1、 STD-BSI BS EN L9b403-ENGL 2000 m Sb24bb9 0838762 97T m BRITISH STANDARD Harmonized systems of quality assessment for electronic components - Blank detail specification: Push button switches Assessment level Y The European Standard EN 1964031998 has the status of a British Standard ICs 31.220.20 NO
2、COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN L96403:2000 , STD.BS1 BS EN 196403-ENGL 2000 Lb24669 0838763 806 BS EN 196403:2000 been prepared under the direction of the Electrotechucal Sector Committee, was published under the authonty of the Standards Committee and come
3、s into effect on 15 Apnl2000 hd. No. O BSI 04-2000 ISBN O 580 34688 9 National foreword Date Comments This British Standard is the official English language version of EN 1964031998 published by the European Electronic Components Committee (CECC) of the European Committee for Electrotechnical Standa
4、rduation (CENELEC). The UK participation in its preparation was entrusted to Technical Committee EPy23, Switches for electronic equipment, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related i
5、nternational and European developments and promulgate interpretation, or proposals for change, and keep the UK interests donned; them in the UK A list of organizations represented on this committee can be obtained on request to its secretaxy. Cross-references The British Standards which implement in
6、ternational or European publications referred to in this document may be found in the BSI Siandards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to i
7、nclude all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance 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, th
8、e EN title page, pages 2 to 39 and a back cover. The BSI copyright notice together with the voting report, circulated as document CECC(Secretariat)3361, it was approved as EN 196403 on 1993-06-14. The following dates were fixed: - latest date by which the EN has to be implemented at national level b
9、y publication of an identical national standard or by endorsement (dop) 1998-10-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (daw) 2004-04-01 NOTE: This speufication is published in English and German only. The French text will follow as soon as it ha
10、s been prepared. STD-BSI BS EN 19b403-ENGL 2000 lb2Yhh9 08387bb 515 9 Page 3 EN 196403: 1998 The preparation of Detail Specifications General instructions Detail specifications for push-button switches shall be prepared by completing the following pro-forma as indicated by the guide lines given belo
11、w and in accordance with EN 196000:1992. The layout given shall be adhered to as closely as is practicable. Each detail specification shall relate to only one type of push-button switch as defined in 2.2.3a) of EN 196000: 1992 and to one assessment level, but may if found convenient cover more than
12、one style of that type and/or number of vanants within each style. For push-button switches, “style“ and “variant“ have meanings as defined below. The styk of a push-button switch of a given type is determined by the following parameters: - current and voltage ratings - climatic category Switches fo
13、r which it is wished to claim structural similanty shall be of the same type and style, in accordance with 3.2 of EN 196000:1992. The variants within parameters: a style of push-button switch are determined, for example, by the following - method of mounting, mounting hole; - form (of actuator and o
14、f case); - number of contacts, contact arrangement; - latching or momentary switch, mechanical system; - sealing; - operating force; - terminations; - illumination (with or without); - colour (if applicable); - number of cells and their interiocking arrangements. STD=BSI BS EN L7b403-ENGL 2000 Lb24b
15、b9 08387b7 451 Page 4 EN 196403:1998 The detail specification shall contain all the necessary information to identify the particular type, siyie(s) and variant(s) of push-button switches which it covers. This information shall include at least the following: a) Ratings and characteristics 1) Ratings
16、 and characteristics shall be taken from the preferred list given in 2.3 of EN 196000: 1992 unless more severe values are to be prescribed. 2) Proof voltage shall be determined as stated in 4.3.4.1 b) 3) or 4) of EN 196000:1992. b) Detailed dimensions including mounting. c) Number of contacts. d) La
17、tching or momentary switch. e) Operating force. 9 Terminations. g) Sealed or non-sealed. h) Illumination. i) Colour. j) Assessment level. - STD=BSI BS EN lSbY03-ENGL 2000 W Lb24bh 08383b 398 I Page 5 EN 196403:1998 Terminology The terminology used shall be in accordance with 2.2 of EN 196000:1992. T
18、he following additional definitions relate specifically to push-button switches. Any further special terms which are found necessary shall be defined in the detail specification. 1 push-button switch with momentary mechanical system, single pressure non-iatching mechanical system (momentary push-but
19、ton switch) A push-button switch with a mechanical system such that a button attains a position when a force is applied and returns to its original position on the removal of the applied force. In this type the contacts follow the position of the button. 2 push-button switch with single pressure mai
20、ntained mechanical system (latching push-button switch) A push-button switch with a mechanical system such that a button attains a position when a force is applied and returns to its original position on the removal of the applied force, leaving the internat mechanism and contacts in the operated co
21、ndition. Repeating the applied force on the button releases the mechanical system and contacts to their original position. 3 push-button (latching, momentary) with a locking system actuated by a key (locked push- button switch) A push-button switch with a locking system actuated by a key, such that
22、the button can actuate the contacts only when the system is unlocked. - STD-BSI BS EN 19b403-ENGL 2000 E 1624669 08387b9 224 E Page 6 EN 196403:1998 Detailed instructions for completion of a detail specification A completed detail specification shall be prepared in accordance with the following inst
23、ructions. a) Front page The front page is intended to formally identify the specification and to provide sufficient technical information for the user to identrfy the general features of the switch and its principal characteristics. Its layout shall be as shown on page 8. The numbers between I. brac
24、kets on page 8 refer to details which shall be inserted in accordance with items I to (91 below: i The name of the National Standards Organization under whose authority of the detail specification is published, followed by the manufactwets name and address if appropriate. 2 The CECC symbol and the n
25、umber allocated by the CECC General Secretariat 3 The number and issue of the CECC generic and sectional specification; also national reference if different. 4 If different from the CECC number, the national number, date of issue and any further information required by the national system, together
26、with any amendment numbers. 5 A statement of the class and sub-class (where applicable) of switch, as listed in 1.2 of EN 196000: 1992. 6 Information on principal features of construction, such as the provision of illumination, sealing, special mounting or termination facilities. It shall be stated
27、if the switch is suitable for printed wiring applications. For 5 and 6, the text shall be suitable for an entry in CECC O0 200 (QPL) and CECC O0 300 (Library List). 7 An outline drawing and main dimensions which are of importance for interchangeability, andior reference to the appropriate national o
28、r intemational document for outlines. Alternatively, this drawing may be given in an appendix. Dimensions shall be given in millimetres. A general sketch must appear on the first page. 8 Level of quality assessment, in accordance with c) 1) below and with 3.4 of EN 196000: 1992. 191 The principal ra
29、tings and characteristics of the switch. Those parameters which are not subject to lot-by-lot or periodic inspection shall be clearly identified as such. b) Technical information This section shall provide full technical details and performance characteristics of the switch, together with any other
30、information required by the user. It shall be prepared by completing pages 8 to 12 in accordance with the instructions given on those pages. - STD.BS1 BS EN 19b403-ENGL 2000 1b24bb 0838770 T4b Page 7 EN 196403:1998 c) Test schedule 1) This section shall fully dent the schedule of tests to which the
31、component is subjected for quality conformance inspecbon and for qualification approval. An assessment level lY for military purposes and for similar requirements has been provided for these rotary switches. It is not permitted to delete inspection and test requirements from those laid down by the t
32、ables for quality conformance inspection and/or for qualons approval, unless these are indicated as Itif applicable“. More severe requirements than those of level Y may be introduced if necessary. When such an enhanced level is created, this shall be indicated in box 8 of page 8 by inserting Y+“. 2)
33、 The pro-forma test schedules for quali conformance inspection are given in tables 1A and 1 B. The table shall be completed with conditions of test and performance requirements as specified in 4.3 of EN 196000:1992 for each test, and in accordance with the instructions given in the table. 3) When th
34、e xed sample size procedure is adopted for obtaining qualification approval in accordance with 3.3.3 of EN 196000:1992, table 2 shall be completed and used as appropriate. The conditions of test and the performance requirements shall be identical to those prescribed for quality conformance inspectio
35、n in the completed tables A and 1 B. 4) When it is intended to reduce the number of contact sets tested, as permitted by 4.2 of EN 196000: 1992, the following shall be stated in the test schedule for each relevant sub-group: - number of samples to have all their contact sets tested (minimum permitte
36、d = 25 % of the samples); -total number of contact sets to be tested (minimum permitted = 2 x specified number of samples). 5) When it is intended to apply tests additional to those specified by the following tables, the test methods shall be clearly detailed, either by reference to the relevant tes
37、t number in 4.3 of EN 196000:1992 or, where the test is not defined by EN 196000:1992, by stating in full the test method to be applied. Page 8 EN 196403: 1 998 Recommended layout for detail specifications for push-button switches of assessed qualrty, assessment level Y. ELECTRONIC COMPONENTS OF ASS
38、ESSED QUALITY: Detail specification in accordance with EN 196000: 1992 CECC 96 400: 1988 EN 196403:1998 (31 Outline and dimensions (mm) (First angle projection) 71 For dimensions and mass (weight) See annex A NOTE: Other shapes are permitted within the dimensions given PR I NCI PAL RAT1 NGS AND CHAR
39、ACTERISTICS 191 CECC 96 40 S. i21 Issue 1 month, year Page . .f. 41 PUSH-BUTTON SWITCH 151 Principal constructional features SI Level Y Pl - See the current CECC O0 200 for availability of components qualified under this detail specification. 1 STD.BSI ES EN Lb403-ENGL 2000 W Lb24bb 0838772 819 0 Pa
40、ge 9 EN 196403:1998 i Basic information 1.1 General (A statement of the principal usage features of the device; for example “panel mounting, high current“.) 1.2 Range and variants The switches cover the following range of variants: Electrical contacts Contact material Method of switch operation Shor
41、ting or non-shorting Latching or momentary switch Key operated Illumination - shielded or unshieided - all non-switching conductive parts shall be connected to a common termination (if applicable). 2 Ratings and characteristics (values according to 2.3 of EN 196000:1992) 2.1 Electrical ratings 2.1.1
42、 Maximum switched voltage 2.1.2 Minimum switched voltage 2.1.3 Rated voltage 2.1.4 Minimum switched current . . . V a.c. or d.c. (resistive load) . V a.c. (inductive load, max. . mH) . V a.c. . V a.c. andlor d.c. at . rnA a.c. andlor d.c. e mA 2.1.5 Maximum switched current . mA 2.1.6 Maximum switch
43、ed power 2.1.7 Maximum carrying current . Wd.c. or . VA a.c. , A a.c. andlor d.c. STD.BS1 BS EN Lb403-ENGL 2000 II Lb24bb 0838773 755 Page 10 EN 196403: 1998 2.2 Environmental characteristics 2.2.1 Climatic category (40/85/56 or 5511 25/56) 2.2.2 Shock severity or 2.2.3 Bump severity 2.2.4 Vibration
44、 2.2.5 Low air pressure 2.2.6 Sealing 2.2.7 Fla m mability 2.2.8 Mould growth 2.2.9 Corrosion 2.2.10 Sand and dust /I/ . m/s2 ; . . . ms; haif-sine pulse; . shocks in each of the three main axes in positive and negative direction . ds2; . bumps: duration of each bump 6 ms 10 Hz to . Hz; displacement
45、 0,75 mm; acceleration 98 m/s2 (1 O 9); duration . h . kPa (. rnbar) . kPa (. mbar) (Conditions to be stated according to section 4.3.14 of EN 196000:1992) Conditions according to IEC 512-9, Test 20a, flammability, needle-flame test Conditions according to IEC 68-2-10, Test J Conditions to be stated
46、 according to IEC 68-2-42, Test Kc and IEC 68-2-43, Test Kd Conditions according to IEC 1020-1, section 4.1 2.6 Page 11 EN 196403: 1998 2.3 Mechanical characteristics 2.3.1 Operating force 2.3.2 Latching and de-latching force (if applicable) 2.3.3 Total travel 2.3.4 Mechanical endurance 2.3.5 Consta
47、nt load force on actuator . Nm min.; . Nm max. . Nm min.; .,. N max. latching . Nm min.; . N max. de-latching . mm min.; . mm max. . cycles of operation without load . N max. 2.4 Electrical characteristics 2.4.1 Electrical endurance at - room temperature min . cycles with resistive load - upper cate
48、gory temperature min . cycles with resistive load - lower category temperature min . cycles with resistive load (according to 2.1.6 of this specification, maximum switched power applied) . m Ohm 2.4.2 Maximum initial contact resistance 2.4.3 Maximum final contact resistance (after endurance test) .
49、m Ohm 2.4.4 Minimum initial insulation resistance between all contacts and between contacts and mountinglcase (if applicable) . M Ohm, measured at (500 f 50) V d.c. 2.4.5 Minimum final insulation resistance between all contacts and between contacts and mountingkase (if applicable) (ater climatic sequence) . M Ohm, measured at (500 i 50) V d.c. 2.4.6 Voltage proof - between all contacts - between contacts and mountingcase (if applicable) . . v rms . v mis STD.BS1 BS EN Lb403-ENGL 2000 Lb24bb 0838775 528 Page 12 EN 19640
