1、AMSC N/A FSC 6145 INCH-POUND MIL-DTL-24640/23E 8 November 2011 SUPERSEDING MIL-DTL-24640/23D 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRIC, -20 TO +105 C, 600 VOLTS, LIGHTWEIGHT, MULTI-CONDUCTOR, 18 AWG, TYPE MXCW (INCLUDING VARIATION TYPE MXCOW) This specification is approved for use by
2、 all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-24640. Construction (Watertight) First - Copper conductor, coated or uncoated 18 AWG, 7 strands, in accordance with ASTM B8. S
3、econd - Mica glass tape insulation 0.00290.0002 inch (50 percent overlap maximum and minimum overlap of 45 percent). Conformance testing shall be in accordance with MIL-DTL-81381 prior to cabling. Third - Opaque-pigmented polyimide tape 0.001 inch (50 percent overlap minimum). Fourth - Opaque-pigmen
4、ted polyimide tape 0.001 inch with 0.0001 inch Fluorinated Ethylene Propylene (FEP) (50 percent overlap minimum). Fifth - Modified aromatic polyimide resin coating 0.0005 inch minimum (0.001 inch nominal). Identification codes applied using Method 1 or 3. Sixth - The required number of component wir
5、es shall be cabled together. Cabling sequence shall be consecutive, starting with number 1 from center outward. Fillers may be used, as necessary, to form a round cable. Seventh - Optional binder tape. Construction Variant for Type MXCW Eighth - Cross-linked polyolefin jacket (see table I for thickn
6、ess). NOTE: Manufacturers identification tape or thread is required (see 3.7.3). Construction Variant for Type MXCOW Eighth - Braided shield, tin-coated copper strands. Braid must be constructed to meet surface transfer impedance requirements as listed herein. Ninth - Optional binder tape. Tenth - C
7、ross-linked polyolefin jacket (see table II for thickness). NOTE: Manufacturers identification tape or thread is required (see 3.7.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/23E 2 TABLE I. Construction details. PIN M24640/23 Ty
8、pe number Number of conductors Jacket thickness (inch) (min.) Cable diameter (inch) Cable weight (pounds per 1000 feet) (max.) (min.) (max.) -01UN -02UN -03UN -04UN -05UN -06UN -07UN -08UN -09UN MXCW-7 MXCW-10 MXCW-14 MXCW-19 MXCW-24 MXCW-30 MXCW-37 MXCW-44 MXCW-61 7 10 14 19 24 30 37 44 61 0.038 0.
9、041 0.041 0.041 0.044 0.044 0.044 0.044 0.047 0.295 0.375 0.402 0.440 0.520 0.547 0.584 0.656 0.729 0.319 0.405 0.434 0.474 0.560 0.589 0.630 0.708 0.785 90.0 139.0 173.0 215.0 295.0 340.0 398.0 492.0 640.0 TABLE II. Construction details - overall shield. PIN M24640/23 Type number Number of conducto
10、rs Jacket thickness (inch) (min.) Cable diameter (inch) Cable weight (pounds per 1000 feet) (max.) (min.) (max.) -01UO -02UO -03UO -04UO -05UO -06UO -07UO -08UO -09UO MXCOW-7 MXCOW-10 MXCOW-14 MXCOW-19 MXCOW-24 MXCOW-30 MXCOW-37 MXCOW-44 MXCOW-61 7 10 14 19 24 30 37 44 61 0.038 0.041 0.041 0.041 0.0
11、44 0.044 0.044 0.047 0.047 0.340 0.415 0.440 0.477 0.557 0.584 0.622 0.697 0.757 0.366 0.447 0.474 0.515 0.601 0.630 0.670 0.751 0.817 140.0 185.0 225.0 280.0 362.0 399.0 466.0 574.0 715.0 REQUIREMENTS: Qualification required. Construction details: See tables I and II. Finished wire: For polyimide t
12、ape constructions, the following additional tests shall be applicable in accordance with MIL-DTL-81381. Temperature rating 150 C (302 F) (max.) conductor temperature Voltage rating 600 volts (root mean square) at sea level Blocking Oven temperature, 1502 C (3023.6 F) no sticking of conductors Flamma
13、bility 3 seconds (max.) after flame 3.0 inches (max.) flame travel No flaming of tissue paper Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/23E 3 Humidity resistance 5 megohms for 1000 feet (min.) insulation resistance after humidity
14、exposure Impulse dielectric test 8.0 kV, 100 percent impulse test Insulation resistance 2500 megohms for 1000 feet (min.) Polyimide cure test No cracking Shrinkage 0.062 inch (max.) at 180 C Surface resistance 5 megohms inches (min.), initial and final readings Thermal shock Oven temperature, 1502 C
15、 (3023.6 F) Maximum change in measurement 0.031 inch Wet dielectric test 2500 volts (root mean square) INSPECTION: Basic electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) 7.07 Voltage withstand (volts, root mean square, min.) Conductor to conductor 2000 Conductor to shield (MXCOW only
16、) 1000 Shield to shield Not applicable Insulation resistance (megohms/1000 feet, min.) Conductor to conductor 2500 Conductor to overall shield (MXCOW only) 2500 Shield to shield (component shield only) Not applicable Shield to shield (component shield to overall shield) Not applicable Conductor and
17、shield continuity (Type MXCOW only) No failure Jacket flaws (Type MXCOW only) No failure Group A: Visual and dimensional No failure Capacitance: Mutual capacitance (at 1 MHz, picofarads/foot (pF/ft), max.) Not applicable Capacitance unbalance (percent, max.) Not applicable Characteristic impedance (
18、at 1 MHz, ohms) Not applicable Watertightness No failure (see table IX of MIL-DTL-24640 for limits of water leakage) Weight No failureProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/23E 4 Group B Cold bending No failure Drip No failure
19、Cross-link proof test (percent, max.) Jacket 50 Tear (pounds per inch thickness, min.) 35 Physicals (unaged) Jacket Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 160 Attenuation (at 3 MHz, dB/100 feet, max.) Not applicable Gas flame (1 hour) No failure Group C: Physicals (aged), ai
20、r oven Jacket Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Permanence of printing 25 (conductor insulation, cycles, Method 1 only, min.) Permanence of printing (jacket, cycles, min.) 125 Heat distortion (percent of unaged, max.) 30 Cable sealant removability
21、No failure Shrinkage No failureSurface transfer impedance (Type MXCOW only) Milliohms per meter (max.) 700 EMP response (dB, min.) 60 Group D: Flame propagation No failure Qualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: A
22、ging and compatibility (cable) No failure Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/23E 5 Acid gas equivalent (percent, max.) Jacket 2 Fillers 2 Insulation 18 Halogen content (percent, max.) Jacket 0.2 Fillers 0.2 Immersion (jacke
23、t) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index (max.) Jacket 25 Fillers 45Insulation 10Toxicity index (max.) Jacket 5 Fillers 5 Insulation 1.5 Durometer (jacket) - Type A (hardness, min.) 80 Weathering (jacket) No failure Fungus resistance No fai
24、lure Abrasion resistance No failure Gas flame (3 hour) No failure Component wire No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) MXCW-7, MXCW-10, MXCW-14, MXCW-19, MXCW-24, MXCW-30, MXCW-37, MXCW-44, MXCW-61, MXCOW-7, MXCOW-10, MXCOW-14, MXCOW-19, MXCOW-24, MXCOW-30, MXCOW-37, MXCOW-4
25、4, MXCOW-61 7 - 19 500 24 - 61 250 CHANGES FROM PREVIOUS ISSUE: Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
26、MIL-DTL-24640/23E 6 Custodians: Preparing Activity:Army MI Navy SH Navy SH (Project 6145-2009-098) Review Activities: Army AR, AV, CR, CR4 Navy CG, EC DLA CC NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
