1、AMSC N/A FSC 6145 INCH-POUND MIL-DTL-24640/6E 8 November 2011 SUPERSEDING MIL-DTL-24640/6D 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRIC, -20 TO +105 C, 600 VOLTS, LIGHTWEIGHT, MULTI-PAIR, 22 AWG, TYPES 2XAO AND 2XAOW This specification is approved for use by all Departments and Agencies
2、 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 (2XAO) or Watertight (2XAOW) First - 19-strand, tin-coated copper conductor, 22 AWG. Watertight constructions shall be
3、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 in accordance with the component wire ratings and requirements listed on this specification sheet. Conformance test
4、ing shall be in accordance with SAE-AS81044 prior to cabling. Third - The insulated component wires, one black and one white, shall be twisted together to form the required number of pairs. The pitch shall be 1 inch. Twisted pair identification codes applied using Method 6. Fourth - The required num
5、ber of pairs shall be cabled together. Fifth - Optional binder tape. Sixth - Braided shield, tin-coated copper strands. Braid must be constructed to meet surface transfer impedance requirements as listed herein. Seventh - Optional binder tape. Eighth - Cross-linked polyolefin jacket (see table I for
6、 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-24640/6E 2 TABLE I. Construction details. PIN M24640/6 Type number Number of pairs Jacket thickness (inch)
7、 (min.) Cable diameter (inch) Cable weight (pounds per 1000 feet) (max.) (min.) (max.) -01UO -02UO -03UO -04UO -05UO -06UO -07UO -08UO -09UO -10UO 2XAO-2 2XAO-7 2XAO-10 2XAO-18 2XAO-40 2XAOW-2 2XAOW-7 2XAOW-10 2XAOW-18 2XAOW-40 2 7 10 18 40 2 7 10 18 40 0.038 0.041 0.041 0.044 0.047 0.038 0.041 0.04
8、1 0.044 0.047 0.307 0.392 0.475 0.567 0.796 0.310 0.395 0.475 0.570 0.800 0.331 0.422 0.511 0.611 0.858 0.335 0.425 0.515 0.615 0.860 79.4 131.0 175.0 263.0 513.0 115.1 134.6 184.2 263.0 494.6 REQUIREMENTS: Qualification required. Construction details: See table I. Component wire: The component wire
9、 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 temperature Voltage rating 600 volts (root mean square) at sea level Accelerated aging Non-blocked Oven temperatur
10、e, 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.) 3.0 inches (max.) No flaming of tissue paper Humidity resistance 5000 megohms for 1000 feet (min.) insulation resistance after humidity exposure Di
11、electric test Primary insulation 6.0 kilovolts (peak), 100 percent impulse test (when tested in lieu of spark test) Finished wire 8.0 kilovolts (peak), or 3 kHz spark test, 5.5 kV, 100 percent test Insulation resistance 5000 megohms for 1000 feet (min.) Provided by IHSNot for ResaleNo reproduction o
12、r networking permitted without license from IHS-,-,-MIL-DTL-24640/6E 3 Life cycle Non-blocked Oven temperature, 2002 C (3923.6 F) for 168 hours Water-blocked Oven temperature, 2002 C (3923.6 F) for 120 hours Physical properties of primary insulation Tensile strength 2500 lb/in2(min.) Elongation 150
13、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) Spark test primary insulation 1500 volts (root mean square), 3 kHz, 100 percent test Surface resistance 500 megohms inches (min.), initial and final readings Thermal shock
14、 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.) 17.39 Voltage withstand (volts, root mean square, mi
15、n.) Conductor to conductor 2000 Conductor to shield 1000 Shield to shield Not applicable Insulation resistance (megohms/1000 feet, min.) 2500 Conductor and shield continuity No failure Jacket flaws No failure Group A: Visual and dimensional No failure Capacitance: Mutual capacitance (at 1 MHz, picof
16、arads/foot (pF/ft), max.) 40 Capacitance unbalance (percent, max.) 15 Characteristic impedance (at 1 MHz, ohms) Not applicable Watertightness (Type 2XAOW only) No failure (see table IX of MIL-DTL-24640 for limits of water leakage) Provided by IHSNot for ResaleNo reproduction or networking permitted
17、without license from IHS-,-,-MIL-DTL-24640/6E 4 Weight No failure Group B: Cold bending No failure Cross-link proof test (percent, max.) Jacket 50 Drip (Type 2XAOW only) No failure Tear (lb/in thickness, min.) 35 Physicals (unaged) Jacket Tensile strength (lb/in2, min.) 1300 Elongation (percent, min
18、.) 160 Attenuation (at 3 MHz, dB/100 feet, max.) Not applicable 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 25 (conductor insulation, cycles, Method 1 only, m
19、in.) Permanence of printing (jacket, cycles, min.) 125 Heat distortion (percent of unaged, max.) 30 Cable sealant removability (Type 2XAOW only) No failure Shrinkage No failureSurface transfer impedance Milliohms per meter (max.) 700 EMP response (dB, min.) 60 Group D: Flame propagation No failure Q
20、ualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Aging and compatibility cable No failure Acid gas equivalent (percent, max.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
21、-MIL-DTL-24640/6E 5 Jacket 2 Fillers 2 Insulation 18Halogen 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 index (max.) Jacket 5 Fille
22、rs 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) Not applicable Component wire No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) All types and sizes 2 - 10 50
23、0 All types and sizes 18 - 40 250 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-,-,-M
24、IL-DTL-24640/6E 6 Custodians: Preparing Activity:Army MI Navy SH Navy SH (Project 6145-2009-074) 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-,-,-
