1、Fire hazard testing Part 1-30: Guidance for assessing the fire hazard ofelectrotechnical products Preselection testingprocess General guidelinesBS EN 60695-1-30:2008raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsNational foreword
2、This British Standard is the UK implementation of EN 60695-1-30:2008. Itis identical to IEC 60695-1-30:2008. It supersedes BS EN 60695-1-30:2002which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/89, Fire hazard testing.A list of organizations represent
3、ed on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application. BSI 2008ISBN 978 0 580 55533 6ICS 13.220.40; 29.020BRITISH STANDARDBS EN 60695-1-30:2008Complianc
4、e with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 March 2009 Amendments issued since publicationAmd. No. Date Text affectedEUROPEAN STANDARD EN 60695-1-30 NORME EUROPENNE
5、EUROPISCHE NORM October 2008 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 2008 CENELEC - All rights of exploitation in any fo
6、rm and by any means reserved worldwide for CENELEC members. Ref. No. EN 60695-1-30:2008 E ICS 13.220.40; 29.020 Supersedes EN 60695-1-30:2002English version Fire hazard testing - Part 1-30: Guidance for assessing the fire hazard of electrotechnical products - Preselection testing process - General g
7、uidelines (IEC 60695-1-30:2008) Essais relatifs aux risques du feu - Partie 1-30: Lignes directrices pour lvaluation des risques du feu des produits lectrotechniques - Processus dessais de prslection - Lignes directrices gnrales (CEI 60695-1-30:2008) Prfungen zur Beurteilung der Brandgefahr - Teil 1
8、-30: Anleitung zur Beurteilung der Brandgefahr von elektrotechnischen Erzeugnissen - Anwendung von Vorauswahlverfahren - Allgemeiner Leitfaden (IEC 60695-1-30:2008) This European Standard was approved by CENELEC on 2008-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulat
9、ions 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 such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This
10、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 own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members
11、are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
12、Spain, Sweden, Switzerland and the United Kingdom. BS EN 60695-1-30:2008EN 60695-1-30:2008 - 2 - Foreword The text of document 89/865/FDIS, future edition 2 of IEC 60695-1-30, prepared by IEC TC 89, Fire hazard testing, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN
13、 60695-1-30 on 2008-10-01. This European Standard supersedes EN 60695-1-30:2002. The main changes with respect to EN 60695-1-30:2002 are listed below: further explanation given in the introduction and scope; Clause 3: changes to the definitions; Clause 4: clarifications of the principles of product
14、design considering preselection; Clause 5: clarifications of the advantages and limitations of preselection; Clause 6: clarifications of the aspects of preselection relative to hazard assessment; Annex A: changes in the references for examples of test methods which may be relevant to preselection; A
15、nnex B: changes in the illustrative example of the flowchart of the use of preselection tests for resistance to fire hazards of a specific product type. This standard is to be used in conjunction with the future IEC 60695-1-101)and IEC 60695-1-111). The following dates were fixed: latest date by whi
16、ch the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-10-01 Annex ZA has been added by CENELEC. _ Endorsement notice The
17、 text of the International Standard IEC 60695-1-30:2008 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 60950-1 NOTE Harmonized as EN 60950-1:2006 (modified). _ 1)Un
18、der consideration. BS EN 60695-1-30:2008- 3 - EN 60695-1-30:2008 Annex ZA(normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only
19、 the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IE
20、C 60695-4 2005 Fire hazard testing - Part 4: Terminology concerning fire tests for electrotechnical products EN 60695-4 2006 IEC Guide 104 1997 The preparation of safety publications and the use of basic safety publications and group safety publications - - ISO/IEC Guide 51 1999 Safety aspects - Gui
21、delines for their inclusion in standards - - ISO 13943 2000 Fire safety - Vocabulary EN ISO 13943 2000 BS EN 60695-1-30:2008 2 60695-1-30 IEC:2008 CONTENTS INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 Principles of product design considering preselection.7 5 Advant
22、ages and limitations of preselection .8 6 Aspects of preselection relative to hazard assessment .8 Annex A (informative) Examples of test methods .9 Annex B (informative) Use of preselection tests for flammability requirements for fire enclosure materials used in information technology equipment (IT
23、E) Illustrative example11 Bibliography13 Figure B.1 Flammability requirements for fire enclosure materials used in information technology equipment.12 Table 1 Some of the factors which can affect fire performance in preselection tests 7 BS EN 60695-1-30:200860695-1-30 IEC:2008 5 INTRODUCTION In the
24、design of any electrotechnical product, the risk of fire and the potential hazards associated with fire need to be considered. In this respect the objective of component, circuit and equipment design as well as the choice of materials is to reduce to acceptable levels the potential risks of fire eve
25、n in the event of foreseeable abnormal use, malfunction or failure. The future IEC 60695-1-102and IEC 60695-1-112provide guidance on how this is to be accomplished using quantitative and qualitative fire tests. The information gained from properly designed small-scale tests can be used as an aid for
26、 the preselection of proper materials, parts, components or sub-assemblies with regard to the fire hazard evaluation of the final end-product. The best method for testing electrotechnical products with regard to fire hazard is to duplicate exactly the conditions occurring in practice by conducting r
27、eal-scale fire tests. Where this is not practicable, fire hazard testing should be conducted by simulating as closely as possible, the actual conditions of use and of the situation to which a sub-assembly, component, part or material may be exposed in such use. As an outcome of conducting a fire haz
28、ard assessment, an appropriate series of preselection flammability and ignition tests may enable reduced end-product testing. Preselection is the procedure for assessing and choosing materials, components or sub-assemblies for parts of end-products. Preselection has been used for many years to assis
29、t the designer in the selection of candidate materials in the design stage of the end-product. _ 2Under consideration. BS EN 60695-1-30:2008 6 60695-1-30 IEC:2008 FIRE HAZARD TESTING Part 1-30: Guidance for assessing the fire hazard of electrotechnical products Preselection testing process General g
30、uidelines 1 Scope This part of IEC 60695 provides guidance for assessing and choosing candidate materials, components or sub-assemblies for making an end-product based upon preselection testing. It describes how preselection provides comparative fire hazard test methods to evaluate the performance o
31、f a test specimen and how preselection can be used in the selection of materials, parts, components and sub-assemblies during the design stage of an end-product. It further describes how standardized test methods may be used as one part in the decision making processes directed to minimize the fire
32、hazards from electrotechnical equipment. It states that one should take into account the desired reaction to fire properties of the end-product, and that one should consider the possible effects of environmental conditions on the behaviour of the end-product. This basic safety publication is intende
33、d for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its public
34、ations. The requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the relevant publications. 2 Normative references The following referenced documents are indispensable for the application of this document. For da
35、ted references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60695-4:2005, Fire hazard testing Part 4: Terminology concerning fire tests for electrotechnical products IEC Guide 104:1997, The preparation
36、of safety publications and the use of basic safety publications and group safety publications ISO/IEC Guide 51:1999, Safety aspects Guidelines for their inclusion in standards ISO/IEC 13943:2000, Fire safety Vocabulary 3 Terms and definitions For the purposes of this document, the following terms an
37、d definitions apply. 3.1 end-product fire test fire test that is described in a relevant product specification and that is carried out on an assembled product which is ready for use NOTE End-product fire tests may be small-scale, intermediate-scale, large-scale or real-scale. BS EN 60695-1-30:200860
38、695-1-30 IEC:2008 7 3.2 preselection process of assessing and choosing candidate materials, components or sub-assemblies for making an end-product 4 Principles of product design considering preselection One objective of equipment design is to choose individual materials, parts, components and sub-as
39、semblies that reduce the likelihood of fire. The preselection procedure, as well as end-product testing, should take into account all possible ignition sources, even those that may have an influence in the event of foreseeable abnormal use, malfunction or failure. The properties required by individu
40、al materials, parts, components and sub-assemblies are determined by their function and related requirements as part of the final end-product. The selection and magnitude of these properties will be dependent upon the details of reasonable foreseeable use, abuse and environmental exposure. An integr
41、al element of preselection is the acquisition of relevant information regarding a materials characteristics. This knowledge can be acquired from an analysis of data obtained from standardized test methods conducted on specified test specimens. Examples of tests which may be relevant to preselection
42、are contained in Annex A. The preselection process should describe how standardized test methods may be used in decision-making processes to minimize the fire hazards from electrotechnical equipment. The preselection process should take into account the relevant features of the end-product, since th
43、e actual performance of the material may be affected by various factors and constructional characteristics. The fire performance of materials, parts, components and sub-assemblies is affected by a number of factors, some of which are listed in Table 1. Consequently, a preselection procedure to asses
44、s the adequate performance of a final end-product requires test data on materials, parts, components and sub-assemblies and should take into account all of the relevant features (for example, the environmental conditions, association with other items, and possible ignition sources). A decision analy
45、sis flow chart (see Figure B.1) is shown in Annex B for an illustrative example of the use of preselection. Table 1 Some of the factors which can affect fire performance in preselection tests Item Factora) Thickness and size of the test specimen b) Shape, homogeneity and volume of the test specimen
46、c) Combination and interaction of materials, parts, components and sub-assemblies d) Position and orientation of the test specimen e) Composition of materials f) Presence of fire-retardant covers, barriers and/or coatings g) Effects of environmental influence and contamination, e.g. effects of tempe
47、rature, ageing and ventilation h) Effects of manufacturing processes i) Type and power of the ignition source j) Location of application of the ignition source k) Time of application of the ignition source l) Presence of any heat sinks, and heat transfer effects BS EN 60695-1-30:2008 8 60695-1-30 IE
48、C:2008 5 Advantages and limitations of preselection A preselection process that can meet the principles described in Clause 4 may present certain advantages and limitations: a) Preselection provides a comparative method to evaluate the performance of a test specimen and can be of assistance in the s
49、election of materials, parts, components and sub-assemblies during the design stage. b) The grading and classification obtained from a comprehensive preselection process may be used to specify a basic minimum performance of materials and parts used in product specifications. c) In general, it cannot be assumed that any direct relationship exists between the results of a preselection test and the results of a test made on the final end-product. However, a ma
