1、-y EIA 407-A 78 m 3234600 00b7880 b m h_ d ANSI/EIA RS-407-A-78 Approved July 17,1978 FIA STANDARD $ 8 RSA407=A EIA/NARM STANDARD 5 rn TESTING PROCEDURES FOR RELAYS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT Y (Revision of RS-407) JULY 1978 Engineering Depcrttment ELECTRONIC INDUSTRIES ASSOCIATION EIA
2、407-A 78 3234600 00b788L 8 EIA engineering standards are designed to serve the public interest through eliminating mis- understandings between manufacturers and purchasers, facilitating interchangeability and improve- ment of products, and assistin the purchaser in selectfa and obtaining with minimu
3、m delay the clude any member or non-member of EIA from manufacturing or selling products not conformin to such standards, nor shall the existence of such standards preclude their voluntary use by those Oger than EA members whether the standard is t0.k used either domestidy or filternationally. Recom
4、mended standards are adopted by EU without regar to whether or not their adoption may involve patents on articles, materiais, .or procesm. By such ction, EIA duw not amtune any liability to any patent owner, nor does it amme any obligatioa whatever to parties adopting the recommended standards. This
5、 EIA Recommended Standard is considered to have international standardization implications, but the IEC activity has not progressed to the point where a valid comparison between the EU Recommended Standard and the IEC Recommendation be made. proper product for his partic I$ ar need. Exist- of mc a s
6、tandards shall not in my respect pre- Published by ELECTRONIC NDUSTRII ASSOCIATION Enginteering Depar tmeat 2001 Eye Street,.N, W, Washington, B. C. 28006 PRICE: $15.00 r- - . 2- EIA/NARM STANDARD TESTING PROCEDURES FOR RELAYS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT TABLE OF CONTENTS 1 . 2 . 3 . 4 .
7、 5 . 6 . 7 . 8 . 9 . 10 . 11 . 12 . Scope . 1 Standard Test Conditions 2 2.lGeneral 2 2.2 Standard Reference Conditions . 2 2.3 Accuracy of Measurements and Instruments 2 2.4 Performance of Tests 2 2.5 Sequence of Tests . 2 Visual and Mechanical Inspection 3 3.1 General 3 3.2 Requirements 3 3.3Proce
8、dure . 3 Mechanical Adjustments . 7 4.1General 7 4.2 Requirements 7 4.3Procedure. 7 Solderability . 8 5.1 Purpose 8 5.2 Apparatus . 8 5.3Materials. 9 5.4 Procedure . 9 5.5 Summary 11 Contactkesistance . 16 6.1 General . 16 6.2 Requirements 16 6.3 Procedure . 16 Insulation Resistance 18 7.1 General 1
9、8 7.2 Requirements 18 7.3 Procedure . 18 Dielectric-Withstanding Voltage 19 8.1General. . 19 8.2 Requirements 19 8.3 Procedure . 19 8.4 Precautions 19 Winding Resistance . 21 9.1 General 21 9.2 Requirements 21 9.3 Procedure . 21 9.4 Precautions 22 Winding Inductance . 24 10.1-General. . 24 10.2 Requ
10、irements . 24 10.3 Procedure . 24 Winding Impedance . 27 11.1 General 27 11.2 Requirements . 27 11.3 Procedure . 27 11.4 Precautions 28 Contact Bounce . 31 12.1 General . 31 12.2 Requirements . 31 12.3 Procedure . 31 i EIA 407-A 78 m 3234600 00b7883 L m r I . 3. 14 . 15 . 3.6. 17 . 18 . 19 . 20 . 21
11、 . 22 . 23 . 24 . TABLE OF CONTENTS (Cont) Pickup. Non.Pickup. Hold and Dropout Current or DC Relays . 13.1 General 13.2 Requirements . 13.3 Procedure . Pickup. Non-Pickup. Hold and Dropout Voltage or ACRelays 14.1 General. . 14.2 Requirements . 14.3 Procedure . Functioning Time 15.2 Release Time .
12、16.1 General 16.2 Requirements . 16.3 Procedure . High- and Low-Temperature Tests 17.1 General 17.2 Requirements . 17.3 Procedure . Thermal Shock . 18.1 General 18.2 Requirements . 18.3 Procedure . Mechanical Life 19.1 General 19.2 Requirements . 19.3 Procedure . Vibration . 20.1 Purpose 20.2 Requir
13、ements . 20.3 Procedure . 20.4 Final Measurements Shock . 21.1 General 21.2 Requirements . 21.3 Procedure . 21.4 Final Measurements Acceleration. . 22.1 General 22.2 Requirements . 22.3 Procedure . 22.4 Final Measurements . Humidity Tests . 23.1 General 23.2 Requirements . 23.3 Procedure . Winding C
14、orrosion (Polarization) 24.1 General 24.2 Requirements . 24.3 Procedure . 15.1 Operate Time . Leak Test for Hermetically Sealed Relays Voltage. 33 33 33 33 Current. 36 36 36 36 38 38 39 . 840 40 40 40 43 43 43 43 44 A4 44 44 46 46 46 46 49 49 49 49 50 53 53 53 53 54 57 57 57 57 58 60 60 60 60 63 63
15、63 63 . EIA 407-A 78 9 3234b00 0067884 3 .I 25 . 26 . 27 . 28 . 29 . 30 . 31 . 32 . 33 . 34 . TABLE OF CONTENTS (Cont) Crosstalk and Insertion Loss . 64 25.1 General 64 25.2 Requirements . 64 25.3 Procedure . 65 Salt Spray (Corrosion) . 66 26.1 General 66 26.2 Requirements . 66 26.3 Procedure . 66 W
16、inding Temperature Rise 69 27.1 General 69 27.2 Requirements . 69 27.3 Procedure . 69 Capacitance 71 28.1 General 71 28.2 Requirements . 71 28.3 Procedure . 71 Noise Produced By Relays. Including AC Hum . 72 Contact Life Test . 73 30.1 General 73 30.2 Requirements . 73 30.3 Procedure 73 30.4 Rated-L
17、oad Test Procedure . 74 30.5 Milliampere-Range Test Procedure . 77 30.6 Millivolt-Microampere-Range Test Procedure 78 Continuous-Contact-Current Test 79 31.1 General 79 31.2 Requirements . 79 31.3 Procedure . 79 Overload Test . 80 32.1 General 80 32.2 Requirements . 80 32.3 Procedure . 80 Contact No
18、ise . 81 33.1 General 81 33.2 Requirements . 81 33.3 Procedure . 81 ThermalEMF 83 34.1 General 83 34.2 Requirements . 83 34.3 Procedure . 83 Figures Fig . Fig . Fig . Fig . Fig . Fig . Fig . Fig . Fig . Fig . Fig . 5.1. 5.2. 5.3. 5.4. 6.1. 9.1. 10.1 11.1 11.2 11.3 12.1 . :. 12 . 13 . 1.4 . 15 . 16 .
19、 23 . 26 . 29 . 29 . 30 . 31 EIA Y07-A 78 = 323Yb00 00b7885 5 H TABLE OF CONTENTS (Cont) Figures Fig . Fig . Fig . Fig . Fig . Fig . Fig . Fig . Fig . Fig . Fig . 15.1 . 38 15.2 . 39 21.1 . 55 25.1 . 64 25.2 64 30.1 . 76 30.1A . 76 30.1B . 76 30.1C . 76 33.1 . 82 34.1 . 84 Tables Table Table Table T
20、able Table Table Table Table Table Table 1 Thermal-Shook Test Conditions . 44 1 Measurements After Vibration Test . 50 2 Sinusoidal Vibration . 51 3 Random Gaussian Vibration . 52 4 Complex Vibration . 52 1 Measurements After Shock Test . 56 2 Pulse Acceleration and Duration 56 1 Measurements After
21、Acceleration Test . 59 2 Acceleration Levels. Typical . 59 10 Pulsing Rate and Duty Cycle 74 1 Appendices Appendix A . Solid-state Contact Indicator . 85 Fig . Al Solid-state Contact Indicator . 85 Appendix B. Solid-state Chatter Detector 86 Fig . B1 Solid-state Chatter Detector . 86 A.l Description
22、 85 EIA LO-A 78 m 3234600 00b788b 7 m -L RS- 40 7-A Page 1 EIA/NARM STANDARD . TESTING PROCEDURES FOR RELAYS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT 0 (From EIA Standard RS-407 and Standards Proposal No. 1261, formulated under the cognizance of EIA Working Group P-5.7 on Relays.) 1. SCOPE 1.1 This s
23、tandard provides procedures for inspecting and testing trical, and environmental requirements of individual relay speci- fications. The standard is intended for relays that perform gen- eral switching functions in military and commercial systems: it is not applicable to the following electromagnetic
24、 switching devices, some of which are covered by other standards: , electromagnetic relays for the applicable mechanical, elec- Choppers Circuit breakers Contactors Motor-driven time-delay relays Relays associated with electric power apparatus Stepping relays Pneumatic and hydraulic relays Reed swit
25、ch relays (EIA Standard RS-436) Thermal relays Solid state relays (EIA Standard RS-443) 1.2 For the definition of the various relay terms cited in this publication refer to: (1) ANSI C83.16-1971 American National Standard Definitions (2) ANSI C42.0 American National Standard Definitions for and Term
26、inology for Relays for Electronic Equipment. Electrical Terms. 1.3 Related documents include: (1) ANSI Y32.2 Graphic Symbols for Electrical and Electronic Diagrams. (2) ANSI Y32.16 Reference Designations for Electrical and Electronic Equipment. (3) ANSI Y10.19 Letter Symbols for Units Used in Electr
27、ical Science and Electrical Engineering. EIA 407-A 78 3234b00 0067887 9 RS-407-A Page 2 2. STANDARD TEST CONDITIONS 2.1 General 2.1.1 The methods and measuring techniques Gsscr bed .derein are generally accepted procedures. Equivalent methods may be used if agreed upon by the manufacturer and user.
28、2.1.2 The applicability of the tests and methods cited herein depends upon the type of relay and its intended function. Re- quirements, applicable test procedures, and performance criteria, therefore, should be specified in the individual relay specifi- cations. The specifications shall also indicat
29、e whether data is to be recorded on a variable or attribute basis and shall list disposition instructions for the test data. 2.1.3 The values specified in this publication are those used and accepted in the industry. 2.2 Standard Reference Conditians The reference conditions for characteristics that
30、 are affected by atmospheric conditions shall be: I (i) Temperature 73.4 + 5.4OF (23OC - + 3OC) (2) Relative humidity 20-50 percent (3) Barometric pressure 29.5 + 1 inch Hg. (749.3 2 25.4 mm Hg.) (0.999 - + .O34 m Pa) Standard test conditions may be normal room ambient, provided meas- urements of ch
31、aracteristics affected by environment are corrected to standard reference conditions as applicable. 2.3 Accuracy of Measurements and Instruments Inaccuracies in measurements shall not be considered as effectively increasing the specified tolerances. Proper and efficient use of instruments of suffici
32、ent accuracy and suitable quality is essential. Instruments shall be calibrated and calibration records made avail- able if required. For pointer type instruments the required reading should reach at least 60 percent of the deflection range of the instrument to assure adequate reading resolution. I
33、2.4 Performance of Tests Suitable visual or automatic means for monitoring all tests shall be provided to assure that tests are conducted in accordance with the specified requirements. I 2.5 Sequence of Tests he sequence of environmental tests can produce varied results. The detailed specifications,
34、 therefore, should indicate the required sequence as determined by relay design and usage. RS-4 0 7 -A Page 3 3. VISUAL AND MECHANICAL INSPECTION 3.1 General This section specifies procedures for- visual and mechanical in- spection of relays and parts to determine their conformance with requirements
35、 that may be specified in the individual relay speci- fications. 3.2 Requirements The extent to which visual and mechanical inspection requirements may be specified depends on: (i) particular relay design, (2) manufacturing techniques and materials, and (3) .reliability and economic considerations.
36、3.3 Procedure When visual and mechanical inspection requirements are specified, the applicable procedures listed below shall be used. NOTE: Since the tests covered in 3.3.2 to 3.3.4 are destruc- tive, they shall be applied on a sampling basis only. 3.3.1 Workmanship Magnification up to 1OX may be us
37、ed in performing visual inspection for requirements controlling: (i) cracks, burrs, chips or filings, extraneous foreign mater- (2) clearances between fixed and moving parts, (3) irregularities such as scratches or nicks on contact surfaces, (4) contact alignment or registration, (5) cracks in glass
38、 terminal headers, (6) strength of welded or brazed joints, and (7) detection of foreign particles. ial or oil, weld and solder splatter, 3.3.2 Materials and Finishes Materials and finishes shall be tested in accordance with the applicable ASTM (American Society for Testing and Materials) or MIL Spe
39、cifications. 3.3.3 Joined Parts 3.3.3. 1 Brazed Parts Tests for presence of HC1 shall be made with a suitable pH indicator. by applying a force that produces deformation of the joined parts and then examining thejoint for evidence of cracking. Strength of brazed joints.-shall be tested EIA 407-A 78
40、m 3234b00 0067889 2 RS- 4 O 7-A Page 4 3.3.3.2 Welded Joints Strength of welded joints, except contacts, shall be tested by applying a force that causes the parts to be torn apart. Examination shall then be made to determine whether failure occurred at the weld. 3.3.3.3 Contacts In testing the stren
41、gth of the joint between contacts and springs, a shearing force shall be applied par- allel to the longitudinal axis. *Observations shall be made for perceptible movement of the contacts at the specified force. 3.3.4 Terminals of blass Headers Three types of tests may be specified for determining th
42、e strength of the terminal-to-glass seals of glass headers of hermetically sealed relays. These tests are twist, bend, or pull. The appli- cable method(s) shall be specified on the individual relay speci- fications. The assembly shall be tested for leakage before and after the applicable strength te
43、sts. After applying the specified test, terminals and glass headers shall be inspected for damage or looseness. 3.3.4.1 Pull Test A specified force shall be applied parallel to the longitudinal axis of the terminal using a force indicator having an accuracy of + 10 percent. The specified force shall
44、 be gradually ap- plied to the terminal and shall be maintained for a period of not less than 5 seconds nor more than 10 seconds. 3.3.4.2 Twist Test Terminals which are .O45 inch (1.14 nun) or less in diameter shall be subjected to 2 cycles of the following test: A torque-producing rotation or twist
45、ing of the terminal about its longitudinal axis shall be applied to the point of connection but not more than 1/4 in. (6.4 mm) from the glass bead. One test cycle shall consist of: (i) a 90 + 5O clockwise twist, (2) a 180+ 5 counterclockwise twist, and (3) a 90“ +-5O clockwise twist to restore the t
46、erminal to normal-position. * For riveted contacts, a specified torque shall be applied to de- termine the adequacy of staking. RS- 4 O 7 -A Page 5 3.3.4.3 Bend Test Terminals which are .O45 inch (1.14 mm) or less in diameter shall be subjected to 3 cycles of the following test: With a force applied
47、 1/4 in. (6,4 mm) from its base, the terminal shall be bent 90 + 5 in one direction and 180 C 5O in the reverse direction before being restored to its normal position. 3.3.5 Screws and Threads Threaded parts shall be measured for class of fit in accordance with AN Standard Screw Thread Gages and Gag
48、ing, B1.2-1966, and Military Standard General Specifications for Optimum Selective Series Standard Screw Threads, MIL-S-7742B, February 1968. i- . EIA 407-A 78 m 3234b00 00b789L O m RS-407-A Page 6 4. MECHANICAL ADJUSTMENTS 4.1 General This section specifies procedures to be used for the measurement
49、 of mechanical adjustments, where appl%cable. Mechanical adjust- ment requirements are not normally specified by a user and are included herein as reference for those Eew applications where the users need is best served by their inclusion. 4.2 Requirements The extent to which mechanical adjustment requirements are speciEied depends upon the relay design and the desired degree of control. In specifying these requirements, the point of application of force defined. Mechanical adjust- applicable only prior to and the point of measurements should be ment require
