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1、 INCH-POUND MIL-DTL-28830D 18 July 2005 SUPERSEDING MIL-C-28830C 22 August 1994 DETAIL SPECIFICATION CABLE, RADIO FREQUENCY, COAXIAL, SEMIRIGID, CORRUGATED OUTER CONDUCTOR, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense.
2、1. SCOPE 1.1 Scope. This specification covers the general requirements for coaxial, semirigid, radio frequency cable with corrugated outer copper conductors (see 6.1). 1.2 Classification. 1.2.1 Part or Identifying Number (PIN). The term PIN is equivalent to the term part number which was previously
3、used in this specification. The PIN (when applicable) consists of the letter “M”, the basic number of the specification sheet, and an assigned dash number (see 3.1), as shown in the following example: M 28830/1 I Dash designation (see 1.2.1.1 and 3.1) Specification sheet number Military designator A
4、MSC N/A FSC 6145 MIL-DTL-28830D 2 1.2.1.1 Jacket material. Jacket material is as specified in the specification sheet (see 3.1) and as follows: Type I Unjacketed. Type II Jacketed (polyethylene). Type IV Jacketed (non-halogenated fire-retardant compound). 2. APPLICABLE DOCUMENTS 2.1 General. The doc
5、uments 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 every effort has been made to ensure the completeness of thi
6、s list, document users are cautioned that they must meet all specified requirements 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 handbooks. The following specifications, standards and handbooks form
7、 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 STANDARDS FED-STD-228 - Cable and Wire, Insulated, Methods of Testing. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-C-17 - Cables, R
8、adio Frequency, Flexible and Semirigid, General Specification for. (See supplement 1 for list of associated specifications.) (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Documents Order Desk, 700 Ro
9、bbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these doc
10、uments are those cited in the solicitation or contract. NAVAL ENGINEERING STANDARDS (NES) NES 711 - Determination of the Smoke Index of the Products of Combustion from Small Specimens of Materials. NES 713 - Determination of the Toxicity Index of the Products of Combustion from Small Specimens of Ma
11、terials. (Copies of these documents should be addressed to the Procurement Executive, Ministry of Defense, Ship Department, Section TE112, Block G, Foxhill, Bath 5AB, England.) -,-,- MIL-DTL-28830D 3 2.3 Non-Government publications. The following documents form a part of this document to the extent
12、specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM B152 - Copper Sheet, Strip, Plate, and Rolled Bar, Standard Specification for. ASTM B566 - Copper-Clad Aluminum Wire, Standard Specification for ASTM D
13、638 - Tensile Properties of Plastic. ASTM D1248 - Polyethylene Plastics Extrusion Materials for Wire and Cable. ASTM D1505 - Density of Plastics by the Density-Gradient Technique, Standard Test Method for. ASTM D2863 - Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of P
14、lastics (Oxygen Index), Standard Test Method for. (Copies of these documents are available from http:/www.astm.org or ASTM International, P.O. Box C700, 100 Barr Harbor Dr., West Conshohocken, PA 19428-2959.) INTERNATIONAL STANDARDS ORGANIZATION (ISO) ISO 9000 - Quality Management Systems-Fundamenta
15、ls and Vocabulary. (Copies of these documents are available from http:/www.iso.ch or International Organization for Standardization American National Standards Institute, 11 West 42nd Street, 13th floor, New York, NY 10036.) 2.4 Order of precedence. In the event of a conflict between the text of thi
16、s 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 obtained. 3. REQUIREMENTS 3.1 Specification sheets. The
17、 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 govern. 3.2 Qualification. Cables furnished under this speci
18、fication shall be products which are authorized by the qualifying activity for listing on the applicable qualified products lists before contract award (see 4.6 and 6.3). -,-,- MIL-DTL-28830D 4 3.3 Material. Unless otherwise specified (see 3.1), materials for the principle components of the cable sh
19、all be as specified herein. Prior approval to use substitute material must be obtained from the qualifying activity. However, when a definite material is not specified, a material shall be used which will enable the finished product to meet the performance requirements of this specification. Accepta
20、nce or approval of any constituent material shall not be construed as a guarantee of the acceptance of the finished product. 3.3.1 Virgin material. For purposes of this specification, virgin material shall be 100 percent new material which has been through only the processes essential to its manufac
21、ture and its application to the finished cable and which has been through these essential processes one time only. Any material which has been previously been processed in any other manner is considered non-virgin material. This requirement shall apply to the manufacture of all ingredients and compo
22、nents used. 3.3.2 Copper-clad aluminum. Copper-clad aluminum wire shall be in accordance with ASTM B566 (see 4.2). 3.3.3 Copper. Copper strip shall be UNS C12000 in accordance with ASTM B152 (see 4.2). 3.3.4 Foam polyethylene. Foam polyethylene shall be in accordance with ASTM D1248, type I, class A
23、 or B (see 4.2). Vendor blends are acceptable if their dissipation factor is less than 0.0003. 3.3.5 Polyethylene. Polyethylene shall be in accordance with ASTM D1248, type I, W4 (see 4.2). 3.3.6 Non-halogenated fire-retardant compound. The property values of the non-halogenated fire- retardant comp
24、ound shall be as specified in the applicable specification sheet (see 3.1), when tested as specified in accordance with the corresponding testing method of table I. TABLE I. Non-halogenated fire retardant compound properties. Property Test method Density Tensile strength Ultimate elongation Oxygen i
25、ndex Temperature index Smoke index Toxicity index Halogen content Acid gas generation ASTM D1505 ASTM D638 ASTM D638 ASTM D2863 ASTM D2863 NES 711 NES 713 MIL-C-17 MIL-C-17 3.4 Design and construction. The cables shall be of the design, construction, and physical dimensions specified (see 3.1). 3.4.
26、1 Splices. Each specified length of cable (see 6.2) shall be electrically and mechanically continuous. No cable splices shall be allowed after fabrication of the cable. 3.4.2 Dimensional errors and tolerances. The cumulative dimensional errors shall not result in the cables failing the voltage stand
27、ing wave ratio (VSWR) test. MIL-DTL-28830D 5 3.5 Performance. 3.5.1 Continuity. When tested as specified in 4.7.2, each conductor in each reel of cable shall be electrically continuous between ends. 3.5.2 Dielectric withstanding voltage. When tested as specified in 4.7.3, the completed cable shall w
28、ithstand the voltage specified (see 3.1) without breakdown. 3.5.3 Spark test (jacketed cable only). When tested as specified in 4.7.4, jacketed cable shall have a continuous jacket without cracks, breaks, or holes. A puncture of the jacket by the applied voltage shall constitute a point of failure (
29、see 3.1). 3.5.4 Insulation resistance. When tested as specified in 4.7.5, the insulation resistance shall be not less than 100,000 megohms per 1,000 feet (305 meters). 3.5.5 Leak test (type 1). When tested as specified in 4.7.6, the cable shall not increase in capacitance by more than 5 percent of t
30、he initial capacitance. 3.5.6 Attenuation. When tested as specified in 4.7.7, the attenuation in decibels (dB) per 100 feet (30 meters) shall not exceed the maximum values specified (see 3.1). 3.5.7 Velocity of propagation. When tested as specified in 4.7.8, the velocity of propagation shall be as s
31、pecified (see 3.1). 3.5.8 Capacitance. When tested as specified in 4.7.9 , the cable capacitance shall be as specified (see 3.1). 3.5.9 Impedance. When tested as specified in 4.7.10, the impedance of the cable shall be as specified (see 3.1). 3.5.10 VSWR. When tested as specified in 4.7.11, the cabl
32、e shall have a maximum VSWR as specified, with respect to a 50 2 ohm termination, over the frequency range specified (see 3.1). 3.5.11 Cold bend (jacketed cable only). When tested as specified in 4.7.12, the cable jackets shall show no evidence of cracking or splitting. 3.5.12 Flexibility. When test
33、ed as specified in 4.7.13, the finished cable shall not exhibit kinking, wrinkling, or cracking. The cable shall then meet the requirements of 3.5.5 and 3.5.10 (see 3.1). 3.5.13 Temperature cycling. When tested as specified in 4.7.14, the cable shall exhibit no evidence of mechanical damage. 3.5.14
34、Thermal shock. When tested as specified in 4.7.15, there shall be no physical damage to any dielectric material and the change in dimensions from the original shall be .062 inch (1.57 mm) maximum for the center conductor and .125 inch (3.18 mm) maximum for the dielectric material. 3.5.15 Flame propa
35、gation (type IV jacketed cable only) (see 3.1). When tested as specified in 4.7.17, samples of completed cable shall be self-extinguishing and shall not burn to the top of the tray. -,-,- MIL-DTL-28830D 6 3.5.16 Acid gas generation (type IV jacketed cable only). When cables are tested as specified i
36、n 4.7.18, the acid equivalent shall not exceed the percentage, by weight of the sample, specified (see 3.1). 3.5.17 Halogen content (type IV jacketed cable only). When cables are tested as specified in 4.7.19, the halogen content shall not be greater than the value specified (see 3.1). 3.5.18 Smoke
37、index (type IV jacketed cable only). When cables are tested as specified in 4.7.20, the smoke index shall not be greater than the value specified (see 3.1). 3.5.19 Toxicity index (type IV jacketed cable only). When cables are tested as specified in 4.7.21, the toxicity index shall not be greater tha
38、n the value specified (see 3.1). 3.5.20 Tensile strength and elongation (unaged). When tested as specified in 4.7.22, the cable jacket shall have a tensile strength and elongation not less than the value specified (see 3.1) 3.6 Marking. Unless otherwise specified (see 3.1), marking shall consist of
39、the PIN, manufacturers CAGE code in accordance with publication H4/H8 (see 1.2.1 ), and the date of manufacture. Lettering shall be Futura or Gothic capitals and numerals shall be Arabic. Marking shall be on the outermost insulation (or cable) surface and shall be at intervals of every 3.3 feet (1 m
40、eter) measured from the beginning of one complete marking to the beginning of the succeeding complete marking. Marking of the unjacketed cable shall be specified by the procuring activity (see 6.2). 3.7 Workmanship. Cables shall be processed in such a manner as to be uniform in quality and shall be
41、free from any burrs, die marks, chatter marks, foreign material, or other defects that will adversely affect life, serviceability, or appearance. 3.8 Continuous lengths (see 4.7.16). Unless otherwise specified in the contract or order, the footage of the individual continuous lengths in each spool o
42、r reel shall be marked on the spool or reel in the sequence in which the lengths will be unwound by the user. The minimum footage of each continuous length of cable in the inspection lot (see 4.6.1.1) shall conform to table II, which specifies the total number of inspection lot cable lengths which m
43、ay be provided by cable lengths of various minimum footages, in terms of percentage. 3.9 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 excee
44、ds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. TABLE II. Continuous lengths. Minimum footage Minimum percentage 100 feet (30.5 meters) 75 feet (23 meters) 50 feet (15 meters) 50 percent 80 percent 100 percent -,-,- MIL-DTL-28830D 7 4. VERIFI
45、CATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. Materials inspection (see 4.2). b. Qualification inspection (see 4.5 ). c. Conformance inspections (see 4.6). 4.2 Materials inspection. Materials inspection shall consist of certifica
46、tion supported by verifying data that the materials listed in table III, used in fabricating, are in accordance with the applicable referenced specifications or requirements prior to such fabrication. TABLE III. Materials inspection. Material Requirement paragraph Applicable specification Copper-cla
47、d aluminum Phosphor reduced copper Polyethylene foam Polyethylene Non-halogenated fire-retardant compound 3.3.2 3.3.3 3.3.4 3.3.5 3.3.6 ASTM B566 ASTM B152 ASTM D1248 or vendor blend with dissipation factor 0.0003 ASTM D1248 In accordance with 3.3.6 4.3 Inspection conditions. Unless otherwise specif
48、ied herein, all inspections shall be performed in accordance with the test conditions specified in section 6 of FED-STD-228. 4.4 Inspection terms and definitions. Inspection terms and definitions shall conform to ISO 9000 with the following additions. 4.4.1 Specimen. A specimen is an individual piec
49、e of cable taken from a sample unit. 4.4.2 Sample unit. The sample unit shall be as specified. 4.4.3 Defective unit. A defective unit shall be a sample unit which failed to meet the requirements of the specification. 4.5 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable to the Government (see 6.3) on sample units produced with equipment