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
23-10-2009
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
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.