EN 50708-2-1-2020 电力变压器 欧洲附加要求 第2-1部分：中型电力变压器.pdf

EN 50708-2-1:2020(E)ContentsEuropean foreword.Introduction.1 Scope.52 Normative references.53 Terms and definitions.54 Service conditions.55 Rating and general requirements.55.1 General.55.1.1 Highest voltages for equipment for winding with Um 1,1 kV.55.1.2 Rated voltage for winding with Um s 1,1 kV.55.1.3 Tapping.65.1.4 Connection designations for three phase transformers.6 5.2 Energy Performance5.2.1 General.65.2.2 Transformers with special requirements.96 Rating plate.117 Tolerances during factory acceptance tests.118 Tests.119 Accessories and fittings1110 Capitalization losses.1111 Transformers overhaul.11Annex ZZ(informative)Relationship between this European Standard and the ecodesignrequirements of Commission Regulation(EU)No 548/2014 of 21 May 2014 and itsamendment No 2019/1783 of 1 October 2019 on implementing Directive 2009/125/ECof the European Parliament and of the Council with regard to small,medium and largepower transformers aimed to be covered.122EN 50708-2-1:2020(E)IntroductionFor the purpose of this document,the requirements of the general EN 50708-1-1:2020 apply.This document contains particular requirements for specific transformers or transformer applications,which are based on the requirements of the general EN 50708-1-1:2020.This document should be considered in conjunction with the requirements of the general parts.The particular requirements of the different subparts of EN 50708 supplement,modify or replacecertain requirements of the general parts of EN 50708-1 and/or EN 50708-1-X being valid at the timeof publication of this document.The absence of references to the exclusion of a part or a clause of ageneral part means that the corresponding clauses of the general part are applicable(undatedreference).Requirements of other-X parts with X greater than 1 being eventually relevant for cases covered bythis document also apply.This document could therefore also supplement,modify or replace certainof these requirements valid at the time of publication of this document.The main clause numbering of each part follows the pattern and corresponding references ofEN 50708-1-1:2020.The numbers following the particular number of this document are those of thecorresponding parts,or clauses of the other parts of the EN 50708 series,valid at the time ofpublication of this document,as indicated in the normative references of this document(datedreference).In the case where new or amended general parts with modified numbering were published after thesubpart was issued,the clause numbers referring to a general part in subparts might no longer alignwith the latest edition of the general part.Dated references should be observed.4