1、AMSC N/A FSC 6145 INCH-POUND MIL-DTL-24640/7E 8 November 2011 SUPERSEDING MIL-DTL-24640/7D 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRIC, -20 TO +105 C, 600 VOLTS, LIGHTWEIGHT, MULTI-CONDUCTOR, 22 AWG, TYPES 1XMSO AND 1XMSOW This specification is approved for use by all Departments and A
2、gencies 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 (1XMSO) and Watertight (1XMSOW) First - 19-strand, tin-coated copper conductor, 22 AWG. Watertight constructions
3、 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 in accordance with the component wire ratings and requirements listed on this specification sheet. Confor
4、mance testing shall be in accordance with SAE-AS81044 prior to cabling. Component wire color shall be white, unless specified otherwise. Third - Braided shield of 38 AWG tin-coated copper strands. Braid coverage shall be no less than 90 percent determined in accordance with WC-27500. Fourth - Shield
5、 insulation of two polyester tapes or a polyester tape and extruded jacket. Identification codes applied using Method 2. Fifth - The required number of shielded and jacketed singles shall be cabled together. Cabling sequence shall be consecutive, starting with number 1 from center outward. Fillers m
6、ay be used, as necessary, to form a round cable. Sixth - Optional binder tape. Seventh - Braided shield, tin-coated copper strands. Braid must be constructed to meet surface transfer impedance requirements as listed herein. Eighth - Optional binder tape. Ninth - Cross-linked polyolefin jacket (see t
7、able I 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-24640/7E 2 TABLE I. Construction details. PIN M24640/7 Type number Number of component wires Jac
8、ket thickness (inch) (min.) Cable diameter (inch) Cable weight (pounds per 1000 feet) (max.) (min.) (max.) -01UO -02UO -03UO -04UO -05UO -06UO 1XMSO-7 1XMSO-16 1XSMO-70 1XMSOW-7 1XMSOW-16 1XSMOW-70 7 16 70 7 16 70 0.038 0.041 0.044 0.038 0.041 0.044 0.344 0.471 0.859 0.360 0.480 0.875 0.370 0.507 0.
9、925 0.385 0.510 0.925 116.0 212.0 735.0 144.0 255.0 900.0 REQUIREMENTS: Qualification required. Construction details: See table I. 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.
10、 Temperature rating 150 C (302 F) (max.) conductor temperature 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
11、30 seconds (max.) 3.0 inch (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 kHz spark test - 1.5kV root mean square Component wire Impu
12、lse 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 (3923.6 F) for 120 hours Physical properties of primary insula
13、tion Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/7E 3 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)
14、 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 2500 volts (root mean square) Wrap test Mandrel wrap test required INSPECTION: Basic Electricals: Conductor resista
15、nce (ohms/1000 feet at 25 C, max.) 17.11 Voltage withstand (volts, root mean square, min.) Conductor to conductor Not applicable Conductor to shield 1000 Shield to shield 200 Component shield to overall shield 500 Insulation resistance (megohms/1000 feet, min.) Conductor to shield 2500 Shield to shi
16、eld (component shield only) 100 Shield 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.) 120 Capacitance unbalance
17、percent, max.) Not applicable Characteristic impedance (at 1 MHz, ohms) 13 (min.), 30 (max.) Watertightness (type 1XMSOW only) 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
18、 from IHS-,-,-MIL-DTL-24640/7E 4 Group B: Cold bending No failure Cross link proof test (percent, max.) Jacket 50 Drip (type 1XMSOW only) No failure Tear (lb/in thickness, min.) 35 Physicals (unaged) Jacket Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 160 Attenuation (at 3 MHz, dB
19、/100 feet, max.) 4 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 Permanence of printing (jacket, cycles, min
20、) 125 Shield (conformance to material, construction and coverage) No failure Heat distortion (percent of unaged, max.) 30 Cable sealant removability (type 1XMSOW only) No failure Shrinkage No failureSurface transfer impedance Milliohms per meter (max.) 700 EMP response (dB, min.) 60 Group D: Flame
21、propagation No failure Qualification 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.) Jacket 2 Provided by IHSNot for ResaleNo reproduction or networking permi
22、tted without license from IHS-,-,-MIL-DTL-24640/7E 5 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 ind
23、ex (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) Not applicable Component wire No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) All t
24、ypes and sizes 7 & 16 500 feet nominal All types and size 70 250 feet nominal 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 network
25、ing permitted without license from IHS-,-,-MIL-DTL-24640/7E 6 Custodians: Preparing Activity:Army MI Navy SH Navy SH (Project 6145-2009-075) 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-,-,-
