1、 INCH-POUND MIL-DTL-24643/59A 28 January 2010 SUPERSEDING MIL-DTL-24643/59 9 September 2005 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, TYPE LSC5FS (INCLUDING VARIATIONS LSC5FSW, LSC5OS, AND LSC5OSW) This specification is approved for use by all Departments and Agencies of the Department of Defens
2、e. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-24643. This cable can be manufactured in four variations: LSC5FS (Metallic Foil Shield, Non-Watertight), LSC5FSW (Metallic Foil Shield, Watertight), LSC5OS (Metallic Foil and Braid Sh
3、ield, Non-Watertight), and LSC5OSW (Metallic Foil and Braid Shield, Watertight). Construction (Metallic Foil Shield, Watertight and Non-Watertight) First - Copper conductor, solid, 24 AWG nominal. Second - Polyolefin insulation. Wall thickness as necessary, in order for the completed cable to comply
4、 with the specified electrical requirements. Maximum insulation diameter shall not exceed 0.046 inch. Third - Two insulated conductors, twisted together such that they comply with the electrical requirements specified herein. Wire identification codes shall be in compliance with ANSI/TIA-568-C.2 as
5、follows: Pair 1 white/blue and blue Pair 2 white/orange and orange Pair 3 white/green and green Pair 4 white/brown and brown Fourth - Four pairs cabled together with a lay as required to comply with electrical requirements. Fifth - For watertight variant, filler material shall comply with the requir
6、ements of 3.3.5 and 3.3.5.3 of MIL-DTL-24643. AMSC N/A FSC 6145 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/59A Construction Variant for Types LSC5FS and LSC5FSW Sixth - An optional binder. Seventh - 24 AWG nominal TC drain wire. Ei
7、ghth - Metallic foil/polyester tape (metallic foil side facing in and in contact with the drain wire). Ninth - Cross-linked polyolefin jacket. Minimum thickness of 0.040 inch. Construction Variant for Types LSC5OS and LSC5OSW Sixth - An optional binder. Seventh - Metallic foil /polyester tape (metal
8、lic foil side facing out and in contact with the braid). Eighth - Braided shield of 36 AWG or 34 AWG tin-coated copper. Coverage as required to comply with shield performance requirements. Ninth - Optional binder. Tenth - Cross-linked polyolefin jacket. Minimum wall thickness of 0.040 inch. TABLE I.
9、 Details. Overall diameter (in.) Military part no. M24643/59 Type Number of pairs Min. Max. -01UO LSC5FS-4 4 0.240 0.360 -02UO LSC5FSW-4 4 0.240 0.380 -03UO LSC5OS-4 4 0.290 0.400 -04UO LSC5OSW-4 4 0.300 0.420 REQUIREMENTS: Qualification Required. INSPECTION: Basic Electricals: DC resistance (ohms/1
10、00 m, max.) 9.38 DC resistance unbalance (percent, max.) 5 Jacket flaws No failure Conductor and shield continuity No failure Voltage withstand Conductor to conductor 1.5kVAC or 2.5kVDC Conductor to shield 1.5kVAC or 2.5kVDC Group A: Visual and dimensional No failure 2 Provided by IHSNot for ResaleN
11、o reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/59A Watertightness (Types LSC5FSW and LSC5OSW only) No failure Capacitance Mutual capacitance of a pair (nominal 1 kHz) 5.6 nf/100 m Pair to ground capacitance unbalance (max. 1 kHz) 330 pf/100 m Input impedance (1 MHz
12、 to 100 MHz) 100 ohms 15% TABLE II. Swept electrical parameters. Frequency (MHz) 1.0 4.0 10 16 31.25 62.5 100 Return loss dB/100 m (min.) 20.0 23.0 25.0 25.0 23.6 21.5 20.1 Insertion loss dB/100 m (max.) 2.0 4.1 6.5 8.2 11.7 17.0 22.0 NEXT dB/100 m (min.) 65.3 56.3 50.3 47.2 42.9 38.4 35.3 ELFEXT dB
13、/100 m (min.) 63.8 51.8 43.8 39.7 33.9 27.9 23.8 PS NEXT dB/100 m (min.) 62.3 53.3 47.3 44.2 39.9 35.4 32.3 PS ELFEXT dB/100 m (min.) 60.8 48.8 40.8 36.7 30.9 24.9 20.8 Propagation delay ns/100 m (max.) 570 552 545 543 540 539 538 Delay skew ns/100 m (max.) 45 45 45 45 45 45 45 NOTE: Values are for
14、reference only. Actual values shall be determined utilizing the formulas in ANSI/TIA-568-C.2. Group B: Drip 951 C (Watertight only) Zero Tear (lb/in thickness, min.) (ASTM D470) 35 Physicals (unaged) Insulation Tensile strength (lb/in2, min.) 700 Elongation (percent, min.) 160 Jacket Tensile strengt
15、h (lb/in2, min.) 1300 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/59A Elongation (percent, min.) 160 Thermoset proof test (percent, max.) Jacket 50 Group C: Physicals (aged air oven) Insulation (polyolefin) Tensile strength (perce
16、nt of unaged, min.) (lb/in2, min.) 75 Elongation (percent of unaged, min.) 75 Jacket (136 C for 168 hrs.) Tensile strength (percent retained, min.) (lb/in2, min.) 60 Elongation (percent retained, min.) 60 Shrinkage No failure Cable filler removability (watertight only) No failure Heat distortion (pe
17、rcent of unaged, max.) 30 Conformance to material, construction and coverage No failure Surface transfer impedance (type LSC5OS and LSC5OSW only) Milliohms per meter, max. 700 EMP response, dB, min. 60 Permanence of printing (jacket) (cycles, min.) 125 Group D: Flame propagation (cable) No failure Q
18、ualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Aging and compatibility (cable) 952 C No failure Abrasion resistance (jacket) 75 Acid gas equivalent (percent, max.) Jacket 2 Fillers 8 Insulation 18Halogen content (percent,
19、 max.) Jacket 0.2 Fillers 0.2Insulation 0.2 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/59A 5 Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index, max. Jacket 25 Fil
20、lers 55Insulation 45 Toxicity index, max. Jacket 5 Fillers 5Insulation 1.5Durometer (jacket) Type A (hardness, min.) 80 Weathering (jacket) No failure Stress resistance No failure Temperature humidity (Types LSC5FSW & LSC5OSW only) No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) LSC5F
21、S, LSC5FSW, LSC5OS, LSC5OSW 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. Custodians: Preparing Activity: Army MI Navy SH Navy SH (Project 6145-2009-102) Review Activities: Ar
22、my 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-,-,-
