CEI EN 60079-11 : 2012

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
    connections on which intrinsic safety depends
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

Describes 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.