Mineral insulating oils in electrical equipment - Supervision and maintenance guidance

IEC 60422:2013 gives guidance on the supervision and maintenance of the quality of the insulating oil in electrical equipment. This International Standard is applicable to mineral insulating oils, originally supplied conforming to IEC 60296, in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable and where the normal operating conditions specified in the equipment specifications apply. This International Standard is also intended to assist the power equipment operator to evaluate the condition of the oil and maintain it in a serviceable condition. It also provides a common basis for the preparation of more specific and complete local codes of practice. The standard includes recommendations on tests and evaluation procedures and outlines methods for reconditioning and reclaiming oil and the decontamination of oil contaminated with PCBs. This fourth edition cancels and replaces the third edition, published in 2005, and constitutes a technical revision. The main changes with respect to the previous edition are as follows: - This new edition represents a major revision of the third edition, in order to bring in line this standard with latest development of oil condition monitoring, containing new limits for oil parameters, suggested corrective actions in the tables and new test methods. - The action limits for all oil tests have been revised and changes made where necessary to enable users to use current methodology and comply with requirements and regulations affecting safety and environmental aspects. - In addition, this standard incorporates changes introduced in associated standards since the third edition was published.

Isolieröle auf Mineralölbasis in elektrischen Betriebsmitteln - Leitlinie zur Überwachung und Wartung

Huiles minérales isolantes dans les matériels électriques - Lignes directrices pour la maintenance et la surveillance

La CEI 60422:2013 donne les lignes directrices pour la surveillance et la maintenance de la qualité des huiles isolantes dans les appareils électriques. La présente norme est applicable aux huiles minérales isolantes, satisfaisant à l'origine aux exigences de la CEI 60296, et présentes dans les transformateurs, appareillages de connexion et appareils électriques similaires, pour lesquels la prise d'échantillons d'huile est possible, et auxquels les conditions normales d exploitation prévues dans les spécifications du matériel sont appliquées. Cette norme est également destinée à aider le personnel d'exploitation à évaluer l'état de l'huile des matériels et à la maintenir en état d'être utilisée. Elle fournit également une base commune à l'élaboration de codes de pratique locaux plus complets et plus spécifiques. La norme inclut des recommandations sur les essais et les procédures d'évaluation, et indique des procédés de retraitement et de régénération de l'huile, et de décontamination de l'huile contaminée par les PCB. Cette quatrième édition annule et remplace la troisième édition, publiée en 2005, et constitue une révision technique. Les modifications principales par rapport à l'édition précédente sont les suivantes: - Cette nouvelle édition représente une révision importante de la troisième édition, qui a pour objet d'aligner la présente norme sur les derniers développements de la surveillance de l'état de l'huile, contenant de nouvelles limites pour les paramètres relatifs aux huiles, les actions correctives suggérées dans les tableaux et de nouvelles méthodes d'essais. - Les limites d'action pour tous les essais effectués sur les huiles ont été mises à jour et des changements ont été faits lorsque c'était nécessaire pour permettre à des utilisateurs d'employer la méthodologie courante et de se conformer aux exigences et aux règlements affectant la sécurité et les aspects environnementaux. - Cette norme incorpore, également, les modifications introduites dans les normes associées depuis que la troisième édition a été publiée.

Mineralna izolacijska olja v električni opremi - Napotki za nadzorovanje in vzdrževanje

Ta mednarodni standard podaja napotke za nadzorovanje in vzdrževanje kakovosti izolacijskih olj v električni opremi. Ta standard se uporablja za mineralna izolacijska olja, originalno dobavljena v skladu s standardom IEC 60296, v transformatorjih, stikalnih napravah in drugih električnih napravah, kjer je vzorčenje olj smiselno in kjer veljajo običajni pogoji delovanja, ki so navedeni v specifikaciji opreme. Cilj tega standarda je tudi, da upravljavcu z električno opremo omogoča, da oceni stanje olja in ga vzdržuje v uporabnem stanju. Podaja tudi skupno osnovo za pripravo bolj specifičnih in popolnih lokalnih kodeksov ravnanja. Ta standard vključuje priporočila o postopkih preskušanja in ocenjevanja ter podaja metode za obnavljanje in ponovno uporabo olj. Podaja tudi metode za dekontaminacijo olj, ki so onesnažena s polikloriranimi bifenili. OPOMBA Nadzor stanja električne opreme (npr. z analizo raztopljenih plinov, furanskih spojin ali z drugimi sredstvi) ne spada v področje uporabe tega standarda.

General Information

Status
Published
Publication Date
02-May-2013
Withdrawal Date
13-Feb-2016
Current Stage
6060 - Document made available - Publishing
Start Date
03-May-2013
Completion Date
03-May-2013

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SLOVENSKI STANDARD
01-julij-2013
0LQHUDOQDL]RODFLMVNDROMDYHOHNWULþQLRSUHPL1DSRWNL]DQDG]RURYDQMHLQ
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Mineral insulating oils in electrical equipment - Supervision and maintenance guidance
Richtlinien zur Überwachung und Wartung von Isolierölen auf Mineralölbasis in
elektrischen Betriebsmitteln
Huiles minérales isolantes dans les matériels électriques - Lignes directrices pour la
maintenance et la surveillance
Ta slovenski standard je istoveten z: EN 60422:2013
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 60422
NORME EUROPÉENNE
May 2013
EUROPÄISCHE NORM
ICS 29.040.10 Supersedes EN 60422:2006

English version
Mineral insulating oils in electrical equipment -
Supervision and maintenance guidance
(IEC 60422:2013)
Huiles minérales isolantes dans les Isolieröle auf Mineralölbasis in
matériels électriques - elektrischen Betriebsmitteln -
Lignes directrices pour la maintenance et Leitlinie zur Überwachung und Wartung
la surveillance (IEC 60422:2013)
(CEI 60422:2013)
This European Standard was approved by CENELEC on 2013-02-14. 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

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60422:2013 E
Foreword
The text of document 10/894/FDIS, future edition 4 of IEC 60422, prepared by IEC TC 10 "Fluids for
electrotechnical applications" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 60422:2013.
The following dates are fixed:
• latest date by which the document has (dop) 2013-11-14
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-02-14
• latest date by which the national
standards conflicting with the

document have to be withdrawn
This document supersedes EN 60422:2006.
latest development of oil condition monitoring, containing new limits for oil parameters, suggested
corrective actions in the tables and new test methods.

The action limits for all oil tests have been revised and changes made where necessary to enable users
to use current methodology and comply with requirements and regulations affecting safety and
environmental aspects.
In addition, EN 60422:2013 incorporates changes introduced in associated standards since
EN 60422:2006 was published.
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 60422:2013 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60567 NOTE  Harmonised as EN 60567.
IEC 60599 NOTE  Harmonised as EN 60599.
IEC 61198 NOTE  Harmonised as EN 61198.
ISO 12185 NOTE  Harmonised as EN ISO 12185.

- 3 - EN 60422:2013
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

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 δ)
and d.c. resistivity
IEC 60296 2012 Fluids for electrotechnical applications - EN 60296 2012
Unused mineral insulating oils for
transformers and switchgear
IEC 60475 - Method of sampling insulating liquids EN 60475 -

IEC 60666 2010 Detection and determination of specified EN 60666 2010
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
stability
IEC 61619 - Insulating liquids - Contamination by EN 61619 -
polychlorinated biphenyls (PCBs) - Method of
determination by capillary column gas
chromatography
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
IEC 62697-1 2012 Test method for quantitative determination of EN 62697-1 2012
corrosive sulfur compounds in unused and
used insulating liquids -
Part 1: Test method for quantitative
determination of dibenzyldisulfide (DBDS)

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

Publication Year Title EN/HD Year
ISO 2049 - Petroleum products - Determination of colour - -
(ASTM scale)
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 4406 1999 Hydraulic fluid power - Fluids - Method for - -
coding the level of contamination by solid
particles
ASTM D971 - Standard test method for interfacial tension of - -
oil against water by the ring method

ASTM D1275 2006 Standard test method for corrosive sulfur in - -
electrical insulating oils
DIN 51353 - Testing of insulating oils; detection of - -
corrosive sulfur; silver strip test

IEC 60422 ®
Edition 4.0 2013-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Mineral insulating oils in electrical equipment – Supervision and maintenance

guidance
Huiles minérales isolantes dans les matériels électriques – Lignes directrices

pour la maintenance et la surveillance

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 29.040.10 ISBN 978-2-83220-560-0

– 2 – 60422  IEC:2013
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Properties and deterioration/degradation of oil . 10
5 Oil tests and their significance . 11
5.1 General . 11
5.2 Colour and appearance . 12
5.3 Breakdown voltage . 12
5.4 Water content . 12
5.4.1 General . 12
5.4.2 Water in oil . 12
5.4.3 Water content in the oil/paper-system . 14
5.4.4 Interpretation of results. 15
5.5 Acidity . 15
5.6 Dielectric dissipation factor (DDF) and resistivity . 15
5.7 Inhibitor content and oxidation stability . 18
5.7.1 Oxidation stability . 18
5.7.2 Monitoring of uninhibited oils . 18
5.7.3 Monitoring of inhibited oils . 18
5.8 Sediment and sludge . 18
5.9 Interfacial tension (IFT) . 19
5.10 Particle count . 19
5.11 Flash point . 19
5.12 Compatibility of insulating oils . 20
5.13 Pour point . 20
5.14 Density . 20
5.15 Viscosity. 20
5.16 Polychlorinated biphenyls (PCBs) . 21
5.17 Corrosive sulphur . 21
5.18 Dibenzyl disulphide (DBDS) . 22
5.19 Passivator . 22
6 Sampling of oil from equipment . 22
7 Categories of equipment . 23
8 Evaluation of mineral insulating oil in new equipment . 23
9 Evaluation of oil in service . 24
9.1 General . 24
9.2 Frequency of examination of oils in service . 25
9.3 Testing procedures . 26
9.3.1 General . 26
9.3.2 Field tests. 26
9.3.3 Laboratory tests .
...

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