1、 INCH-POUND MIL-DTL-24643/67A 28 January 2010 SUPERSEDING MIL-DTL-24643/67 7 November 2007 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, -20 C TO + 105 C, 1000 VOLTS, TYPE LS3OW This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for
2、acquiring the product 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 w
3、all). Third - Optional glass braid. Fourth - Optional covering, unless required (see 3.3.5 of MIL-DTL-24643). Fifth - Three 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 a
4、pplied by Method 1, 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 perform
5、ance requirements. 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-24643/67A TABLE I. Details. Overall diameter (inches) M
6、ilitary part no. M24643/67 (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 (LS3OW-3) 16 (Class B) 500 0.018 0.027 0.367 0.394 4.3 -02UO (L
7、S3OW-4) 14 (Class B) 500 0.018 0.028 0.390 0.418 2.68 -03UO (LS3OW-9) 10 (Class B) 500 0.018 0.036 0.497 0.533 1.08 -04UO (LS3OW-14) 9 (Class B) 500 0.018 0.040 0.684 0.733 0.859 -05UO (LS3OW-23) 7 (Class B) 500 0.030 0.050 0.769 0.853 0.543 -06UO (LS3OW-50) 3 (Class C) 200 0.030 0.050 0.957 1.027 0
8、.21 -07UO (LS3OW-75) 1 (Class C) 175 0.035 0.050 1.107 1.187 0.134 -08UO (LS3OW-100) 0 (Class D) 160 0.035 0.060 1.231 1.321 0.106 -09UO (LS3OW-200) 0000 (Class D) 125 0.050 0.060 1.630 1.748 0.053 -10UO (LS3OW-300) 300 MCM (Class D) 110 0.050 0.075 1.916 2.055 0.0377 -11UO (LS3OW-400) 400 MCM (127)
9、 100 0.050 0.075 2.190 2.349 0.0273 REQUIREMENTS: Qualification 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 (sizes 3 9) 3000 Conductor to conductor (sizes 14 400) 500
10、0 Conductor to shield (sizes 3 9) 1500 Conductor to shield (sizes 14 400) 2500 Insulation resistance (megohms/1000 feet, min.) Sizes 3 400 See table I 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/67A Conductor and shield continuity
11、 No failure Jacket flaws No failure Group A: Visual and dimensional No failure Watertightness (see MIL-DTL-24643 for limits of water leakage) No failure Crack resistance No damage (applicable to constructions using glass braids with coverings) Group B: Thermoset proof test (percent, max.) Insulation
12、 (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 (unaged) Insulation (extruded insulation only) Tensile strength (lb/in2, min.) 700 Elongation (percent, min.) 150 Jacket (cable) Tensile strength
13、(lb/in2, min.) 1300 Elongation (percent, min.) 160 Tear (lb/in thickness, min.) 35 Group C: Physicals (aged) (air oven) Jacket (cable) Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Shrinkage No failure Heat distortion (percent of unaged, max.) 30 Permanence of
14、 printing (conductor Method 1 only) 25 (cycles, min.) Permanence of printing (jacket) (cycles, min.) 125 Cable sealant removability No failure Surface transfer impedance 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/67A Milliohms pe
15、r meter, max. 700 EMP, response (db, min.) 60 Group D: Flame propagation (cable) No failure Qualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Gas flame (3 hours) No failure Aging and compatibility (cable) (1255 C) No failur
16、e Abrasion resistance Jacket (75 scraps, min.) No damage Insulation (extruded insulation only, 250 scraps, min.) No damage Acid gas equivalent (percent, max.) Jacket 2 Fillers 2Insulation 18Halogen content (percent, max.) Jacket 0.2 Fillers 0.2 Insulation 0.2Immersion (jacket) Tensile strength (perc
17、ent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index, max. Jacket 25 Fillers 45Insulation 35 Toxicity index, max. Jacket 5 Fillers 5Insulation 1.5Durometer (jacket) Type A (hardness, min.) 80 Weathering (jacket) No failure UNIT ORDERING LENGTHS: 4 Provided by IHSNot for Resale
18、No reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/67A 5 Type and size Feet (nominal) LS3OW 500 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. Custo
19、dians: Preparing Activity: Army MI Navy SH Navy SH (Project 6145-2009-110) 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-,-,-
