IEC_60079-18_1992_Encapsulation_In.pdf

IEC 79 PTUL8 92 4844893 0532687 804 NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 79-1 8 Premire dition First edition 1992-1 O Matriel lectrique pour atmosphres explosives gazeuses Partie 18:E nca psu lag e ElectricaO apparatus for explosive gas atmospheres Part 18:Encapsulation in Numro de rfrence Reference number CEMEC 79-1 8:1992 Copyright International Electrotechnical Commission Provided by IHS under license with IECDocument provided by IHS Licensee=Agip KOC/5950653001,02/25/2004 09:14:02 MSTQuestions or comments about this message:please call the Document Policy Groupat 303-397-2295.-,-,-I E C i 9 PT*L 92 4844893 05L2b90 526 Rvision de la prsente publication Le contenu technique des publications de la C E I est cons-tamment revu par la Commission afin dassurer quil reflte bien ltat actuel de ia technique.Les renseignements relatifs ce travail de rvision,ltablissement des ditions rvises et aux mises jour peuvent tre obtenus auprs des Comits nationaux de la C E I et en consultant les documents ci-dessous:Annuairedela CE1 Bulletin de ia CE I Catalogue des publications de i a C E I Publi annueliement Terminologie En ce qui concerne la terminologie gnrale,le lecteur se reportera ia Publication 50 de la C E I:Vocabulaire Electro-technique International(VEI),qui est tablie sous forme&chapitres spars traitant chacun dun sujet dfini,lIndex gnQal tant publi sparment.Des dtails complets sur le VE1 peuvent tre obtenus SUT demande.Les termes et dfinitions figurant dans la prsente publication ont t soit repris du VEI,soit spcifiquement approuvs aux fins de cette publication.Symboles graphiques et littraux Pour les symboles graphiques,symboles littraux et signes dusage gnral approuvs par la C E 1.le lecteur consultera:-la Publication 27 de la C E I:Symboles littraux utiliser en lectrotechnique;-la Publication 617 de la C E I:Symboles graphiques pour schmas.Les symboles et signes contenus dans la prsente publication ont t soit repris des Publications 27 ou 617 de la C EL soit spcifiquement approuvs aux fins de cette publication.Publications de la C E I tablies par le mme Comit dEtudes Lattention du lecteur est attire sur le deuxime feuillet de la couverture,qui numre les publications de la C E I prpares par le Comit dEtudes qui a tabii ia prsente publication.Revision of this publication The technical content of I E C publications is kept under con-stant review by the I E C,thus ensuring that the content reflects current techqology.Information on the work of revision,the issue of revised edi-tions and amendment sheets may be obtained from I E C National Committees and from t h e.foliowing I E C sources:I E C Bulletin I E C Yearbook Catalogue of I E C Publications Published yearly Terminology For general terminology,readers are referred to I E C Publi-cation 50:Intemational Electrotechnical Vocabulary(IEV),which is issued in the form of separate chapters each dealing with a specific field,the General Index being published as a separate booklet.Full details of the IEV will be supplied on request.The terms and definitions contained in the present publication have either been taken from the IEV or have been specifically approved for the purpose of this publication.Graphical and letter symbols For graphical symbols,and letter symbols and signs approved by the I E C for general use,readers are referred to:-I E C Publication 27:Letter symbols to be used in electrical technology;-I E C Publication 617:Graphical symbols for diagrams.The symbols and signs contained in the present publication have either been taken from IEC Publications 27 or 617,or have been specificalh/-ved for the purpose of t h i s pubwon.I E C publications prepared by the same Technical Committee The attention of readers is drawn to the back cover,which lists I E C publications issued by the Technical Committee which has prepared the present publication.Copyright International Electrotechnical Commission Provided by IHS under license with IECDocument provided by IHS Licensee=Agip KOC/5950653001,02/25/2004 09:14:02 MSTQuestions or comments about this message:please call the Document Policy Groupat 303-397-2295.-,-,-IEC 79 PT*iLB 92=4844871 0512691 462 NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 79-1 8 Premire dition First edition 1992-1 O Matriel lectrique pour atmosphres explosives gazeuses Partie 18:E ncapsu lag e Electrical apparatus for explosive gas atmospheres Part 18:Encapsulation m Bureau Central de la Commission Oedrotechnque Intemationale 3.rUedevaremM oeriBve,cuisse Copyright International Electrotechnical Commission Provided by IHS under license with IECDocument provided by IHS Licensee=Agip KOC/5950653001,02/25/2004 09:14:02 MSTQuestions or comments about this message:please call the Document Policy Groupat 303-397-2295.-,-,-I E C 79 PT*LB 92 4844893 0532b92 3T9=-2-SOMMAI RE 79-18 O CE1 Pages AVANT-PROPOS.INTRODUCTION.Artides 1 2 3 4 5 6 7 8 9 10 Domaine dapplication.Rfrences normatives.Dfinitions.Rgles applicables aux compounds.Rg