1、 INCH-POUND MIL-DTL-24643/60A 28 January 2010 SUPERSEDING MIL-DTL-24643/60 9 September 2005 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, TYPE LSC5 AND LSC5W This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the produc
2、t described herein shall consist of this specification sheet and MIL-DTL-24643. This cable can be manufactured in two variations: LSC5 (Unshielded (UTP), Non-Watertight) and LSC5W (Unshielded (UTP), Watertight). Construction (Non-Watertight and Watertight) First - Copper conductor, solid, 24 AWG nom
3、inal. Second - Polyolefin insulation. Wall thickness as necessary, in order for the completed cable to comply 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 electri
4、cal requirements specified herein. Wire identification codes shall be in compliance with ANSI/TIA-568-C.2 as 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 Construction Variant for Type LSC5 Fourth - Four pairs cabled toge
5、ther with a lay as required to comply with electrical requirements. Fifth - Cross-linked polyolefin jacket. Minimum thickness of 0.040 inch. Construction Variant for Type LSC5W Fourth - Four pairs cabled together with a lay as required to comply with electrical requirements. Fifth - For watertight v
6、ariant, filler material shall comply with the requirements of 3.3.5 and 3.3.5.3 of MIL-DTL-24643. Sixth - An optional binder. Seventh - Cross-linked polyolefin jacket. Minimum thickness of 0.040 inch. AMSC N/A FSC 6145 Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
7、nse from IHS-,-,-MIL-DTL-24643/60A TABLE I. Details. Overall diameter (in.) Military part no. M24643/60 Type Number of pairs Min. Max. -01UN LSC5-4 4 0.220 0.270 -02UN LSC5W-4 4 0.230 0.290 REQUIREMENTS: Qualification Required. INSPECTION: Basic Electricals: DC resistance (ohms/100 m, max.) 9.38 DC
8、resistance unbalance (max.) 5% Jacket flaws No failure Conductor continuity No failure Voltage withstand Conductor to conductor 1.5kVAC or 2.5kVDC Group A: Visual and dimensional No failure Watertightness (Type LSC5W-4 only) No failure Capacitance Mutual capacitance of a pair (nominal 1 kHz) 5.6 nf/
9、100 m Pair to ground capacitance unbalance (max. 1 kHz) 330 pf /100 m Input impedance (1 MHz to 100 MHz) 100 ohms 15% 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/60A TABLE II. Swept electrical parameters. Frequency (MHz) 1.0 4.0 1
10、0 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/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
11、.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 reference only. Actual values shall be determined utilizing the formulas in ANSI/TIA-568-C
12、.2. Group B: Drip (951 C) Zero Tear (lb/in thickness, min.) (ASTM D470) 35 Physicals (unaged) Insulation Tensile strength (lb/in2, min.) 700 Elongation (percent, min.) 160 Jacket Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 160 Thermoset proof test (percent, max.) Jacket 50 Group
13、C: Physicals (aged air oven) Insulation (polyolefin) Tensile strength (percent of unaged, min.) 75 Elongation (percent of unaged, min.) 75 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/60A Jacket Tensile strength (percent of unaged,
14、 min.) 60 Elongation (percent of unaged, min.) 60 Shrinkage No failure Cable filler removability No failure Heat distortion (percent of unaged, max.) 30 Conformance to material, construction and coverage No failure Permanence of printing (jacket) (cycles, min.) 125 Group D: Flame propagation (cable)
15、 No failure Qualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Aging and compatibility (cable) (951 C) No failure Abrasion resistance (jacket) 75 Acid gas equivalent (percent, max.) Jacket 2 Fillers 8 Insulation 18Halogen co
16、ntent (percent, max.) Jacket 0.2 Fillers 0.2Insulation 0.2 Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index, max. Jacket 25 Fillers 55Insulation 45 Toxicity index, max. Jacket 5 Fillers 5Insulation 1.54 Provided by IHSNot for Resale
17、No reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/60A 5 Durometer (jacket) Type A (hardness, min.) 80 Weathering (jacket) No failure Temperature humidity (LSC5W only) No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) LSC5, LSC5W 500 CHANGES FROM PREVIOUS
18、 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 6145-2009-103) Review Activities: Army AR, AV, CR Navy CG, EC DLA CC NOTE: The activities
19、 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-,-,-
