1、f INCH-POUND Ia71 CABLES ANDMIL-C-24643A14 March 1994SUPERSEDINGMIL-C-246433 October 1986MILITARY SPECIFICATIONCORDS, ELECTRIC, LOW SMOKE, FOR SHIPBOARD USEGENERAL SPECIFICATION FORThis specification is approved for use by all Departments and Agencies of theDepartment of Defense.1. SCOPEa71 1.1 %X?X
2、2Q. This specification covers low smoke electric cable and cord forNavy shipboard applications.1.2 asslflcatio., Cables and cords covered by this specification shall beclassified as watertight, watertight (with circuit integrity) , and non-watertightconstructions, armored and unarmored, and further
3、classified for flexing andnonflexing service for power, lighting, control, communications, instrumentation andelectronic applications, as specified in 1.2.1 through 1.2.4 (see 6.2.1) . A partnumber for cable and cord shall be as specified in 6.7 and the applicablespecification sheet.1.2.1 Watertiq&
4、( xth circuit mtea ltv), no&lexlna service Cable and cordtypes for watertight, (ith circuit integity), nonflexing service as follows:Power and lighting:mored ored w-Type - - LSDPS TWO conductors 600 volts (V)LSDSGU - LSDSGA Two conductors 1000 v- - LSFPS Four conductors 600 VLSFSGU - LSFSGA Four con
5、ductors 1000 vBeneficial comments, (recommendations, additions, deletions) and any pertinent datawhich may be of use in improving this document should be addressed to the Commander,SEA 05Q42, Naval Sea Systems Command, 2531 National Center Bldg. 3, Washington, DC20362-5160, by using the self-address
6、ed Standardization Document Improvement Proposal(DD Form 1426) appearing at the end of this document or letter. IAMSC N/A FSC 6145Approved for public release; distribution is unlimited.ML-C-24643Apower and lighting continued:rmored withoverall ShieldLSSSGLT - -LSTSGU -LS6SGU - -LS7SGU -Control:Ynar
7、-edm Ynarmred withfwerall shieldme LSMSCU LSMSCS1/ISSSGA Single conductorsLSTPS Three conductorsLSTSGA Three conductorsLS6SGA Six conductorsLS7PS Seven conductorsLS7GA Seven conductorsArmoredLSMSCA Seven through 913000 v600 V1000 v1000 v600 V1000 v1000 vconductorsElectronic, communication and instru
8、mentation:Unarmored Armored9V rType - - LSTCKX One, 3, 7 and 12 pairsLSTCTU - LSTCTA One pair- -LSTCTX Three, 7 and 12 pairsLSTI%U - LSTTSA 1-1/2 through 6 pairs 300 vl/Double overall shield.a71 1.2.2 Watertight. Cable and cord types for watertight,nonflexing service are as follows:Power, lighting a
9、nd special purpose:Ynarmw2f2 Armoredgverall SwType LSMDU - LSMDY Nineteen conductorsLSSRW - LSSRWA Single conductorLSTRW - LSTRWA Three conductors600 V3000 v3000 vMU-C-24643AElectronic, communication and instrumentation:pnarmored withpverall shieldType LSDRW -LSECM -LSPBT?4U -LSTCJU - -LS1SMWU -LSIS
10、WU -LS2SWAU -LS2SWU - LS2WAULS3SWU LS3SWUS1/LS2SWL-7 - LS2UW-42l/Double overall shield.2/With overall shield.3000 v600 VLSDRWA TWO conductorLSEUUIA 56 single conductorsLSPBI?4 Five, 15 and 30 pairsLSTCJA One pairLSTCJX Three, 7 and 12 pairsLSISMWA 70 Shielded pairsLSISWA TWO, 14, 20 and 30 shieldeds
11、inglesLS2SWA Three through 61 shielded pairsLS2SWUA One through 61 shielded pairsLS2WA2/ 40 pairs with overall shield 600 VLS3SWA Three through 44 shield triadsLS2SWLA-7 Seven shielded pairsLS2UWA-422/ 42 pairs with overall shield1.2.3 lx v“ . Cable and cord types for non-Watertight, nonflexing serv
12、ice are aW fOllOW:Power and lighting:IJnaroredmType LSDNW -LSFNW -LSTNW -LS2SJControl:red WLQ39verType LSMNW - LSMSLSMU LSMUS a71LS4NW1/ -LSBNW6 -I/Double overall shield.2/With overall shield.LSDNWA Two conductorsLSFNWA Four conductorsLSTNWA Three conductorsLSA2/TW0 conductors withoverall shieldLSMN
13、WA Seven through 44conductorsLSMSA2/ 37 conductors withoverall shieldLMSA 14 conductorsLS4NWA8 Four conductorsLS8NWA6 Eight conductors1000 v1000 v1000 v600 V1000 v300 v300 v MIL-C-24643AElectronic, communication and instrumentation:lype LSMRI-LSTPNWLSISAULSISMULSISULS1S50MULS1S75MULS2SU-LS3SULS3U-gv
14、era11 shield- LSPI- LSTPNWA- LS1SA- LSISMA- LSISUALSlS50MUS1/ LS1S50MA-LS2AULs2Ausl/LS2SUS1/LS2ULS3SJLS3SUS1/-LS4SJLS2CS2/LS1S75MALs2A2/LS2SALS2UALS2JA2iLS3SALS3UALs4sJA2/-Twisted pair and triadThree, 7 and 12 shieldpairs1-1/2 through 40 pairs44 shielded shinglesFive shielded singles36 and 60 shield
15、ed singles16, 20, 40 and 70 shieldedsinglesEight shielded singles40 pairs with overallshieldThree through 61 shieldedpairs10 through 60 pairs withoverall shieldThree conductors withoverall shieldThree through 44 shieldedtriadsThree, 7 and 12 triadsFour conductors with 600 Voverall shieldSix, 18, 42,
16、 60 and 77pairs with double overallshieldl/Double overall shield.2/With overall shield.1.2.4 Non-watertight flexinu si=rvice.watertight flexing service are as follows:Power and lighting:marmored !Jnarmred withgvera11shimType LSCVSF -LSDHOF -LSFHOF -LSSHOF -LSSRW -LSSSF -LSTHOF -mrpd-LSSWRA-Cable and
17、 cord types for non-Four conductors (3 #3and 1 #5 AWG)Two conductorsFour conductors (2-6 AWG)Single conductor( 3 through 800 AWG)Single conductorSingle conductorThree conductors( 3 through 600 AWG)4300 v600 V300 v600 V600 V600 V600 V600 V3000 v600 V600 v MIL-C-24643AControl:Ynarm=esl Pn-=ed withgnre
18、rall shieldType LSMHC)F - - Seven through 61conductorsElectronic, communication and instrumentation:Ynar -=3m Ynarmo edr with moredgverall shieldTj?pe LSDCOP - - Two conductorsLSMCOS - - Multi conductors ShieldedLSMMOP - - Five conductorsLSTCOP - - Three conductorsLSTTOP - - Three through fifteenpai
19、rsLSTTRS - LS?TRSA Two through 16 shieldedpairsLS3SF - - Seven shielded triads600 V300 v600 V300 v300 v300 v300 v600 V2. APPLICABLE DOCUMENTS2.1 Government Documents* 2.1.1 SDeclflrations ,. The following specifications, andstandards form a part of this document to the extent specified herein. Unles
20、sotherwise specified, the issues of these documents are those listed in the issue ofthe Department of Defense Index of Specifications and Standards (DoDISS) andsupplement thereto, cited in the solicitation (see 6.2).SPECIFICATIONSFEDEW4LTT-I-735 Isopropyl AlcoholPPP-V-205 Veneer, Paper Overlaid, Con
21、tainer GradeMILITARYMIL-C-572MIL-Y-1140MIL-C-2194MIL-H-5606MIL-T-5624MIL-C-12000MIL-F-16884MIL-L-17331MIL-H-17672Cords, Yarns and Monofilament OrganicSymthetic Fiber.Yarn, Cord, Sleeving, Cloth and Tape-GlassCable, Power and Electrical, Reduced DiameterTypes .Hydraulic Fluid, Petroleum Base; Aircraf
22、t,Missile, and Ordnance.Turbine Fuel, Aviation, grades JP-4 and JP-5.Cable, Cord, and Wire, Electric, Packaging of.Fuel, Naval Distillate.Lubricating Oil, Steam Turbine and Gear,Moderate Semite.Hydraulic Fluid, Petroleum, Inhibited.5 MIL-C-24643ASPECIFICATIONS (continued)MILITARYMIL-L-23699MIL-S-242
23、35MIL-S-24235/lMIL-S-24235/2MIL-C-B5485(See supplement 1 for list ofSTANDARDSFEDERALDOD-STD-2003FED-STD-22BMILITARYMIL-STD-129MIL-STD-454Lubricating Oil, Aircraft Turbine Engine,Synthetic Base.Stuffing Tubes, Metal, and Packing Assembliesfor Electrical cables, General Specificationfor.Stuffing Tube,
24、 Bulkhead, Pressureproof.Packing Assemblies for Pressureproof BulkheadStuffing Tubes.Cable, Electric, Filter Line, Radio FrequencyAbsorptive .applicable specification sheets.)Electric Plantfor (EPISM).Installation; Standard MethodsCable and Wire, Insulated; Methods of Testing.Marking for Shipment an
25、d Storage.Standard General Requirements for ElectronicEquipment.(Unless otherwise indicated, copies of federal and military specifications,and standards are available from the DODSSP - Customer Service, StandardizationDocument Order Desk, 700 Robbins Avenue, Bldg. 4D, Philadelphia, PA 19111-5094) .2
26、.2 The following documents form a part of this documentto the extent specified herein. Unless otherwise specified, the issues of thedocuments which are DoD adopted are those listed in the issue of the DODISS cited inthe solicitation. Unless otherwise specified, the issues of documents not listed int
27、he DODISS are the issues of the documents cited inASTMB3 Soft or Annealed Copper Wire.B8 Concentric-Lay-Stranded CopperHard or Soft. (DoD adopted)B 33 Tinned Soft or Annealed CopperPurposes. (DoD adopted)the solicitation (see 6.2).(DoD adopted)Conductor, Hard, MediumWire for ElectricalB 172 Rope-Lay
28、-Stranded Copper Conductors HavingBunch-Stranded Members, for Electrical Conductors.(DoD adopted)B 173 Rope-Lay-Stranded Copper Conductors HavingConcentric-Stranded Members, for ElectricalConductors . (DoD adopted) MIL-C-24643AASTM (continued)B 174 Bunch-Stranded Copper Conductors for ElectricalCond
29、uctors. (DoD adopted)B 1E!9 Lead coated and Lead Alloy Coated Soft Copper Wire forElectrical purposes. (DoD adopted)B 193 Resistivity of Electrical Conductor Materials. (DoDadopted)B 228 Concentric-Lay-Stranded Copper Clad Steel Conductors.(DoD adopted)B 258 Standard Nominal Diameters and Cross-Sect
30、ional Areas ofAWG Sizes of Solid Round Wires Used as ElectricalConductors. (DoD adopted)B 286 Copper Conductors for Use in Hookup wire for ElectronicEquipment. (DoD adopted)B 355 Nickel Coated Soft or Annealed Copper Wire. (DoDadopted)D 297 Rubber Products-Chemical Analysis. (DoD adopted)D 470 Stand
31、ard Methods of Testing Crosslinked Insulation andJackets for Wire and Cable.D 1248 Standard Specification for Polyethylene PlasticsMolding and Extrusion Materials.D 145B Standard Methods of Testing Fully Cured Silicone RubberCoated Glass Fabric and Tapes for ElectricalInsulation.D 2240 Rubber Proper
32、ty Durometer hardness. (DoD adopted)D 2565 Standard Practice for Operating Xenon tic Type (WaterCooled) Light-Exposure Apparatus Wire and WithoutWater for Exposure of Plastics.(Application for copies should be addressed to ASTM, 1916 Race Street,Philadelphia, PA 19103.)AMERICAN NATIONAL STANDARDS IN
33、STITUTE, INC. (ANSI)B46.1 Surface texture, Surface Roughness, Waviness and Lay.(DoD adopted)MC96.1 Temperature Measurement Thermocouples. (DoD adopted)(Application for copies should be addressed to American National StandardsInstitute, Inc. 1430 Broadway, New York, NY 10018.)INSTITUTE OF ELECTRICAL
34、AND ELECTRONIC ENGINEERS (IEEE)303 IEEE STD for Type Test of Class IE Electric Cables,Field Splices and Connections for Nuclear PowerGenerating Stations.(Application for copies should be addressed to the Institute of Electrical andElectronic Engineers, Inc., 345 East 47th Street New York, NY 10017)I
35、nsulated Cable Engineers Association (ICEA)T-28-562 Test Method for Measurement of Hot Creep of PolymericInsulations.(Application for copies should be addressed to the Insulated EngineersAssociation, PO Box 440, South Yarmouth MA 02664)7 MIL-C-24643ANATIONAL ELECTRICAL MANUFACTURES ASSOCIATION (NEMA
36、)WC-61 Surface Transfer Impedance(Application for copies should be addressed to the National ElectricalManufacturers Association, Suite 300, 2101 L Street, N.W. Washington,DC 20037)NAVAL ENGINEERING STANDARDS (NES)711 Determination of the Smoke Index of the Products ofCombustion from Small Specimens
37、 of Materials, Issue 2 (1/81).713 Determination of the Toxicity Index of the Products ofCombustion from Small Specimens of Material, Issue 3 (3/85).(Copies of Naval Engineering Standards are sponsored by the ProcurementExecutive, Ministry of Defense, Ship Department, Section TE112, Block G, Foxhill,
38、Bath 5AB England.)(Non-Government standards and other publications are normally available fromthe organizations that prepare or distribute the documents. These documents alsomay be available in or through libraries or other informational services. )2.3 In the event of a conflict between the text of
39、thisdocument and the references cited herein (except for related associated detailspecifications, specification sheets, or MS standards) , the text of this documentwill take precedence. Nothing in this document, however, supersedes applicable lawsand regulations unless a specific exemption has been
40、obtained.3. REQUIREMENTS3.1 The individual item requirements shall be asspecified herein and in accordance with the applicable specification sheet. In theevent of a conflict between the requirements of this specification and thespecification sheet, the latter shall govern.3.2 Pualificati= Cables and
41、 cords furnished under this specificationshall be products which are authorized by the qualifying activity for listing on theapplicable qualified products list at the time of award of contract (see 4.3 and6.4).3.3 Materials. Materials used in construction of those cables or cordsrequiring qualificat
42、ion shall have the written approval of NAVSEA. In the case ofcables or cords not requiring qualification, NAVSEA approval will not be required,and materials in these cables shall be in accordance with the requirements shown inthe applicable specification sheets.3.3.1 Conductors,3.3.1.1 -DDer c&ctors
43、 . Copper conductors shall be composed of soft orannealed copper strands in accordance with ASl?4B 3.3.3.1.2 Uah strwcath conductors. Unless otherwise specified on thespecification sheet, high strength conductors shall be composed of 30 percentconductivity, high strength, copper-covered steel strand
44、s in accordance with ASTMB228.8 / ,.MIL-C-24643A3.3.1.3 an corma. Tin coating shall be in accordance withASIY4B 33.3.3.1.4 head or lelov COFinL Lead or lead alloy coating shall be inaccordance with ASTM B 189.3.3.1.5 Nickel coatinq. Nickel coating shall be in accordance with class 2 ofASl?4B 355.3.3
45、.1.6 TheOCOUDle wire , Conductors for thermocouple cables shall be inaccordance with ANSI MC96.1.3.3.2 =ula-. Insulation shall be as specified on the applicablespecification sheet, except silicone rubber coated glass fabric tape insulationshall be as specified in 3.3.2.1.3.3.2.1 Silimne rer row alas
46、s fabr taD& The silicone rubber coatedglass fabric tape insulation shall, before application to a conductor, have adielectric strength of not less than 475 V per mil for tapes which are less than 8.8roilsthick, and 575 V per mil for tapes which are 8.9 roilsor more in thickness.These dielectric stre
47、ngth values shall be met after the tapes have been conditionedfor 24 hours at 23 degreesCelsius (“C) and 96 percent relative humidity and tested while maintainingtemperature and humidity conditions in accordance with the short time dielectricbreakdown test in accordance with AS D 1458. Extruded sili
48、cone rubber insulationshall have a specific gravity of not more than 1.55. Other physical and electricalproperties shall be as specified in the specification sheets.3.3.3 Jackets. The material used for jackets over insulated conductor andgroups of insulated conductors, and for the cable or cord jacket, shall have thephysical and electrical properties as required by the applicable specification sheetand as specified herein. Unless otherwise specified in the applicable specificationsheet, the color of the cable or cord jacket shall be black.3.3.4 . The materials
