1、 INCH-POUND MIL-DTL-24643/11E 1 October 2009 SUPERSEDING MIL-DTL-24643/11D 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, -20 C TO +90 C, 600 VOLTS, TYPE LSSSF This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acqu
2、iring the product described herein shall consist of this specification sheet and MIL-DTL-24643. Construction, Non-Watertight First - Copper conductor, uncoated, 300 MCM AWG, Class G stranding (see note 1). Second - Separator may be used at manufacturers option where required to provide free-strippin
3、g insulation. Third - Thermoset insulation. Minimum average wall thickness of 0.075 inch. Fourth - Optional reinforcement. Fifth - Cross-linked polyolefin jacket bonded to the underlying insulation. Minimum average wall thickness of 0.075 inch. NOTE: The copper shall be hard drawn, having a minimum
4、tensile strength of 67,200 lb/in, and minimum elongation of 0.85 percent in 60-inch lengths before stranding. The resistance specified is based on 102.7 percent of the values required for annealed bare copper. AMSC N/A FSC 6145 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
5、hout license from IHS-,-,-MIL-DTL-24643/11E TABLE I. Details. Overall diameter Military part no. M24643/11 Type and size Conductor size min. (inch) max. (inch) -01UN LSSSF-7 300 MCM (Class G) 1.020 1.100 REQUIREMENTS: Qualification required. INSPECTION: Basic Electricals: Conductor resistance (ohms/
6、1000 feet at 25 C, max.) 0.0388 Voltage withstand (volts, root mean square, min.) Conductor to ground 2500 Insulation resistance (megohms/1000 feet, min.) Conductor to ground 100 Conductor continuity No failure Group A: Visual and dimensional No failure Group B: Cold bending cable at minus 302 C two
7、 turns around No damage an 8.5“ mandrel Thermoset proof test (percent, max.) Insulation 50Jacket (when tested at 200 C) 50 Drip (951 C) Zero Physicals (unaged) Insulation (extruded) Tensile strength (lb/in2, min.) 700 Elongation (percent, min.) 150 Jacket (cable) Tensile strength (lb/in2, min.) 1300
8、 Elongation (percent, min.) 160 Tear (lb/in thickness, min.) 35 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/11E Group C: Physicals (aged) air oven Insulation (extruded) Tensile strength (percent of unaged, min.) 75 Elongation (per
9、cent of unaged, min.) 75 Jacket (cable) Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Permanence of printing (jacket) (cycles, min.) 125 Heat distortion (percent of unaged, max.) 30 Shrinkage No failure Group D: Flame propagation (cable) No failure Qualificati
10、on Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Aging and compatibility (cable) (1255 C) No failure Abrasion resistance (jacket) (scrapes, min.) 75 Acid gas equivalent (percent, max.) Jacket 2 Insulation 18 Halogen content (percent,
11、 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 45Toxicity index (max.) Jacket 5 Insulation 1.5 Durometer (jacket) - Type A (hardness, min.) 80 3 Provided by IHSNot for Re
12、saleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/11E 4 Weathering (jacket) No failure Electrical moisture absorption No failure UNIT ORDERING LENGTHS: Type and size Feet (minimum) Feet (maximum) LSSSF-7 1045 1155 CHANGES FROM PREVIOUS ISSUE: Marginal notations a
13、re 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 6145-2008-015) Review Activities: Army AR, AV, CR Navy CG, EC DLA CC NOTE: The activities listed above were intereste
14、d 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-,-,-
