1、AMSC N/A FSC 6145 INCH-POUND MIL-DTL-24640/21E 8 November 2011 SUPERSEDING MIL-DTL-24640/21D 22 August 2002 DETAIL SPECIFICATION SHEET CABLE, ELECTRIC, -20 TO +105 C, 600 VOLTS, LIGHTWEIGHT, FOUR-CONDUCTOR, LOW POWER, TYPE FXW (INCLUDING VARIATION TYPE FXOW) This specification is approved for use by
2、 all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-24640. Construction (Watertight with Circuit Integrity) First - Copper conductor, coated or uncoated in accordance with ASTM B
3、8, 7 strands in accordance with tables I and II for the applicable type. Second - Mica glass tape insulation 0.00290.0002 inch (50 percent overlap maximum and minimum overlap of 45 percent). Conformance testing shall be in accordance with MIL-DTL-81381 prior to cabling. Third - Opaque-pigmented poly
4、imide tape 0.001 inch (50 percent overlap minimum). Fourth - Opaque-pigmented polyimide 0.001 inch with 0.0001 inch Fluorinated Ethylene Propylene (FEP) tape (50 percent overlap minimum). Fifth - Modified aromatic polyimide resin coating 0.0005 inch minimum (0.001 inch nominal). Identification codes
5、 applied using Method 1 or 3. Construction Variant for Type FXW Sixth - Four component wires shall be cabled together. Fillers may be used, as necessary, to form a round cable. Seventh - Optional binder tape. Eighth - Cross-linked polyolefin jacket (see table I for thickness). NOTE: Manufacturers id
6、entification tape or thread is required (see 3.7.3). Construction Variant for Type FXOW Eighth - Braided shield, tin-coated copper strands. Braid must be constructed to meet surface transfer impedance requirements as listed herein. Ninth - Optional binder tape. Tenth - Cross-linked polyolefin jacket
7、 (see table II for thickness). NOTE: Manufacturers identification tape or thread is required (see 3.7.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/21E 2 TABLE I. Construction details. PIN M24640/21 Type number AWG size Component
8、wire diameter (inch) Jacket thickness (inch) (min.) Cable diameter (inch) Cable weight (pounds per 1000 feet) (max.) Conductor resistance per 1000 feet (ohms) (min.) (max.) (min.) (max.)-01UN -02UN FXW-3 FXW-4 16 14 0.075 0.091 0.081 0.097 0.034 0.038 0.266 0.315 0.286 0.339 78.2 115.1 4.35 2.88 TAB
9、LE II. Construction details - overall shield. PIN M24640/21 Type number AWG size Component wire diameter (inch) Jacket thickness (inch) (min.) Cable diameter (inch) Cable weight (pounds per 1000 feet) (max.) Conductor resistance per 1000 feet (ohms) (min.) (max.) (min.) (max.) -01UO -02UO FXOW-3 FXO
10、W-4 16 14 0.075 0.091 0.081 0.097 0.038 0.041 0.324 0.366 0.350 0.394 131.6 164.9 4.35 2.88 REQUIREMENTS: Qualification required. Construction details: See tables I and II. Component wire: For polyimide tape constructions, the following additional tests shall be applicable in accordance with MIL-DTL
11、-81381. Temperature rating 150 C (302 F) (max.) conductor temperature Voltage rating 600 volts (root mean square) at sea level Blocking Oven temperature, 1502 C (3023.6 F) no sticking of conductors Flammability 3 seconds (max.) after flame 3.0 inches (max.) flame travel No flaming of tissue paper Hu
12、midity resistance 5 megohms for 1000 feet (min.) insulation resistance after humidity exposure Impulse dielectric test 8.0 kV, 100 percent impulse test Insulation resistance 2500 megohms for 1000 feet (min.) Polyimide cure test No cracking Shrinkage 0.062 inch (max.) at 180 C Surface resistance 5 me
13、gohms inches (min.), initial and final readings Thermal shock Oven temperature, 1502 C (3023.6 F) Maximum change in measurement 0.031 inch Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/21E 3 Wet dielectric test 2500 volts (root mean s
14、quare) INSPECTION: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) See tables I and II Voltage withstand (volts, root mean square, min.) Conductor to conductor 2000 Conductor to shield (FXOW only) 1000 Shield to shield Not applicable Insulation resistance (megohms/1000 feet, m
15、in.) Conductor to conductor 2500 Conductor to overall shield (Type FXOW only) 2500 Shield to shield (component shield only) Not applicable Shield to shield (component shield to overall shield) Not applicable Conductor and shield continuity Not applicable Jacket flaws (Type FXOW only) No failure Grou
16、p A: Visual and dimensional No failure Capacitance Mutual capacitance (at 1 MHz, picofarads/foot (pF/ft), max.) Not applicable Capacitance unbalance (percent, max.) Not applicable Characteristic impedance (at 1 MHz, ohms) Not applicable Watertightness No failure (see table IX of MIL-DTL-24640 for li
17、mits of water leakage) Weight No failureGroup B: Cold bending No failure Drip No failure Cross-link proof test (percent, max.) Jacket 50 Tear (lb/in thickness, min.) 35 Physicals (unaged) Jacket Tensile strength (lb/in2, min.) 1300 Provided by IHSNot for ResaleNo reproduction or networking permitted
18、 without license from IHS-,-,-MIL-DTL-24640/21E 4 Elongation (percent, min.) 160 Attenuation (at 3 MHz, dB/100 feet, max.) Not applicable Gas flame (1 hour) No failure Group C: Physicals (aged), air oven Jacket Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 Per
19、manence of printing 25 (conductor insulation, cycles, Method 1 only, min.) Permanence of printing (jacket, cycles, min.) 125 Heat distortion (percent of unaged, max.) 30 Cable sealant removability No failure Shrinkage No failureSurface transfer impedance (Type FXOW only) Milliohms per meter (max.) 7
20、00 EMP response (dB, min.) 60 Group D: Flame propagation No failure Qualification Inspection: Qualification inspection shall include basic electricals; groups A, B, C, and D; plus the following: Aging and compatibility (cable) No failure Acid gas equivalent (percent, max.) Jacket 2 Fillers 2 Insulat
21、ion 18Halogen content (percent, max.) Jacket 0.2 Fillers 0.2 Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24640/21E 5 Smoke index (max
22、.) Jacket 25 Fillers 45Insulation 10 Toxicity index (max.) Jacket 5 Fillers 5 Insulation 1.5 Durometer (jacket) - Type A (hardness, min.) 80 Weathering (jacket) No failure Fungus resistance No failure Abrasion resistance No failure Gas flame (3 hour) No failure Component wire No failure UNIT ORDERIN
23、G LENGTHS: Type and size Feet (nominal) FXW-3, FXW-4, FXW-3, FXW-4 500 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. Custodians: Preparing Activity:Army MI Navy SH Navy SH (Projec
24、t 6145-2009-096) Review Activities: Army AR, AV, CR, CR4 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 https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
