EN IEC 60422 EUROPEANSTANDARD NORME EUROPEENNE EUROPAISCHE NORM August 2024 ICS29.040.10 Supersedes EN 60422:2013 English Version Mineral insulating oils in electrical equipment - Supervision and maintenance guidance (IEC 60422:2024) Huiles minerales isolantes dans les materiels electriques - Isolierole auf Mineralolbasis in elektrischen Betriebsmitteln Leitlinie zur Uberwachung und Wartung Lignes directrices pour lamaintenance et la surveillance (IEC 60422:2024) (IEC 60422:2024) This European Standard was approved by CENELEC on 2024-08-22. 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 ManagementCentreortoanyCENELECmember. 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 membersare the national electrotechnical committees of Austria,Belgium,Bulgaria,Croatia, Cyprus,theCzechRepublic 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, Turkiye and the United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comite Européen de Normalisation Electrotechnique Europaisches Komitee fur Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels Ref.No.ENIEC60422:2024E EN IEC 60422:2024 (E) European foreword The text of document 10/1233/FDIS, future edition 5 of IEC 60422, prepared by TC 10 "Fluids for electrotechnical applications" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 60422:2024. The following dates are fixed: latest date by which the document has to be implemented at national (dop) 2025-05-22 level by publication of an identical national standard or by endorsement latest date by which the national standards conflicting the (dow) 2027-08-22 document have to be withdrawn This document supersedes EN 60422:2013 and all of its amendments and corrigenda (if any) Attention is drawn to the possibility that some of the elements of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 Any feedback and questions on this document should be directed to the users' national committee. A completelistingofthesebodiescanbefoundontheCENELECwebsite. Endorsement notice The text of the International Standard IEC 60422:2024 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 standard indicated: IEC 60567 NOTE Approved as EN IEC 60567 NOTE IEC60599 Approved as EN IEC 60599 IEC 61198 NOTE Approved as EN 61198 NOTE IEC61620 Approved as EN 61620 2 EN IEC 60422:2024 (E) 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. the relevantEN/HD applies. NOTE2Up-to-date informationonthelatest versionsofthe EuropeanStandards listed inthis annexis available here: www.cencenelec.eu Publication Title EN/HD Year Year IEC 60156 Insulating liquids - Determination of the EN 60156 breakdown voltage at power frequency - Test method IEC 60247 Insulating liquids - Measurement of relati