EN 61869-2:2012

SLOVENSKI STANDARD
01-marec-2013
1DGRPHãþD
SIST EN 60044-6:2001
Instrumentni transformatorji - 2. del: Dodatne zahteve za tokovne transformatorje
Instrument transformers - Part 2: Additional requirements for current transformers
Messwandler - Teil 2: Zusätzliche Anforderungen für Stromwandler
Transformateurs de mesure - Partie 2: Exigences supplémentaires concernant les
transformateurs de courant
Ta slovenski standard je istoveten z: EN 61869-2:2012
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 61869-2
NORME EUROPÉENNE
November 2012
EUROPÄISCHE NORM
ICS 17.220.20 Supersedes EN 60044-1:1999 + A1:2000 + A2:2003, EN 60044-6:1999

English version
Instrument transformers -
Part 2: Additional requirements for current transformers
(IEC 61869-2:2012)
Transformateurs de mesure -  Messwandler -
Partie 2: Exigences supplémentaires Teil 2: Zusätzliche Anforderungen für
concernant les transformateurs de courant Stromwandler
(CEI 61869-2:2012) (IEC 61869-2:2012)

This European Standard was approved by CENELEC on 2012-10-23. 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.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61869-2:2012 E
Foreword
The text of document 38/435/FDIS, future edition 1 of IEC 61869-2, prepared by IEC/TC 38, "Instrument
transformers" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
(dop) 2013-07-23
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2015-10-23

standards conflicting with the
document have to be withdrawn
This document supersedes EN 60044-1:1999 + A1:2000 + A2:2003 and EN 60044-6:1999.
Additionally it introduces technical innovations in the standardization and adaptation of the requirements
for current transformers for transient performance.

This Part 2 is to be used in conjunction with, and is based on, EN 61869-1:2009, General Requirements –
however the reader is encouraged to use its most recent edition.
This Part 2 follows the structure of EN 61869-1:2009 and supplements or modifies its corresponding
clauses.
When a particular clause/subclause of Part 1 is not mentioned in this Part 2, that clause/subclause
applies as far as is reasonable. When this standard states “addition”, “modification” or “replacement”, the
relevant text in Part 1 is to be adapted accordingly.
For additional clauses, subclauses, figures, tables, annexes or notes, the following numbering system is
used:
– clauses, subclauses, tables, figures and notes that are numbered starting from 201 are additional to
those in Part 1;
– additional annexes are lettered 2A, 2B, etc.
Annex ZZ of EN 61869-1 is not applicable for this part of the series.
An overview of the planned set of standards at the date of publication of this document is given below.
The updated list of standards prepared by IEC TC38 is available at the website: www.iec.ch; the updated
list of standards prepared by IEC TC38 and approved by CENELEC is available at the website:
www.cenelec.eu.
- 3 - EN 61869-2:2012
PRODUCT FAMILY STANDARDS PRODUCT PRODUCTS OLD
STANDARD STANDARD
ADDITIONAL REQUIREMENTS FOR 60044-1
61869-2
CURRENT TRANSFORMERS
ADDITIONAL REQUIREMENTS FOR 60044-2
61869-3
INDUCTIVE VOLTAGE TRANSFORMERS

ADDITIONAL REQUIREMENTS FOR 60044-3
61869-4
COMBINED TRANSFORMERS
ADDITIONAL REQUIREMENTS FOR 60044-5
61869-5
CAPACITIVE VOLTAGE TRANSFORMERS
61869-1
ADDITIONAL REQUIREMENTS FOR 60044-7
61869-6 61869-7
GENERAL
ELECTRONIC VOLTAGE TRANSFORMERS
REQUIREMENTS ADDITIONAL
GENERAL
FOR INSTRUMENT
ADDITIONAL REQUIREMENTS FOR 60044-8
61869-8
REQUIREMENT
TRANSFORMERS
ELECTRONIC CURRENT TRANSFORMERS
FOR ELECTRONIC
INSTRUMENT
TRANSFORMERS DIGITAL INTERFACE FOR INSTRUMENT
61869-9
AND LOW POWER TRANSFORMERS
STAND ALONE
SENSORS
ADDITIONAL REQUIREMENTS FOR LOW-
61869-10
POWER STAND-ALONE CURRENT SENSORS
ADDITIONAL REQUIREMENTS FOR LOW 60044-7
61869-11
POWER STAND ALONE VOLTAGE SENSOR
ADDITIONAL REQUIREMENTS FOR
61869-12
COMBINED ELECTRONIC INSTRUMENT
TRANSFORMER OR COMBINED STAND
ALONE SENSORS
STAND ALONE MERGING UNIT
61869-13
Since the publication of EN 60044-6 (Requirements for protective current transformers for transient
performance) in 1999, the area of application of this kind of current transformers has been extended. As a
consequence, the theoretical background for the dimensioning according to the electrical requirements
has become much more complex. In order to keep this standard as user-friendly as possible, the
explanation of the background information will be transferred to the Technical Report IEC/TR 61869-100,
which is now in preparation.
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 61869-2:2012 was approved by CENELEC as a European
Standard without any modification.

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.
Addition to Annex ZA of EN 61869-1:2009:

Publication Year Title EN/HD Year

IEC 61869-1 (mod) 2007 Instrument transformers - EN 61869-1 2009
Part 1: General requirements
IEC 61869-2 ®
Edition 1.0 2012-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Instrument transformers –
Part 2: Additional requirements for current transformers

Transformateurs de mesure –
Partie 2: Exigences supplémentaires concernant les transformateurs de courant

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 17.220.20 ISBN 978-2-83220-293-7

– 2 – 61869-2 © IEC:2012
CONTENTS
FOREWORD . 5
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
3.1 General definitions . 8
3.3 Definitions related to current ratings . 9
3.4 Definitions related to accuracy . 10
3.7 Index of abbreviations . 18
5 Ratings . 20
5.3 Rated insulation levels . 20
5.3.2 Rated primary terminal insulation level . 20
5.3.5 Insulation requirements for secondary terminals . 20
5.3.201 Inter-turn insulation requirements . 20
5.5 Rated output . 20
5.5.201 Rated output values . 20
5.5.202 Rated resistive burden values . 20
5.6 Rated accuracy class . 21
5.6.201 Measuring current transformers . 21
5.6.202 Protective current transformers . 22
5.6.203 Class assignments for selectable-ratio current transformers . 26
5.201 Standard values for rated primary current . 26
5.202 Standard values for rated secondary current . 27
5.203 Standard values for rated continuous thermal current . 27
5.204 Short-time current ratings . 27
5.204.1 Rated short-time thermal current (I ) . 27
th
5.204.2 Rated dynamic current (I ) . 27
dyn
6 Design and construction . 27
6.4 Requirements for temperature rise of parts and components . 27
6.4.1 General . 27
6.13 Markings . 27
6.13.201 Terminal markings . 27
6.13.202 Rating plate markings . 28
7 Tests . 30
7.1 General . 30
7.1.2 Lists of tests . 30
7.2 Type tests . 31
7.2.2 Temperature-rise test . 31
7.2.3 Impulse voltage withstand test on primary terminals . 33
7.2.6 Tests for accuracy . 33
7.2.201 Short-time current tests . 35
7.3 Routine tests . 36
7.3.1 Power-frequency voltage withstand tests on primary terminals . 36
7.3.5 Tests for accuracy . 36
7.3.201 Determination of the secondary winding resistance (R ) . 38
ct
7.3.202 Determination of the secondary loop time constant (T ) . 38
s
61869-2 © IEC:2012 – 3 –
7.3.203 Test for rated knee point e.m.f. (E ) and exciting current at E . 39
k k
7.3.204 Inter-turn overvoltage test . 39
7.4 Special tests . 40
7.4.3 Measurement of capacitance and dielectric dissipation factor . 40
7.4.6 Internal arc fault test . 40
7.5 Sample tests .
...