Table of Contents

1 -  AS 60146.1.3-2002 SEMICONDUCTOR CONVERTERS - GENERAL REQUIREMENTS AND LINE COMMUTATED CONVERTERS-TRANSFORMERS AND REACTORS
4 -  PREFACE
5 -  CONTENTS
7 -  1 Scope
7 -  2 Normative references
8 -  3 Rated values for converter transformers
8 -  3.1 Rated current values
8 -  3.1.1 Single converter or double converter supplied from one common cell winding
8 -  3.1.2 Double converter where each thyristor assembly has separate cell windings
8 -  3.2 Temperature limits of cooling media
8 -  3.2.1 Air cooled outdoor equipment
8 -  3.2.2 Air cooled indoor equipment
8 -  3.2.3 Water cooled equipment
8 -  4 Losses and voltage drops in transformers and reactors
8 -  4.1 Losses in the transformer windings
9 -  4.2 Losses in interphase transformers, current balancing reactors, series-smoothing reactors, transductors and other current regulating accessories
9 -  4.2.1 lnterphase transformers
9 -  4.2.2 Current balancing reactors
9 -  4.2.3 Series-smoothing reactors
9 -  4.2.4 Transductors and other current regulating accessories
10 -  4.3 Voltage drops in transformers and reactors
10 -  5 Tests for converter transformers
10 -  5.1 Measurement of commutating reactance and determination of inductive voltage drop (type test)
10 -  5.1.1 Commutating reactance
10 -  5.1.2 Inductive voltage regulation
11 -  5.2 Short-circuit test (type test and routine test)
11 -  5.3 Temperature rise test (type test)
15 -  Annex A - Corrections to be applied when cooling medium temperature is higher than standard

Abstract

Specifies characteristics where converter transformers differ from ordinary power transformers. This Standard has been reproduced from and is technically identical to IEC 60146-1-3:1991.

RECONFIRMATION NOTICE
Technical Committee EL-027 has reviewed the content of this publication and in
accordance with Standards Australia procedures for reconfirmation, it has been determined
that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original
date of publication. Users are advised to ensure that they are using the latest versions of
such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for
reconfirmation on 25 September 2013.
The following are represented on Technical Committee EL-027:
Australian Communications and Media Authority
Australian Industry Group
Bureau of Steel Manufacturers of Australia
Engineers Australia
RMIT University

Scope

This Part 1-3 of the International Standard relates, in general, to those characteristics wherein converter transformers differ from ordinary power transformers. In all other respects, the rules specified in IEC 76 shall apply to converter transformers also, as far as they are not in contradiction with this Standard.
It should be borne in mind that a rectifier transformer operates with non-sinusoidal current waveshape. In single-way connection, the current in each cell winding contains a d.c. component which calls for special attention in design and testing. In some cases, a special design is necessary when external short-circuits and cell failures would cause abnormal stress.
For certain types of transformers, the waveshape of the normal operating voltage is non-sinusoidal. The core loss of such equipment is to be determined by applying a sinusoidal voltage having the same half-cycle arithmetic mean value and the same fundamental frequency as the voltage applied in service.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	This standard has been reconfirmed in Australia in 2013 and remains current in New Zealand. Reconfirmation Notice 13-01-2014
Pages
ISBN
Committee	EL-027
Supersedes	DR 02098-02100 CP AS 1955.1-1977 DR 02100 CP