NEN EN 50394-1 : 2004
Current
The latest, up-to-date edition.
ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GROUP I - INTRINSICALLY SAFE SYSTEMS - PART 1: CONSTRUCTION AND TESTING
12-01-2013
Introduction
1 Scope
2 Normative references
3 Definitions
4 Categories of intrinsically safe electrical systems
(in accordance with EN 50014)
5 Interconnecting wiring/cables used in an intrinsically
safe electrical system
6 Accessories for intrinsically safe electrical systems
7 Type tests and assessment
8 Marking of intrinsically safe electrical systems
9 Descriptive system document
10 Instructions
Annex A (normative) - Requirements for cables
Annex B (informative) - Typical descriptive system drawing
Annex C (normative) - Assessment of a simple intrinsically
safe system
Annex D (normative) - Assessment of circuits with more than
one linear source of power
Annex E (normative) - Trapezoidal power supplies
Annex F (normative) - Non-linear power supplies
Annex G (normative) - Verification of inductive parameters
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