NBN EN 60079-15 : 2010

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 General
   4.1 Apparatus grouping and temperature
         classification
   4.2 Potential ignition sources
5 Temperatures
   5.1 Environmental influences
   5.2 Service temperature
   5.3 Maximum surface temperature
   5.4 Surface temperature and ignition temperature
   5.5 Small components
6 Requirements for electrical apparatus
   6.1 General
   6.2 Mechanical strength of apparatus
   6.3 Opening times
   6.4 Circulating currents
   6.5 Gasket retention
   6.6 Degree of protection of enclosure (IP)
   6.7 Clearances, creepage distances and separations
   6.8 Electric strength
7 Non-metallic enclosures and non-metallic parts
   of enclosures
   7.1 General
   7.2 Thermal endurance
   7.3 Electrostatic charges on external non-metallic
         materials of enclosures
   7.4 Threaded holes
   7.5 Thermal shock
   7.6 Resistance to light
8 Enclosures containing light metals
   8.1 Material composition
   8.2 Threaded holes
9 Fasteners
   9.1 General
   9.2 Special fasteners
10 Interlocking devices
11 Bushings
12 Materials used for cementing
13 Ex components
   13.1 Type of protection "n"
   13.2 Mounting
   13.3 Internal mounting
   13.4 External mounting
14 Connection facilities and terminal compartments
   14.1 General
   14.2 Connection for external conductors
   14.3 Internal connection facilities
15 Connection facilities for earthing or bonding
   conductors
16 Entries into enclosures
17 Supplementary requirements for non-sparking electrical
   machines
   17.1 General
   17.2 Connection facilities for external conductors
   17.3 Neutral point connections
   17.4 Radial air gap
   17.5 Ventilation systems
   17.6 Bearing seals and shaft seals
   17.7 Rotor cages
   17.8 Surface temperature limitation
   17.9 Additional requirements for machines with rated
         voltage greater than 1kV
18 Supplementary requirements for switchgear
19 Supplementary requirements for non-sparking fuses and
   fuse assemblies
   19.1 Fuses
   19.2 Temperature class of an apparatus
   19.3 Fuse mounting
   19.4 Fuse enclosures
   19.5 Replacement fuse identification
20 Supplementary requirements for non-sparking plugs and
   sockets
   20.1 Plugs and sockets for external connections
   20.2 Maintaining degree of protection
   20.3 Plugs and sockets for internal connections
   20.4 Sockets that do not have plugs inserted in normal
         operation
21 Supplementary requirements for non-sparking luminaires
   21.1 General
   21.2 Construction
   21.3 Other apparatus containing light sources
22 Supplementary requirements for apparatus incorporating
   non-sparking cells and batteries
   22.1 Categorization of cells and batteries
   22.2 General requirements for cells and batteries of
         types 1 and 2
   22.3 Charging of type 1 cells and batteries
   22.4 Charging of type 2 cells and batteries
22.5 Requirements for type 3 secondary batteries
   22.6 Verification and tests
23 Supplementary requirements for non-sparking low
   power apparatus
24 Supplementary requirements for non-sparking current
   transformers
25 Other electrical apparatus
26 General supplementary requirements for apparatus
   producing arcs, sparks or hot surfaces
27 Supplementary requirements for enclosed-break devices
   and non-incendive components producing arcs, sparks
   or hot surfaces
   27.1 Type testing
   27.2 Ratings
   27.3 Construction of enclosed-break devices
28 Supplementary requirements for hermetically sealed
   devices producing arcs, sparks or hot surfaces
29 Supplementary requirements for sealed devices or
   encapsulated devices producing arcs, sparks or hot
   surfaces
   29.1 Non metallic materials
   29.2 Opening
   29.3 Internal spaces
   29.4 Handling
   29.5 Resilient gasket and seals
   29.6 Encapsulating compounds
   29.7 Thickness of encapsulant
   29.8 Type tests
30 Supplementary requirements for energy-limited apparatus
   and circuits producing arcs, sparks or hot surfaces
   30.1 General
   30.2 Associated energy-limited
         apparatus
   30.3 Energy-limited apparatus
   30.4 Self protected energy-limited apparatus
   30.5 Separation of conducting parts
   30.6 Plugs and sockets
   30.7 Protection against polarity reversal
   30.8 Requirements for components on which energy
         limitation depends
   30.9 Battery powered apparatus
   30.10 Marking and documentation
31 Supplementary requirements for restricted-breathing
   enclosures protecting apparatus producing arcs, sparks
   or hot surfaces
   31.1 General
   31.2 Test point for restricted breathing apparatus
   31.3 Test point exemption
   31.4 Gasket and seal requirements
   31.5 Non-resilient seals
   31.6 Maintenance considerations
   31.7 Internal fans
32 General information on verification and tests
33 Type tests
   33.1 Representative samples
   33.2 Test configuration
   33.3 Tests for enclosures on which the type of
         protection depends
   33.4 Test for enclosed-break devices and non-incendive
         components
   33.5 Tests for sealed devices and encapsulated devices
   33.6 Assessment and test of energy-limited apparatus
         and circuits
   33.7 Tests for restricted-breathing enclosures
   33.8 Test for screw lampholders
   33.9 Test for starter holders for luminaires
   33.10 Tests for electronic starters for tubular
         fluorescent lamps and for ignitors for high
         pressure sodium or metal halide lamps
   33.11 Test for wiring of luminaires subject to
         high-voltage impulses from ignitors
   33.12 Mechanical shock test for batteries
   33.13 Insulation resistance test for batteries
   33.13 Insulation resistance test for batteries machines
34 Routine verifications and tests
   34.1 General
   34.2 Specific routine tests
35 Marking
   35.1 General
   35.2 Additional marking for batteries
   35.3 Examples of marking
36 Documentation
37 Instructions
Bibliography
Annex ZA (normative) Normative references to international
                       publications with their corresponding
                       European publications
Annex ZZ (informative) Coverage of essential requirements of
                       the Directive
Figures
Tables

Describes requirements for the construction, testing and marking for Group II electrical apparatus with type of protection, "n" intended for use in explosive gas atmospheres.