IEC 60076-16:2011

Power transformers - Part 16: Transformers for wind turbine applications

IEC 60076-16:2011 applies to dry-type and liquid-immersed transformers for rated power 100 kVA up to 10 000 kVA for wind turbine applications having a winding with highest voltage for equipment up to and including 36 kV and at least one winding operating at a voltage greater than 1,1 kV.

Transformateurs de puissance - Partie 16: Transformateurs pour applications éoliennes

La CEI 60076-11:2011 s'applique aux transformateurs de type sec et immergés dans un liquide, pour une puissance assignée comprise entre 100 kVA et 10 000 kVA, destinés à des applications éoliennes, ayant un enroulement avec une tension la plus élevée pour le matériel inférieure ou égale à 36 kV et au moins un enroulement fonctionnant à une tension supérieure à 1,1 kV.

General Information

• Status: Replaced
• Publication Date: 24-Aug-2011
• ICS: 29.180 - Transformers. Reactors
• Technical Committee: TC 14 - Power transformers
• Drafting Committee: WG 31 - TC 14/WG 31
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 02-Oct-2018

Relations

• Replaced By: IEC/IEEE 60076-16:2018 - Power transformers - Part 16: Transformers for wind turbine applications
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60076-16 ®
Edition 1.0 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Power transformers –
Part 16: Transformers for wind turbine applications

Transformateurs de puissance –
Partie 16: Transformateurs pour applications éoliennes

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IEC 60076-16 ®
Edition 1.0 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Power transformers –
Part 16: Transformers for wind turbine applications

Transformateurs de puissance –
Partie 16: Transformateurs pour applications éoliennes

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 29.180 ISBN 978-2-88912-670-5

– 2 – 60076-16 © IEC:2011
CONTENTS
FOREWORD . 4

INTRODUCTION . 6

1 Scope . 7

2 Normative references . 7

3 Terms and definitions . 8

4 Service conditions . 8

4.1 Normal service conditions . 8

4.2 Altitude . 8
4.3 Temperature of cooling air . 8
4.4 Content of harmonic currents in the transformer . 9
4.5 Wave-shape of supply voltage . 9
4.6 Transient over and under voltages . 9
4.7 Humidity and salinity . 10
4.8 Special electrical and environmental conditions around the transformer . 10
4.9 Level of vibration . 11
4.10 Provision for unusual service conditions for transformers for wind turbine
applications . 11
4.11 Transportation and storage conditions . 11
4.12 Corrosion protection . 11
5 Electrical characteristics . 11
5.1 Rated power . 11
5.2 Highest voltage for equipment . 11
5.3 Tappings . 12
5.4 Connection group . 12
5.5 Dimensioning of neutral terminal . 12
5.6 Short circuit impedance . 12
5.7 Insulation levels for high voltage and low voltage windings . 12
5.8 Temperature rise guaranteed at rated conditions . 12
5.9 Overload capability . 13
5.10 Inrush current . 13
5.11 Ability to withstand short circuit . 13
5.12 Operation with forced cooling . 13
6 Rating plate . 13

7 Tests . 13
7.1 List and classification of tests (routine, type and special tests) . 13
7.2 Routine tests . 13
7.3 Type tests . 14
7.4 Special tests . 14
7.4.1 General . 14
7.4.2 Chopped wave test . 14
7.4.3 Electrical resonance frequency test . 14
7.4.4 Climatic tests . 14
7.4.5 Environmental test E3 . 14
7.4.6 Fire behavior test . 15
Annex A (informative) Calculation method and tables . 16
Bibliography . 36

60076-16 © IEC:2011 – 3 –
Figure A.1 – Heat dissipation in a natural ventilated room . 17

Figure A.2 – Schematic diagram of power frequency current injection apparatus . 30

Figure A.3 – Switched transformer winding voltage responses with capacitor injection . 31

Figure A.4 – HV Injection test figure . 32

Figure A.5 – Example of measurement device . 33

Table 1 – Insulation levels . 10

Table A.1 – Impact of harmonics content on liquid-immersed transformer losses . 23
Table A.2 – Impact of harmonics content on dry type transformers losses. 26
Table A.3 – Example of voltage harmonic order . 29

– 4 – 60076-16 © IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
POWER TRANSFORMERS –
Part 16: Transformers for wind turbine applications

FOREWORD
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