1、 INCH-POUND MIL-DTL-24643/5G 1 October 2009 SUPERSEDING MIL-DTL-24643/5F 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, -20 C TO +90 C, 600 VOLTS, TYPE LSMDU This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquir
2、ing the product described herein shall consist of this specification sheet and MIL-DTL-24643. Construction, Watertight First - Copper conductor, coated or uncoated (see table I for size). Second - Separator may be used at manufacturers option where required to provide free-stripping insulation. Thir
3、d - Thermoset insulation (see table I for wall thickness). Standard identification code applied by Method 1 or Method 3. If identification Method 1 is used, insulation color shall be black. Fourth - Nineteen conductors cabled together in accordance with 3.4.4 of MIL-DTL-24643. Cabling sequence to be
4、 consecutive, starting with no. 1 from the center outward. Fillers may be used as necessary to form a firm well-rounded assembly. Fifth - An optional binder. Sixth - Cross-linked polyolefin jacket (see table I for thickness). AMSC N/A FSC 6145 Provided by IHSNot for ResaleNo reproduction or networki
5、ng permitted without license from IHS-,-,-MIL-DTL-24643/5G TABLE I. Details. Military part no. M24643/5 Type and size Conductor AWG size Insulation thickness min. avg. (inch) Cable jacket thickness min. avg. (inch) Overall diameter max. (inch) Conductor resistance (ohms) Insulation resistance (megoh
6、ms) -01UN LSMDU-6 12 (Class B) 0.028 0.060 1.000 1.730 100 -02UN LSMDU-14 9 (Class B) 0.040 0.060 1.395 0.868 100 -03UN LSMDU-23 7 (Class B) 0.052 0.075 1.765 0.598 100 -04UN LSMDU-40 4 (Class C) 0.052 0.075 2.040 0.273 90 -05UN LSMDU-60 2 (Class D) 0.052 0.075 2.330 0.172 75 REQUIREMENTS: Qualifica
7、tion required. INSPECTION: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) See table I Voltage withstand (volts, root mean square, min.) Conductor to conductor 2500 Insulation resistance (megohms/1000 feet, min.) Conductor to conductor See table I Conductor continuity No failu
8、re Group A: Visual and dimensional No failure Watertightness (see MIL-DTL-24643 for limits of water leakage) No failure Group B: Cold bending cable No failure Thermoset proof test (percent, max.) Insulation 50 Jacket (when tested at 200 C) 50 Drip (951 C) Zero Physicals (unaged) Insulation (extruded
9、) Tensile strength (lb/in2, min.) 700 Elongation (percent, min.) 150 Jacket (cable) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/5G Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 160 Tear (lb/in thickness, min.) 35
10、 Group C: Physicals (aged) air oven Insulation (extruded) Tensile strength (percent of unaged, min.) 75 Elongation (percent of unaged, min.) 75 Jacket (cable) Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Permanence of printing (insulation, Method 1 only) (cyc
11、les, min.) 25 Permanence of printing (jacket) (cycles, min.) 125 Heat distortion (percent of unaged, max.) 30 Cable fill (sealant) removability No failure Shrinkage No failure Group D: Flame propagation (cable) No failure Qualification Inspection: Qualification inspection shall include basic electri
12、cals; groups A, B, C, and D; plus the following: Aging and compatibility (cable) (1255 C) No failure Abrasion resistance (jacket) (scrapes, min.) 75 Jacket 2 Fillers 2Insulation 18 Halogen content (percent, max.) Jacket 0.2 Fillers 0.2Insulation 0.2Immersion (jacket) Tensile strength (percent of una
13、ged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index (max.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/5G 4 Jacket 25 Fillers 45 Insulation 45Toxicity index (max.) Jacket 5 Fillers 5Insulation 1.5 Durometer (jacket)
14、 Type A (hardness, min.) 80 Weathering (jacket) No failure Electrical moisture absorption No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) LSMDU- 6, 14 and 23 1000 LSMDU- 40 and 60 500 CHANGES FROM PREVIOUS ISSUE: Marginal notations are not used in this revision to identify changes wi
15、th respect to the previous issue due to the extent of the changes. Custodians: Preparing Activity: Army MI Navy SH Navy SH (Project 6145-2008-010) 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-,-,-
