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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11、 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch INTERNATIONAL STANDARD IEC60079-0 Fourth edition2004-01 XB Commission Electrotechnique InternationaleInternational Electrotechnical Commission PRICE CODE Document provided by IHS Licensee=Agip KOC/5950653001,02/11/2004 06:44:03 MSTQuestions or comment
12、s about this message:please call the Document Policy Groupat 1-800-451-1584.-,-,-60079-0 IEC:2004 3 CONTENTS FOREWORD.11 INTRODUCTION.17 1 Scope.19 2 Normative references.21 3 Terms and definitions.27 4 Apparatus grouping and temperature classification.39 4.1 Apparatus grouping.39 4.2 Group II.39 5
13、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 apparatus.45 6.1 General.45 6.2 Mechanical strength of apparatus.45 6.3 Opening
14、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 materials of enclosures.49 7.4 Threaded holes.51 8 Enclosures containing light met
15、als.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.
16、3 Mounting external to apparatus.61 14 Connection facilities and terminal compartments.61 14.1 General.61 14.2 Connection space.61 14.3 Type of protection.61 14.4 Creepage and clearance.61 Document provided by IHS Licensee=Agip KOC/5950653001,02/11/2004 06:44:03 MSTQuestions or comments about this message:please call the Document Policy Groupat 1-800-451-1584.-,-,-60079-0 IEC:2004 5 15 Connection facilities for earthing or bonding conductors.61 15.1 Internal.61 15.2 External.61 15.3 Apparatus no
