DLA MIL-DTL-6807 F-2012 SWITCHES ROTARY SELECTOR POWER GENERAL SPECIFICATION FOR.pdf

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1、Comments, suggestions or questions on this document should be addressed to DLA Land and Maritime, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to switchdla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASS

2、IST Online database at https:/assist.dla.mil/ AMSC N/A FSC 5930 INCH-POUND MIL-DTL-6807F 3 December 2012 SUPERSEDING MIL-DTL-6807E 31 January 2005 DETAIL SPECIFICATION SWITCHES, ROTARY, SELECTOR POWER, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies o

3、f the Department of Defense. 1. SCOPE 1.1 This specification covers the general requirements for closed construction rotary switches designed for use in power circuits and capable of making, carrying, and breaking electrical loads of up to and including 10 amperes, unless otherwise specified (see 3.

4、1). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section 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 ha

5、s 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 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The

6、 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 STANDARDS FED-STD-H28 - Screw Thread Standards for Federal Services DEPA

7、RTMENT OF DEFENSE SPECIFICATIONS MIL-A-8625 - Anodic Coatings, for Aluminum and Aluminum Alloys. MIL-I-24768/1 - Insulation, Plastic, Laminated, Thermosetting, Glass-Cloth, Melamine-Resin (GME) MIL-I-24768/2 - Insulation, Plastic, Laminated, Thermosetting, Glass-Cloth, Epoxy-Resin (GEE) MIL-I-24768/

8、3 - Insulation, Plastic, Laminated, Thermosetting, Glass-Cloth, Epoxy-Resin (GEB) MIL-I-24768/17 - Insulation, Plastic, Laminated, Thermosetting, Glass-Cloth, Silicone-Resin (GSG) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-6807F 2 DEPART

9、MENT OF DEFENSE STANDARDS MIL-STD-130 - Identification Marking of U.S. Military Property. MIL-STD-202 - Test Methods for electronic and Electrical Component Parts. MIL-STD-1285 - Marking of Electrical and Electronic Parts (Copies of these documents are available online at https:/assist.dla.mil/quick

10、search/ or https:/assist.dla.mil/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, 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 issu

11、es of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM-B633 - Zinc on Iron and Steel, Electrodeposited Coatings of ASTM-B700 - Electrodeposited Coatings of Silver for Engineering Use, Standard Specification for ASTM-D5948 - Compounds, Molding, Thermosetting. (

12、Copies of these documents are available online at http:/www.astm.org or from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, Pennsylvania, 19428-2959.) INTERNATIONAL ORGINZATIOINS FOR STANDARDS (ISO) ISO 10012 - Measurement management systems Requirements fo

13、r measurement processes and measuring equipment (Copies of these documents are available online at http:/www.iso.org.) NATIONAL CONFERENCE of STANDARDS LABORTORIES (NCSL) NCSL Z540.3 - Calibration of Measuring and Test Equipment, Requirements for. (Copies of these documents are available online at h

14、ttp:/www.ncsli.org/ or from the National Conference of Standards Laboratories, 2995 Wilderness Place Suite 107, Boulder, Colorado, 80301-5404, telephone 303-440-3339.) SAE INTERNATIONAL SAE-AMS-QQ-N-290 - Nickel Plating (Electrodeposited). SAE-AMS-QQ-P-416 - Plating, Cadmium (Electrodeposited). SAE-

15、AS50861 - Wire, Electric, Polyvinyl Chloride Insulated, Copper or Copper Alloy (Copies of these documents are available online at http:/www.sae.org or from SAE International, 400 Commonwealth Drive, Warrendale, Pennsylvania, 15096-0001) 2.4 Order of precedence. In the event of a conflict between the

16、 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 obtained. Provided by IHSNot for ResaleNo r

17、eproduction or networking permitted without license from IHS-,-,-MIL-DTL-6807F 3 3. REQUIREMENTS 3.1 MS Sheets. The individual part requirements shall be as specified herein and in accordance with the applicable MS sheet. In the event of any conflict between requirements of this specification and th

18、e MS sheet, the latter shall govern (see 6.1). 3.2 Qualification. Switches, furnished under this specification which are covered by MS Military Specifications, listed in the supplement to this specification shall be products which have been tested, have passed the qualification tests specified in 4.

19、5, and have been listed on or approved for listing on the applicable qualified products list, (see 6.3). 3.3 Inspection Requirements for Switches Not Covered by MS Sheets. Unless otherwise specified (see 6.2), switches furnished under this specification, not covered by MS Sheets, shall be a product

20、which has been tested and passed the inspection specified in 4.6 unless otherwise specified. In addition, inspection of product for delivery shall be in accordance with 4.7.1.1 and 4.7.1.2. 3.4 Materials. Materials shall be as specified herein. However, when a definite material is not specified, a m

21、aterial shall be used which will enable the switches to meet the requirements of this specification. Acceptance or approval of any constituent material shall not be construed as a guaranty of the acceptance of the finished product. 3.4.1 Metals. Metals shall be of a corrosion-resistant type or shall

22、 be cadmium plated in accordance with class 2, type II, of ASTM-B633; nickel plated in accordance with class 1, type VII, of SAE-AMS-QQ-N-290: or anodized in accordance with MIL-A-8625, to resist corrosion. Aluminum shall not be used for major structural parts, such as the front plate, bushing, shaf

23、t, detent, etc. 3.4.1.1 Contact Surfaces. All contact surfaces shall be silver or silver alloy with a minimum thickness of .002. Terminal surface shall be of the same material as contact surfaces or shall be silver plated to a minimum thickness of .0001, in accordance with ASTM-B700. 3.4.1.2 Ferrous

24、 material. Ferrous material shall not be used for current-carrying parts. 3.4.1.3 Dissimilar metals. When dissimilar metals are used in intimate contact with each other, protection against electrolysis and corrosion shall be provided. The use of dissimilar metals in contact, which tend toward active

25、 electrolytic corrosion (particularly brass, copper, or steel used in contact with aluminum or aluminum alloy), is not acceptable. However, metal-plating or metal-spraying of dissimilar base metals to provide similar or suitable abutting surfaces is permitted. The use of dissimilar metals separated

26、by a suitable insulating material is also permitted. For additional guidance on dissimilar metals see 6.4. 3.4.2 Plastic. 3.4.2.1 Plastic laminates. Plastic laminates shall be in accordance with MIL-I-24768/17, MIL-I-24768/1, MIL-I-24768/2 or MIL-I-24768/3. 3.4.2.2 Plastic molding. Plastic molding m

27、aterial shall be MAI30, MAI60, SDGF, MME, and GDI30F in accordance with ASTM-D5948. 3.4.3 Terminal hardware. The terminal hardware shall be as specified (see 3.1). If the terminal hardware is not assembled to the switch, it shall be placed in a bag and firmly secured to the switch. 3.4.4 Mounting ha

28、rdware. The mounting hardware shall be as specified (see 3.1). For direct government procurement, all mounting hardware shall be assembled in the proper order as shown on the applicable MS sheet. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DT

29、L-6807F 4 3.4.5 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and externally. Tin content of switch components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.8). 3.5 Design and co

30、nstruction. 3.5.1 General. Switches shall be of the design, construction, and physical dimensions specified (see 3.1 and 6.2). Rotary selector switches, consisting of two or more individual switch elements assembled for operation at the same time, shall be provided with a positive locking means to a

31、ssure that they will operate as a unit. Switches shall be of closed construction, unless otherwise specified. 3.5.2 Threaded parts. Unless otherwise specified (see 3.1), all threaded parts shall be in accordance with FED-STD-H28. Wherever possible, unified screw threads shall be used. Where a specia

32、l diameter-pitch combination is required, the thread shall be of American National Form and of any pitch which is used in the fine-thread series. 3.5.2.1 Engagement of threaded parts. All threaded parts shall engage at least three full threads in soft metals like aluminum and its alloys. A minimum o

33、f two full threads shall be used in harder materials such as brass or steel. When a screw mates with a plastic part, a threaded metal insert shall be contained therein. 3.5.3 Mechanical stops (when applicable). Mechanical stops shall be furnished and their positions shall be as specified (see 3.1 an

34、d 6.2). 3.5.4 Operating shaft. The operating shaft shall be fabricated of steel and shall be insulated from all current-carrying members. The length, shape, and special shaft construction shall be as specified (see 3.1). Unless otherwise specified (see 3.1), the operating shaft shall be 0.250 (+0.00

35、1, -0.002) inch diameter. 3.5.5 Indexing. Switches shall have a positive detent or indexing mechanism, locating each contact position. The detent or indexing mechanism shall be designed to minimize the possibility of the movable element or elements coming to rest between contact positions. Glass or

36、other fragile materials shall not be used in detent or indexing mechanisms. 3.6 Circuit configuration. When switches are tested as specified in 4.9.2, the switch-circuit configurations shall conform to the applicable diagrams specified (see 3.1). Switches shall make and break the required circuits i

37、n all positions and in all sections. In switching make-before-break contact arrangement in either direction, the next subsequent contact throughout the switch shall close before the preceding contacts open. in switching break-before-make contact arrangement in either direction, all closed contacts t

38、hroughout the switch shall open before any of the contacts in the next position close. 3.7 Strength of mounting bushing (bushing mounted switches only). When bushing mounted switches are tested as specified in 4.9.3, there shall be no damage to the switch, or loosening or twisting of the bushing rel

39、ative to the switch front plate assembly. 3.8 TORQUE 3.8.1 Rotational. When switches are tested as specified in 4.9.4 and 4.9.4.2, there shall be no broken, loose, deformed, or displaced parts, nor shall there be any slippage of moving parts. 3.8.2 Stops (applicable only to switches with stops). Whe

40、n switches are tested as specified in 4.9.4 and 4.9.4.2, there shall be no broken, loose, deformed, or displaced parts, nor shall there be any slippage of moving parts. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-6807F 5 3.9 Terminal stre

41、ngth. When switches are tested as specified in 4.9.5, the switch shall be able to operate mechanically and electrically. There shall be no short-circuiting, breakage, or damage to the switch. 3.10 Contact resistance. When measured as specified in 4.9.6, the contact resistance shall not exceed the fo

42、llowing values; Initial - 10 milliohms After moisture-resistance test - 15 milliohms After life (rotational) test - 20 milliohms After salt spray test - 15 milliohms After sand and dust - 50 milliohms 3.11 Thermal shock. When switches are tested as specified in 4.9.7, there shall be no mechanical or

43、 electrical damage or loosening of rivets or other fastening devices. 3.12 Vibration. When switches are tested as specified in 4.9.8, mating contacts shall not open for a period of time longer than 10 microseconds (usec) before reclosing. After the test, there shall be no change in shaft position, o

44、r evidence of broken, loose, deformed, or displaced parts. 3.13 Shock. When switches are tested as specified in 4.9.9.1, mating contacts shall not open for a period of time longer than 10 usec unless otherwise specified (see 3.1), and when tested as specified in 4.9.9.2, for a period of time not lon

45、ger than 5 milliseconds unless otherwise specified (see 3.1), before return to the closed position. After shock testing there shall be no change in shaft position, or evidence of broken, loose or displaced parts. If any distortion or deformation is noted, the switch shall be subjected to mechanical

46、life with any electrical load in accordance with the individual specification sheet (see 3.1) and checked for dielectric withstanding voltage, insulation resistance, torque and contact resistance in accordance with this specification. Failure to pass any of these tests shall constitute a switch fail

47、ure (see 4.5.3). 3.14 Dielectric withstanding voltage. When tested as specified in 4.9.10 to 4.9.10.2 inclusive, switches shall withstand the application of the specified voltages without arcing, flashover, breakdown of insulation, or damage, and there shall be no leakage current greater than 100 mi

48、croamperes. 3.15 Temperature rise. When measured as specified in 4.9.11, the temperature rise at the switch stationary contact shall not exceed 30C. 3.16 Overload. When tested as specified in 4.9.12, there shall be no mechanical or electrical failure and the switch shall be operative at the conclusi

49、on of the test. 3.17 Life. When switches are tested as specified in 4.9.13 to 4.9.13.2 inclusive, they shall be electrically and mechanically operative during and after the test. The contact sequential pattern shall be maintained throughout the test. After the test, there shall be no evidence of broken, deformed, displaced or loose parts. 3.17.1 Switch-section alignment (applicable only to non-shorting switches) When switches are tested as specified in 4.9