1、MILITARY SPECIFICATION SWITCHES, TOGGLE, ELECTRICALLY KELD, SEALED Tbis specification has been approved by the Naval Air Systems Command, Department of the Navy. 1. SCOPE 1.1 Scope. This . scification covers general requirements for direct current electrically held, environmentally sealed toggle swi
2、tches for use in alter- nating current (AC) and direct current C) applications. (See 6.1. ) 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent speci- fied herein. . - - - .
3、 - - SPECIFICATIONS Federal PPP-B466 PPP-B-636 PPP-B-676 PPP-T-60 Box, Folding, Paperboard Box, Fiberboard Box, Set-up Tape, Pressure-Sensitive Adhesive, Waterproof, For Packaging . ZZ-R-765 Military MIL-“14 Rubber, Silicone, Low and High-Temperature and Tear Resistant Molding Plastics and Molded Pl
4、astic Parts, Thermosetting mas DQCUMENT CONTAINS however, laminated plastics shall not be used for the switch body. Other types of plastic materials possessing superior characteristics may be used provided the manufacturer submits acceptable evidence to the activity responsible for qualification dur
5、ing this qualification test program on the submitted product. In addition to these specifications, the plastic material shall not cause any hazard when operating under the ehremes of environment and per- formance as specified herein. Such hazards may be defined as an tendency to support combustion,
6、give off noxious gases in harmful quantities, give off any gases in paties sufficient to cause explosion of sealed housing, give off any gases in a sealed housing that will cause contamination of the contact or other parts of the com- ponent, or form current-carrying tracks when subjected to arcing
7、conditions en- countered when any of the tests in this specification are performed on the component, 3.4.3 Elastomer seals, The material for all elastomer seals shall be silicone rubber in accordance with ZZ-R-765. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
8、e from IHS-,-,-3.5 Design and construction. Switches shall be so constructed as to insure proper operation when mounted in any position. The switches shall be of the design, construction, and physical dimensions specified (see 3.1). 3.5.1 Actuating lever. The actuating lever shall be metal with a lu
9、ster- less finish and shall be insulated from all current-carrying parts. 3.5.2 Terminals. Terminals shall be as specified (see 3.1). 3.5.2.1 Solder terminals. Solder terminals shall be treated to facilitate soldering, Coatings such a hot solder, hot-tin dip, or gold plating are acceptable, When gol
10、d plating is used, its thickness shall be a minimum of 30 millionths of kan inch. Gold wash or water lacquer shall not be used as a coating, 3.5.2.2 Screw terminals. Screw terminals shall be provided with assem- bled hardware as specified (see 3.1). Screw terminals shall be treated to facilitate sol
11、dering. 3.5.-2.3 Wire-lead terminals. Wire-lead terminals shall be No. 20 wire leads per MIL-W-5086 Type II marked with circuit identification and wire gauge (1-20, 2-20, etc.) per MIL-W-5088. S. 5.2.4 Unused terminals. Terminals which are not functionally required as indicated in the applicable spe
12、cification sheet (see 3.1) shall not be supplied. 3.5.3 Mounting means. 3.5.3.1 Mounting bushing. The mounting bushing shall be as specified . (see 3.1). The bushing shall be provided with a seal between the toggle lever and the switching mechanism. The body of the seal shall not protrude from the t
13、p of the mounting bushing with exception of the tapered joint or meniscus where the seal joins the toggle lever. 3.5.3.2 Mounting hardware. 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
14、on the applicable specification sheet (see 3.1). 3.5.4 Screw threads. Screw threads on external threaded parts shall be in accordance with Handbook H28. Threading of nonmetallic parts shall not be permitted. Terminal thread engagement shall be at least two full threads. 3.5.5 Soldering. Where solder
15、ing is employed, it shall be in accordance with MIL-STD-454 except that excess flux shall be removed. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.6 Operating characteristics. When switches are tested as specified in 4.9.2, the toggle lever an
16、gular travel, hold-in point, drop-out point, coil resist- ance, and override force shall be as specified (see 3.1). 3.7 Strength of terminals, When switches are tested as specified in 4.9.3.1, 4.9.3.2, or 4.9.3.3, there shall be no breakage, loosening, rotation of terminals, or other damage which wo
17、uld affect subsequent operation of the switch. 3.8 Strength of actuating lever pivot and lever stop. When switches are tested as specified in 4.9.4, there shall be no malfunction, damage, breakage, or short circuit; the switch shall operate mechanically and electrically. 3.9 Dielectric withstanding
18、voltage. When switches are tested as. specified in 4.9.5 there shall be no arcing, flashover, or leakage current in excess of 1. O milliamperes. 3.10 Mechanical endurance. When switches are tested as specified in -4.9.6, there shall be no mechanical damage and the switch must properly control a pilo
19、t lamp circuit for a total of 10 operations at the conclusion of the test. 3.11 Electrical overload and endurance. When switches are tested as specified in 4.9.7, each pair of switch contacts under test shall open and close the circuit in proper sequence during each cycle of the switch actuating mem
20、ber. There shall be no external evidence of malfunction or damage during or after the test. This includes deterioration, electrical discharge, overheating, or evidence of combustion. At the conclusion of the test, the switch shall be electrically and mechanically operable while controlling the test
21、load, at the test environment and at morn conditions. 3.12 Seal. When switches are tested as specified in 4.9.8, the leakage rate shill not exceed 1 x standard atmosphere cubic centimeter per second (atm cchec). 3.13 Vibration. When switches are tested as specified in 4.9.9, there shall be no separa
22、tion of closed contacts exceeding 10 microseconds or closure of open contacts exceeding 10 microseconds. There shall be no evidence of damage. 3.14 Shock. When switches are tested as specified in 4.9.10, there shallbe no separation of closed contacts exceeding 10 microseconds or closure of open cont
23、acts exceeding 10 microseconds. There shall be no evidence of damage. 3.15 Acceleration. When switches are tested as specified in 4.9.11, there shall be-no separation of closed contacte or closure of open contacts. There shall be no evidence of damage. 6 Provided by IHSNot for ResaleNo reproduction
24、or networking permitted without license from IHS-,-,-3.16 Salt spray. When switches are tested as specified in 4.9.12, there shall be no warping, cracking, or corrosion which will adversely affect subsequent operation. The specified cycling shall be completed without failure, After the test, -the mo
25、unting hardware shall be readily removable. 3.17 Moisture resistance. When switches are tested as specified in 4.9.13, there shall be no damage which would adversely affect subsequent operation. 3.18 Sand and dust. When switches are tested as specified in 4.9.14, the switch shall properly control a
26、pilot lamp circuit for a total of 10 operations at the conclusion of the test. 3.19 Explosion. When switches are tested as specified in 4.9.15, them shall be no explosion. If the switch causes an explosion at any of the test altitudes, it shall be considered to have failed to pass the test and no fu
27、rther testing may be attempted. 3.20 Marking. Switohes shall be marked in accordance with MIL-STD- 130 with the manufacturers name or trademark, the manufacturers part number, and the applicable specification sheet part number. The date of manufacture shall be marked in accordance with MIL-STD-456.
28、The terminals shall be perknanently identified. The switch case shall be permanently marked with the switch circuit diagram as shown on the applicable specification sheet (see 3.1). 3; 21 Workmanship. Switches shall be manufactured and processed in a careful and workmanlike manner in accordance with
29、 good design and sound practice. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein, Except as otherwise specified in the c
30、ontract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the in- spections set forth in the specification where such i
31、nspections are deemed necessary to assure supplies and services conform to prescribed requirements. Nothing specified herein shall prevent the supplier or manufacturer from taking additional -ples and making such additional inspection-as he may deem necessary or desirable to assure conformance of sw
32、itches to this specification. 4.2 Classification of inspection. The examination and testing of switches shall be classified as follows: (a) Component-materids inspection (see 4.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(b) Qualification ins
33、pection (see 4.5). 1 (c) Inspection requirements for switches not covered by speci- fication sheets (see 4.6). (d) Quality-conformance inspection (see 4.7). (1) Inspection of product for delivery (see 4.7.1). (2) Inspection of preparation for delivery (see 4.8). 4.3 Component-materials inspection. C
34、omponent-materials inspection shall consist of verification that the component materials listed in Table I, used in fabricating the syitches, are in accordance with the applicable referenced specifica- tions or requirements prior to such fabrication. TABLE I 4.4 Inspection conditions. Unless otherwi
35、se specified herein, all tests required by this specification shall be made at room ambient conditions in accord- ance with the “general requirement“ of MIL-STD-202. 4.4. I Test equipment and inspection facilities. Test equipment and inspection facilities shall be of sufficient accuracy, cpality, an
36、d quantity to permit perfarmance of the required acceptance tests. The manufacturer shall establish adequate calibration of test equipment to the satisfaction of the Government. Calibration of standards which control the accuracy of the inspection equipment shall comply with the requirements of MIL-
37、C-45662. 4.5 Qualification inspection. Qualification inspection shall be performed at a Government laboratory or private test facility approved by the Government. Qualification inspection shall consist of the examinations and tests specified in Table SI and in the order shown. 4.5.1, Sample. For qua
38、lification inspection, the sample size for each test shall be as specified in Table II. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-m ri y1 rT S - P3 ri N * - I- I v) 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without
39、license from IHS-,-,-4.5.1.1 Single submission. A sample consisting of the required number of specimens of each switch shall be submitted. Qualification shall be restricted to the type submitted. 4.5.1.2 Group submission. The extent of qualification shall be in accord- ance with the applicable speci
40、fication sheet (see 3.1). 4.5.1.3 Failures. Failure of any switch to comply with the applicable requirements shall be cause for refusal to grant qualification. 4.5.1.4 Test data. Each submission shall be accompanied by test data covering the tests listed in Table II which have been performed on repr
41、esentative specimens. The representative specimens shall be the types of switches being submitted for test. All test data shall be submitted in duplicate. 4.5.1.5 Certification of material. When submitting samples for qualifica- tion, the manufacturer shall submit certification, in duplicate, that t
42、he materials used in his components are.in accordance with the applicable specification require- ments. 4.5.1.6 Description of items. The manufacturer shall submit bis part number for each switch for which qualification is sought. 4.6 Inspection requirements for switches not covered by specification
43、 sheets. Inspection requirements for switches not covered by specification sheets will be performed by the supplier, as specified in 4.7.1 after award of contract and prior to production, at a location designated by the Government. When specified, the samples and test routine shall be as specified i
44、n 4.5.1.1 and 4.5. l. 2. Group B inspection is not applicable for switches not covered by specification sheets. Approval of switches not covered by specification sheets may be extended to a con- tract, other than the one under which it is granted. 4.7 Quality-conformance inspection. 4.7.1 Inspection
45、 of product for delivery. Inspection of product for delivery shall consist of Group A inspection. 4.7.1.1 Group A inspection. Group A inspection shall consist of the performance of tests specified in Table III in the order shown, Examination of product shall be limited to the inspection of marking a
46、nd workmanship (see 4.9.1). 4.7.1.2 Sampling plan. Statistical sampling shall be in accordance with MIL-STD-105. The Acceptable Quality Level (AQL) shall be as defined in MIL- STD-105. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE III GROU
47、P A INSPECTION Examination or Test AQL (percent defective) Major Minor Method. Paragraph seal 1/ 4.9.8 Examination of product - 2/ 1. o 4.9.5 Dielectric withstanding voltage 2/ 1. o 4.9.2 Operating characteristics 4. O 1: o 4.9.1 - 1/ 100% inspection, no defects allowed. - 2/ All defects in these ca
48、tegories are considered major defects. - 4.7.1.3 Inspection lot. An inspection lot shall be as specified in MIL- STD-105 with the following modifications: (a) All switches that appear on the same specification sheet and that are offered for delivery at one time shall be considered a lot for purposes
49、 of sampling and inspection. 4.7.2 Group B inspection. Group B inspection shall consist of the tests specified in Table IV in the order shown. TABLE N GROUP B INSPECTION Examination of Test Vibration Shock Mechanical endurance Overload Electrical endurance Sealing Inductive DC Requirement Paragraph 3.13 3.14 3.10 3.11 3.11 3.11 3.12 Method Paragraph 4.9.9 4.9 10 4.9.6 4.9.7; 1 4.9.7 4.97.3 4.9.8 12345 11 22 111 333 222 3333 LO 1 2 3 - 4.7.2.
