1、AMSC N/A FSC 6145 INCH-POUND MIL-DTL-24640/24E 8 November 2011 SUPERSEDING MIL-DTL-24640/24D 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRIC, -20 TO +105 C, 600 VOLTS, LIGHTWEIGHT, MULTI-PAIR, 22 AWG, TYPE TTXW (INCLUDING VARIATION TYPE TTXOW) This specification is approved for use by all
2、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 with Circuit Integrity) First - Copper conductor, coated or uncoated, 22 AWG, 7 strands, in accorda
3、nce with ASTM B8. Second - 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). Fou
4、rth - Opaque-pigmented 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 3 (telephone color code) or 6. (N
5、ote for Method 6, twisted pair identification code colors shall be one black and one white conductor). For Type TTXW (OW) 1, colors shall be one white, one black, and one red conductor. Sixth - Two conductors twisted together. (Except for Type TTXW (OW) 1, shall be 3 conductors twisted together to f
6、orm a triad.) The pitch shall be 1 inch. Seventh - The required number of component wires shall be cabled together. Fillers may be used, as necessary, to form a round cable. Eighth - Optional binder tape. Construction Variant for Type TTXW Ninth - Cross-linked polyolefin jacket (see table I for thic
7、kness). 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-24640/24E 2 Construction Variant for Type TTXOW Ninth - Braided shield, tin-coated copper strands. Braid must b
8、e constructed to meet surface transfer impedance requirements as listed herein. Tenth - Optional binder tape. Eleventh - Cross-linked polyolefin jacket (see table II for thickness). NOTE: Manufacturers identification tape or thread is required (see 3.7.3). TABLE I. Construction details. PIN M24640/2
9、4 Type number Number of pairs Jacket thickness (inch) (min.) Cable diameter (inch) Cable weight (pounds per 1000 feet) (max.) (min.) (max.) -01UN -02UN -03UN -04UN -05UN -06UN -07UN -08UN TTXW-1 TTXW-3 TTXW-5 TTXW-10 TTXW-15 TTXW-20 TTXW-30 TTXW-40 1 3 5 10 15 20 30 40 0.028 0.038 0.037 0.041 0.044
10、0.044 0.044 0.047 0.181 0.285 0.331 0.456 0.527 0.577 0.684 0.790 0.195 0.307 0.357 0.492 0.569 0.621 0.738 0.852 26.0 62.3 91.0 172.0 235.0 285.0 417.0 544.0 TABLE II. Construction details - overall shield. PIN M24640/24 Type number Number of pairs Jacket thickness (inch) (min.) Cable diameter (inc
11、h) Cable weight (pounds per 1000 feet) (max.) (min.) (max.) -01UO -02UO -03UO -04UO -05UO -06UO -07UO TTXOW-1 TTXOW-3 TTXOW-5 TTXOW-15 TTXOW-20 TTXOW-30 TTXOW-40 1 3 5 15 20 30 40 0.031 0.038 0.038 0.044 0.044 0.047 0.047 0.253 0.333 0.376 0.556 0.614 0.717 0.823 0.273 0.359 0.406 0.600 0.662 0.772
12、0.887 67.9 108.0 134.0 299.0 371.0 497.0 631.0 REQUIREMENTS: Qualification required. Construction details: See tables I and II. Finished wire: For polyimide tape constructions, the following additional tests shall be applicable in accordance with MIL-DTL-81381. Temperature rating 150 C (302 F) (max.
13、) conductor temperature Voltage rating 600 volts (root mean square) at sea level Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/24E 3 Blocking Oven temperature, 1502 C (3023.6 F) no sticking of conductors Flammability 3 seconds (max.)
14、after flame 3.0 inches (max.) flame travel No flaming of tissue paper Humidity resistance 5 megohms for 1000 feet (min.) insulation resistance after humidity exposure Impulse dielectric test 100 percent test, impulse voltage at 8.0 kV Insulation resistance 2500 megohms for 1000 feet (min.) Polyimide
15、 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 (3023.6 F) Maximum change in measurement 0.031 inch Wet dielectric test 2500 volts (root mean square) INSPECTION: Basic Electrical
16、s: Conductor resistance (ohms/1000 feet at 25 C, max.) 17.54 Voltage withstand (volts, root mean square, min.) Conductor to conductor 2000 Conductor to shield (TTXOW only) 1000 Shield to shield Not applicable Insulation resistance (megohms/1000 feet, min.) Conductor to conductor 2500 Conductor to sh
17、ield (TTXOW only) 2500 Shield to shield (component shield only) Not applicable Shield to shield (component shield to overall shield) Not applicable Conductor and shield continuity (Type TTXOW only) No failure Jacket flaws (Type TTXOW only) No failure Group A: Visual and dimensional No failure Capaci
18、tance Mutual capacitance (at 1 MHz, picofarads/foot (pF/ft), max.) Not applicable Capacitance unbalance (percent, max.) Not applicable Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/24E 4 Characteristic impedance (at 1 MHz, ohms) Not a
19、pplicable Watertightness No failure (see table IX of MIL-DTL-24640 for limits of water leakage) Weight No failureGroup B: Cold bending No failure Drip No failure Cross-link proof test (percent, max.) Jacket 50 Tear (lb/in thickness, min.) 35 Physicals (unaged) Jacket Tensile strength (lb/in2, min.)
20、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), air oven Jacket Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Permanence of printing 25 (conductor insulation,
21、cycles, Method 1 only, min.) Permanence of printing (jacket, cycles, min.) 125 Heat distortion (percent of unaged, max.) 30 Cable sealant removability No failure Shrinkage No failureSurface transfer impedance (Type TTXOW only) Milliohms per meter (max.) 700 EMP response (dB, min.) 60 Group D: Flame
22、propagation No failure Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/24E 5 Qualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Aging and compatibility (cable)
23、No failure Acid gas equivalent (percent, max.) Jacket 2 Fillers 2 Insulation 18 Halogen content (percent, max.) Jacket 0.2 Fillers 0.2 Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index (max.) Jacket 25 Fillers 45Insulation 10Toxicity
24、 index (max.) Jacket 5 Fillers 5 Insulation 1.5 Durometer (jacket) - Type A (hardness, min.) 80 Weathering (jacket) No failure Fungus resistance No failure Abrasion resistance No failure Gas flame (3 hour) No failure Component wire No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) TTXW-
25、1-1/2, TTXW-3, TTXW-5, TTXW-10, TTXW-15, TTXW-20, TTXW-30, TTXW-40, TTXOW-1-1/2, TTXOW-3, TTXOW-5, TTXOW-10, TTXOW-15, TTXOW-20, TTXOW-30, TTXOW-40 1 - 15 500 20 - 40 250 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/24E 6 CHANGES FRO
26、M 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. Custodians: Preparing Activity:Army MI Navy SH Navy SH (Project 6145-2009-099) Review Activities: Army AR, AV, CR, CR4 Navy CG, EC DLA CC NOTE:
27、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-,-,-
