1 Scope
2 Normative references
3 Terms and definitions
4 Equipment grouping
   4.1 Group I
   4.2 Group II
   4.3 Group III
   4.4 Equipment for a particular explosive atmosphere
5 Temperatures
   5.1 Environmental influences
   5.2 Service temperature
   5.3 Maximum surface temperature
6 Requirements for all electrical equipment
   6.1 General
   6.2 Mechanical strength of equipment
   6.3 Opening times
   6.4 Circulating currents in enclosures (e.g. of
         large electrical machines)
   6.5 Gasket retention
   6.6 Electromagnetic and ultrasonic energy radiating
         equipment
7 Non-metallic enclosures and non-metallic parts of enclosures
   7.1 General
   7.2 Thermal endurance
   7.3 Resistance to light
   7.4 Electrostatic charges on external non-metallic
         materials
   7.5 Accessible metal parts
8 Metallic enclosures and metallic parts of enclosures
   8.1 Material composition
   8.2 Group I
   8.3 Group II
   8.4 Group III
9 Fasteners
   9.1 General
   9.2 Special fasteners
   9.3 Holes for special fasteners
10 Interlocking devices
11 Bushings
12 Materials used for cementing
13 Ex Components
   13.1 General
   13.2 Mounting
   13.3 Internal mounting
   13.4 External mounting
14 Connection facilities and termination compartments
   14.1 General
   14.2 Termination compartment
   14.3 Type of protection
   14.4 Creepage and clearance
15 Connection facilities for earthing or bonding conductors
   15.1 Equipment requiring earthing
   15.2 Equipment not requiring earthing
   15.3 Size of conductor connection
   15.4 Protection against corrosion
   15.5 Secureness of electrical connections
16 Entries into enclosures
   16.1 General
   16.2 Identification of entries
   16.3 Cable glands
   16.4 Blanking elements
   16.5 Thread adapters
   16.6 Temperature at branching point and entry point
   16.7 Electrostatic charges of cable sheaths
17 Supplementary requirements for rotating machines
   17.1 Ventilation
   17.2 Bearings
18 Supplementary requirements for switchgear
   18.1 Flammable dielectric
   18.2 Disconnectors
   18.3 Group I - Provisions for locking
   18.4 Doors and covers
19 Supplementary requirements for fuses
20 Supplementary requirements for plugs, socket
   outlets and connectors
   20.1 Interlocking
   20.2 Energized plugs
21 Supplementary requirements for luminaires
   21.1 General
   21.2 Covers for luminaires of EPL Mb, EPL Gb, or EPL Db
   21.3 Covers for luminaires of EPL Gc or EPL Dc
   21.4 Sodium lamps
22 Supplementary requirements for caplights and handlights
   22.1 Group I caplights
   22.2 Group II and Group III caplights and handlights
23 Equipment incorporating cells and batteries
   23.1 General
   23.2 Batteries
   23.3 Cell types
   23.4 Cells in a battery
   23.5 Ratings of batteries
   23.6 Interchangeability
   23.7 Charging of primary batteries
   23.8 Leakage
   23.9 Connections
   23.10 Orientation
   23.11 Replacement of cells or batteries
   23.12 Replaceable battery pack
24 Documentation
25 Compliance of prototype or sample with documents
26 Type tests
   26.1 General
   26.2 Test configuration
   26.3 Tests in explosive test mixtures
   26.4 Tests of enclosures
   26.5 Thermal tests
   26.6 Torque test for bushings
   26.7 Non-metallic enclosures or non-metallic parts
         of enclosures
   26.8 Thermal endurance to heat
   26.9 Thermal endurance to cold
   26.10 Resistance to light
   26.11 Resistance to chemical agents for Group I
         electrical equipment
   26.12 Earth continuity
   26.13 Surface resistance test of parts of enclosures
         of non-metallic materials
   26.14 Measurement of capacitance
   26.15 Verification of ratings of ventilating fans
   26.16 Alternative qualification of elastomeric
         sealing O-rings
27 Routine tests
28 Manufacturer's responsibility
   28.1 Conformity with the documentation
   28.2 Certificate
   28.3 Responsibility for marking
29 Marking
   29.1 Location
   29.2 General
   29.3 Ex marking for explosive gas atmospheres
   29.4 Ex marking for explosive dust atmospheres
   29.5 Combined types of protection
   29.6 Multiple types of protection
   29.7 Ga using two independent Gb types of protection
   29.8 Ex Components
   29.9 Small equipment and small Ex Components
   29.10 Extremely small equipment and extremely
         small Ex Components
   29.11 Warning markings
   29.12 Alternate marking of equipment protection
         levels (EPLs)
   29.13 Cells and batteries
   29.14 Converter-fed electrical machines
   29.15 Examples of marking
30 Instructions
   30.1 General
   30.2 Cells and batteries
   30.3 Electrical machines
   30.4 Ventilating fans
Annex A (normative) - Supplementary requirements for
        cable glands
   A.1 General
   A.2 Constructional requirements
   A.3 Type tests
   A.4 Marking
Annex B (normative) - Requirements for Ex Components
Annex C (informative) - Example of rig for resistance to impact
        test
Annex D (informative) - Alternative risk assessment method
        encompassing "equipment protection levels" for Ex
        equipment
   D.1 Historical background
   D.2 General
   D.3 Risk of ignition protection afforded
   D.4 Implementation
Annex E (informative) - Motors supplied by converters
Annex F (Informative) - Temperature rise testing of electric
        machines
Annex G (Informative) - Guideline flowchart for tests of
        non-metallic enclosures nonmetallic parts of enclosures
Bibliography