1、MIL-C-lb39E bl 99999Ob OV59277 INCH-POUNDS MIL-C-l6839E(OS) 25 October 1990 SUPERSEDING 29 May 1969 MIL-C-l6839D(OS) MILITARY SPECIFICATION CABLE, SPECIAL PURPOSE, ELECTRICAL (UNDERWATER USE) This specification is approved for use by the Naval Sea Systems Command, Department of the Navy and is avail
2、able for use by all Departments and Agencies of the Department of Defense. i. SCOPE 1.1 Scope. This specification covers single and multi-conductor special purpose electrical cable for underwater use. 1.2 Classification. Cable shall be of the following types, as specified (see 6.2): Type DMU Type DN
3、U Type DPU Type MSU Type MTU Type SPU Double Conductor, demolition, magnetic Double Conductor, demolition, nonmagnetic Double Conductor, oil resistant, portable Multiple Conductor, steel core Multiple Conductor, cotton or jute core Single Conductor, heat and oil resistant flexible 1.3 Conductor size
4、. The conductor size shall be in accordance with American Wire Gauge (AWG) size to 0000AWG; larger sizes shall be indicated by circular mil area. 1.4 Military part number. Military part numbers shall be in accordance with the following example: M 16839 - DMU 4 Where: M is a prefix meaning military s
5、pecification 16839 is the specification number DMU is the cable type 4 is the AWG size Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer, Naval Ordnance Station, Standardization
6、 Branch (3730), Indian Head, MD 20640-5000, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 6145 DISTRIBUTiON STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleN
7、o reproduction or networking permitted without license from IHS-,-,-L MIL-C-lb837E bL M 7999706 0457278 T = j MIL-C- 16839E(OS) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this document to the extent
8、specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAT QQ-W-343 Wire, Electrical and None
9、lectrical, Copper (Uninsulated) MILITARY MIL-(2-915 Cable and Cord, Electrical, for Shipboard Use, General Specification for MIL-W-83420 Wire Rope, Flexible, For Aircraft Control STANDARDS FEDERAL FED-STD-228 Cable and Wire, Insulated; Methods of Testing (Unless otherwise indicated, copies of federa
10、l and military specifications and standards are available from the Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwi
11、se specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FO
12、R TESTING AND MATERIALS ASTM A 228 Standard Specification for Steel Wire, Music Spring Quality (DOD Adopted) ASTM A 818 Standard Specification for Coppered Carbon Steel Wire (DOD Adopted) ASTM D 2000 Standard Classification System for Rubber Products in Automotive Applications (DOD Adopted) 2 Provid
13、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-l6839E( OS) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Non-Government standards and other publications are
14、 normally available from the organizations that prepare or distribute the documents. These documents may also be available in or through libraries or other informational services.) l 3.23 Insulation, natural rubber. 23 Order of precedence. In the event of a conflict between the text of this document
15、 and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 General. Unless otherwise specified, all cables shall be manufactured in acco
16、rdance with the requirements of MIL-C-915. . 3.2 Materials. 3.2.1 Conductors, 3.2.1.1 Copper. Copper conductors shall be in accordance with QQ-W-343, except that the inclusion of bismuth in the tin-lead alloy coating is optional. 3.2.1.2 Other conductors. Conductors of other materiais shall be as sp
17、ecified in 3.4. 3.2.2 Strength members. Members to increase the cable strength shall be as specified in 3.4. a 3.2.3.1 Application. Each conductor shall be covered for its entire length with a well-centered wall of vulcanized rubber. 3.2.3.2 General composition. The insulation compound shall be a ho
18、mogeneous mixture. The rubber shall be in accordance with line call-out 4AA52OA13C2OEA14J of ASTM D 2000. The compound shall contain only the following ingredients: rubber, sulphur, inorganic mineral filler, waxy hydrocarbons, organic accelerators, and anti-oxidant. The sulphur shall be of the highe
19、st purity and of extreme fineness. The inorganic mineral fillers shall be of extreme fineness and shall be substantially free of moisture, red lead, free carbon, or any substance likely to exert a deleterious effect on the rubber. The waxy hydrocarbons shall be free from saponifiable matter. a 3 Pro
20、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-Lb839E bL W 999990b 0459280 8 4, 3,233 Chemical analysis. Unless otherwise approved, insulation removed from finished conductors shall conform to the following chemical requirements (percentages are
21、shown by weight): Rubber Waxy hydrocarbons Total sulphur Free sulphur Inorganic mineral fillers, organic accelerators, and antioxidants Specific gravity Not less than 40 percent Maximum 3 percent Maximum 3 percent Maximum 0.5 percent Remainder Between 0.93 and 1.14 3.23.4 Physical properties. Insula
22、tion removed from conductors not earlier than 48 hours after completion of the cable shall meet the following physical requirements at ordinary room temperature, 65 to 90 degrees Fahrenheit (“F) (18 to 32 degrees Celsius (“C): a. The tensile strength shall be not less than 1300 pounds per square inc
23、h of original cross-sectional area. b. The set shall be not more than 318 inch in 2 inches after testing in accordance with 4.3.1.1.1. c. After testing in accordance with 4.3.1.1.1, the specimen shall undergo a second elongation from the “length after set“ to at least 10 inches, prior to rupture. d,
24、 After 96 hours in an atmosphere of oxygen at 300 pounds per square inch pressure at a temperature of 158F (70“C), the maximum depreciation of tensile strength and elongation shall not exceed 25 percent. A maximum variation of 10 pounds per square inch, 2F (l“C), and 1 hour, in either direction duri
25、ng the aging process, is permissible. 3.2.4 Sheath, 3.2.4.1 Application. The sheath compound shall be applied concentrically about the grouped conductors and so cured as to assure their accurate centering within the finished sheath. The finished, sheathed cable shall be circular in cross section and
26、 of uniform diameter throughout its length. 3.2.4.1.1 Curing. The compound shall be cured in a close fitting mold or by the continuous extrusion method. After vulcanizing, the sheath shall be a firmly bound, strong, highly elastic, homogeneous mass. 4 Provided by IHSNot for ResaleNo reproduction or
27、networking permitted without license from IHS-,-,-MILG16839E(OS) , 3.2.4.2 Physical properties. Sheathing removed from finished cables not earlier than 48 hours after vulcanization, shall meet the following physical requirements at ordinary room temperature, 65 to 90F (18 to 32C): a. The tensile str
28、ength shall be not less than 3500 pounds per square inch of original cross-sectional area. b. The set shall be not more than 3/16 inch in 2 inches after testing in accordance with 4.3.1.1.1. c. After testing in accordance with 4.3.1.1.1, the specimen shall undergo a record elongation from the “lengt
29、h after set“ to at least 10 inches, prior to rupture. d. After 96 hours in an atmosphere of oxygen at 300 pounds per square inch pressure at a temperature of 158F (70“C), the maximum depreciation of tensile strength and elongation shall not exceed 25 percent. A maximum variation of 10 pounds per squ
30、are inch, 2F (l“C), and 1 hour, in either direction during the aging process, is permissible. 3.2.43 Surface finish. The surface of the finished cable shall present a smooth, dense, shiny appearance free of all roughness or other regularities. There shall be no objectionable waviness due to the fail
31、ure of the sheath to tightly grip the conductors. 3.3 Manufacturers identification. A marker taDe in accordance with MIL-C-915 shall be provided for each cable except that the required inforhation shall be as follows: Specification MILC-16839 Military part number. For type DMU and DNU, include wheth
32、er magnetic or nonmagnetic Name of manufacturer Name and location of plant Year of manufacture 3.4 Detail requirements. Detail requirements or exceptions applicable to individual types are specified in table I and in 3.4.1 through 3.4.6.4. 3.4.1 Type DMU. 3.4.1.1 Construction, First. The sheath comp
33、ound shall be a homogeneous mixture. The rubber shall be in accordance with line call-out 4AA535Al3C2OEAl4J OE ASTM D 2000. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-Lb837E bL W 779770b 0457282 L W MIL-C- 16839E(OS) IA CI O0 s O0 O0 0:
34、6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c MIL-C-Lb839E bL 9797906 OY57283 3 9 7 Second. Third. Fourth. Fifth. Sixth. Sevent h. Eighth. A conductor of coated wire in accordance with 3.2.1.1. Successive concentric lays to be of opposite hand
35、on the steel strength member. A separator (optional). A wall of natural rubber insulation (see 3.2.3). The rubber shall be color- coded for the identification of conductors. The choice of colors is optional. A rayon inner braid (see MLC-915). Two conductors, twisted together with a lay not greater t
36、han 3 inches, and a treated moisture-resistant jute filler free of excess wax (less than 2 percent extractable, the wax to be other than paraffin), to form an essentially round assembly. A binder braid over the assembly. A natural rubber sheath: General composition-The sheath compound shall consist
37、of a homogeneous mixture with the rubber content being either fine Para or best quality plantation-grown Hevea Brasiliensis rubber. The rubber shall not have been previously used in a compound. The remainder of the compound shall consist of sulphuric, inorganic mineral fillers, carbon black, anti-ox
38、idants, and organic accelerators. Chemical analysis-Sheathing removed from finished cables shall conform to the following chemical requirements (percentages are shown by weight): Rubber Waxy hydrocarbons Total sulphur Free sulphur Carbon black Inorganic mineral fillers, organic accelerators, and ant
39、ioxidants Specific gravity Minimum 60 percent Maximum 3.3 percent Maximum 3 percent Maximum 1.2 percent Minimum 20 percent Remainder Minimum 1.12 3.4.1.2 Marking. The sheath shall be marked “Type DMU-MAGNETIC DEMOLITION CABLE.“ This marking, to be repeated at least once per foot, shall be reasonably
40、 permanent under all normal rough handling and storage conditions and shall be printed in contrasting color on the sheath along the entire length of the cable. The above sheath marking is in addition to the marking tape called for in 3.3.1. (* For application size number see 1.3.) 7 Provided by IHSN
41、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-l6839E(OS) 3.4.2 Qpe DNU. 3.4.2.1 Construction. Firs t. Second. Third. Fourth. Fifth. Sixth. Seventh. Aconductor of tin or tin-lead alloy coated cadmium bronze wire of 85 percent conductivity grade; 80,O pounds p
42、er square inch minimum tensile strength. Successive concentric lays to be of opposite hand. A separator (see MIL-C-915). A wall of natural rubber insulation (see 3.2.3). The rubber shall be color- coded for the identification of conductors. The choice of colors is optional. A rayon inner braid (see
43、MIL-C-915). Two conduptors, twisted together with a length of lay not greater than 3 inches, and a treated moisture-resistant jute filler free of excess wax (less than 2 percent extractable, the wax to be other than paraffin), to form an essentially round assembly. A binder braid over the assembly.
44、A natural rubber sheath. General composition-The rubber shall be in accordance with line call-out 4AA535A13C20EA14J of ASTM D 2000. The remainder of the compound shall consist of sulphuric, inorganic mineral fillers, carbon black, anti-oxidants, and organic accelerators. Chemical analysis-Sheathing
45、removed from finished cables shall conform to the following chemical requirements (percentages are shown by weight): Rubber Waxy hydrocarbons Total sulphur Free sulphur Carbon black Inorganic mineral fillers, organic accelerators, and antioxidants Specific gravity Minimum 60 percent Maximum 3.3 perc
46、ent Maximum 3 percent Maximum 1.2 percent Minimum 20 percent Remainder Minimum 1.12 3.4.2.2 Marking. The sheath shall be marked “Type DNU*-NONMAGNETIC DEMOLITION CABLE.“ This marking, to be repeated at least once per foot, shall be reasonably permanent under all normal rough handling and storage con
47、ditions and shall be printed in contrasting color on the sheath along the entire length of the cable. The above sheath marking is in addition to the marking tape called for in 3.3.1. (* For application size number see 1.3.) 8 Provided by IHSNot for ResaleNo reproduction or networking permitted witho
48、ut license from IHS-,-,- i MIL-C-Lb83E bl m 0b 0459285 7 m MIL-C- 16839E( OS) 3.43 Type DPU. 0 3.4.3.1 Construction. First. A conductor of coated copper wire in accordance with 3.2.1.1. Successive concentric lays to be of opposite hand. Second. A separator (see MIL-C-915). Third. A wall of Butyl rub
49、ber (see MILC-915). The rubber shall be color-coded for the identification of conductors. The choice of colors is optional. Fourth. Two conductors, twisted together with a length of lay not greater than 5 inches, and synthetic rubber fillers to form an essentially round assembly. Fifth. A binder braid over the assembly. Sixth. A polychloroprene sheath (see MIL-C-915). 3.4.4 Type MSU. 3.4.4.1 Construc
