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I.S. EN 60726:2003

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

DRY-TYPE POWER TRANSFORMERS
Available format(s)

Hardcopy , PDF

Superseded date

08-24-2004

Language(s)

English

Published date

01-01-2003

Preview

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

FOREWORD
PREFACE
SECTION ONE - GENERAL
1 Scope
2 Service conditions
3 Definitions
4 Tappings
5 Connections
6 Ability to withstand short circuit
SECTION TWO - RATING
7 Rating
8 Rating plates
SECTION THREE - COOLING METHODS AND TEMPERATURE RISE
9 Identification according to cooling method
10 Temperature-rise limits
SECTION FOUR - INSULATION LEVELS
11 Insulation levels
SECTION FIVE - TESTS
12 General requirements for tests
13 Measurement of winding resistance
14 Measurement of voltage ratio and check of voltage
   vector relationship
15 Measurement of impedance voltage (principal tapping),
   short-circuit impedance and load loss
16 Measurement of no-load loss and current
17 Separate-source voltage withstand test
18 Induced overvoltage withstand test
19 Lightning impulse test
20 Partial discharge measurement
21 Temperature-rise test
22 Measurement of sound level
23 Short-circuit test
24 Tolerances
SECTION SIX - ENCLOSURES
25 Degrees of protection provided by enclosures
APPENDIX A - Information required with enquiry and order
APPENDIX B - Unusual service conditions

Describes requirements for dry-type power transformers (including auto-transformers) having values of highest voltage for equipment up to and including 36 kV.

DevelopmentNote
Supersedes I.S. HD 464 (03/2003)
DocumentType
Standard
Pages
77
PublisherName
National Standards Authority of Ireland
Status
Superseded
SupersededBy

Standards Relationship
BS EN 60726:2003 Identical
UNE-EN 60726:2003 Identical
NBN EN 60726 : 2003 Identical
EN 60726:2003 Identical
DIN EN 60726 : 2003 Identical
NF EN 60726 : 2003 Identical
SN EN 60726 : 2003 Identical

IEC 60270:2000+AMD1:2015 CSV High-voltage test techniques - Partial discharge measurements
EN 60076-5:2006 Power transformers - Part 5: Ability to withstand short-circuit
IEC 60076-5:2006 Power transformers - Part 5: Ability to withstand short circuit
EN 60270:2001/A1:2016 HIGH-VOLTAGE TEST TECHNIQUES - PARTIAL DISCHARGE MEASUREMENTS (IEC 60270:2000/A1:2015)
IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
IEC 60076-3:2013 Power transformers - Part 3: Insulation levels, dielectric tests and external clearances in air
HD 566 : 200S1 THERMAL EVALUATION AND CLASSIFICATION OF ELECTRICAL INSULATION
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
IEC 60076-1:2011 Power transformers - Part 1: General
EN 60071-1:2006/A1:2010 INSULATION CO-ORDINATION - PART 1: DEFINITIONS, PRINCIPLES AND RULES
IEC 60084:1957 Recommendations for Mercury-arc Convertors
EN 60076-1:2011 POWER TRANSFORMERS - PART 1: GENERAL (IEC 60076-1:2011)
IEC 60071-3:1982 Insulation co-ordination - Part 3: Phase-to-phase insulation co-ordination - Principles, rules and application guide
IEC 60071-2:1996 Insulation co-ordination - Part 2: Application guide
IEC 60076-2:2011 Power transformers - Part 2: Temperature rise for liquid-immersed transformers
EN 60071-2:1997 Insulation co-ordination - Part 2: Application guide
IEC 60186:1987 Voltage transformers
IEC 60119:1960 Recommendations for polycrystalline semiconductor rectifier stacks and equipment
EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
IEC 60071-1:2006+AMD1:2010 CSV Insulation co-ordination - Part 1: Definitions, principles and rules
EN 60076-2:2011 Power transformers - Part 2: Temperature rise for liquid-immersed transformers

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