1、 INCH-POUND MIL-DTL-24643/66A 28 January 2010 SUPERSEDING MIL-DTL-24643/66 7 November 2007 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, 1000 VOLTS, TYPE LS2OW This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the prod
2、uct described herein shall consist of this specification sheet and MIL-DTL-24643. Construction (Watertight with Circuit Integrity) First - Copper conductor, coated or uncoated (see table I for size). Second - Thermoset insulation, extruded or taped (see table I for minimum average wall). Third - Opt
3、ional glass braid. Fourth - Optional covering, unless required (see 3.3.5 of MIL-DTL-24643). Fifth - Two conductors shall be cabled together to form a firm, well-rounded assembly with a lay not less than 8 or greater than 16 times the cabled diameter. Standard identification code applied by Method 1
4、 3, or 5. Fillers may be used as necessary to form a firm well-rounded assembly. Sixth - Aluminum foil/polyester tape/aluminum foil. 0.002-inch thick with 45 percent overlap. Seventh - Braided shield of tin-coated copper. AWG and coverage as necessary to comply with shield performance requirements.
5、 Eighth - An optional binder. Ninth - Cross-linked polyolefin jacket (see table I for wall thickness). AMSC N/A FSC 6145 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/66A TABLE I. Details. Overall diameter (inches) Military part no. M
6、24643/66 (type) Conductors size (AWG) Insulation resistance (megohms) Insulation wall thickness min. avg. (inches) Jacket wall thickness min. avg. (inches) Min. Max. Conductor resistance per 1000 feet at 25 C (ohms) -01UO (LS2OW-3) 16 (Class B) 500 0.018 0.027 0.345 0.370 4.3 -02UO (LS2OW-4) 14 (Cla
7、ss B) 500 0.018 0.028 0.366 0.392 2.68 -03UO (LS2OW-9) 10 (Class B) 500 0.018 0.036 0.466 0.499 1.08 -04UO (LS2OW-14) 9 (Class B) 500 0.025 0.040 0.639 0.686 0.859 -05UO (LS2OW-23) 7 (Class B) 500 0.025 0.050 0.743 0.797 0.543 -06UO (LS2OW-50) 3 (Class C) 200 0.035 0.050 0.894 0.959 0.21 -07UO (LS2O
8、W-75) 1 (Class C) 175 0.035 0.050 1.033 1.108 0.134 -08UO (LS2OW-100) 0 (Class D) 160 0.035 0.060 1.149 1.232 0.106 -09UO (LS2OW-200) 0000 (Class D) 125 0.050 0.060 1.519 1.630 0.053 REQUIREMENTS: Qualification Required. INSPECTION: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, ma
9、x.) See table I Voltage withstand (volts, root mean square, min.) Conductor to conductor (sizes 3 9) 3000 Conductor to conductor (sizes 14 200) 5000 Conductor to shield (sizes 3 9) 1500 Conductor to shield (sizes 14 200) 2500 Insulation resistance (megohms/1000 feet, min.) Sizes 3 200 See table I Co
10、nductor and shield continuity No failure Jacket flaws No failure 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/66A Group A: Visual and dimensional No failure Watertightness (see MIL-DTL-24643 for limits of water leakage) No failure
11、Crack resistance No damage (applicable to constructions using glass braids with coverings) Group B: Thermoset proof test (percent, max.) Insulation (extruded insulations only) 50 Jacket (when tested at 200 C) 50 Drip (951 C) Zero Cold bending (cable) No damage Gas flame (1 hour) No failure Physicals
12、 (unaged) Insulation (extruded insulations only) Tensile strength (lb/in2, min.) 700 Elongation (percent, min.) 150 Jacket (cable) Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 160 Tear (lb/in thickness, min.) 35 Group C: Physicals (aged) (air oven) Jacket (cable) Tensile strength
13、percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Shrinkage No failure Heat distortion (percent of unaged, max.) 30 Permanence of printing (conductor Method 1 only) 25 (cycles, min.) Permanence of printing (jacket) (cycles, min.) 125 Cable sealant removability No failure Surface t
14、ransfer impedance Milliohms per meter, max. 700 EMP, response (db, min.) 60 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/66A Group D: Flame propagation (cable) No failure Qualification Inspection: Qualification inspection shall inc
15、lude basic electricals; groups A, B, C, and D; plus the following: Gas flame (3 hours) No failure Aging and compatibility (cable) (1255 C) No failure Abrasion resistance Jacket (75 scraps, min.) No damage Insulation (extruded insulation only, 250 scraps, min.) No damage Acid gas equivalent (percent,
16、 max.) Jacket 2 Fillers 2Insulation 18Halogen content (percent, max.) Jacket 0.2 Fillers 0.2 Insulation 0.2Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index, max. Jacket 25 Fillers 45Insulation 35 Toxicity index, max. Jacket 5 Filler
17、s 5Insulation 1.5Durometer (jacket) Type A (hardness, min.) 80 Weathering (jacket) No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) LS2OW 500 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/66A 5 CHANGES FROM PREVIOUS IS
18、SUE: 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 (Project 6145-2009-109) Review Activities: Army AR, AV, CR Navy CG, EC DLA CC NOTE: The activities li
19、sted 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-,-,-
