MIL DTL 24643.65-2007 DETAIL SPECIFICATION SHEE T CABLE, ELECTRICAL, TYPE LS3C179D T .pdf

1、 INCH-POUND MIL-DTL-24643/65 1 March 2007 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, TYPE LS3C179DT (INCLUDING VARIATION LS6C179DT) This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shal

2、l consist of this specification sheet and MIL-DTL-24643. This cable can be manufactured in two variations: LS3C179DT (three internal coaxial cables) and LS6C179DT (six internal coaxial cables). REQUIREMENTS: Qualification Required. Construction (Non-Watertight)First - Copper conductor, uncoated, in

3、accordance with ASTM B286, 0.0122-inch diameter. Second - Thermoset insulation, diameter 0.056 inch nominal. Third - Light bonded aluminum foil-polyester tape, aluminum foil shield. Foil in contact with braid. Fourth - Braided shield of 38 AWG tin-coated copper: minimum coverage 95 percent, diameter

4、 0.079 inch nominal. Fifth - Cross-linked polyolefin jacket. Diameter 0.1000.005 inch. Sixth - The required number of coaxial cables cabled together with a lay in accordance with 3.4.9 of MIL-DTL-24643. Fillers shall be used as necessary to make a firm, well-rounded assembly. Seventh - An optional b

5、inder tape applied helically with overlap. Eighth - Tinned copper braid, 36 gage, 90 percent coverage. Ninth - Cross-linked polyolefin jacket. Minimum thickness of 0.040 inch. AMSC N/A FSC 6145 Source: http:/ - Downloaded: 2008-02-14T01:36ZCheck the source to verify that this is the current version

6、before use.MIL-DTL-24643/65 TABLE I. Details. Overall Diameter (inches) Military Part No. M24643/XX Size Number of Coaxes Diameter over Shield (inches nominal) Cable Jacket Thickness Min. Avg. (inches) Min. Max. Cold Bend Mandrel Diameter (inches) -01UO 3 3 0.240 0.047 0.335 0.365 4.0 -02UO 6 6 0.32

7、5 0.050 0.425 0.455 5.0 EXAMINATION AND TESTS: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) 110 Voltage withstand (volts, root mean square, min.) Conductor to conductor 2000 Conductor to shield 1000 Insulation resistance (megohms/1000 feet, min.) Conductor to conductor 500

8、Conductor to shield 500 Jacket flaws No Failure Conductor and shield continuity No Failure Group A: Visual and dimensional No Failure Characteristic impedance (ohms) 755 (TDR method in accordance with characteristic impedance of MIL-DTL-17) Group B: Thermoset proof test (percent, max.) Overall jacke

9、t 50 Cold bending, cable mandrel diameter 12 times cable diameter No Damage Bending endurance at 25+2 C (cycles, min.) 25 Tear (pounds per inch thickness, min.) (ASTM D470) 35 Physicals (unaged) Insulation Tensile strength (lb/in2, min.) 600 Elongation (percent, min.) 200 Jacket (component) 2 Source

10、: http:/ - Downloaded: 2008-02-14T01:36ZCheck the source to verify that this is the current version before use.MIL-DTL-24643/65 Tensile strength (lb/in2, min.) 1000 Elongation (percent, min.) 100 Jacket (cable) Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 160 Group C: Physicals (a

11、ged) Insulation Air oven Tensile strength (percent of unaged, min.) 80 Elongation (percent of unaged, min.) 80 Jacket (components) Air oven Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Jacket (cable) Air oven Tensile strength (percent of unaged, min.) 60 Elon

12、gation (percent of unaged, min.) 60 Shrinkage No Failure Heat distortion (percent of unaged, max.) 30 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, a

13、nd D, plus the following: Aging stability (cable) (982 C) No Failure (Test in accordance with aging stability of MIL-DTL-17) Dimensional stability (cable) (852 C) No Failure (Test in accordance with dimensional stability of MIL-DTL-17) Abrasion resistance (overall jacket) (scrapes, min.) 75 Acid gas

14、 equivalent (percent, max.) Jacket (component and overall) 2 3 Source: http:/ - Downloaded: 2008-02-14T01:36ZCheck the source to verify that this is the current version before use.MIL-DTL-24643/65 Fillers 2 Insulation 18Shield insulation 2 Halogen content (percent, max.) Jacket (component and overal

15、l) 0.2 Fillers 0.2Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index, max. Jacket (component and overall) 25 Fillers 45Insulation 45 Toxicity index, max. Jacket (component and overall) 5 Fillers 5Insulation 1.5Durometer (overall jacke

16、t) Type A (hardness, min.) 80 Weathering (overall jacket) No Failure UNIT ORDERING LENGTHS: All sizes 500 feet (nominal). Custodians: Preparing Activity: Army MI Navy SH Navy SH (Project 6145-2006-069) Review Activities: Army AR, AV, CR Navy CG, EC DLA IS NOTE: The activities listed above were inter

17、ested 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. 4 Source: http:/ - Downloaded: 2008-02-14T01:36ZCheck the source to verify that this is the current version before use.