• EN 50522 : 2010

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    EARTHING OF POWER INSTALLATIONS EXCEEDING 1 KV A.C.

    Available format(s): 

    Superseded date:  14-03-2022

    Language(s): 

    Published date:  05-11-2010

    Publisher:  European Committee for Standards - Electrical

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

    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Fundamental requirements
    5 Design of earthing systems
    6 Measures to avoid transferred potential
    7 Construction of earthing systems
    8 Measurements
    9 Maintainability
    Annex A (normative) - Method of calculating permissible touch
            voltages
    Annex B (normative) - Touch voltage and body current
    Annex C (normative) - Type and minimum dimensions of earth
            electrode materials ensuring mechanical strength and
            corrosion resistance
    Annex D (normative) - Current rating calculation of earthing
            conductors and earth electrodes
    Annex E (normative) - Description of the recognized specified
            measures M
    Annex F (normative) - Measures on earthing systems to reduce the
            effects of high frequency interference
    Annex G (normative) - Detailed measures for earthing of equipment
            and installations
    Annex H (normative) - Measuring touch voltages
    Annex I (informative) - Reduction factors related to earth wires
            of overhead lines and metal sheaths of underground cables
    Annex J (informative) - Basis for the design of earthing systems
    Annex K (informative) - Installing the earth electrodes and
            earthing conductors
    Annex L (informative) - Measurements for and on earthing systems
    Annex M (normative) - Details on site inspection and documentation
            of earthing systems
    Annex N (informative) - The use of reinforcing bars in concrete
            for earthing purpose
    Annex O (informative) - Global Earthing System
    Annex P (normative) - Special national conditions
    Annex Q (informative) - A-deviations

    Abstract - (Show below) - (Hide below)

    This European Standard is applicable to specify the requirements for the design and erection of earthing systems of electrical installations, in systems with nominal voltage above 1 kV a.c. and nominal frequency up to and including 60 Hz, so as to provide safety and proper functioning for the use intended.

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

    Committee TC 99X
    Development Note Together with EN 61936-1 supersedes HD 637. (12/2010)
    Document Type Standard
    Publisher European Committee for Standards - Electrical
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    UNE-EN 50341-1:2017 Overhead electrical lines exceeding AC 1 kV - Part 1: General requirements - Common specifications
    14/30247711 DC : 0 BS EN 50633 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PROTECTION PRINCIPLES FOR AC AND DC ELECTRIC TRACTION SYSTEMS
    I.S. EN 50110-1:2013 OPERATION OF ELECTRICAL INSTALLATIONS - PART 1: GENERAL REQUIREMENTS
    BS EN 50341-1:2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    EN 50216-4:2015 POWER TRANSFORMER AND REACTOR FITTINGS - PART 4: BASIC ACCESSORIES (EARTHING TERMINAL, DRAIN AND FILLING DEVICES, THERMOMETER POCKET, WHEEL ASSEMBLY)
    EN 50341-2-19 : 2015 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-19: NATIONAL NORMATIVE ASPECTS (NNA) FOR CZECH REPUBLIC (BASED ON EN 50341-1:2012)
    UNE-EN 50633:2017 Railway applications - Fixed installations - Protection principles for AC and DC electric traction systems
    EN 50341-2-20 : 2015 OVERHEAD ELECTRICAL LINES EXCEEDING AC 45 KV - PART 2-20: NATIONAL NORMATIVE ASPECTS (NNA) FOR ESTONIA (BASED ON EN 50341-1:2012)
    EN 50341-1:2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    ISO 19859:2016 Gas turbine applications Requirements for power generation
    KTA 3403 : 2015(R2017) CABLE PENETRATIONS THROUGH THE REACTOR CONTAINMENT VESSEL OF NUCLEAR POWER PLANTS
    CEI EN 50110-1 : 2014 OPERATION OF ELECTRICAL INSTALLATIONS - PART 1: GENERAL REQUIREMENTS
    BS EN 50110-1:2013 Operation of electrical installations General requirements
    BS EN 50341-2-20:2015 OVERHEAD ELECTRICAL LINES EXCEEDING AC 45 KV - PART 2-20: NATIONAL NORMATIVE ASPECTS (NNA) FOR ESTONIA (BASED ON EN 50341-1:2012)
    BS EN 50633:2016 Railway applications. Fixed installations. Protection principles for AC and DC electric traction systems
    I.S. EN 50216-4:2015 POWER TRANSFORMER AND REACTOR FITTINGS - PART 4: BASIC ACCESSORIES (EARTHING TERMINAL, DRAIN AND FILLING DEVICES, THERMOMETER POCKET, WHEEL ASSEMBLY)
    CEI EN 50341-2-23 : 1ED 2017 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-23: NATIONAL NORMATIVE ASPECTS (NNA) FOR SLOVAKIA (BASED ON EN 50341-1:2012)
    CEI EN 50341-1 : 2013 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    BS EN 50341-2-19:2015 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-19: NATIONAL NORMATIVE ASPECTS (NNA) FOR CZECH REPUBLIC
    I.S. EN 50341-2-20:2015 OVERHEAD ELECTRICAL LINES EXCEEDING AC 45 KV - PART 2-20: NATIONAL NORMATIVE ASPECTS (NNA) FOR ESTONIA (BASED ON EN 50341-1:2012)
    EN 50341-2-23 : 2016 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-23: NATIONAL NORMATIVE ASPECTS (NNA) FOR SLOVAKIA (BASED ON EN 50341-1:2012)
    12/30260570 DC : 0 BS EN 50341-1 - OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    UNE-EN 50110-1:2014 Operation of electrical installations - Part 1: General requirements
    I.S. EN 50341-2-19:2015 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-19: NATIONAL NORMATIVE ASPECTS (NNA) FOR CZECH REPUBLIC (BASED ON EN 50341-1:2012)
    I.S. EN 50341-2-23:2016 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-23: NATIONAL NORMATIVE ASPECTS (NNA) FOR SLOVAKIA (BASED ON EN 50341-1:2012)
    BS ISO 19859:2016 GAS TURBINE APPLICATIONS - REQUIREMENTS FOR POWER GENERATION
    PREN 50341-1 : DRAFT 2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    BS EN 50216-4:2015 POWER TRANSFORMER AND REACTOR FITTINGS - PART 4: BASIC ACCESSORIES (EARTHING TERMINAL, DRAIN AND FILLING DEVICES, THERMOMETER POCKET, WHEEL ASSEMBLY)
    BS EN 50341-2-23:2016 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-23: NATIONAL NORMATIVE ASPECTS (NNA) FOR SLOVAKIA (BASED ON EN 50341-1:2012)
    PREN 50633 : DRAFT 2014 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PROTECTION PRINCIPLES FOR AC AND DC ELECTRIC TRACTION SYSTEMS
    I.S. EN 50341-1:2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    UNE-EN 50216-4:2015 Power transformer and reactor fittings - Part 4: Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly)
    14/30244780 DC : 0 BS ISO 19859 - GAS TURBINE APPLICATIONS - REQUIREMENTS FOR POWER GENERATION
    EN 50633 : 2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - PROTECTION PRINCIPLES FOR AC AND DC ELECTRIC TRACTION SYSTEMS
    EN 50110-1:2013 OPERATION OF ELECTRICAL INSTALLATIONS - PART 1: GENERAL REQUIREMENTS
    HD 60364-4-442 : 2012 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 4-442: PROTECTION FOR SAFETY - PROTECTION OF LOW-VOLTAGE INSTALLATIONS AGAINST TEMPORARY OVERVOLTAGES DUE TO EARTH FAULTS IN THE HIGH-VOLTAGE SYSTEM AND DUE TO FAULTS IN THE LOW VOLTAGE SYSTEM (IEC 60364-4-44:2007 (CLAUSE 442), MODIFIED)

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

    IEC TS 60479-1:2005+AMD1:2016 CSV Effects of current on human beings and livestock - Part 1: Generalaspects
    IEC 60050-195:1998 International Electrotechnical Vocabulary (IEV) - Part 195: Earthing and protection against electric shock
    IEC 60364-4-41:2005+AMD1:2017 CSV Low voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock
    IEC 60050-605:1983 International Electrotechnical Vocabulary (IEV) - Part 605: Generation, transmission and distribution of electricity - Substations
    IEC 60050-601:1985 International Electrotechnical Vocabulary (IEV) - Part 601: Generation, transmission and distribution of electricity - General
    IEC 60050-151:2001 International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and magnetic devices
    HD 60364-4-41:2017/A11:2017 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 4-41: PROTECTION FOR SAFETY - PROTECTION AGAINST ELECTRIC SHOCK
    IEC 60949:1988 Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects
    IEC TR 61000-5-2:1997 Electromagnetic compatibility (EMC) - Part 5: Installation and mitigation guidelines - Section 2: Earthing and cabling
    IEC 60364-1:2005 Low-voltage electrical installations - Part 1: Fundamental principles, assessment of general characteristics, definitions
    HD 60364-1:2008/A11:2017 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 1: FUNDAMENTAL PRINCIPLES, ASSESSMENT OF GENERAL CHARACTERISTICS, DEFINITIONS
    IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
    IEC 60287-3-1:2017 Electric cables - Calculation of the current rating - Part 3-1: Operating conditions - Site reference conditions
    IEC 60050-826:2004 International Electrotechnical Vocabulary (IEV) - Part 826: Electrical installations
    EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
    IEC 60050-602:1983 International Electrotechnical Vocabulary (IEV) - Part 602: Generation, transmission and distribution of electricity - Generation
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