Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgear

NEW! IEC 60296:2012 is now available as IEC Standards+ 60296:2012 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60296:2012 is applicable to specifications and test methods for unused mineral insulating oils. It applies to oil intended for use in transformers, switchgear and similar electrical equipment in which oil is required for insulation and heat transfer. This edition includes the following significant technical changes with respect to the previous edition: - specifications for corrosive sulphur compounds that can lead to copper sulphide deposition in transformers (in non-passivated and passivated oils); - definitions of additives in oil; and - re-insertion of a missing note on oxidation.

Flüssigkeiten für elektrotechnische Anwendungen - Neue Isolieröle auf Mineralölbasis für Transformatoren und Schaltgeräte

Fluides pour applications électrotechniques - Huiles minérales isolantes neuves pour transformateurs et appareillages de connexion

NEW! La CEI 60296:2012 est maintenant disponible sous forme de IEC Standards+ 60296:2012 qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente. La CEI 60296:2012 s'applique aux spécifications et méthodes d'essais pour les huiles minérales isolantes neuves. Elle s'applique à l'huile destinée à l'utilisation dans les transformateurs, disjoncteurs et matériels électriques analogues, dans lesquels l'huile est nécessaire comme fluide isolant et caloporteur. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - des spécifications pour les composés soufrés corrosifs qui peuvent entraîner un dépôt de sulfure de cuivre à l'intérieur des transformateurs (dans les huiles non-passivées et passivées); - les définitions d'additifs dans l'huile; et - la ré-insertion d'une note manquante concernant l'oxydation.

Tekočine za elektrotehniko - Nerabljena mineralna izolacijska olja za transformatorje in omrežne stikalne naprave

Specifikacija sprejemljivosti, dodatki, prebojna napetost, razvrstitev, jedkost, jedke snovi, definicije, dobavni pogoji, gostota, dielektrik, faktor razsipanja, elektroinženiring, elektroizolacijski materiali, plamenišče, goriva, odvajanje toplote, identifikacija, izolacijska olja, mejne vrednosti (matematika), merjenje, merilne tehnike, mineralna olja, olja, oksidacija, točka tečenja, lastnosti, čistoča, upornost, metode vzorčenja, saponifikacijsko število, specifikacija (odobritev), specifikacije, stabilnost, žveplo, stikalna naprava, preskušanje, transformatorsko olje, transformatorji, nerabljeno, viskoznost

General Information

Status
Withdrawn
Publication Date
19-Apr-2012
Withdrawal Date
25-Mar-2015
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
31-Jul-2023
Completion Date
31-Jul-2023

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SLOVENSKI STANDARD
01-julij-2012
7HNRþLQH]DHOHNWURWHKQLNR1HUDEOMHQDPLQHUDOQDL]RODFLMVNDROMD]D
WUDQVIRUPDWRUMHLQRPUHåQHVWLNDOQHQDSUDYH
Fluids for electrotechnical applications - Unused mineral insulating oils for transformers
and switchgear
Flüssigkeiten für elektrotechnische Anwendungen - Neue Isolieröle für Transformatoren
und Schaltgeräte
Fluides pour applications électrotechniques - Huiles minérales isolantes neuves pour
transformateurs et appareillages de connexion
Ta slovenski standard je istoveten z: EN 60296:2012
ICS:
29.040.10 Izolacijska olja Insulating oils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60296
NORME EUROPÉENNE
April 2012
EUROPÄISCHE NORM
ICS 29.040 Supersedes EN 60296:2004 + corr. Sep.2004

English version
Fluids for electrotechnical applications -
Unused mineral insulating oils for transformers and switchgear
(IEC 60296:2012)
Fluides pour applications Flüssigkeiten für elektrotechnische
électrotechniques - Anwendungen -
Huiles minérales isolantes neuves pour Neue Isolieröle auf Mineralölbasis für
transformateurs et appareillages de Transformatoren und Schaltgeräte
connexion (IEC 60296:2012)
(CEI 60296:2012)
This European Standard was approved by CENELEC on 2012-03-26. 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, 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 60296:2012 E
Foreword
The text of document 10/878/FDIS, future edition 4 of IEC 60296, prepared by IEC/TC 10 "Fluids for
electrotechnical applications" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 60296:2012.
The following dates are fixed:
(dop) 2012-12-26
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2015-03-26
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60296:2004 + corrigendum September 2004.
– specifications for corrosive sulphur compounds that can lead to copper sulphide deposition in
transformers (in non-passivated and passivated oils);
– definitions of additives in oil; and
– re-insertion of a missing note on oxidation.
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.
Endorsement notice
The text of the International Standard IEC 60296:2012 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60867 NOTE  Harmonized as EN 60867.

- 3 - EN 60296:2012
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.
Publication Year Title EN/HD Year

- - Surface active agents - Determination of EN 14210 -
interfacial tension of solutions of surface
active agents by the stirrup or ring method

IEC 60076-2 - Power transformers - EN 60076-2 -
Part 2: Temperature rise for liquid-immersed
transformers
IEC 60156 - Insulating liquids - Determination of the EN 60156 -
breakdown voltage at power frequency - Test
method
IEC 60247 - Insulating liquids - Measurement of relative EN 60247 -
permittivity, dielectric dissipation factor (tan d)
and d.c. resistivity
IEC 60422 - Mineral insulating oils in electrical equipment - EN 60422 -
Supervision and maintenance guidance

IEC 60475 - Method of sampling insulating liquids EN 60475 -

IEC 60628 1985 Gassing of insulating liquids under electrical HD 488 S1 1987
stress and ionization
IEC 60666 - Detection and determination of specified EN 60666 -
additives in mineral insulating oils

IEC 60814 - Insulating liquids - Oil-impregnated paper and EN 60814 -
pressboard - Determination of water by
automatic coulometric Karl Fischer titration

IEC 60970 - Insulating liquids - Methods for counting and EN 60970 -
sizing particles
IEC 61125 1992 Unused hydrocarbon-based insulating liquids -EN 61125 1993
+ corr. September 1992 Test methods for evaluating the oxidation + A1 2004
+ A1 2004 stability
IEC 61198 - Mineral insulating oils - Methods for the EN 61198 -
determination of 2-furfural and related
compounds
IEC 61619 - Insulating liquids - Contamination by EN 61619 -
polychlorinated biphenyls (PCBs) - Method of
determination by capillary column gas
chromatography
IEC 61620 - Insulating liquids - Determination of the EN 61620 -
dielectric dissipation factor by measurement of
the conductance and capacitance - Test
method
IEC 61868 - Mineral insulating oils - Determination of EN 61868 -
kinematic viscosity at very low temperatures

Publication Year Title EN/HD Year
IEC 62021-1 - Insulating liquids - Determination of acidity - EN 62021-1 -
Part 1: Automatic potentiometric titration

IEC 62021-2 - Insulating liquids - Determination of acidity - EN 62021-2 -
Part 2: Colourimetric titration

IEC 62535 2008 Insulating liquids - Test method for detection EN 62535 2009
of potentially corrosive sulphur in used and
unused insulating oil
ISO 2719 - Determination of flash point - Pensky-Martens EN ISO 2719 -
closed cup method
ISO 3016 - Petroleum products - Determination of pour - -
point
ISO 3104 - Petroleum products - Transparent and opaque EN ISO 3104 -
liquids - Determination of kinematic viscosity
and calculation of dynamic viscosity

ISO 3675 - Crude petroleum and liquid petroleum EN ISO 3675 -
products - Laboratory determination
of density - Hydrometermethod
ISO 12185 - Crude petrolelum and petroleum products - EN ISO 12185 -
Determination of density - Oscillating U-tube
method
ISO 14596 - Petroleum products - Determination of sulfur EN ISO 14596 -
content - Wavelength-dispersive X-ray
fluorescence spectrometry
ASTM D971 - Standard test method for interfacial tension of - -
oil against water by the ring method

ASTM D7150 - Standard test method for the determination of - -
gassing characteristics of insulating liquids
under thermal stress at low temperature

DIN 51353 - Testing of insulating oils; detection of - -
corrosive sulfur; silver strip test

IP 346 - Determination of polycyclic aromatics in - -
lubricant base oils and asphaltene free
petroleum fractions - Dimethylsulfoxide
refractive method
IP 373 - Determination of the sulphur content of light - -
and middle distillates - Oxidative
microcoulometry
- 5 - EN 60296:2012
Annex ZB
(normative)
Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over a long
period, e.g. climatic conditions, electrical earthing conditions.

NOTE  If it affects harmonization, it forms part of the European Standard / Harmonization Document.

For the countries in which the relevant special national conditions apply these provisions are normative,
for other countries they are informative.

Clause Special national condition
7.1 Austria
The restricted limits of Chapter 7.1 “Higher oxidation stability and low sulphur content” are
to be followed as general specification for oxidation stability (See Table 2).
Because of exposed geographical location and cold weather conditions (snow)
transformers are not always accessible for service, which sometimes leads to unforeseen
longer service intervals and therefore higher oxidation stability of transformer oil is
required.
For the same reason and to have an additional criterion for evaluation of oil quality,
Interfacial Tension (IFT) is to be used as a general requirement (Table 2, Footnote f)”
__________
IEC 60296 ®
Edition 4.0 2012-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fluids for electrotechnical applications – Unused mineral insulating oils for

transformers and switchgear
Fluides pour applications électrotechniques – Huiles minérales isolantes neuves

pour transformateurs et appareillages de connexion

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 29.040 ISBN 978-2-88912-928-7

– 2 – 60296 © IEC:2012
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Properties of oil . 10
4.1 Functional properties . 10
4.2 Refining and stability . 10
4.3 Performance . 10
4.4 Health, safety and environment (HSE) properties . 10
5 Classification, identification, general delivery requirements and sampling. 11
5.1 Classification . 11
5.1.1 Classes . 11
5.1.2 Antioxidant additive (inhibitor) content . 11
5.1.3 Lowest cold start energizing temperature (LCSET) . 11
5.2 Requirements . 11
5.3 Miscibility . 11
5.4 Identification and general delivery requirements . 11
5.5 Sampling . 12
6 Properties, their significance and test methods . 12
6.1 Viscosity. 12
6.2 Pour point . 12
6.3 Water content . 12
6.4 Breakdown voltage . 13
6.5 Dielectric dissipation factor (DDF) . 13
6.6 Appearance . 13
6.7 Acidity . 13
6.8 Interfacial tension (
...

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