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MIL-DTL-24640.1D-2002.pdf

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    MIL DTL 24640.1 2002
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    INCH-POUND MIL-DTL-24640/1D 22 August 2002 SUPERSEDING MIL-C-24640/1C 26 June 1995 DETAIL SPECIFICATION SHEET CABLE, ELECTRIC, 600 VOLTS, LIGHT-WEIGHT, TWO-CONDUCTOR, LOW POWER, TYPE DX This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and the issue of MIL-DTL-24640 listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation. Construction (Non-Watertight) First - 9-strand, tin-coated copper conductor, and AWG size and dimensions in accordance with Table I. Second - Component wires shall be MIL-W-81044/12, except identification shall be in accordance with the codes and methods of MIL-DTL-24640. Testing shall be done in accordance with the component wire ratings and requirements listed on this slash sheet. Quality conformance testing shall be in accordance with MIL-W-81044, prior to cabling. Identification codes applied using Method 1 or 3. If Method 1 is used, component wire shall be white. Third - Two component wires cabled together. Fourth - Binder tape applied helically with overlap, at manufacturers option. Fifth - Crosslinked polyolefin jacket. (See Table I for thickness). AMSC N/A 1 of 5 FSC 6145 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Source: http:/ - Downloaded: 2008-11-03T02:40Z Check the source to verify that this is the current version before use. MIL-DTL-24640/1D TABLE I. Construction details PIN M24640/1 Type Number AWG size Conductor diameter (inch) (nominal) Component Wire Diameter (inch) (min) (max) Jacket thickness (inch) (minimum) Cable diameter (inch) (min) (max) Cable weight (pounds per 1000 feet) (max) Conductor resistance per 1000 feet (ohms) -01UN -02UN DX-3 DX-4 16 14 0.056 .071 0.069 .085 0.075 .093 0.031 .034 0.223 .266 0.241 .286 39.4 56.8 4.98 3.18 REQUIREMENTS: Qualification required. Construction details: See Table I Component wire: The component wire shall be per MIL-W-81044 and shall be tested in accordance with the following wire ratings and additional requirements. Temperature rating: 150oC (302oF) maximum conductor temperature Voltage rating: 600 volts (rms) at sea level. Accelerated aging: Oven temperature, 300 + 2oC (572 + 3.6oF) for 6 hours. Blocking: 150 + 2oC (302 + 3.6oF) Flammability: 30 seconds (max); 3.0 inches (max); No flaming of tissue paper. Humidity resistance: 5000 megohms for 1000 feet, minimum insulation resistance after humidity exposure. Impulse dielectric test: Primary insulation (when tested in lieu of spark test): 6.0 kilovolts (peak) 100 percent test. Component wire: 8.0 kilovolts (peak), or 3 kHz spark test 5.5 kV, 100 percent test. Insulation resistance: 5000 megohms for 1000 feet (min). Life cycle: Oven temperature, 200 + 2oC (392 + 3.6oF) for 168 hours. Physical properties of primary insulation: Tensile strength, 2500 lb/in 2 (min). Elongation, 150 percent (min). Shrinkage: 0.125 inch maximum at 300 + 2oC (572 + 3.6oF). Spark test primary insulation: 1500 volts (rms), 60 Hz or 3 kHz, 100 percent test. Surface resistance: 500 megohms inches (min), initial and final readings. Thermal shock: Oven temperature, 150 + 2oC (302 + 3.6oF). Maximum change in measurement: 0.060 inch. Wet dielectric test: 2500 volts (rms). Wrap test: Mandrel wrap test required. 2 Source: http:/ - Downloaded: 2008-11-03T02:40Z Check the source to verify that this is the current version before use. MIL-DTL-24640/1D EXAMINATION AND TESTS: Basic electrical Requirements Conductor Resistance - ohms/1000 feet at 25oC, maximum.See Table I Voltage withstand - volts, root mean square, minimum Conductor to conductor .2000 Conductor to shield.Not applicable Shield to shield.Not applicable Insulation resistance megohms-1000 feet, minimum.2500 Conductor continuity .No failure Jacket flaws.Not applicable Group A: Visual and dimensional.No failure Capacitance: Mutual capacitance - at 1 MHz, picofarads/foot (pF/ft), maximum .Not applicable Capacitance unbalance - percent, maximum .Not applicable Characteristic impedance - at 1 MHz, ohms .Not applicable Watertightness (see Table IX of MIL-DTL-24640 for limits of water leakage).Not applicable Weight.No failure Group B: Cold bending.No failure Drip.Not applicable Cross link proof test (percent maximum) Jacket .50 Drip.Not applicable Tear - pounds per inch thickness, minimum.35 Physicals (unaged) Jacket Tensile strength - lb/in 2, minimum.1300 Elongation - percent, minimum.160 Attenuation - at 3 MHz, dB/100 feet, maximum.Not applicable Gas flame (1 hour).Not applicable Group C: Physicals (aged) Jacket Air oven Tensile strength - percent of unaged, minimum.60 Elongation - percent of unaged, minimum.60 3 Source: http:/ - Downloaded: 2008-11-03T02:40Z Check the source to verify that this is the current version before use. MIL-DTL-24640/1D Permanence of printing (conductor) - cycles, method 1
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