1、+ fi: i: -. . . 8. . -. , _ - _- MIL-C-AL753 LO 777770b 0360333 . . - . . . . . . . . I-. MIL-C-81953 (AS) ; . - . “ . . !z:.:.: . . e . I.- . - . - . “.-l- -.-.-.- CABLE ASSEiYBLY, MAGNETIC SWEEP MARK i7 mn 1 . -,- -1-1- . -I . I - 1 z:s;: . -_ . b. - -. . specification has been aDprorerl by: the N
2、aval Air Systems . . . . . - . . Command, Department of the Navy. 1. SCOPE . . . . . , . ,. I. . c . , ). . lm mis specification covers electrodes, tisti and pigtail . cable for magnetic minesweeping. r. -. . - -I. - -.-. - .- +_ _ _. . * , . - -. _.- . - . -._ .- - - . -. .-. -. - .- - .-. _._I. -_
3、 . - . . . I .-.I.- . -.- -.- -: 1 . . *$;?L. -.:I: . - - .“ y, . jr . -. .l- -.- 1 kL-.x-.Li-.- . - - . . . -. - * I- . LI.I- . - . -% I . ,. . -. “ -“ “ -“ t:II:I“:Z:L7:.7: F-ESg-.: I_-._-.- . _.- . . - . .-.-.-.- - _._.-.-.-. e . . . . L-P-535 - Plastic Sheet (Sheeting and Film): Viriyl Chloride
4、Polymer and Vinyl Chloride-Vinyl Acetate - Coplymer, Rigid. ._.-.- I. “ -. -. . . . . -. . . . . - -.-.- .-.- -.- It- . . . . . . . _ . - -.-.-.- I I- I- -.-. . UU-P-271 - Paper, Kraft, Wrapping, Waterproofed. .- ._ . , . r_ ._ I . “.- _.I_-_. - . I . I . . . - - . _ -. C- .-.- -_- _ . - -.-.-.-.- .
5、 . .-. . -.- _.-. - . - . . - t .- “ . - . _- _. CA . c:;:.I: . . . . . . -. . 2 . i :-:.:. *= . . “ -. .i. . . e . , . . . . .-. .- . .-a ._ . _I - - . ,. -. !. . - . . z. . . . x:., y. . . .- . i . . MIL-C-81953 (AS) and resilient and shall have high flexibility, tensile strength and resis- tance
6、to ozone attack, sunlight, heat, water, oil and abrasion. They shall vulcanize readily to other synthetic rubbers used in the insulation and to natural rubber. 3.1.1.3 Insulation - Jacket material combinations. Where insulation material is SBR, jacket material may be polychloroprene or chlorosulphon
7、ated polyethylene. or a combination of chlorosulphonated polyethylene and SBR, jacket material shall be chlorosulphonated polyethylene, Where insulation material is chlorosulphonated polyethylene 3.1.2 Reinforcing fabric or braid. Fabric or braid used to reinforce the synthetic rubber in the cable i
8、nsulation shall be strong, flexible material made of natural or synthetic fibers. to the synthetic rubber materials and shall not be damaged by the tempera- ture used to vulcanize the rubber. be used in the cable jacket. It shall be bonded firmly Reinforcing fabric or braid shall not 3.2 General req
9、uirements, The cable assembly shall be as specified hereinafter. this specification and the referenced drawings, the requirements of this specification shall govern. In the event of any conflict between the requirements of 3.2.1 Splices. No factory splices shall be allowed in individual sections of
10、any cable unless approved by the command or agency concerned. 3.2.2 Flexural endurance. The cable assembly shall have high flexural endurance and shall be sufficiently flexible at all temperatures between minus 37OC and plus 6OoC to permit ready handling and reeling on a drum .42 inches in diameter.
11、 48 inches in diameter. reel 34 inches in diameter. “S“ cable shall be suitable for storage on a reel Electrodes shall be suitable for storage on a 3.2.3 Cable sheath. The cable sheath shall consist of an inner insula- tion in accordance with 3.1.1.1 and an outer jacket in accordance with The insula
12、tion and jacket shall be vulcanized together in such a manner as to produce a single homogeneous sheath about the.conductor and shall withstand the ply separation test specified in 4.4-5.3. . 3.1.1.2. 3.2.4 The sheath of flexible copper terminal-cables used on the “S“ cable shall be the same as that
13、 usedon the buoyant section of the “S“ cable. material as is used for the cable jacket. The molded sheath 0ve.r terminal lug barrels shall be the sane 3.2.4.1 The insulation of the terminal lugs shzll be securely vul- canized to the sheath of the terminal cables and finul-y bonded to the terminal ba
14、rrels and flanges. When tested in accordance with 4.4.6 the adhesion shall be not less than 10 pounds per inch of width. . . / I . . . L. c“.:=.*. . . _- - . . .-. _- . . -I . -.-. Y. - - .- . - . . . -.- . . -._ . . -.-.- . .- . - .- - .-. . . - -_.- . - . . -.-._ -A-.-.- - n: L - -.-.-.- I-“. .- :
15、L.:=: . r .- .-. . .-.-.- - ,.-*-.* L II . . - d . 4 Licensed by Information Handling Services7- . . I_ L.:.: - C . “ - . _. +.Zz-:z:.-: . . .+-* -. MIL-C-81953 (AS) 3.2.5 Sheath materials used in pigtail cable shall be the same as that used in the flexible copper terminal-cables of 3.2.4 and 3.2.4.
16、1. 3.2.6 Insulated sleeves. Material of insulated sleeves shall be polychloroprene or chlorosulphonated polyethylene. 3.2.7 Government furnished equipment. When specified (see 6 2), the Government will furnish the reels specified in 5.2.1 3.3 Electrode cable. The electrode cable shall be a single co
17、nductor, self-buoyant, noninsulated cable for conducting electrical currents into seawater. 3.3.1 Construction. The electrode shall be constructed as shown on Drawing 30003-506ASl.00. ments of this specification and the reference drawings, the requirements of this specification shall govern, In the
18、event of any conflict between the require- 3.3.2 Core. Core of electrode shall consist of a 5/8-inch dacron - polyester rope with polyethylene jacket as a stress member surrounded by cellular polyethylene as flotation material. be made of prestretched yarns sor low elongation and have a nominal brea
19、k- ing strength of 13,750 lbs. over the dacron polyester rope to an average diameter of 2.40 inches - $0.10 inch. Specific gravity of core to be 0.57 9.05. ethylene to be colored brown for sunlight protection. gravity of complete electrode to be less than 1.00. rope in core shall be well centered; c
20、ore shall be as nearly round and uniform along length of core as possible. Dacron polyester rope shall Cellular polyethylene shall be foamed -extruded Cellular poly- Overall specific Dacron polyester 3.3.3 - Wire. Wire shall be Ho. 6 AWG solid, continuous length, soft bare EC grade aluminum, Vires s
21、hall be cabled around core with an even tension and a left-hand lay at a pitch angle of approximately 20 degrees. The wire shall be applied so that it will remain in proper position and permit maximum flexibility of the finished electrode. shall be 46 22 .and shall be such as to insure a minimum cov
22、erage of 9G percent as determined by: The number of wires 0.162 Sec u x 100 h - (DN. 162II percent coverage = where N = u= D= number of wires pitch angle average diameter of core, inches. .-.-,-.- . . . . . . . -.-.- . - - . . . -.-. I - . -.-.- ._ -.-.-. I_-_._. . .-. . -. , . ._._I_.C- . t -_. j .
23、 . - . -. . . . ._ - . _ -. . I . _._.- -.-. -. j _.- . : . . . I . . . c . . . . . . 3.3.4 Serving. Serving shall consist of a continuous length of No. 10 AWG EC grade B-19 aluminum wire in accordance with ASTM B230-71 wound in tight left-hand lay around conductors as shown in Drawing 30003-506AS10
24、0. 5 Licensed by Information Handling Services- - . I - -. MIL-C-3753 LO M 9777706 0360338 3 . .- . . . . . . -. . -.-.*- . -.*- - ._. -, . . . . - -._ . . - . -.-* - I .-.-.- . -_.- . ._.- . . .-.- . . - . . -. . -.- . “-. I . -.-. . . .t I 3.3.5 Lug. One end of electrode shall be terminated with a
25、n alumi- The stop shall be num stop. as shown on Drawing 30003-506ASl00, Find B3. potted onto dacron polyester rope prior to installation of lug Pind a5 with a glass fiber-epoxy resin compound consisting of approximately 75 percent epoxy resin and 25 percent glass fibers (percentages given by weight
26、). Epoxy resin shall be equivalent to that manufactured by Kristel Kraft, Inc., Palmetto, Florida, identified as “USNHDL Spec No. 3.“ Glass fibers shall be equivalent to that manufactured by Ren Plastics, Inc., Lansing 9, Michigan, identified as B701 1/32 inch milled fibers. After pouring potting co
27、mpound, allow at least 24 hours curing time; remove excess compound before proceeding with assembly. Complete assembly by installing Serving Find 119, lug Find #5 and molding compound Find if7 as shown on Drawing No. 30003-506AS100, . . . ,: . . . ._ .-. . . . . . . , . . j . - . b. 3.3.6 Towing eye
28、. Towing-eye and installation are shown on Drawing 30003-506AS100. -. - 1. -. c - -_f. . -* _c. :z:.z-T-?2zz . - , .-. L -.- .:.:.-:.-. . . P .-._.- _ .- -.- . - I .-_I-. -_ - .-.A.-.-.- - -._ - -.- . - - . F:=.7i1 -. ._ f 3.3.7 Breaking strength. The minimum breaking strength of finished electrode
29、shall be 6000 pounds. , - . - I._ ) . . - , . .- I . “ -.- ?.- . .- . . . -+ . - - - - I 3 .- . ,-_.- lll_- 3.4 Type “S“ Cable. The type “S“ cable shall be a single conductor, self-buoyant, insulated cable suitable for conducting d.c, electricity fr0m.a power source to an electrode. 11 II 3.4.1 Buoy
30、ancy. Type S cable shall have a measured closed end specific gravity of not more than 0.94 and an open end specific gravity of not more than 0.96. Il Il 3.4.2 Construction. Type S cable shall be constructed as shown on Drawing 30003-506ASi01. 3.4.3 Sheath thickness. The insulation and jacketing mate
31、rials used in the sheath of the “S“ cable shall have nominal thicknesses of 120 and . 50 miis, respectively. 3.4.4 Terminals. Each end of the type “S“ cable shall be terminated with a flexible connection consisting of (a) parts 9, 8, and 7 as shown on Drawing 30003-506AS101; (b) 6 feet, O inch of 10
32、00 MCM 61 by 7/.0484 inch NHD copper cable; and (c) part 6 as shown on Drawicg 30003-506ASl01. 3.4.5 Physical and electrical properties. Type “S“ cable shall have the following physical and electrical properties. .- Current carrying capacity - 2200 amperes continuous with the buoyant section in seaw
33、ater at a temperature of 85 degrees F. Maximum d.c. resistance at 25 degrees C. - total resistance of cable shall. not exceed 0.008 0“. Minimum breaking strength with terminals - 15,000 pounds. 6 - . . , . L . . “ . _* . . - . ._. . . _-.- . . . -. . . - - . -.- . .-. 1 -_.- i . . . . -. . _. -. .-
34、. , . , Licensed by Information Handling Services. . . . . - r -. . .-.- -C-. . -. - . - _-._ .- - . . .,-._. . . - . - . . . - - . -c -_ _.-. -.* , I . i:.: -._- -.-II_ .-.- -._.-. “-,_-. . L. .- C-. ) . -. _. 14-.-.c -.- - . . a-.-.-.- - _ -.-.-.- ._. - -.- ,- - -.-. -LI- c -.-. -*.- ,. . _f_- . -
35、 . . ,.-I- “_._. . - . -. -.- . *_- I I -I- . L i;ilri.ri= . . . .- . . . . . . . . . . i .-A-.- 1 -.- -.-.-. - i- . -.- -.- k-6 -. I.- .-. . - I . _- _.-.-. C_.- -.- -. - -.-. ,.-.-I -. -. l. . _-.I- . _ .-. G -. -. : MIL-C-1753 LO 7777906 0360137 5 MIL-C-g1953( AS) . .- . _.+.-. - . _. . . - .-. .
36、- * . .- ,. -. . j-.-.-.- F-.- . . I .- i . -_-._ ): _-.-. .-.-.- . : . ,.- . . -.- . . .-._- -.-.- L. . -. -.- CI:r.%“:.r: K,:.:*y2*.2 y*. :r.=.-:.=:.-=:“ . .-.- .-.-.-l_.- _ - .+ . . . _ . -.- ,-.-.- . - .- . *-.I . . - *- . .- i I . . . . _._ . -. “ . L . .+ .-.-.I. I . -_. ,.- . _- -u - - - . .
37、. .-. - -.-. - . -4.- . - _.- -I.+. - _I-. Es - .- I- -.-. .- - . ,. I-._. 1 ).* . .-. . I:.:.:,: (d) D. c. contact resistance between parts 7 and 8 as shown on Drawing 30003-506AS101 shall be not greater than 4 microhm. . . ,. . . - . . . . -.- c - i ,- I. 3.5 Pigtail cable. The pigtail cable shall
38、 be a single conductor nonbuoyant, insulated cable suitable for conducting direct current from a power source to an electrode. . 3.5.1 Construction. Pigtail cable shall be constructed as shown on Drawing 30003-506AS101. 3.5.2 Sheath thickness. nominal thickness of 0.200 inch. The sheath of pigtail c
39、able shall have a 3.5.3 Terminals. Each end of the pigtail cable shall be terminated with part 6 as shown on Drawing 30003-506ASl01. 3.5.4 Physical and electrical properties. Pigtail cable shall have the following physical and electrical properties. (a) Current carrying capacity - 2200 amperes conti
40、nuous with cable in seawater at a temperature of 85 degrees F. (b) Minimum breaking strength with terminals - 15,000 pounds. . . . . . . . . . . . . - “ “ , 3.6 Insulating sleeve. The insulating sleeve shall be a synthetic rubber sleeve for protecting the terminals of the pigtail and “S“ cable. 3.6.
41、1 Construction. Insulating sleeves shall be constructed as shown on Drawing 30003-506AS101. 3.7 Identification. 3.7.1 Cable. The information listed in 3.7.1.1 shall be clearly molded into the insulation over the terminal barrels on both ends of “Srr type cables. . . . . . . b- * . I -_ Identificatio
42、n information. Identification information follows : Cable type designation (“S“ cable only) Manufacturer . Year of manufacture. Serial number. Federal stock number. 7 I -.-.I . _.-_-.-.-. . -. - - . -.-.-.-.-. I .-. - - C.-. . i ,- “. r-l - . - 4 .;.;:;T2ir2= ._, . -. Licensed by Information Handlin
43、g Services.c. MIL-C-BI753 LO W 7777906 0360340 I W . .- . . . . . -_.-. . . . . .- , . . .-. - .- .e-. . . . . .-a. ,.-.-.-u. . - . -.- . _- . -_ .*.- c i-il.r-r-ri.r. .-.-. . _-_ , . . . 3.7.1.2 Serial numbers. Serial numbers will be furnished by the command or agency concerned. 1 :I.:L- - . . . .
44、I . . . i . L . i . ! . . . . C. . _._ Es=- . I._. - . .a.-.- -_. -.- . -.-.-.- cc -.-.-.-. _ I: -.- .-.-. - . L -.-. - -.-. . - k:zz:z-:-zz .- . pT-.-y-y*z “ - *._. -. ._. -“I-. ._-_- . . .-.- . ._-_-. ._.I.- . . -. - -.- . . . . . _. . - . . . . .-.-. .-.- . . . - . . -. . . .- . . i L:-zzL L - -
45、- I- .-. 3.7.2 Reels. ,. . . . . . . . . i. . . . . .-._ -.-. - . -_.- -.-.-* _._. ,_.-_.-. I L 3.7.2.1 Identification plates. Both flanges of each reel shall have securely affixed thereto identification plates made by heat sealing between two approximately O. 020-inch thick clear, transparent, viny
46、l sheets, in accordance with L-P-535, a paper printed with the marking information required (see 5.4). Identification plates of other types providing equiv- alent legibility and durability may be used when specifically approved by the command or agency concerned. 3,7.2.2 Color series. Each reel of c
47、able shall be identified with a keyed series of colors to indicate the year of manufacture. This identi- fication shall consist of a stripe approximately 2 inches wide and colored as specified herein for the year of manufacture. The cycle of colors shall be repeated every fifth year. Year of Identifying Manufacture Color 1970 1975 White 1971 1976 Red 1972 1977 Green 1973 1978 Orange 1974 1979 Blue 3.7.2.2.1 The colored stripe shall be applied circumferentially over the laggi
