1、 Electrical apparatus for explosive gas atmospheres Part 0:General requirements Reference number IEC 60079-0:2004(E)INTERNATIONAL STANDARD IEC60079-0 Fourth edition2004-01 This English-language version is derived from the original bilingual publication by leaving out all French-language pages.Missin
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10、thismessage:please call the Document Policy Group at 303-397-2295.-,-,-Electrical apparatus for explosive gas atmospheres Part 0:General requirements For price,see current catalogue IEC 2004 Copyright-all rights reserved No part of this publication may be reproduced or utilized in any form or by any
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12、ch INTERNATIONAL STANDARD IEC60079-0 Fourth edition2004-01 XB Commission Electrotechnique InternationaleInternational Electrotechnical Commission PRICE CODE Copyright International Electrotechnical Commission Provided by IHS under license with IECDocument provided by IHS Licensee=Fluor Corp no FPPPV
13、 per administrator/usenew u/2110503106,03/04/2004 23:37:49 MST Questions or comments about thismessage:please call the Document Policy Group at 303-397-2295.-,-,-60079-0 IEC:2004 3 CONTENTS FOREWORD.11 INTRODUCTION.17 1 Scope.19 2 Normative references.21 3 Terms and definitions.27 4 Apparatus groupi
14、ng and temperature classification.39 4.1 Apparatus grouping.39 4.2 Group II.39 5 Temperatures.39 5.1 Environmental influences.39 5.2 Service temperature.41 5.3 Maximum surface temperature.41 5.4 Surface temperature and ignition temperature.43 5.5 Small components.43 6 Requirements for all electrical
15、 apparatus.45 6.1 General.45 6.2 Mechanical strength of apparatus.45 6.3 Opening times.45 6.4 Circulating currents.47 6.5 Gasket retention.47 7 Non-metallic enclosures and non-metallic parts of enclosures.47 7.1 General.47 7.2 Thermal endurance.49 7.3 Electrostatic charges on external non-metallic m
16、aterials of enclosures.49 7.4 Threaded holes.51 8 Enclosures containing light metals.53 8.1 Material composition.53 8.2 Threaded holes.53 Fasteners.53 9.1 General.53 9.2 Special fasteners.55 9.3 Holes for special fasteners.55 10 Interlocking devices.59 11 Bushings.59 12 Materials used for cementing.59 13 Ex components.59 13.1 General.59 13.2 Mounting internal to apparatus.59 13.3 Mounting external to apparatus.61 14 Connection facilities and terminal compartments.61 14.1 General.61 14.2 Connecti
