1、BRITISH STANDARD BS CECC 96000:1987 Harmonized system of quality assessment for electronic components Generic specification: Electromechanical switches UDC 621.316.54.001.4BSCECC96000:1987 This British Standard, having been prepared under the directionof the Electronic Components Standards Committee
2、, was published underthe authority of the BoardofBSI and comes intoeffecton 31March1987 BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference ECL/21 Draft for comment 83/26674 DC ISBN 0 580 15809 8 Committees responsible for this British Standard The prepa
3、ration of this British Standard was entrusted by the Electronic Components Standards Committee (ECL/-) to Technical Committee ECL/21, upon which the following bodies were represented: British Telecommunications plc Electronic Components Industry Federation Electronic Engineering Association Ministry
4、 of Defence National Supervising Inspectorate Society of British Aerospace Companies Limited Telecommunication Engineering and Manufacturing Association (TEMA) The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Association of Control Manufac
5、turers TACMA (BEAMA Ltd.) BEAMA Ltd. Amendments issued since publication Amd. No. Date of issue CommentsBSCECC96000:1987 BSI 09-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword iii Text of CECC 96000 1 Publications referred to Inside back coverBSCECC96000:
6、1987 ii BSI 09-1999 National foreword This British Standard has been prepared under the direction of the Electronic Components Standards Committee. It is identical with CENELEC Electronic Components Committee (CECC)96000:1985 “Harmonized system of quality assessment for electronic components. Generi
7、c specification: Electromechanical switches”. This standard gives the terminology, quality assessment procedures and test and measurement conditions applicable to electromechanical switches. Any sectional and blank detail specification to be used in conjunction with this standard will select those t
8、ests which are considered appropriate and will also give more detailed information. This standard is a harmonized specification within the CECC system. This standard specifies the use of substances and/or test procedures that may be injurious to health if adequate precautions are not taken. It refer
9、s only to technical suitability and in no way absolves either the supplier or the user from statutory obligations relating to health and safety at any stage of manufacture or use. Terminology and conventions. The text of the CECC specification has been approved as suitable for publication as a Briti
10、sh Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full point on t
11、he baseline as the decimal marker. Cross-references. The British Standard which implements CECC00007, CECC00009, CECC00107, CECC 00109, and CECC 00111 is BS9000 “General requirements for a system for electronic components of assessed quality” Part1 “Specification of basic rules and rules of procedur
12、e”. IEC 117 has now been superseded by IEC617 which is identical with BS3939 “Graphical symbols for electrical power, telecommunications and electronics diagrams”. International Standards Corresponding British Standards IEC 68 BS 2011 Basic environmental testing procedures (Most Parts are identical)
13、 IEC 512 BS 5772 Basic testing procedures and measuring methods for electromechanical components for electronic equipment (Most Parts are identical) IEC 695 BS 6458 Fire hazard testing for electrotechnical products Part 2-1:1980 Section 2.1:1984 Glow-wire test (Identical) Part 2-2:1980 Section 2.2:1
14、984 Needle-flame test (Identical) ISO 1000-1981 BS 5555:1981 Specification for SI units and recommendations for the use of their multiples and of certain other units (Identical)BSCECC96000:1987 BSI 09-1999 iii The Technical Committee has reviewed the provisions of IEC27, IEC 50(581) 1978, IEC65, IEC
15、341-1 1973, IEC389-1 1972, IEC 389-1A1976 and IEC410, to which reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. IEC 65 is related to BS 415 “Specification for safety requirements for mains-operated electronic and related apparatus for
16、 household and similar general use”, and IEC410 is related to BS6001 “Sampling procedures and tables for inspection by attributes”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Com
17、pliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, theCECC title page, pages ii to iv, pages 1 to 24, an inside back cover and abackcover. This standard has been upda
18、ted (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.iv blankBSCECC96000:1987 ii BSI 09-1999 Contents Page Foreword iii Section 1. Scope 1.1 Scope 1 1.2 Switch classes included 1 1.3 Switch classes excluded 1 Secti
19、on 2. General 2.1 Related documents 1 2.2 Units, symbols and terminology 2 2.3 Standard and preferred values 4 2.4 Marking 7 Section 3. Quality assessment procedures 3.1 Primary stage of manufacture 7 3.2 Structural similarity 7 3.3 Qualification approval procedure 7 3.4 Quality conformance inspecti
20、on 8 3.5 Certified test records 8 3.6 Delayed delivery 8 3.7 Re-submission of rejected lots 8 3.8 Alternative test methods 8 3.9 Release for delivery before the completion of group B tests 8 Section 4. Test and measurement procedures 4.1 Standard conditions for testing 9 4.2 Optional reduction of te
21、sting 9 4.3 Individual test methods 10 4.3.1 General examination 10 4.3.2 Electrical continuity and contact resistance 11 4.3.3 Insulation 11 4.3.4 Voltage stress 12 4.3.5 Current carrying capacity 12 4.3.6 Dynamic stress 13 4.3.7 Impact stress 13 4.3.8 Mechanical strength 13 4.3.9 Endurance 15 4.3.
22、10 Overload 16 4.3.11 Climatic 16 4.3.12 Soldering 17 4.3.13 Mechanical operating characteristics 18 4.3.14 Sealing 18 4.3.15 Chemical resistance 19 4.3.16 Fire hazard 19 4.3.17 Capacitance 20 4.3.18 Illumination 20 4.3.19 Temperature response 20 Appendix A Test schedules for quality conformance ins
23、pection andqualificationapproval 21 Figure 1 Application of forces and torques for test 4.3.8.1 14BSCECC96000:1987 BSI 09-1999 iii Foreword The CENELEC Electronic Components Committee (CECC) is composed of those member countries of the European Committee for Electrotechnical Standardization (CENELEC
24、) who wish to take part in a harmonized System for electronic components of assessed quality. The object of the System is to facilitate international trade by the harmonization of the specifications and quality assessment procedures for electronic components, and by the grant of an internationally r
25、ecognized Mark, or Certificate, of Conformity. The components produced under the System are thereby accepted by all member countries without further testing. This specification has been formally approved by the CECC and has been prepared for those countries taking part in the System who wish to issu
26、e national harmonized specifications for ELECTROMECHANICAL SWITCHES. It should be read in conjuction with the current Regulations for the CECC System. At the date of printing of this document the member countries of the CECC are Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, th
27、eNetherlands, Norway, Portugal, Spain, Sweden, Switzerland and theUnitedKingdom, and copies of it can be obtained from the addresses shown on the blue fly sheet. Preface This generic specification was prepared by CECC WG24 “Switches”. It is based, wherever possible, on the Publications of the Intern
28、ational Electrotechnical Commission. The text of this specification was circulated to the CECC for voting in the document listed below and was ratified by the President of the CECC for printing as a CECC specification: The numbering of clauses of this specification does not fully comply with CECC004
29、00. Document Date of Voting Report on the Voting CECC(Secretariat)1391 November 1983 CECC(Secretariat)1540iv blankBSCECC96000:1987 BSI 09-1999 1 Section 1. Scope 1.1 Scope This Generic Specification relates to electromechanical switches intended primarily for use in telecommunications equipment and
30、in electronic equipment employing similar techniques. It is limited to switches with a rated voltage not exceeding500V (d.c. or a.c. r.m.s.) and a rated carrying current not exceeding25A. It specifies the terms, definitions, symbols, test methods and other material necessary to prepare detail specif
31、ications for these components in the CECC System. 1.2 Switch classes included The following classes of switch are covered by this specification, together with their sub-classes. NOTE 1The principal classes of switch listed have been classified according to mode of actuation; classification by other
32、features is permitted: for example, dual-in-line mounting. NOTE 2Each class of switch, inclusive of its sub-classes, is covered by one BDS. NOTE 3All classes of switch may have further sub-classification according to other features relating, for example, to direct or indirect actuation, the provisio
33、n of illumination or indication, time delay, mounting facilities, and method of termination. The detail specification shall clearly indicate such features. 1.3 Switch classes excluded The following classes of switch are not covered by this specification: relays; circuit breakers; optically activated
34、 switches; solid-state switches which are wholly electronic with no integral moving parts (for example touch-sensitive and proximity devices); waveguide switches; coaxial switches. Section 2. General 2.1 Related documents Class Examples of sub-class Lever (toggle) Rocker Joystick Rotary Thumbwheel (
35、edge-mounted) Key activated Sensitive (microswitch) Push-button Multicell Matrix Piano-key Keyboard Keypad Slide Non-mechanically activated Temperature Pressure CECC-00-007 Basic specification: Sampling plans and procedures for inspection by attributes CECC-00-009 Basic specification: Basic testing
36、procedures and measuring methods for electromechanical components CECC-00-107 Quality Assessment Procedures CECC-00-109 Certified Test Records CECC-00-111 Specifications and their HarmonizationBSCECC96000:1987 2 BSI 09-1999 NOTEUnless otherwise specified, the latest issue document is to be used. 2.2
37、 Units, symbols and terminology 2.2.1 General Units, graphical symbols and terminology shall, wherever possible, be taken from the following documents: Any other units, symbols and terminology peculiar to one of the components covered by this specification shall be taken from the relevant IEC or ISO
38、 document listed in 2.1. 2.2.2 Classification of switches For the purpose of this specification, switches are classified according to mode of operation of the actuator. Each class of switch is covered by a BDS. a) Lever (toggle) switch. A switch having an actuator in the form of a protruding lever w
39、hose movement about an axis parallel to the face of the switch from which it emerges results in the connection or disconnection of the switch terminations in a specified manner. IEC 27 Letter symbols to be used in electrical technology IEC 50 (581) 1978 International electrotechnical vocabulary (Ele
40、ctromechanical components for electronic equipment) IEC 65 Safety requirements for mains operated electronic and related apparatus for household use IEC 68 Basic environmental testing procedures IEC 117 Recommended graphical symbols IEC 341-1 1973 Push-button switches: General requirements and measu
41、ring methods IEC 389-1 1972 Thermostatic switches: General requirements and measuring methods 389-1A 1976 IEC 410 Sampling procedures and tables for inspection by attributes IEC 512 Electromechanical components for electronic equipment: basic testing procedures and measuring methods IEC 512-1 512-2
42、512-3 512-4 512-5 512-6 512-6A 512-7 512-8 512-9 1976 1976 1976 1976 1977 1977 1980 1978 1980 1977 Part 1: General Part 2: General examination Part 3: Current carrying capacity Part 4: Dynamic stress tests Part 5: Impact tests Part 6: Climatic tests and soldering Part 7: Mechanical operating tests P
43、art 8: Mechanical tests Part 9: Miscellaneous tests IEC 695 Fire hazard testing ISO 1000 1973 SI Units and recommendations for the use of their multiples and of certain other units ISO 1000 SI units and recommendations for the use of their multiples and of certain otherunits. IEC 27 Letter symbols t
44、o be used in electrical technology. IEC 50 (581) International Electromechanical Vocabulary: Electromechanical Components for Electronic Equipment. IEC 117 Recommended graphical symbolsBSCECC96000:1987 BSI 09-1999 3 1) Rocker switch. A sub-class of lever switch in which the actuator takes the form o
45、f a low profile member rocking about an axis parallel to the face of the switch in which it appears. 2) Joystick switch. A sub-class of lever switch in which the lever is able to move freely within a cone whose axis is perpendicular to the mounting face, and which actuates two switch circuits each r
46、elating to movement around one or two mutually perpendicular axes. b) Rotary switch. A switch actuated by a rotary motion which results in the connection or disconnection of the switch terminations in a specified manner. 1) Thumbwheel (edge-mounted) switch. A sub-class of rotary switch in which the
47、axis of rotation is parallel to the face from which the actuator emerges, the actuator consisting of a disc which is rotated by manual contact with its edge. 2) Key Activated switch. A sub-class of rotary switch in which the actuator is a mechanically coded key. The key may be removable at one or mo
48、re operating positions of the switch. c) Sensitive switches (microswitches). A switch having a snap action mechanism which is operated by the movement of an actuator with a defined force through a defined travel. The travel required at the operating point is small. The resulting indirect contacting
49、action may be such that the speed of the contacting is independent of the speed of the actuation. d) Push button switch. A switch in which the longitudinal movement of the actuator perpendicular to the face of the switch from which it emerges results in the connection or disconnection of the switch terminations in a specified manner. 1) Keyboard. A sub-class of push-button switch in which the switches are arranged in a two-dimensional array, and are mechanically independent. The action is normally short and light to facilitate rapid actu
