1 Scope
2 Normative references
3 Definitions
4 Descriptive system document
5 Grouping and classification
6 System categories
6.1 General
6.2 Category 'ia'
6.3 Category 'ib'
7 Ambient temperature rating
8 Field wiring
9 Earthing and bonding of intrinsically safe systems
10 Protection against lightning and other electrical
surges
11 Assessment of an intrinsically safe system
11.1 General
11.2 Analysis of inductive circuits
11.3 Failures in field wiring
11.4 Type verifications and type tests
12 Marking
Annex A (normative) Assessment of a simple intrinsically
safe system
Annex B (normative) Assessment of circuits with more than
one source of power
Annex C (informative) Interconnection of non-linear and
linear intrinsically safe circuits
Annex D (normative) Verification of inductive parameters
Annex E (informative) A possible format for descriptive
systems drawings and installation drawings
Annex F (informative) Surge protection of an intrinsically
safe circuit
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
Figures
Tables