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    I.S. EN 50341-2-20:2015

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    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    OVERHEAD ELECTRICAL LINES EXCEEDING AC 45 KV - PART 2-20: NATIONAL NORMATIVE ASPECTS (NNA) FOR ESTONIA (BASED ON EN 50341-1:2012)

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  26-11-2021

    Language(s):  English

    Published date:  01-01-2015

    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)

    0 Introduction
    1 Scope
    2 Normative references, definitions and symbols
    3 Basis of design
    4 Actions on lines
    5 Electrical requirements
    6 Earthing systems
    7 Supports
    8 Foundations
    9 Conductors and earth-wires
    10 Insulators
    11 Hardware
    12 Quality assurance, checks and taking-over
    Annex B (informative) - Conversion of wind
            velocities and ice loads
    Annex C (informative) - Application examples of wind
            loads - Special forces
    Annex E (normative) - Theoretical method for calculating
            minimum air clearances
    Annex F (informative) - Empirical method for calculating
            mid span clearances
    Annex G (normative) - Calculation methods for earthing
            systems
    Annex H (informative) - Installation and measurements
            of earthing systems
    Annex M (informative) - Geotechnical and structural
            design of foundations

    Abstract - (Show below) - (Hide below)

    Pertains to all new overhead electric lines with nominal system voltages exceeding AC 1 kV and with rated frequencies below 100 Hz.

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

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Withdrawn
    Superseded By

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

    EN 14229:2010 Structural timber - Wood poles for overhead lines
    EN 60071-1:2006/A1:2010 INSULATION CO-ORDINATION - PART 1: DEFINITIONS, PRINCIPLES AND RULES
    EN 60071-2:1997 Insulation co-ordination - Part 2: Application guide
    EN 1997-1:2004/A1:2013 EUROCODE 7: GEOTECHNICAL DESIGN - PART 1: GENERAL RULES
    EN 50522:2010 Earthing of power installations exceeding 1 kV a.c.
    EN 1991-1-4:2005/A1:2010 EUROCODE 1: ACTIONS ON STRUCTURES - PART 1-4: GENERAL ACTIONS - WIND ACTIONS
    EN 61773:1996 Overhead lines - Testing of foundations for structures
    EN 61284:1997 Overhead lines - Requirements and tests for fittings
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