefer to:_ Paragraph . for the applicable conditions for the repair of wire and cable with a splice_ Figure 116 for the configuration of the splice assembly.Figure 116 CONFIGURATION OF THE SPLICE ASSEMBLY(1) Remove the necessary length of the outer jacket. Refer to Figure 117.Figure 117 JACKET REMOVAL(a) On one side of the damaged area, carefully cut the jacket around the circumference of the wire or the cable a minimum of inch from the end of the damage, away from the damaged area.CAUTION：DO NOT CUT ALL THE WAY THROUGH THE JACKET. DAMAGE CAN OCCUR TO THE SHIELD OR WIRE.(b) On the other side of the damaged area, carefully cut the jacket around the circumference of the wire or the cable a minimum of inch from the end of the damage, away from the damaged area.CAUTION：DO NOT CUT ALL THE WAY THROUGH THE JACKET. DAMAGE CAN OCCUR TO THE SHIELD OR WIRE.(c) Cut the jacket lightly along the length of the jacket to be removed.CAUTION：DO NOT CUT ALL THE WAY THROUGH THE JACKET. DAMAGE CAN OCCUR TO THE SHIELD OR WIRE.(d) Pull the jacket apart at the lines where it is cut.NOTE: If it is necessary, the wire or the cable can be bent at the lines where the jacket was cut.CAUTION：DO NOT BEND THE WIRE OR THE CABLE MORE THAN 3 TIMES THE TO THE WIRE OR THE CABLE CAN OCCUR.(2) Prepare the shield. Refer to Figure 118.Figure 118 SHIELD PREPARATION(a) Carefully cut around the circumference of the shield on each side of the damaged area.Make sure that the distance from the end of the jacket to the end of the shield is a minimum of inch.(b) Remove the unwanted shield with the damage.(3) Make a selection of two sets of inner and outer mechanical ferrules. Refer to Subject 203012.Make sure that：_ The ferrules are the correct Temperature Grade_ The inner ferrule has the smallest diameter that can move freely on the jacket_ The outer ferrule has the smallest diameter that can be put on the inner ferrule and shield.203012（目錄）203012/. Mechanical FerrulesNOTE: A satisfactory alternative for the BACS13S()B ferrule is the MS21981() ferrule that has the equivalent size.NOTE: The nickel plated ferrules are not color coded.Figure 6 BOEING FERRULE PART NUMBER STRUCTURE(4) Make a selection of a ferrule crimp tool. Refer to Subject 203012.203012（目錄）203012/. Mechanical Ferrule Crimp Tools(5) Put one inner ferrule on the jacket of the wire or cable, to the rear of the area to repair.(6) Move the strands of the rear shield apart and make them straight.(7) Align the forward end of the inner ferrule with the end of the jacket.(8) Fold the strands of the rear shield back on the inner ferrule.Make sure that the strands of the shield are symmetrical around the circumference of the ferrule.(9) Make a selection of a shield material from Table 9.Make sure that the shield material has:_ The correct Temperature Grade_ The smallest diameter that can be put on the folded back shield.NOTE: For alternative shield materials, refer to Subject 200011.201013/ Necessary Materials：Table 9200011/ Shield Materials(10) Cut the necessary length of the shield material.Make sure that the length of the shield material is a minimum of inch more than the length of the jacket that is removed from the wire or the cable.(11) Put the shield material on the wire or cable.(12) Put the two outer ferrules on the shield material.(13) Align the end of the shield material with the end of the shield that is folded back.(14) Align the rear end of one of the outer ferrules with the rear end of the inner ferrule.Make sure that:_ The outer ferrule goes around the shield material_ The rear end of the outer ferrule does not extend farther than the rear end of the inner ferrule_ The rear end of the outer ferrule is a maximum of inch from the rear end of the inner ferrule.(15) Crimp the ferrules.夾接工具介紹參考200012200012目錄：(16) Put the other inner ferrule on the jacket of the wire or cable forward of the area to repair.(17) Move the strands of the forward shield apart and make them straight.(18) Align the forward end of the inner ferrule with the end of the jacket.(19) Fold the strands of the forward shield back over the inner ferrul