1、 INCH-POUND MIL-DTL-24643/63 1 March 2007 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, 1000 VOLTS, TYPE LSYSGU 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 speci
2、fication sheet and MIL-DTL-24643. This cable type is specifically designed for single circuit (see Figure 1), three-phase, wye connected (with neutral wire), 60 or 400 Hertz, electrical power distribution. The designation Y represents the wye connection. Using two conductors per phase reduces the se
3、ries inductance to 50 percent of the single conductor per phase value. In addition, the symmetrical spacing of the phase conductors from the neutral wire provides for balanced voltage drop when three-phase loads are applied. REQUIREMENTS: Qualification Required. Construction (Watertight with Circuit
4、 Integrity)First - Copper conductor, uncoated (see Table I for size). Second - Separator may be used at the manufacturers option to ensure that the insulation is easily stripped off of the conductor. Third - Extruded silicone rubber, or silicone rubber-glass tape insulation at the manufacturers opti
5、on (see Table I for diameter). Refer to Table II for identification code. Fourth - Seven conductors cabled together with a left-hand lay of six conductors around the center conductor (see Figure 2 for cross-sectional view). The length of lay shall not exceed 24 times the pitch diameter. Fillers shal
6、l be employed to obtain a well-rounded assembly. Fifth - Optional binder tape applied helically with overlap. Sixth - Cross-linked polyolefin jacket (see Table I for thickness). AMSC N/A 6145 Source: http:/ - Downloaded: 2008-02-14T01:33ZCheck the source to verify that this is the current version be
7、fore use.MIL-DTL-24643/63 TABLE I. LSYSGU sizes and characteristics. Conductor Cable Amps per Phase(2 conductors) Military Part No. M24643/63 AWG Circular MILS Stranding Diameter Over Insulation (min.) 40 C ambient50 C ambient/1000 ft 25 C (max.) Jacket Thickness (min.) Overall Diameter (max.) Weigh
8、t (lbs/ft)-01UN 16 2580 7 X 0.0192 0.125 18 16 4.300 0.040 0.535 0.188 -02UN 14 4110 7 X 0.0242 0.140 29 27 2.680 0.040 0.580 0.255 -03UN 12 6530 7 X 0.0305 0.160 39 36 1.900 0.040 0.640 0.314 -04UN 10 10380 7 X 0.0385 0.187 62 58 1.125 0.040 0.730 0.420 -05UN 8 16510 19 X 0.0295 0.275 84 77 0.790 0
9、.050 1.000 0.725 -06UN 4 41740 19 X 0.0469 0.325 145 133 0.287 0.050 1.170 1.400 -07UN 2 66360 19 X 0.0591 0.365 193 178 0.203 0.060 1.310 2.000 -08UN 1 83690 37 X 0.0476 0.407 237 218 0.145 0.060 1.450 2.400 -09UN 0 105600 61 X 0.0416 0.453 272 254 0.120 0.060 1.600 3.000 -10UN 00 133100 61 X 0.046
10、7 0.510 320 294 0.0888 0.065 1.780 3.750 -11UN 000 167800 61 X 0.0524 0.560 376 346 0.0674 0.065 1.880 4.500 Note: All dimensions are in inches unless otherwise specified. FIGURE 1. LSYSGU single circuit user diagram. 2 Source: http:/ - Downloaded: 2008-02-14T01:33ZCheck the source to verify that th
11、is is the current version before use.MIL-DTL-24643/63 1 (A)6 (C)5 (B)4 (A)3 (C)2 (B)7 (N)FIGURE 2. LSYSGU cross-section design. TABLE II. LSYSGU identification code and color. Conductor # Identification Code Color 1 A Black 2 B White 3 C Red 4 A Black 5 B White 6 C Red 7 N Green 3 Source: http:/ - D
12、ownloaded: 2008-02-14T01:33ZCheck the source to verify that this is the current version before use.MIL-DTL-24643/63 EXAMINATION AND TESTS: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) see Table II Voltage withstand (root mean square, min.) Sizes 16 through 10 3000 VAC Sizes
13、 8 and larger 5000 VAC Insulation resistance (megohms/1000 feet, min.) 100 Conductor continuity No Failure Group A: Visual and dimensional No Failure Watertightness (see MIL-DTL-24643 for limits of water leakage) No Failure Group B: Cross-linked proof test (percent, max.) Insulation 50Jacket (when t
14、ested at 2005 C) 50 Tear (pounds per inch thickness, min.) (ASTM D470) 35 Gas flame (1 hour) No Failure Drip (951 C) Zero Physicals (unaged) Insulation Tensile strength (lb/in2, min.) 700 Elongation (percent, min.) 250 Jacket (cable) Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 16
15、0 Cold bending cable (mandrel is 12 times the outer diameter) No Damage Group C: Physicals (aged) Jacket (cable) Air oven Tensile strength (percent of unaged, min.) 60 Elongation (percent of unaged, min.) 60 4 Source: http:/ - Downloaded: 2008-02-14T01:33ZCheck the source to verify that this is the
16、current version before use.MIL-DTL-24643/63 Hot oil immersion Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Shrinkage No Failure Heat distortion (percent of unaged, max.) 30 Permanence of printing (jacket) (cycles, min.) 125 Group D: Flame propagation (cable)
17、No Failure Qualification Inspection: Qualification inspection shall include basic electricals, groups A, B, C, and D, plus the following: Accelerated service (1.8 times the amps per phase 50 C ambient) No Failure Aging and compatibility (cable) (1255 C) No Failure Abrasion resistance (jacket) (scrap
18、es, min.) 75 Acid gas equivalent (percent, max.) Jacket 2 Fillers 2 Insulation 18Gas flame (3 hours) No Failure Halogen content (percent, max.) Jacket 0.2 Fillers 0.2 Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (percent of unaged, min.) 50 Smoke index, max. Jacket 25
19、Fillers 45Insulation 45 Toxicity index, max. Jacket 5 Fillers 5Insulation 1.5Durometer (jacket) Type A (hardness, min.) 80 5 Source: http:/ - Downloaded: 2008-02-14T01:33ZCheck the source to verify that this is the current version before use.MIL-DTL-24643/63 Weathering (jacket) No Failure UNIT ORDER
20、ING LENGTHS: 500 feet min. Custodians: Preparing Activity: Army MI Navy SH Navy SH (Project 6145-2006-067) Review Activities: Army AR, AV, CR Navy CG, EC DLA IS 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 http:/assist.daps.dla.mil. 6 Source: http:/ - Downloaded: 2008-02-14T01:33ZCheck the source to verify that this is the current version before use.
