EN 60068-1-2014 en Environmental testing - Part 1 General and guidance.pdf

1、BSI Standards PublicationEnvironmental testingPart 1: General and guidanceBS EN 60068-1:2014National forewordThis British Standard is the UK implementation of EN 60068-1:2014. It isidentical to IEC 60068-1:2013. It supersedes BS EN 60068-1:1995, which willbe withdrawn on 11 November 2016.The UK part

2、icipation in its preparation was entrusted to TechnicalCommittee GEL/104, Environmental conditions, classification and testing.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of

3、a contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 61040 0ICS 19.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the a

4、uthority of theStandards Policy and Strategy Committee on 31 March 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60068-1:2014EUROPEAN STANDARD EN 60068-1 NORME EUROPENNE EUROPISCHE NORM March 2014 CENELEC European Committee for Electrotechnical Standardiz

5、ation Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60068-1

6、:2014 E ICS 19.040 Supersedes EN 60068-1:1994 English version Environmental testing - Part 1: General and guidance (IEC 60068-1:2013) Essais denvironnement - Partie 1: Gnralits et lignes directrices (CEI 60068-1:2013) Umgebungseinflsse - Teil 1: Allgemeines und Leitfaden (IEC 60068-1:2013) This Euro

7、pean Standard was approved by CENELEC on 2013-11-11. CENELEC members are bound to comply with the CEN/CENELEC 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 reference

8、s concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre 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 CEN

9、ELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugosla

10、v Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60068-1:2014EN 60068-1:2014 - 2 - Forewor

11、d The text of document 104/618/FDIS, future edition 7 of IEC 60068-1, prepared by IEC/TC 104 “Environmental conditions, classification and methods of test“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60068-1:2014. The following dates are fixed: latest date by which t

12、he document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-09-21 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-11-11 This document supersedes EN 60068-1:1994. EN 60068-1

13、:2014 includes the following significant technical changes with respect to EN 60068-1:1994: updated normative reference list; indication of normative and informative annexes; new informative Annex C, Environmental test tailoring. Attention is drawn to the possibility that some of the elements of thi

14、s document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60068-1:2013 was approved by CENELEC as a European Standard without any modification. In the o

15、fficial version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60068-2-14 NOTE Harmonized as EN 60068-2-14. IEC 60068-2-20 NOTE Harmonized as EN 60068-2-20. IEC 60068-2-27 NOTE Harmonized as EN 60068-2-27. IEC 60068-2-38 NOTE Harmonized as EN 60068-2-38. IEC

16、 60068-3-1 NOTE Harmonized as EN 60068-3-1. IEC 60529 NOTE Harmonized as EN 60529. IEC 60721 NOTE Harmonized in EN 60721 series (not modified). BS EN 60068-1:2014- 3 - EN 60068-1:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publicatio

17、ns The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE

18、 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60068-2 series Environmental testing Part 2: Tests EN 60068-2 series BS EN 60068-1:2014 2 60068-1 IEC:2013 CONTENTS INTRODUCTION . 5 1 S

19、cope . 7 2 Normative references . 8 3 Terms and definitions . 8 4 Standard atmospheric conditions 11 4.1 Standard reference atmosphere 11 4.2 Standard atmospheres for referee measurements and tests 12 4.3 Standard atmospheric conditions for measurements and tests . 12 4.4 Recovery conditions 13 4.4.

20、1 General . 13 4.4.2 Controlled recovery conditions . 13 4.4.3 Recovery procedure 14 4.5 Standard conditions for assisted drying . 14 5 Use of test methods 14 6 Climatic sequence 14 7 Component climatic category 15 8 Application of tests . 15 9 Significance of the numerical value of a quantity 15 9.

21、1 General . 15 9.2 Quantity expressed as nominal value with tolerance 15 9.3 Quantity expressed as a range of values . 16 Annex A (normative) Component climatic category 18 Annex B (informative) General guidance 19 Annex C (informative) Environmental test tailoring . 25 Bibliography 31 Figure C.1 En

22、vironmental test tailoring process . 26 Table 1 Standard atmospheres for referee measurements and tests 12 Table 2 Standard atmospheres for measurements and tests 13 Table 3 Standard conditions for assisted drying . 14 Table B.1 Choice of tests as a function of objectives and applications . 21 Table

23、 B.2 General sequence of tests . 23 Table B.3 Principal effects of single environmental parameters 24 Table C.1 Test tailoring process with information flow and the corresponding activities . 27 BS EN 60068-1:201460068-1 IEC:2013 5 INTRODUCTION The IEC 60068 series contains fundamental information o

24、n environmental testing procedures and severities of tests. In addition, this Part 1 contains information on atmospheric conditions for measurement and testing. It is intended to be used in those cases where a relevant specification for a certain type of product (electrical, electromechanical or ele

25、ctronic equipment and devices, their subassemblies and constituent parts and components), hereinafter referred to as the “specimen”, is to be prepared, so as to achieve uniformity and reproducibility in the environmental testing of this product. NOTE 1 Although primarily intended for electrotechnica

26、l products, many of the environmental testing procedures in Part 2 of this series are equally applicable to other industrial products. The expression “environmental conditioning” or “environmental testing” covers the natural and artificial environments to which specimens may be subjected and exposed

27、 to in practice so that an assessment can be made of their performance under conditions of storage, transportation, installation and use. The requirements for the performance of specimens subjected to environmental conditioning are not covered by this standard. The relevant specification for the spe

28、cimen under test defines the allowed performance limits during and after environmental testing. When drafting a relevant specification or purchasing contract, only those tests should be specified that are necessary for the relevant specimen, taking into account the technical and economic aspects. Th

29、e IEC 60068 series consists of: a) this first part, IEC 60068-1 General and guidance, which deals with generalities; b) the second part, IEC 60068-2 Tests which publishes particular tests separately for different applications; c) the third part, IEC 60068-3 Supporting documentation and guidance, whi

30、ch deals with background information on a family of tests. The families of tests comprising Part 2 of the IEC 60068 series are designated by the following upper-case letters: A: Cold B: Dry heat C: Damp heat (steady-state) D: Damp heat (cyclic) E: Impact (for example shock and rough handling shocks)

31、 F: Vibration G: Acceleration (steady state) H: (Awaiting allocation) NOTE 2 Originally allotted to storage tests. J: Mould growth K: Corrosive atmospheres (for example salt mist) L: Dust and sand M: Air pressure (high or low) N: Change of temperature BS EN 60068-1:2014 6 60068-1 IEC:2013 P: (Awaiti

32、ng allocation) NOTE 3 Originally allotted to “flammability”. Q: Sealing (including panel sealing, container sealing and protection against ingress and leakage of fluid) R: Water (for example rain, dripping water) S: Radiation (for example solar, but excluding electromagnetic) T: Soldering (including

33、 resistance to heat from soldering) U: Robustness of terminations (of components) V: (Awaiting allocation) NOTE 4 Originally allocated to “acoustic noise” but “vibration, acoustically induced” will now be Test Fg, one of the “vibration” family of tests. W: (Awaiting allocation) Y: (Awaiting allocati

34、on) The letter X is used as a prefix together with a second lower-case letter providing for extension of the list of families of tests, e.g. Test Xa: Immersion in cleaning solvents. The letter Z is used to denote combined tests and composite tests as follows: Z is followed by a solidus (slash) and a

35、 group of lower-case letters relating to the combined or composite stresses, for example Test Z/am: Combined cold and low air pressure tests. If appropriate, a test may be designated as “primarily intended for components” or “primarily intended for equipment”. To provide for future expansion within

36、a family of tests and to maintain consistency of presentation, each family of tests may be subdivided. The subdivisions are identified by the addition of a (lower-case) second letter, for example: U: Robustness of terminations and integral mounting devices Test Ua: Subdivided as Test Ua1: Tensile; a

37、nd Test Ua2: Thrust Test Ub: Bending Test Uc: Torsion Test Ud: Torque This subdivision is made even though only one test is published and no further tests are immediately contemplated in the relevant family. In order to avoid confusion with numbers, the letters i, I, o and O are not used. BS EN 6006

38、8-1:201460068-1 IEC:2013 7 ENVIRONMENTAL TESTING Part 1: General and guidance 1 Scope The IEC 60068 series includes a series of methods for environmental testing along with their appropriate severities, and prescribes various atmospheric conditions for measurements and tests designed to assess the a

39、bility of specimens to perform under expected conditions of transportation, storage and all aspects of operational use. Although primarily intended for electrotechnical products, this standard is not restricted to them and may be used in other fields where desired. Other methods of environmental tes

40、ting, specific to the individual types of specimen, may be included in the relevant specifications. The framework of environmental test tailoring process is given in order to assist the production of test specifications with appropriate tests and test severities. The IEC 60068 series provides a seri

41、es of uniform and reproducible environmental, climatic, dynamic and combined tests, performed and measured under standard atmospheric conditions, for those preparing specifications and those engaged in the testing of products. These test methods are based upon available international engineering exp

42、erience and judgement and are primarily designed to provide information on the following properties of specimens: a) the ability to operate within specified limits of temperature, pressure, humidity, mechanical stress or other environmental conditions and combinations of these conditions; b) the abi

43、lity to withstand conditions of transportation, storage and installation. NOTE 1 The IEC 60721 series provides a system for classification of environmental conditions and gives relevant definitions. The tests in this standard permit the comparison of the performance of sample products. To assess the

44、 quality or useful life of a given production lot, the test methods should be applied in accordance with a suitable sampling plan and may be supplemented by appropriate additional tests, if necessary. NOTE 2 ISO defines “quality” as the degree to which a set of inherent characteristics fulfils requi

45、rements NOTE 3 “Useful life“: under given conditions, the time interval beginning, at a given instant of time, and ending when the failure intensity becomes unacceptable or when the item is considered unrepairable as a result of a fault. To provide tests appropriate to the different intensities of a

46、n environmental condition, some of the test procedures have a number of degrees of severity. These different degrees of severity are obtained by varying the time, temperature, air pressure or some other determining factor, separately or in combination. As the tests and their degrees of severity shou

47、ld be based on real environmental conditions that a particular specimen might encounter, the framework and the necessary phases for the environmental test tailoring process are provided. The test tailoring process may be used to produce the required relevant test specification for the particular spe

48、cimen. BS EN 60068-1:2014 8 60068-1 IEC:2013 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of

49、 the referenced document (including any amendments) applies. IEC 60068-2 (all parts), Environmental testing Tests 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. NOTE Tests covered by this standard may, in themselves, consist of a series of operations in order to determine the effect of such a test, or series of tests, on a specimen. 3.1 test complete series of operations implied by its title, normally comprising the following operations, if required