1、 INCH-POUND MIL-DTL-24643/63A 28 January 2010 SUPERSEDING 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 produc
2、t described herein shall consist of this specification 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.
3、 Using two conductors per phase reduces the series 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. Construction (Watertight with
4、 Circuit Integrity) First - Copper conductor, coated or uncoated (see table I for size). Second - Optional separator. Third - Extruded silicone rubber, or silicone rubber-glass tape insulation at the manufacturers option (see table I for diameter). Refer to table II for identification code. Fourth -
5、 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 may be employed to obtain a well-rounded assembly. Fifth - Optional binder. Sixth - Cr
6、oss-linked polyolefin jacket (see table I for thickness). AMSC N/A 6145 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/63A TABLE I. LSYSGU sizes and characteristics. Conductor Cable Amps per Phase (2 conductors) Military part no. M2464
7、3/63 AWG Circular MILS Stranding 40 C ambient 50 C ambient /1000 ft 25 C (max.) Jacket thickness (min.) Overall diameter (max.) Weight (lbs/ft) -01UN 16 2580 7 x 0.0192 18 16 4.300 0.040 0.535 0.188 -02UN 14 4110 7 x 0.0242 29 27 2.680 0.040 0.580 0.255 -03UN 12 6530 7 x 0.0305 39 36 1.900 0.040 0.6
8、40 0.314 -04UN 10 10380 7 x 0.0385 62 58 1.125 0.040 0.730 0.420 -05UN 8 16510 19 x 0.0295 84 77 0.790 0.050 1.000 0.725 -06UN 4 41740 19 x 0.0469 145 133 0.287 0.050 1.170 1.400 -07UN 2 66360 19 x 0.0591 193 178 0.203 0.060 1.310 2.000 -08UN 1 83690 37 x 0.0476 237 218 0.145 0.060 1.450 2.400 -09UN
9、 0 105600 61 x 0.0416 272 254 0.120 0.060 1.600 3.000 -10UN 00 133100 61 x 0.0467 320 294 0.0888 0.065 1.780 3.750 -11UN 000 167800 61 x 0.0524 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 Provided by
10、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/63A 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 Blac
11、k 5 B White 6 C Red 7 N Green 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/63A REQUIREMENTS: Qualification Required. INSPECTION: Basic Electricals: Conductor resistance (ohms/1000 feet at 25 C, max.) See table II Voltage withstand
12、root mean square, min.) Sizes 16 through 10 3000 VAC Sizes 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: Thermose
13、t proof test (percent, max.) Insulation 50 Jacket (when tested 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 s
14、trength (lb/in2, min.) 1300 Elongation (percent, min.) 160 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 4 Provided by IHSNot for ResaleNo reproduction or networking permitted wi
15、thout license from IHS-,-,-MIL-DTL-24643/63A Elongation (percent of unaged, min.) 60 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.
16、) 125 Group D: Flame propagation (cable) 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 fa
17、ilure Abrasion resistance (jacket) (scrapes, 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 Insulation 0.2Immersion (jacket) Tensile strength (percent of unaged, min.) 50 Elongation (p
18、ercent of unaged, min.) 50 Smoke index (max.) Jacket 25 Fillers 45Insulation 45 Toxicity index (max.) Jacket 5 Fillers 55 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24643/63A 6 Insulation 1.5 Durometer (jacket) Type A (hardness, min.) 80
19、 Weathering (jacket) No failure UNIT ORDERING LENGTHS: Type and size Feet (nominal) LSYSGU 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 M
20、I Navy SH Navy SH (Project 6145-2009-106) Review Activities: Army AR, AV, CR 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 http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
