1、BSI Standards PublicationE x p l o s i v e a t m o s p h e r e sPart 6: Equipment protection by liquid immersion “o”BS EN 60079-6:2015National forewordThis British Standard is the UK implementation of EN 60079-6:2015.It is identical to IEC 60079-6:2015. It supersedes BS EN 60079-6:2007 which is with
2、drawn.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31, Equipment for explosive atmospheres.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
3、 contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 79836 8ICS 29.260.20 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under th
4、e authority of theStandards Policy and Strategy Committee on 31 December 2015.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60079-6:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60079-6 December 2015 ICS 29.260.20 Supersedes EN 60079-6:2007 English
5、Version Explosive atmospheres - Part 6: Equipment protection by liquid immersion “o“ (IEC 60079-6:2015) Atmosphres explosives - Partie 6: Protection du matriel par immersion dans le liquide “o“ (IEC 60079-6:2015) Explosionsgefhrdete Bereiche - Teil 6: Gerteschutz durch Flssigkeitskapselung “o“ (IEC
6、60079-6:2015) This European Standard was approved by CENELEC on 2015-03-27. 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 bi
7、bliographical 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
8、responsibility 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,
9、Finland, 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 E
10、lectrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Member
11、s. Ref. No. EN 60079-6:2015 E BS EN 60079-6:2015EN 60079-6:2015 (E) 2 European foreword The text of document 31/1157/FDIS, future edition 4 of IEC 60079-6, prepared by IEC/TC 31 “Equipment for explosive atmospheres“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60079-6
12、:2015. 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 endorsement (dop) 2016-06-11 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 201
13、8-03-27 This document supersedes EN 60079-6:2007. 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 document has been prepared unde
14、r a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document. Endorsement notice The text of the
15、International Standard IEC 60079-6:2015 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60079 series NOTE Harmonized in the series EN 60079. IEC 62770 NOTE Harmon
16、ized as EN 62770. BS EN 60079-6:2015EN 60079-6:2015 (E) 3 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 indispensable for its app
17、lication. 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 relevant EN/HD applies
18、. 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 60079-0 - Explosive atmospheres - Part 0: Equipment - General requirements EN 60079-0 - IEC 60156 - Insulating liquids - Dete
19、rmination of the breakdown voltage at power frequency - Test method EN 60156 - IEC 60247 - Insulating liquids - Measurement of relative permittivity, dielectric dissipation factor (tan d) and d.c. resistivity EN 60247 - IEC 60296 - Fluids for electrotechnical applications - Unused mineral insulating
20、 oils for transformers and switchgear EN 60296 - IEC 60529 - Degrees of protection provided by enclosures (IP Code) - - IEC 60814 - Insulating liquids - Oil-impregnated paper and pressboard - Determination of water by automatic coulometric Karl Fischer titration EN 60814 - IEC 60836 - Specifications
21、 for unused silicone insulating liquids for electrotechnical purposes EN 60836 - IEC 61099 - Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes EN 61099 - IEC 61125 - EN 61125 - IEC 62021-1 - Insulating liquids - Determination of acidity - Part 1: Automat
22、ic potentiometric titration EN 62021-1 - IEC 62535 - Insulating liquids - Test method for detection of potentially corrosive sulphur in used and unused insulating oil EN 62535 - ISO 2592 - Determination of flash and fire points - Cleveland open cup method EN ISO 2592 - ISO 2719 - Determination of fl
23、ash point - Pensky-Martens closed cup method EN ISO 2719 - ISO 3016 - Petroleum products - Determination of pour point - - BS EN 60079-6:2015EN 60079-6:2015 (E) 4 ISO 3104 - Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculation of dynamic viscosit
24、y EN ISO 3104 - BS EN 60079-6:2015EN 60079-6:2015 (E) 5 Annex ZZ (informative) Relationship between this European standard and the essential requirements of Directive 94/9/EC aimed to be covered This European standard has been prepared under a Commissions standardisation request to provide one volun
25、tary means of conforming to essential of Directive 94/9/EC of the European Parliament and the Council of 23 March 1994 on the approximation of the laws of the Member States concerning equipment and protective systems intended for use in potentially explosive atmospheres. Once this standard is cited
26、in the Official Journal of the European Union under that Directive, compliance with the normative clauses of this standard given in Table ZZ.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding essential requirements of that Directive, and as
27、sociated EFTA regulations. Table ZZ.1 Correspondence between this European standard and Annex II of Directive 94/9/EC Essential Requirements of Directive Clause(s) / sub-clause(s) of this EN Remarks / Notes 1.0.1. 4, 5 1.0.2. 4 1.0.3. 7, 8 1.0.4. Not covered 1.0.5. 7 1.0.6. 8 1.1.1. 4, 5 1.1.2. 4, 5
28、 1.1.3. 5 1.2.1. 4, 5 1.2.2. 4 1.2.3. Not covered 1.2.4. 4 1.2.5. Not covered 1.2.6. 4.5 1.2.7. Not covered 1.2.8. Not covered BS EN 60079-6:2015EN 60079-6:2015 (E) 6 1.2.9. Not covered 1.3.1. All Covered by the principle of the type of protection “o“: Immersion of potential ignition sources in oil.
29、 1.3.2. 4.5 1.3.3. Not covered 1.3.4. Not covered 1.3.5. Not covered 1.4.1. 4 1.4.2. 4 1.5.1 4.5, 4.6, 4.7 1.5.2. Not covered 1.5.3. Not covered 1.5.4. 4.6, 4.7 1.5.5. 4.6, 4.7 1.5.6. Not covered 1.5.7. Not covered 1.5.8. Not covered 1.6.1. Not covered 1.6.2. Not covered 1.6.3. Not covered 1.6.4. 4.
30、9 1.6.5. Not covered 2.0.1.1. 4, 5 2.0.1.2. 4.5 2.0.1.3. 4.8 2.0.1.4. Not covered 2.0.2.1. 4.1, 4.8 2.0.2.2. 4.5 BS EN 60079-6:2015EN 60079-6:2015 (E) 7 2.0.2.3 4.5 and 2.1.1.1. 4, 5 2.1.1.2. 4.8 2.1.1.3. 4.5 2.1.2.1. 4, 5 2.1.2.2. Not covered 2.1.2.3. Not covered 2.2.1.1. 4.1, 4.2.2, 4.5 2.2.1.2. 4
31、.8 2.2.1.3. 4.5 and 2.2.2.1 4.1, 4.2.2, 4.5 2.2.2.2. Not covered 2.2.2.3. Not covered 2.2.2.4. Not covered 2.3.1.1. 4.1, 4.2.3, 4.5 2.3.1.2. 4.8 2.3.2.1. 4.1, 4.2.3, 4.5 2.3.2.2. 4.8 2.3.2.3. Not covered 3.0.1. Not covered 3.0.2. Not covered 3.0.3. Not covered 3.0.4. Not covered 3.1.1. Not covered 3
32、.1.2. Not covered 3.1.3. Not covered 3.1.4. Not covered 3.1.5. Not covered BS EN 60079-6:2015EN 60079-6:2015 (E) 8 3.1.6. Not covered 3.1.7. Not covered 3.1.8. Not covered WARNING 1: Presumption of conformity stays valid only as long as a reference to this European standard is maintained in the list
33、 published in the Official Journal of the European Union. Users of this standard should consult frequently the latest list published in the Official Journal of the European Union. WARNING 2: Other Union legislation may be applicable to the product falling within the scope of this standard. BS EN 600
34、79-6:2015 2 IEC 60079-6:2015 IEC 2015 CONTENTS FOREWORD . 4 1 Scope 6 2 Normative references. 6 3 Terms and definitions 7 4 Constructional requirements 8 4.1 General . 8 4.2 Levels of protection and requirements of electrical equipment 8 4.2.1 Level of Protection . 8 4.2.2 Requirements for Level of
35、Protection “ob” . 9 4.2.3 Requirements for Level of Protection “oc” . 9 4.3 Switching device . 9 4.4 Creepage and clearance . 9 4.5 Liquid containment enclosures. 10 4.5.1 General . 10 4.5.2 Sealed enclosures . 10 4.5.3 Unsealed enclosures 10 4.5.4 Outlet of breathing device or pressure relief devic
36、e . 10 4.5.5 Enclosures intended to be opened 10 4.5.6 Determination of the maximum/minimum criteria of the protective liquid 10 4.6 Immersion depth . 11 4.7 Protective liquid level indication . 11 4.7.1 General . 11 4.7.2 Remote-indicating protective liquid level indicator . 12 4.7.3 Safety devices
37、 for Level of Protection “ob” 12 4.8 Temperature limitations . 12 4.8.1 General . 12 4.8.2 Maximum Surface Temperature 12 4.8.3 Flashpoint of the protective liquid . 12 4.9 Field wiring connections to liquid immersion equipment 12 4.10 Constructional elements of enclosures 12 4.10.1 Operating rods,
38、shafts etc. . 12 4.10.2 Devices for draining of liquid 13 5 Protective Liquid 13 5.1 Protective liquid specification 13 5.2 Detailed alternative specification . 13 5.3 Group I equipment 13 5.4 Liquid contamination and gassing that may result from arcing 13 5.5 Total volume of the protective liquid.
39、14 6 Verifications and tests . 14 6.1 Type tests . 14 6.1.1 Overpressure test on sealed enclosures . 14 6.1.2 Reduced pressure test on sealed enclosures 14 6.1.3 Overpressure test on unsealed enclosures . 14 6.1.4 Maximum temperature 14 6.1.5 Switching Tests 15 6.2 Routine tests . 15 BS EN 60079-6:2
40、015IEC 60079-6:2015 IEC 2015 3 6.2.1 Sealed enclosures . 15 6.2.2 Unsealed enclosures 15 7 Marking . 15 8 Instructions 16 Annex A (normative) Selection and erection requirements 17 Annex B (normative) Maintenance requirements . 18 Annex C (normative) Repair and Overhaul requirements . 19 Bibliograph
41、y . 20 Table 1 Working voltage . 9 Table 2 Depth of immersion . 11 Table B.1 Inspection requirements . 18 BS EN 60079-6:2015 4 IEC 60079-6:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ EXPLOSIVE ATMOSPHERES Part 6: Equipment protection by liquid immersion “o“ FOREWORD 1) The Internationa
42、l Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic f
43、ields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any
44、IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardiz
45、ation (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has represe
46、ntation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC c
47、annot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publicat
48、ions. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas,
49、access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indire
