1、 INCH-POUND MIL-DTL-24643/9F 1 October 2009 SUPERSEDING MIL-DTL-24643/9E 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, -20 C TO +90 C, TYPE LSMRI This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the pro
2、duct described herein shall consist of this specification sheet and MIL-DTL-24643. Construction, Non-Watertight First - Copper conductor, coated or uncoated, Class K stranding (see table I for size). Second - Separator may be used at manufacturers option where required to provide free-stripping insu
3、lation. Third - Thermoset insulation. Minimum average wall thickness of 0.020 inch. Standard identification code applied by Method 3. Fourth - The specified number of conductors shall be cabled together in accordance with 3.4.4 of MIL-DTL-24643. AMSC N/A FSC 6145 Provided by IHSNot for ResaleNo repr
4、oduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/9F TABLE I. Details. Conductors Insulated conductor diameter Military part no. M24643/9 Type and size No. AWG min. (inch) max. (inch) Conductor resistance (ohms) -01UN LSMRI-D-1 2 20 0.068 0.075 11.05 -02UN LSMRI-D-2 2 16 0.
5、092 0.102 4.36 -03UN LSMRI-T-2 3 16 0.092 0.102 4.36 REQUIREMENTS: Qualification required. INSPECTION: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) See table I Voltage withstand (volts, root mean square, min.) Conductor to conductor, 20 AWG 1000 Conductor to conductor, 16 A
6、WG 1500 Insulation resistance (megohms/1000 feet, min.) Conductor to conductor (all sizes) 100 Conductor continuity No failure Group A: Visual and dimensional No failure Group B: Thermoset proof test (percent, max.) Insulation 50 Physicals (unaged) Insulation (extruded) Tensile strength (lb/in2, min
7、) 700 Elongation (percent, min.) 150 Group C: Physicals (aged) air oven Insulation (extruded) Tensile strength (percent of unaged, min.) 75 Elongation (percent of unaged, min.) 75 Heat distortion (percent of unaged, max.) 30 2 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
8、hout license from IHS-,-,-MIL-DTL-24643/9F 3 Group D: Flame propagation (cable) Not applicable Qualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Acid gas equivalent (percent, max.) Insulation 18Halogen content (percent, max
9、) Insulation 0.2Smoke index (max.) Insulation 45 Toxicity index (max.) Insulation 1.5Electrical moisture absorption No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) LSMRI-D-1 600 LSMRI-D-2 600 LSMRI-T-2 500 CHANGES FROM PREVIOUS ISSUE: Marginal notations are not used in this revision
10、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 6145-2008-013) 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-,-,-
