1、MIL-R- 83722 (USAF) 12 April 1968 MILITARY SPECIFICATION RELAY, TELEGRAPH, ELECTRO-MECHANICAL GEmRAL SPECIFICATION FOR 1. SCOPE 1.1 This specification covers the general requirements for electro-mechanical relays (see 6.3.1) for use in telegraph circuits and associated equipment, 1. 2 Classification
2、. 1.2.1 Military part number, The military part number shall consist of the letter IM, It the basic number of the specification sheet, and an assigned dash number (see 3.1) as shown in the following: Military Specification sheet Dash designator number number 2. APPLICABLE DOCUMENTS 2.1 The following
3、 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 specified herein. SPECIFICATIONS FEDERAL QQ-2-325 - PPP-B-566 - PPP-B-636 - PPP-B-676 - PPP-F-320 - PPP-T-60 - PPP-T-76 - Zinc Coating, Electrodeposited, Requirem
4、ents For. Boxes, Folding, Paperboard. Box, Fiberboard. Boxes, Setup. Fiberboard; Corrugated and Solid Sheet Stock Tape: Pressure- Sensitive Adhesive, Waterproof, Tape, Pressure-Sensitive Adhesive Paper, (Container Grade), and Cut Shapes, for Packaging. (For Carton Sealing). MILITARY MIL-P-116 - Pres
5、ervation, Methods of. MIL-W-583 - Wire, Magnet, Electrical. MIL-C-45662 - Calibration System Requirements, STANDARDS MILITARY MIL-STD- 15-1A - Graphic Symbols For Electrical and Electronic Symbols. MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. Provided by IHSNot for Resa
6、leNo reproduction or networking permitted without license from IHS-,-,-MIL-R- 83722 (USAF) MIL-STD-129 MIL-STD-130 MIL-STD- 143 MIL-STD-202 - Test Methods for Electronic and Electrical MIL-STD-454 MIL-STD-456 - Marking for Shipment and Storage. - Identification Marking of US Military Property. - Spe
7、cifications and Standards, Order of Precedence for the Selection of. Component Parts. Equipment. - Standard General Requirements for Electrical - Electronic Parts, Data and Source Coding For. (Copies of specifications; standards, drawings, and publications required by suppliers in connec- tion with
8、specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer, ) 2.2 Other publications, The following document forms a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invi
9、tation for bids or request for proposal shall apply. NATIONAL BUREAU OF STANDARDS Handbook H28 - Screw-Thread Standards for Federal Service. (Appication for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, D. C. 20402. ) 3. REQUIREMENTS 3.1 Speci
10、fication sheets, The individual item requirements shall be as specified herein and in accordance with the applicable specification sheets. In the event of conflict between requirements of this specification and the specification sheets, the latter shall govern (see 6. 2). 3. 2 Qualification and prep
11、roduction. 3.2.1 Qualification of relays covered by specification sheets. Relays furnished under this speci- fication and covered by specification sheets shall be products which are qualified for listing on the applicable qualified products list at the time set for opening of bids (see 4.4 and 6.4).
12、 3.2.2 Preproduction inspection of relays not covered by specification sheets. Relays furnished under this saecification and not covered bv specification sheets shall be products which have passed the preprodiction inspection specified (see 4: 5). This preproduction inspection shall be performed aft
13、er award of contract and prior to production (see 6.4). 3.3 Selection of specifications and standards. Specifications and standards for necessary com- modities and services not specified herein shall be selected in accordance with MIL-STD- 143. 3. 4 Materials. The materials shall be as specified her
14、ein or a suitable material shall be used which will enable the relays to meet the performance requirements of this specification. When re- quired by the contract or purchase order (see 6.2), the supplier shall furnish a certification that materials used in fabricating the relays are in accordance wi
15、th the specified requirements, and are the same materials used in fabricating the qualification samples. Acceptance or approval of any constituent material shall not be construed as a guaranty of acceptance of the finished product. 3.4.1 Fungus-resistant materials. Nonmetallic parts of the relay sha
16、ll be inherently nonfungus- nutrient or treated to resist fungus growth. 2 I I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-R-B3722 57 W 737770b O080387 7 I MIL-R-83722 (USAF) 3.4.2 Metals. All metal parts, shall be of a corrosion-resistant t
17、ype, or shall be plated or treated to resist corrosion, Cadmium plating shall not be used for plating any part of the relay while zinc and unfused tin plating shall not be used for plating internal parts of the relay, Zinc plating shall be in accordance with class I, type II of QQ-2-325. 3.4.2.1 Dis
18、similar metals. When dissimilar metals, as defined in MIL-STD-454, requirement 16, 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 electrolytic corro- sion (particularly b
19、rass, 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 by a suitable insulating material is al
20、so permitted. two years withomepreciation in operating characteristics or reliability. by MIL-W-583 is required because of size or temperature range, other wire may be used. 3.4.3 Shelf life. The selection of materials shall be such as to provide a shelf life of at least 3.4.4 Magnet wire. Magnet wi
21、re shall conform to MIL-W-583, except that when wire not covered 3.5 Design and construction, Relays shall be of the design, construction, and physical dimensions specified (see 3.1). 3.5.1 Enclosure. The enclosure shall be of the type and within the dimensional limits specified on the applicable sp
22、ecification sheet (see 3.1). Relays shall be designed so that when the cover is removed, the operation of the relay shall not be altered, Unless otherwise specified (see 3. 1) the case shall be electrically connected to pin 5. 3.5.2 Soldering. When soldering is employed, the use of flux shall be avo
23、ided whenever possible. if the use of flux is warranted, only non-corrosive fluxes shall be used unless it can be shown that non-destructive methods can eliminate all traces of corrosive elements after soldering. Soldering shall be in accordance with requirement 5 of MIL-STD-454. 3.5.3 Weight. The w
24、eight shall be as specified (see 3.1). 3.5.4 Threaded parts, All threaded parts shall be in accordance with Handbook H28. Whenever practical, all threads shall be in conformity with the coarse-thread series, The fine-thread series shall be used only for applications that might show a definite advant
25、age through their use. Where a special diameter-pitch combination is required, the thread shall be of American National Form and of any pitch between 16 and 36 which is used in the fine-thread series, 3.5.5 Adjustments. Relays having adjustable features shall be so designed that the setting of any r
26、elay adjustment will not be altered by any test specified herein. component parts such as contacts, coils, springs, shims, etc. , can be easily replaced (or repaired) and the unit can be readily readjusted to serviceable condition. 3.5.7 Operating power, The relay operating power shall be derived on
27、ly from the incoming signal When tested as specified in 4.7.2, the relays shall withstand 3.5.6 Maintainability. When specified, relays shall be so designed and constructed that their line, and bias line where bias current is required. the applications of the specified voltage without damage or brea
28、kdown, Leakage current shall not exceed 1 milliampere (ma) root mean square (rms). 3.6 Dielectric withstanding voltage. 3.7 Insulation resistance, When relays are measured as specified in 4.7.3, the insulation resis- tance shall be 500 megohms or greater. 3 Provided by IHSNot for ResaleNo reproducti
29、on or networking permitted without license from IHS-,-,-MIL-R- 83122 (USAF) 3.8 Electrical characteristics, 3.8.1 DC coil resistance. When relays are tested as specified in 4. I. 4. 1, dc coil resistznce shall be as specified (see 3.1). 3.8.2 Sensitivity. When relays are tested as specified in 4. I.
30、 4.2, the mark and the space con- tacts shall close with the specified current (see 3.1). 3.8.3 Gravitational effects. When relays are tested as specified in 4, I. 4.3, unless otherwise specified they shall conform to the sensitivity requirements specified in 3.8. 2. action shall not cause the sensi
31、tivity to change more than the specified amount (see 3.1). initially shall not exceed O. 5 millisecond (ms) and effective bounce time (see 6.3.11) shall not exceed O. 2 ms. 3.8.4 Magnetic inter-action When relays are tested as specified in 4. I. 4.4, magnetic inter- 3.8.5 Contact bounce, When relays
32、 are tested as specified in 4.7.4.5, bounce time (see 6.3.10) 3. 8.6 Break time. When relays are tested as specified in 4. I. 4.6, break time (see 6.3.14) shall not exceed 10 percent of total cycle time. 3.8. I Bias distortion. When tested as specified in 4.7.4. I, bias distortion initially shall no
33、t exceed i2 percent. 3.8.8 Bias compensation. When tested as specified in 4. I. 4.8, relays shall show capability of introducing 10 percent space bias, O percent bias and 10 percent mark bias, in each case with chatter not to exceed 12 percent from the mean bias, 3.8.9 Contact overload and input ove
34、rdrive, When tested as specified in 4, I. 4. 9, relays shall operate satisfactorily. Following the test, sensitivity shall be as specified (see 3. 1). 3.8.10 Operating speed. When tested as specified in 4. I. 4. 10, relays shall operate satisfactorily 3. 8.11 Contact resistance. When relays are test
35、ed as specified in 4. I. 4.11, the resistance of at speeds up to 120 Hz and the bias distortion shall not exceed i5 percent. any pair of mated contacts shall not exceed O. 5 ohm. 3. 9 High and low temperature operation. When relays are tested as specified in 4.8, unless otherwise specified (see 3. i
36、), the bias distortion shall not differ by more than 2 percent from the value measured at room temperature, Following the test, the relays shall be free of mechanical defects and shall meet the requirements of Sensitivity, contact bounce, break time, and bias distortion as specified in 3.8.2, 3. 8.5
37、, 3.8.6, and 3.8. I, respectively. evidence of corrosion. Following the test, the relays shall meet the requirements of dielectric withstanding voltage and insulation resistance as specified in 3.6 and 3. I, respectively. 3.10 Salt spray (corrosion). When relays are tested as specified in 4.9, there
38、 shall be no 3.11 Terminai strength. When relays are tested as specified in 4.10, the terminals shall not loosen nor shall there be any other damage. Bending of the terminals shall not be construed as damage provided that they can be reformed in a manner to permit proper mating with the socket. 3.12
39、 Moisture resistance. When tested as specified in 4.11, there shall be no evidence of distortion as determined by visual inspection, Following the test, the relays shall meet the require- ments of insulation resistance, dielectric withstanding voltage, and sensitivity as specified in 3.6, 3. I, and
40、3.8.2, respectively. I B LA I - _c 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-83722 59 7999906 0080389 O MIL-R- 83722 (USAF) 3.13 Vibration. When tested as specified in 4.12, vibration at 10Gs acceleration at frequencies up to 500 Hz sha
41、ll not impair operation. Unless otherwise specified, bias distortion shall not change more than *4 percent, Following the functional vibration test, the relays shall be free of any observable damage and shall comply with sensitivity requirements specified in 3.8.2. 3.14 Shock, medium impact. When re
42、lays are tested as specified in 4.13, there shall be no evidence of loosening of parts. Following the shocks, sensititivy and bias distortion shall be as specified in 3.8.2 and 3.8.7, respectively, evidence of leakage in excess of 1 x 10-8 standard cubic centimeters per second or 1 x cubic centimete
43、rs per second as specified (see 3.1). All contactsf the relay shall be subjected to at least 500 million cycles of rated contact load. Following the test, relays shall meet the following requirements: Contact resistance Sensitivity - - - - - - - - - Shall not exceed 2-1/2 times Bounce time - - - - -
44、 - - - Shall not exceed 2 times the 3.15 Seal (when applicable). When relays are tested as specified in 4.14, there shall be no standard 3.16 Life. When relays are tested as specified in 4.15, there shall be no more than 10 misses. - - - - Any pair of mated contacts shall not exceed 1. O ohm, the sp
45、ecified current. initial limits specified in 3.8.5. Break time - - - - - - - - Shall not exceed 10 percent of total cycle time, Bias distortion- - - - - - - Shall not exceed 15 percent. 3.17 Marking. The following information shall be marked on the relays in accordance with MIL-STD-130. Symbols shal
46、l be in accordance with MIL-STD-15. As a minimum, the following information shall be included: (a) Part number. (b) Circuit diagram showing contacts and input-output symbolism with necessary (c) Maixfacturers name. (d) Date code in accordance with MIL-STD-456. terminal identification. 3.17.1 Militar
47、y part number. The military part number shall be in accordance with 1.2.1. 3.18 Workmanship. The relays shall be fabricated in such a manner as to be uniform in quality, and shall be free from defects that will affect life, serviceability, and appearance. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsi
48、bility 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, the supplier may utilize his own facilities or any commercial laboratory acceptabIe
49、to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4. 1. 1 Test equipment and inspection facilities. The supplier shall establish and maintain a calibration system in accordance with MIL-C-45662. I 5 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-8372
