1、 INCH-POUND MIL-DTL-24643/50E 1 October 2009 SUPERSEDING MIL-DTL-24643/50D 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, -20 C TO +90 C, 1000 VOLTS, TYPE LSFNW This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acq
2、uiring the product described herein shall consist of this specification sheet and MIL-DTL-24643. Construction, Non-Watertight First - Copper conductor, coated or uncoated (see table I for size). Second - Separator may be used at manufacturers option where required to provide free-stripping insulatio
3、n. Third - Thermoset insulation (see table I for thickness). Standard identification code shall be applied by Method 1 or Method 3. If identification Method 1 is used, the insulation color shall be black. Fourth - Four conductors cabled together with a lay in accordance with 3.4.4 of MIL-DTL-24643.
4、Fillers may be used as necessary to form a firm well-rounded assembly. Fifth - An optional binder. Sixth - Cross-linked polyolefin jacket (see table I for thickness). AMSC N/A FSC 6145 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/50E
5、 TABLE I. Details. Overall diameter Military part no. M24643/50 Type and size AWG conductor size Insulation thickness min. avg. (inch) Cable jacket thickness min. avg. (inch) min. (inch) max. (inch) -01UN LSFNW-3 16 (Class B) 0.030 0.040 0.413 0.447 -02UN LSFNW-4 14 (Class B) 0.030 0.040 0.475 0.513
6、 -03UN LSFNW-9 10 (Class B) 0.030 0.040 0.583 0.630 -04UN LSFNW-23 7 (Class B) 0.045 0.055 0.768 0.830 -05UN LSFNW-50 3 (Class C) 0.062 0.055 1.016 1.050 -06UN LSFNW-75 1 (Class C) 0.062 0.065 1.206 1.240 -07UN LSFNW-100 0 (Class D) 0.062 0.065 1.324 1.385 -08UN LSFNW-150 000 (Class D) 0.062 0.065 1
7、.591 1.625 -09UN LSFNW-200 0000 (Class D) 0.072 0.065 1.786 1.820 TABLE II. Electrical details. Type and size Conductor resistance (ohms) Insulation resistance (megohms) Voltage withstand min. (volts) Accelerated service loading current (amperes) LSFNW-3 4.3 6000 4000 N/A LSFNW-4 2.68 5000 4000 N/A
8、LSFNW-9 1.08 3800 4000 N/A LSFNW-23 0.543 3700 5500 115 LSFNW-50 0.210 3000 6000 215 LSFNW-75 0.134 3000 6000 285 LSFNW-100 0.106 2500 6000 335 LSFNW-150 0.0674 2500 6000 440 LSFNW-200 0.0536 2000 6500 525REQUIREMENTS: Qualification required. INSPECTION: Basic Electricals: Conductor resistance (ohms
9、/1000 feet at 25 C, max.) See table II Voltage withstand (volts, root mean square, min.) Conductor to conductor See table II Insulation resistance (megohms/1000 feet, min.) Conductor to conductor See table II Conductor continuity No failure 2 Provided by IHSNot for ResaleNo reproduction or networkin
10、g permitted without license from IHS-,-,-MIL-DTL-24643/50E Group A: Visual and dimensional No failure Group B: Cold bending cable No failure Thermoset proof test (percent, max.) Insulation 50 Jacket (when tested at 200 C) 50 Physicals (unaged) Insulation (extruded) Tensile strength (lb/in2, min.) 70
11、0 Elongation (percent, min.) 150 Jacket (cable) Tensile strength (lb/in2, min.) 1300 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 unaged, min.) 75 Jacket (c
12、able) Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Permanence of printing (insulation), Method 1 only (cycles, min.) 25 Permanence of printing (jacket) (cycles, min.) 125 Heat distortion (percent of unaged, max.) 30 Shrinkage No failure Group D: Flame propaga
13、tion (cable) No failure Qualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Accelerated service Sizes 23 only (see table II for load current) No failure Aging and compatibility (cable) (1255 C) No failure 3 Provided by IHSNot
14、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/50E 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
15、) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index (max.) Jacket 25 Fillers 45Insulation 45 Toxicity index (max.) Jacket 5 Fillers 5Insulation 1.5Durometer (jacket) - Type A (hardness, min.) 80 Weathering (jacket) No failure Electrical moisture absorp
16、tion No failure UNIT ORDERING LENGTHS: Type Size Feet (nominal) LSFNW 3 2500 LSFNW 4 and 9 2000 LSFNW 23 1500 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. 4 Provided by IHSNot fo
17、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/50E 5 Custodians: Preparing Activity: Army MI Navy SH Navy SH (Project 6145-2008-054) Review Activities: Army AR, AV, CR Navy CG, EC DLA CC NOTE: The activities listed above were interested in this document as
18、 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-,-,-
