EN 50017:1998

Cooperating organizations
National foreword
Foreword
General
1. Scope
2. Normative references
3. Definitions
Constructional requirements
4. Enclosure
5. Requirements for filling material
6. Distances
7. Use of materials
8. Cable entries and bushings
9. Energy storing devices
10. Temperature limitation
11. Fault conditions
Verifications and tests
12. Type verifications and tests
13. Routine verifications and tests
Marking
14. Marking
Annex A (normative) Test arrangement for the electrical
        strength test of the filling material
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references

This European Standard contains the specific requirements for the construction, testing and marking of electrical apparatus, parts of electrical apparatus and Ex components in the type of protection powder filling 'q', intended for use in potentially explosive atmospheres of gas, vapour and mist. Potentially explosive atmospheres include the presence of combustible dusts. This European Standard covers only Category 2G and Category M2. NOTE: Powder-filled electrical apparatus and Ex Components may contain electronic circuits, transformers, protection fuses, relays, intrinsically safe electrical apparatus, associated electrical apparatus, switches, etc. This European Standard supplements EN 50014, insofar as it applies to powder-filled electrical apparatus. This European Standard applies only to electrical apparatus, parts of electrical apparatus and Ex components with a rated supply voltage less than or equal to 1000 V; a rated current less than or equal to 16 A; a rated power less than or equal to 1000 VA