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NEN EN 50020 : 2002
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - INTRINSIC SAFETY "I"
01-02-2007
12-01-2013
Cooperating organizations
National foreword
Foreword
1. Scope
2. Normative references
3. Definitions
4. Grouping and classification of intrinsically safe
apparatus and associated apparatus
5. Categories of electrical apparatus
6. Apparatus requirements
7. Components on which intrinsic safety depends
8. Infallible components, infallible assemblies of
components and infallible connections
9. Diode safety barriers
10. Type verifications and type tests
11. Routine verifications and tests
12. Marking
13. Documentation
Annexes
A. (normative) Assessment of intrinsically safe circuits
B. (normative) Spark test apparatus for intrinsically
safe circuits
C. (informative) Measurement of creepage distances,
clearance and separation distances through casting
compound and through solid insulation
D. (normative) Encapsulation
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references
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