BS EN 60695-10-2-2014 Fire hazard testing Abnormal heat Ball pressure test method《着火危险试验 异常热 球压试验方式》.pdf

1、BSI Standards PublicationFire hazard testingPart 10-2: Abnormal heat Ball pressure test methodBS EN 60695-10-2:2014National forewordThis British Standard is the UK implementation of EN 60695-10-2:2014. It isidentical to IEC 60695-10-2:2014. It supersedes BS EN 60695-10-2:2003which is withdrawn.The U

2、K participation in its preparation was entrusted to TechnicalCommittee GEL/89, Fire hazard 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 ofa contract. Users are respon

3、sible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 72008 6ICS 13.220.40; 29.020Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theSt

4、andards Policy and Strategy Committee on 30 June 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60695-10-2:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60695-10-2 June 2014 ICS 13.220.40; 29.020 Supersedes EN 60695-10-2:2003 English Version Fir

5、e hazard testing - Part 10-2: Abnormal heat - Ball pressure test method (IEC 60695-10-2:2014) Essais relatifs aux risques du feu - Partie 10-2: Chaleurs anormales - Essai la bille (CEI 60695-10-2:2014) Prfungen zur Beurteilung der Brandgefahr - Teil 10-2: Unbliche Wrme - Kugeldruckprfung (IEC 60695-

6、10-2:2014) This European Standard was approved by CENELEC on 2014-03-26. 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 bibli

7、ographical references 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 res

8、ponsibility of a CENELEC 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, Fin

9、land, Former Yugoslav 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. European Committee for Elec

10、trotechnical Standardization 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.

11、Ref. No. EN 60695-10-2:2014 E BS EN 60695-10-2:2014EN 60695-10-2:2014 - 2 - Foreword The text of document 89/1203/FDIS, future edition 3 of IEC 60695-10-2, prepared by IEC/TC 89 “Fire hazard testing“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60695-10-2:2014. The fo

12、llowing dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-12-26 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-03-26 This

13、document supersedes EN 60695-10-2:2003. Attention is drawn to the possibility that some of the elements of this 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. This standard covers the Principle Elements of

14、 the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC). Endorsement notice The text of the International Standard IEC 60695-10-2:2014 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibli

15、ography, the following notes have to be added for the standards indicated: IEC 60695-1-10 NOTE Harmonized as EN 60695-1-10. IEC 60695-1-11 NOTE Harmonized as EN 60695-1-11. IEC 60695-4:2012 NOTE Harmonized as EN 60695-4:2012 (not modified) IEC 60695-10-3 NOTE Harmonized as EN 60695-10-3. ISO 306 NOT

16、E Harmonized as EN ISO 306. BS EN 60695-10-2:2014- 3 - EN 60695-10-2:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispens

17、able 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 1 When an International Publication has been modified by common modifications, indicated by (mod), the releva

18、nt EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu Publication Year Title EN/HD Year IEC 60216-4-1 - Electrical insulating materials - Thermal endurance properties - Part 4-1: Ageing ovens - Single-c

19、hamber ovens EN 60216-4-1 - ISO 13943 2008 Fire safety - Vocabulary EN ISO 13943 2010 ISO 3290-1 - Rolling bearings - Balls - Part 1: Steel balls - - IEC Guide 104 - The preparation of safety publications and the use of basic safety publications and group safety publications - - ISO/IEC Guide 51 - S

20、afety aspects - Guidelines for their inclusion in standards - - ISO 293 - Plastics - Compression moulding of test specimens of thermoplastic materials EN ISO 293 - ISO 294 Series Plastics - Injection moulding of test specimens of thermoplastic materials EN ISO 294 Series ISO 295 - Plastics - Compres

21、sion moulding of test specimens of thermosetting materials EN ISO 295 - BS EN 60695-10-2:2014 2 60695-10-2 IEC:2014 CONTENTS INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms and definitions 7 4 General description of the test method 7 5 Apparatus 7 5.1 Loading device . 7 5.2 Test specimen

22、 support . 8 5.3 Heating oven . 8 5.4 Optical measuring instrument . 9 5.5 Temperature measuring equipment 9 6 Test specimens . 9 6.1 End product test method 9 6.2 Material Test method . 9 6.2.1 Test specimen preparation . 9 6.2.2 Test specimen dimensions 9 7 Conditioning 9 8 Test procedure 10 8.1 S

23、election of the test temperature . 10 8.1.1 Method A End product test method 10 8.1.2 Method B Material performance test method 10 8.2 Heating oven and test apparatus setup 11 8.3 Test setup 11 8.4 Test specimen post conditioning 11 8.5 Measurements . 12 9 Evaluation of test results . 12 10 Informat

24、ion to be given in the relevant product standard 13 11 Test Report . 13 Annex A (informative) Correlation between the ball pressure test and the Vicat test of ISO 306 14 Annex B (informative) Depth indentation method . 15 Bibliography 16 Figure 1 Loading device (example) 8 Figure 2 Measurement of di

25、mension d (example) . 12 Table 1 Suggested initial test temperatures . 10 BS EN 60695-10-2:201460695-10-2 IEC:2014 5 INTRODUCTION In the design of any electrotechnical product, the risk of abnormal heat and the potential hazards associated with abnormal heat need to be considered. In this respect th

26、e objective of component, circuit, and product design, as well as the choice of materials, is to reduce to acceptable levels the potential risks during normal operating conditions, reasonable foreseeable abnormal use, malfunction and/or failure. IEC/TC 89 has developed IEC 60695-1-10, together with

27、its companion, IEC 60695-1-11, to provide guidance on how this is to be accomplished. The primary aims of IEC 60695-1-10 and IEC 60695-1-11 are to provide guidance on how: a) to prevent ignition caused by an electrically energized component part, and b) to confine any resulting fire within the bound

28、s of the enclosure of the electrotechnical product in the event of ignition. Secondary aims of IEC 60695-1-10 and IEC 60695-1-11 include the minimization of any flame spread beyond the products enclosure and the minimization of the harmful effects of fire effluents such as heat, smoke, toxicity and/

29、or corrosivity. Fires involving electrotechnical products can also be initiated from external non-electrical sources. Considerations of this nature should be dealt with in the overall fire hazard assessment. This part of IEC 60695 describes a test method where the softening and accelerated material

30、flow under load of a polymeric material is evaluated using a weighted ball-bearing in a heating oven. It should be used to measure, describe, and rank a property of a material in response to elevated temperatures under controlled laboratory conditions. This may be useful for the evaluation of materi

31、als for use in products that may be exposed to excess thermal stress. It should also be used for the evaluation of materials used in end products. It should not be used to solely describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual abnormal conditions.

32、 However, results of this test method may be used as elements of a fire hazard assessment which takes into account all of the factors pertinent to a particular end use. This International Standard may involve hazardous materials, operations, and equipment. It does not purport to address all of the s

33、afety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. BS EN 60695-10-2:2014 6 60695-10-2 IEC:2014 FIRE HAZARD TESTING Part 10-2: Abnorm

34、al heat Ball pressure test method 1 Scope This part of IEC 60695 specifies the ball pressure test as a method for evaluating the softening temperature and accelerated material flow under load of polymeric materials and parts of end products in their ability to resist abnormal heat. It is applicable

35、to the materials used in electrotechnical equipment, subassemblies and components, and to solid electrical insulating materials except ceramics. NOTE The Ball Pressure test method is not appropriate for certain elastomers, foamed materials, and other materials that tend to be soft at room temperatur

36、e. Product Committees are encouraged to evaluate these materials using other methods such as IEC 60695-10-3. This basic safety publication is intended 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. On

37、e of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included i

38、n the relevant publications. 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 the referenced

39、document (including any amendments) applies. IEC 60216-4-1, Electrical insulating materials Thermal endurance properties Part 4-1: Ageing ovens Single-chamber ovens ISO/IEC 13943:2008, Fire safety Vocabulary ISO 3290-1, Rolling bearings Balls Part 1: Steel balls IEC Guide 104, The preparation of saf

40、ety publications and the use of basic safety publications and group safety publications ISO/IEC Guide 51, Safety aspects Guidelines for inclusion in standards ISO 293, Plastics Compression moulding of test specimens of thermoplastic materials ISO 294 (All Parts), Plastics Injection moulding of test

41、specimens of thermoplastic materials ISO 295, Plastics Compression moulding of test specimens of thermosetting materials BS EN 60695-10-2:201460695-10-2 IEC:2014 7 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC 13943:2008, one of which is reprod

42、uced below for the users convenience, as well as the following apply. 3.1 abnormal heat heat that is additional to that resulting from use under normal conditions, up to and including that which causes a fire SOURCE: ISO/IEC 13943:2008, definition 4.1 3.2 end product product that is ready for use wi

43、thout modification Note 1 to entry: An end product can be a component of another end product. SOURCE: IEC 60695-4:2012, definition 3.2.7 3.3 proof test any predetermined and specified test required of an end product to verify its suitability for its intended purpose 4 General description of the test

44、 method To measure and to verify the dimension d of the indentation left by a steel ball applied on a test specimen with a specified force and at a specified temperature. 5 Apparatus 5.1 Loading device The loading device shall consist of a 5 mm 0,05 mm diameter pressure ball (a finished steel ball f

45、or rolling bearings in accordance with ISO 3290-1) attached to a system of weights designed to apply a downward force equivalent to a 20 N 0,2 N load including the mass of the pressure ball. An example of a typical loading device is shown in Figure 1. BS EN 60695-10-2:2014 8 60695-10-2 IEC:2014 1 2

46、3 4 IEC 0314/14 Key 1 Test specimen 2 Pressure ball 3 Weight 4 Test specimen support Figure 1a R = 2,5 mm IEC 0315/14 Figure 1b Figure 1 Loading device (example) 5.2 Test specimen support The test specimen support shall be such that a) it rigidly supports the test specimen in a horizontal position;

47、b) it has sufficient strength to support the loading device; c) it has a smooth flat surface; d) it has sufficiently large mass to prevent a significant reduction in temperature of the apparatus during the installation and removal of the test specimen from the heating oven. NOTE It has been found us

48、eful to mount a separate thermocouple in the centre of the test specimen support approximately 3 mm below the surface to check that the temperature of the test specimen support does not significantly deviate from the test temperature. 5.3 Heating oven The heating oven shall be a single chamber type

49、in accordance with IEC 60216-4-1 with regard to temperature differences, fluctuation, and variations appropriate to the test temperature. BS EN 60695-10-2:201460695-10-2 IEC:2014 9 In addition, the heating oven shall be capable of returning to the set temperature in accordance with the requirements in 8.3 after the heating oven door is closed after inserting the test specimen. 5.4 Optical measuring instrument The optical measuring instrument shall have an optical magnification of