1、 INCH-POUND MIL-DTL-24643/52F 1 October 2009 SUPERSEDING MIL-DTL-24643/52E 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, -20 C TO +90 C, 300 VOLTS, TYPE LSTPNW 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 22 AWG, Class K stranding. Second - Separator may be used at manufacturers option where required to provide free-stripping insula
3、tion. Third - Thermoset insulation 0.009 inch minimum average thickness. Telephone identification code shall be applied by Method 3. Fourth - Two conductors cabled together to form a pair. Maximum lay 2 inches. For LSTPNW-1 only, three conductors, one white, one black, and one red, twisted together
4、to form a triad having a left-hand lay length not greater than 2 inches. Fifth - The required number of pairs (see table I), cabled together with a lay in accordance with MIL-DTL-24643, paragraph 3.4.4. Cabling sequence shall be consecutive, starting with no. 1, from the center outwards. Fillers may
5、 be used as necessary to form a firm well rounded assembly. Sixth - An optional binder. Seventh - 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-24643/52F TABLE I
6、. Details. Overall diameter Military part no. M24643/52 Type and size Number of pairs Cable jacket thickness min. avg. (inch) min. (inch) max. (inch) -01UN LSTPNW-1 1 1/0.040 0.217 0.235 -02UN LSTPNW-3 3 0.040 0.287 0.310 -03UN LSTPNW-5 5 0.040 0.338 0.365 -04UN LSTPNW-10 10 0.040 0.435 0.470 -05UN
7、LSTPNW-15 15 0.040 0.490 0.530 -06UN LSTPNW-20 20 0.040 0.532 0.575 -07UN LSTPNW-30 30 0.050 0.629 0.680 -08UN LSTPNW-40 40 0.050 0.708 0.765 NOTE: 1/Size 1 is composed of three conductors cabled to form a triad. REQUIREMENTS: Qualification required. INSPECTION: Basic Electricals: Conductor resistan
8、ce (ohms/1000 feet at 25 C, max.) 17.94 Voltage withstand (volts, root mean square, min.) Conductor to conductor 2000 Insulation resistance (megohms/1000 feet, min.) Conductor to conductor 1000 Conductor continuity No failure Group A: Visual and dimensional No failure Group B: Cold bending cable No
9、failure Thermoset proof test (percent, max.) Insulation 50 Jacket (when tested at 200 C) 50 Physicals (unaged) Insulation (extruded) Insulation (extruded) 700 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/52F Elongation (percent, mi
10、n.) 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 (cable) Tensile strength (p
11、ercent 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 Qualification Inspection: Qualification inspection shall include basic
12、 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 Fillers 2 Insulation 18Halogen content (percent, max.) Jacket 0.2 Fillers 0.2Insulation 0.2 Immers
13、ion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/52F 4 Smoke index (max.) Jacket 25 Fillers 45 Insulation 45Toxicity index (max.) Jacket
14、 5 Fillers 5Insulation 1.5 Durometer (jacket) - Type A (hardness, min.) 80 Weathering (jacket) No failure Electrical moisture absorption No failure UNIT ORDERING LENGTHS: Type Size Feet (nominal) LSTPNW 1 through 10 2500 LSTPNW 15 through 20 1500 LSTPNW 30 through 40 1000 CHANGES FROM PREVIOUS ISSUE
15、: 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 6145-2008-056) Review Activities: Army AR, AV, CR Navy CG, EC DLA CC NOTE: The activities liste
16、d 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-,-,-
