IEC/IEEE 60076-57-129:2017

FOREWORD
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Use of normative references
5 General requirements
6 Rating data
7 Losses
8 Test requirements
9 Tests
10 Dielectric tests on transformers
   that have been in service
11 Sound levels
12 Bushings
13 Tap-changer
14 High-frequency modelling
15 Tolerances
16 Rating plate
Annex A (informative) - In service overloading
        of HVDC converter transformers used
        with current commutated valves (either
        mercury arc valves or thyristors)
Annex B (informative) - HVDC converter
        transformers for use with
        voltage source converters
Annex C (informative) - Design review
Annex D (informative) - Transformer
        specification content
Annex E (informative) - Audible sound of
        converter transformers
Annex F (informative) - Determination of
        transformer service load loss
        at rated non-sinusoidal converter
        current from measurements with
        rated transformer current of
        fundamental frequency
Bibliography

IEC/IEEE 60076-57-129:2017(E) specifies requirements of liquid-immersed three-phase and single-phase converter transformers for use in high voltage direct current (HVDC) power transmission systems including back-to-back applications. It applies to transformers having two, three or multiple windings.
This document does not apply to:
- converter transformers for industrial applications (see IEC 61378-1 or IEEE C57.18.10);
- converter transformers for traction applications (see IEC 60310).
This publication cancels and replaces the first edition of IEC 61378-2 published in 2001 and IEEE Std C57.129™ published in 2007.