548/2014 - Commission Regulation (EU) No 548/2014 of 21 May 2014 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to small, medium and large power transformers Harmonized Directive
Commission Regulation (EU) No 548/2014 implements Directive 2009/125/EC establishing ecodesign requirements for small, medium, and large power transformers with a minimum power rating of 1 kVA used in 50 Hz electricity transmission, distribution, and industrial applications. The regulation focuses on improving the energy efficiency of transformers to reduce energy consumption and environmental impact during use, identifying energy losses in operation as the most significant ecological concern. It excludes specific transformer types such as instrument transformers, rectifier transformers, railway transformers, and others with negligible energy-saving potential. Particular concessions apply to pole-mounted and voltage regulation transformers, with these exceptions to be phased out as technology advances. The regulation mandates staged energy efficiency improvements to allow manufacturers time to adapt, and requires product information and technical documentation for market surveillance. The Commission will review the regulation three years after entry into force to assess technological progress and consider expanding requirements. This measure aims to harmonize ecodesign standards across the EU, enhancing internal market efficiency while reducing electrical power losses and associated CO2 emissions.
Purpose
The Commission Regulation (EU) No 548/2014 implements Directive 2009/125/EC regarding ecodesign requirements specifically for power transformers. It aims to improve the energy efficiency and environmental performance of small, medium, and large power transformers used in 50 Hz electricity transmission and distribution networks or for industrial applications. The regulation focuses mainly on reducing energy consumption during the use phase of transformers, which represents the most significant environmental impact. By setting harmonized minimum efficiency standards across the EU, the regulation supports the internal market's efficient functioning and helps reduce CO2 emissions linked to transformer losses.
Key obligations
- Power transformers with a minimum power rating of 1 kVA must comply with the ecodesign requirements set out in Annex I of the regulation.
- The regulation establishes definitions and classifications for small, medium, and large power transformers, including different types such as liquid-immersed and dry-type transformers.
- Requirements apply irrespective of where the transformers are installed and do not depend on the application in which they are used.
- Specific exemptions exist for certain transformer types, including instrument transformers, transformers for rectifiers providing DC supply, transformers for railway systems, emergency installations, and several others specialized for offshore, mining, or underwater applications.
- Large power transformers may also be exempted if no technically feasible alternatives exist or if their replacement would involve disproportionate costs.
- Manufacturers must provide technical documentation as required by Directive 2009/125/EC to facilitate compliance checks.
- Conformity assessment must be conducted through internal design control or a management system procedure following Directive 2009/125/EC.
- National authorities must apply verification procedures detailed in Annex III for market surveillance.
- Specific concessions exist for pole-mounted transformers, including visible labeling "For pole-mounted operation only" to prevent misuse.
- Voltage Regulation Distribution Transformers receive temporary concessions that will phase out as technology matures.
- The Commission is required to conduct a review three years after entry into force to assess progress and consider possible updates to requirements.
Affected products and actors
- The regulation applies to power transformers with a power rating of at least 1 kVA used in Europe for electricity transmission, distribution, or industrial purposes at 50 Hz.
- Small power transformers: rated voltage up to 1.1 kV.
- Medium power transformers: rated voltage between 1.1 kV and 36 kV with power ratings between 5 kVA and less than 40 MVA.
- Large power transformers: rated voltage exceeding 36 kV with power rating of 5 kVA or more or power rating of 40 MVA or more regardless of voltage.
- Transformer manufacturers, importers, and distributors placing products on the EU market.
- National market surveillance authorities responsible for compliance checks and enforcement.
- End users purchasing transformers after the regulation's entry into force.
Implementation timeline
- The regulation entered into force 20 days after its publication in the Official Journal of the European Union, dated 21 May 2014.
- Ecodesign requirements apply to transformers purchased after the entry into force.
- A staged approach to the entry into force of specific ecodesign requirements allows manufacturers time to redesign products.
- A mandatory review by the European Commission must take place no later than three years after entry into force (i.e., by mid-2017), to evaluate technological progress and determine necessary updates to the regulation.
This regulation is binding and directly applicable in all EU Member States, ensuring a unified approach to improving transformer energy efficiency and contributing to EU climate and energy goals.
This Regulation establishes ecodesign requirements for power transformers with a minimum power rating of 1 kVA used in 50 Hz electricity transmission and distribution networks or for industrial applications. It applies to small, medium, and large power transformers placed on the market or put into service within the EU. However, it excludes transformers designed for specific applications such as instrument transformers for measuring instruments, transformers for DC supply with rectifiers, furnace-connected transformers, offshore and floating offshore transformers, emergency installations, railway feeding systems, earthing transformers, traction transformers on rolling stock, motor starting transformers, testing transformers, welding transformers, explosion-proof and underground mining applications, deep water submerged transformers, medium voltage interface transformers up to 5 MVA, and certain large power transformers used as like-for-like replacements or where no technically feasible alternatives exist to meet efficiency requirements. The Regulation applies only to transformers purchased after its entry into force and aims to improve energy efficiency and reduce environmental impact throughout the internal market.
Die Verordnung (EU) Nr. 548/2014 legt ökodesignbezogene Anforderungen für Kleinleistungs-, Mittelleistungs- und Großleistungstransformatoren fest, die in 50-Hz-Stromnetzen oder industriellen Anwendungen verwendet werden. Ziel ist die Verbesserung der Energieeffizienz und die Reduzierung von Energieverlusten während der Nutzungsphase, da diese den größten Umweltaspekt darstellen. Einige Transformatorarten wie Messwandler, Notfalltransformatoren oder Transformatoren für spezielle Anwendungen sind ausgenommen. Die Verordnung gilt für nach ihrem Inkrafttreten beschaffte Geräte und umfasst Anforderungen an Energieverluste sowie an die Kennzeichnung, insbesondere bei speziell für Freileitungsmasten konzipierten Transformatoren. Hersteller müssen technische Unterlagen bereitstellen, und die Konformitätsbewertung erfolgt gemäß der Richtlinie 2009/125/EG. Die Verordnung sieht eine Überprüfung drei Jahre nach Inkrafttreten vor, um technische Fortschritte und die Angemessenheit der Anforderungen zu bewerten. Insgesamt trägt die Verordnung zur Harmonisierung des Binnenmarkts und zur Förderung umweltfreundlicher Transformatorentechnologien bei.
Zweck
Die Verordnung (EU) Nr. 548/2014 setzt die Ökodesign-Richtlinie 2009/125/EG im Bereich der Kleinleistungs-, Mittelleistungs- und Großleistungstransformatoren um. Ziel ist es, durch Festlegung verbindlicher energieeffizienter Mindestanforderungen den Energieverbrauch und die damit verbundenen CO2-Emissionen während der Nutzungsphase dieser Transformatoren zu reduzieren. Dabei steht die Harmonisierung der Anforderungen innerhalb des Binnenmarktes im Vordergrund, um Umweltauswirkungen zu minimieren und gleichzeitig wirtschaftlichen Fortschritt durch Innovationen im Bereich energieeffizienter Technologien zu fördern.
Wesentliche Verpflichtungen
- Erfüllung der Ökodesign-Anforderungen: Kleinleistungs-, Mittel- und Großleistungstransformatoren müssen die in Anhang I der Verordnung festgelegten energiebezogenen Mindestanforderungen erfüllen.
- Konformitätsbewertung: Hersteller müssen die Konformität ihrer Produkte durch interne Entwurfskontrolle oder durch ein Managementsystem gemäß Anhängen IV und V der Richtlinie 2009/125/EG nachweisen.
- Produktkennzeichnung: Transformatoren, die speziell für den Betrieb an Freileitungsmasten bestimmt sind, müssen den gut sichtbaren Hinweis „Nur zum Betrieb an Freileitungsmasten“ tragen, um Missbrauch zu verhindern.
- Technische Unterlagen: Hersteller haben die erforderlichen technischen Angaben zur Energieeffizienz und Konformität bereitzustellen, um die Marktüberwachung und Kontrolle zu erleichtern.
- Marktaufsicht: Nationale Behörden der Mitgliedstaaten verwenden das definierte Überprüfungsverfahren (Anhang III), um die Einhaltung der Verordnung zu kontrollieren.
- Ausnahmen: Spezielle Transformatoren sind aufgrund ihrer besonderen Funktionen vom Anwendungsbereich der Verordnung ausgenommen (z. B. Prüf-, Schweißtransformatoren, Transformatoren für Offshore-Anwendungen, Notfallbetrieb, Eisenbahnversorgung, erdungstransformatoren sowie Transformatoren für explosionsgeschützte Bereiche).
Betroffene Produkte und Akteure
- Produkte: Die Verordnung gilt für feste Leistungstransformatoren mit einer Mindestnennleistung von 1 kVA, die an 50 Hz Stromübertragungs- und -verteilungsnetze oder in der Industrie angeschlossen sind. Sie differenziert zwischen Kleinleistungs- (bis 1,1 kV), Mittelleistungs- (über 1,1 kV bis 36 kV und 5 kVA bis unter 40 MVA) und Großleistungstransformatoren (mehr als 36 kV oder mindestens 40 MVA).
- Ausgeschlossene Transformatoren: Diverse spezielle Transformatoren sind ausgenommen, etwa Messwandler, Transformatoren mit Unterspannungswicklungen, Transformatoren für Ofenbetrieb, Mittelspannungs-/Mittelspannungstransformatoren bis 5 MVA, Transformatoren für Notfälle sowie Transformatoren, für die keine technisch realisierbaren Alternativen zur Erfüllung der Mindestanforderungen bestehen.
- Akteure: Hauptsächlich betroffen sind Hersteller, Importeure und Händler von Transformatoren sowie nationale Marktaufsichtsbehörden, die die Einhaltung kontrollieren müssen.
Umsetzungszeitraum
- Die Verordnung trat am 20. Tag nach der Veröffentlichung im Amtsblatt der Europäischen Union am 21. Mai 2014 in Kraft und gilt unmittelbar und verbindlich in allen Mitgliedstaaten der EU.
- Die Anforderungen gelten ausschließlich für Transformatoren, die nach Inkrafttreten der Verordnung beschafft wurden (Vertragsabschluss nach Inkrafttreten).
- Es ist eine stufenweise Einführung der Mindestanforderungen vorgesehen, um Herstellern ausreichend Zeit zur Anpassung ihrer Produkte zu geben und dabei kleine und mittlere Unternehmen zu berücksichtigen.
- Drei Jahre nach Inkrafttreten ist eine Überprüfung der Verordnung durch die Kommission vorgesehen, bei der der technische Fortschritt sowie die Wirksamkeit der Maßnahmen hinsichtlich weiterer Umweltaspekte und möglicher Anpassungen evaluiert werden.
Diese Verordnung trägt wesentlich dazu bei, den Energieverbrauch von Transformatoren in der EU zu senken und fördert damit die Ziele des EU-Umweltschutzes und der Energieeffizienz.
Die Verordnung (EU) Nr. 548/2014 legt Ökodesign-Anforderungen fest für Kleinleistungs-, Mittelleistungs- und Großleistungstransformatoren mit einer Mindestnennleistung von 1 kVA, die in mit 50 Hz betriebenen Stromübertragungs- und -verteilungsnetzen oder in industriellen Anwendungen verwendet werden. Sie gilt für Transformatoren, die nach Inkrafttreten der Verordnung beschafft werden. Ausgenommen sind Transformatoren, die speziell für bestimmte Anwendungen konstruiert sind, wie Messwandler, Transformatoren für Gleichrichterbetrieb, Ofenanschluss, Offshore-Anlagen, Notfallbetrieb, Eisenbahnversorgung, Erdungstransformatoren, Schweißtransformatoren, explosionsgeschützte und Untertageanwendungen, sowie Transformatoren für Tiefwasseranwendungen. Ebenso ausgenommen sind Mittelspannungs-Transformatoren bis 5 MVA sowie Großleistungstransformatoren, wenn technische Alternativen fehlen oder der Ersatz unverhältnismäßige Kosten verursacht. Die Verordnung dient der Harmonisierung der energieeffizienten Auslegung von Transformatoren im Binnenmarkt und umfasst Anforderungen an Energiesparpotenziale in der Nutzungsphase.
Le règlement (UE) n° 548/2014 établit des exigences d’écoconception pour les transformateurs de faible, moyenne et grande puissance utilisés dans les réseaux de transport et de distribution d’électricité à 50 Hz et pour des applications industrielles. Il s’appuie sur la directive 2009/125/CE visant à améliorer la performance énergétique des produits liés à l’énergie. L’étude préparatoire a montré que la consommation d’énergie lors de la phase d’utilisation est l’aspect environnemental le plus important pour ces transformateurs. Certaines catégories de transformateurs, en raison de leur fonction spécifique, sont exclues du champ d’application, tout comme des concessions sont accordées pour les transformateurs montés sur poteau ou ceux équipés de dispositifs de régulation de tension. Les exigences sont mises en œuvre progressivement pour permettre aux fabricants de s’adapter. Le règlement prévoit des procédures d’évaluation de conformité et de vérification pour la surveillance du marché. La Commission effectuera un réexamen au plus tard trois ans après l’entrée en vigueur afin d’adapter les exigences selon les avancées technologiques. Ce règlement est directement applicable dans tous les États membres à partir de sa publication.
Objet
Le Règlement (UE) n° 548/2014 établit des exigences en matière d’écoconception pour les transformateurs électriques de faible, moyenne et grande puissance. Il vise à réduire la consommation d’énergie durant la phase d’utilisation des transformateurs mis sur le marché ou mis en service. Ce règlement complète la directive 2009/125/CE en définissant des critères harmonisés au niveau européen afin d’améliorer l’efficacité énergétique des transformateurs destinés aux réseaux de transport et de distribution d’électricité (50 Hz) ainsi qu’aux applications industrielles.
Principales obligations
- Respect des exigences minimales d’écoconception définies en annexe I pour tous les transformateurs concernés.
- Fourniture d’informations techniques détaillées conformes aux annexes IV et V de la directive 2009/125/CE, afin de faciliter le contrôle de conformité.
- Apposition de la mention « réservé à une exploitation sur poteau » pour certains transformateurs conçus pour être montés sur poteaux électriques, afin de prévenir une mauvaise utilisation.
- Soumission à une procédure d’évaluation de conformité par contrôle interne de la conception ou par système de management (articles 4 et 5).
- Préservation des concessions réglementaires spécifiques pour certaines catégories de transformateurs, notamment ceux avec fonctions de régulation de tension, avec une disparition progressive prévue de ces concessions.
- La Commission s’engage à procéder à un réexamen du règlement dans un délai maximal de trois ans après son entrée en vigueur, tenant compte des évolutions technologiques et clarifiant certaines exemptions.
Produits et acteurs concernés
- Transformateurs visés :
- Transformateurs de faible puissance (tension ≤ 1,1 kV)
- Transformateurs de moyenne puissance (tension > 1,1 kV et ≤ 36 kV, puissance 5 kVA à 40 MVA)
- Transformateurs de grande puissance (tension > 36 kV et/ou puissance ≥ 40 MVA)
- Exclusions spécifiques :
- Transformateurs pour mesures, redresseurs, fours, applications maritimes, urgences, ferroviaires, démarrage de moteurs, soudage, exploitation minière et autres usages spécialisés.
- Transformateurs de grande puissance pour lesquels aucune solution techniquement faisable conforme au règlement n’existe, ou ceux destinés à un remplacement « à l’identique » où les coûts seraient disproportionnés.
- Les fabricants et fournisseurs de transformateurs sont les principaux responsables du respect des exigences.
- Les autorités nationales de surveillance du marché contrôlent la conformité selon les procédures définies.
Calendrier de mise en œuvre
- Le règlement est entré en vigueur le 20ème jour suivant sa publication au Journal officiel de l’Union européenne, soit le 10 juin 2014.
- Les exigences s’appliquent aux transformateurs achetés après cette date.
- Une mise en œuvre progressive des exigences est prévue, afin d’accommoder les contraintes techniques et économiques, notamment pour les petites et moyennes entreprises.
- Trois ans après l’entrée en vigueur, la Commission doit effectuer un réexamen intégral pour adapter les exigences selon les progrès technologiques et les besoins du marché.
Ce règlement contribue significativement à améliorer la performance énergétique du parc européen de transformateurs, estimée à une économie potentielle de 16,2 TWh par an en 2025, et à réduire les émissions de CO₂ associées (3,7 millions de tonnes). Il établit un cadre réglementaire clair et harmonisé afin de favoriser le développement de technologies plus efficaces au bénéfice de l’environnement et du marché unique.
Le règlement (UE) n° 548/2014 s'applique aux transformateurs d'une puissance minimale de 1 kVA utilisés dans les réseaux de transport et de distribution d'électricité à 50 Hz ou pour des applications industrielles. Il concerne la mise sur le marché ou la mise en service de transformateurs de faible, moyenne et grande puissance, achetés après son entrée en vigueur. Sont exclus du champ d'application les transformateurs spécialement conçus pour des usages spécifiques tels que les transformateurs de mesure, pour redresseurs, pour fours, pour applications marines, installations d'urgence, alimentations ferroviaires, mise à la terre, traction, démarrage de moteurs, tests, soudage, exploitation minière, immersion, transformateurs d'interface moyenne tension, ou les remplacements de transformateurs de grande puissance dans certains cas. Les exigences visent principalement l'amélioration de la performance et de l'efficacité énergétiques des transformateurs standards vendus sur le marché de l'Union.
Uredba Komisije (EU) št. 548/2014 določa zahteve za okoljsko primerno zasnovo transformatorjev z nazivno močjo najmanj 1 kVA, ki se uporabljajo v prenosnih in distribucijskih omrežjih s frekvenco 50 Hz ali v industriji. Namen uredbe je izboljšati energijsko učinkovitost transformatorjev in s tem prispevati k varstvu okolja ter učinkovitejšemu delovanju notranjega trga EU. Uredba zajema majhne, srednje in velike transformatorje, medtem ko ne velja za nekatere posebne vrste transformatorjev, kot so merilni, nizkonapetostni, varilni ali transformatorji za uporabo v eksplozivnih atmosferah. Za učinkovito izvajanje so določene metode ocene skladnosti in postopki tržnega nadzora. Prav tako uredba predvideva postopno uveljavitev zahtev za prilagoditev proizvajalcev, ob hkratnem upoštevanju stroškov za mala in srednja podjetja. Komisija bo uredbo najpozneje tri leta po začetku veljavnosti pregledala z vidika tehnološkega napredka in morebitnih izboljšav. Uredba je neposredno zavezujoča v vseh državah članicah EU.
Namen
Uredba Komisije (EU) št. 548/2014 določa zahteve za okoljsko primerno zasnovo (eco-design) majhnih, srednjih in velikih transformatorjev, ki se uporabljajo v prenosnih in distribucijskih omrežjih ter industriji. Cilj uredbe je izboljšati energetsko učinkovitost teh transformatorjev v fazi njihove uporabe, saj je poraba energije najpomembnejši okoljski vidik, medtem ko vplivi proizvodnje in uporabe surovin niso predmet tej uredbi. Uredba prispeva k učinkovitemu delovanju notranjega trga EU in zmanjševanju emisij CO2, zlasti skozi spodbujanje stroškovno učinkovitih izboljšav energetske učinkovitosti.
Ključne obveznosti
- Določitev minimalnih zahtev za energijsko učinkovitost majhnih, srednjih in velikih transformatorjev, kot so opredeljene v Prilogi I uredbe.
- Uporaba postopka notranjega nadzora snovanja ali sistema upravljanja za oceno skladnosti z zahtevami (člen 4).
- Zagotavljanje tehnične dokumentacije in informacij za namene preverjanja skladnosti ter nadzora trga, skladno z Direktivo 2009/125/ES.
- Uredba ne velja za transformatorje nabavljene pred začetkom veljavnosti uredbe.
- Nekatere kategorije transformatorjev so izvzete zaradi posebnih funkcij ali tehničnih razlogov; med njimi so merilni transformatorji, transformatorji za nizkonapetostno uporabo s usmerniki, transformatorji za železniške sisteme, varilni transformatorji, transformatorji za uporabo v nevarnih okoljih, potopni transformatorji ipd.
- Posebne regulativne koncesije so predvidene za transformatorje za montažo na steber in za srednje transformatorje z regulacijo napetosti.
- Proizvajalci morajo na vidnem mestu označiti transformatorje, namenjene za montažo na steber, z napisom „Samo za montažo na steber“.
- Komisija bo najpozneje tri leta po začetku veljavnosti uredbe opravila pregled za prilagoditev zahtev glede na tehnološki napredek.
Vplivani izdelki in akterji
- Uredba se nanaša na statistične transformatorje za pretvorbo izmenične napetosti in toka, z nominalno močjo najmanj 1 kVA, ki se uporabljajo v prenosnih in distribucijskih omrežjih s frekvenco 50 Hz ali v industriji.
- Transformatorji so razdeljeni v tri vrste: majhni (do 1,1 kV), srednji (od presega 1,1 kV do 36 kV in moči med 5 kVA in 40 MVA) in veliki (napetost nad 36 kV in moči nad 5 kVA ali moč nad 40 MVA ne glede na napetost).
- Izjeme vključujejo transformatorje za merilne naprave, nizkonapetostne transformatorje za usmernike, posebne industrijske in varnostne aplikacije, železniške aplikacije in druge navedene specifične primere.
- Proizvajalci, distributerji in uvozniki transformatorjev so odgovorni za skladnost proizvodov z zahtevami uredbe.
- Nacionalni organi so odgovorni za tržni nadzor in preverjanje skladnosti po postopkih iz uredbe.
Časovni okvir izvajanja
- Uredba začne veljati 20. dan po njeni objavi v Uradnem listu EU.
- Uveljavljena je neposredno in zavezujoče v vseh državah članicah, kar pomeni, da ni potreben nacionalni prenos v zakonodajo.
- Uredba velja samo za transformatorje, ki so bili nabavljeni po začetku veljavnosti uredbe.
- Komisija bo izvede pregled uredbe najpozneje tri leta po začetku veljavnosti, da oceni tehnične napredke in zahtevnost minimalnih zahtev ter možnost prilagoditev uredbe.
Uredba (EU) št. 548/2014 določa zahteve za okoljsko primerno zasnovo transformatorjev z nazivno močjo najmanj 1 kVA, ki se uporabljajo v prenosnih in distribucijskih omrežjih frekvence 50 Hz ali v industriji. Uredba velja za majhne, srednje in velike transformatorje, dane na trg ali v uporabo po začetku veljavnosti uredbe, ne glede na mesto namestitve. Izključeni so transformatorji, posebej zasnovani za merilne instrumente, nizkonapetostne usmernike, peči, morske in nujne objekte, železniške sisteme, varjenje, zaščito pred eksplozijami in podzemne rudnike ter druge posebne namene. Prav tako so iz uredbe izvzeti nekateri veliki transformatorji brez alternativ za izpolnitev učinkovitostnih zahtev in transformatorji za montažo na steber z določenimi omejitvami. Namen uredbe je izboljšati energijsko učinkovitost ter okoljsko primernost transformatorjev v okviru notranjega trga EU.
General Information
This document applies to all power transformers in scope of TC 14.
- Standard9 pagesEnglish languagee-Library read for1 day
This document applies to all power transformers in scope of TC 14.
- Standard9 pagesEnglish languagee-Library read for1 day
TC - Correction of technical errors
- Corrigendum1 pageEnglish languagee-Library read for1 day
TC - Correction of technical errors
- Corrigendum1 pageEnglish languagee-Library read for1 day
TC - Correction of technical errors
- Corrigendum1 pageEnglish languagee-Library read for1 day
TC - Correction of technical errors
- Corrigendum1 pageEnglish languagee-Library read for1 day
This European Standard gives Ecodesign requirements for small power transformers complying with the EN 61558 series and in relation to Commission Regulation (EU) N° 548/2014 implementing the European Directive 2009/125/EC. This European Standard is applicable to transformers with 50 Hz AC input and output with a rated power of 1 kVA or more and a voltage lower than 1 kV, except those excluded in the regulation. For transformers with a voltage between 1 kV and 1,1 kV, this standard may be used as a guide.
- Standard10 pagesEnglish languagee-Library read for1 day
The scope of this document is to define performance requirements of Large Power Transformers in compliance with EN 50708-1-1:2020.
NOTE This document covers the transformers under Commission Regulation (EU) No 548/2014 of 21 May 2014 and its amendment No 2019/1783 of 1 October 2019, gives additional specific guidance for single phase transformers, autotransformers, multi winding transformers and for transformers with OD and OF cooling systems, necessary for the correct application of energy efficiency requirements to these categories of transformers.
- Standard16 pagesEnglish languagee-Library read for1 day
This document is part of the EN 50708 series which applies to transformers in compliance with EN 60076-1.
- Standard33 pagesEnglish languagee-Library read for1 day
The scope of this document is to define the energy performance of Medium Power Transformers in compliance with EN 50708-1-1:2020.
- Standard14 pagesEnglish languagee-Library read for1 day
The scope of this document is to define the energy performance of Medium Power Transformers in compliance with EN 50708-1-1:2020.
- Standard14 pagesEnglish languagee-Library read for1 day
The scope of this document is to define performance requirements of Large Power Transformers in compliance with EN 50708-1-1:2020. NOTE This document covers the transformers under Commission Regulation (EU) No 548/2014 of 21 May 2014 and its amendment No 2019/1783 of 1 October 2019, gives additional specific guidance for single phase transformers, autotransformers, multi winding transformers and for transformers with OD and OF cooling systems, necessary for the correct application of energy efficiency requirements to these categories of transformers.
- Standard16 pagesEnglish languagee-Library read for1 day
This document is part of the EN 50708 series which applies to transformers in compliance with EN 60076-1.
- Standard33 pagesEnglish languagee-Library read for1 day
IEC 60076-10:2016 defines sound pressure and sound intensity measurement methods from which sound power levels of transformers, reactors and their associated cooling devices are determined. The methods are applicable to transformers, reactors and their cooling devices - either fitted to or separate from the transformer - as covered by the IEC 60076 and IEC 61378 series. This standard is primarily intended to apply to measurements made at the factory. Conditions on-site can be very different because of the proximity of objects, including other transformers. Nevertheless, this standard is applied to the extent possible for on site measurements. This edition includes the following significant technical changes with respect to the previous edition: - additional useful definitions introduced; - definition of distribution type transformers introduced for the purpose this standard; - new clause for sound level measurement specification introduced; - requirement for 1/3 octave band measurements introduced for transformers other than distribution type transformers; - standard measurement distance changed from 0,3 m to 1 m for transformers other than distribution type transformers; - height of measurement surface is now clearly defined to count from the reflecting plane; - measurement surface formula unified; - correction criteria for intensity method introduced; - rules for sound measurements on dry-type reactors introduced; - figures revised; - new informative test report templates introduced (Annex B); - IEC 60076-10-1 (application guide) revised in parallel providing worthwhile information for the use of this standard.
- Standard63 pagesEnglish languagee-Library read for1 day
This European Standard gives Ecodesign requirements for small power transformers complying with the EN 61558 series and in relation to Commission Regulation (EU) N° 548/2014 implementing the European Directive 2009/125/EC.
This European Standard is applicable to transformers with 50 Hz AC input and output with a rated power of 1 kVA or more and a voltage lower than 1 kV, except those excluded in the regulation.
For transformers with a voltage between 1 kV and 1,1 kV, this standard may be used as a guide.
- Standard10 pagesEnglish languagee-Library read for1 day
IEC 60076-10:2016 defines sound pressure and sound intensity measurement methods from which sound power levels of transformers, reactors and their associated cooling devices are determined. The methods are applicable to transformers, reactors and their cooling devices - either fitted to or separate from the transformer - as covered by the IEC 60076 and IEC 61378 series. This standard is primarily intended to apply to measurements made at the factory. Conditions on-site can be very different because of the proximity of objects, including other transformers. Nevertheless, this standard is applied to the extent possible for on site measurements. This edition includes the following significant technical changes with respect to the previous edition:
- additional useful definitions introduced;
- definition of distribution type transformers introduced for the purpose this standard;
- new clause for sound level measurement specification introduced;
- requirement for 1/3 octave band measurements introduced for transformers other than distribution type transformers;
- standard measurement distance changed from 0,3 m to 1 m for transformers other than distribution type transformers;
- height of measurement surface is now clearly defined to count from the reflecting plane;
- measurement surface formula unified;
- correction criteria for intensity method introduced;
- rules for sound measurements on dry-type reactors introduced;
- figures revised;
- new informative test report templates introduced (Annex B);
- IEC 60076-10-1 (application guide) revised in parallel providing worthwhile information for the use of this standard.
- Standard63 pagesEnglish languagee-Library read for1 day
This document is part of the EN 50708 series which applies to transformers in compliance with EN 60076 1.
- Draft34 pagesEnglish languagee-Library read for1 day
This document is part of the EN 50708 series which applies to transformers in compliance with EN 60076 1.
- Draft34 pagesEnglish languagee-Library read for1 day
This European Standard applies to new three-phase and single-phase power transformers with a highest voltage for equipment exceeding 36 kV and a rated power equal or higher than 5 kVA, or a rated power equal to or higher than 40 MVA regardless of the highest voltage for equipment.
The scope of this European Standard is the following:
- Defining the appropriate energy efficiency criteria;
- Setting of benchmark minimum efficiency levels for new transformers based on an assessment of the energy efficiency of the European transformer population installed in the last 10 years;
- Proposing higher minimum efficiency levels for improving the energy efficiency of new transformers;
- Providing guidance for consideration of Total Cost of Ownership.
This European Standard provides also a form for efficiency data collection to inform future efficiency benchmark levels.
NOTE 1 This standard covers the transformers under the EU Regulation N. 548/2014 and gives additional specific indications for single phase transformers, auto transformers, multi winding transformers and for transformers with OD and OF cooling systems.
Transformers considered to be out of the scope of this document are the following:
- instrument transformers, specifically designed to supply measuring instruments, meters, relays and other similar apparatus,
- transformers with low-voltage windings specifically designed for use with rectifiers to provide a DC supply,
- transformers specifically designed to be directly connected to a furnace,
- transformers specifically designed for offshore applications and floating offshore applications,
- transformers specially designed for emergency installations,
- transformers and auto-transformers specifically designed for railway feeding systems,
- earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral point for system grounding purposes,
- traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC contact line, directly or through a converter, used in fixed installations of railway applications,
- starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips,
- testing transformers, specifically designed to be used in a circuit to produce a specific voltage or current for the purpose of testing electrical equipment,
- welding transformers, specifically designed for use in arc welding equipment or resistance welding equipment,
- transformers specifically designed for explosion-proof and underground mining applications,
- transformers specifically designed for deep water (submerged) applications,
- medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA,
- large power transformers where it is demonstrated that for a particular application, technically feasible alternatives are not available to meet the minimum efficiency requirements set out by EU REGULATION N. 548/2014,
- large power transformers which are like for like replacements in the same physical location/installation for existing large power transformers, where this replacement cannot be achieved without entailing disproportionate costs associated to their transportation and/or installation.
For dry type large power transformers Minimum PEI values have been published in European Regulation and these values are included in Annex A.
NOTE 2 To retain consistency, the same list of exclusions in the EU Regulation N. 548/2014, has also been reproduced here. Within the above EU exclusion list, some had been excluded simply because no PEI data was available to CENELEC at the time on which to base appropriate PEI levels. Consequently, as such information becomes available in the future, it may be possible to derive suitable PEI Levels. Accordingly these particular categories are listed in Clause 6 as suitable for future consideration.
- Amendment4 pagesEnglish languagee-Library read for1 day
This European Standard covers medium power transformers. ‘Medium power transformer’ means a power transformer with a highest voltage for equipment higher than 1,1 kV, but not exceeding 36 kV and a rated power equal to or higher than 5 kVA but lower than 40 MVA.
National practices may require the use of highest voltages for equipment up to (but not including) 52 kV, when the rated voltage is less than 36 kV (such as Um = 38,5 kV or Um = 40,5 kV). This is considered to be an unusual case of a large power transformer, where the requirements are those for a medium power transformer with Um = 36 kV.
NOTE 1 ‘Large power transformer’ means a power transformer with a highest voltage for equipment exceeding 36 kV and a rated power equal to or higher than 5 kVA, or a rated power equal to or higher than 40 MVA regardless of the highest voltage for equipment. Large power transformers are in the scope of EN 50629.
NOTE 2 Transformers with tap changer (DETC or OLTC) are included in this European Standard even if they have separate tapping winding.
The object of this European Standard is to set up requirements related to electrical characteristics and design of medium power transformers.
The following transformers are excluded from this European Standard:
a) instrument transformers, specifically designed to supply measuring instruments, meters, relays and other similar apparatus;
b) transformers with low-voltage windings specifically designed for use with rectifiers to provide a DC supply;
c) transformers specifically designed to be directly connected to a furnace;
d) transformers specifically designed for offshore applications and floating offshore applications;
e) transformers specially designed for emergency installations;
f) transformers and auto-transformers specifically designed for railway feeding systems;
g) earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral point for system grounding purposes;
h) traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC contact line, directly or through a converter, used in fixed installations of railway applications;
i) starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips;
j) testing transformers, specifically designed to be used in a circuit to produce a specific voltage or current for the purpose of testing electrical equipment;
k) welding transformers, specifically designed for use in arc welding equipment or resistance welding equipment;
l) transformers specifically designed for explosion-proof and underground mining applications;
m) transformers specifically designed for deep water (submerged) applications;
n) medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA;
o) large power transformers where it is demonstrated that for a particular application, technically feasible alternatives are not available to meet the minimum efficiency requirements set out by the commission regulation (EU) No 548/2014;
p) large power transformers which are like for like replacements in the same physical location/installation for existing large power transformers, where this replacement cannot be achieved without entailing disproportionate costs associated to their transportation and/or installation.
In case one of the last two exclusions is claimed, this should be documented at the signature of the contract with a declaration made by the customer.
NOTE 3 This standard covers the transformers under the Commission Regulation (EU) No. 548/2014 and gives additional specific guidance for single phase transformers, multi winding transformers and for transformers with OF or OD cooling systems, necessary for the correct application of energy efficiency requirements to these categories of transformers.
- Standard31 pagesEnglish languagee-Library read for1 day
- Standard – translation34 pagesSlovenian languagee-Library read for1 day
To improve the definitions of transformers excluded from the COMMISSION REGULATION (EU) No 548/2014 as well as any other definition requiring further clarification
- Amendment5 pagesEnglish languagee-Library read for1 day
This European Standard applies to new three-phase and single-phase power transformers with a highest voltage for equipment exceeding 36 kV and a rated power equal or higher than 5 kVA, or a rated power equal to or higher than 40 MVA regardless of the highest voltage for equipment.
The scope of this European Standard is the following:
- Defining the appropriate energy efficiency criteria;
- Setting of benchmark minimum efficiency levels for new transformers based on an assessment of the energy efficiency of the European transformer population installed in the last 10 years;
- Proposing higher minimum efficiency levels for improving the energy efficiency of new transformers;
- Providing guidance for consideration of Total Cost of Ownership.
This European Standard provides also a form for efficiency data collection to inform future efficiency benchmark levels.
NOTE 1 This standard covers the transformers under the EU Regulation N. 548/2014 and gives additional specific indications for single phase transformers, auto transformers, multi winding transformers and for transformers with OD and OF cooling systems.
Transformers considered to be out of the scope of this document are the following:
- instrument transformers, specifically designed to supply measuring instruments, meters, relays and other similar apparatus,
- transformers with low-voltage windings specifically designed for use with rectifiers to provide a DC supply,
- transformers specifically designed to be directly connected to a furnace,
- transformers specifically designed for offshore applications and floating offshore applications,
- transformers specially designed for emergency installations,
- transformers and auto-transformers specifically designed for railway feeding systems,
- earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral point for system grounding purposes,
- traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC contact line, directly or through a converter, used in fixed installations of railway applications,
- starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips,
- testing transformers, specifically designed to be used in a circuit to produce a specific voltage or current for the purpose of testing electrical equipment,
- welding transformers, specifically designed for use in arc welding equipment or resistance welding equipment,
- transformers specifically designed for explosion-proof and underground mining applications,
- transformers specifically designed for deep water (submerged) applications,
- medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA,
- large power transformers where it is demonstrated that for a particular application, technically feasible alternatives are not available to meet the minimum efficiency requirements set out by EU REGULATION N. 548/2014,
- large power transformers which are like for like replacements in the same physical location/installation for existing large power transformers, where this replacement cannot be achieved without entailing disproportionate costs associated to their transportation and/or installation.
For dry type large power transformers Minimum PEI values have been published in European Regulation and these values are included in Annex A.
NOTE 2 To retain consistency, the same list of exclusions in the EU Regulation N. 548/2014, has also been reproduced here. Within the above EU exclusion list, some had been excluded simply because no PEI data was available to CENELEC at the time on which to base appropriate PEI levels. Consequently, as such information becomes available in the future, it may be possible to derive suitable PEI Levels. Accordingly these particular categories are listed in Clause 6 as suitable for future consideration.
- Standard41 pagesEnglish languagee-Library read for1 day
This European Standard applies to new three-phase and single-phase power transformers with a highest voltage for equipment exceeding 36 kV and a rated power equal or higher than 5 kVA, or a rated power equal to or higher than 40 MVA regardless of the highest voltage for equipment. The scope of this European Standard is the following: - Defining the appropriate energy efficiency criteria; - Setting of benchmark minimum efficiency levels for new transformers based on an assessment of the energy efficiency of the European transformer population installed in the last 10 years; - Proposing higher minimum efficiency levels for improving the energy efficiency of new transformers; - Providing guidance for consideration of Total Cost of Ownership. This European Standard provides also a form for efficiency data collection to inform future efficiency benchmark levels. NOTE 1 This standard covers the transformers under the EU Regulation N. 548/2014 and gives additional specific indications for single phase transformers, auto transformers, multi winding transformers and for transformers with OD and OF cooling systems. Transformers considered to be out of the scope of this document are the following: - instrument transformers, specifically designed to supply measuring instruments, meters, relays and other similar apparatus, - transformers with low-voltage windings specifically designed for use with rectifiers to provide a DC supply, - transformers specifically designed to be directly connected to a furnace, - transformers specifically designed for offshore applications and floating offshore applications, - transformers specially designed for emergency installations, - transformers and auto-transformers specifically designed for railway feeding systems, - earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral point for system grounding purposes, - traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC contact line, directly or through a converter, used in fixed installations of railway applications, - starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips, - testing transformers, specifically designed to be used in a circuit to produce a specific voltage or current for the purpose of testing electrical equipment, - welding transformers, specifically designed for use in arc welding equipment or resistance welding equipment, - transformers specifically designed for explosion-proof and underground mining applications, - transformers specifically designed for deep water (submerged) applications, - medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA, - large power transformers where it is demonstrated that for a particular application, technically feasible alternatives are not available to meet the minimum efficiency requirements set out by EU REGULATION N. 548/2014, - large power transformers which are like for like replacements in the same physical location/installation for existing large power transformers, where this replacement cannot be achieved without entailing disproportionate costs associated to their transportation and/or installation. For dry type large power transformers Minimum PEI values have been published in European Regulation and these values are included in Annex A. NOTE 2 To retain consistency, the same list of exclusions in the EU Regulation N. 548/2014, has also been reproduced here. Within the above EU exclusion list, some had been excluded simply because no PEI data was available to CENELEC at the time on which to base appropriate PEI levels. Consequently, as such information becomes available in the future, it may be possible to derive suitable PEI Levels. Accordingly these particular categories are listed in Clause 6 as suitable for future consideration.
- Amendment4 pagesEnglish languagee-Library read for1 day
To improve the definitions of transformers excluded from the COMMISSION REGULATION (EU) No 548/2014 as well as other definitions requiring further clarification
- Amendment8 pagesEnglish languagee-Library read for1 day
This European Standard covers medium power transformers. ‘Medium power transformer’ means a power transformer with a highest voltage for equipment higher than 1,1 kV, but not exceeding 36 kV and a rated power equal to or higher than 5 kVA but lower than 40 MVA.
National practices may require the use of highest voltages for equipment up to (but not including) 52 kV, when the rated voltage is less than 36 kV (such as Um = 38,5 kV or Um = 40,5 kV). This is considered to be an unusual case of a large power transformer, where the requirements are those for a medium power transformer with Um = 36 kV.
NOTE 1 ‘Large power transformer’ means a power transformer with a highest voltage for equipment exceeding 36 kV and a rated power equal or higher than 5 kVA, or a rated power equal to or higher than 40 MVA regardless of the highest voltage for equipment. Large power transformers are in the scope of EN 50629.
NOTE 2 Transformers with tap changer (DETC or OLTC) are included in this European Standard even if they have separate tapping winding.
The object of this European Standard is to set up requirements related to electrical characteristics and design of medium power transformers.
The following transformers are excluded from this European Standard:
- instrument transformers, specifically designed to supply measuring instruments, meters, relays and other similar apparatus;
- transformers with low-voltage windings specifically designed for use with rectifiers to provide a DC supply;
- transformers specifically designed to be directly connected to a furnace;
- transformers specifically designed for offshore applications and floating offshore applications;
- transformers specially designed for emergency installations;
- transformers and auto-transformers specifically designed for railway feeding systems;
- earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral point for system grounding purposes;
- traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC contact line, directly or through a converter, used in fixed installations of railway applications;
- starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips;
- testing transformers, specifically designed to be used in a circuit to produce a specific voltage or current for the purpose of testing electrical equipment;
- welding transformers, specifically designed for use in arc welding equipment or resistance welding equipment;
- transformers specifically designed for explosion-proof and underground mining applications,
- transformers specifically designed for deep water (submerged) applications;
- medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA;
- large power transformers where it is demonstrated that for a particular application, technically feasible alternatives are not available to meet the minimum efficiency requirements set out by the commission regulation (EU) No 548/2014;
- large power transformers which are like for like replacements in the same physical location/installation for existing large power transformers, where this replacement cannot be achieved without entailing disproportionate costs associated to their transportation and/or installation.
- Standard29 pagesEnglish languagee-Library read for1 day
To improve the definitions of transformers excluded from the COMMISSION REGULATION (EU) No 548/2014 as well as any other definition requiring further clarification
- Amendment5 pagesEnglish languagee-Library read for1 day
To improve the definitions of transformers excluded from the COMMISSION REGULATION (EU) No 548/2014 as well as other definitions requiring further clarification
- Amendment8 pagesEnglish languagee-Library read for1 day
This European Standard covers medium power transformers. ‘Medium power transformer’ means a power transformer with a highest voltage for equipment higher than 1,1 kV, but not exceeding 36 kV and a rated power equal to or higher than 5 kVA but lower than 40 MVA. National practices may require the use of highest voltages for equipment up to (but not including) 52 kV, when the rated voltage is less than 36 kV (such as Um = 38,5 kV or Um = 40,5 kV). This is considered to be an unusual case of a large power transformer, where the requirements are those for a medium power transformer with Um = 36 kV. NOTE 1 ‘Large power transformer’ means a power transformer with a highest voltage for equipment exceeding 36 kV and a rated power equal or higher than 5 kVA, or a rated power equal to or higher than 40 MVA regardless of the highest voltage for equipment. Large power transformers are in the scope of EN 50629. NOTE 2 Transformers with tap changer (DETC or OLTC) are included in this European Standard even if they have separate tapping winding. The object of this European Standard is to set up requirements related to electrical characteristics and design of medium power transformers. The following transformers are excluded from this European Standard: - instrument transformers, specifically designed to supply measuring instruments, meters, relays and other similar apparatus; - transformers with low-voltage windings specifically designed for use with rectifiers to provide a DC supply; - transformers specifically designed to be directly connected to a furnace; - transformers specifically designed for offshore applications and floating offshore applications; - transformers specially designed for emergency installations; - transformers and auto-transformers specifically designed for railway feeding systems; - earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral point for system grounding purposes; - traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC contact line, directly or through a converter, used in fixed installations of railway applications; - starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips; - testing transformers, specifically designed to be used in a circuit to produce a specific voltage or current for the purpose of testing electrical equipment; - welding transformers, specifically designed for use in arc welding equipment or resistance welding equipment; - transformers specifically designed for explosion-proof and underground mining applications, - transformers specifically designed for deep water (submerged) applications; - medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA; - large power transformers where it is demonstrated that for a particular application, technically feasible alternatives are not available to meet the minimum efficiency requirements set out by the commission regulation (EU) No 548/2014; - large power transformers which are like for like replacements in the same physical location/installation for existing large power transformers, where this replacement cannot be achieved without entailing disproportionate costs associated to their transportation and/or installation.
- Standard29 pagesEnglish languagee-Library read for1 day
This European Standard applies to new three-phase and single-phase power transformers with a highest voltage for equipment exceeding 36 kV and a rated power equal or higher than 5 kVA, or a rated power equal to or higher than 40 MVA regardless of the highest voltage for equipment. The scope of this European Standard is the following: - Defining the appropriate energy efficiency criteria; - Setting of benchmark minimum efficiency levels for new transformers based on an assessment of the energy efficiency of the European transformer population installed in the last 10 years; - Proposing higher minimum efficiency levels for improving the energy efficiency of new transformers; - Providing guidance for consideration of Total Cost of Ownership. This European Standard provides also a form for efficiency data collection to inform future efficiency benchmark levels. NOTE 1 This standard covers the transformers under the EU Regulation N. 548/2014 and gives additional specific indications for single phase transformers, auto transformers, multi winding transformers and for transformers with OD and OF cooling systems. Transformers considered to be out of the scope of this document are the following: - instrument transformers, specifically designed to supply measuring instruments, meters, relays and other similar apparatus, - transformers with low-voltage windings specifically designed for use with rectifiers to provide a DC supply, - transformers specifically designed to be directly connected to a furnace, - transformers specifically designed for offshore applications and floating offshore applications, - transformers specially designed for emergency installations, - transformers and auto-transformers specifically designed for railway feeding systems, - earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral point for system grounding purposes, - traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC contact line, directly or through a converter, used in fixed installations of railway applications, - starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips, - testing transformers, specifically designed to be used in a circuit to produce a specific voltage or current for the purpose of testing electrical equipment, - welding transformers, specifically designed for use in arc welding equipment or resistance welding equipment, - transformers specifically designed for explosion-proof and underground mining applications, - transformers specifically designed for deep water (submerged) applications, - medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA, - large power transformers where it is demonstrated that for a particular application, technically feasible alternatives are not available to meet the minimum efficiency requirements set out by EU REGULATION N. 548/2014, - large power transformers which are like for like replacements in the same physical location/installation for existing large power transformers, where this replacement cannot be achieved without entailing disproportionate costs associated to their transportation and/or installation. For dry type large power transformers Minimum PEI values have been published in European Regulation and these values are included in Annex A. NOTE 2 To retain consistency, the same list of exclusions in the EU Regulation N. 548/2014, has also been reproduced here. Within the above EU exclusion list, some had been excluded simply because no PEI data was available to CENELEC at the time on which to base appropriate PEI levels. Consequently, as such information becomes available in the future, it may be possible to derive suitable PEI Levels. Accordingly these particular categories are listed in Clause 6 as suitable for future consideration.
- Standard41 pagesEnglish languagee-Library read for1 day
This European Standard covers medium power transformers. ‘Medium power transformer’ means a power transformer with a highest voltage for equipment higher than 1,1 kV, but not exceeding 36 kV and a rated power equal to or higher than 5 kVA but lower than 40 MVA. National practices may require the use of highest voltages for equipment up to (but not including) 52 kV, when the rated voltage is less than 36 kV (such as Um = 38,5 kV or Um = 40,5 kV). This is considered to be an unusual case of a large power transformer, where the requirements are those for a medium power transformer with Um = 36 kV. NOTE 1 ‘Large power transformer’ means a power transformer with a highest voltage for equipment exceeding 36 kV and a rated power equal to or higher than 5 kVA, or a rated power equal to or higher than 40 MVA regardless of the highest voltage for equipment. Large power transformers are in the scope of EN 50629. NOTE 2 Transformers with tap changer (DETC or OLTC) are included in this European Standard even if they have separate tapping winding. The object of this European Standard is to set up requirements related to electrical characteristics and design of medium power transformers. The following transformers are excluded from this European Standard: a) instrument transformers, specifically designed to supply measuring instruments, meters, relays and other similar apparatus; b) transformers with low-voltage windings specifically designed for use with rectifiers to provide a DC supply; c) transformers specifically designed to be directly connected to a furnace; d) transformers specifically designed for offshore applications and floating offshore applications; e) transformers specially designed for emergency installations; f) transformers and auto-transformers specifically designed for railway feeding systems; g) earthing or grounding transformers, this is, three-phase transformers intended to provide a neutral point for system grounding purposes; h) traction transformers mounted on rolling stock, this is, transformers connected to an AC or DC contact line, directly or through a converter, used in fixed installations of railway applications; i) starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips; j) testing transformers, specifically designed to be used in a circuit to produce a specific voltage or current for the purpose of testing electrical equipment; k) welding transformers, specifically designed for use in arc welding equipment or resistance welding equipment; l) transformers specifically designed for explosion-proof and underground mining applications; m) transformers specifically designed for deep water (submerged) applications; n) medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA; o) large power transformers where it is demonstrated that for a particular application, technically feasible alternatives are not available to meet the minimum efficiency requirements set out by the commission regulation (EU) No 548/2014; p) large power transformers which are like for like replacements in the same physical location/installation for existing large power transformers, where this replacement cannot be achieved without entailing disproportionate costs associated to their transportation and/or installation. In case one of the last two exclusions is claimed, this should be documented at the signature of the contract with a declaration made by the customer. NOTE 3 This standard covers the transformers under the Commission Regulation (EU) No. 548/2014 and gives additional specific guidance for single phase transformers, multi winding transformers and for transformers with OF or OD cooling systems, necessary for the correct application of energy efficiency requirements to these categories of transformers.
- Standard31 pagesEnglish languagee-Library read for1 day
- Standard – translation34 pagesSlovenian languagee-Library read for1 day
Frequently Asked Questions
An EU Regulation is a binding legislative act that must be applied in its entirety across the European Union. Unlike directives, regulations do not need to be transposed into national law and are directly applicable in all member states. Regulations are used when uniform application across all EU countries is essential.
Regulation 548/2014 covers "Commission Regulation (EU) No 548/2014 of 21 May 2014 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to small, medium and large power transformers". This legislation has harmonized European standards (hENs) that provide a presumption of conformity with its essential requirements. There are 30 standards associated with this regulation.
Harmonized standards under 548/2014 are European standards (ENs) developed by CEN, CENELEC, or ETSI in response to a mandate from the European Commission. When these standards are cited in the Official Journal of the European Union, products manufactured in conformity with them benefit from a presumption of conformity with the essential requirements of 548/2014, facilitating CE marking and free movement within the European Economic Area.