DLA MIL-DTL-7703 F-2010 GUARD SWITCH GENERAL SPECIFICATION FOR.pdf
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1、Comments, suggestions or questions on this document should be addressed to Defense Supply Center Columbus, 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 usin
2、g the ASSIST Online database at https:/assist.daps.dla.mil/. AMSC N/A FSC 5930 INCH-POUND MIL-DTL-7703F 1 July 2010 SUPERSEDING MIL-DTL-7703E 31 January 2001 DETAIL SPECIFICATION GUARD, SWITCH, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the De
3、partment of Defense. 1. SCOPE 1.1 Scope. This specification covers the military requirements for hinged switch guards for use with toggle switches. 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
4、 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 cautioned that they must meet all specified requirements of documents cited in secti
5、ons 3 and 4 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 a part of this document to the extent specified herein. Unless otherwise specified, the issues of t
6、hese documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-83133 - Turbine Fuel, Aviation, Kerosene Type, JP-8 (NATO F-34), NATO F-35, and JP-8+100 (NATO F-37). MIL-PRF-87252 - Coolant Fluid, Hydrolytically Stable, Dielectric. STANDARDS MIL-STD-202 -
7、 Electronic and Electrical Component Parts. MIL-STD-1285 - Marking of Electrical and Electronic 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 19111-50
8、94.) NOTE: This draft dated October 31, 2000 prepared by DLA-CC, has not been approved and is subject to modification. DO NOT USE FOR ACQUITSTION PURPOSES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-7703F 2 2.3 Non-Government publications
9、. 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. AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSI/NCSL Z540-3 - Calibration Laboratories and Measuring and
10、 Test Equipment, General Requirements for. (Application for copies can be found online at http:/www.ansi.org/ or 25 West 43rd Street, New York, NY 10036-8002, telephone 212-642-4900, fax 212-302-1286) AMERICAN SOCIETY FOR TESTING AND MATERIALS ASTM E1119 - Glycol, Industrial Grade Ethylene, Standard
11、 Specification for (Copies of these documents are available online at www.astm.org or from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA, 19428-2959.) INTERNATIONAL ORGANIZATION FOR STANDARDS (ISO) ISO 10012-1 - Quality Assurance Requirements for Measur
12、ing Equipment - Part 1; Meteorological Confirmation System for Measuring Equipment. (Application for copies can be found online at http:/www.ansi.org/ or 25 West 43rd Street, New York, NY 10036-8002, telephone 212-642-4900, fax 212-302-1286) 2.4 Order of precedence. Unless otherwise notedherein or i
13、n the contract, 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 specific exemption
14、has been obtained. 3. REQUIREMENTS 3.1 MS standards. The individual item requirements shall be as specified herein and in accordance with the applicable (MS) standard. In the event of any conflict between the requirements of this specification and the MS standard, the latter shall govern (see 4.6.1)
15、. 3.2 Qualification. Switch guards furnished under this specification shall be products which are qualified for listing on the applicable qualified products list at the time set for opening of bids (see 4.5 and 6.3). 3.3 Requirements for switch guards not covered by MS standards. Unless otherwise sp
16、ecified (see 6.2.2), switch guards furnished under this specification and not covered by MS standards shall be products which have passed the inspection specified (see 4.3). -Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-7703F 3 3.4 Materia
17、l. Material shall be as specified on the applicable MS standard (see 3.1). When a definite material is not specified, a suitable material shall be used which will enable the switch guards to conform to the performance requirements of this specification. Acceptance or approval of any constituent mate
18、rial shall not be construed as a guaranty of the acceptance of the finished product. 3.4.1 Fungus-proof materials. All materials shall be non-fungus nutrient (see 6.7 for guidance). Certification that the materials used are not fungi nutrients shall be submitted to the preparing activity as part of
19、the qualification test report. 3.4.2 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.
20、5) 3.5 Design and construction. The switch guards shall be of the design, construction, and physical dimensions specified (see 3.1). 3.5.1 Locking mechanism. The switch guard shall be constructed so that when it is closed, motion of the switch toggle shall be restricted as shown on the applicable MS
21、 standard (see 3.1). 3.6 Performance. 3.6.1 Operating force. When tested as specified (see 4.6.2) the operating force shall be within the limits specified on the applicable MS standard (see 3.1). 3.6.2 Hinge life. The switch guard shall satisfactorily complete 20,000 cycles of operation, without bre
22、akage or malfunction, when tested as specified (see 4.6.3). The switch guard shall be examined to insure that operation of switch guards, so designed, shall actuate the switch toggle to the position indicated on the applicable MS standard, and that switch guards not specifically designed to perform
23、this function shall not change the position of the toggle lever of the toggle switch. 3.6.3 Hinge strength. When tested as specified (see 4.6.4), there shall be no damage to the switch guard. Failures shall not occur below 33 pounds. 3.6.4 Shock (specified pulse). When switch guards are tested as sp
24、ecified (see 4.6.5) they shall not transfer from the open to the closed position or from the closed to the open position. The switch guard shall not cause separation of closed contacts or closure of open contacts exceeding the specified amount of time for the switch used in this test. There shall be
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