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    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

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2009

    Publisher:  National Standards Authority of Ireland

    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.

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    Defines minimum requirements for over/under current relays. It includes a specification of the protection function, measurement characteristics and time delay characteristics.

    General Product Information - (Show below) - (Hide below)

    Development Note 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)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC GUIDE 107:2014 Electromagnetic compatibility - Guide to the drafting of electromagnetic compatibility publications
    IEC 60050-447:2010 International Electrotechnical Vocabulary (IEV) - Part 447: Measuring relays
    EN 60255-1:2010 Measuring relays and protection equipment - Part 1: Common requirements
    IEC 60255-1:1967 Electrical relays - Part 1: Instantaneous all-or-nothing relays
    IEC 61850-7-4:2010 Communication networks and systems for power utility automation - Part 7-4: Basic communication structure - Compatible logical node classes and data object classes
    IEC 60255-8:1990 Electrical relays - Part 8: Thermal electrical relays
    IEC 60050-444:2002 International Electrotechnical Vocabulary (IEV) - Part 444: Elementary relays
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