EN 60695-1-40-2014 en Fire hazard testing - Part 1-40 Guidance for assessing the fire hazard of electrotechnical products - Insulating liquids.pdf

1、BSI Standards PublicationFire hazard testingPart 1-40: Guidance for assessing the fire hazard of electrotechnical products Insulating liquidsBS EN 60695-1-40:2014National forewordThis British Standard is the UK implementation of EN 60695-1-40:2014. It isidentical to IEC 60695-1-40:2013.The UK partic

2、ipation 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 responsible fo

3、r its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 80269 0ICS 13.220.40; 29.020Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards

4、Policy and Strategy Committee on 31 May 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60695-1-40:2014EUROPEAN STANDARD EN 60695-1-40 NORME EUROPENNE EUROPISCHE NORM April 2014 CENELEC European Committee for Electrotechnical Standardization Comit Europen d

5、e 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 60695-1-40:2014 E ICS 13.220

6、40; 29.020 English version Fire hazard testing - Part 1-40: Guidance for assessing the fire hazard of electrotechnical products - Insulating liquids (IEC 60695-1-40:2013) Essais relatifs aux risques du feu - Partie 1-40: Guide pour lvaluation des risques du feu des produits lectrotechniques - Liqui

7、des isolants (CEI 60695-1-40:2013) Prfungen zur Beurteilung der Brandgefahr - Teil 1-40: Anleitung zur Beurteilung der Brandgefahr von elektrotechnischen Erzeugnissen - Isolierflssigkeit (IEC 60695-1-40:2013) This European Standard was approved by CENELEC on 2013-12-24. CENELEC members are bound to

8、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 references concerning such national standards may be obtained on application to the CEN-CEN

9、ELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centr

10、e 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 Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy

11、 Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60695-1-40:2014EN 60695-1-40:2014 - 2 - Foreword The text of document 89/1191/FDIS, future edition 1 of IEC 60695-1-40, pre

12、pared by IEC/TC 89 “Fire hazard testing“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60695-1-40:2014. The following 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 endor

13、sement (dop) 2014-10-25 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-12-24 This European Standard is to be used in conjunction with EN 60695-1-10. Attention is drawn to the possibility that some of the elements of this document may be the

14、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 60695-1-40:2013 was approved by CENELEC as a European Standard without any modification. In the official version, fo

15、r Bibliography, the following notes have to be added for the standards indicated: ISO 2719:2002 NOTE Harmonised as EN ISO 2719:2002 (not modified). IEC 61039 NOTE Harmonised as.EN 61039. IEC 62271-202 NOTE Harmonised as.EN 62271-202. IEC 60708:2005 NOTE Harmonised as.EN 60708:2005 (not modified). IE

16、C 60794-1-1:2011 NOTE Harmonised as.EN 60794-1-1:2011 (not modified). IEC 60836:2005 NOTE Harmonised as.EN 60836:2005 (not modified). IEC 61099:2010 NOTE Harmonised as.EN 61099:2010 (not modified). IEC 61144:1992 NOTE Harmonised as.EN 61144:1993 (not modified). IEC 61197:1993 NOTE Harmonised as.EN 6

17、1197:1994 (not modified). IEC 62271-105:2012 NOTE Harmonised as.EN 62271-105:2012 (not modified). BS EN 60695-1-40:2014- 3 - EN 60695-1-40:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or

18、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 When an international publication has b

19、een modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60050 International electrotechnical vocabulary IEC 60296 Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear EN 60296 IEC

20、 60465 Specification for unused insulating mineral oils for cables with oil ducts EN 60465 IEC 60695-1-10 Fire hazard testing - Part 1-10: Guidance for assessing the fire hazard of electrotechnical products - General guidelines EN 60695-1-10 IEC 60695-1-11 Fire hazard testing - Part 1-11: Guidance f

21、or assessing the fire hazard of electrotechnical products - Fire hazard assessment EN 60695-1-11 IEC 60695-4 2012 Fire hazard testing - Part 4: Terminology concerning fire tests for electrotechnical products EN 60695-4 2012 IEC/TS 60695-5-2 Fire hazard testing - Part 5-2: Corrosion damage effects of

22、 fire effluent - Summary and relevance of test methods IEC 60695-6-2 Fire hazard testing - Part 6-2: Smoke obscuration - Summary and relevance of test methods EN 60695-6-2 IEC 60695-7-2 Fire hazard testing - Part 7-2: Toxicity of fire effluent - Summary and relevance of test methods EN 60695-7-2 IEC

23、 60695-8-2 Fire hazard testing - Part 8-2: Heat release - Summary and relevance of test methods EN 60695-8-2 IEC/TS 60695-8-3 Fire hazard testing - Part 8-3: Heat release - Heat release of insulating liquids used in electrotechnical products IEC 60944 Guide for maintenance of silicone transformer li

24、quids IEC 61039 Classification of insulating liquids EN 61039 IEC 61203 Synthetic organic esters for electrical purposes - Guide for maintenance of transformer esters in equipment EN 61203 ISO 1716 Reaction to fire tests for building products - Determination of the heat of combustion EN ISO 1716 ISO

25、 2592 Determination of flash and fire points - Cleveland open cup method EN ISO 2592 ISO 13943 2008 Fire safety - Vocabulary EN ISO 13943 2010 BS EN 60695-1-40:2014 2 60695-1-40 IEC:2013 CONTENTS INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 8 4 Classification of insula

26、ting liquids 13 5 Types of electrotechnical equipment containing insulating liquids 13 6 Fire parameters . 14 6.1 General 14 6.2 Ignition . 14 6.2.1 General 14 6.2.2 Combustion 14 6.2.3 Potential fire growth 14 6.2.4 Fire effluent 14 7 Fire scenarios 14 7.1 General 14 7.2 Origin fire scenarios . 14

27、7.2.1 General 14 7.2.2 Major causes of fire 15 7.2.3 Minor causes of fire 16 7.2.4 Pool fires 16 7.2.5 Burning spray . 16 7.2.6 Ignition on hot surface 16 7.3 Victim fire scenarios . 16 8 Protective measures against fire 17 9 Considerations for the selection of test methods 17 9.1 General 17 9.2 Typ

28、e tests 18 9.3 Sampling tests . 18 9.4 Arc resistance tests . 18 9.5 Relevance of test results to fire scenario 18 Annex A (informative) History of insulating liquids 19 Annex B (informative) Preventive and protective measures against fire 20 B.1 General 20 B.2 Physical protective measures . 20 B.3

29、Chemical protective measures . 20 B.4 Electrical protective measures . 20 B.5 Sensing devices . 20 B.6 Maintenance and inspection . 20 Annex C (informative) Transformers. 22 C.1 General 22 C.2 Transformer choice 22 Annex D (informative) Power capacitors 24 BS EN 60695-1-40:201460695-1-40 IEC:2013 3

30、Annex E (informative) Cables. 25 E.1 Power cables . 25 E.2 Communication cables . 26 E.3 Cables with water blocking compounds 26 E.4 Cable terminations . 26 Annex F (informative) Bushings . 27 Annex G (informative) Switchgear 28 Bibliography 29 Figure E.1 Oil viscosity 26 Table 1 Classification of i

31、nsulating liquids 13 BS EN 60695-1-40:2014 6 60695-1-40 IEC:2013 INTRODUCTION In the 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 product design as well as the cho

32、ice of materials is to reduce to acceptable levels the potential risks of fire even in the event of foreseeable abnormal use, malfunction or failure. For more than 100 years, insulating liquids based on mineral oil have been used for the insulating and cooling of electrical transformers and some oth

33、er types of electrotechnical equipment. During the last 70 years, synthetic insulating liquids have been developed and used in specific electrotechnical applications for which their properties are particularly suitable. However, for technical and economic reasons, highly refined mineral oil continue

34、s to be the most widely used insulating liquid for use in transformers, the major end use application. Their safe installation is covered by local, national and international regulations. The fire safety record of electrotechnical equipment containing insulating liquids is good, for both mineral oil

35、 and synthetic liquids. In recent years improvements in design and protective measures against fire have reduced the fire hazard for electrotechnical equipment containing mineral oil. However, as for all forms of electrotechnical equipment, the objective should be to reduce the likelihood of fire ev

36、en in the event of foreseeable abnormal use. The practical aim is to prevent ignition, but if ignition occurs, to control the fire, preferably within the enclosure of the electrotechnical equipment. BS EN 60695-1-40:201460695-1-40 IEC:2013 7 FIRE HAZARD TESTING Part 1-40: Guidance for assessing the

37、fire hazard of electrotechnical products Insulating liquids 1 Scope This international standard provides guidance on the minimization of fire hazard arising from the use of electrical insulating liquids, with respect to: a) electrotechnical equipment and systems, b) people, building structures and t

38、heir contents. 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 11and ISO/IEC Guide 51 2. It is not intended for use by manufacturers or certification bodies. One of the responsibili

39、ties of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its 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 date

40、d references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050, International electrotechnical vocabulary IEC 60296, Fluids for electrotechnical applications Unused mineral insulating oils for transfor

41、mers and switchgear IEC 60465, Specification for unused insulating mineral oils for cables with oil ducts IEC 60695-1-10, Fire hazard testing Part 1-10: Guidance for assessing the fire hazard of electrotechnical products General guidelines IEC 60695-1-11, Fire hazard testing Part 1-11: Guidance for

42、assessing the fire hazard of electrotechnical products Fire hazard assessment IEC 60695-4:2012, Fire hazard testing Part 4: Terminology concerning fire tests for electrotechnical products IEC 60695-6-2, Fire hazard testing Part 6-2: Smoke obscuration Summary and relevance of test methods IEC 60695-7

43、2, Fire hazard testing Part 7-2: Toxicity of fire effluent Summary and relevance of test methods _ 1Numbers in square brackets refer to the Bibliography. BS EN 60695-1-40:2014 8 60695-1-40 IEC:2013 IEC 60695-8-2, Fire hazard testing Part 8-2: Heat release Summary and relevance of test methods IEC 6

44、0944, Guide for the maintenance of silicone transformer liquids IEC 61039, Classification of insulating liquids IEC 61203, Synthetic organic esters for electrical purposes Guide for maintenance of transformer esters in equipment IEC/TS 60695-5-2, Fire hazard testing Part 5-2: Corrosion damage effect

45、s of fire effluent Summary and relevance of test methods IEC/TS 60695-8-3, Fire hazard testing Part 8-3: Heat release Heat release of insulating liquids used in electrotechnical products ISO 1716, Reaction to fire tests for products Determination of the gross heat of combustion (calorific value) ISO

46、 2592, Determination of flash and fire points Cleveland open cup method ISO 13943:2008, Fire safety Vocabulary 3 Terms and definitions For the purposes of this document, terms and definitions given in ISO 13943:2008 and IEC 60695-4:2012, some of which are reproduced below for the users convenience,

47、as well as the following additional definitions, apply. 3.1 arc electrical breakdown of a gas which produces a sustained plasma discharge, resulting from an electric current flowing through a normally nonconductive medium such as air 3.2 bund outer wall or tank designed to retain the contents of an

48、inner container in the event of leakage or spillage Note 1 to entry: A bund should be designed to capture well in excess of the volume of liquids held within the bund area. 3.3 bushing insulating liner in an opening through which a conductor passes 3.4 combustion exothermic reaction of a substance w

49、ith an oxidizing agent Note 1 to entry: Combustion generally emits fire effluent accompanied by flames and/or glowing. SOURCE: ISO 13943:2008, 4.46 3.5 corrosion damage physical and/or chemical damage or impaired function caused by chemical action BS EN 60695-1-40:201460695-1-40 IEC:2013 9 SOURCE: ISO 13943:2008, 4.56 3.6 enclosure electrotechnical external casing protecting the electrical and mechanical parts of apparatus Note 1 to entry: The term e