1、 INCH-POUND MIL-DTL-24643/53F 1 October 2009 SUPERSEDING MIL-DTL-24643/53E 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, -20 C TO +90 C, 3000 VOLTS, TYPES LSSRW, LSDRW, AND LSTRW This specification is approved for use by all Departments and Agencies of the Department of Defense. The r
2、equirements for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-24643. Construction, Watertight First - Copper conductor, coated or uncoated 14 AWG, Class B stranding. Second - Separator may be used at manufacturers option where required to provide free-s
3、tripping insulation. Third - Thermoset insulation. Insulation wall thickness 0.080 inch minimum average. Standard identification code shall be applied by Method 1 or Method 3. If Method 1 is used, the insulation color shall be black. Fourth - The required two or three conductors cabled together with
4、 a lay in accordance with 3.4.4 of MIL-DTL-24643. Fillers may be used as necessary to form a firm well-rounded assembly. NOTE: For LSSRW, omit fourth. Fifth - An optional binder. Sixth - Cross-linked polyolefin jacket. Minimum average wall thickness of 0.050 inch. AMSC N/A FSC 6145 Provided by IHSNo
5、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/53F TABLE I. Details. Military part no. M24643/53 Cable type Number of conductors Overall diameter max. (inch) Conductor resistance (ohms) -01UN LSSRW 1 0.400 2.69 -02UN LSDRW 2 0.670 2.75 -03UN LSTRW 3 0.
6、710 2.75 REQUIREMENTS: Qualification required. INSPECTION: Basic Electricals: Conductor resistance (ohms/1000 feet at 25C, max.) See table I Voltage withstand (volts, root mean square, min.) Conductor to conductor (Types LSDRW and LSTRW only) 8000 Conductor to ground (Type LSSRW only) 8000 Insulatio
7、n resistance (megohms/1000 feet, min.) Conductor to conductor (Types LSDRW and LSTRW only) 9500 Conductor to ground (Type LSSRW only) 9500 Conductor continuity No failure Group A: Visual and dimensional No failure Watertightness (see MIL-DTL-24643 for limits of water leakage) No failure Group B: Col
8、d 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) Tensile strength (lb/in2, min.) 700 Elongation (percent, min.) 150 Jacket (cable) Tensile strength (lb/in2, min.) 1300 2 Provided
9、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/53F Elongation (percent, min.) 160 Tear (lb/in thickness, min.) 35 Group C: Physicals (aged) air oven Insulation (extruded) Tensile strength (percent of unaged, min.) 75 Elongation (percent of unag
10、ed, min.) 75 Jacket (cable) Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Permanence of printing (conductor), Method 1 only 25 (Types LSDRW and LSTRW only) (cycles, min.) Permanence of printing (jacket) (cycles, min.) 125 Heat distortion (percent of unaged, ma
11、x.) 30 Shrinkage No failure Cable Sealant removability (Types LSDRW and LSTRW only) 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)
12、(1255 C) No failure Abrasion resistance (jacket) (scrapes, min.) 75 Acid gas equivalent (percent, max.) Jacket 2 Fillers 2 Insulation 18Halogen content (percent, max.) Jacket 0.2 Fillers 0.2Insulation 0.2 Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged,
13、 min.) 50 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/53F 4 Smoke index (max.) Jacket 25 Fillers 45 Insulation 45Toxicity index (max.) Jacket 5 Fillers 5Insulation 1.5 Durometer (jacket) - Type A (hardness, min.) 80 Weathering (ja
14、cket) No failure Electrical moisture absorption No Failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) LSSRW 2500 LSDRW and LSTRW 2000 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
15、 changes. Custodians: Preparing Activity: Army MI Navy SH Navy SH (Project 6145-2008-057) 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-,-,-
