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    I.S. EN 60255-127:2014

    Current The latest, up-to-date edition.

    MEASURING RELAYS AND PROTECTION EQUIPMENT - PART 127: FUNCTIONAL REQUIREMENTS FOR OVER/UNDER VOLTAGE PROTECTION

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2014

    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 (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)

    Describes the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions.

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

    Development Note 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 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 61850-9-2:2011 Communication networks and systems for power utility automation - Part 9-2: Specific communication service mapping (SCSM) - Sampled values over ISO/IEC 8802-3
    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
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