1、 AMSC N/A FSC 6145 INCH-POUND MIL-DTL-27072E 9 November 2011 SUPERSEDING MIL-DTL-27072D 1 September 2006 DETAIL SPECIFICATION CABLE, POWER, ELECTRICAL AND CABLE, SPECIAL PURPOSE, ELECTRICAL, MULTICONDUCTOR AND SINGLE SHIELDED, GENERAL SPECIFICATION FOR This specification is approved for use by all D
2、epartments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers special purpose electrical multi-conductor and single shielded cable for electronic circuits where the cable will be protected in racks, tunnels, or within buildings, trailers, or equipment. Cables co
3、nstructed using polyvinyl chloride (PVC) on insulated wires or for fillers, tapes, or jackets are not to be used for aerospace applications. 1.2 Classification. 1.2.1 Part or Identifying Number (PIN). The PIN consists of the following form: M 27072/76 F A D A 9 Sheath color designator (see 3.3.2) Sh
4、eath material designator (see 1.2.1.1) Shield and jacket material designator (see table I) Basic wire specification designator (see table II) Basic wire size and stranding designator (see table III) Detail specification sheet number General specification number Prefix denotes an item covered by a sp
5、ecification that is defined in the inch-pound system (U.S.) 1.2.1.1 Cable sheath material designator. Cable sheath material designator using a single letter as follows: A Polyvinyl chloride (PVC) 1/ B Polyethylene (PE) D Fluorinated ethylene propylene (FEP) E Polytetrafluoroethylene (PTFE) 1/ PVC is
6、 not to be used in aerospace applications. Comments, suggestions, or questions on this document should be addressed to DLA Land and Maritime, ATTN: VAI, P.O. Box 3990, Columbus, Ohio 43218-3990, or email to WireCabledla.mil. Since contact information can change, you may want to verify the currency o
7、f this address information using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27072E 2 1.2.1.2 Shield and jacket undershield material designator. Cable shield and jacket undershield
8、 material designator using a single letter in accordance with table I. TABLE I. Shield and jacket undershield material designator. Shield material Jacket undershield material Unjacketed Polyamide PVC 1/No shield A E Z Tinned copper round C G K Silver-coated copper round D H L 1/ PVC is not to be use
9、d in aerospace applications. 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 exa
10、mples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of 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
11、, 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 in the solicitation or contract. FEDERAL STANDARD FED-STD-228 - Cable and Wire, In
12、sulated; Methods of Testing DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-I-631 - Insulation, Electrical, Synthetic-Resin Composition, Non-rigid MIL-DTL-16878/1 - Wire, Electrical, Type B, 105C, 600 Volts (Insulated, High Temperature) MIL-DTL-16878/17 - Wire, Electrical, Polyvinyl Chloride (PVC) Insulate
13、d, 105C, 600 Volts, Polyamide Jacket MIL-DTL-16878/18 - Wire, Electrical, Polyvinyl Chloride (PVC) Insulated, 105C, 1000 Volts, Polyamide Jacket (See supplement 1 for list of specification sheets.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-
14、DTL-27072E 3 DEPARTMENT OF DEFENSE STANDARD MIL-STD-686 - Cable and Cord, Electrical, Identification Marking and Color Coding of (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D
15、, Philadelphia, PA 19111-5094.) 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 in the solicitation or contract. ASTM INTERNATIONAL ASTM-B33 - Standa
16、rd Specification for Tinned Soft or Annealed Copper Wire for Electrical Purposes ASTM-B298 - Standard Specification for Silver-Coated Soft or Annealed Copper Wire ASTM-D2116 - Standard Specification for FEP-Fluorocarbon Molding and Extrusion Materials ASTM-D4066 - Standard Classification System for
17、Nylon Injection and Extrusion Materials (PA) ASTM-D4894 - Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials (Non-adopted NGS document) ASTM-D4796 - Standard Specification for Polyethelyne Plastics Molding and Extrusion Materials (Copies of these d
18、ocuments 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-Z540.1 - Calibration Laboratories and Measuring and Test Equipment, General Requirements (Copies of these documents are
19、 available online at http:/www.ncsli.org or from the National Conference of Standards Laboratories (NCSL), 2995 Wilderness Place, Suite 107, Boulder, CO 80301-5404.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27072E 4 NATIONAL ELECTRICAL
20、 MANUFACTURERS ASSOCIATION (NEMA) NEMA-HP3 - Electrical and Electronic PTFE (Polytetrafluoroethylene) Insulated High Temperature Hook-up Wire; Types ET (250 Volts), E (600 Volts), and EE (1000 Volts) (Copies of these documents are available online at http:/www.nema.org or from the National Electrica
21、l Manufacturers Association, 1300 North 17thStreet, Suite 1847, Rosslyn VA 22209.) SAE INTERNATIONAL SAE-AS22759/9 - Wire, Electric, Fluoropolymer-Insulated, Extruded TFE, Silver-Coated Copper Conductor, 1000-Volt SAE-AS22759/11 - Wire, Electric, Fluoropolymer-Insulated, Extruded TFE, Silver-Coated
22、Copper Conductor, 600-Volt (Copies of these documents are available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.) 2.4 Order of precedence. Unless otherwise noted herein or in the contr
23、act, in the event of a conflict between the text of this document and the references 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
24、obtained. 3. REQUIREMENTS 3.1. Specification sheets. The individual item requirements 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 gove
25、rn. 3.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advant
26、ageous life cycle costs. 3.3 Materials. 3.3.1 Basic wire. The basic wires shall conform to the requirements of the specifications listed in table II. See table A-I for a cross-reference of current basic wire designator to former basic wire designator. Provided by IHSNot for ResaleNo reproduction or
27、networking permitted without license from IHS-,-,-MIL-DTL-27072E 5 TABLE II. Basic wire specification designator. Basic wire specification designator Basic wire specification A 1/MIL-DTL-16878/17 B 1/MIL-DTL-16878/18 D 2/ SAE-AS22759/11, SAE-AS22759/9, or NEMA-HP3 E 2/ SAE-AS22759/9 or NEMA-HP3 P 1/
28、MIL-DTL-16878/1 1/ PVC shall not be used in aerospace applications. 2/ See specification sheet for basic wire. 3.3.1.1 Basic wire gauge and stranding. The basic wires shall conform to the size and stranding specified in table III. TABLE III. Basic wire size and stranding designator. Size and strandi
29、ng designator Conductor Size AWG Number of strands Strand size AWG Size and stranding designator Conductor size AWG Number of strands Strand size AWG D 12 19 25 K 20 7 28 F 16 19 29 L 22 19 34 G 18 19 30 M 1/22 7 30 H 1/18 7 26 S 1/, 2/26 7 34 J 20 19 32 - - - - 1/Inactivefor new design stranding. 2
30、/Inactivefor new design wire size. 3.3.1.2 Basic wire identification coding. Unless otherwise specified in individual specification sheets, the individual wires shall be coded for their entire length in accordance with MIL-STD-686. The standard means of coding shall be solid-colored insulation (see
31、3.3.1.3), with colored stripe tracer (see 3.3.1.4). 3.3.1.3 Solid-colored insulation. Cables having six wires or less shall employ solid coloring and each wire shall be clearly distinguishable. The entire thickness of the insulation shall be solid-colored. 3.3.1.4 Helical stripe tracer. Cables havin
32、g more than six wires shall employ solid coloring in the first six wires and shall utilize a colored helical stripe tracer on the seventh wire and above. Where extruded polyamide jackets are used over the primary insulation, the helical stripe tracer may be applied to the underlying insulation or to
33、 the surface of the polyamide jacket. 3.3.1.4.1 Ink. The colored helical stripe shall be obtained by using nonconductive, permanent inks having pigments or dyes that are least affected by light, by plasticizers incorporated in the insulation, and by the temperature allowed by the basic wire. The med
34、ium used shall provide good anchorage to the insulation. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27072E 6 3.3.1.4.2 Width and length of lay. The stripe width and length of lay shall be in accordance with MIL-STD-686. 3.3.2 Sheath colo
35、r and stripe or band. Unless otherwise specified in the solicitation or order (see 6.2 ), cable sheath and stripe or band color shall be in accordance with MIL-STD-686. The sheath stripe or band color designation shall be in accordance with table IV. Cable sheath material shall be of a contrasting c
36、olor to the stripe or band. 3.3.3 Fillers. Where fillers are used, the fillers shall be either: a. Foamed or solid polyethylene in accordance with ASTM-D4796, class II, grade 4. b. PVC in accordance with MIL-I-631, type F, grade C. c. PTFE in accordance with ASTM-D4894. 3.3.3.1 Fibrous fillers. Fibr
37、ous fillers shall not be used. TABLE IV. Sheath color and stripe or band color designator. Color designator Sheath color First stripe or band Color Designator Sheath color First stripe or band 0 Black G Black Violet 1 Brown H Black Gray 2 Red J Brown Red 3 Orange K Brown Orange 4 Yellow L Brown Yell
38、ow 5 Green M Brown Green 6 Blue N Brown Blue 7 Violet P Brown Violet 8 Gray R Brown Gray 9 White S Red Orange A Black Brown T Red Yellow B Black Red U Red Green C Black Orange W Red Blue D Black Yellow Y Red Violet E Black Green X Unstriped 1/ F Black Blue Z Clear 2/ 1/ Inactive for new design. For
39、new design, use color designator 0 through 9 for unstriped solid color sheath. 2/ Applicable only to cable sheaths made of FEP. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27072E 7 3.3.4 Binder tape. Where binder tape is specified in the
40、applicable specification sheet, the tape shall be one of the following materials: a. Polyethylene terephthalate film conforming to MIL-I-631, type G, in thickness of .001 inch (.025 mm) minimum. b. PVC film conforming to MIL-I-631, type F, grade A, in thickness of .005 to .010 inch (.013 to .254 mm)
41、 c. PE film conforming to ASTM-D4796, class II, grade 4, in thickness of .005 to .010 inch (.013 to .254 mm). d. Polyester 3.3.4.1 Optional use of binder tape. When binder tape is not specified on a specification sheet, binder tape may be applied at the manufacturers option. If used, the binder tape
42、 shall be one of the materials specified in 3.3.4. 3.3.5 Overall shielding. Where tinned copper strands are specified (see table I), the strands shall conform to ASTM-B33 before shielding. Where silver-coated copper strands are specified (see table I), the strands shall conform to ASTM-B298 before s
43、hielding. 3.3.6 Component jackets. When construction includes jacketed components (see 3.5.3), the jackets shall be one of the following materials: a. Polyamide in accordance with ASTM-D4066, type PA622, grade E22. b. PVC in accordance with sheath PVC requirements of 3.3.7a. 3.3.7 Cable sheaths. Cab
44、le sheaths shall be one of the following materials: a. PVC in accordance with table V and the cold bend requirements specified in 3.7.3. b. PE in accordance with ASTM-D4796, class III, grade 2. c. FEP in accordance with ASTM-D2116. d. PTFE in accordance with ASTM-D4894. 3.3.7.1 Physical properties.
45、Physical properties of the sheath shall be in accordance with table V. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27072E 8 TABLE V. Sheath physical properties. Inspection Sheath material designator (see 1.2.1.1) A B D E Original tensile
46、strength (PSI) (min) 2100-2700 1800 2200 3000 Original ultimate elongation percent (min) 250-350 250 200 150 Tensile strength after aging 1/ 75% of original - - - Ultimate elongation after aging 1/75% of original - - - 1/ After accelerated aging (see 4.3.2.3). 3.3.8 Insulation. Insulation, if requir
47、ed, shall be as specified on the applicable specification sheet. 3.4 Components. The cable may include components such as: a. Shielded single conductors, shielded twisted pairs, shielded twisted triplets, etc. Unless otherwise specified in the applicable specification sheet, all shielded components
48、shall be insulated by a component jacket, applied over the shield, to prevent electrical noise and stray ground currents. b. Nonshielded twisted pairs, twisted triplets, etc. When specified in the applicable specification sheet, a component jacket shall be applied over the twisted assembly. 3.5 Desi
49、gn and construction. 3.5.1 Component twisting (cable lay). Twisted components of the finished cable after being laid up shall have no residual twist on the individual wires. The length of lay shall be between 8 and 16 times the pitch diameter of the layer in the component. Fillers may be used, as needed, to permit compliance with the roundness requirements specifie
