BS-EN-60079-18-2004.pdf
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1、BRITISH STANDARD BS EN 60079-18:2004 Incorporating Corrigenda Nos. 1, 2 and 3 Electrical apparatus for explosive gas atmospheres Part 18: Construction, test and marking of type of protection encapsulation “m” electrical apparatus The European Standard EN 60079-18:2004 has the status of a British Sta
2、ndard ICS 29.260.20 ? BS EN 60079-18:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 22 April 2004 BSI August 2006 ISBN 0 580 43703 5 National foreword This British Standard is the official English language version of EN 60079-18:2004, i
3、ncorporating Corrigendum April 2006. It is identical with IEC 60079-18:2004. It supersedes BS 5501-8:1988 which remains current as obsolescent but will be withdrawn no later than 1 April 2007. The UK participation in its preparation was entrusted to Technical Committee GEL/31, Electrical apparatus f
4、or use in explosive atmospheres, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found
5、 in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are respon
6、sible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep th
7、e UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 34 and a back cover. The BSI copyright notice displayed in this document indica
8、tes when the document was last issued. Amendments issued since publication Amd. No. DateComments 15194 Corrigendum No. 1 26 May 2004Insertion of missing page (page 24) and the renumbering of subsequent pages 15208 Corrigendum No. 2 7 June 2004Correction to pages 24 and 25 16393 August 2006 Incorpora
9、tes Annex ZZ and corrects foreword Corrigendum No. 3 EUROPEAN STANDARD EN 60079-18 NORME EUROPENNE EUROPISCHE NORM April 2004 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secre
10、tariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60079-18:2004 E ICS 29.260.20 Supersedes EN 50028:1987 English version Electrical apparatus for explosive gas atmospheres Part 18:
11、Construction, test and marking of type of protection encapsulation “m“ electrical apparatus (IEC 60079-18:2004) Matriel lectrique pour atmosphres explosives gazeuses Partie 18: Construction, essais et marquage des matriels lectriques du type de protection par encapsulage “m“ (CEI 60079-18:2004) Elek
12、trische Betriebsmittel fr gasexplosionsgefhrdete Bereiche Teil 18: Konstruktion, Prfung und Kennzeichnung elektrischer Betriebsmittel mit der Schutzart Vergusskapselung “m“ (IEC 60079-18:2004) This European Standard was approved by CENELEC on 2004-04-01. CENELEC members are bound to comply with the
13、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 Central Secretariat or
14、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 Central Secretariat has the same status as the officia
15、l versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia,
16、 Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 31/482/FDIS, future edition 2 of IEC 60079-18, prepared by IEC TC 31, Electrical apparatus for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60079-18 on 2004-04-01.
17、 This European Standard supersedes EN 50028:1987. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2005-01-01 latest date by which the national standards conflicting with the E
18、N have to be withdrawn (dow) 2007-04-01 This European Standard was prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and supports the essential requirements of Directive 94/9/EC. See Annex ZZ. Annexes ZA and ZZ have been added by CENELEC. Th
19、e contents of the corrigendum of April 2006 have been included in this copy. _ Endorsement notice The text of the International Standard IEC 60079-18:2004 was approved by CENELEC as a European Standard without any modification. _ Page 2 EN 6007918:2004 EN 6007918:2004 Page 3 CONTENTS 1Scope5 2Normat
20、ive references5 3Definitions .6 4General .7 4.1. Apparatus group and temperature classification .7 4.2. Level of protection 7 4.3. Level of protection “ma”.8 4.4. Level of protection “mb”.8 4.5. Supply specifications.8 5Requirements for compounds.8 5.1. General8 5.2. Specification 8 6Temperatures9 6
21、.1. General9 6.2. Temperature limitation.9 6.3. Determination of the limiting temperature 10 7Constructional requirements . 10 7.1. General 10 7.2. Determination of faults. 10 7.3. Free space in the encapsulation 12 7.4. Thickness of the compound 13 7.5. Switching contacts. 18 7.6. External connecti
22、ons 18 7.7. Protection of bare live parts. 19 7.8. Cells and batteries. 19 7.9. Protective devices . 22 8Type tests 23 8.1. Tests on the compound water absorption test 23 8.2. Tests on the apparatus 23 9Routine verifications and tests 27 9.1. Visual inspections 27 9.2. Dielectric strength test. 27 1
23、0 Marking . 28 Annex A (informative) Basic requirements for compounds for “m” apparatus. 29 Annex B (normative) Allocation of test samples 30 Annex C (normati ve) Test procedure during thermal cycling test. 31 Annex ZA (normative) Normative references to international publications with their corresp
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