• EN 60909-0:2016

    Current The latest, up-to-date edition.

    Short-circuit currents in three-phase a.c. systems - Part 0: Calculation of currents

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    Published date:  10-06-2016

    Publisher:  European Committee for Standards - Electrical

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

    FOREWORD
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols, subscripts and superscripts
    5 Characteristics of short-circuit currents: calculating
       method
    6 Short-circuit impedances of electrical equipment
    7 Calculation of initial short-circuit current
    8 Calculation of peak short-circuit current
    9 Calculation of symmetrical breaking current
    10 DC component of the short-circuit current
    11 Calculation of steady-state short-circuit current
    12 Short circuits at the low-voltage side of transformers,
       if one line conductor is interrupted at the high-voltage
       side
    13 Terminal short circuit of asynchronous motors
    14 Joule integral and thermal equivalent short-circuit
       current
    Annex A (normative) - Formulas for the calculation of the
            factors m and n
    Annex B (informative) - Nodal admittance and nodal
            impedance matrices
    Bibliography
    Annex ZA (normative) - Normative references to
             international publications with their
             corresponding European publications

    Abstract - (Show below) - (Hide below)

    IEC 60909-0:2016 is applicable to the calculation of short-circuit currents in low-voltage three-phase AC systems, and in high-voltage three-phase AC systems, operating at a nominal frequency of 50 Hz or 60 Hz. It establishes a general, practicable and concise procedure leading to results which are generally of acceptable accuracy and deals with the calculation of short-circuit currents in the case of balanced or unbalanced short circuits. This second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:- contribution of windpower station units to the short-circuit current;- contribution of power station units with ful size converters to the short-circuit current;- new document structure.

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

    Committee CLC/SR 73
    Development Note Supersedes HD 533. (11/2001)
    Document Type Standard
    Publisher European Committee for Standards - Electrical
    Status Current
    Supersedes

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

    PREN 50341-1 : DRAFT 2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    CEI EN 60027-7 : 2011 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 7: POWER GENERATION, TRANSMISSION AND DISTRIBUTION
    BS EN 60865-1 : 2012 SHORT-CIRCUIT CURRENTS - CALCULATION OF EFFECTS - PART 1: DEFINITIONS AND CALCULATION METHODS
    UNE-EN 50341-1:2017 Overhead electrical lines exceeding AC 1 kV - Part 1: General requirements - Common specifications
    12/30260570 DC : 0 BS EN 50341-1 - OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    BS EN 61914:2016 Cable cleats for electrical installations
    BS EN 60143-1:2015 Series capacitors for power systems General
    BS EN 62428 : 2008 ELECTRIC POWER ENGINEERING - MODAL COMPONENTS IN THREE-PHASE A.C. SYSTEMS - QUANTITIES AND TRANSFORMATIONS
    BS EN 60909-3 : 2010 SHORT-CIRCUIT CURRENTS IN THREE-PHASE A.C SYSTEMS - PART 3: CURRENTS DURING TWO SEPARATE SIMULTANEOUS LINE-TO-EARTH SHORT-CIRCUITS AND PARTIAL SHORT-CIRCUIT CURRENTS FLOWING THROUGH EARTH
    BS EN 61230 : 2008 LIVE WORKING - PORTABLE EQUIPMENT FOR EARTHING OR EARTHING AND SHORT-CIRCUITING
    UNE-EN 61914:2016 Cable cleats for electrical installations
    BS PD CLC/TR 50609 : 2014 TECHNICAL GUIDELINES FOR RADIAL HVDC NETWORKS
    BS EN 50368 : 2003 CABLE CLEATS FOR ELECTRICAL INSTALLATIONS
    BS EN 62271-201:2014 High-voltage switchgear and controlgear AC solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
    BS EN 60027-7 : 2010 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 7: POWER GENERATION, TRANSMISSION AND DISTRIBUTION
    CEI EN 60909-3 : 2011 SHORT-CIRCUIT CURRENTS IN THREE-PHASE A/C SYSTEMS - PART 3: CURRENTS DURING TWO SEPARATE SIMULTANEOUS LINE-TO-EARTH SHORTCIRCUITS AND PARTIAL SHORT-CIRCUIT CURRENTS FLOWING THROUGH EARTH
    08/30191664 DC : DRAFT OCT 2008 BS EN 50522 - EARTHING OF POWER INSTALLATIONS EXCEEDING 1 KV A.C.
    S.R. CLC/TR 50609:2014 TECHNICAL GUIDELINES FOR RADIAL HVDC NETWORKS
    KTA 3705 : 2013(R2017) SWITCHGEAR FACILITIES, TRANSFORMERS AND DISTRIBUTION NETWORKS FOR THE ELECTRICAL POWER SUPPLY OF THE SAFETY SYSTEM IN NUCLEAR POWER PLANTS
    BS EN 50343 : 2014 RAILWAY APPLICATIONS - ROLLING STOCK - RULES FOR INSTALLATION OF CABLING
    I.S. EN 61914:2016 CABLE CLEATS FOR ELECTRICAL INSTALLATIONS
    UNE-EN 60865-1:2013 Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods
    BS EN 62271-200:2012 High-voltage switchgear and controlgear AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
    I.S. HD 60364-5-54:2011 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 5-54: SELECTION AND ERECTION OF ELECTRICAL EQUIPMENT - EARTHING ARRANGEMENTS AND PROTECTIVE CONDUCTORS
    I.S. EN 60027-7:2010 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 7: POWER GENERATION, TRANSMISSION AND DISTRIBUTION
    CLC/TR 50609 : 2014 TECHNICAL GUIDELINES FOR RADIAL HVDC NETWORKS
    BS EN 50341-1 : 2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    I.S. EN 50368:2003 CABLE CLEATS FOR ELECTRICAL INSTALLATIONS
    CEI EN 50343 : 2015 RAILWAY APPLICATIONS - ROLLING STOCK - RULES FOR INSTALLATION OF CABLING
    I.S. EN 60909-3:2010 SHORT-CIRCUIT CURRENTS IN THREE-PHASE A.C SYSTEMS - PART 3: CURRENTS DURING TWO SEPARATE SIMULTANEOUS LINE-TO-EARTH SHORT-CIRCUITS AND PARTIAL SHORT-CIRCUIT CURRENTS FLOWING THROUGH EARTH
    I.S. EN 50341-1:2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    CEI EN 50341-1 : 2013 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    EN 62271-200:2012/AC:2015 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 200: AC METAL-ENCLOSED SWITCHGEAR AND CONTROLGEAR FOR RATED VOLTAGES ABOVE 1 KV AND UP TO AND INCLUDING 52 KV (IEC 62271-200:2011)
    EN 50341-1:2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    S.R. HD 60364-5-54:2011 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 5-54: SELECTION AND ERECTION OF ELECTRICAL EQUIPMENT - EARTHING ARRANGEMENTS AND PROTECTIVE CONDUCTORS
    I.S. EN 60865-1:2012 SHORT-CIRCUIT CURRENTS - CALCULATION OF EFFECTS - PART 1: DEFINITION AND CALCULATION METHODS (IEC 60865-1:2011 (EQV))
    CEI CLC/TR 50609 : 2014 TECHNICAL GUIDELINES FOR RADIAL HVDC NETWORKS
    I.S. EN 60519-1:2015 SAFETY IN INSTALLATIONS FOR ELECTROHEATING AND ELECTROMAGNETIC PROCESSING - PART 1: GENERAL REQUIREMENTS
    I.S. EN 50343:2014 RAILWAY APPLICATIONS - ROLLING STOCK - RULES FOR INSTALLATION OF CABLING
    EN 62477-1:2012/A1:2017 SAFETY REQUIREMENTS FOR POWER ELECTRONIC CONVERTER SYSTEMS AND EQUIPMENT - PART 1: GENERAL (IEC 62477-1:2012/A1:2016)
    BS EN 60519-1:2015 Safety in installations for electroheating and electromagnetic processing General requirements
    BS EN 62477-1 : 2012 SAFETY REQUIREMENTS FOR POWER ELECTRONIC CONVERTER SYSTEMS AND EQUIPMENT - PART 1: GENERAL (IEC 62477-1:2012)
    CEI EN 60519-1 : 2016 SAFETY IN INSTALLATIONS FOR ELECTROHEATING AND ELECTROMAGNETIC PROCESSING - PART 1: GENERAL REQUIREMENTS
    EN 62428 : 2008 ELECTRIC POWER ENGINEERING - MODAL COMPONENTS IN THREE-PHASE A.C. SYSTEMS - QUANTITIES AND TRANSFORMATIONS
    EN 62271-201 : 2014 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 201: AC SOLID-INSULATION ENCLOSED SWITCHGEAR AND CONTROLGEAR FOR RATED VOLTAGES ABOVE 1 KV AND UP TO AND INCLUDING 52 KV (IEC 62271-201:2014)
    EN 60519-1:2015 SAFETY IN INSTALLATIONS FOR ELECTROHEATING AND ELECTROMAGNETIC PROCESSING - PART 1: GENERAL REQUIREMENTS (IEC 60519-1:2015)
    EN 60143-1:2015/AC:2017-05 Series capacitors for power systems - Part 1: General
    EN 61230:2008 LIVE WORKING - PORTABLE EQUIPMENT FOR EARTHING OR EARTHING AND SHORT-CIRCUITING
    HD 60364-5-54:2011/A11:2017 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 5-54: SELECTION AND ERECTION OF ELECTRICAL EQUIPMENT - EARTHING ARRANGEMENTS AND PROTECTIVE CONDUCTORS
    EN 60865-1:2012 SHORT-CIRCUIT CURRENTS - CALCULATION OF EFFECTS - PART 1: DEFINITIONS AND CALCULATION METHODS (IEC 60865-1:2011)
    EN 61914:2016 CABLE CLEATS FOR ELECTRICAL INSTALLATIONS (IEC 61914:2015)
    EN 60027-7 : 2010 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 7: POWER GENERATION, TRANSMISSION AND DISTRIBUTION
    EN 50343 : 2014 AMD 1 2017 RAILWAY APPLICATIONS - ROLLING STOCK - RULES FOR INSTALLATION OF CABLING
    EN 60909-3:2010 SHORT-CIRCUIT CURRENTS IN THREE-PHASE A.C SYSTEMS - PART 3: CURRENTS DURING TWO SEPARATE SIMULTANEOUS LINE-TO-EARTH SHORT-CIRCUITS AND PARTIAL SHORT-CIRCUIT CURRENTS FLOWING THROUGH EARTH (IEC 60909-3:2009)

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

    IEC 60038:2009 IEC standard voltages
    IEC 60050-131:2002 International Electrotechnical Vocabulary (IEV) - Part 131: Circuit theory
    IEC 60986:2000+AMD1:2008 CSV Short-circuit temperature limits of electric cables with rated voltages from 6 kV (Um = 7,2 kV) up to 30 kV (Um = 36 kV)
    IEC 60050-195:1998 International Electrotechnical Vocabulary (IEV) - Part 195: Earthing and protection against electric shock
    EN 60909-3:2010 SHORT-CIRCUIT CURRENTS IN THREE-PHASE A.C SYSTEMS - PART 3: CURRENTS DURING TWO SEPARATE SIMULTANEOUS LINE-TO-EARTH SHORT-CIRCUITS AND PARTIAL SHORT-CIRCUIT CURRENTS FLOWING THROUGH EARTH (IEC 60909-3:2009)
    IEC TR 60909-1:2002 Short-circuit currents in three-phase a.c. systems - Part 1: Factors for the calculation of short-circuit currents according to IEC 60909-0
    IEC 60050-151:2001 International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and magnetic devices
    IEC 60909-3 : 3.0 SHORT-CIRCUIT CURRENTS IN THREE-PHASE AC SYSTEMS - PART 3: CURRENTS DURING TWO SEPARATE SIMULTANEOUS LINE-TO-EARTH SHORT CIRCUITS AND PARTIAL SHORT-CIRCUIT CURRENTS FLOWING THROUGH EARTH
    IEC 60949:1988 Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects
    IEC 60865-1:2011 Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods
    IEC TR 60909-4:2000 Short-circuit currents in three-phase a.c. systems - Part 4: Examples for the calculation of short-circuit currents
    EN 62428 : 2008 ELECTRIC POWER ENGINEERING - MODAL COMPONENTS IN THREE-PHASE A.C. SYSTEMS - QUANTITIES AND TRANSFORMATIONS
    EN 60865-1:2012 SHORT-CIRCUIT CURRENTS - CALCULATION OF EFFECTS - PART 1: DEFINITIONS AND CALCULATION METHODS (IEC 60865-1:2011)
    IEC 62428:2008 Electric power engineering - Modal components in three-phase a.c. systems - Quantities and transformations
    EN 60038 : 2011 CENELEC STANDARD VOLTAGES (IEC 60038:2009, MODIFIED)
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