DLA MIL-PRF-8805 104 D-2012 SWITCHES SENSITIVE PLUNGER 7 AMPERES 4PDT RESILIENT SEAL GROUNDED PLUNGER.pdf

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1、AMSC N/A FSC 5930 INCH-POUND MIL-PRF-8805/104D 6 December 2012 SUPERSEDING MIL-PRF-8805/104C 4 October 2004 PERFORMANCE SPECIFICATION SHEET SWITCHES, SENSITIVE, PLUNGER, 7 AMPERES, 4PDT, RESILIENT SEAL, GROUNDED PLUNGER This specification is approved for use by all Departments and Agencies of the De

2、partment of Defense. The complete requirements for acquiring the switches described herein shall consist of this specification and the latest issue of MIL-PRF-8805. M8805/104-001 PIN PLUNGER FIGURE 1. Dimensions and configurations. LOCKWASHER NASM 35333-78 OR EQUIVALENT Provided by IHSNot for Resale

3、No reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8805/104D 2 M8805/104-002 KEYWAY DETAILS ROLLER PLUNGER FIGURE 1 Dimensions and configurations - Continued. LOCKWASHER NASM 35333-78 OR EQUIVALENT AZIMUTH ADJUST NUT NASM 21392-11 OR EQUIVALENT Provided by IHSNot for Resale

4、No reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8805/104D 3 Inches mm Inches mm Inches mm Inches mm .003 0.08 .12 3.05 .469 11.91 1.000 25.40 .004 0.10 .130 3.30 .47 11.94 1.100 27.94 .015 0.38 .15 3.81 .475 12.07 1.125 28.58 .030 0.76 .17 4.32 .525 13.34 1.200 30.48 .07

5、2 1.83 .250 6.35 .700 17.78 1.375 34.93 .093 2.36 .375 9.53 .850 21.59 1.719 43.66 .100 2.54 .432 10.97 .895 22.73 2.0 50.80 72.0 1828.80 NOTES: 1. Dimensions are in inches. 2. Unless otherwise specified, tolerances are .03 (0.76 mm) for two place decimals, .010 (.25 mm) for three place decimals, an

6、d 1/2 for angles. 3. Metric equivalents are given for general information only. 4. Contour optional provided maximum dimensions specified are not exceeded. 5. The marking (identification and circuit schematic) shall be permanently and legibly marked on the switch case in the location shown (on side

7、of case opposite keyway). 6. Wire leads shall be marked at 3.0 inch intervals with switch circuit identification number followed by wire gage number (1-20, 2-20, 3-20, etc.). 7. Hex nut shall be MS21340-04 or equivalent. Alternative base metals and protective finishes, as approved by the qualifying

8、activity, may be utilized for hardware material. FIGURE 1 Dimensions and configurations - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8805/104D 4 REQUIREMENTS: Dimensions and configuration: See figure 1. Enclosure design: 4 (Re

9、silient). Temperature characteristic: 1 (-55 to +85C) continuous duty plus switches shall be subjected to 100 cycles of temperature variations. One cycle is defined as the temperature and times, in order shown, in table I. Immediately upon completion of testing of a temperature requirement, the swit

10、ches shall be inserted into the subsequent test chamber. At the end of the temperature condition of each cycle, the switches shall make, carry, and break rated resistive current at rated voltage (seal level) for the number of operations shown in table I. Test shall begin after oven temperature stabi

11、lizes. Prior to each make/carry/break operation involving rated resistive current the switch shall carry without making or breaking 400 percent of rated resistive current for 200 milliseconds. Failures, defined as the inability to make or break rated resistive current, shall not occur throughout the

12、se tests. TABLE I. Temperature cycling. Temperature Time Number of switch operations (C) (Minutes) 110 30 30 174 10 10 215 1 2 Shock type: Method 213, test condition B (75G), MIL-STD-202. Vibration grade: 2 (10 Hz to 2,000 Hz). Weight: M8805/104-001,-003: .75 pound max. M8805/104-002,-004: .80 pound

13、 max. Operating characteristics (20 percent variation from specified values acceptable after test): Actuating force: 9 3 pounds. Full overtravel force: 30 pounds maximum. Releasing force: 5 pounds minimum. Pretravel: .050 inch maximum. Movement differential: .030 inch maximum Overtravel: .125 inch m

14、inimum. Coincidence of operating and releasing points: All circuits shall transfer within .010 inch of plunger travel after first circuit transfers. Strength of actuating means: 100 pounds minimum. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-

15、PRF-8805/104D 5 Contact resistance: Low level circuit requirements apply. Dielectric withstanding voltage: Sea level: 1,250 V rms. Altitude: 600 V rms at 80,000 feet. After electrical endurance, the dielectric withstanding voltage points of application between all unconnected terminals of the same p

16、ole is not applicable. Seal test: Only watertight test shall be performed in group A. Mechanical endurance: 25,000 cycles. Electrical endurance: 25,000 cycles. Low level circuit: 25,000 cycles over the continuous duty temperature range (applies provided switch has not made nor broken more than 250 m

17、illiamperes at 6 volts dc or peak ac). Electrical ratings: See table II. Moisture resistance: When switches are tested wet, the insulation resistance shall not be less than 100 meg-ohms. Icing: Applicable. Case and plunger grounding for EMI: All case parts shall be bonded together (such as by stakin

18、g, soldering, welding, or brazing) either along the entire abutting surfaces or at a minimum of four approximately equally spaced areas along each abutting surface. The electrical resistance between the plunger and the wire exit portion of the switch housing bracket most remote from the threaded bus

19、hing shall not exceed 800 milliohms under all the following conditions: a. Measurements made in accordance with MIL-STD-202, method 311. b. Without polishing or cleaning the areas on the switch to which the test leads are attached. c. With the plunger both fully extended and fully depressed. d. Thro

20、ughout the total life of the switch. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8805/104D 6 Wire exit: Wire lead-potting junction shall be protected from damage resulting from lead-dress strains. Compliance with this requirement shall be

21、 proved as follows: Three leads shall be tested. No lead shall be tested in more than one direction. Forces shall be applied in three mutually perpendicular directions, including the one most likely to cause failure. Qualification testing (destructive): A force of 20 pounds shall be applied for a pe

22、riod of 24 hours minimum after which there shall be no break through the insulation at the strain relief. The force shall be increased in three-pound increments for a duration of five minutes minimum for each increment. The wire insulation shall be examined for break through at the strain relief aft

23、er each five-minute exposure at the increased load. The test shall be conducted with loads increased up to 42 pounds or until wire breakage. Permanent deformation of strain relief components shall not occur at loads less than 24 pounds. Wire elongation shall not be considered as cause for failure. W

24、ire breakage shall not occur at loads less than 20 pounds. There shall be no detrimental effect on the potting which results in seal failure, or failure to meet the dielectric withstanding voltage requirements. Group C (non-destructive): A 15 pound load shall be applied for one minute. There shall b

25、e no permanent deformation of the strain relief members of break through of the wire insulation, or wire breakage. There shall be no detrimental effect on the potting which would result in failure to meet the seal and dielectric withstanding voltage requirements. Marking: Marking shall remain legibl

26、e after the following test: a. Soak for a minimum of 72 hours at room temperature in each of the fluids specified below. b. After each soak period the specimen shall be wiped dry and then rubbed with a dry thumb a minimum of 20 times applying moderate pressure. Note: Each test specimen shall be subj

27、ected to soak periods in all the fluids. c. If metal foil identification plates are used, they shall comply with MIL-DTL-19834. In addition to the legibility requirement defined herein, the identification plate shall not become loosened or partially or completely detached from the switch housing dur

28、ing or after the soak tests. d. The test fluids to be used shall include: MIL-DTL-83133, Turbine Fuels, Aviation, Kerosene Types. MIL-PRF-5606, Hydraulic Fluid, Petroleum Base, Aircraft, Missile, and Ordnance. MIL-PRF-7808, Lubricating Oil, Aircraft Turbine engine, Synthetic Base. Part numbers: M880

29、5/104 - (dash number from table IV). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8805/104D 7 TABLE I. Electrical ratings. Load 28 V dc 115 Vac, 400 Hz Sea level 80,000 ft. Sea level 80,000 ft. (amperes) (amperes) (amperes) (amperes) Resis

30、tive 7 7 1 1 Inductive 3 3 1 1 Motor 4 4 1 1 Lamp 2 2 1 1 Qualification and group C retention of qualification: Group submission: See table III. Group C retention of qualification: Nondestructive wire exit test is applicable (6 sample units). TABLE III. Qualification and group - C tests (group submi

31、ssion). Examination or test Samples Extent of approval Qualification inspection table of MIL-PRF-8805 1/ M8805/104-002 (12 units) All Visual and mechanical examination Operating characteristics M8805/104-001, -004 (2 units each) Wire exit test 2/ M8805/104-001, -004 (2 units each with potting, 2 uni

32、ts each without potting) Temperature cycling 3/ (in accordance with table I) M8805/104-001 (2 units) Marking test 4/ M8805/104-001 (2 units) 1/ Case and plunger grounding test to be accomplished before and after mechanical endurance. 2/ Destructive test is applicable in initial qualification testing

33、 only. 3/ Applicable in qualification testing only. 4/ Following immersion, the switch shall also be subjected to terminal strength, insulation resistance, dielectric withstanding voltage, operating characteristics, and seal tests. Provided by IHSNot for ResaleNo reproduction or networking permitted

34、 without license from IHS-,-,-MIL-PRF-8805/104D 8 TABLE IV. Dash numbers. Dash number Actuator Wire exit -001 -002 Pin plunger Roller plunger Side -003 -004 Pin plunger Roller plunger Bottom Changes from previous issue. The margins of this specification are marked with vertical lines to indicate whe

35、re modifications from this revision were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective

36、of the marginal notations. Referenced Documents: MIL-DTL-83133 MIL-PRF-5606 MIL-PRF-7808 MIL-PRF-8805 MIL-DTL-19834 MS21340 MS25081 MIL-STD-202 NASM 35333 NASM 21392 Custodians: Preparing activity: Air Force - 85 DLA - CC DLA - CC (Project 5930-2011-113) Review activities: Air Force - 99 NOTE: The a

37、ctivities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.dla.mil/ . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-