EN 60079-15:2010

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Temperatures
6 Requirements for electrical equipment
7 Connection facilities and terminal compartments
8 Supplementary requirements for non-sparking
   electrical machines
9 Supplementary requirements for non-sparking fuses
   and fuse assemblies
10 Supplementary requirements for non-sparking plugs
   and sockets
11 Supplementary requirements for non-sparking luminaires
12 Supplementary requirements for equipment incorporating
   non-sparking cells and batteries
13 Supplementary requirements for non-sparking low power
   equipment
14 Supplementary requirements for non-sparking current
   transformers
15 Other non-sparking electrical equipment
16 General supplementary requirements for equipment producing
   arcs, sparks or hot surfaces
17 Supplementary requirements for enclosed-break devices
   and non-incendive components producing arcs, sparks or
   hot surfaces
18 Supplementary requirements for hermetically sealed
   devices producing arcs, sparks or hot surfaces
19 Supplementary requirements for sealed devices producing
   arcs, sparks or hot surfaces
20 Supplementary requirements for restricted-breathing
   enclosures protecting equipment producing arcs, sparks
   or hot surfaces
21 General information on verification and tests
22 Type tests
23 Routine verifications and tests
24 Marking
25 Documentation
26 Instructions
Annex A (informative) - Application, installation, and testing
        considerations for Ex "nA" asynchronous machines
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications
Annex ZY (informative) - Significant changes between this
         European Standard and EN 60079-15
Annex ZZ (informative) - Coverage of essential requirements
         of the directive 94/9/EC

IEC 60079-15:2010 specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection, 'n' intended for use in explosive gas atmospheres. This standard applies to electrical equipment where the rated voltage does not exceed 15 kV r.m.s. a.c. or d.c. This standard supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of this standard takes precedence. The significant technical changes with respect to the previous edition are as follows: - addition of equipment protection levels; - removal of the requirements for energy-limited 'nL' and associated energy limited apparatus '[nL]'; - removal of the requirements for encapsulated Devices 'nC'; - requirements for electrical connections expanded and clarified; - requirements for electrical connections expanded and clarified; - requirements for luminaire ballasts expanded and clarified; - requirements for evaluation and testing of motor rotors clarified; - 15 kV limit for equipment protection by type of protection 'n' added; - spacing requirement for voltages above 10 kV modified; - requirements for restricted breathing enclosures modified; - modification to requirements for motor rotors and stators; - addition of Annex A (informative); - and undated references to IEC 60079-0 included.