NAVY MIL-PRF-21402 A-1967 CABLE ASSEMBLIES NON-MAGNETIC (ORDNANCE)《无磁性缆索组件(军用器材)》.pdf

1、NOTE: The documeotidentifier and heading has km changed onthis pageWreflsctthatthisis 8porfbrmmcespecification. There a71no other changes to this document. Tlte document on subsequentpages has not W changed,but will be chsnged the next time thisdocument is revised.MIL-PRF-2M02A(OS)7SUPERSEDINGMIL-C-

2、21402(NOrd)28May 1958PERFORMANCESPECIFICATIONCABLESASSEMBLIES,NON-MAGNETIC(ORDNANCE)This specificationhas beenapprovedby the NavalOrdnanceSystemsCommand,Departmentofthe Navy.1. SCOPE1.1 x, - This specificationcoversthe requirementsfor the procurementof CableAssembliesNon-Magnetictype. The CableAssem

3、bliesare for use in or testingof weaponsand weaponcomponents.2. APPLICABLEDOCUMENTS2.1 I%efbllowingspecifications,standards,dmwingsandpublicationsor suchportionsthereofasdesignatedhereinoftheissueineffectonthedateofinvitationforbidsftxtna part ofthisdocument.SPECIFICATIONSMILITARYMIL-C-5015STANDARDS

4、MIL!TARYMIL-STD-129MIL-STD-202MIL-STD-331DRAWINGSNAVALORDNANCELD No.284865Connectors,Electric, “AN”TYPEMarking for Shipmentand StorageTest Methodsfor 13ectronicand ElectricComponentPartsFuzeand Fuzecomponents,Environmentaland PerformanceTest forSYSTEMSCOMMANDPreparationfor Deliveryof CableAssemblies

5、. .FSC 1075-.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-21402A(OS) -.LD No, 284866 Preparation forl)elivery of TestSet Cable AssembliesPIBIJCATIONSNAVALORDNANCESYSIEMSCOMMANDOD 10511 Basic methods for non-magnetictesting with the Test Set

6、Mark 11type(Copies of specifications, standards, drawings and publica-tions required by a contractor in connection with specificprocurement functions should be obtained from the procuringagency or as directed by the contracting officer.)3. REQUIREMENTS3.1 - The cabIe assembliescovered by this specif

7、icatin consist of insulatedelectrical conductors grouped together in cables, unterminatedor terminated with AN connectors or other termination asspecified in the applicable drawings. TheY are of the typein which only Iimi ted magnetic properties are permittedand are used to interconnect various comp

8、onents of weapons,and for use with calibrators, test equipment, etc.3.2.1 - A preproductionsample of the cable assembly shall b; manufactured usingthe methods and procedures proposed for the productionlot. The preproduction sample shall be repared fordelivery in accordance with Section 5. Fhis saapl

9、e willbe inspected as specified in Section 4 herein and is forthe purpose of detershiYthat the production meets therequirements of this spec fication and the design- Provisionof the sample shall be in accordance with 4,3.1.2.-Provided by IHSNot for ResaleNo reproduction or networking permitted witho

10、ut license from IHS-,-,-.-, MIL-C-21402A(OS)3.2,2 - The cable assembly shall bemanufactured in ith the particular LD pertain-ing thereto, all documents listed therein and as specifiedherein.Inspection and acceptance shall cation and anyother specification, drawing, or pu lication listed hereinshall

11、be referred to the procuring agency or ap ointed agentin writing for interpretation, clarification a4 resolution.3.2.4 Datract, order, or applicabledrawings shall withstand the pressure test as specifiedin 4.6. S and thereafter shallshuwno dmage and shallmeet all the performance and product requirem

12、entsof this specification4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-21402 A(OS)3.5 CJdWD=Wo- Prior to and after finalassembly, all parts, components and the assembly shallbe thoroughly cleaned of loose spattered or excesssolder, metal chi

13、ps and other foreign matter. Burrs andsharp edges as well as rosin flash shall be removed-3.6 - The equipment, including allparts and accessories,i be constructed and finishedin a manner to assure compliance with all requirements ofthis specification.Particular attention shall be paidto neatness and

14、 thoroughness of soldering, plating, crimp-ing, marking of parts and assemblies and freedom ofparts from burrs and sharp ed es.!Te orderthe supplier is responsible for the performance of aliinspection requirements as specified herein. Except asotherwise specified, the s plier maY utilize his ownTfac

15、ilities or any commerdia laboratory acce table to theGovernment. tThe Government reserves the rig t to performany of the inspections set forth in the specificationwhere such inspections are deeaed necessary to assuresupplies and services conform to prescribed requirements.4.2 - Inspectionof the item

16、s cov 11 be, classifiedas follows:a. preproduction inspection (See 4.5 and 4.0b. Quality conformance inspection (See 4.5)c. Periodic production inspection (See 4.6)5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-21402A(OS)4.3.1 - A preproducti

17、onsa Ie of (10) Cable Assemblies, manufactured in accordance%wit 3,2.1 shall be subjected to the examinations andtests deta!led in 4.5 and 4.6 at an activity designatedby the procuring activity.Acceptance of the sample shallbe based on no defects in this sample.of the Cable Assembly by the suppliero

18、f the sample, shall be at the supplier s risk.$ $%:h: :;:;on4.3.2.1 . - Each unit shallbe subjected to.1 and tests in4.5.2.y nit Con%ining ne !lr “r! efects ha” because for regar ing t e unit as efect ve.4.3.3 - - After successfulcompletion of the uality conformance i4. 1), measure the resistance be

19、tween all points -desi ned to be- electrically connected, as shown on -fappl cable drawings, In each case the resistance shall be0.2ohms or less. Remove test equipment.4. S.2.3 nn r - Acceptance of thecable meeti iation resistance value may be madeunder any conditions of exposure ti, humidity and te

20、mperaturegreater than the standard values below, but rejection of anycable failing to meet its insulation resistance value shallonly be made when tested after conditioning the cable for24 hours at a re Iative humidity of 75 k S% and a temperatureof 75 * 5 degrees F. WIY the megolumeter specified in4

21、.4.2, measure the iwulat on resistance of each circuit andeach unused pin of the Cable Assembly, with respect to allother nonconnected circuits and each unused pin shortedtogether, to the connector housings and ground. Theinsulation resistance, measured at a test potential of500 volts dc, ap lied fo

22、r 0.1 second or more for each testpoint, shall be O me ohms or more, unless otherwisefspecified on applicab e drawings.4.5.2.4 v- - This 4test shall be re uiredonly when specified in ;he contract,%order or applica Ie drawings.The Cable Assemblies shallhe subjected to the clie Iectricwithstanding vol

23、ts e testfof MIL-STD-202, Method 301. The test voltage sha 1 beapplied between each condwtor circuit and eachunused pinand all other nonconnected conductors, circuits and unusedFins connected to ether and to c.omnector housings and ground.!he Cable Assembl es shall be imersed in a water bath withter

24、minations above water, in such a manner that only the outersheath is submerged.The water bath shall constitute theground e Xectrode.In the case of Cable Assemblies containione or more shields, the shields shall be connected to grou 3while the insulated conductors and unused pins are beingtested and

25、then the insulated conductors and unused pinsshall be connected to tbr W to th selds and otemtialr Iap lied between the s ields and round or water bat .L JUilessot mise s ecified Cable Asse Iies.rated at 500 volts oxless shall L tested at 2000 voIts rms, 60 cycles ac, appliedfor not less than fiftea

26、n (M) seconds. Unless otherwisespecified, Cable Assemblies rated at ever SW volts shallbe tested at 60 cycles ec at a peak voltage equal to two (2)times the peak value of the rated volt e, plus 1000 volts,3!applied for not less than fifteen seco s. For dielectricwithstanding voltage tests conducted

27、folIowing testsperformed on preproduct ion and Y riodic production samples,the test potential shall be app ied for not less than - dProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-eL.MIL-C-21402A(OS)sixty (60) seconds. Followi T dielectric withstandi

28、ngvoltage test, the Cable Assem lies shall pass the insula-tion resistance test specified in 4.5.2.3. Remove testequipment4.5.2.54.5.2.5.1 After assembly, connectors of CableAssemblies shaIl be examined for bent ins crackedinsulating inserts,Besolder flash or ot r emage. Theconnector shall be e aged

29、 fully with a correspondingYmating connector (inc uding the tightening of the cduplingring) and then disengaged, The connector shall engageand disengage freely, by hand, without the use of tools.4.5.2.5.2 Connectors having socket type contacts shallbe tested for contact engaging and se arating force

30、s. Foreach socket of the connector, tusing t e e uipment specified?in 4.4.4, gradually increasing loads shal be appliedaxially to a pin of corresponding size until the in contactengages with or separates from the socket. !_ eDept ofengagement shall conform to that encountered in service.Dimensions o

31、f test pins for corre .onding socket contacts3shall be in accordance with MIL-C- 015 or ap IlcableLdrawings, The average force required to e it r engageor separate pins and sockets as measwed for a representa-t ive sample of Cable Assemblies shall not exceed theaverage value indicated in Table L iXW

32、ty-SiX (96)percent of all force values obtained shall not exceed themaximum force indicated in the table,. and none of thevalues shall be less than the minimum force specified.rABLEIContact engaging and separating forces* See MIL-C-5015 or applicable drawings.oProvided by IHSNot for ResaleNo reprodu

33、ction or networking permitted without license from IHS-,-,- .MIL-C-21402A(OS)4.5.2.6 - For this testthe Cable Asseui disc shapewith a diameteras small as possible, in any case notto exceed eight (8) inches,and with the connectors andother terminations in the center, Thecoiled cableshall be taped wit

34、h non-magnetic tape to prevent movementwithin the coil. The side of the disc containing thegreatest area of connectorsurfaces shall be selected asthe test face for all tests. The tests shall be conductedin accordance with 01) 10511, Method I, with a testdistance of 2-2 inches between the test face a

35、nd themagnetometer center.In orientation C of Method I, thedisc shall be rotated 360 degrees about its test axis ata uniform rate with the co lete rotation occurringbetween 4 and iO seconds.T e maximumchange in flux$n:;aproduced in any of the tests shall be 0.1 mill igau4.6 .4.6.1 U erature andhumid

36、ity 14 day cycle in accordance withB L-SID-331 Test No 105. Following this test the Cable Assembly shall beexamined for corrosion or damage which would i air itsoperation, Tand the Cable Assembly shall meet al theperformance and other requirementsof this spec if ication4.6.5 . - Cable Assemblies req

37、uired tobe submersible In the contract, order or applicable drawingsshall be pressure tested as re uired by 3.4.5. At thefconclusionof the test the cab e assembly shall meetall the performance and other requirements specifiedin this specification.4.6.5.1 A suitable pressure chamber shall beprovided,

38、 des Qned to withstand safely the specifiedtest pressure. The chamber shall be of sufficient siseto contain one or more cable assemblies in -h mannerthat the entire cable assemblies,or such portions thereof -as are designed to be submerged and e osed to water,a75ay?be Wholly sabmer 8 u3rder pressure

39、 tit In the ehamberCrThe chamber shal contain suitable connectors, stf f ingteS; glands Or other means of passing the cables orfltti s thereof through the chamber walls to simulateYinstal at ion of the cable assemblies in actual use, and*located so as to permit visual inspection to determinewater le

40、akage, and to permit making electrical test connec-tions to each circuit of the cable connectors.11. . _. .Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-21402A(OS)4.6.5.2 The cable assemblies, mounted in thetest chamber, shall be submerged in

41、 freshwater for thepressure and time specified in the contract, order orapplicable drawings. The water used in the chamber shallbe maintained above room temperature to prevent moisturecondensation on the chamber exterior or in the fittingsof the cable assemblies under test-4.6.5.3 After application

42、of pressure for thespecified period of time and with the pressure stillapplied, examine all cabie assembly conductor terminations,stuffing tubes, glands or other fittings for seepageof water, and then measure insulation resistance inaccordance with 4,5.2.3.4.6.5.4 Any evidence of seepage of water du

43、ri Tthe test, or decrease in insulation. resistance below t evalues s ecified in 4.5.2.3 when measured under pressure(4.6. 5.3 shall constitute failure to pass the pressuretest.5. PREPARATIONPORDELIVERY -b. When preproduction samples am waived because ofhaving been submitted on a recent contract, th

44、e standardsof workmanship exhibited by the previously submittedpreproduct ion sample shall determine the dnimum requirementsof the current contract relative to workmanship.c. If the contract establishes periodic productionsample sizes at variance with this specification theicontract shall also furni

45、sh a new test plan, or n so=manner designate the desired level and sequence of testingfor each of the sample units.13-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.-MIL-C-21402A(OS) .“4d. Title, nnber and date of this specification.Include the fol

46、lowin only when the individual -fcom;nent is shipped direct y to the Government or furnishedas a replacementEart.This need not a ply when the!component is pure ased as part of a ful y or partiallyassembled mine.(1) Packaging level “A”(2) Special markings, if required.f. When Cable Assemblies are pur

47、chased from a prm$contractor for installation into Assembly Condition Dmine, pre aration for delivery shall be adequate to2protect t e unit prior to installation.If one months scheduled production is not anacctaile lot size then lot size should be secifiedby the contract. 1 this occurs, the sample s

48、izes of4.3.3 shaIl be modified accordingly.h. Special test e uipment to be loaned by the Governmentiand the conditions un er which it is loaned. i6.2 LliJliMuS%- The following terms will be usedthroughout t is specification on Cable Assemblies and are -here defined for clarity.6.2.1 L. - Unless othe

49、rwise specified in the contractor purchase order lot size is defined as one monthsscheduled production.6.2.2 . - Reference h:rein to “CableAssembly” or Cable Assemblies” shall mean the particularcable assembly as subject to I rocurement under the contractor purchase order. Ifmore t an one cabIe assembly isunder procurement, samples of each type ca