IEC 61869-4:2013

IEC 61869-4 ®
Edition 1.0 2013-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Instrument transformers –
Part 4: Additional requirements for combined transformers

Transformateurs de mesure –
Partie 4: Exigences supplémentaires concernant les transformateurs combinés

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IEC 61869-4 ®
Edition 1.0 2013-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Instrument transformers –
Part 4: Additional requirements for combined transformers

Transformateurs de mesure –
Partie 4: Exigences supplémentaires concernant les transformateurs combinés

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 17.220.20 ISBN 978-2-8322-1215-8

– 2 – 61869-4 © IEC:2013
CONTENTS
FOREWORD . 3
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 7
4 Normal and special service conditions . 10
5 Ratings . 10
6 Design and construction . 10
7 Tests . 11
8 Rules for transport, storage, erection, operation and maintenance . 18
9 Safety . 18
10 Influence of products on the natural environment . 18
Annexes . 18
Annex 4A (normative) The mutual influence of current and voltage transformers . 19

Figure 401 – Geometrical construction of the circuit . 14
Figure 402 – Measurement 4 . 16
Figure 403 – Measurement 5 . 16
Figure 404 – Error diagram of a voltage transformer class 0,2 . 17
Figure 405 – Error diagram of a current transformer class 0,2 at 5 % of rated current . 17
Figure 4A.1 – Current conductor and magnetic field influencing a voltage transformer . 20

Table 10 – List of tests. 11

61869-4 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSTRUMENT TRANSFORMERS –
Part 4: Additional requirements for combined transformers

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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This International Standard IEC 61869-4 has been prepared by IEC technical committee 38:
Instrument transformers.
This standard replaces IEC 60044-3: Combined transformers.
The text of this standard is based on the following documents:
FDIS Report on voting
38/468/FDIS 38/472/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 61869-4 © IEC:2013
This standard is Part 4 of IEC 61869, published under the general title Instrument
transformers.
This Part 4 is to be read in conjunction with, and is based on, IEC 61869-1 General
Requirements – first edition (2007), IEC 61869-2, Additional requirements for current
transformers first edition (2012) and IEC 61869-3, Additional requirements for inductive
voltage transformers first edition (2011) – however, the reader is encouraged to use the most
recent edition of these documents.
This Part 4 follows the structure of IEC 61869-1, IEC 61869-2 and IEC 61869-3 and
supplements or modifies its corresponding clauses.
When a particular subclause of Part 1, 2 or 3 is not mentioned in this Part 4, that subclause
applies as far as is reasonable. When this standard states “addition”, “modification” or
“replacement”, the relevant text in Part 1, 2 or 3 is to be adapted accordingly.
For additional clauses, subclauses, figures, tables, annexes or notes, the following numbering
system is used:
– clauses, subclauses, tables and figures that are numbered starting from 401 are additional
to those in Part 1, 2 or 3;
– additional annexes are lettered 4A, 4B, etc.
An overview of the planned set of standards at the date of publication of this document is
given below. The updated list of standards issued by IEC TC38 is available at the website:
www.iec.ch
The contents of the corrigendum of August 2014 have been included in this copy.

61869-4 © IEC:2013 – 5 –
PRODUCT FAMILY STANDARDS PRODUCT PRODUCTS OLD
STANDARD STANDARD
ADDITIONAL REQUIREMENTS FOR 60044-1
61869-2
CURRENT TRANSFORMERS
60044-6
ADDITIONAL REQUIREMENTS FOR 60044-2
61869-3
INDUCTIVE VOLTAGE TRANSFORMERS

61869-4 ADDITIONAL REQUIREMENTS FOR 60044-3
COMBINED TRANSFORMERS
61869-5 ADDITIONAL REQUIREMENTS FOR 60044-5

CAPACITIVE VOLTAGE TRANSFORMERS
61869-1
ADDITIONAL REQUIREMENTS FOR 60044-7
61869-6 61869-7
ELECTRONIC VOLTAGE
TRANSFORMERS
GENERAL
ADDITIONAL
REQUIREMENTS
GENERAL
FOR
REQUIREMENT 61869-8 ADDITIONAL REQUIREMENTS FOR 60044-8
INSTRUMENT
FOR LOW POWER ELECTRONIC CURRENT
TRANSFORMERS
TRANSFORMERS
INSTRUMENT
TRANSFORMERS
61869-9 DIGITAL INTERFACE FOR INSTRUMENT
TRANSFORMERS
61869-10 ADDITIONAL REQUIREMENTS FOR LOW-
POWER STAND-ALONE CURRENT
SENSORS
61869-11 ADDITIONAL REQUIREMENTS FOR LOW 60044-7
POWER STAND ALONE VOLTAGE
SENSORS
ADDITIONAL REQUIREMENTS FOR
61869-12
COMBINED ELECTRONIC INSTRUMENT
TRANSFORMER OR COMBINED STAND
ALONE SENSORS
STAND ALONE MERGING UNIT
61869-13
ADDITIONAL REQUIREMENTS FOR DC
61869-14
CURRENT TRANSFORMERS
61869-15 ADDITIONAL REQUIREMENTS FOR DC

VOLTAGE TRANSFORMERS
...