• IEC 60056:1987

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    High-voltage alternating-current circuit-breakers

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

    Superseded date:  01-05-2001

    Language(s): 

    Published date:  30-03-1987

    Publisher:  International Electrotechnical Committee

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

    Foreword
    Preface
    Chapter I: Service conditions, definitions, rating
               construction and design
    1 Scope
    2 Normal and special service conditions
    3 Definitions
    3.101 General terms
    3.102 Switching devices
    3.103 Parts of circuit-breakers
    3.104 Operation
    3.105 Characteristic quantities of circuit-breakers
    3.106 Index of definitions
    4 Rating
    4.1 Rated voltage
    4.2 Rated insulation level
    4.3 Rated frequency
    4.4 Rated normal current and temperature rise
    4.5 Rated short-time withstand current
    4.6 Rated peak withstand current
    4.7 Rated duration of short-circuit
    4.8 Rated supply voltage of closing and opening
            devices and auxiliary circuits
    4.9 Rated supply frequency of closing and opening
            devices and auxiliary circuits
    4.10 Rated pressures of compressed gas supply for
            operation and for interruption
    4.101 Rated short-circuit breaking current
    4.102 Rated transient recovery voltage for terminal
            faults
    4.103 Rated short-circuit making current
    4.104 Rated operating sequence
    4.105 Rated characteristics for short-line faults
    4.106 Rated out-of-phase breaking current
    4.107 Rated line-charging breaking current
    4.108 Rated cable-charging breaking current
    4.109 Rated single capacitor bank breaking current
    4.110 Rated back-to-back capacitor bank breaking
            current
    4.111 Rated capacitor bank inrush making current
    4.112 Rated small inductive breaking current
    4.113 Rated time quantities
    4.114 Co-ordination of rated values
    5 Design and construction
    5.1 Requirements for liquids in circuit-breakers
    5.2 Requirements for gases in circuit-breakers
    5.3 Earthing of circuit-breakers
    5.4 Auxiliary equipment
    5.5 Dependent power closing
    5.6 Stored energy closing
    5.7 Operation of releases
    5.8 Low and high pressure interlocking devices
    5.9 Nameplates
    5.101 Requirements for simultaneity of poles
    5.102 General requirement for operation
    5.103 Pressure limits of compressed gas for
            interruption in gas blast circuit-breakers
    5.104 Vent outlets
    Figures 1 to 14
    6 Type tests
    6.1 Dielectric tests
    6.2 Radio interference voltage (r.i.v.) tests
    6.3 Temperature-rise tests
    6.4 Measurement of the resistance of the main circuit
    6.5 Short-time withstand current and peak withstand
            current tests
    6.101 Mechanical and environmental tests
    6.102 Miscellaneous provisions for making and breaking
            tests
    6.103 Test ciruits for short circuit making and
            breaking tests
    6.104 Short-circuit test quantities
    6.105 Short-circuit test procedure
    6.106 Basic short-circuit test-duties
    6.107 Critical current tests
    6.108 Single-phase short-circuits tests
    6.109 Short-line fault tests
    6.110 Out-of-phase making and breaking tests
    6.111 Capacitive current switching tests
    6.112 Magnetizing and small inductive current
            switching tests
    7 Routine tests
    7.1 Power frequency voltage withstand dry tests
            on the main circuit
    7.2 Voltage withstand tests on control and auxiliary
            circuits
    7.3 Measurement of the resistance of the main circuit
    7.101 Mechanical operating tests
    7.102 Design and visual checks
    8 Guide to the selection of circuit-breakers for
            service
    8.101 General
    8.102 Selection of rated values for service conditions
    8.103 Selection of rated values for fault conditions
    9 Information to be given with enquiries, tenders
            and orders
    9.101 Information to be given with enquiries and orders
    9.102 Information to be given with tenders
    10 Rules for transport, storage, erection and
            maintenance
    10.1 Conditions during transport, storage and erection
    10.2 Erection
    10.3 Maintenance
    Figures 15 to 32
    Appendix AA - Calculation of transient recovery voltages
            for short-line faults from rated characteristics
    Appendix BB - Capacitor bank inrush currents
    Appendix CC - Records and reports of type tests for
            making, breaking and short-time current performance
    Appendix DD - Determination of short-circuit power factor
    Appendix EE - Tightness specifications and tests
    Appendix FF - Method of drawing the envelope of the
            prospective transient recovery voltage of a
            circuit and determining the representative
            parameters
    Appendix GG - Methods of determining prospective
            transient recovery voltage waves
    Appendix HH - Example of a commissioning test programme

    Abstract - (Show below) - (Hide below)

    Applies to a.c. circuit-breakers designed for indoor or outdoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1 000 V. Applies only to three-pole circuit-breakers for use in three-phase systems and single-pole circuit-breakers for use in single-phase systems. Two-pole circuit-breakers for use in single-phase systems are subject to agreement between manufacturer and user.Also applies to the operating devices of circuit-breakers and their auxiliary equipment. However, circuit-breakers with a closing mechanism for dependent manual operation are not covered since a rated short-circuit-making current cannot be specified, and dependent manual operation may be objectionable because of safety considerations.Does not cover circuit-breakers intended for use on motive power units of electrical traction equipment, or circuit-breakers for use with overhead lines which include series capacitors.Replaces IEC 60056-1 to 60056-6.

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

    Committee TC 17/SC 17A
    Development Note Supersedes IEC 60056-2, IEC 60056-3, IEC 60056-4, IEC 60056-4A IEC 60056-5 and IEC 60056-6. (07/2004)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By
    Supersedes

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

    BS EN 60694 : 1997 COMMON SPECIFICATION FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    EN 60071-2 : 1997 INSULATION CO-ORDINATION - APPLICATION GUIDE
    DIN 57660-105 : 1984 HIGH-VOLTAGE MOTOR STARTERS; PART 1: DIRECT-ON-LINE (FULL VOLTAGE) A.C. STARTERS
    CEI EN 60044-8 : 2004 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRASFORMERS
    ESI 41-10 : ISSUE 3 SWITCHGEAR FOR USE ON 66, 132, 275 AND 400kV SYSTEMS
    NF EN 61116 : 2003 ELECTROMECHANICAL EQUIPMENT GUIDE FOR SMALL HYDROELECTRIC INSTALLATIONS
    CEI 32-14 : 1998 HIGH-VOLTAGE FUSES - PART 2: EXPULSION FUSES
    IEEE C37.04 : 1999 IEEE STANDARD RATING STRUCTURE FOR AC HIGH-VOLTAGE CIRCUIT BREAKERS RATED ON A SYMMETRICAL CURRENT BASIS
    BS EN 60470 : 2001 HIGH-VOLTAGE ALTERNATING CURRENT CONTACTORS AND CONTACTOR-BASED MOTOR STARTERS
    BS EN 60265-1 : 1998 SPECIFICATION FOR HIGH-VOLTAGE SWITCHES - PART 1: SWITCHES FOR RATED VOLTAGES ABOVE 1 KV AND LESS THAN 52 KV
    BS EN 60044-6 : 1999 INSTRUMENT TRANSFORMERS - PART 6: REQUIREMENTS FOR PROTECTIVE CURRENT TRANSFORMERS FOR TRANSIENT PERFORMANCE
    BS PD IEC TR 62001 : 2009 HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS - GUIDEBOOK TO THE SPECIFICATION AND DESIGN EVALUATION OF A.C. FILTERS
    BS EN 60298 : 1996 A.C. METAL-ENCLOSED SWITCHGEAR AND CONTROLGEAR FOR RATED VOLTAGES ABOVE 1 KV AND UP TO AND INCLUDING 52 KV
    BS 5463-1(1991) : 1991 SPECIFICATION FOR HIGH-VOLTAGE SWITCHES - HIGH-VOLTAGE SWITCHES FOR RATED VOLTAGES ABOVE 1 kV AND LESS THAN 52 kV
    CEI EN 60265-1 : 2000 INTERRUPTEURS A HAUTE TENSION - PARTIE 1: INTERRUPTEURS POUR TENSIONS ASSIGNEES SUPERIEURES A 1 KV ET INFERIEURES A 52 KV
    94/712993 DC : DRAFT NOV 1994 PREN 45511 - GUIDE FOR PROCUREMENT - ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR
    DD IEC PAS 62543 : DRAFT 2008 DC TRANSMISSION USING VOLTAGE SOURCED CONVERTERS
    DIN 57660-103 : 1984 HIGH-VOLTAGE ALTERNATING CURRENT CONTACTORS
    02/201465 DC : DRAFT NOV 2002 IEC 60092-508 ED. 1 - ELECTRICAL INSTALLATIONS IN SHIPS - PART 508: SWITCHGEAR AND CONTROLGEAR ASSEMBLIES FOR RATED VOLTAGES ABOVE 1 KV AND UP TO AND INCLUDING 15 KV
    BS EN 60427 : 2001 SYNTHETIC TESTING OF HIGH VOLTAGE ALTERNATING CURRENT CIRCUIT BREAKERS
    DIN VDE 0660-105 : 1984 HIGH-VOLTAGE MOTOR STARTERS; PART 1: DIRECT-ON-LINE (FULL VOLTAGE) A.C. STARTERS
    CSA C71.1 : 1999 INSULATION CO-ORDINATION - PART 1: DEFINITIONS, PRINCIPLES AND RULES
    DIN VDE 0660-103 : 1984 HIGH-VOLTAGE ALTERNATING CURRENT CONTACTORS
    BS 5227(1992) : 1992 SPECIFICATION FOR a.c. METAL-ENCLOSED SWITCHGEAR AND CONTROLGEAR FOR RATED VOLTAGES ABOVE 1 kV AND UP TO AND INCLUDING 52 kV
    BS EN 61642 : 1998 INDUSTRIAL A.C. NETWORKS AFFECTED BY HARMONICS - APPLICATION OF FILTERS AND SHUNT CAPACITORS
    04/30112476 DC : DRAFT APR 2004
    00/201882 DC : DRAFT APR 2000 BS EN 60298 - A.C. METAL-ENCLOSED SWITCHGEAR AND CONTROLGEAR FOR RATED VOLTAGES ABOVE 1 KV AND UP TO AND INCLUDING 52 KV
    99/200375 DC : DRAFT MAR 1999 IEC 60420 - HIGH-VOLTAGE ALTERNATING CURRENT SWITCH-FUSE COMBINATIONS
    98/232755 DC : DRAFT DEC 1998 IEC 61936-1 - POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES
    BS 7441(1991) : AMD 7451 SPECIFICATION FOR SYNTHETIC TESTING OF HIGH VOLTAGE ALTERNATING CURRENT CIRCUIT BREAKERS
    DIN EN 60071-2 : 1997 INSULATION CO-ORDINATION - PART 2: APPLICATION GUIDE
    BS EN 60077-4 : 2003 RAILWAY APPLICATIONS - ELECTRIC EQUIPMENT FOR ROLLING STOCK - PART 4: ELECTROTECHNICAL COMPONENTS - RULES FOR AC CIRCUIT-BREAKERS
    CSA C71.2 : 1998 INSULATION COORDINATION - PART 2: APPLICATION GUIDE
    VDE 0111-2 : 1997 INSULATION CO-ORDINATION - PART 2: APPLICATION GUIDE
    CSA C60044-6:2007 INSTRUMENT TRANSFORMERS - PART 6: REQUIREMENTS FOR PROTECTIVE CURRENT TRANSFORMERS FOR TRANSIENT PERFORMANCE
    NF EN 60044-8 : 2006 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRANSDUCERS
    BIS IS/IEC 60071-2 : 1996(R2017) INSULATION CO-ORDINATION - PART 2: APPLICATION GUIDE
    CEI EN 61116 : 1996 ELECTROMECHANICAL EQUIPMENT GUIDE FOR SMALL HYDROELECTRIC INSTALLATIONS
    I.S. EN 60044-8:2002 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRANSFORMERS
    CSA C60044-6 : 2007 : R2011 INSTRUMENT TRANSFORMERS - PART 6: REQUIREMENTS FOR PROTECTIVE CURRENT TRANSFORMERS FOR TRANSIENT PERFORMANCE
    CSA C60044-8 :2007 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRANSFORMERS
    CSA C60044-8 : 2007 : R2011 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRANSFORMERS
    BS EN 60044-8:2002 Instrument transformers Electronic current transformers
    CSA C60044-8 : 2007 : R2016 INSTRUMENT TRANSFORMERS - PART 8: ELECTRONIC CURRENT TRANSFORMERS
    CEI EN 60071-2 : 1998 INSULATION CO-ORDINATION - PART 2: APPLICATION GUIDE
    I.S. EN 60694:1999 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    IEEE C37.10 : 2011 GUIDE FOR INVESTIGATION, ANALYSIS, AND REPORTING OF POWER CIRCUIT BREAKER FAILURES
    I.S. EN 60265-2:1994 HIGH-VOLTAGE SWITCHES - HIGH-VOLTAGE SWITCHES FOR RATED VOLTAGES OF 52 KV AND ABOVE
    I.S. EN 61642:1999 INDUSTRIAL A.C. NETWORKS AFFECTED BY HARMONICS - APPLICATION OF FILTERS AND SHUNT CAPACITORS
    BS EN 61264 : 1999 CERAMIC PRESSURIZED HOLLOW INSULATORS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR
    BS EN 60071-2:1997 (published 1997-04) Insulation co-ordination Application guide
    API 14F REDLINE : 2008 DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS
    API 14F:2008 DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS
    API 14F : 2008 : R2013 DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS
    I.S. EN 61116:1995 ELECTROMECHANICAL EQUIPMENT GUIDE FOR SMALL HYDROELECTRIC INSTALLATIONS
    IEC PAS 62543:2008 DC transmission using voltage sourced converters
    IEC 60420:1990 High-voltage alternating current switch-fuse combinations
    IEC TR 62001:2009 High-voltage direct current (HVDC) systems - Guidebook to the specification and design evaluation of A.C. filters
    IEEE 45-7 : 2012 RECOMMENDED PRACTICE FOR ELECTRICAL INSTALLATIONS ON SHIPBOARD - AC SWITCHBOARDS
    IEC 60044-6:1992 Instrument transformers - Part 6: Requirements for protective current transformers for transient performance
    IEC 61264:1998 Ceramic pressurized hollow insulators for high-voltage switchgear and controlgear
    IEC 61116:1992 Electromechanical equipment guide for small hydroelectric installations
    IEC 60044-8:2002 Instrument transformers - Part 8: Electronic current transformers
    IEC 60694:1996+AMD1:2000+AMD2:2001 CSV Common specifications for high-voltage switchgear and controlgear standards
    IEC 61166:1993 High-voltage alternating current circuit-breakers - Guide for seismic qualification of high-voltage alternating current circuit-breakers
    IEC 60077-4:2003 Railway applications - Electric equipment for rolling stock - Part 4: Electrotechnical components - Rules for AC circuit-breakers
    IEC 60427:2000 Synthetic testing of high-voltage alternating current circuit-breakers
    EN 60694:1996/A2:2001 COMMON SPECIFICATIONS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR STANDARDS
    EN 61642 : 1997 INDUSTRIAL A.C. NETWORKS AFFECTED BY HARMONICS - APPLICATION OF FILTERS AND SHUNT CAPACITORS
    EN 60298:1996/A11:1999 A.C. METAL-ENCLOSED SWITCHGEAR AND CONTROLGEAR FOR RATED VOLTAGES ABOVE 1 KV AND UP TO AND INCLUDING 52 KV
    EN 60265-2:1993/A2:1998 HIGH-VOLTAGE SWITCHES - HIGH-VOLTAGE SWITCHES FOR RATED VOLTAGES OF 52 KV AND ABOVE
    EN 60470:2000/corrigendum Jun. 2000 HIGH-VOLTAGE ALTERNATING CURRENT CONTACTORS AND CONTACTOR-BASED MOTOR STARTERS
    EN 60427:2000 REPORT ON SYNTHETIC TESTING OF HIGH VOLTAGE ALTERNATING CURRENT CIRCUIT BREAKERS
    EN 61264:1998/corrigendum:2000 CERAMIC PRESSURIZED HOLLOW INSULATORS FOR HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR
    EN 60044-8:2002 Instrument transformers - Part 8: Electronic current transformers
    EN 60265-1 : 1998 HIGH-VOLTAGE SWITCHES - SWITCHES FOR RATED VOLTAGES ABOVE 1 KV AND LESS THAN 52 KV
    EN 61116:1994 Electromechanical equipment guide for small hydroelectric installations

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

    IEC 60068-2-5:2010 Environmental testing - Part 2-5: Tests - Test Sa: Simulated solar radiation at ground level and guidance for solar radiation testing
    IEC 60050-151:2001 International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and magnetic devices
    IEC 60050-441:1984 International Electrotechnical Vocabulary (IEV) - Part 441: Switchgear, controlgear and fuses
    IEC 60427:2000 Synthetic testing of high-voltage alternating current circuit-breakers
    IEC 60077:1968 Rules for electric traction equipment
    IEC 60376:2005 Specification of technical grade sulfur hexafluoride (SF6) for use in electrical equipment
    IEC 60694:1996+AMD1:2000+AMD2:2001 CSV Common specifications for high-voltage switchgear and controlgear standards
    IEC 60296:2012 RLV Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear
    IEC 60129:1984 Alternating current disconnectors and earthing switches
    IEC 60068-2-17:1994 Basic environmental testing procedures - Part 2-17: Tests - Test Q: Sealing
    IEC 60071-2:1996 Insulation co-ordination - Part 2: Application guide
    IEC 60060-1:2010 High-voltage test techniques - Part 1: General definitions and test requirements
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