IEC 60949:1988
Current
Current
The latest, up-to-date edition.
Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects
Amended by
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Published date
25-11-1988
Publisher
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FOREWORD
PREFACE
INTRODUCTION
Clause
1 List of symbols
2 Permissible short-circuit current
3 Calculation of adiabatic short-circuit current
4 Calculation of short-circuit temperature
5 Calculation of non-adiabatic factor for conductors
and spaced wire screens
6 Calculation of non-adiabatic factor for sheaths,
screens and wires
FIGURE
APPENDIX A - Explanation of recommended methods for
taking into account non-adiabatic heating
effect when calculating permissible
short-circuit currents
The approach set out in this standard is to: a) calculate the adiabatic short-circuit current, b) calculate a modifying factor that takes account of the non-adiabatic heating effect, c) multiply a) and b) to obtain permissible short-circuit current.
| DevelopmentNote |
Also numbered as BS 7454(1991). (10/2005) Stability Date: 2017. (09/2017)
|
| DocumentType |
Standard
|
| Pages |
30
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Standards | Relationship |
| GOST R IEC 60949 : 2009 | Identical |
| NEN 10949 : 1989 | Identical |
| UNE 21192:1992 | Identical |
| BS EN 45510-2-8:2004 | Guide for procurement of power station equipment Electrical equipment - Power cables |
| CEI UNI EN 45510-2-8 : 2006 | GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-8: ELECTRICAL EQUIPMENT - POWER CABLES |
| DIN EN 45510-2-7:2003-12 | GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-7: ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR |
| I.S. EN 50522:2010 | EARTHING OF POWER INSTALLATIONS EXCEEDING 1 KV A.C. |
| IEC 60724:2000+AMD1:2008 CSV | Short-circuit temperature limits of electric cables with rated voltages of 1 kV (<em>U</em><sub>m</sub> = 1,2 kV) and 3 kV (<em>U</em><sub>m</sub> = 3,6 kV) |
| BS EN 50522:2010 | Earthing of power installations exceeding 1 kV a.c. |
| BS EN 62477-1 : 2012 | SAFETY REQUIREMENTS FOR POWER ELECTRONIC CONVERTER SYSTEMS AND EQUIPMENT - PART 1: GENERAL (IEC 62477-1:2012) |
| HD 620 : 2010 | DISTRIBUTION CABLES WITH EXTRUDED INSULATION FOR RATED VOLTAGES FROM 3,6/6 (7,2) KV UP TO AND INCLUDING 20,8/36 (42) KV |
| EN 60909-0:2016 | Short-circuit currents in three-phase a.c. systems - Part 0: Calculation of currents |
| HD 637 S1:1999/corrigendum:2005 | POWER INSTALLATIONS EXCEEDING 1 KV A.C. |
| EN 45510-2-8 : 2004 | GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-8: ELECTRICAL EQUIPMENT - POWER CABLES |
| EN 50483-5:2009 | Test requirements for low voltage aerial bundled cable accessories - Part 5: Electrical ageing test |
| 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 |
| 08/30190022 DC : DRAFT SEP 2008 | BS EN 60865-1 - SHORT-CIRCUIT CURRENTS - CALCULATION OF EFFECTS - PART 1: DEFINITIONS AND CALCULATION METHODS |
| NFC 33 252 : 2002 | TESTS FOR POWER CABLES WITH EXTRUDED INSULATION FOR RATED VOLTAGES ABOVE 30kV (Um=36kV) UP TO 150 kV (Um=170kV) |
| BS EN 45510-2-7:2002 | Guide for the procurement of power station equipment. Electrical equipment Switchgear and controlgear |
| 11/30249994 DC : DRAFT JULY 2011 | BS 7430 - CODE OF PRACTICE FOR PROTECTIVE EARTHING OF ELECTRICAL INSTALLATIONS |
| CEI UNI EN 45510-2-7 : 2006 | GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-7: ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR |
| 98/232755 DC : DRAFT DEC 1998 | IEC 61936-1 - POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES |
| 12/30270636 DC : 0 | BS EN 60909-0 - SHORT-CIRCUIT CURRENTS IN THREE-PHASE A.C. SYSTEMS - PART 0: CALCULATION OF CURRENTS |
| I.S. EN 62477-1:2012 | SAFETY REQUIREMENTS FOR POWER ELECTRONIC CONVERTER SYSTEMS AND EQUIPMENT - PART 1: GENERAL |
| CSA C22.3 No. 61936-1 : 2008 | POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES |
| CSA C22.3 No. 61936-1 : 2008 : R2015 | POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES |
| NFC 33 253 : 2006 | INSULATED CABLES FOR POWER SYSTEMS - SINGLE-CORE CABLES WITH POLYMERIC INSULATION FOR RATED VOLTAGES ABOVE 150 KV (UM = 170 KV) UP TO 500 KV (UM = 525 KV) |
| IEC 61443:1999+AMD1:2008 CSV | Short-circuit temperature limits of electric cables with rated voltages above 30 kV (<em>U</em><sub>m</sub> = 36 kV) |
| IEC 61936-1:2010+AMD1:2014 CSV | Power installations exceeding 1 kV a.c. - Part 1: Common rules |
| CEI EN 50522 : 2011 | EARTHING OF POWER INSTALLATIONS EXCEEDING 1 KV A.C. |
| CEI EN 50483-5 : 2011 | TEST REQUIREMENTS FOR LOW VOLTAGE AERIAL BUNDLED CABLE ACCESSORIES - PART 5: ELECTRICAL AGEING TEST |
| BS EN 60865-1:2012 | Short-circuit currents. Calculation of effects Definitions and calculation methods |
| BS EN 61238-1:2003 | Compression and mechanical connectors for power cables for rated voltages up to 36 kV (<i>U</i><sub>m</sub> = 42 kV) Test methods and requirements |
| BS 7726-1(1994) : 1994 AMD 8218 | SHORT-CIRCUIT CURRENTS - CALCULATION OF EFFECTS - DEFINITIONS AND CALCULATION METHODS |
| 08/30191664 DC : DRAFT OCT 2008 | BS EN 50522 - EARTHING OF POWER INSTALLATIONS EXCEEDING 1 KV A.C. |
| 08/30191891 DC : DRAFT OCT 2008 | BS EN 61936-1 - POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES |
| I.S. EN 45510-2-7:2002 | GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-7: ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR |
| NF EN 50522 : 2012 | EARTHING OF POWER INSTALLATIONS EXCEEDING 1 KV A.C. |
| VDE 0103-10 : 1998 COR 1 2004 | SHORT-CIRCUIT CURRENTS - SHORT-CIRCUIT CURRENTS IN D.C. AUXILIARY INSTALLATIONS IN POWER PLANTS AND SUBSTATIONS - PART 2: CALCULATION OF EFFECTS |
| CEI EN 61660-2 : 1999 | SHORT-CIRCUIT CURRENTS IN D.C. AUXILIARY INSTALLATIONS IN POWER PLANTS AND SUBSTATIONS - PART 2: CALCULATION OF EFFECTS |
| EN 61936-1 : 2010 AMD 1 2014 | POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES (IEC 61936-1:2010/A1:2014) |
| IEC 61238-1:2003 | Compression and mechanical connectors for power cables for rated voltages up to 30 kV (Um = 36 kV) - Part 1: Test methods and requirements |
| IEEE 45.8-2016 | IEEE Recommended Practice for Electrical Installations on Shipboard--Cable Systems |
| IEC 61660-2:1997 | Short-circuit currents in d.c. auxiliary installations in power plants and substations - Part 2: Calculation of effects |
| EN 45510-2-8:2004 | Guide for procurement of power station equipment - Part 2-8: Electrical equipment - Power cables |
| I.S. EN 61660-2:1999 | SHORT-CIRCUIT CURRENTS IN D.C. AUXILIARY INSTALLATIONS IN POWER PLANTS AND SUBSTATIONS - CALCULATION OF EFFECTS |
| IEC 60909-0:2016 | Short-circuit currents in three-phase a.c. systems - Part 0: Calculation of currents |
| I.S. EN 50483-5:2009 | TEST REQUIREMENTS FOR LOW VOLTAGE AERIAL BUNDLED CABLE ACCESSORIES - PART 5: ELECTRICAL AGEING TEST |
| BS EN 50483-5:2009 | Test requirements for low voltage aerial bundled cable accessories Electrical ageing test |
| IEC TR 61901:2016 | Tests recommended on cables with a longitudinally applied metal foil for rated voltages above 30 kV (U<sub>m</sub> = 36 kV) up to and including 500 kV (U<sub>m</sub> = 550 kV) |
| BS EN 60909-0:2016 | Short-circuit currents in three-phase a.c. systems Calculation of currents |
| UNI CEI EN 45510-2-7 : 2011 | GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-7: ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR |
| 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 |
| 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)) |
| IEC 60986:2000+AMD1:2008 CSV | Short-circuit temperature limits of electric cables with rated voltages from 6 kV (<em>U</em><sub>m</sub> = 7,2 kV) up to 30 kV (<em>U</em><sub>m</sub> = 36 kV) |
| I.S. EN 61936-1:2010 | POWER INSTALLATIONS EXCEEDING 1 KV A.C. - PART 1: COMMON RULES |
| IEC TS 61936-2:2015 | Power installations exceeding 1 kV a.c. and 1,5 kV d.c. - Part 2: d.c. |
| I.S. HD 620:2010 | DISTRIBUTION CABLES WITH EXTRUDED INSULATION FOR RATED VOLTAGES FROM 3,6/6 (7,2) KV UP TO AND INCLUDING 20,8/36 (42) KV |
| IEC 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 60909-0:2016 | SHORT-CIRCUIT CURRENTS IN THREE-PHASE A.C. SYSTEMS - PART 0: CALCULATION OF CURRENTS |
| UNE-EN 50522:2012 | Earthing of power installations exceeding 1 kV a.c. |
| IEC 62477-1:2012+AMD1:2016 CSV | Safety requirements for power electronic converter systems and equipment - Part 1: General |
| PD IEC/TS 61936-2:2015 | Power installations exceeding 1 kV a.c. and 1,5 kV d.c. d.c. |
| BS EN 61936-1 : 2010 | POWER INSTALLATIONS EXCEEDING 1 KV A.C - PART 1: COMMON RULES |
| UNE-EN 61936-1:2012 | Power installations exceeding 1 kV a.c. -- Part 1: Common rules |
| EN 45510-2-7:2002 | Guide for procurement of power station equipment - Part 2-7: Electrical equipment - Switchgear and controlgear |
| I.S. EN 45510-2-8:2004 | GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-8: ELECTRICAL EQUIPMENT - POWER CABLES |
| BS EN 61660-2:1997 | Short-circuit currents in d.c. auxiliary installations in power plants and substations Calculation of effects |
| I.S. EN 61238-1:2003 | COMPRESSION AND MECHANICAL CONNECTORS FOR POWER CABLES FOR RATED VOLTAGES UP TO 36 KV (U[M] = 42 KV) - PART 1: TEST METHODS AND REQUIREMENTS |
| ICEA P 32 382 : 2007(R2018) | SHORT CIRCUIT CHARACTERISTICS OF INSULATED CABLES |
| UNI CEI EN 45510-2-8 : 2011 | GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-8: ELECTRICAL EQUIPMENT - POWER CABLES |
| UNE-EN 60865-1:2013 | Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods |
| I.S. HD 637:1999 | POWER INSTALLATIONS EXCEEDING 1 KV A.C. |
| EN 62477-1:2012/A1:2017 | SAFETY REQUIREMENTS FOR POWER ELECTRONIC CONVERTER SYSTEMS AND EQUIPMENT - PART 1: GENERAL (IEC 62477-1:2012/A1:2016) |
| 07/30170388 DC : 0 | BS EN 60364-5-54 - LOW VOLTAGE ELECTRICAL INSTALLATIONS - PART 5-54: SELECTION AND ERECTION OF ELECTRICAL EQUIPMENT - EARTHING ARRANGEMENTS, PROTECTIVE CONDUCTORS AND PROTECTIVE BONDING CONDUCTORS |
| IEC 60865-1:2011 | Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods |
| EN 60865-1:2012 | Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods |
| EN 50522:2010 | Earthing of power installations exceeding 1 kV a.c. |
| EN 61238-1:2003 | Compression and mechanical connectors for power cables for rated voltages up to 36 kV (Um = 42 kV) - Part 1: Test methods and requirements |
| EN 61660-2:1997 | Short-circuit currents in d.c. auxiliary installations in power plants and substations - Part 2: Calculation of effects |
| UNE-HD 60364-5-54:2015 | Low-voltage electrical installations - Part 5-54: Selection and erection of electrical equipment - Earthing arrangements and protective conductors |
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