EN IEC 60076-25 EUROPEANSTANDARD NORME EUROPEENNE EUROPAISCHE NORM March 2023 ICS 29.180 English Version Power transformers - Part 25: Neutral grounding resistors (IEC 60076-25:2023) Transformateurs de puissance - Partie 25: Résistances de Leistungstransformatoren -Teil 25: Neutrale mise a la terre du neutre Erdungswiderstande (IEC 60076-25:2023) (IEC 60076-25:2023) This European Standard was approved by CENELEC on 2023-03-30. 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 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, Turkiye and the United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comite Européen de Normalisation Electrotechnique Europaisches Komitee fuir Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels Ref. No.EN IEC 60076-25:2023 E EN IEC 60076-25:2023 (E) European foreword The text of document 14/1097/FDIS, future edition 1 of IEC 60076-25, prepared by IEC/TC 14 "Power transformers" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 60076-25:2023. The following dates are fixed: (dop) 2023-12-30 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or by endorsement latest date by which the national standards conflicting with the (dow)2026-03-30 document have to be withdrawn Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.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 complete listing of these bodies can be found on the CENELEC website. Endorsement notice The text of the International Standard IEC 60076-25:2023 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 60068-3-3NOTE Approved as EN IEC 60068-3-3 IEC 60071-1 NOTE Approved as EN IEC 60071-1 IEC 60076-1 NOTE Approved as EN 60076-1 IEC 60664-1 NOTE Approved as EN IEC 60664-1 IEC 62271-1 NOTE Approved as EN 62271-1 2 EN IEC 60076-25:2023 (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 relevant EN/HD applies. NOTE2Up-to-date informationonthelatestversions ofthe EuropeanStandards listed inthis annexis available here: www.cencenelec.eu. Publication Year Title EN/HD Year IEC 60060-1 2010 High-voltage test techniques - Part 1: General EN 60060-1 2010 definitions and test requirements IEC 60071-2 Insulation co-ordination - Part 2: Application EN IEC 60071-2 guidelines IEC 60076-3 2013 Power transformers - Part 3: Insulation levels, 2013 EN60076-3 d