1、AMSC N/A FSC 6145 INCH-POUND MIL-DTL-24640/5E 8 November 2011 SUPERSEDING MIL-DTL-24640/5D 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRIC, -20 TO +105 C, 600 VOLTS, LIGHTWEIGHT, MULTI-PAIR, 20 AWG, TYPES TTXS OR TTXSW (INCLUDING VARIATION TYPE TTXSO OR TTXSOW) This specification is approv
2、ed for use by 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, Non-Watertight (TTXS or TTXSO) and Watertight (TTXSW or TXSOW) First - 19-strand, tin-coated
3、 copper conductor, 20 AWG. Watertight constructions shall be constructed with 7 strands. Second - Component wires shall be SAE-AS81044/12, except identification shall be in accordance with the codes and methods of MIL-DTL-24640. Testing shall be done in accordance with the component wire ratings and
4、 requirements listed on this specification sheet. Conformance testing shall be in accordance with SAE-AS81044 prior to cabling. Third - Two component wires, one black and one white, shall be twisted together to form the required number of pairs. The pitch shall be 1 inch. Fourth - Optional binder ta
5、pe. Fifth - Braided shield of 38 AWG tin-coated copper strands. Braid coverage shall be no less than 90 percent determined in accordance with WC-27500. Sixth - Shield insulation of two polyester tapes or polyester tape and extruded jacket. Identification codes applied using Method 2. Seventh - The r
6、equired number of shielded, twisted pairs shall be cabled together. Cabling sequence shall be consecutive, starting with shielded pair number 1 from center outward. Fillers may be used, as necessary, to form a round cable. Eighth - Optional binder tape. Construction Variant for Type TTXS or TTXSW Ni
7、nth - Cross-linked polyolefin jacket (see table I for thickness). NOTE: Manufacturers identification tape or thread is required (see 3.7.3). Construction Variant for Type TTXSO or TTXSOW Ninth - Braided shield, tin-coated copper strands. Braid must be constructed to meet surface transfer impedance r
8、equirements as listed herein. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/5E 2 Tenth - Optional binder tape. Eleventh - Cross-linked polyolefin jacket (see table II for thickness). NOTE: Manufacturers identification tape or thread i
9、s required (see 3.7.3). TABLE I. Construction details. PIN M24640/5 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 TTXS-2 TTXS-4 TTXSW-2 TTXSW-4 2 4 2 4 0.038 0.041 0.038 0.041 0.335 0.
10、393 0.380 0.430 0.361 0.424 0.400 0.455 74.3 115.0 94.8 135.3 TABLE II. Construction details - overall shield. PIN M24640/5 Type number Number of pairs Jacket thickness (inch) (min.) Cable diameter (inch) Cable weight (pounds per 1000 feet) (max.) (min.) (max.) -01UO -02UO -03UO -04UO -05UO -06UO -0
11、7UO -08UO TTXSO-2 TTXSO-6 TTXSO-8 TTXSO-10 TTXSOW-2 TTXSOW-6 TTXSOW-8 TTXSOW-10 2 6 8 10 2 6 8 10 0.041 0.044 0.044 0.044 0.041 0.044 0.044 0.044 0.386 0.506 0.587 0.627 0.405 0.555 0.600 0.685 0.416 0.546 0.633 0.675 0.430 0.585 0.635 0.725 126.0 219.0 284.0 322.0 137.7 250.1 302.0 385.1 REQUIREMEN
12、TS: Qualification required. Construction details: See tables I and II. Component wire: The component wire shall be in accordance with SAE-AS81044 and shall be tested in accordance with the following wire ratings and additional requirements. Temperature rating 150 C (302 F) (max.) conductor temperatu
13、re Voltage rating 600 volts (root mean square) at sea level Accelerated aging Non-blocked Oven temperature, 3002 C (5723.6 F) for 6 hours Water-blocked Oven temperature, 2502 C (4823.6 F) for 6 hours Blocking 1502 C (3023.6 F) Flammability 30 seconds (max.) Provided by IHSNot for ResaleNo reproducti
14、on or networking permitted without license from IHS-,-,-MIL-DTL-24640/5E 3 3.0 inches (max.) No flaming of tissue paper Humidity resistance 5000 megohms for 1000 feet (min.) insulation resistance after humidity exposure Dielectric test (100% test) Primary insulation Impulse test - 6.0 kV (peak) or 3
15、 kHz spark test - 1.5kV root mean square Component wire Impulse test - 8.0 kV (peak) or 3 kHz spark test - 5.5kV root mean square Insulation resistance 5000 megohms for 1000 feet (min.) Life cycle Non-blocked Oven temperature, 2002 C (3923.6 F) for 168 hours Water-blocked Oven temperature, 2002 C (3
16、923.6 F) for 120 hours Physical properties of primary insulation Tensile strength 2500 lb/in2(min.) Elongation 150 percent (min.) Shrinkage Non-blocked 0.125 inch (max.) at 3002 C (5723.6 F) Water-blocked 0.125 inch (max.) at 2502 C (4823.6 F) Surface resistance 500 megohms inches (min.), initial an
17、d final readings Thermal shock Oven temperature, 1502 C (3023.6 F) Maximum change in measurement 0.060 inch Wet dielectric test 2500 volts (root mean square) Wrap test Mandrel wrap test required INSPECTION: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) 10.95 Voltage withstan
18、d (volts, root mean square, min.) Conductor to conductor and shield 1000 Conductor to shield Not applicable Shield to shield (component shield only) 200 Shield to shield (component shield to overall shield, TTXSO/W only) 500 Insulation resistance (megohms/1000 feet, min.) Conductor to conductor and
19、shield 2500 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/5E 4 Shield to shield (component shield only) 100 Shield to shield (component shield to overall shield, TTXSO/W only) 100 Conductor and shield continuity No failure Jacket flaw
20、s No failure Group A: Visual and dimensional No failure Capacitance Mutual capacitance (at 1 MHz, picofarads/foot (pF/ft), max.) 50 Capacitance unbalance (percent, max.) 15 Characteristic impedance (at 1 MHz, ohms) 30 (min.), 63 (max.) Watertightness (Type TTXSW or TTXSOW only) No failure (see table
21、 IX of MIL-DTL-24640 for limits of water leakage) Weight No failureGroup B: Cold bending No failure Cross-link proof test (percent, max.) Jacket 50 Drip (Type TTXSW or TTXSOW only) No failure Tear (lb/in thickness, min.) 35 Physicals (unaged) Jacket Tensile strength (lb/in2, min.) 1300 Elongation (p
22、ercent, min.) 160 Attenuation (at 3 MHz, dB/100 feet, max.) 3 Gas flame (1 hour) Not applicable Group C: Physicals (aged), air oven Jacket Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Permanence of printing (conductor insulation, cycles, min.) Not applicable
23、Permanence of printing (jacket, cycles, min.) 125 Heat distortion (percent of unaged, max.) 30 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/5E 5 Cable sealant removability (Type TTXSW or TTXSOW only) No failure Shrinkage No failure S
24、urface transfer impedance (Types TTXSO or TTXSOW 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: Aging and compatibilit
25、y cable No failure Acid gas equivalent (percent, max. failure) 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 45Insul
26、ation 10Toxicity 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 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
27、-MIL-DTL-24640/5E 6 Gas flame (3 hour) Not applicable Component wire No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) All types and sizes 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
28、extent of the changes. Custodians: Preparing Activity:Army MI Navy SH Navy SH (Project 6145-2009-073) 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-,-,-
