ECA 480-1981 Toggle Switches《拨动开关》.pdf

1、A 480 81 m 323VbOO 0070957 8 m . O kN#IIIA RI-180-1081 APPROYIED JULY 6,1981 P TOGGLE SWITCHES I EIA STANDARD a Engineering Department ECTRONIC INDUST RS-480 JULY 1981 RIES ASS OCIATIOH EIA 480 BL m 3234b00 0070958 T m r - NOTICE EIA Engineering Standards and Publications are designed to serve the p

2、ublic interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards an

3、d Publications shall not in any respect preclude any member or non-member of EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than EIA members, whether

4、the standard is to be used either domestically or internationally. Recommended Standards and Publications are adopted by EIA without regard to whether or not their adoption may involve“ patents on articles, materials, or processes. By such action, EIA does notassume any liability to any patent owner

5、, nor does it assume any obligation whatever to parties adopting the Recom- mended Standard or Publication. This Standard contains the major technical content of International Electro Technical Commission recammendation - 131-1, Toggle Switches, 1962. It differs from IEC recommendation 131-1 in cert

6、ain important respects, as given in Appendix B hereto. These differences have been called to the attention of the U.S. Committee of Experts for IEC Technical Committee 48C, Switches, and resolution of these differences will be sought in future meeting of TC48. . Published by ELECTRONIC INDUSTRIES AS

7、SOCIATION Engineering Department 2001 Eye Street, N.W. Washington, D.C. 20006 Copyright 1981 ELECTRONIC INDUSTRIES ASSOCIATION All rights reserved PRICE: $7.50 Printed in U.S.A. e Paraqraph Introduction EIA 4BO 81 3234600 0070959 II 1.0 2.0 3.0 4.0 5.0 6.0 7.0 TABLE 1: TABLE 2: RS-480 TOGGLE SWITCHE

8、S TABLE OF CONTENTS Paqe 1 cope Applicable Documents Definitions Design Requirements Performance Requirements Qualification Tests Quality Conformance Inspection Qualification Tests Quality Conformance Inspection 2 2 3-4 5-6 7-16 17 19 18 19 TABLE Al: Ctandard Switching Characteristics 21 FIGURE Al:

9、Terminal Locations 20 FIGURE A2: Locking Combinations 22 APPENDIX A: Standard Switching Circuits 20 23-24 APPENDIX 6: Comparison with IEC Publication 131-1 - -1- EIA 480 81 3234b00 0030960 8 W RS-480 Page 1 TOGGLE SWITCHES (From EIA Standards Proposal No. 1242, formulated under the cognizance of EIA

10、 P-5.8 Working Group on Slide, Rocker and Toggle Switches.) INTRODUCTION This EIA Standard was formulated for the purpose of: (a) (b) Eliminating misunderstandings or confusion between manufactureres and .buyer with Promoting interchangeability of toggle switches, and respect to product performance

11、values. This Standard applies to toggle switches intended to be installed in control circuits or au- xiliary circuits of electronic equipment or other equipment employing simiIar techniques. This Standard must be used in conjunction with a detail specification which defines specific values for the p

12、erformance of the Standard and may add, delete or modify the requirements of the Standard. The buyer may utilize the Detail specifications issued by EIA, or, if necessary, prepare his own detail specification which references this Standard. The EIA Detail Specifications assign a unique part number t

13、o each particular switch configuration covered by the Detail Specification. This part number is adequate to use for procurement of a standard switch. Within the context of this EIA Standard, a standard switch is considered to be a switch which is described by an EIA Detail Specification, and a non-s

14、tandard switch is considered to be a switch which is not described by an IA Detail Specification. When a description of a non-standard switch is required, the manufacturer or buyer should prepare a detail specification which fully describes the non-standard switch. If the required non-standard switc

15、h differs from the switch types described by EIA Detail Specifications, a complete detail specification should be prepared, If the required non-standard switch is similar to the switch types described by the EIA Detail Specification, a detail specification may be prepared by referencing the part num

16、ber of the standard switch and specifying the difference required from the standard switch. EIA 480 81 m 323460 00709b1 T m RS-480 Page 2 1.0 2.0 SCOPE These recommendations relate to toggle switches for use in equipment for electrical and electronic devices, including switches necessary to connect

17、the supply mains. These switches are not intended to be used in electrical distribution systems. Switches covered by these recommendations have a rated voltage not exceeding 600 volts and a rated current not exceeding 25 amperes (dc or rms values), APPLICABLE DOCUMENTS The following documents of the

18、 issue in effect form part of the standard to the extent specified. 2.1 2.2 2.3 2.4 2.5 International Electrotechnical Commission Publication 131-1 Toggle Switches, Part I, General Requirements and Measuring Methods. GSA Standards (Government Services Administration) FED-STO-28 Screw Thread Standard

19、s for the Federal Government. American National Standards (ANSI) 2 310.1 Determining Resistance of Synthetic Polymeric Materials to Fungi. Electronic Industries Association (EIA) RS-186-9E METHOD 9: Solderability RS-186-E I Standard Test Methods for Passive Electronic Component Parts - General Instr

20、uctions and Index of Tests RS-448 Standard Test Methods for Electromechanical Switches Underwriters Laboratories U.L. 94 Tests for Flammability of Plastic Materials. EIA 480 81 = 3234b00 0090962 1 . RS-480 Page 3 3.0 DEFINITIONS 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 Toqqle Switch: A swi

21、tch manually operated by moving a projecting lever through a small arc. Posit ion: (A mechanical location referring to actuator position.) A setting of the lever which results in a particular circuit condition. maintained when the externally applied actuating force is removed. A position may be mome

22、ntary or Operatinq Force: . The externally applied force required to move the switch actuator (lever or rocker) from one position to an adjacent position. Poles: The number of separate circuits which can carry current at the same time. Make Before Break: The open contacts close before the closed con

23、tacts open when the switch actuator is moved from one position to another. Break Before Make: The closed contacts open before the open contacts close when the actuator is moved from one position to another. Panel Sealed: When properly mounted, the switch prevents the entrance of liquids through the

24、panel mounting hole. Environmentally Sealed: The switch enclosure is sealed to prevent the entrance of the ambient environ- ment into the switching mechanism. Hermetically Sealed: The switch enclosure is sealed to be gas tight by fusion of glass or ceramic to metal, or metal to metal. Throw: Any tog

25、gle position where a moving contact(s) makes contact with a stationary contact(s). A single-throw switch makes contact in only one toggle position. A double-throw switch makes contact in two toggle positions. Clearance: Clearance denotes the shortest distance measured in air between electrically con

26、ductive materials. Creepaqe Distance: Creepage distance denotes the shortest distance over the surface of insulation between electrically conductive materials. EIA 980 81 3234b00 0070963 3 RS-480 Page 4 3.0 DEFINITIONS (continued) 3.13 3.14 3.15 3.16 3.17 3.18 3.19 Electrical Ratinqs: The electrical

27、 ratings of a switch are given for specified circuits by the combinations of voltage and current under which the switch shall operate satisfactorily under specified conditions for testing. Rated Voltaqe and Rated Current: The voltage and current which are marked on the switch shall be that at stand-

28、 ard atmospheric conditions. The relation between these is shown in the list of electrical ratings. Type: Switches of one type comprise components having similar design features (ex- clusive of any mounting accessories, provided they have no significant effect on the test results) and falling within

29、 the manufacturers usual range of ratings for sueh a design. Type Tests: Type tests are all the tests to be carried out on a number of specimens, with the object of determining whether this manufacturer can be considered to be able to produce components meeting the detail specif ication. Type Approv

30、all: Type approval is a certification by the switch manufacturer that he is able to produce in reasonable quantities components meeting the. detail cpecif ication. Acceptance Tests1: Acceptance tests are those tests carried out on all specimens or on a repre- sentative sample of the components of an

31、y consignment to ensure that their properties are within the limits of the specification. Factory Tests1: Factory tests are those tests carried out by the manufacturer to verify that his product meets the detail specification. As these recommendations only cover type tests, these definitions are inc

32、luded solely for information. EIA 480 81 I 3234b00 0070b4 5 I . RS-480 Page 5 a 4.0 DESIGN REQUIREMENTS 4.1 4.2 4.3 4.4 4.5 Switches shall be of the design, construction and physical dimensions -specified by the detail specification sheet, including: 4.1.1 Mounting Means 4.1.2 Electrical Termination

33、s 4.1.3 Ratings The detail specification shall specify: A. Rated Voltage(s) B. Rated Current(s) C. Circuit conditions and associated voltage and current. Materials shall be capable for meeting the test requirements. Threaded Parts: All removable threaded parts shall be in accordance with FED-STD-28.

34、 The unified series of threads shall be used wherever possible. Insulation Materials A. Flammability: Switch insulating materials shall be certified as meeting 94V-2 flammability requirements of U.L. 94 or better. B. Fungus Resistance: Switch insulating materials shall have a rating of O to 1 when t

35、ested in accordance with the fungus test of ANSI-Z310.1. Marking: The switches shall be legible marked with the following information: NOTE: Other markings may be applied to the switch provided they do not interfere with, obscure or confuse those markings specified below. When size, surface conditio

36、n, or other design considerations will not allow full marking on the part, the markings shall-be in the order of preference shown below. be applied to the switch shall be applied to the unit package. Any required marking which cannot 4.5.1 Terminal Identification 4.5.2 Manufacturers name, trademark,

37、 or code identification number. 4.5.3 Identification Either EIA part number, manufacturers part number, or users part number. RS-480 Page 6 4.5.4 4.5.5 4i5.6 4.5.7 EIA Y80 81 m 323YbOO 0070965 7 m Date Code The preferred date code is a four-digit number consisting of the last two digits of the year

38、and another two igits for the week of the year. For example, a date of 7820 denotes the switches were manufactured during the twentieth week of 1978. The manufacturer may use another date code system providing the system is described in the sources of product information published by the manufacture

39、r. Detail Specifications The individual switch requirements shall be as specified herein and in accordance with the applicable detail specification. conflicts between this Standard and the detail specification or other complementary documents, the detail specification shall govern. In the event of P

40、art Numbering Each switch covered by this Standard, in conjunction with a detail specification (see paragraph 3.1), shall be assigned a discrete part number consisting of the following: E - -O I Discrete switch identification from detail specification. Detail specification number associated with thi

41、s specification. This standard number. U.S.A NatiQnal S,tandards Organization. Electrical Rating(s) To be marked when specified. O EIA 480 81 H 3234600 00709bb 9 H . RS-480 Page 7 5.0 PERFORMANCE REQUIREMENTS Unless otherwise specified in the individual test method, all measurements and test are to

42、made under the following conditions: Temperature: +15oC to +35OC (+59F to 95OF) Relative Humidity: 45 to 75% Air Pressure: 86 to 106 kPa (650 to 800 mm of mercury) The switch shall be allowed sufficient time to reach thermal stability before performing measurements under standard atmospheric conditi

43、ons, All test and measurements shall be performed on switches as received from the supplier without any cleaning or other preparation except as may be specified by the individual test methods. When the test requires the switch to be mounted, the switch shall be rigidly mounted directly on a metal pl

44、ate by its normal mounting means. The mounting plate shall exceed the contour of the switch, including the terminations when they extend beyond the front panel plane profile of the switch. 5.1 Visual Inspection 5.1.1 Method of Measurement The switches shall be visually examined for manufacturing def

45、ects which would adversely affect serviceability. The marking shall be examined for correctness and legibility. 5.1.2 Standard The switch shall be manufactured in a careful and workmanlike manner. The markings shall be correct and legible. 5.2 Dimensional Examination 5.2.1 Method of Measurement The

46、specified dimensions shall be measured by appropriate means. 5.2.2 Standard The dimensions shall be in accordance with the detail specification. 5.3 Operating Characteristics 5.3.1 Method of Measurement The specified operating characteristics shall be measured by ap- propriate means. 5.3.2 Standard

47、The operating characteristics shall be in accordance with the detail specification. EIA 480 81 i 3234600 0070967. O RS-480 Page 8 5.4 Switch Resistance 5.4.1 5.4.2 5.4.3 NOTE: Definition Switch resistance is the total electrical resistance of the conducting parts of the switch which is determined by

48、 dividing the voltage drop across the switch terminations by the current flowing through the switch. Method of Measurement The switch resistance shall be measured in accordance with EIA Recommended Standard RS-448 “Standard Test Methods for Electro- mechanical Switches“ Method 1 (normal level). The

49、following details shall apply: 4 5.4.2.1 5.4.2.2 5.4.2.3 5.4.2.4 5.4.2.5 5.4.2.6 Method of Connection Between the terminals of the contacts of the same pole forming a switch circuit. Test Current 100 mA - +2%. Open Circuit Test Voltage 2 or 6 volts dc - +lo%. Number of Activations Before Measurements 4 maximum. Number of Test Activations 5. Number of Measurements per Activation 1. St and ard The switch resistance shall not exceed the value specified by the detail specification. For low current/low voltage values at or below 10 mA, 30 mV mo- difications of the measuring