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  • IEC TR 62066:2002

    Current The latest, up-to-date edition.

    Surge overvoltages and surge protection in low-voltage a.c. power systems - General basic information

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

    Language(s):  English

    Published date:  24-06-2002

    Publisher:  International Electrotechnical Committee

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

    Foreword
    1 Scope
    2 Reference documents
    3 Definitions
    4 Overvoltages in low-voltage systems
    5 Lightning overvoltages
       5.1 General
       5.2 Origin of lightning surge overvoltages
       5.3 Lightning surges transferred from MV systems
       5.4 Surges caused by direct flash to LV lines
       5.5 Lightning surges induced into LV systems
       5.6 Examples of induced overvoltages
       5.7 Overvoltages caused by flashes to the structures
            or in close vicinity
       5.8 Recapitulation on lightning overvoltages
    6 Switching overvoltages
       6.1 General
       6.2 Operation of circuit-breakers and switches
       6.3 Operation of fuses
       6.4 Frequency of occurrence
       6.5 Interactions with surge-protective devices
       6.6 Recapitulation on switching overvoltages
    7 Temporary overvoltages
       7.1 General
       7.2 Magnitude of temporary overvoltages due to MV and
            LV faults
       7.3 Temporary overvoltages due to defects in the LV
            electrical installation
       7.4 Probability of occurrence and severity of harm
       7.5 Recapitulation on temporary overvoltage
    8 System interaction overvoltages
       8.1 General
       8.2 Interaction between power system and communications
            system
       8.3 Other interactions
       8.4 Recapitulation on system interactions
    9 Observations on surge overvoltages and failure rates
       9.1 General
       9.2 Using field failure data
       9.3 Recapitulation of observations on failure rates
    10 Considerations on system outage/equipment failure/fires
       10.1 General
       10.2 Avoiding interference in system operation
       10.3 Preventing permanent damage
       10.4 Costs of surge-related interruptions and failures
       10.5 Recapitulation on outages and failures
    11 Considerations on the use of surge protection
       11.1 General
       11.2 Power system configuration
       11.3 Types of installation
       11.4 Occurrence of surges
       11.5 SPD disconnector
       11.6 Risk assessment
       11.7 Recapitulation on the need for surge protection
    12 Surge protection application
       12.1 General
       12.2 Surge protective devices in power distribution systems
       12.3 Basic system characteristics for SPD selection
       12.4 Considerations for installation of SPDs
       12.5 Coordination among SPDs and with equipment to be
            protected
       12.6 Recapitulation on surge protection application
    Annex A (informative) Complementary information on
            lightning-related overvoltages
    Annex B (informative) Switching overvoltages
    Annex C (informative) Complementary information on temporary
            overvoltages
    Annex D (informative) Complementary information on system
            interaction overvoltages
    Annex E (informative) Complementary information on SPD
            application
    Annex F (informative) Avoiding overvoltages through good
            practice for earthing and cabling
    Bibliography
    Figures
    Tables

    Abstract - (Show below) - (Hide below)

    Presents a general overview on the different kinds of surge overvoltages that can occur on low-voltage installations. Typical surge magnitude and duration as well as frequency of occurrence are described. Information on overvoltages resulting from interactions between power system and communications system is also provided. Additionally, general guidelines are given concerning surge protection means and systems on the basis of availability and risk considerations, including interactions and the need for coordination and consideration of temporary overvoltages in the selection of surge-protective devices.

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

    Development Note Stability Date: 2016. (10/2012)
    Document Type Technical Report
    Publisher International Electrotechnical Committee
    Status Current

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

    14/30316036 DC : 0 BS EN 61643-32 - LOW-VOLTAGE SURGE PROTECTIVE DEVICES - SURGE PROTECTIVE DEVICES FOR SPECIFIC USE INCLUDING D.C. - PART 32: SELECTION AND APPLICATION PRINCIPLES - SPDS CONNECTED TO PHOTOVOLTAIC INSTALLATIONS
    IEC 61643-12:2008 Low-voltage surge protective devices - Part 12: Surge protective devices connected to low-voltage power distribution systems - Selection and application principles
    IEC TR 60664-2-2:2002 Insulation coordination for equipment within low-voltage systems - Part 2-2: Interface considerations - Application guide
    IEC TR 61000-5-6:2002 Electromagnetic compatibility (EMC) - Part 5-6: Installation and mitigation guidelines - Mitigation of external EM influences
    PD IEC TR 61000-5-6:2002 Electromagnetic compatibility (EMC). Installation and mitigation guidelines Mitigation of external EM influences
    DD IEC TS 62257-5 : DRAFT 2005 RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION - PART 5: PROTECTION AGAINST ELECTRICAL HAZARDS
    IEC TR 61000-2-14:2006 Electromagnetic compatibility (EMC) - Part 2-14: Environment - Overvoltages on public electricity distribution networks
    IEEE C62.36-2014 TEST METHODS FOR SURGE PROTECTORS AND PROTECTIVE CIRCUITS USED IN INFORMATION AND COMMUNICATIONS TECHNOLOGY (ICT) CIRCUITS, AND SMART GRID DATA CIRCUITS
    VDI 3551:2011-01 ELECTROMAGNETIC COMPATIBILITY (EMC) IN BUILDING SERVICES
    03/305095 DC : DRAFT MAR 2003 IEC 62305-4 - PROTECTION AGAINST LIGHTNING - PART 4: ELECTRICAL AND ELECTRONIC SYSTEMS WITHIN STRUCTURES
    I.S. EN 62305-2:2012 PROTECTION AGAINST LIGHTNING - PART 2: RISK MANAGEMENT (IEC 62305-2:2010 (MOD))
    S.R. CLC/TS 61643-12:2009 LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 12: SURGE PROTECTIVE DEVICES CONNECTED TO LOW-VOLTAGE POWER DISTRIBUTION SYSTEMS - SELECTION AND APPLICATION PRINCIPLES
    IEC 62305-2:2010 Protection against lightning - Part 2: Risk management
    DD CLC/TS 61643-12:2009 Low-voltage surge protective devices Surge protective devices connected to low-voltage power distribution systems. Selection and application principles
    UNE-EN 50160:2011 Voltage characteristics of electricity supplied by public electricity networks
    04/30116083 DC : DRAFT JUL 2004 IEC 62305-5 - PROTECTION AGAINST LIGHTNING - PART 5: SERVICES
    08/30180966 DC : DRAFT APR 2008 BS EN 50160 - VOLTAGE CHARACTERISTICS OF ELECTRICITY SUPPLIED BY PUBLIC DISTRIBUTION NETWORKS
    CEI EN 62305-2 : 2013 PROTECTION AGAINST LIGHTNING - PART 2: RISK MANAGEMENT
    I.S. EN 50160:2010 VOLTAGE CHARACTERISTICS OF ELECTRICITY SUPPLIED BY PUBLIC ELECTRICITY NETWORKS
    IEEE C62.42.0 : 2016 APPLICATION OF SURGE-PROTECTIVE COMPONENTS IN SURGE-PROTECTIVE DEVICES AND EQUIPMENT PORTS - OVERVIEW
    IEC TS 62257-5:2015 Recommendations for renewable energy and hybrid systems for rural electrification - Part 5: Protection against electrical hazards
    UNE-CLC/TS 61643-12:2012 Low-voltage surge protective devices -- Part 12: Surge protective devices connected to low-voltage power distribution systems - Selection and application principles
    IEC 61643-32:2017 Low-voltage surge protective devices - Part 32: Surge protective devices connected to the d.c. side of photovoltaic installations - Selection and application principles
    BS EN 62305-2:2012 Protection against lightning Risk management
    09/30190333 DC : 0 BS EN 61400-24 - WIND TURBINES - PART 24: LIGHTNING PROTECTION
    BS EN 50160 : 2010 VOLTAGE CHARACTERISTICS OF ELECTRICITY SUPPLIED BY PUBLIC ELECTRICITY NETWORKS
    EN 50160 : 2010 AMD 1 2015 VOLTAGE CHARACTERISTICS OF ELECTRICITY SUPPLIED BY PUBLIC ELECTRICITY NETWORKS
    PD IEC/TS 62257-5:2015 (published 2016-01) Recommendations for renewable energy and hybrid systems for rural electrification Protection against electrical hazards
    EN 62305-2:2012 Protection against lightning - Part 2: Risk management
    CLC/TS 61643-12 : 2009 LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 12: SURGE PROTECTIVE DEVICES CONNECTED TO LOW-VOLTAGE POWER DISTRIBUTION SYSTEMS - SELECTION AND APPLICATION PRINCIPLES

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

    IEC 61024-1:1990 Protection of structures against lightning - Part 1: General principles
    IEC 61000-4-4 : 3.0EN+(REDLINE+VERSION) ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-4: TESTING AND MEASUREMENT TECHNIQUES - ELECTRICAL FAST TRANSIENT/BURST IMMUNITY TEST
    IEC 61000-4-1:2006 Electromagnetic compatibility (EMC) - Part 4-1: Testing and measurement techniques - Overview of IEC 61000-4 series
    IEC 61643-12:2008 Low-voltage surge protective devices - Part 12: Surge protective devices connected to low-voltage power distribution systems - Selection and application principles
    IEC 60364-5-53:2001+AMD1:2002+AMD2:2015 CSV Electrical installations of buildings - Part 5-53: Selection and erection of electrical equipment - Isolation, switching and control
    IEC 61663-2:2001 Lightning protection - Telecommunication lines - Part 2: Lines using metallic conductors
    IEC 61000-4-4:2012 RLV Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test
    IEC TR 61000-5-2:1997 Electromagnetic compatibility (EMC) - Part 5: Installation and mitigation guidelines - Section 2: Earthing and cabling
    IEEE 1036 : 2010 GUIDE FOR APPLICATION OF SHUNT POWER CAPACITORS
    IEC 61643-1:2005 Low-voltage surge protective devices - Part 1: Surge protective devices connected to low-voltage power distribution systems - Requirements and tests
    IEC 60364-4-44:2007+AMD1:2015 CSV Low-voltage electrical installations - Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances
    IEC 61312-1:1995 Protection against lightning electromagnetic impulse - Part 1: General principles
    IEC 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
    IEC TS 61312-3:2000 Protection against lightning electromagnetic impulse - Part 3: Requirements of surge protective devices (SPDs)
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