I.S. EN 60255-151:2009
Current
The latest, up-to-date edition.
MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 151: FUNCTIONAL REQUIREMENTS FOR OVER/UNDER CURRENT PROTECTION
Hardcopy , PDF
English
01-01-2009
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
FOREWORD
1 Scope and object
2 Normative references
3 Terms and definitions
4 Specification of the function
5 Performance specification
6 Functional test methodology
7 Documentation requirements
Annex A (normative) - Constants for dependent time operating
and reset characteristics
Annex B (informative) - Reset time determination for relays
with trip output only
Bibliography
Annex ZA (normative) - Normative references to international
publications with their corresponding European
publications
Defines minimum requirements for over/under current relays. It includes a specification of the protection function, measurement characteristics and time delay characteristics.
| DevelopmentNote |
Supersedes I.S. EN 60255-3. (04/2010) For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
|
| DocumentType |
Standard
|
| Pages |
36
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Current
|
| Standards | Relationship |
| IEC 60255-151:2009 | Identical |
| EN 60255-151:2009 | Identical |
| BS EN 60255-151:2009 | Equivalent |
| UNE-EN 60255-151:2009 | Equivalent |
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