1、. . . . . p/&;r/Qf MIL-S-82529 (OS) i8 April 1960 Superseding NOTs XS 412 Rev. H 29 September 1967 . MILITARY SPECIFICATION FOR SWITCH, THERMAL MARK 56 MOD 1 This specification has been approved by the Naval Ordnance Systems Command, Department of the Navy 1. SCOPE 1. 1 This specification establishe
2、s the requirements of one type of Thermal Switch hiark SG Mod 1. (See 6.1 for intended use and description.) 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on the date of invita- tion for bids, form a part of this specification to the extent specified herein, ex- cept :i
3、s noted. SPECIFIC ATION FEDERAL PPP-B- 621 Boxes, Wood, Nailed and Lock Corner MILITARY MIL- P- 116 Preservation, Methods of MIL-L-10547 liner., Case, and Sheet, Overwrap: Water-Vaporproof or Waterproof, Flexible MIL-S-21568 Silicone Fluid, Dimethyl Polyeiloxane Provided by IHSNot for ResaleNo repro
4、duction or networking permitted without license from IHS-,-,- MIL-S-82529 33 9999906 0363727 5 m .- - e- _. WlX-82529 (OS) STANDARDS FEDERAL FED-STD-102 MILITARY MIL-STD-1OSD MI L-STD- 129 MIL-STD- 167 DRAWINGS Bureau of Naval Weapons LD 540562 Preservation, Packaging, :!nd Packing Levels Sampling P
5、rocedures and Tiblcs or Inspection by Attributes Marking for Shipment :ind Slorage Mechanical Vibrations of Shipboard Equipment Switch, Thermal Mark SG Mod I, :ind all documents listed thcrcxon (Copies of specifications, standards, drawings, and publicitions rcqucstcad by contractors in connection w
6、ith specific procurement functions should be ob- tained from the procuring activity or as directe by the contracting officer.) 3. REQUIREMENTS 3.1 General requirements. Unless otherwise specified in thc cwntrtct or order, :ill materials and treatments of materials and piirts used in hc manu- facture
7、 of the switch shali be in accordance with the requirements swcified herein and with the applicable documents listed in BuWeps LD 5405G2. order, preproduction samples of the switch shall be manufactured using thc meth- ods and procedures proposed for production. The sample shall be tcstcd as specifi
8、ed in Section 4 herein and is for the purpose of determining thtt, prior to starting prcuction, the contractors production methods are capiblc of yielding items that comply with the technical requirements of the contract. 3.3 Performance and product characteristics. The switch shall meet the followi
9、ng performance and product characteristics. 3.3.1 Insulation resistance. After being conditioned at II temperature of 75 plus or minus 5 degrees Fahrenheit (F) and a relative humidity of 75 plus or minus 5 percent for a period of not less than twenty-four hours, the insulation resistance shall not b
10、e lesa than 100 megohms. When the insulation resistance is measured during or subsequent to the environmental tests specified in 3.2 Preproduction samples. Unless otherwise specified in thc contr:ict or Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
11、-MIL-S-82529 33 W 9999906 O363728 7 . . MIL-S-82529 (OS) 4.5 there shall be no temperature or humidity conditioning other than that re- quired by the individual environmental test and the insulation resistance shall then be 20 megohms mir .;mum. The test potential shall be 500 plus or minus 50 volts
12、 DC. The insulatior- resistance shall be measured between the following mu- tually insulated points: a. Case b. Each of the three independent normally closed circuits. 3.3.2 Electric21 continuity and circuit resistance. The three independent, normally closed circuit, shall be continuous and each ind
13、ividual circuit resis- tance shill be less than O. 10 ohm. . 3.3.3 Funztion. The switch shall maintain electrical continuity of the three indcpndcnt circuits at temperatures less than plus 165 degrees F and shall break continuity of these circuits within 12 minutes at a temperature of plus 240 de- g
14、rcos F. After interru-ting the circuits, the switch shall maintain all circuits pcrninnciitly opcn withoix electrical continuity under the conditions specified in 4, (i. 2, 3. :I. shall iw c;ipiihlc of cmforniing to the performance and product Characteristics of this spccificntion aftcr being expose
15、d to the environments and all conditions spccificd hcrcin. 3.4 Envi iwnmental reyuiremcnts. Unless otherwise specified, the switch 3. 4. 1 re niperalure. 3. !. i. 1 Storage condition. The switch shall withstand teinperaturcbs from minus (i5 to plus 160 degrecs F, :I. 4.2 Vibration. 3.4. L. 1 Standby
16、 condition. The switch shall withstand vibration as speci- :l. 1.2, I Operating condition. The switch shall withstand vibration through fiod for lypc I tquipment in MIL-STD-1Gf up to 25 cycles per second (cps), a frcqucnc-y imgc of 20 to 2000 cps at O. 10-inch double amplitude or log (g unit of giwi
17、talional acceleration), whichever is less. . The switch circuits shall reiuain closed during vibration and thereafter the switch shall meet the perfor- mance and product characteristics of this specification. 3.4.3 Shock. 3.4.3. 1 Standby condition. The switch shall withstand shocks of 4Og peak magn
18、itude. fie shock shall have a pulse shape approximating a one-half sine wave having a duration of 5 milliseconds. 3.4.3.5 Operating condition. 3.4.3.2.1 Major. The switch shall withstand a shock of 2400g peak magni- tude in the direction shown in Figure 1. The shock shall have a pulse shape ap- prox
19、imating a one-half sine wave having a duration of 1 millisecond, Thereafter the switch shall meet the performance and product characteristics of this specifi- cation, except for the functional requirement of 3.3.3. Provided by IHSNot for ResaleNo reproduction or networking permitted without license
20、from IHS-,-,-MIL-S-2529 13 W 9999906 03bL727 9 EIL-S-82529 (OS) Figure 1. Environmental Teeting Axe8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. “ . MIL-S-2529 13 7997706 03b1730 5 W - MI-!3- Workmiinship. The workmanship and finish shall be of
21、 sufficiently high gr:idc lo itssure satisfacton operatloacoaeiateatwith the requirements of this spccificnli(ai. All parts used in the assembly shall be thoroughly clean and free of C.YCCSS ni:ttcrinls, chips, and loose or splattered foreign materials, Thc st;indnrds of workmmship exhibited in any
22、approved preproduction sample, sub- ject to tiny rlualificiition stated in the Governments notice of approval, shall be determin:itivcI of the requirements of the contract relative to workmanship inso- far :is not spwificnlly covered by iipplicible specifications. 4. QUALITY ASSURANCE PROVISIONS 4.1
23、 Rcwpmsibility for inspection. Unless otherwise specifie in the contract or purch:isc* ordcr, the supplier is responsible for the performance of (ill inspcc- tion rcyuircmcnts as specified herein. Excepf as otherwise specified, the suppli- cr may utilizc his own facilities or :my commercial laborato
24、ry acceptable to the Governmcmt. The Government reserves the right to perform any of the inspcfctions set forth in hc Rpecificiition where such inspections are deemed necessary to :is- suie supplicw iind services conform to prescribed requirements. 4.2 C1:issification of inspection. Inspection of th
25、e switch shall be clnssi- ficd its follows: :i, Preproduction :ind periodic production inspection. (See 4.5.) b. Quiility conformance inspection. (See 4.6.) 4.3 Sampling. (%e 6.2.1.) 4.3.1 Lot size. The term “lot“ shall mean “inspection lot“, that is a collection of product Rubmitted by a supplier f
26、or inspection. Unless otherwise specified in the contract or ordcr the number of product in each lot shall be three hundred (300) . 4.3.2 Premxuction sample. A preproduction sample of ten (10) switches, manufactured in accordance with 3.2, shall be subjected to the preproduction tests Provided by IH
27、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-2527 33 = 777770b 0363733 7 W MIL-S-82529 (OS) detailed in 4.5. Acceptance of the preproduction san?!.c zkll bc bzz:?2 c: :;o defects in the sample. Further production of the switch bJ tk :p$!:* ;:rica ta appro
28、val of the preproduction sample, shall be at the :lp?!kz riske 4.3.3 gerLodic Dit.- From each succeec3nZ hi (Y 4hrw hua- dred (300) or less, a random sample of ten (10) switches sbll 5: z:iciS,?- tractor shrill : a. Determine the cause of the defect. , t- * - (See Tabie I.) F- I- Quality Conformance
29、 Inspection 4.6 3 * i, Acceleration 4.5.1.2 A -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. ., . T.?12 i, I L_J ._- uuc MIL-S-2527 33 = 7777706 036373F 7 W Lion and Periodic Production Test Sequence (Con inued) 4.5.1.6.2 2 4 Capabilitv O to 0.
30、10 ohm; accuracy S pcrcent + Conditioning chamber Maintain temperature at plus 75 plus or minur 5 degrees F and a relative humidity of 75 plus or minus 5 per- cent . 0.00 to 100 megohms; accuracy 10 percent at 20 and 100 megohms with 500 plus or minus 50 volts DC potential 6. Tezi:it.ur chamber Main
31、tain temperature at 165 plus O miaus 5 degrees F, 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-S-8F527 33 m 7774906 0363733 O MIL-S-82529 (OS) Equipment Capability bath with immersion type plus 5 minus O degrees F. Provide heater and proport
32、ional means of supporting 3 thermometers, type temperature holding an oil stirrer, and the switch in the control; minimum fluid positions shown in Figure 2. Heat- capacity of 6 gallons ing element shall be located eo that distance between heating element and the switch is not less than 2 inches. e.
33、Constant temperature oil Maintain fluid temperature at 240 f. Heating oil Silicone fluid, dimethyl polysiloxane as specified in MIL-S-21568; vis- cosity of 50 centietokes at 77 degrees F; FSN 9150 664 0047 g. Stirrer Conform to Figure 3. h, Stirrer drive unit Maintain stirrer rotation rit 200 plus o
34、r minus 25 rpm. i. Three calibrated precision Measure temperature from 230 to 250 degrees F with an accuracy of plus or minus 0.3 degrees F. thermometers (not total immersion type) j. Calibrated timer Measure O to 15 minutes with accura- k. High temperature chamber Maintain temperature at 400 plus o
35、r cy of plus or minus 5 seconds. minus 20 degrees F. 4.4,Z Pruproduction and periodic production test equipment. The foliow- ing items of test equipment in addition to selected items of quality conformance inspection equipment, and pieces of equipment recommended by applicable spccificatioiis or sta
36、ndards referenced within test procedure paragraphs, are required to perform the preproduction and periodic production tests: Equipment Capability a. Temperature chamber Maintain temperature at: Minus 65 plus 5 minus O degrees F Plus 160 plus O minus 5 degrees F 8 Provided by IHSNot for ResaleNo repr
37、oduction or networking permitted without license from IHS-,-,- .uIL-S-2529 13 9999906 0361734 2 I * . - . EciuiDment MIL-S-82529 (OS) Capability b. Vibration testing Control frequency from 20 cps to 2000 cps while subjecting a test item to O. 10- inch double amplitude or log occelera- tion, whicheve
38、r is less; maintain direc- tion of vibration along specified axee. Apply shocks of 40 plus or minus 4g; a one-half aine wave pulse shape having a time duration of 5 plue 3 minus O milliseconds; maintain direction along specifled axes. machine c. Shock, equipment, a one-half sine wave pulse shape of
39、1 plus or minus O. 25 millisecond time duration; maintain direction along specified axes. operating C. Centrifuge O to 27.5g; maintain acceleration at 25 plus 2.5 minus Og. f. DC power supply Regulate direct current at 15 plus O minus 2 amperes, and 1 plus 0.0 minus O. 1 ampere through test item loa
40、d (O. 10 ohm maximum). O to 1.5 volts, and O to 0.5 volt DC; accuracy plus or minus 3 percent current regulated g. Voltmeter 4.5 Preproduction and periodic production inswctions. The preproduction and periodic production samples shall be subjected to the tests specified in 4.5.1 after satisfactorily
41、 passing the quality conformance inspections of 4.6.2.1, 4.6.2.2, 4.6.2.3.1, and 4.6.2.4. 4.5.1 Test procedure. Subject the switch to the test sequence listed in Table 1. Unless otherwise specified in the individual test paragraph, the quality conformance hepection, as specified in Table I, shall be
42、 performed susbsequent to environmental tests under test conditions specified in 4.6.1. Failure of the switch to pass any one of these tests shall constitute a defective unit. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-82529 13 I 7797706
43、 03bL735 4 MIL-3-82529 (OS) HEATER CONTROL 1 BELOW OIL THERMOMETER SEE FIG. 4 FOR WIRING THERMOMETER MID DEPTH THERMOMETER DRIVE UNIT FOR STIRRING NOTE: ALL DIMENSIONS 1“ FRCM BOTTOM CE ARE IN INCHES. OIL SURFACE SEEFIG. 3 FOR DETATL OF STIRRER / II SEE FIG. 5 FOR IMMERSION DEPTH LOW RESETANCE MEASU
44、RING DEVICE II Aw- Ilr- O0 / THERMAL SWITC H Figure 2. Temperature Functioahg Teat Ecpipment Arrangement 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-82527 13 m 77777Ob 03Li173b b M _ . - . 3/47 1/2 It”/47 * T, 12 4 cf b1/4 DIA 1/16 THICK
45、 ME-S-82529 (OS) NOTE : SHALL BE OF SUFFICIENT LENGTH TO MOUNT TO DRIVE UNiT AND SUSPEND BLADE 1 INCH BELOW BASE OF THERMAL SWITCH. IN MCHES. THE !/4 DIA ROa) ALL DIMENSIONS ARE Figure 3. Detail of Oil Stirrer . . THERMAL SWITCH L E.4 DS TO LOW RESISTANCE MEASURING DEVICE WHITE BIIJE nROW WHITE GREE
46、N ORANGE Figure 4. Wiring Diagram, Thermal Switch Leads to Low Resistance Measuring Device 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-82527 13 7477706 0361737 = MIL-S-82529 (OS) RUBBER NIPPLE OIL SURFACE I 16 SWITCH HOUSING Figure 5. De
47、pth of Immersion 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. . . _. . . 4,5.1.1 Temperature, storage condition. The mitch shall be subjected to a temperature of minus 65 plus 5 minus O degrees F for not less than 48 hours. The temperature sh
48、all be raised to plue 160 plus O minus 5 degrees F in not less than 2 hours and maintained at this temperature for not less than 48 hours. The unit shall then he subjected to room temperature for not less than 2 hours prior to performing subsequent tests, 4.5.1.2 Acceleration. The swich, mounted as shown in Figure 6, shall be subjoctctl to acceleration of 25 plus 2.5 minus Og in the direction shown in Figure 1 for not less than 4 seconds. Monitor the switch circuits during accel- eration; tho switch circuits shall remain closed during acceleration and there-
