SIST EN 61869-4:2014

SLOVENSKI STANDARD
01-september-2014
1DGRPHãþD
SIST EN 60044-3:2003
Instrumentni transformatorji - 4. del: Kombinirani transformatorji (IEC 61869-
4:2013)
Instrument transformers - Part 4: Combined transformers
/
Transformateurs de mesure - Partie 4: Transformateurs combinés
Ta slovenski standard je istoveten z: EN 61869-4:2014
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61869-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2014
ICS 17.220.20 Supersedes EN 60044-3:2003
English Version
Instrument transformers - Part 4: Additional requirements for
combined transformers
(IEC 61869-4:2013)
Transformateurs de mesure - Partie 4: Exigences Messwandler - Teil 4: Zusätzliche Anforderungen an
supplémentaires concernant les transformateurs combinés kombinierte Wandler
(CEI 61869-4:2013) (IEC 61869-4:2013)
This European Standard was approved by CENELEC on 2013-12-24. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61869-4:2014 E
Foreword
The text of document 38/468/FDIS, future edition 1 of IEC 61869-4, prepared by IEC/TC 38
"Instrument transformers" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 61869-4:2014.
The following dates are fixed:
• latest date by which the document has (dop) 2014-12-06
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-12-24
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60044-3:2003.
This Part 4 is to be read in conjunction with, and is based on, EN 61869-1:2009, General
requirements, EN 61869-2:2012, Additional requirements for current transform, and EN 61869-
3:2011, Additional requirements for inductive voltage transformers. However, the reader is
encouraged to use the most recent edition of these documents.
This Part 4 follows the structure of EN 61869-1, EN 61869-2 and EN 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment
Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).
Endorsement notice
The text of the International Standard IEC 61869-4:2013 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 61869-4:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Clause 2 of EN 61869-1:2009 is applicable with the following modifications:

Publication Year Title EN/HD Year

Addition:
IEC 60028 - International standard of resistance for - -
copper
IEC 60038 - IEC standard voltages EN 60038 -

IEC 61869-1 (mod) 2007 Instrument transformers - EN 61869-1 2009
Part 1: General requirements
IEC 61869-2 2012 Instrument transformers - EN 61869-2 2012
Part 2: Additional requirements for current
transformers
IEC 61869-3 2011 Instrument transformers - EN 61869-3 2011
Part 3: Additional requirements for inductive
voltage transformers
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
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
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
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
– 6 – 61869-4 © IEC:2013
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
61869-4 © IEC:2013 – 7 –
INSTRUMENT TRANSFORMERS –
Part 4: Additional requirements for combined transformers

1 Scope
This part of IEC 61869 applies to newly-manufactured combined transformers for use with
electrical measuring instruments and electrical protective devices at frequencies from 15 Hz
to 100 Hz.
The requirements and tests of this standard, in addition to the requirements and tests of
IEC 61869-1, IEC 61869-2 and IEC 61869-3 cover current and inductive voltage transformers
that are necessary for combined instrument transformers.
2 Normative references
Clause 2 of IEC 61869-1:2007 is applicable with the following modifications:
Addition:
IEC 60028, International Standard of resistance for copper
IEC 60038, IEC standard voltages
IEC 61869-1:2007, Instrument Transformers – Part 1: General requirements
IEC 61869-2:2012, Instrument Transformers – Part 2: Additional requirements for current
transformers
IEC 61869-3:2011, Instrument Transformers – Part 3: Additional requirements for inductive
voltage transformers
3 Terms, definitions and abbreviations
For the purposes of this document, the terms and definitions given in IEC 61869-1:2007,
IEC 61869-2:2012 and IEC 61869-3:2011, as well as the following apply.
3.1 General definitions
3.1.401
combined instrument transformer
instrument transformer consisting of a current and a voltage transformer in the same
enclosure
3.1.402
error of voltage transformer
ε
v
ratio error of voltage transformer determined with disconnected current transformer

– 8 – 61869-4 © IEC:2013
3.1.403
phase displacement of voltage transformer
δ
v
phase displacement of voltage transformer determined with disconnected current transformer
3.1.404
voltage induced by rated continuous thermal current
U
v
the voltage induced by the rated continuous thermal current of the current transformer in the
voltage transformer defined as a measure of the maximum variation of the voltage error
3.1.405
greatest variation of voltage error
Δε
v
the greatest possible variation of the ratio error of the voltage transformer due to voltage
induced by the rated continuous thermal current of the current transformer
3.1.406
greatest variation of phase displacement
Δδ
v
the greatest possible variation of the phase displacement of the voltage transformer due to
voltage induced by the rated continuous thermal current of the current transformer
3.1.407
absolute value of the variations of voltage error
ε′
v
sum of the absolute values of the ratio error of the voltage transformer and the greatest
variation of the voltage error obtained at specified voltage
3.1.408
absolute value of the variations of phase displacement of voltage transformer
δ′
v
sum of the absolute values of the phase displacement of the voltage transformer and the
greatest variation of the phase displacement obtained at specified voltage
3.1.409
voltage induced at rated short-time thermal current
U
e
the voltage induced by the short-time thermal current of the current transformer in the voltage
transformer and marked on the rating plate
3.1.410
error of current transformer
ε
i
ratio error of current transformer determined with unexcited voltage transformer
3.1.411
phase displacement of current transformer
δ
i
phase displacement of current transformer determined with unexcited voltage transformer
3.1.412
voltage generated in the current transformer by capacitive current
U
i
voltage generated in the current transformer by capacitive current due to applied voltage of
the voltage transformer and defined as a measure of the maximum variation of the current
error
61869-4 © IEC:2013 – 9 –
3.1.413
greatest variation of current error
Δε
i
the greatest possible variation of the ratio error of the current transformer due to voltage
generated in the current transformer by capacitive current
3.1.414
greatest variation of phase displacement
Δδ
i
the greatest possible variation of the phase displacement of the current transformer due to
voltage generated in the current transformer by capacitive current
3.1.415
absolute value of the variations of current error
ε′
i
sum of the absolute values of the ratio error of the current transformer and the greatest
variation of the current error obtained at specified current
3.1.416
absolute value of the variations of phase displacement of current transformer
δ’
i
sum of the absolute values of the phase displacement of the current transformer and the
greatest variation of the phase displacement obtained at specified current
3.7 Index of abbreviations and symbols
Replacement:
ε error of voltage transformer
v
δ phase displacement of the voltage transformer
v
U
voltage induced by the rated continuous thermal current
v
Δε the greatest variation of the voltage error
v
U rated secondary voltage
sr
Δδ the greatest variation of the phase displacement of the voltage transformer
v
ε′ the absolute value of the variations of the voltage error
v
δ′ the absolute value of the variations of the phase displacement of voltage transformer
v
I
rated short-time thermal current
th
I
rated continuous thermal current
cth
U
the voltage induced at rated short-time thermal current
e
error of current transformer
ε
i
δ phase displacement of the current transformer
i
U
voltage generated in the current transformer by capacitive current
i
the greatest variation of the current error
Δε
i
Δδ the greatest variation of the phase displacement of the current transformer
i
the absolute value of the variations of the current error
ε′
i
δ’ the absolute value of the variations of the phase displacement of current transformer
i
I rated secondary current
sr
– 10 – 61869-4 © IEC:2013
4 Normal and special service conditions
Clause 4 of IEC 61869-1:2007 is applicable.
5 Ratings
Clause 5 of IEC 61869-1:2007, Clause 5 of IEC 61869-2:2012 and Clau
...