1、INCH-POUNDProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHSMIL-DTL-13486E 8 May 2006 SUPERSEDING MIL-DTL-13486D 4 August 2000 DETAIL SPECIFICATION CABLES, SPECIAL PURPOSE, ELECTRICAL: LOW-TENSION, HEAVY-DUTY, SINGLE CONDUCTOR AND MULTIPLE CONDUCTOR, SHIELD
2、ED AND UNSHIELDED, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers two types (shielded and unshielded) of insulated, heavy-duty, single and multiconductor, electrical cables f
3、or use in low-tension circuits (see 6.1). 1.2 Classification. Cable is of the following types and classes, as specified (see 6.1 and 6.2): Type I Unshielded Type II Shielded Class A Single Conductor Class B Multiconductor 1.2.1 Size and arrangement of conductors. Cable is furnished in the size or co
4、mbination of sizes and arrangement of conductors shown on the applicable specification sheet or drawing (see 6.2). 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 ot
5、her sections of this specification or recommended for additional information or as examples. While every 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 specificat
6、ion, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards and 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 i
7、n the solicitation or contract. Comments, suggestions, or questions on this document should be addressed to: Defense Logistics Agency, Defense Supply Center, Columbus (DSCC-VAI), P.O. Box 3990, Columbus, OH 43218-3990 or email to WireCabledscc.dla.mil. Since contract information can change, you may
8、want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 6145 -,-,-MIL-DTL-13486E 2 FEDERAL STANDARD FED-STD-791 - Lubricants, Liquid Fuels, and Related Products; Methods of Testing COMMERCIAL ITEM DESCRIPTIONS A-A-59551 - Wi
9、re, Electrical, Copper (Uninsulated) A-A-52624 - Antifreeze, Multi Engine Type (Copies of these documents are available online at http:/assist.daps.dla.mil or http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 191
10、11-5094.) 2.3 Non-Government publications. The following documents 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. ASTM INTERNATIONAL ASTM G21 - Determining Resistance of Synthetic
11、 Polymeric Materials to Fungi (Copies of these documents 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.) 2.4 Order of precedence. In event of a conflict between the text of this document and the refer
12、ences cited herein (except for related 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 require
13、ments shall be as specified herein and 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 Qualification. Cables furnished under this specification shall be produc
14、ts that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.4 and 6.3). 3.3 Materials. 3.3.1 Strands. The individual conductor strands (see 6.4) shall be made of soft or drawn and annealed, coated, type S, solid copper wire con
15、forming to the applicable requirements of A-A-59551. The strands shall be coated as specified therein using any applicable material specified. 3.3.2 Insulation. The insulation shall be such as to meet the construction and performance requirements specified herein. Provided by IHSNot for ResaleNo rep
16、roduction or networking permitted without license from IHS-,-,-MIL-DTL-13486E 3 3.3.3 Tape or braid. The tape or braid shall be free from any substance that may have a deteriorating effect on the insulation or on the sheath (see 6.4). Further, the tape or braid shall not be adversely affected by the
17、 compounding ingredients of the insulation or sheath. 3.3.4 Sheath. The sheath shall be made of material that meets the performance requirements in 3.5.2 through 3.5.12. A polychloroprene-based material is preferred. 3.3.5 Shielding (type II only). The individual strands for the shielding (see 6.4)
18、shall be made of the same material as specified in 3.3.1 for the conductor strands. The American Wire Gage (AWG) size of the individual strands shall be 34. 3.3.6 Separator. The separator shall be made of a fungus resistant material that shall be free of any substance that would have a deteriorating
19、 effect on the insulation or conductor. Further, the separator itself shall not be adversely affected by compounding ingredients used in the cable construction or process. 3.3.7 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials
20、 should be used to the maximum extent possible, provided that the material meets or exceeds operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.4 Construction. Cable construction shall be in accordance with the applicable specification sheet for the P
21、art or Identifying Number (PIN) specified by the acquisition activity. The length of the cable shall be as specified in the specification sheet or as specified by the acquisition activity (see 6.2, 6.5, and 6.6). 3.4.1 Conductors. Conductors shall consist of individual strands that shall be free fro
22、m abrasion, kinks, and flats. The conductors shall be continuous throughout their length except joints in individual strands shall be in accordance with 3.4.1.3. The conductor shall be intact and in clean condition for soldering when the separator is stripped from it. 3.4.1.1 Cross section. The cros
23、s section of any conductor shall conform to the applicable requirements specified in table I. 3.4.1.2 Stranding. Stranding of the conductor shall be left or right-hand lay and, at the option of the contractor, may be bunched, concentric, or rope lay. When an uninsulated portion is cut, the stranding
24、 shall not tend to unlay and the completed conductor shall not tend to spread out. 3.4.1.3 Joints. 3.4.1.3.1 Sizes 0000 to 16. When the conductor is size 0000 to 16, joints shall be made by butt brazing or twisting strands together. Individual joints shall occur no closer together than one foot. In
25、no case shall the whole conductor be spliced at one point. 3.4.1.3.2 Sizes 18 and 20. When the conductor is size 18 or 20, joints shall be made by butt brazing. Individual joints shall be finished so that the conductor diameter is not increased at the point of brazing. Joints shall not occur closer
26、together than 10 feet. In no case shall the whole conductor be spliced at one point. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13486E 4 TABLE I. Construction requirements for conductors. Conductor size (AWG)Minimum area (circular mils)
27、Minimum number of strands Maximum diameter of stranded conductor (mils) 20 985 10 41.0 18 1,575 16 52.0 16 2,360 19 61.0 14 3,753 19 76.0 12 5,966 19 96.0 10 10,338 105 132.0 8 16,180 133 176.0 6 25,725 133 218.0 4 40,905 133 272.0 2 65,495 663 345.0 1 80,170 812 384.0 0 101,235 1,033 432.0 00 130,9
28、90 1,327 490.0 000 163,985 1,661 548.0 0000 207,715 2,104 615.0 3.4.2 Separator. A mechanical or chemical separator shall be applied between the conductor and the insulation to prevent deterioration of the insulating compound and to provide for its easy removal using commercial stripping procedures.
29、 3.4.3 Insulation. The insulating compound shall form a close fit over the separator without adherence. As applied, the compound shall be seamless and shall be free of any foreign material that, under an illumination of 15 to 25 foot-candles, would be visible to a person having 20/20 normal or corre
30、cted vision. 3.4.4 Shielding (type II only). Shielding of cables shall be in accordance with the applicable specification sheet. 3.4.4.1 Splices. Spliced strands shall not occur more than once in any 4 feet of cable length. Provided by IHSNot for ResaleNo reproduction or networking permitted without
31、 license from IHS-,-,-MIL-DTL-13486E 5 3.4.4.2 Coverage. The shielding shall provide not less than 85 percent coverage of the surface of the underlying cable components. Percent of coverage shall be calculated as follows: Percent of coverage = (2F-F2) 100 F =NDP (Cos angle of advance)Where: N = Numb
32、er of parallel strands between successive turns of a selected marker strand plus the selected strand. D = Diameter of a single strand. Angle of advance = Angle whose tangent equals P/C. P = Pitch of braid measured along the axis of the braid. C = 3.14 (Outside diameter (OD) of cable 2D). 3.4.4.3 Gro
33、unding of shielding (class B only). Shielded insulated conductors (see 6.4) of multiconductor cable shall be electrically connected in such a manner that grounding of the shielding of one insulated conductor will result in grounding of all shielding within the outer sheath. 3.4.5 Concentricity. The
34、minimum thickness of the cross section of the insulation around each conductor and of the cable sheath shall be at least .60 of the corresponding maximum wall thickness. 3.4.5.1 Wall thickness. The maximum wall thickness of an insulated conductor shall be the maximum distance between the inner and o
35、uter surfaces of the insulation when measured along a line through the center of the circle defined by the outer surface of the insulation. The minimum wall thickness of the insulation shall be a similar distance measured along the same line, on the opposite side of the conductor. 3.4.5.2 Wall thick
36、ness ratio. The ratio of the sheath minimum wall thickness shall be at least .60 of the corresponding maximum wall thickness. (This requirement does not apply to two-conductor cable.) 3.5 Performance. 3.5.1 Insulation flaws. Insulated conductors shall withstand the voltage specified in table II with
37、out breakdown. TABLE II. Voltage requirement for insulated conductors. Conductor size Voltage (V rms) 1/20 to 12 2,000 10 to 8 2,000 6 to 0000 3,000 1/ The frequency shall be 60 Hertz (Hz). 3.5.2 Finished cable flaws. Finished cables shall withstand the voltage specified in table III without breakdo
38、wn. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13486E 6 TABLE III. Voltage requirement for finished cables. Conductor size Voltage (V rms) 1/Class A cable 20 to 12 2,000 10 to 8 2,000 6 to 0000 3,000 Class B cable All sizes 1,000 1/ The
39、frequency shall be 60 Hz. 3.5.3 High voltage to ground. Cable shall withstand the voltage specified in table IV without grounding. TABLE IV. High voltage to ground voltage requirements. Conductor size Voltage (V rms) Class A cable 20 to 18 4,000 16 5,000 14 to 12 8,000 10 to 0000 10,000 Class B cabl
40、e All sizes 6,000 3.5.4 High voltage between insulated conductors (class B only). Cables shall withstand an alternating current voltage of 6,000V rms at 60 Hz between insulated conductors. 3.5.5 Fungus resistance. The cable shall be fungus resistant. After being exposed to fungus conforming to in AS
41、TM G21, the cable shall meet the requirements of 3.5.3 and no evidence of fungal growth (see 4.7.4.4). 3.5.6 High temperature resistance. The cable shall withstand 2502 degrees Fahrenheit (F) without breakdown of insulation or sheath. 3.5.7 Low temperature resistance. The cable shall withstand -653
42、F with no evidence of cracking, breaking, separation, or other damage. 3.5.8 Oil absorption. Cable components shall show no evidence of cracking, rupture, or other damage after immersion in oil at 158 F for 20 hours. For sizes 16 to 20, the outer diameter of the cable shall not swell more than 25% i
43、n excess of the original cable diameter. Other size cables shall not swell to more than 20% in excess of the original cable diameters. 3.5.9 Liquid immersion. The cable components shall evidence no cracking, rupture, or other damage after 20 hours of immersion in distilled water, a 5% (by weight) sa
44、lt water solution, or ethylene glycol conforming to A-A-52624. 3.5.10 Flammability. A flame, resulting from application of a gas flame to the cable, shall travel at a rate not exceeding one inch per minute. The cable surface shall not flame for more than one minute after the gas flame is withdrawn.
45、Burning particles shall not fall from the cable. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-13486E 7 3.5.11 Ozone resistance. The cable shall evidence no cracking, rupture, or other deterioration, when examined under 7-power magnificatio
46、n, after 300 hours of exposure to an ozone atmosphere in which the concentration of ozone is 505 parts of ozone per 100 million parts of air by volume and the temperature is 1005 F. 3.5.12 Longitudinal shifting (class B only). The longitudinal shifting of the insulated conductor shall be not greater
47、 than 0.125 inch (3.17 mm). 3.6 Color. 3.6.1 Insulation. 3.6.1.1 Class A. Color marking of single-conductor cable is not required. 3.6.1.2 Class B. The color of the insulation or cloth braiding of the insulated conductors of multi-conductor cable shall be in accordance with the applicable specificat
48、ion sheet or as specified by the procuring activity (see 6.2). Color coding shall be recognizable. 3.6.2 Sheath. Color of the sheath shall be black. 3.7 Finish. The cable shall have an even, smooth finish on the exterior surface. When the cable is wound on reels or coils or is piled, adjacent layers
49、 of the cable shall not adhere to each other. 3.8 Marking. The manufacturers name or trade mark, CAGE code, date of manufacture, military PIN (see 6.6), size, number of conductors, and the letters “OZ“ shall be clearly and legibly marked on the sheath at intervals of not more than 2 feet. If the cable is class B, the number of conduc
