1、 MIL-DTL-22438C 2 May 2012 SUPERSEDING MIL-P-22438B 10 May 1977 DETAIL SPECIFICATION PANELS, RECEPTACLE, FOR ELECTRICAL AND ELECTRONICS TEST AND MAINTENANCE TABLE, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE
2、1.1 Scope. This specification covers the general requirements for electrical and electronic test and maintenance table receptacle panels. 1.2 Part or Identifying Number (PIN). The PIN will consist of the letter “M”, the basic number of the specification sheet, and an assigned dash number (see 3.1),
3、as shown in the following example: M 22438/1 -001 Designator Specification Dash number sheet number (see 3.1 for details) 1.3 Classification. Panels will be of the types specified in the individual specification sheets (see 3.1). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this sect
4、ion are specified in sections 3 and 4 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 this list, document users are ca
5、utioned that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed. AMSC N/A FSC 6110 INCH-POUND Comments, suggestions or questions on this document should be addressed to DLA Land and Maritime, ATTN: VAT, Post Office B
6、ox 3990, Columbus, OH 43218-3990, or emailed to CircuitProtectdla.mil. Since contact 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 18 July 1997 Provided by IHSNot
7、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-22438C 2 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 otherwi
8、se specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). FEDERAL SPECIFICATIONS W-C-596 - Connector, Electrical, Power, General Specification for. W-C-596/12 - Connector, Receptacle, Electrical, General Purpose, Duplex, General Grade and Hospital Grade,
9、Grounding, 2 Pole, 3 Wire, Three 15 Amperes, 125 Volts. 50/60 Hertz. FEDERAL STANDARDS FED-STD-H28 - Screw-Thread Standards for Federal Services. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-S-901 - Shock Test, H.I. (High-Impact); Shipboard Machinery, Equipment and Systems Requirements for. MIL-E-917 -
10、Electric Power Equipment, Basic Requirements For (Navy Shipboard Use). MIL-DTL-2726 - Receptacles, Receptacle Plugs, Switch and Receptacles, and Outlets (Electrical), General Specification for. MIL-DTL-15024 - Plates, Tags and Bands for Identification of Equipment. MIL-DTL-15024/5 - Plates, Identifi
11、cation. MIL-DTL-15090 - Enamel, Equipment, Light Gray (Formula No. 111). DOD-P-15328 - Primer, (Wash) Pretreatment Blue (Formula No. 117-B for Metals). MIL-DTL-16377 - Fixtures, Lighting; ans Associated Parts Shipboard Use, General Specification for. MIL-P-22438/1 - Panel, Receptacle, Electrical and
12、 Electronic (Symbol no. 754.2. MIL-P-22438/2 - Panel, Receptacle, Enclosed, Electrical and Electronic (Symbol no. 755.3). DEPARTMENT OF DEFENSE STANDARDS MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment (Type I Environmental and Type II Internally Excited). MIL-STD-202 - Test Methods for
13、 Electronic and Electrical Component Parts. (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, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following docume
14、nts 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 (see 6.2). NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA) NEMA PB1 - Panelboards. (A Copy of this document is available fro
15、m http:/www.nema.org/ or from 1300 North 17thStreet, Suite 1752, Rosslyn, VA 22209). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-22438C 3 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SAE AS50151 - Connectors, Electrical, Circular Thr
16、eaded, AN Type, General Specification For. (Copies of this document are available at http:/www.sae.org/ or from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001). 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein
17、 (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 requirements shall be as
18、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 First article When specified (see 6.2), the contractor shall furnish one receptacle panel
19、for first article inspection and approval (see 4.4 and 6.3). 3.3 Material. The material for each part shall be as specified herein. However, when a definite material is not specified, a material shall be used which will enable the receptacle panels to meet the performance requirements of this specif
20、ication. 3.3.1 Restricted material. Flammable or explosive material, or material which can produce toxic or suffocating fumes shall not be used. Mercury in any form shall not be used in shipboard equipment, including materials and parts. 3.3.2 Finishes and plating. The use of pure tin as an underpla
21、te or final finish is prohibited both internally and externally. Tin content shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.4). 3.3.2 Metals. Current-carrying parts and terminal posts shall be copper alloy. Other metal posts shall be eithe
22、r noncorrosive or shall be treated, coated, or plated in accordance with MIL-E-917. 3.3.2.1 Dissimilar metals. Dissimilar metals in contact with each other shall be in accordance with the requirements of MIL-E-917. 3.3.3. Terminal board insulating materials. 3.3.3.1 Plastics, laminated. Laminated pl
23、astic material shall be glass base laminated plastic in accordance with MIL-E-917. 3.3.3.2 Plastics, molded. Molded terminal boards shall be made of glass fiber reinforced thermosetting molding compounds in accordance with MIL-E-917. 3.3.3.3 Flashing. Flash shall be removed from molded parts and the
24、 width of the flash edges made thereby shall be not greater than 1/32 inch. Flash edges shall be buffed smooth. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-22438C 4 3.4 Design and construction. Receptacle panels shall conform to the desig
25、n, construction, and physical dimensions specified on the specification sheets. 3.4.1 Hardware. Screws, nuts, washers, and miscellaneous hardware shall be of a good commercial grade material compatible with that of the basic panel, and protected against corrosion. Self-tapping screws or other self-t
26、apping devices shall not be used. 3.4.1.1 Locking devices. Locking devices shall be used, where required, to secure components to insure continuous satisfactory operation under test conditions specified. 3.4.2 Threads. Threads shall be right hand, class 2, complying with Unified and American Nationa
27、l screw threads as specified in FED-STD-H28. 3.4.2.1 Engagement of threaded parts. Thread engagement shall be a minimum of 2/3 of the diameter of the bolt or screw. 3.4.3 Drilling, countersinking, or tapping. All drilling, countersinking, and tapping shall be done before plating or finish is applied
28、, except when necessary to insure conformance with 3.4.5.4. 3.4.4 Sharp edges. All sharp edges that are accessible shall be given a slight radius. 3.4.5 Receptacle and plug assemblies. 3.4.5.1 Receptacles, direct current (dc) and 400 hertz (Hz) alternating current (ac). Receptacles furnished for dc
29、and 400Hz power outlets shall be in accordance with SAE AS50151 or MIL-DTL-2726, as applicable. The type receptacle designated by part number or specification sheet number, and the quantity to be furnished shall be as specified on the applicable specification sheet. 3.4.5.2 Receptacles, 60Hz ac. Rec
30、eptacles for 60HZ power outlets shall be duplex receptacle assemblies in accordance with W-C-596 and W-C-596/12 and furnished in the quantity specified on the applicable specification sheet. 3.4.5.3 Plug assemblies, dc and 400Hz ac. Plug assemblies for use with dc and 400HZ outlets shall be furnishe
31、d only when specified on the individual specification sheet. The plugs, when specified, shall be in accordance with SAE AS50151 or MIL-DTL-2726 and furnished in the quantity specified on the applicable specification sheet. 3.4.5.4 Ground continuity. Any receptacle with a ground contact electrically
32、connected to the receptacle shell or mounting strap shall maintain this electrical continuity with the panel through the mounting screws (an additional connection to a ground post may be required by the specification sheet). 3.4.6 Terminal boards. Terminal post assemblies (see 3.4.6.1) shall be secu
33、rely fastened to or molded integrally with the terminal board base by a method that will prevent any loosening or change in position under the test conditions of 4.7.5 and 4.7.6. Any live part of the terminal board exposed on the underside of the base (such as screws, rivets, and so forth used for a
34、ttaching terminal post assemblies to the base) shall be recessed in a counterbored hole, and covered with a good quality insulating resin. The sealing of the counterbored holes with resin is not required when the fasteners involved are prevented from loosening under vibration shock, and an insulatin
35、g subbase is employed, or the creepage and clearance distances specified in MIL-E-917 are adequate without the use of a subbase. To facilitate interpanel bus connections, the orientation of bus connection terminal posts shall be as shown on the applicable specification sheet. Phase and frequency, or
36、 polarity markings, as shown on the specification sheet, shall be molded or engraved on the terminal boards. The height of the terminal boards, after installation of the Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-22438C 5 panel, shall be
37、 sufficient to permit interpanel bus wiring to clear receptacles, if the terminal board location and terminal post orientation requires this wiring to pass over the receptacles (see 3.1). 3.4.6.1 Terminal posts. Separate terminal connections or posts, silver brazed (except in the case of screw termi
38、nal connections) to a common terminal bus bar, shall be provided for interpanel bus connections and local interior wiring. The terminal posts used for interpanel wiring shall be as specified on the applicable specification sheet. The type of terminal connector used for interior wiring shall be at th
39、e option of the manufacturer. 3.4.6.1.1 Ground connection. A separate ground connection terminal post shall be brazed to the panel or panel enclosure in the location and orientation shown on the specification sheet. 3.4.7 Interior wiring. All interior wiring shall be furnished and installed by the m
40、anufacturer using stranded copper wire of the type required by the individual specification sheet. Connections at screw terminals shall be made with pressure type connections. Connectors shall be prevented from turning, unless such turning does not decrease the creepage and clearance distances below
41、 those specified in MIL-E-917. Interior wiring shall be connected as shown in the wiring diagram on the applicable specification sheet. 3.4.8 Wiring diagram. A wiring diagram shall be furnished with all panels, and attached to th rear of the panel or to the inside of the cover for a totally enclosed
42、 panel. A type III label, as specified in MIL-DTL-16377, shall be used. 3.4.9 Enclosed receptacle panels. Receptacle panels designated as enclosed shall have all their components housed in a type I general purpose steel enclosure in accordance with NEMA PB1, and finished in accordance with 3.7. Encl
43、osure cover or door shall be sized to permit easy access to all interior components. A locking device shall be provided if the method of attachment of the cover or door to the enclosure is by hinges or means other than screw type fasteners. The manufacturer is cautioned that the thickness of the she
44、et metal and the supporting channels or strips used in the enclosure must be sufficient to permit the enclosure, complete with all interior components, to comply with the test conditions of 4.7.5 and 4.7.6. 3.5 Performance. 3.5.1 Operation. Receptacle panels shall perform in a satisfactory manner wh
45、en tested as specified in 4.7.1. 3.5.2 Dielectric strength. When receptacle panels are tested as specified in 4.7.2 there shall be no arching, breakdown, or other evidence of damage or malfunction. 3.5.3 Insulation resistance. When receptacle panels are tested as specified in 4.7.3 the insulation re
46、sistance between electrical conductors and between electrical conductors and ground shall be not less than 100 megohms. 3.5.4 Temperature rise. When enclosed receptacle panels are tested as specified in 4.7.4 the temperature rise of any current carrying component shall not exceed 30C. 3.5.5 Vibratio
47、n. When receptacle panels are tested as specified 4.7.5 there shall be no evidence of cracking, breaking, loosening of parts, interruption of circuit continuity, or other damage. 3.5.6 Shock. When receptacle panels are tested as specified in 4.7.6 there shall be no loosening of parts or other damage
48、 and the panels shall be capable of performing their intended function. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-22438C 6 3.6 Identification plates and labels. All open receptacle panels shall have an identification label, type I as sp
49、ecified in MIL-DTL-16377, attached to the interior of the panel. Enclosed receptacle panels shall be provided with either twto of these identification labels, attached to the interior and exterior of the enclosure cover, or one identification plate, in accordance with MIL-DTL-15024 and MIL-DTL-15024/5, types A, B, C, and F only, mounted externally on the enclosure cov
