EN IEC 60475:2022

SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN 60475:2012
Metoda vzorčenja izolacijskih tekočin
Method of sampling insulating liquids
Verfahren zur Probennahme von Isolierflüssigkeiten
Méthode d'échantillonnage des liquides isolants
Ta slovenski standard je istoveten z: EN IEC 60475:2022
ICS:
29.040.01 Izolacijski fluidi na splošno Insulating fluids in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60475

NORME EUROPÉENNE
EUROPÄISCHE NORM July 2022
ICS 29.040.10 Supersedes EN 60475:2011
English Version
Method of sampling insulating liquids
(IEC 60475:2022)
Méthode d'échantillonnage des liquides isolants Verfahren zur Probennahme von Isolierflüssigkeiten
(IEC 60475:2022) (IEC 60475:2022)
This European Standard was approved by CENELEC on 2022-06-29. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60475:2022 E
European foreword
The text of document 10/1163/FDIS, future edition 3 of IEC 60475, prepared by IEC/TC 10 "Fluids for
electrotechnical applications" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60475:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-03-29
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-06-29
document have to be withdrawn
This document supersedes EN 60475:2011 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60475:2022 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 are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60567 2011 Oil-filled electrical equipment - Sampling of EN 60567 2011
gases and analysis of free and dissolved
gases - Guidance
IEC 60970 - Insulating liquids - Methods for counting EN 60970 -
and sizing particles
IEC 60475 ®
Edition 3.0 2022-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Method of sampling insulating liquids
Méthode d’échantillonnage des liquides isolants
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.040.10 ISBN 978-2-8322-3484-6
– 2 – IEC 60475:2022 © IEC 2022
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General principles for the sampling of insulating liquids . 7
4.1 New insulating liquids in delivery containers . 7
4.1.1 Place of sampling . 7
4.1.2 Quantity of sample to be taken . 7
4.1.3 Sampling equipment . 7
4.1.4 Sampling procedure . 11
4.2 Sampling of oil from oil-filled equipment . 13
4.2.1 General remarks . 13
4.2.2 Sampling of oil by syringe . 19
4.2.3 Sampling of oil by ampoule . 20
4.2.4 Sampling of oil by flexible metal bottles . 21
4.2.5 Sampling of oil by glass and rigid metal bottles . 22
4.2.6 Sampling of oil by plastic bottles . 23
4.3 Storage and transportation of samples . 23
4.4 Labelling of samples . 23
Annex A (informative) Procedure for sampling at intermediate levels (making up of the
average sample) . 25
A.1 Use of the thief dipper . 25
A.2 Use of the pipette . 25
A.3 Use of the siphon . 25
A.4 General remark . 25
Annex B (informative) Procedure for testing the integrity of the syringes . 26
Annex C (informative) Procedure for sampling oil from bushings . 27
Bibliography . 29

Figure 1 – Thief dipper . 8
Figure 2 – Cream dipper . 9
Figure 3 – Pipette . 10
Figure 4 – Siphon . 10
Figure 5 – Sampling of oil by syringe . 15
Figure 6 – Sampling of oil by ampoule . 16
Figure 7 – Sampling of oil by bottle . 17

Table 1 – Types of samples of new insulating liquids . 11
Table 2 – Sample containers for oil tests . 18
Table 3 – Information required on oil sample labels . 24

IEC 60475:2022 © IEC 2022 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
METHOD OF SAMPLING INSULATING LIQUIDS

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
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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.
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6) All users should ensure that they have the latest edition of this publication.
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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
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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.
IEC 60475 has been prepared by IEC technical committee 10: Fluids for electrotechnical
applications. It is an International Standard.
This third edition cancels and replaces the second edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of a new Annex C on sampling of oil from bushings, at the request of IEC
subcommittee 36A, in order to transfer to IEC 60475 the corresponding contents of
IEC TR 61464 relating to oil sampling from bushings;
b) deletion of NOTE 2 in 4.2.1.2.

– 4 – IEC 60475:2022 © IEC 2022
The text of this International Standard is based on the following documents:
Draft Report on voting
10/1163/FDIS 10/1173/RVD
Full information on the voting for its approval can be found in the report on voting ind
...