• IEC TR 61912-1:2007

    Current The latest, up-to-date edition.

    LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - OVERCURRENT PROTECTIVE DEVICES - PART 1: APPLICATION OF SHORT-CIRCUIT RATINGS

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

    Language(s):  English - French

    Published date: 

    Publisher:  International Electrotechnical Committee

    Add To Cart

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

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Alphabetical list of definitions and characteristics
    4 Principle of application - Installation
    5 Characteristics - Low-voltage assemblies (switchboard,
      distribution board, etc.)
    6 Characteristics - Switching devices
      6.1 General
      6.2 Switching devices - Self-protection against short-circuit
      6.3 Switching devices - Application as SCPD
          6.3.1 Fuse-combination units and fuses as SCPD
          6.3.2 Circuit-breakers to IEC 60947-2 as SCPD
          6.3.3 Control and protective switching devices (CPS)
                according to IEC 60947-6-2 as SCPD
          6.3.4 Circuit-breakers according to IEC 60898-1 (MCBs)
                and residual current operated circuit-breaker with
                integral overcurrent protection (RCBOs) according
                to IEC 61009-1 as SCPD
    7 Examples of the practical application of the product
      characteristics
      7.1 General
      7.2 Protection of cables
      7.3 Short-circuit protection for LV assemblies
          7.3.1 Switchgear and controlgear assemblies
                (switchboard/motor-control centre (MCC))
          7.3.2 Busbar trunking systems (BTS)
      7.4 Short-circuit protection for contactors and starters
          7.4.1 General
          7.4.2 Protected switching device and protected starter
          7.4.3 Control and protective switching device (CPS)
                according to IEC 60947-6-2
      7.5 Short-circuit protection using circuit-breakers for
          household and similar installations according to
          IEC 60898-1 (usually known as MCBs) and residual
          current operated circuit-breakers with integral
          overcurrent protection (RCBOs) according to
          IEC 61009-1
    Annex A (informative) Interpolation of the suitability of an
            alternative SCPD for the protection of contactors and
            starters (substitution)
    Bibliography

    Abstract - (Show below) - (Hide below)

    Serves as an application guide for the short-circuit ratings given in IEC standards for low-voltage switchgear and controlgear and assemblies, summarises the definitions of the ratings and provides examples of their application.

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

    Committee TC 17
    Development Note Supersedes IEC TR 61912. (08/2007) Stability Date: 2015. (10/2012)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Current

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

    UNE-HD 50573.5.57:2014 Co-ordination of electrical equipment for protection, isolation, switching and control
    BS EN 60947-1 : 2007 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: GENERAL RULES
    I.S. HD 50573-5-57:2014 CO-ORDINATION OF ELECTRICAL EQUIPMENT FOR PROTECTION, ISOLATION, SWITCHING AND CONTROL
    PD IEC/TR 61912-2:2009 (published 2009-05) Low-voltage switchgear and controlgear. Over-current protective devices Selectivity under over-current conditions
    EN 61439-1 : 2011 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 1: GENERAL RULES (IEC 61439-1:2011)
    IEC TR 60269-5:2014 Low-voltage fuses - Part 5: Guidance for the application of low-voltage fuses
    IEC TR 61912-2:2009 Low-voltage switchgear and controlgear - Over-current protective devices - Part 2: Selectivity under over-current conditions
    I.S. EN 60947-1:2007 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: GENERAL RULES
    S.R. HD 60364-5-53:2015 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 5-53: SELECTION AND ERECTION OF ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR
    HD 50573-5-57 : 2014 CO-ORDINATION OF ELECTRICAL EQUIPMENT FOR PROTECTION, ISOLATION, SWITCHING AND CONTROL
    S.R. CLC/TR 60269-5:2011 LOW-VOLTAGE FUSES - PART 5: GUIDANCE FOR THE APPLICATION OF LOW-VOLTAGE FUSES
    I.S. EN 61439-1:2011 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 1: GENERAL RULES (IEC 61439-1:2011)
    IEC 60204-1:2016 Safety of machinery - Electrical equipment of machines - Part 1: General requirements
    UNE-EN 61439-1:2012 Low-voltage switchgear and controlgear assemblies - Part 1: General rules
    BS PD IEC TR 60269-5 : 2010 LOW-VOLTAGE FUSES - PART 5: GUIDANCE FOR THE APPLICATION OF LOW-VOLTAGE FUSES
    BS EN 61439-1:2011 (published 2011-11) Low-voltage switchgear and controlgear assemblies General rules
    IEC 61439-1:2011 Low-voltage switchgear and controlgear assemblies - Part 1: General rules
    09/30204029 DC : 0 BS EN 61439-1 - LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 1: GENERAL RULES
    IEC 60947-1:2007+AMD1:2010+AMD2:2014 CSV Low-voltage switchgear and controlgear - Part 1: General rules
    IEC 61439-1:2020 Low-voltage switchgear and controlgear assemblies - Part 1: General rules
    16/30301661 DC : 0 BS EN 61439-1 ED3.0 - LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 1: GENERAL RULES
    UNE-HD 60364-5-53:2016 Low-voltage electrical installations - Part 5-53: Selection and erection of electrical equipment - Switchgear and controlgear
    EN 60947-1:2007/A2:2014 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: GENERAL RULES (IEC 60947-1:2007/A2:2014)
    CLC/TR 60269-5 : 2011 Low-voltage fuses - Part 5: Guidance for the application of low-voltage fuses
    HD 60364-5-53:2015/A11:2017 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 5-53: SELECTION AND ERECTION OF ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR

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

    IEC 60947-6-2:2002+AMD1:2007 CSV Low-voltage switchgear and controlgear - Part 6-2: Multiple function equipment - Control and protective switching devices (or equipment) (CPS)
    IEC 60947-4-1:2009+AMD1:2012 CSV LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 4-1: CONTACTORS AND MOTOR-STARTERS - ELECTROMECHANICAL CONTACTORS AND MOTOR-STARTERS
    IEC 60439-2:2000+AMD1:2005 CSV Low-voltage switchgear and controlgear assemblies - Part 2: Particular requirements for busbar trunking systems (busways)
    IEC 60269-1:2006+AMD1:2009+AMD2:2014 CSV Low-voltage fuses - Part 1: General requirements
    IEC 61009-1:2010+AMD1:2012+AMD2:2013 CSV Residual current operated circuit-breakers with integral overcurrentprotection for household and similar uses (RCBOs) - Part 1: General rules
    IEC 60947-1:2007+AMD1:2010+AMD2:2014 CSV Low-voltage switchgear and controlgear - Part 1: General rules
    IEC 60439-1:1999+AMD1:2004 CSV LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 1: TYPE-TESTED AND PARTIALLY TYPE-TESTED ASSEMBLIES
    IEC 60898-1:2015 Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 1: Circuit-breakers for a.c. operation
    IEC 60947-3:2008+AMD1:2012+AMD2:2015 CSV Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
    IEC 60947-2:2016 Low-voltage switchgear and controlgear - Part 2: Circuit-breakers
    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective