1、BRITISH STANDARD Environmentall testing - BS EN 60068-5-2:2000 JEC 60068-5-2: 1990 Part 5: Guide to drafting of test methods - Terms and definitions The European Standard EN 6Mj-21999 has the status of a British Standard ICs 01.040.19: 19.040 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMTED BY CO
2、PYRIGHT LAW This British Standard, having been prepared under the direction of the Electrotchnicai Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 March 2000 Amd. No. Date This British standard is the offical English language version of EN 6
3、006852:19!39. It is identical with IEC 6006852:1990. It supersedes BS 2011:Section 5.21992 which iswithdrawn. The UK participation in its preparation was entrusted to Technical Committee GEUl4, Environmental conditions, classication and testing, which has the responsibility to: - aid enquirem to und
4、erstand the text; - present to the responsible international European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed them in the UK. - iiiu 19.040 Supersedes HO 323.5.2 S1:1991 English version Environmental testing Part 5: Guide to drafting
5、 of test methods Terms and definitions (IEC 60068-5-2: 1990) Essais denvironnement Partie 5: Guide pour la rdaction des mthodes dessais Termes et dfinitions (CE1 60068-5-2: 1990) Urnweltprfungen Teil 5: Leitfaden fr das Festlegen von Prfverfahren - Begriffe (IEC 60068-5-2: 1990) This European Standa
6、rd was approved by CENELEC on 1999-10-01. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning
7、 such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its o
8、wn language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland. France, Germany, Greece, Iceland, Ireland. Italy, Luxembourg, Netherlands, Norway, Por
9、tugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 1999 CENELEC - All rights
10、of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60068-5-2:1999 E STD.BS1 BS EN b0068-5-2-ENGt 2000 m lb24bb 0829354 3T7 Page 2 EN 60068-5-2: 1 999 Foreword The text of the International Standard IEC 60068-5-2:1990, prepared by IEC TC 50 (transformed i
11、nto IEC TC 104 “Environmental conditions, classification and methods of test“), was approved by CENELEC as HD 323.5.2 S1 on 1991-06-25. This Harmonization Document was submitted to the formal vote for conversion into a European Standard and was approved by CENELEC as EN 60068-5-2 on 1999-10-01. The
12、following date was fixed: - latest date by which the EN has to be implemented at natiionai level by publication of an identic4 national standard or by endorsement (dop) 2000- 1 0-0 1 Annexes designated “normative“ are part of the body of the standard. In this standard, annex ZA is normative. Annex Z
13、A has been added by CENELEC. Endorsement notice The text of the International Standard IEC 60068-5-2:1990 was approved by CENELEC as a European Standard without any modification. Page 3 EN 60068-5-2:1999 CONTENTS INTRODUCTION “ . Clause Object . Normative references . Terminology for environmental t
14、esting . General . Shocks, vibration and steady-state acceleration Climatic tests . . Sealing tests . ._. Solderability tests - Alphabetical index . Annex ZA (normative) Normative references to international publications with corresponding European publications Page 4 5 5 6 6 7 9 11 12 13 their 15 O
15、 BSI 03-2000 STD.BS1 BS EN bOOb8-5-2-ENGL 2000 = lb2Llbb9 0829356 17“ = Page 4 EN 60068-5-2:1939 INTRODUCTION IEC 60068 is applicable to the environmental testing of electrotechnical products. Its general requirements are contained in: Part 1: General and guidance These requirements and guidance are
16、 applicable in general to the test methods in the many booklets comprising: Part 2: Tests A considerable proportion of the booklets include guidance on the conduct and/or cippiuiitby L1lG iiiuiviuuai 9 IIIGLIIUUP. VVIG yu;d:i?cs is applicable to more than one test method it may be separately publish
17、ed in Part 2 or be treated as “background information“ and published in: -I:-L:I:L -c AL, :-I:-I-I A-A -LL-A- I IL- -. Part 3: Background information An entirely different function is performed by: Part 4: Information for specification writers - Test summaries which, as its title implies, has a rest
18、ricted specific objective as has Part 5: Guide to drafting of test methods: Part 5 is intended primarily for those members of National Committees, working groups, etc., who are engaged in drafting initial proposals, revisions and amendments and wish for assistance in satisfying the “IECIISO Rules fo
19、r the drafting and presentation of International Standards“ (Directives Part 3, 2nd edition 1989) and maintaining uniformity in the presentation of the individual standards. Each standard, excluding IEC 60068-3 and IEC 60068-4, will contain preliminary elements (see 2.2 of IEC/ISO Rules); normative
20、elements, both “general“ (see 2.3 of IEC/ISO Rules) and technical“ (see 2.4 of IEC/ISO Rules); and supplementary elements (see 2.5 of IEC/ISO Rules). (9 BSI 03-2000 STD.BSI BS EN bOOb8-5-2-ENGL 2000 W Lb24bb 0829357 006 Page 5 EN 60068-5-21999 ENVIRONMENTAL TESTING - Part 5: Guide to drafting of tes
21、t methods - Terms and definitions 1 Object 1.1 products, such as components, subassemblies, assemblies and equipments. To define terms used in the environmental testing of specimens of electrotechnical 1.2 The environmental conditions for which provision is made include shock and vibration, climatic
22、 (temperature, humidity and air pressure), sealing (against ingress of solids, liquids and gasses or to maintain a pressure difference), soldering heat (including thermal shock from soldering). 1.3 Terms for fire hazard testing are not included as they are to form a part of IEC 60695. The following
23、conditions have not been considered: solar radiation, mould growth, corrosion, robustness of terminations, durability of marking, dust, sand and rain, nuclear radiation, acoustically induced vibration. NOTES 1 The scope of IEC 60068 is in clause 2 of IEC 60068-1. In other standards of IEC 60068, cla
24、use 1 is termed the “object“ clause and serves the purpose of object and field of application. 2 This guide uses, in principle, existing terms and definitions from IEC 60068 listed according to a classification of environmental conditions that is not that of IEC 60721 but is better suited to the nee
25、ds of IEC 60068-2 test methods. 3 Some definitions from specialized vocabularies, for example from IS0 2041 and IEC 60721-1, have been included where there is no definition in IEC 60068. This standard identifies the relation between the definitions given and those other sources. 2 Normative referenc
26、es The following standards and other publications contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on th
27、is International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards and other publications listed below. Members of IEC and IS0 maintain registers of current valid International Standards. IEC 60068: Environmental testing IEC 60068-1: 1988, E
28、nvironmental testing - Part 7: General and guidance IEC 60068-2: Environmental testing - Part 2: Tests IEC 60068-3-1 : 1974, Environmental testing - Part 3: Background information - Section One: Cold and dry heat tests IEC 60068-3-1A: 1978, ,Environmental testing - Part 3: Background information - S
29、ection One: Cold and dry heat tests - First supplement I EC 6072 1 : Classification of environmental conditions IEC 60721 1: 1981, Classification of environmental conditions - Part 7: Classification of environmental parameters and their severities ISO/IEC Guide 2: 1986, General terms and their defin
30、itions concerning standardisation and rela ted activities IS0 2041 : 1975, Vibration and shock - Vocabulary O BSI 03-2000 Page 6 EN 60068-5-2:1999 3 Terminology for environmental testing The terms and definitions are allocated according to subject in the following clauses: Clause Subject Identifying
31、 letters (s) from 1.3 of IEC 60068-1 4 General - 5 Shock, vibration and steady-state 6 Climatic testing A, B, C, D, M, N 7 Sealing testing Q o SIUeiaU;y kSi,g I acceleration E, F, G n -8- 4 General NOTE - The term “conditioning“ commonly used in IEC 60068-2 will be replaced by “testing “ which is us
32、ed in ISOllEC Guide 2. For the purposes of this standard, the term “testinglconditioning“ is adopted with the appropriate word being taken for a particular test method. 4.1 test: Complete series of operations implied by its title, normally comprising the following operations, if required: a) precond
33、itioning; b) initial examination and measurements; c) testingkonditioning; d) recovery; e) final examination and measurements. NOTE - Intermediate measurements may be required during testinglconditioning andlor recovery. 4.2 testinglconditioning: Exposure of a specimen to environmental conditions in
34、 order to determine the effect of such conditions on the specimen. 4.3 environmental conditions (definition equivalent to that of 3.1 of IEC 60721-1 ): Physical and chemical conditions external to the specimen to which it is subjected at a certain time and comprising a combination of single environm
35、ental parameters and their severities. NOTE - The environmental conditions are generally composed of environmental conditions appearing in nature and environmental conditions generated by the specimen itself or by external sources. 4.4 environmental parameters (definition identical with that of 3.2
36、of IEC 60721-1 ): One or more physical or chemical properties (for example: temperature, humidity, acceleration). Example: The environmental parameter “Vibration“ is characterized by the type of vibration (sinusoidal, random), acceleration, frequency. 4.5 specimen: Product designated to be tested in
37、 accordance with the procedures of IEC 60068. NOTE - The term “specimen“ includes any auxiliary parts or systems that are integral functional features of the specimen, for example systems for cooling and heating, mechanical isolators. Q BCI 03-2000 STD-BSI BS EN bOOb8-5-2-ENGL 2000 = 1b2ribb7 082915
38、9 989 m Page 7 4.6 preconditioning: Treatment of a specimen, before testinglconditioning, with the object of removing or partly counteracting the effects of its previous history. EN 60068-5-2:1999 4.7 recovery: Treatment of a specimen, after testinglconditioning, in order that the properties of the
39、specimen may be stabilized before measurement. 4.8 relevant specification: Set of requirements to be satisfied by a product, indicating the method(s) necessary to determine whether the requirements given are satisfied. 4.9 severity: Set of parameters for the testing/conditioning of the specimen. 4.1
40、0 combined test: Test in which two or more test environments act upon the specimen simultaneously. 4.11 composite test: Test in which the specimen is exposed to two or more test environments in close succession. NOTES 1 they may have a significant effect on the specimen. 2 3 exposure. The intervals
41、of time between the exposures to different test environments are defined precisely because Preconditioning, recovery or stabilization periods are usually not included between exposures. Measurements are usually taken prior to the start of the first exposure and at the conclusion of the last 4.12 seq
42、uence of tests: Sequence in which the test specimen is exposed successively to two or more test environments. NOTES 1 have no significant effect on the test specimen. 2 3 the initial measurement of the next. The durations of intervals between the exposures to different test environments are such tha
43、t they normally Preconditioning and recovery periods are usually provided between each exposure. Measurements are usually taken before and after each exposure, the final measurement of one test being 4.13 reference atmosphere: Atmosphere to which values measured under any other conditions are correc
44、ted by calculation. 4.14 referee measurements: Measurements repeated under closely controlled atmospheric conditions when the correction factors to adjust atmospheric-condition sensitive parameters to their standard reference atmosphere values are unknown, and measurements under the recommended rang
45、e of ambient atmospheric conditions are unsatisfactory. 5 Shocks, vibration and steady-state acceleration 5.1 geographical latitude. g,: Standard acceleration due to the earths gravity, which itself varies with altitude and NOTE - For the purposes of IEC 60068, the value of gn is rounded off to the
46、nearest whole number, that is 10 mIs2. 5.2 critical frequencies: Frequencies at which: - malfunctioning and/or deterioration of performance of the specimen due to vibration appear; andlor - mechanical resonances andlor other response effects occur, for example chatter. Q BSI 03-2000 Page 8 EN 6006 5
47、.6 fixing point: Part of the specimen in contact with the mounting fixture, vibration or shock table at the point where the specimen is normally fastened in service. NOTE - If a part of the real mounting structure is used as the fixture, the fixing points are taken as those of the mounting structure
48、 and not of the specimen. 5.7 measuring points: Specific points at which data is gathered for the conduct of the test. These points are of two main types as defined below. NOTE - Measurements may be made at points within the specimen in order to assess its behaviour; these are not considered as meas
49、uring points. 5.7.1 checkpoint: Point located on the fixture, on the vibration or shock table or on the specimen as close as possible to one of its fixing points and in any case rigidly connected to it. 5.7.2 reference point: Point chosen from the checkpoints, whose signal is used to control the test so that the requirements of the standard are satisfied. 5.8 preferred testing axes: Three orthogonal axes which correspond to the most vulnerable axes of the specimen. 5.9 sine beat: Continuous sinusoidal wave of one frequency that is modulated b
