1、AMSC N/A FSC 6145 INCH-POUND MIL-DTL-24640/17E 8 November 2011 SUPERSEDING MIL-DTL-24640/17D 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRIC, -20 TO +105 C, 600 VOLTS, LIGHTWEIGHT, MULTI-PAIR, 26 AWG, TYPE 2XOW This specification is approved for use by all Departments and Agencies of the D
2、epartment of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-24640. Construction (Watertight) First - Tin-coated copper conductor in accordance with table I. Second - Insulation material and basic construction requirements sh
3、all be in accordance with SAE-AS81044/12. Testing shall be in accordance with the component wire ratings and requirements listed on this specification sheet. Conformance testing shall be in accordance with SAE-AS81044 prior to cabling. Third - Two conductors twisted together. Pair lay length shall b
4、e in accordance with table III. Twisted pair identification code, one black and one white, applied using Method 6, or telephone color code applied using Method 3. For 2XOW-77, if telephone color code is used, repeat the color code of pairs 1-11, in sequence, for pairs 67-77. Fourth - The required nu
5、mber of twisted pairs shall be cabled together in accordance with table II with a lay length not greater than 16 times the diameter over the outermost layer. Cable sequence shall be consecutive, starting with number 1 from center outward. Fillers may be used, as necessary, to form a round cable. Fif
6、th - 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 II for thickness). NOTE: Manufacturers identifi
7、cation tape or thread is required (see 3.7.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/17E 2 TABLE I. Component wire details. Watertight conductor Finished wire Wire size (AWG) Stranding (no. x AWG) Test load life cycle accelera
8、ted aging tests (lbs 3%) Low temp. at -40 C Mandrel diameter (inches) Test load (lbs) 26 7 x 34 0.125 0.50 0.50 TABLE II. Construction details. PIN M24640/17 Type number Number of pairs Jacket thickness (inch) (min.) Cable diameter (inch) Cable weight (pounds per 1000 feet) (max.) (min.) (max.) -01U
9、O -02UO -03UO -04UO -05UO -06UO 2XOW-6 2XOW-18 2XOW-24 2XOW-42 2XOW-60 2XOW-77 6 18 24 42 60 77 0.038 0.041 0.044 0.044 0.047 0.047 0.336 0.468 0.546 0.646 0.744 0.840 0.363 0.504 0.588 0.686 0.802 0.906 181.6 201.0 266.0 380.0 485.0 615.0 Provided by IHSNot for ResaleNo reproduction or networking p
10、ermitted without license from IHS-,-,-MIL-DTL-24640/17E 3 TABLE III. Pair lay 1/. Pair no. Pair lay (inches) Pair no. Pair lay (inches) Pair no. Pair lay (inches) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 1.5 1.0 2.0 3.0 4.5 1.0 2.0 3.0 1.5 2.5 5.5 1.5 2.5 3.7 5.5 1.5 2.5
11、3.7 1.5 2.5 3.7 5.5 1.0 2.0 3.0 4.5 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 1.0 2.0 3.0 4.5 1.0 2.0 3.0 4.5 1.0 2.0 3.0 4.5 1.0 2.0 3.0 4.5 1.0 1.5 2.0 2.5 3.0 4.5 5.5 1.0 1.5 2.0 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 2.5 3.0
12、 4.5 5.5 1.0 1.5 2.0 2.5 3.0 4.5 5.5 1.0 1.5 2.0 2.5 3.0 4.5 5.5 1.0 1.5 2.0 2.5 3.0 4.5 5.5 NOTE: 1/ All lays are left-handed. TABLE IV. Assembly. Type number Core Assembly Layer 1 Layer 2 Layer 3 Layer 4 2XOW-6 2XOW-18 2XOW-24 2XOW-42 2XOW-60 2XOW-77 - Pair 1 Pairs 1-2 - Pair 1 Pairs 1-3 Pairs 1-6
13、 Pairs 2-6 Pairs 3-10 Pairs 1-8 Pairs 2-7 Pairs 4-12 - Pairs 7-18 Pairs 11-24 Pairs 9-22 Pairs 8-19 Pairs 13-27 - - - Pairs 23-42 Pairs 20-36 Pairs 28-49 - - - - Pairs 37-60 Pairs 50-77 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/17
14、E 4 REQUIREMENTS: Qualification required. Construction details: See tables I, II, III, and IV. 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 135 C (275 F) (m
15、ax.) conductor temperature Voltage rating 600 volts (root mean square) at sea level Accelerated aging Oven temperature, 2502 C (4823.6 F) for 6 hours Low temp. cold bend -40 C (-40 F) for 4 hours Blocking 1502 C (3023.6 F) Color In accordance with MIL-STD-104, Class 1; white preferred Flammability 3
16、0 seconds (max.) 3.0 inches (max.) No flaming of tissue paper Humidity resistance 5000 megohms for 1000 feet (min.) insulation resistance after humidity exposure Dielectric test Primary insulation 6.0 kilovolts (peak), 100 percent impulse test (when tested in lieu of spark test) Finished wire 8.0 ki
17、lovolts (peak), or 3 kHz spark test 5.5 kV, 100 percent test Insulation resistance 5000 megohms for 1000 feet (min.) Life cycle Oven temperature, 2002 C (3923.6 F) for 120 hours Physical properties of primary insulation Tensile strength 2500 lb/in2(min.) Elongation 150 percent (min.) Shrinkage 0.125
18、 inch (max.) at 2502 C (4822 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 Oven temperature, 1502 C (3023.6 F) Maximum change in measurement 0.060 inch Wet dielectric test
19、 2500 volts (root mean square) Wrap test Mandrel wrap test required Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/17E 5 INSPECTION: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) 46.01 Voltage withstand (volts,
20、 root mean square, min.) Conductor to conductor and shield 1000 Component shield to component shield Not applicable Component shield to overall shield Not applicable Insulation resistance (megohms/1000 feet, min.) Conductor to conductor and shield 2500 Shield to shield (component shield only) 100 Sh
21、ield to shield (component shield to overall shield) 100 Conductor and shield continuity No failure Jacket flaws No failure Group A: Visual and dimensional No failure Capacitance Mutual capacitance (at 1 MHz, picofarads/foot (pF/ft), max.) 60 Capacitance unbalance (percent, max.) 15 Characteristic im
22、pedance (at 1 MHz, ohms) 70 (min.), 105 (max.) 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) Ja
23、cket Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 160 Attenuation (at 3 MHz, dB/100 feet, max.) 3 Gas flame (1 hour) Not applicable Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/17E 6 Group C: Physicals (aged), air
24、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 No
25、 failure Shrinkage No failureSurface transfer impedance 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 compatibili
26、ty (cable) 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
27、 10Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/17E 7 Toxicity 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 resist
28、ance No failure Gas flame (3 hour) Not applicable Component wire No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) 2XOW-6, 2XOW-18, 2XOW-24, 2XOW-42, 2XOW-60, 2XOW-77 6 & 18 500 24 - 77 250 CHANGES FROM PREVIOUS ISSUE: Marginal notations are not used in this revision to identify changes
29、 with respect to the previous issue due to the extent of the changes. Custodians: Preparing Activity:Army MI Navy SH Navy SH (Project 6145-2009-085) 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-,-,-
