DOT MIL-C-19654-1956 CABLE TELEPHONE SUBMARINE《海底电话电缆》.pdf

1、-_ 1fcc-l9654( CG ) 32 November 19% SUPERSEDING CGS-i5C-i( 2) 27 March 3956 7 June 1954 -fi-2a(l) I- MILITARY SPECIFICA!CION CABLE, TEZEPHONE; SUBMARINE 1, scorn 1.1 thermoplastic insulated submarine cable, and underground connections thereto, containing from one to four conductors, for use in coast

2、al waters for communication and communiaation control ptrposes. SCOwe - This specification covers 8yrrth0tfC rubber and 1 a2 this specification: 102.1 cables of Opecifie types as specified in.Tables V and VI, Classific ation , - The following cables are covered der Twe ?. - One, two, and four conduc

3、tor communication loza2 tion as may be specified in the invitation for bias or ptrchase order, or separdte detail specificationa, 2, APPbICABLE DOCUMEWS Tvm II, - Such other cables of similar general construc- 2.1 in effect on the date of invitation for bids, form a part of this ap8ci- i3 cationt t-

4、 The following specifications and standards, of the issue SPECIFICATIONS None STANDARDS Federal Federal Test athod Standard No, 601, Rubber, ffampllng and Testing, FE9 SUP. CLASS 6145 E 4- - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(Copie6 of

5、speoifioafions , standardff , drawhqp e and publications rclquird by oontractora fn oanneotioti wlth rrycific procuremnt functions should tMi obtakned from the yoowfng ant.lrtty or a8 dircr)hetic resins, The jute shall be highly resistant to deterioration and shall have no contaminating or oorroave

6、efeots on other component parts of the cable. 3.1*4*3 V shall be urd for outer cable 8eme8. It shalf“119 as 8pOCffied abave which ha8 been thoroughly dried under vacum and impregnated with a campound consisting of LjO per .cent paraffin and 50 per cant petroleum asphalt, The paraffin and petroleum a

7、sphalt shal b6 commercially free from dfrf and ofher for- eQn materials, 31.5 out, drawn from iron or steel of such quality ard composition that when draw*1 as the diameter of the coated wire in decimal fractions of an inch, The pehissble varfations over or under naninal diameter shall. be as follcn

8、tsr Siaa, - The size of the finished wire shall be expressed For wlre 0,lW inch or over in diameter - - O.OO!j inch For we under 0.109 inch in diameter - - .I 0.003 inah, The wire of each coil shall be gauged in three places; one mar each end and one.approxmately at the midQle. A coil shall be rejec

9、ted 3.f the average gauge is not within the dimater Wts 8s Bpecified above, 3,i,3*2 8huS over .148 inch to ,250 inch inclusive, three diameters; afees over ,250 Idch, five diam- eter4, In the wrap .test, the zinc coating shall adhere fim4 to the wire, so that t does not flake and nona of the coating

10、 can be removcrd from the wire by rubbing with the bare fingers. 3.1e5.3 Wm. The weight of the aoating shall be determined 8s described in the latest haue of Standard Methods of Determining Wefght. of coating of Zinc Coated Articles (ASTM Desgnation WO), and ahail be not less than the.waighta outlin

11、ed in Table TI, 4 _ - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-/ TABLE II Outside diameter os. per sq. ft, of Q$ wire e ,065 (i .50 ,083 0.60 .lW 0.80 . 165 3.90 ,203 or over LOO -. - - . 3.1.5.4 Tar duc - Before application to the cable, the

12、armor wlm shall be heated in an wen mfficLent to drive off al,moisture. , The wfre while warm shall be dipped in a hot -compound sf tar, contatning nothing deleterious to the com and so preparad as to adhere to the we and form, when set, a complete and fixed pres.ematiy9 coating, The WIPe when coate

13、d shall not be woirnd on bobbins until thg eonpoiind has become thoroughly cooled and set. 3.1.5.5 posed of coal tar blended with natural as.phal+Y. The melting point of this compound shall be not less than 12Co F, as detemned by the ball and ring test. Tar and amhalt commund. - This compound. shall

14、 be com- 302.1 Conductors. - All conductors shall ke of soft annealed copper wire. tin or other coattag win be requinad. sulation is specified, tinned copper wire shall he used, or lead alloy- coated if specified, All wire and coatings shall met the requirements of 3.Y,l. and 3.1.2. If non-corrosive

15、 thermoplastic insu1a“von fa ;rpecotfitsd, no If natural or synthetic rtibber in- 3. i! . I; ed, forming each conductor shall be as speciffed for the particular type of cable manufactured, of the wire and its coating, and such abrasion shall. be deemed cause for rejection, Stranding - All conductors

16、 shall be concentrically strand The munber of conductors and the number and diameter of the wires Care shall be taken when stranding to avoid abrasion 3.2rL2 eonductor (or app1i.d spiral Coax cable conductors. - In cocucial cables the outer shiel%hall consist of copper wire8 , as specified in.3.2.3.

17、, .ly with a buttable lay, directly over the eonductor or in- sulation before application of the fabyic conductor tape. diameter of the wires shall be as spscified for the particular tm of oable being manufactured, and the lay shall bs such tbat the coverage ia the maximum consistent with good mecha

18、nical practice. The number and Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3*2.1.*3 tor the adj aoent Reu, When repairs or joints are made in the conduc- work shall be perfrmed in such ta manner that the joint and the conductor is as strong sind

19、durable, electrically and mechanically, as-the remainder of the conductor, 3,2*2 Continuou s loadinorig8 shall oonsist of a properly 6 t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-17b54 61 W 7779706 0087745 b W I I i wmm m b.b. ni i IiiI i

20、 il lill I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3*2,3d+ Eecw reaw erne- - Ail insulated conductors, when tested under the conditions specified under Section 4 shall with- stand the voltages spcified in Table IV. TABLE IV Average wall thick

21、- pess 64th (in 3 4 5 6 2 8 9 io duration of AC shall be five minutes, and DC 15 minutes. tests, preliqinary, core and completed cable: For wall thicknesses of 6/64 inch or less, either DC or AC voltage For wall. thicknesses of 3A3.5 wire and oable, when tested under the conditions specified in 4.2,

22、 shall have a reaistance when corrected to a temperature of 3OF. of not lesa than the value obtained from the following formula: _IJnsulalt.ion re- . - The insulation resistance of all 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-19654 bL

23、 = 339790b 0087747 T t %ere R = Megohms per 1000 ft. of cable K = 10,000 D = Specified average outside diameter of insulation d I Specified dianster of conductor (Por stranded con- ductors 94 ger cent of diameter over the strand). 32.3.6 testad under the corditbns specfified in 4.2, shall haare a ca

24、pacity to gvuid at I000 cycles of not more than the value obtained from the fol- lowing formula: W. - The capacity of ab1 wire and cable, when mese c z Capacitance, microfarads per 1000 t. at GOOF, M = 3.0 D = Specified average jutside diameter of insulation d = Specified diameter of conductor (FOP

25、stranded con- ductors 94 per cent of diameter over the strand). Condwor an d iacket insu-. - The insulattng compound It shall be applied concentrically about the stranded or While there shall be a 3*2030? shall be of-the material specified for the particular type of cable being manufactur8d.r loaded

26、 conductor and shall fit tightly thereto. pronounced adhesion of the insulation to the conductor, this adhesion shall not be sufficient to prevent the insulation from beingstripped from the conductor when splicing or terminating. insulation shall conform to the limits specified for the type of cable

27、 being manufactured. The dimensions of the 302.3.?.1 Reaairs. - %hen repairs or joints are made In Lhe insula- tion, the work shall be performed in such manner that the Pepaired part of the joint and all adjacent parts affected in the process shall be as strong and durable, electrically and inachani

28、ctrlly,., as the remainder of the insulation. .9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.204 Condu- tawg 0- 3eZe4ei natural rubber filled fabric tay shall is applied wer each insulated conductor, outer konductor. shall be applied after vulc

29、animtion and UIMXI cermletia;? of the prelim- inqry electrical tests, with a suitable ley and owflsp of not lass than 24 of the width of the tape. The colors UPA sball be in accord- ance with the following. unless othemise crmified in :be order or other applicable specification: Fabric taw . - Whari

30、 PO pwified. a colored synthetic or This tapa shall meet tbe requfremsnts of 3.1.3, It In coaxial cableci, this tape shall he av?fed over the Single conductor cab19 : “wo conductor cable : Blue anC white, Four conductor cable : B?ue, red, trhittl, green DQnxijacnnt) Any co?.or (Blue and whits opposi

31、te or B 4s . - When so specified, a %pass tap O.O3 inch in thicknew Y and 3 4 inch in width shall be appltcd per the fabric tape with an overlap of not less than ld of thpi Mdl-Si Qf the tape. The tape shall be applied in P workmanlike nlm,mr so as to avoid crimp- ing and wrinkling, 3,2o4*3. conduct

32、ors shall be laid up spirally with a suitable right hand lay. All voids bet;ween conductors shall be filled with jute to form a smooth round core, ovsr which a black synthetic or rubher filled fabric core tape shall be applied hith sn overlap approxbately 2l meet the rsqtifreme;it.s of 3.1.3; 3,1.4;

33、 3.1.4.1; 3,1,4.2 and 3.1.4,3. conductors shall be laid up so as to be opposite of nori-adjacent, 3r2r4o2 -and cor e tau g. The mauirar! nimber of taped The jute filler shall he of watc?rp-oof jute and this filler In four conductor ciibhthe blue ard white taped 3a2e4o4 jacket shall be applied over t

34、he tawd core. all4 anotkm black synthntic or natural rubber filler fabric tape meeting the requirments of 3.1.3 shall be applied over the jacket with an ovsrI.p a3yaxiriratsly 20$ of the width of the tape. the minimuri wall thickness thereof shall be as sneciiedgfor the particu- lar typ of cable bei

35、ng manufactured. kets, - When PO specified, an insulating The matmial used for tha insulating jacket and 3.2.5 -e coseriw * - 3*2*5*1 requirement3 of 3.2.4; 3.2.4.1; 3.1.4.2 end 3.1.4.3. The number of * jut e 8e shall ho of wpt.cmroof jute meeting the 10 Provided by IHSNot for ResaleNo reproduction

36、or networking permitted without license from IHS-,-,-i MIL-C-L765Y bL m 7777706 00877Y7 3 W * m-col9654( CO) layers and the weight of jute employed shall be as specified for the type of cable befng manufactured. be applied with a right hand lay. first layer shall be applied with a left hand lay and

37、the second layer with a right hand lay. The ratio of the length of lay to pitch diameter of each serve shall be not less than three or mre than four and one-half, and the number of strands employed shall be such that very close coverage is obtained. compact layer free from lumps or bunching. When on

38、e layer fs specified, it shall If two layers are specified, the The servings shall be so applied that they form a smooth 3*2*5*2 Amoy. - The armor shall consist of preformed, tar dipped galvanized steel wire, meeting all requirements of 3.1.5; 3.l.5.l; 3,1,5.2; 3.1.5.3; 3.1.5.4 and 3.i.5.5. The diam

39、eter of the wire shall be as spefficd for the particular type of cable being manufactured. shall be applied spirally witha left hand lay. of lay to pitch diameter shall be not less than eight or more than 10, and the numei. of armor wires shall be such as to insure not less than 95 per cent coverage

40、. The wire shall be so preformed that it will remain in proper position and produce maximum flexibility of the finished cable, All joints in the armor shall be welded and no weld shall be within 12 feet of another weld, All joints shall be thoroughly cleaned after weld- ing and coated with sinc. all

41、 requirements specified for the original wire. tar and asphalt meeting the requirements of 3,105e5 shall be made over the armor. application of the compound shall be omitted and the armor wire shall not be precoated with tar. It The ratio of the length Joints so treated shall be capable of meeting A

42、n application of hot P If a protective jacket is to be applied over the armor, the 3.2.5.3 meeting the requirements of 3.1.4; 3.1.4.1; 3,1,4.2 and 3.1.4.3. The number of layers and the weight of the jute employed shall. be as speci- fiedofor the particular type of cable being manufactured. When one

43、layer is specified, it shall be applied with a right hand lay. If two layers are specified, the first layer shall be applied with a right hand lay and the second layer with a left hand lay. The ratio of the length of lay to the pitch diameter of each serve shall be not less than three QT more than f

44、our and one-half, and the number of strands employed shall be such that very close coverage is obtained. that it forma a smooth compact layer free from lumps or bunching. An applicatiomof hot tar and asphalt compound meeting the requfrements o% 3.1.5.5 shall be made over the outer Bayer, followed by

45、 a thorough coat- ing of whitewash . Outer .lute serveg shall be of vacuum impregnated jute The serving shall be so applied 3.2.5.4 of synthetic rubber compound shall%e applied over the mor in lieu of outer jute serves. Pratectiv e lacket. - When so specified, a pwtectlve jacket The jacket compound

46、shall meet all requirements of il *. - / Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIIrnC-l96$(CG) 3*2 herein, This jacket shall be applied in two layers, The first layer shall be not less than 0.0625 inch in thickness, A aerving of two layers

47、of lO/2/3 seine twine shall be applied spirally in revzrse directions, with approximately seven strands per inch in each layer, for the purpose of binding the cornpound firmly to the armor. Over the serving of seine twine, a second layer of the same compound shall be aplied. The wall thickness of ba

48、th layers of compound shall be not less than that specit- fied for the partiaular type of cable being manufactured, The jacket shall be cured in a mould or continuous lead sheath extruded directly over the jacket, and removed after vulcanizatfon, The compound shall be applied concentrically about th

49、e cable in such a manner that itwfll fit tightly thereto filling the interstices af the armor, and be free of holes, lumps, depressions, or objectionable waviness and the finished cable shall present a smooth, dense, shiny appearance, 3*2.5*5 bad sheath. - If a lead sheath if specified, it shall be composed of commercially pure lead, It shall be clo