• IEC 60826:2017

    Current The latest, up-to-date edition.

    Design criteria of overhead transmission lines

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English

    Published date:  13-02-2017

    Publisher:  International Electrotechnical Committee

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

    FOREWORD
    1 Scope
    2 Normative references
    3 Terms, definitions, symbols and abbreviations
    4 General
    5 General design criteria
    6 Loadings
    7 Strength of components and limit states
    Annex A (informative) - Technical information - Strength
            of line components
    Annex B (informative) - Formulas of curves and
            figures
    Annex C (informative) - Atmospheric icing
    Annex D (informative) - Application of statistical
            distribution functions to load and strength of
            overhead lines
    Annex E (informative) - Effect of span variation on
            load-strength relationship - Calculation of span
            use factor
    Annex F (normative) - Conductor tension limits
    Annex G (informative) - Methods of calculation for
            wind speed up effects due to local topography
    Bibliography

    Abstract - (Show below) - (Hide below)

    NEW! IEC 60826:2017 is available as IEC 60826:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

    IEC 60826:2017: specifies the loading and strength requirements of overhead lines derived from reliability-based design principles. These requirements apply to lines 45 kV and above, but can also be applied to lines with a lower nominal voltage.
    This document also provides a framework for the preparation of national standards dealing with overhead transmission lines, using reliability concepts and employing probabilistic or semi-probabilistic methods. These national standards will need to establish the local climatic data for the use and application of this standard, in addition to other data that are country- specific.
    Although the design criteria in this standard apply to new lines, many concepts can be used to address the design and reliability requirements for refurbishment, upgrading and uprating of existing lines.
    This document does not cover the detailed design of line components such as supports, foundations, conductors or insulators strings.
    This fourth edition cancels and replaces the third edition published in 2003. It constitutes a technical revision.
    The main technical changes with regard to the previous edition are as follows:
    This standard has been further simplified by removing many informative annexes and theoretical details that can now be found in CIGRE Technical Brochure 178 and referred to as needed in the text of the standard. Many revisions have also been made that reflect the users experience in the application of this standard, together with information about amplification of wind speed due to escarpments. The annexes dealing with icing data have also been updated using new work by CIGRE.

    Key words: Overhead lines, Overhead transmission lines, reliability, energy

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

    Committee TC 11
    Development Note Supersedes IEC 60826-1, 2, 3, 4 (03/2001) Stability Date: 2019. (02/2017)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Current
    Supersedes

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

    CEI EN 61109 : 2009 INSULATORS FOR OVERHEAD LINES - COMPOSITE SUSPENSION AND TENSION INSULATORS FOR A/C/ SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1 000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    UNE-EN 50341-1:2017 Overhead electrical lines exceeding AC 1 kV - Part 1: General requirements - Common specifications
    BS EN 61109:2008 (published 2009-03) Insulators for overhead lines. Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1000 V. Definitions, test methods and acceptance criteria
    BS EN 50341-1 : 2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    HD 637 S1:1999/corrigendum:2005 POWER INSTALLATIONS EXCEEDING 1 KV A.C.
    EN 61284 : 1997 OVERHEAD LINES - REQUIREMENTS AND TESTS FOR FITTINGS
    EN 61773 : 1996 OVERHEAD LINES - TESTING OF FOUNDATIONS FOR STRUCTURES
    EN 50397-3:2010 Covered conductors for overhead lines and the related accessories for rated voltages above 1 kV a.c. and not exceeding 36 kV a.c. - Part 3: Guide to use
    BS EN 50397-2:2009 Covered conductors for overhead lines and the related accessories for rated voltages above 1 kV AC and not exceeding 36 kV AC Accessories for covered conductors. Tests and acceptance criteria
    BS EN 50397-3:2010 Covered conductors for overhead lines and the related accessories for rated voltages above 1 kV a.c. and not exceeding 36 kV a.c. Guide to use
    11/30215604 DC : 0 BS IEC 60913 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRIC TRACTION OVERHEAD CONTACT LINES
    BS EN 61467 : 2008 INSULATORS FOR OVERHEAD LINES - INSULATOR STRINGS AND SETS FOR LINES WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - AC POWER ARC TESTS
    BS EN 61773 : 1997 OVERHEAD LINES - TESTING OF FOUNDATIONS FOR STRUCTURES
    98/232755 DC : DRAFT DEC 1998 IEC 61936-1 - POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES
    08/30182118 DC : DRAFT OCT 2008 BS EN 50397-3 - COVERED CONDUCTORS FOR OVERHEAD LINES AND THE RELATED ACCESSORIES FOR RATED VOLTAGES ABOVE 1 KV A.C. AND NOT EXCEEDING 36 KV A.C. - PART 3: GUIDE TO USE
    CEI EN 61284 : 1999 OVERHEAD LINES - REQUIREMENTS AND TESTS FOR FITTINGS
    BS EN 62621 : 2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRIC TRACTION - SPECIFIC REQUIREMENTS FOR COMPOSITE INSULATORS USED FOR OVERHEAD CONTACT LINE SYSTEMS (IEC 62621:2011)
    CSA C22.3 No. 61936-1 : 2008 POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES
    NF EN 50397-2 : 2010 COVERED CONDUCTORS FOR OVERHEAD LINES AND THE RELATED ACCESSORIES FOR RATED VOLTAGES ABOVE 1 KV AC AND NOT EXCEEDING 36 KV AC - PART 2: ACCESSORIES FOR COVERED CONDUCTORS - TESTS AND ACCEPTANCE CRITERIA
    I.S. EN 50341-1:2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    CEI EN 50397-3 : 2011 COVERED CONDUCTORS FOR OVERHEAD LINES AND THE RELATED ACCESSORIES FOR RATED VOLTAGES ABOVE 1 KV A.C. AND NOT EXCEEDING 36 KV A.C. - PART 3: GUIDE TO USE
    EN 50341-1:2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    IEC 61936-1:2010+AMD1:2014 CSV Power installations exceeding 1 kV a.c. - Part 1: Common rules
    I.S. EN 50119:2009 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRIC TRACTION OVERHEAD CONTACT LINES
    DIN EN 61284 : 1998 OVERHEAD LINES - REQUIREMENTS AND TESTS FOR FITTINGS
    VDE 0210-20 : 1997 OVERHEAD LINES - TESTING OF FOUNDATIONS FOR STRUCTURES
    VDE 0212-1 : 1998 OVERHEAD LINES - REQUIREMENTS AND TESTS FOR FITTINGS
    DIN EN 61773 : 1997 OVERHEAD LINES - TESTING OF FOUNDATIONS FOR STRUCTURES
    08/30191891 DC : DRAFT OCT 2008 BS EN 61936-1 - POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES
    CEI EN 61467 : 2009 INSULATORS FOR OVERHEAD LINES - INSULATOR STRINGS AND SETS FOR LINES WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - AC POWER ARC TESTS
    CSA C22.3 No. 61936-1 : 2008 : R2015 POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES
    CEI EN 50341-1 : 2013 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    IEC 60913:2013 Railway applications - Fixed installations - Electric traction overhead contact lines
    NF EN 61284 : 2000 OVERHEAD LINES - REQUIREMENTS AND TESTS FOR FITTINGS
    EN 61936-1 : 2010 AMD 1 2014 POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES (IEC 61936-1:2010/A1:2014)
    IEC GUIDE 111:2004 Electrical high-voltage equipment in high-voltage substations - Common recommendations for product standards
    12/30260570 DC : 0 BS EN 50341-1 - OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    I.S. EN 61936-1:2010 POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES
    I.S. EN 61109:2008 INSULATORS FOR OVERHEAD LINES - COMPOSITE SUSPENSION AND TENSION INSULATORS FOR A.C. SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1 000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    I.S. EN 50397-3:2010 COVERED CONDUCTORS FOR OVERHEAD LINES AND THE RELATED ACCESSORIES FOR RATED VOLTAGES ABOVE 1 KV A.C. AND NOT EXCEEDING 36 KV A.C. - PART 3: GUIDE TO USE
    IEC 62621:2011 Railway applications - Fixed installations - Electric traction - Specific requirements for composite insulators used for overhead contact line systems
    I.S. EN 50119:2020 Railway applications - Fixed installations - Electric traction overhead contact lines
    UNE-EN 62621:2016 Railway applications - Fixed installations - Electric traction - Specific requirements for composite insulators used for overhead contact line systems
    IEC 61109:2008 Insulators for overhead lines - Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria
    IEC 61467:2008 Insulators for overhead lines - Insulator strings and sets for lines with a nominal voltage greater than 1 000 V - AC power arc tests
    BS EN 61936-1 : 2010 POWER INSTALLATIONS EXCEEDING 1 KV A.C - PART 1: COMMON RULES
    UNE-EN 61936-1:2012 Power installations exceeding 1 kV a.c. -- Part 1: Common rules
    EN 50119 : 2009 AMD 1 2013 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRIC TRACTION OVERHEAD CONTACT LINES
    PREN 50341-1 : DRAFT 2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    BS EN 50119 : 2009 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRIC TRACTION OVERHEAD CONTACT LINES
    CEI EN 50397-2 : 2011 COVERED CONDUCTORS FOR OVERHEAD LINES AND THE RELATED ACCESSORIES FOR RATED VOLTAGES ABOVE 1 KV AC AND NOT EXCEEDING 36 KV AC - PART 2: ACCESSORIES FOR COVERED CONDUCTORS - TESTS AND ACCEPTANCE CRITERIA
    BS EN 61284 : 1998 OVERHEAD LINES - REQUIREMENTS AND TESTS FOR FITTINGS
    I.S. EN 62621:2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRIC TRACTION - SPECIFIC REQUIREMENTS FOR COMPOSITE INSULATORS USED FOR OVERHEAD CONTACT LINE SYSTEMS
    I.S. EN 50397-2:2009 COVERED CONDUCTORS FOR OVERHEAD LINES AND THE RELATED ACCESSORIES FOR RATED VOLTAGES ABOVE 1 KV AC AND NOT EXCEEDING 36 KV AC - PART 2: ACCESSORIES FOR COVERED CONDUCTORS - TESTS AND ACCEPTANCE CRITERIA
    I.S. EN 61467:2008 INSULATORS FOR OVERHEAD LINES - INSULATOR STRINGS AND SETS FOR LINES WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - AC POWER ARC TESTS
    I.S. HD 637:1999 POWER INSTALLATIONS EXCEEDING 1 KV A.C.
    EN 61467 : 2008 INSULATORS FOR OVERHEAD LINES - INSULATOR STRINGS AND SETS FOR LINES WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - AC POWER ARC TESTS
    EN 62621:2016/A1:2016 RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRIC TRACTION - SPECIFIC REQUIREMENTS FOR COMPOSITE INSULATORS USED FOR OVERHEAD CONTACT LINE SYSTEMS
    EN 50397-2:2009 Covered conductors for overhead lines and the related accessories for rated voltages above 1 kV AC and not exceeding 36 kV AC - Part 2: Accessories for covered conductors - Tests and acceptance criteria
    EN 61109 : 2008 INSULATORS FOR OVERHEAD LINES - COMPOSITE SUSPENSION AND TENSION INSULATORS FOR A.C. SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
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