IEC 60050-421:1990
Current
Current
The latest, up-to-date edition.
International Electrotechnical Vocabulary (IEV) - Part 421: Power transformers and reactors
Available format(s)
Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users
Language(s)
English
Published date
15-10-1990
Publisher
Important note : All end users must be registered with an Account prior to user licenses being assigned.
FOREWORD
PREFACE
Section
1 General terms
2 Terminals
3 Windings
4 Rating
5 Tappings
6 Losses and no-load current
7 Impedance voltage, short-circuit impedance and
voltage drop
8 Temperature rise
9 Insulation
10 Connections
11 On-load tap-changers
12 On-load tap-changer motor-drive mechanisms
INDEX
It has the status of a horizontal standard in accordance with IEC Guide 108.
| Committee |
TC 1
|
| DevelopmentNote |
Also numbered as BS 4727-2:GRP04(1991). (07/2005)
|
| DocumentType |
Standard
|
| Pages |
68
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Standards | Relationship |
| NEN 10050-421 : 1991 | Identical |
| NFC 01 421 : 1990 | Identical |
| SAC GB/T 2900.95 : 2015 | Identical |
| UNE 21302-421:1992 | Identical |
| BS 4727-2:Group 04:1991 | Identical |
| CEI EN 60027-7 : 2011 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 7: POWER GENERATION, TRANSMISSION AND DISTRIBUTION |
| CLC/TR 60919-2:2010 | PERFORMANCE OF HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS WITH LINE-COMMUTATED CONVERTERS - PART 2: FAULTS AND SWITCHING |
| 12/30257150 DC : 0 | BS EN 62770 - FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - UNUSED NATURAL ESTERS LIQUIDS FOR TRANSFORMERS AND SIMILAR ELECTRICAL EQUIPMENT |
| UNE-EN 61378-1:2012 | Convertor transformers -- Part 1: Transformers for industrial applications |
| CEI 14-4/8 : 2001 | POWER TRANSFORMERS - APPLICATION GUIDE |
| 07/30167951 DC : 0 | BS EN 60076-1 - POWER TRANSFORMERS - PART 1: GENERAL |
| BS EN 60310:2016 | Railway applications. Traction transformers and inductors on board rolling stock |
| BS PD IEC TR 60919-2 : 2008 | PERFORMANCE OF HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS WITH LINE-COMMUTATED CONVERTERS - PART 2: FAULTS AND SWITCHING |
| I.S. EN 61869-6:2016 | INSTRUMENT TRANSFORMERS - PART 6: ADDITIONAL GENERAL REQUIREMENTS FOR LOW-POWER INSTRUMENT TRANSFORMERS |
| EN 60137:2017 | Insulated bushings for alternating voltages above 1 000 V |
| BS EN 61558-1 : 2005 | SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES, REACTORS AND SIMILAR PRODUCTS - PART 1: GENERAL REQUIREMENTS AND TESTS |
| IEC 60139:2000 | Preparation of outline drawings for cathode-ray tubes, their components, connections and gauges |
| EN 61558-1:2005/A1:2009 | SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES, REACTORS AND SIMILAR PRODUCTS - PART 1: GENERAL REQUIREMENTS AND TESTS |
| EN 61642:1997 | Industrial a.c. networks affected by harmonics - Application of filters and shunt capacitors |
| EN 61869-6:2016 | Instrument transformers - Part 6: Additional general requirements for low-power instrument transformers |
| EN 61378-1:2011 | Convertor transformers - Part 1: Transformers for industrial applications |
| 04/30111589 DC : 0 | |
| BS IEC 60076-8:1997 | Power transformers Application guide |
| 16/30336914 DC : 0 | BS EN 60076-57-129 ED 1.0 - CONVERTOR TRANSFORMERS - PART 57-129: TRANSFORMERS FOR HVDC APPLICATIONS |
| 13/30265253 DC : 0 | BS EN 60214-1 ED 2 - TAP-CHANGERS - PART 1: PERFORMANCE REQUIREMENTS AND TEST METHODS |
| NF EN 60027-7 : 2011 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 7: POWER GENERATION, TRANSMISSION AND DISTRIBUTION |
| CEI EN 60076-3 : 2015 | POWER TRANSFORMERS - PART 3: INSULATION LEVELS, DIELECTRIC TESTS AND EXTERNAL CLEARANCES IN AIR |
| NF EN 61378-1 : 2014 | CONVERTOR TRANSFORMERS - PART 1: TRANSFORMERS FOR INDUSTRIAL APPLICATIONS |
| BS EN 61642:1998 | Industrial a.c. networks affected by harmonics. Application of filters and shunt capacitors |
| 18/30368743 DC (published 2018-04) | BS EN 60947-6-2. Low-voltage switchgear and controlgear Part 6-2. Multiple function equipment. Control and protective switching devices (or equipment) (CPS) |
| 08/30178668 DC : DRAFT FEB 2008 | BS EN 61378-1 - CONVERTER TRANSFORMERS - PART 1: TRANSFORMERS FOR INDUSTRIAL APPLICATIONS |
| I.S. EN 60310:2016 | RAILWAY APPLICATIONS - TRACTION TRANSFORMERS AND INDUCTORS ON BOARD ROLLING STOCK |
| I.S. EN 60137:2017 | INSULATED BUSHINGS FOR ALTERNATING VOLTAGES ABOVE 1000 V |
| CEI EN 61378-1 : 2012 | CONVERTOR TRANSFORMERS - PART 1: TRANSFORMERS FOR INDUSTRIAL APPLICATIONS |
| DIN 40108:2003-06 | ELECTRIC POWER TECHNOLOGY - CURRENT SYSTEMS - CONCEPTS, QUANTITIES, LETTER SYMBOLS |
| IEC 60137:2017 RLV | Insulated bushings for alternating voltages above 1000 V |
| VDE 0560-430 : 1998 | INDUSTRIAL A.C. NETWORKS AFFECTED BY HARMONICS - APPLICATION OF FILTERS AND SHUNT CAPACITORS |
| DIN EN 61642 : 1998 | INDUSTRIAL A.C. NETWORKS AFFECTED BY HARMONICS - APPLICATION OF FILTERS AND SHUNT CAPACITORS |
| CEI EN 62770 : 2014 | FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - UNUSED NATURAL ESTERS FOR TRANSFORMERS AND SIMILAR ELECTRICAL EQUIPMENT |
| UNE-EN 60137:2011 | Insulated bushings for alternating voltages above 1 000 V |
| BS EN 62770:2014 | Fluids for electrotechnical applications. Unused natural esters for transformers and similar electrical equipment |
| BS EN 60214-1:2014 | Tap-changers Performance requirements and test methods |
| 14/30271248 DC : 0 | BS EN 60310 ED 4.0 - RAILWAY APPLICATIONS - TRACTION TRANSFORMERS AND INDUCTORS ON BOARD ROLLING STOCK |
| IEC/IEEE 60076-57-129:2017 | Power transformers - Part 57-129: Transformers for HVDC applications |
| BS EN 60137:2017 | Insulated bushings for alternating voltages above 1000 V |
| BS EN 60633 : 1999 | TERMINOLOGY FOR HIGH-VOLTAGE DIRECT CURRENT (HVDC) TRANSMISSION |
| IEC 61558-1:2017 | Safety of transformers, reactors, power supply units and combinations thereof - Part 1: General requirements and tests |
| IEC 60633:1998+AMD1:2009+AMD2:2015 CSV | Terminology for high-voltage direct current (HVDC) transmission |
| IEC 60076-3:2013+AMD1:2018 CSV | POWER TRANSFORMERS - PART 3: INSULATION LEVELS, DIELECTRIC TESTS AND EXTERNAL CLEARANCES IN AIR |
| IEC 62770:2013 | Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment |
| I.S. EN 60076-3:2013 | POWER TRANSFORMERS - PART 3: INSULATION LEVELS, DIELECTRIC TESTS AND EXTERNAL CLEARANCES IN AIR |
| S.R. CLC/TR 60919-2:2010 | PERFORMANCE OF HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS WITH LINE-COMMUTATED CONVERTERS - PART 2: FAULTS AND SWITCHING |
| 10/30232718 DC : 0 | BS EN 60076-3 - POWER TRANSFORMERS - PART 3: INSULATION LEVELS, DIELECTRIC TESTS AND EXTERNAL CLEARANCES IN AIR |
| BS EN 61378-1:2011 | Convertor transformers Transformers for industrial applications |
| BS EN 60076-1:2011 | Power transformers General |
| BS EN 60079-6:2007 | Explosive atmospheres Equipment protected by oil immersion \'o\' |
| 16/30318517 DC : 0 | BS EN 60137 ED. 7.0 - INSULATED BUSHINGS FOR ALTERNATING VOLTAGES ABOVE 1000 V |
| I.S. EN 60633:1999 | TERMINOLOGY FOR HIGH-VOLTAGE DIRECT CURRENT (HVDC) TRANSMISSION |
| I.S. EN 60027-7:2010 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 7: POWER GENERATION, TRANSMISSION AND DISTRIBUTION |
| I.S. EN 61642:1999 | INDUSTRIAL A.C. NETWORKS AFFECTED BY HARMONICS - APPLICATION OF FILTERS AND SHUNT CAPACITORS |
| I.S. EN 62770:2014 | FLUIDS FOR ELECTROTECHNICAL APPLICATIONS - UNUSED NATURAL ESTERS FOR TRANSFORMERS AND SIMILAR ELECTRICAL EQUIPMENT |
| CEI EN 60076-1 : 2015 | POWER TRANSFORMERS - PART 1: GENERAL |
| IEC 60079-6:2015 | Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o" |
| IEC 61378-1:2011 | Converter transformers - Part 1: Transformers for industrial applications |
| UNE-EN 60079-6:2016 | Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o" |
| UNE-EN 60076-1:2013 | Power transformers - Part 1: General |
| IEC 61747-1:1998+AMD1:2003 CSV | Liquid crystal and solid-state display devices - Part 1: Generic specification |
| IEC 60076-1:2011 | Power transformers - Part 1: General |
| 15/30328159 DC : 0 | BS EN 61558-1 - SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES, REACTORS AND SIMILAR PRODUCTS - PART 1: GENERAL REQUIREMENTS AND TESTS |
| IEC 60310:2016 | Railway applications - Traction transformers and inductors on board rolling stock |
| IEC 60214-1:2014 | Tap-changers - Part 1: Performance requirements and test methods |
| IEC 60027-7:2010 | Letter symbols to be used in electrical technology - Part 7: Power generation, transmission and distribution |
| BS EN 61869-6:2016 | Instrument transformers Additional general requirements for low-power instrument transformers |
| UNE-EN 62770:2014 | Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment |
| CEI CLC/TR 60919-2 : 2013 | PERFORMANCE OF HIGH-VOLTAGE DIRECT CURRENT (HVDC) SYSTEMS WITH LINE-COMMUTATED CONVERTERS - PART 2: FAULTS AND SWITCHING |
| BS EN 60027-7:2010 | Letter symbols to be used in electrical technology Power generation, transmission and distribution |
| IEC 60137:2017 | Insulated bushings for alternating voltages above 1000 V |
| IEC TR 60919-2:2008+AMD1:2015 CSV | Performance of high-voltage direct current (HVDC) systems withline-commutated converters - Part 2: Faults and switching |
| I.S. EN 60076-1:2011 | POWER TRANSFORMERS - PART 1: GENERAL (IEC 60076-1:2011) |
| BS EN 60076-3 : 2013 | POWER TRANSFORMERS - PART 3: INSULATION LEVELS, DIELECTRIC TESTS AND EXTERNAL CLEARANCES IN AIR |
| I.S. EN 60079-6:2015 | EXPLOSIVE ATMOSPHERES - PART 6: EQUIPMENT PROTECTION BY LIQUID IMMERSION 'O' |
| I.S. EN 61378-1:2011 | CONVERTOR TRANSFORMERS - PART 1: TRANSFORMERS FOR INDUSTRIAL APPLICATIONS (IEC 61378-1:2011) |
| CEI EN 60137 : 2009 | INSULATED BUSHINGS FOR ALTERNATING VOLTAGES ABOVE 1000 V |
| UNE-EN 60214-1:2015 | Tap-changers - Part 1: Performance requirements and test methods |
| I.S. EN 60214-1:2014 | TAP-CHANGERS - PART 1: PERFORMANCE REQUIREMENTS AND TEST METHODS |
| EN 60633:1999/A2:2015 | TERMINOLOGY FOR HIGH-VOLTAGE DIRECT CURRENT (HVDC) TRANSMISSION (IEC 60633:1998/A2:2015) |
| IEC 61869-6:2016 | Instrument transformers - Part 6: Additional general requirements for low-power instrument transformers |
| EN 62770:2014 | Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment |
| EN 60027-7:2010 | Letter symbols to be used in electrical technology - Part 7: Power generation, transmission and distribution |
| EN 60139:2001 | Preparation of outline drawings for cathode-ray tubes, their components, connections and gauges |
| EN 60214-1:2014 | Tap-changers - Part 1: Performance requirements and test methods |
| EN 60076-1:2011 | POWER TRANSFORMERS - PART 1: GENERAL (IEC 60076-1:2011) |
| EN 60079-6:2015 | Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o" |
| DIN EN 61558-2-17 : 1998 | SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 2-17: PARTICULAR REQUIREMENTS FOR TRANSFORMERS FOR SWITCH MODE POWER SUPPLIES |
| EN 60310:2016/AC:2018-03 | RAILWAY APPLICATIONS - TRACTION TRANSFORMERS AND INDUCTORS ON BOARD ROLLING STOCK (IEC 60310:2016/COR1:2018) |
| EN 60076-3:2013/A1:2018 | POWER TRANSFORMERS - PART 3: INSULATION LEVELS, DIELECTRIC TESTS AND EXTERNAL CLEARANCES IN AIR (IEC 60076-3:2013/A1:2018) |
| CAN/CSA-E61558-1:12 (R2017) | Safety of power transformers, power supplies, reactors and similar products - Part 1: General requirements and tests (Adopted IEC 61558- 1:1997 + A1:1998, edition 2.1, 2009-04 with Canadian deviations) | Sécurité des transformateurs, alimentations, bobines d\'inductance et produits analogues - Partie 1: Exigences générales et essais (norme CEI 61558-1:1997 + A1:1998 adoptée, édition 2.1, 2009-04 avec exigences propres au Canada) |
| CSA E61558.1:2012 | SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES, REACTORS AND SIMILAR PRODUCTS - PART 1: GENERAL REQUIREMENTS AND TESTS |
| CSA E61558.1 : 2012 : INC : UPD 1 : 2014 | SAFETY OF POWER TRANSFORMERS, POWER SUPPLIES, REACTORS AND SIMILAR PRODUCTS - PART 1: GENERAL REQUIREMENTS AND TESTS |
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, flexible and cost effective.