1、 INCH-POUND MIL-DTL-24643/30F 1 October 2009 SUPERSEDING MIL-DTL-24643/30E 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, -20 C TO +90 C, TYPE LS1SWU This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the
2、product described herein shall consist of this specification sheet and MIL-DTL-24643. Construction, Watertight First - Copper conductor, coated or uncoated, ASTM B286, Size 22 7 strands. Second - Separator may be used at manufacturers option where required to provide free-stripping insulation. Third
3、 - Thermoset insulation. Nominal wall thickness of 0.048 inch. Wall thickness may vary from nominal as necessary in order for completed cable to meet the specified electrical requirements. Fourth - Braided shield of 36 AWG, coated or uncoated copper. Braid angle of 30 to 35 degrees; minimum coverage
4、 of 85 percent. Fifth - Shield insulation of two polyester tapes, outer tape sealed. An alternate shield insulation may consist of one polyester tape, plus an extruded jacket of a suitable transparent material, minimum average thickness of the transparent material 0.003 inch. The standard identifica
5、tion code shall be applied by Method 2. Sixth - The specified number of shielded singles (see table I) shall be cabled together in accordance with 3.4.4 of MIL-DTL-24643. Cabling sequence shall be consecutive starting with no. 1 from the center outward. Fillers may be used as necessary to form a fir
6、m well-rounded assembly. Seventh - An optional binder. Eighth - Cross-linked polyolefin jacket (see table I for thickness) AMSC N/A FSC 6145 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/30F TABLE I. Details. Overall diameter Military
7、 part no. M24643/30 Type and size Number of conductors Cable jacket thickness min. avg. (inch) Min. (inch) Max. (inch) -01UN LS1SWU-2 2 0.038 0.430 0.455 -02UN LS1SWU-14 14 0.050 0.825 0.870 -03UN LS1SWU-20 20 0.050 0.970 1.030 -04UN LS1SWU-30 30 0.063 1.135 1.200 REQUIREMENTS: Qualification require
8、d. INSPECTION: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) 17.2 Voltage withstand (volts, root mean square, min.) Conductor to component shield 3000 Component shield to component shield 500 Insulation resistance (megohms/1000 feet, min.) Conductor to component shield 500 C
9、omponent shield to component shield 100 Conductor continuity No failure Shield continuity No failure Group A: Visual and dimensional No failure Hydrostatic (open end) (leakage at 300 lb/in2, 2 hours, in3, max.) 1.0 Capacitance (mutual), at 1 kilohertz (KHz) (pF/ft, max.) 28 Characteristic impedance,
10、 at 1 megahertz (MHz) (ohms) 613 Group B: Thermoset proof test (percent, max.) Insulation 50Jacket (when tested at 200 C) 50 Physicals (unaged) Insulation (extruded) Tensile strength (lb/in2, min.) 700 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
11、,-MIL-DTL-24643/30F Elongation (percent, min.) 150 Jacket (cable) Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 160 Tear (lb/in thickness, min.) 35 Drip (951 C) Zero Group C: Physicals (aged) air oven Insulation (extruded) Tensile strength (percent of unaged, min.) 75 Elongation (p
12、ercent of unaged, min.) 75 Jacket (cable) Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Permanence of printing (jacket) (cycles, min.) 125 Heat distortion (percent of unaged, max.) 30 Shrinkage No failure Shield (conformance to material, construction and cover
13、age) No failure Group D: Flame propagation (cable) No failure Qualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Aging and compatibility (cable) (1255 C) No failure Abrasion resistance (jacket) (scrapes, min.) 75 Acid gas eq
14、uivalent (percent, max.) Jacket 2 Fillers 2 Insulation 18Shield insulation 2 Halogen content (percent, max.) Jacket 0.2 Fillers 0.2Insulation 0.23 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/30F 4 Immersion (jacket) Tensile strength
15、 (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index (max.) Jacket 25 Fillers 45Insulation 45 Toxicity index (max.) Jacket 5 Fillers 5Insulation 1.5Durometer (jacket) - Type A (hardness, min.) 80 Weathering (jacket) No failure Electrical moisture absorption No failure UN
16、IT ORDERING LENGTHS: Type and size Feet (nominal) LS1SWU all sizes 1000 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. Custodians: Preparing Activity: Army MI Navy SH Navy SH (Proj
17、ect 6145-2008-034) Review Activities: Army AR, AV, CR 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 http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
