I.S. EN 60079-11:2012

National Foreword
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Grouping and classification of intrinsically safe
   apparatus and associated apparatus
5 Levels of protection and ignition compliance
   requirements of electrical apparatus
6 Apparatus construction
7 Components on which intrinsic safety depends
8 Infallible components, infallible assemblies of
   components and infallible
9 Supplementary requirements for specific apparatus
10 Type verifications and type tests
11 Routine verifications and tests
12 Marking
13 Documentation
Annex A (normative) - Assessment of intrinsically safe
        circuits
Annex B (normative) - Spark test apparatus for
        intrinsically safe circuits
Annex C (informative) - Measurement of creepage distances,
        clearances and separation distances through
        casting compound and through solid insulation
Annex D (normative) - Encapsulation
Annex E (informative) - Transient energy test
Annex F (normative) - Alternative separation distances
        for assembled printed circuit boards and
        separation of components
Annex G (normative) - Fieldbus intrinsically safe concept
        (FISCO) - Apparatus requirements
Annex H (informative) - Ignition testing of semiconductor
        limiting power supply circuits
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 60079-11:2007
Annex ZZ (informative) - Coverage of Essential
         Requirements of EU Directives

Defines the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for connection to intrinsically safe circuits which enter such atmospheres.