1、 AMSC N/A FSC 6145 INCH-POUND MIL-DTL-13777K 14 June 2010 SUPERSEDING MIL-DTL-13777J 4 May 2009 DETAIL SPECIFICATION CABLE, SPECIAL PURPOSE, ELECTRICAL, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope6.
2、1. This specification covers flexible, portable multi-conductor cables for interconnecting various units of complex weapons systems where voltages do not exceed 600 Vrms (see ). 1.2 Classification. 1.2.1 Part or Identifying Number (PIN). The PIN consists of the following: M13777/1- S 16 S 1375 C Spe
3、cification sheet number (1.2.1.1) Cable shield (1.2.1.2) Number of conductors (1.2.1.3) Nominal cable diameter (1.2.1.4) Conductor shield (1.2.1.5) Coaxial conductor (see 1.2.1.6) 1.2.1.1 Specification sheet number. The specification sheet number designation consists of the prefix M, followed by the
4、 basic specification number, a slash, the specification sheet number, and a dash. 1.2.1.2 Cable shield. When the letter S precedes the number of conductors, an overall shield under the sheath is indicated. 1.2.1.3 Number of conductors. The first two digits denote the number of individual conductors
5、comprising the cable. 1.2.1.4 Nominal cable diameter. The following four digits denote the nominal cable diameter in mils (thousandths of an inch). 1.2.1.5 Conductor shield. When the letter S follows the digits, individual conductor shields are indicated. 1.2.1.6 Coaxial conductor. The letter C at t
6、he end of the type designation denotes that the cable contains one or more coaxial conductors. Comments, suggestions, or questions on this document should be addressed to Defense Supply Center Columbus, ATTN: DSCC-VAI, P.O. Box 3990, Columbus, Ohio 43218-3990, or email to WireCabledla.mil. Since con
7、tact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. Inactive for new design after 1 June 1998. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
8、L-DTL-13777K 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While e
9、very effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and
10、handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATION L-P-390 - Plastic, Molding and Extrusion Mat
11、erial, Polyethylene and Copolymers (Low, Medium and High Density) FEDERAL STANDARDS FED-STD-228 - Cable and Wire, Insulated; Methods of Testing FED-STD-601 - Rubber, Sampling and Testing COMMERCIAL ITEM DESCRIPTION A-A-59551 - Wire, Electrical, Copper (Uninsulated) DEPARTMENT OF DEFENSE SPECIFICATIO
12、NS MIL-DTL-17 - Cables, Radio Frequency, Flexible and Semi rigid, General Specification For MIL-I-631 - Insulation, Electrical, Synthetic-Resin Composition, Nonrigid (See Assist database for list of specification sheets.) DEPARTMENT OF DEFENSE STANDARDS MIL-STD-104 - Limits for Electrical Insulation
13、 Colors MIL-STD-810 - Environmental Engineering Considerations and Laboratory Tests MIL-STD-2223 - Test Methods for Insulated Electric Wire (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue,
14、Building 4D, Philadelphia, PA 19111-5094.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13777K 3 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specifi
15、ed, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM-A313/A313M - Wire Stainless Steel Spring ASTM D1149 - Rubber Deterioration-Surface Ozone Cracking in a Chamber ASTM D4066 - Nylon Injection and Extrusion Materials (PA) (Copies of these documen
16、ts are available online at http:/www.astm.org or from the ASTM International, P.O. Box C700, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) NCSL INTERNATIONAL NCSL Z540.3 - General Requirements for Calibration of Measuring and Test Equipment (Copies of these documents are available online
17、 at http:/www.ncsli.org or from NCSL International 2995 Wilderness Place, Suite 107 Boulder, Colorado 80301-5404.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein (except for relat
18、ed specification sheets), 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 Specification sheets. The individual item requirements shall be as specified herein an
19、d in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. 3.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally prefera
20、ble materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.3 Qualification4. The cables furnished under this specification shall be products that are
21、 authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4 and 6.2). 3.4. Materials. The material shall be as specified and when not specifically described, shall meet the performance characteristics specified herein. 3.5 Wire. Each wire
22、 shall consist of a conductor covered with insulating material, insulation jackets and shields as required. 3.5.1 Conductor3.5.1.2. Each conductor shall be composed of an assembly of coated copper strands, and when specifically required, reinforcing steel strands (see ). Conductor sizes 20 AWG throu
23、gh 12 AWG shall be constructed with concentric lay conductors and shall comply with the requirements listed in table I. Concentric lay shall be interpreted to be a central core surrounded by one or more layers of helically wound strands. The direction of lay for the successive layers shall be altern
24、ately reversed (true concentric lay) or in the same direction (unidirectional lay). If the direction of lay for the successive layers is the same, the pitch or length of lay shall increase with each successive layer. Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
25、e from IHS-,-,-MIL-DTL-13777K 4 TABLE I. Conductor construction and maximum resistance valuesConductor . AWG size Conductor construction copper strands Maximum conductor resistance (Ohms per 1000 feet) Number Size (AWG) Tin Coated 0000 427 23 .0562 000 259 22 .0718 00 259 23 .0896 0 259 24 0.113 1 2
26、59 25 0.143 2 259 26 0.180 4 133 25 0.283 6 133 27 0.450 8 133 29 0.710 9 133 30 0.914 10 104 30 1.25 12 19 25 1.99 13 19 26 2.43 14 19 27 3.05 15 19 28 3.88 16 19 29 4.82 18 16+3SS 30 7.38 20 16+3SS 32 11.60 3.5.1.1 Copper strands4.8.1.1. The copper strands shall be soft annealed, commercially pure
27、 copper, free from splints, flaws, or other imperfections. Each strand shall be drawn and annealed so that strands taken from the completed cable conform to the values given below. Tests shall be in accordance with . Elongation (in 10 inches) 10 Minimum % 3.5.1.2 Conductor reinforcement3. Insulated
28、conductors of 18 size and smaller as specified shall be reinforced by the addition of steel strands (SS), spring temper, stainless steel wire meeting the requirements of ASTM-A313/A313M in accordance with table I and in the applicable specification sheet. Stainless steel strands shall be the same si
29、ze as the copper stranding and shall be positioned at the center core or in the core and the first grouping surrounding the center core. 3.5.1.3 Coating4.8.1.2. Copper strands shall be tin coated unless otherwise specified. Steel strands shall be coated. Conductors shall be tested for coating in acc
30、ordance with . Coaxial member strands shall be coated as specified in MIL-DTL-17 or in the applicable specification sheet. 3.5.1.4 Conductor resistancetable I. The resistance in ohms per 1000 feet at 68F for tin coated conductors shall not exceed the values listed in when tested in accordance with 4
31、.8.1.3. 3.5.1.5 Joints. There shall be no slices or joints in the conductor as a whole. Not more than one of the strands in a concentric conductor of 19 strands or less shall be spliced in any one linear foot of the conductor. In rope stranded conductors the primary groups used in forming the rope s
32、hall be considered the equivalent of a solid strand in concentric stranded conductors. In the case of bunch stranded conductors, a group of individual strands not exceeding 10 percent of the total number of strands comprising the conductor may be considered as a primary group. Such a group may be tr
33、eated on the same basis as set forth for the primary group of a rope stranded conductor. In all cases, splices or joints shall be so constructed and distributed throughout the conductor that its diameter and resistance will not be adversely affected and its performance in finished cable shall insure
34、 compliance with requirements specified herein. 3.5.2 Insulation compoundL-P-390. There shall be applied overt the conductor a well centered virgin polyethylene material in accordance with , type II, class L, grade 3 or 4 and meeting the requirements of table II when tested in accordance with 4.8.2.
35、1. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13777K 5 3.5.2.1 Accelerated aging 4.8.2.2. When tested in accordance with , the insulation compound shall meet the properties in table II. TABLE II. Accelerated aging propertieProperty s. Ul
36、timate elongation (min) inches 2-7 Tensile strength (min) psi 1400 After aging Depreciation in tensile strength (%) max. 25 Depreciation in elongation (%) max 25 3.5.2.2 Shrinkage4.8.2.2.2. The shrink back of the insulation form either ends of the conductor shall not exceed .0625 inch (1.59 mm) and
37、there shall be no evidence of end splitting or cracking when tested in accordance with . 3.5.3 Electrical properties. 3.5.3.1 Electrode spark test4.8.2.4.1. At the option of the manufacturer, the conductors shall be subjected to the spark test of to assure that cracks, pinholes and similar defects d
38、o not exist in the insulation. The spark test voltages shall be as specified in the applicable specification sheet. 3.5.3.2 Voltage breakdown (primary insulation)4.8.2.5.1.1. Prior to final cabling, 100 percent of all insulted conductors shall show no evidence of breakdown when tested in accordance
39、with at the minimum tank test voltages specified in table III. At the option of the manufacturer, the impulse dielectric test of 4.8.2.5.1.2 may be substituted for the tank test at the minimum impulse dielectric test voltages specified below without evidence of breakdown. TABLE III. Minimum tank tes
40、t voltageAWG size s. 1 minute tank test voltage Impulse dielectric test voltage (kilovolts peak) 20-10 2000 10.0 kVp 8-2 3000 12.5 kVp 1-4/0 4000 15.0 kVp 3.5.3.3 Water absorption4.8.2.4.1.3. The increase in capacitance of the insulation compound together with the nylon covering on all sizes 12 AWG
41、and smaller shall not exceed 3 percent when tested in accordance with . The total capacitance reading on insulated conductors 18 AWG and smaller shall not exceed 110 pF per foot at the completion of the 8-day test. 3.5.3.4 Coaxial members. 3.5.3.4.1 Capacitance4.8.2.5.2. The capacitance of coaxial c
42、onductors shall be as specified in the applicable specification sheet when cables are tested in accordance with . 3.5.3.4.2 Attenuation4.8.2.5. The maximum attenuation of coaxial conductors shall be as specified in the applicable specification sheet when cables are tested in accordance with 3. 3.5.3
43、.4.3 Impedance4.8.2.5. The impedance of coaxial conductors shall be as specified in the applicable specification sheet when cables are tested in accordance with 4. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13777K 6 3.5.4 Polyamide cover
44、ingaccordance with . An extruded, clear, heat stabilized polyamide jacket with a minimum 0.003 inch (.08 mm) average wall thickness shall be extruded over all sizes 12 AWG and smaller. Polyamide shall be in ASTM D4066, composition A, type III, low water absorption, class E and shall conform to the h
45、eat stability test of 4.8.2.3.1 without evidence of cracks or tears. Sizes 10 AWG and larger shall require no covering. 3.5.5 Color code6.2. Each insulated conductor shall be color coded in accordance with the applicable specification sheet. The insulation shall be the base color. When specifically
46、specified, all white color coding may be used or natural colored insulation material with stripes (see ). Limits for colored insulation shall be in accordance with MIL-STD-104. 3.5.5.1 Color coding of polyamide covering3.5.5.2. Where extruded polyamide coverings are used, color identification shall
47、be by means of helical stripes applied in the same direction over the polyamide. All materials used for striping shall be nonconductive. When the insulating compound is colored for the base color, two colored traces shall be used when applicable with the wider stripe indicating the first tracer. Whe
48、n natural color indulation is used as the insulation compound, the base color shall be indicated by an added base stripe (see ). 3.5.5.1.1 Surface resistance4.8.2.4.2. The surface resistance of the covered insulated black striped conductors shall be 10 megohm-inches (min) initial and final values wh
49、en tested in accordance with . 3.5.5.2 Stripe width. The width of the base color stripe (when applicable) shall not be less than 0.045 inch (1.14 mm). The first tracer shall not be less than 0.031 inch (.79 mm) and the second tracer if required shall not be less than 0.015 inch (.38 mm). All dimensions are perpendicular to the axis of the stripe. 3.5.5.3 Length of lay. The length of lay of the colored stripes shall conform to
