1、 INCH-POUND MIL-DTL-24643/61A 28 January 2010 SUPERSEDING MIL-DTL-24643/61 9 September 2005 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, TYPE LSC5P, LSC5POS, AND LSC5POSR This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquir
2、ing the product described herein shall consist of this specification sheet and MIL-DTL-24643. This cable can be manufactured in three variations: LSC5P (Unshielded Patch Cable, Non-Watertight), LSC5POS (AWG 24, Metallic Foil and Braid Patch Cable, Non-Watertight), and LSC5POSR (AWG 26, Metallic Foil
3、 and Braid Patch Cable, Non-Watertight). Construction (Shielded and UTP, Non-Watertight) First - Copper conductor, tin-coated, stranded, 24 AWG or 26 AWG. Second - Polyolefin insulation. Wall thickness as necessary, in order for the completed cable to comply with the specified electrical requirement
4、s. 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 follows: Pair 1 white/blue and blue Pair 2
5、 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. Construction Variant for Type LSC5P Fifth - Cross-linked polyolefin jacket. Minimum thickness of 0.040 inch. Construct
6、ion Variant for Types LSC5POS and LSC5POSR Fifth - An optional binder. Sixth - Metallic foil/polyester tape (metallic foil side facing out and in contact with the braid). Seventh - Braided shield of 36 AWG or 34 AWG tin-coated copper. Coverage as required to comply with shield performance requiremen
7、ts. Eighth - An optional binder. AMSC N/A FSC 6145 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/61A Ninth - Cross-linked polyolefin jacket. Minimum thickness of 0.040 inch. TABLE I. Details. Overall diameter (in.) Military part no. M
8、24643/61 AWG Type Number of pairs Min. Max. -01UN 24 LSC5P-4 4 0.230 0.280 -02UD 24 LSC5POS-4 4 0.290 0.370 -03UD 26 LSC5POSR-4 4 0.230 0.280 REQUIREMENTS: Qualification Required. INSPECTION: Basic Electricals: DC resistance (ohms/100 m) 26 AWG (max.) 14 24 AWG (max.) 9.38 DC resistance unbalance (p
9、ercent, max.) 5 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 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 im
10、pedance (1 MHz to 100 MHz) 100 ohms 15% 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/61A 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
11、20.1 Insertion loss dB/100 m 24 AWG (max.) 2.4 4.9 7.8 9.8 14.0 20.4 26.4 Insertion loss dB/100 m 26 AWG (max.) 3.0 6.2 9.8 12.3 17.6 25.5 33.0 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.
12、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.
13、2. Group B: Drip (951 C) Zero Tear (lb/in thickness, min.) (ASTM D470) 35 Physicals (unaged) Insulation (polyolefin) Tensile strength (lb/in2min.) 700 Elongation (percent, min.) 160 Jacket Tensile strength (lb/in2min.) 1300 Elongation (percent, min.) 160 Thermoset proof test (percent, max.) Jacket 5
14、0 Group C: Physicals (aged air oven) Insulation (polyolefin) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/61A Tensile strength (percent of unaged, min.) (lb/in2min.) 75 Elongation (percent of unaged, min.) 75 Jacket Tensile strengt
15、h (percent of unaged, min.) (lb/in2min.) 60 Elongation (percent of unaged, min.) 60 Shrinkage No failure Heat Distortion (percent of unaged, max.) 30 Conformance to material, construction and coverage No failure Surface transfer impedance (Types LSC5POS and LSC5POSR) Milliohms (per meter, max.) 700
16、EMP response (dB, min.) 60 Permanence of printing (jacket) (cycles, min.) 125 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) (952 C) No failur
17、e Abrasion resistance (jacket) 75 Acid gas equivalent (percent, max.) Jacket 2 Insulation 18 Halogen content (percent, max.) Jacket 0.2 Insulation 0.2Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index, max. Jacket 25 Insulation 45Toxi
18、city index, max. Jacket 5 Insulation 1.5 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/61A 5 Durometer (jacket) Type A (hardness, min.) 80 Weathering (jacket) No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) LSC5P, LSC
19、5POS, LSC5POSR 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 6145-2009-104) Review Activities: Army AR, AV, CR
20、 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-,-,-
