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
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English - French
23-08-2007
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
This technical report, which 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. This edition cancels and replaces the first edition of IEC 61912, published in 2006, and corrigendum 1 (May 2006). The changes are only editorial.
DevelopmentNote |
Supersedes IEC TR 61912. (08/2007) Stability Date: 2015. (10/2012)
|
DocumentType |
Technical Report
|
Pages |
44
|
PublisherName |
International Electrotechnical Committee
|
Status |
Current
|
Standards | Relationship |
PD IEC/TR 61912-1:2007 | Identical |
VDE 0660-100 SUPP 1 : 2008 | Identical |
CEI 17-97/1 : 2008 | Identical |
NEN NPR IEC/TR 61912-1 : 2007 | Identical |
DIN EN 60947-1 SUPP 1 : 2008 | Identical |
UNE-HD 50573-5-57:2014 | Co-ordination of electrical equipment for protection, isolation, switching and control |
EN 61439-1:2011 | Low-voltage switchgear and controlgear assemblies - Part 1: General rules |
CLC/TR 60269-5:2011 | 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 |
EN 60947-1:2007/A2:2014 | LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: GENERAL RULES (IEC 60947-1:2007/A2:2014) |
I.S. HD 50573-5-57:2014 | CO-ORDINATION OF ELECTRICAL EQUIPMENT FOR PROTECTION, ISOLATION, SWITCHING AND CONTROL |
PD IEC/TR 61912-2:2009 | Low-voltage switchgear and controlgear. Over-current protective devices Selectivity under over-current conditions |
IEC TR 60269-5:2014 | 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-HD 60364-5-53:2016 | Low-voltage electrical installations - Part 5-53: Selection and erection of electrical equipment - Switchgear and controlgear |
BS 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 |
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 |
I.S. EN 60947-1:2007 | LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: GENERAL RULES |
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 |
UNE-EN 61439-1:2012 | Low-voltage switchgear and controlgear assemblies - Part 1: General rules |
PD IEC/TR 60269-5:2010 | Low-voltage fuses Guidance for the application of low-voltage fuses |
BS EN 61439-1:2011 | Low-voltage switchgear and controlgear assemblies General rules |
HD 60364-5-53:2015/A11:2017 | LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 5-53: SELECTION AND ERECTION OF ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR |
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 |
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