EN 61558-2-20:2011

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-20: Particular requirements and tests for small reactors

IEC 61558-2-20:2010 deals with the safety of small reactors for general applications. This part is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) general purpose reactors including alternating current, premagnetised and current compensated independent or associated reactors. This second edition cancels and replaces the first edition published in 2000. It constitutes a technical revision. The main changes consist of updating this part in accordance with IEC 61558-1:2005. This part has the status of a group safety publication in accordance with IEC Guide 104. The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 12 months from the date of publication. In the meantime, the previous edition can still be ordered by contacting your local IEC member National Committee or the IEC Central Office.

Sicherheit von Transformatoren, Drosseln, Netzgeräten und entsprechende Kombinationen - Teil 2-20: Besondere Anforderungen und Prüfungen an Kleindrosseln

Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et combinaisons de ces éléments - Partie 2-20: Règles particulières et essais pour les petites bobines d'inductance

La CEI 61558-2-20:2010 traite de la sécurité des petites bobines d'inductance pour applications d'ordre général. La présente partie est applicable aux bobines d'inductance fixes ou mobiles, monophasées ou polyphasées, à refroidissement par air (circulation naturelle ou forcée), pour usage général, incluant les bobines d'inductance à courant alternatif, prémagnétisées et à courant compensé, indépendantes ou associées. Cette deuxième édition annule et remplace la première édition publiée en 2000. Elle constitue une révision technique. Les principales modifications consistent en la mise à jour de la présente partie conformément à la CEI 61558-1:2005. La présente partie a le statut de publication groupée de sécurité conformément au Guide CEI 104. L'attention des Comités Nationaux est attirée sur le fait que les fabricants d'appareils et les organismes d'essai peuvent avoir besoin d'une période transitoire après la publication d'une nouvelle publication CEI, ou d'une publication amendée ou révisée, pour fabriquer des produits conformes aux nouvelles exigences et pour adapter leurs équipements aux nouveaux essais ou aux essais révisés. Le comité recommande que le contenu de cette publication soit entériné au niveau national au plus tôt 12 mois après la date de publication.

Varnost transformatorjev, dušilk, napajalnikov in podobnih izdelkov - 2-20. del: Posebne zahteve in preskusi za majhne reaktorje (IEC 61558-2-20:2010)

Nadomestilo:
ta del IEC 61558 obravnava varnost majhnih reaktorjev za splošne uporabe.
OPOMBA 1: Varnost vključuje električne, toplotne in mehanske vidike.
Razen če je drugače določeno, od tu naprej pojem transformator ali reaktor zajema majhne
reaktorje.
Ta del velja za fiksne ali prenosne, enofazne ali večfazne, zračno hlajene (naravno
ali vsiljeno) reaktorje za splošne namene, vključno z reaktorji z izmeničnim tokom, vnaprej namagnetene in tokovno
kompenzirane neodvisne ali povezane reaktorje.
Ocenjena napetost napajanja ne presega 1.000 V izmeničnega toka ali 1 500 V enosmernega toka brez nihanja, ocenjena frekvenca napajanja in notranja obratovalna frekvenca pa ne presegata 1 MHz.
Ocenjena moč ne presega:
– 25 kVAR izmeničnega toka (25 kW enosmernega toka) za enofazne reaktorje,
– 50 kVAR izmeničnega toka (50 kW enosmernega toka) za večfazne reaktorje.
Ta del velja za reaktorje brez omejitve ocenjene moči, ki je predmet dogovora med kupcem in proizvajalcem.
Ta del velja za reaktorje suhega tipa. Navitje je lahko inkapsulirano ali nekapsulirano.
Ta del ne velja za:
– reaktorje, ki jih zajema IEC 60289,
– balast za fluorescenčne cevi, ki jih zajema IEC 61347-2-8,
– balast za sijalke (razen svetil s fluorescenčnimi cevmi), zajete v IEC 61347-2-9.
OPOMBA 2: Za reaktorje, polnjene s tekočim dielektrikom ali mletim materialom, kot je na primer pesek, se obravnavajo dodatne zahteve.
OPOMBA 3: Upoštevati je treba naslednje:
– za reaktorje, namenjene uporabi v vozilih, na krovih ladij in v zračnih plovilih, so lahko potrebne dodatne zahteve (iz drugih standardov, ki veljajo, državnih pravil itd.),
– meritve za zaščito ohišij in komponent v ohišjih pred zunanjimi vplivi, kot so plesen, mrčes, termiti, sončno sevanje in led, je prav tako treba upoštevati,
– različne pogoje za transport, hranjenje in delovanje reaktorja, je prav tako treba upoštevati,
– dodatne zahteve v skladu z drugimi primernimi standardi in državnimi pravili lahko veljajo za reaktorje, namenjene uporabi v posebnih okoljih, kot je tropsko okolje.
OPOMBA 4: Običajno so reaktorji namenjeni združevanju z opremo za funkcionalne zahteve opreme ali z zahtevami inštalacijskih pravil ali drugih specifikacij naprave.
OPOMBA 5: Reaktorji, ki vsebujejo elektronska vezja in komponente, so prav tako zajeti v tem standardu.
OPOMBA 6: Zaščita pred električnim udarom je lahko zagotovljena (ali dopolnjena) z drugimi deli ali značilnostmi opreme, kot je na primer ohišje.
OPOMBA 7: Reaktorji za nekatere uporabe bodo v prihodnosti zajeti v komplementarnih normativnih dodatkih.
OPOMBA 8: Prihodnji tehnološki razvoj reaktorjev je lahko potreben zaradi dviga zgornje meje frekvenc, do takrat pa se lahko ta del uporablja kot dokument s smernicami.

General Information

• Status: Published
• Publication Date: 24-Feb-2011
• Withdrawal Date: 01-Jan-2014
• ICS: 29.180 - Transformers. Reactors
• Technical Committee: CLC/SR 96 - Small power transformers, reactors, power supply units and similar products
• Drafting Committee: IEC/TC 96 - IEC_TC_96
• Parallel Committee: IEC/TC 96 - IEC_TC_96
• Current Stage: 6060 - Document made available - Publishing
• Completion Date: 25-Feb-2011
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Ref Project: SIST EN 61558-2-20:2011 - Safety of transformers, reactors, power supply units and combinations thereof - Part 2-20: Particular requirements and tests for small reactors (IEC 61558-2-20:2010)

Relations

• Replaces: EN 61558-2-20:2000 - Safety of power transformers, power supply units and similar devices - Part 2-20: Particular requirements for small reactors
• Effective Date: 28-Jan-2023
• Revised: FprEN IEC 61558-2-20:2022 - Safety of transformers, reactors, power supply units and combinations thereof - Part 2-20: Particular requirements and tests for small reactors
• Effective Date: 21-Sep-2021

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2011
1DGRPHãþD
SIST EN 61558-2-20:2001
Varnost transformatorjev, dušilk, napajalnikov in podobnih izdelkov - 2-20. del:
Posebne zahteve in preskusi za majhne reaktorje (IEC 61558-2-20:2010)
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-
20: Particular requirements and tests for small reactors (IEC 61558-2-20:2010)
Sicherheit von Transformatoren, Drosseln, Netzgeräten und entsprechende
Kombinationen - Teil 2-20: Besondere Anforderungen und Prüfungen an Kleindrosseln
(IEC 61558-2-20:2010)
Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et
combinaisons de ces éléments - Partie 2-20: Règles particulières et essais pour les
petites bobines d'inductance (CEI 61558-2-20:2010)
Ta slovenski standard je istoveten z: EN 61558-2-20:2011
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61558-2-20
NORME EUROPÉENNE
February 2011
EUROPÄISCHE NORM
ICS 29.180 Supersedes EN 61558-2-20:2000

English version
Safety of transformers, reactors, power supply units and combinations
thereof -
Part 2-20: Particular requirements and tests for small reactors
(IEC 61558-2-20:2010)
Sécurité des transformateurs, bobines Sicherheit von Transformatoren, Drosseln,
d'inductance, blocs d'alimentation et Netzgeräten und entsprechende
combinaisons de ces éléments - Kombinationen -
Partie 2-20: Règles particulières et essais Teil 2-20: Besondere Anforderungen und
pour les petites bobines d'inductance Prüfungen an Kleindrosseln
(CEI 61558-2-20:2010) (IEC 61558-2-20:2010)

This European Standard was approved by CENELEC on 2011-01-02. 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 Central Secretariat 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 Central Secretariat 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland 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

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61558-2-20:2011 E
Foreword
The text of document 96/356/FDIS, future edition 2 of IEC 61558-2-20, prepared by IEC TC 96,
Transformers, reactors, power supply units, and combinations thereof, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 61558-2-20 on 2011-01-02.
This European Standard supersedes EN 61558-2-20:2000.
The main changes consist of updating this part in accordance with EN 61558-1:2005.
This part has the status of a group safety publication in accordance with IEC Guide 104:1997, The
preparation of safety publications and the use of basic safety publications and group safety publications.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-10-02
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2014-01-02
This part is intended to be used in conjunction with the latest edition of EN 61558-1 and its amendments.
It is based on EN 61558-1:2005.
This part supplements or modifies the corresponding clauses in EN 61558-1, so as to convert that
publication into the European standard: Particular requirements and tests for small reactors.
Where a particular subclause of Part 1 is not mentioned in this part, that subclause applies as far as is
reasonable. Where this part states "addition", "modification" or "replacement", the relevant text of Part 1 is
to be adapted accordingly.
In this part, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– explanatory matter: in smaller roman type:
In the text of this part, the words in bold are defined in Clause 3.
Subclauses, notes, figures and tables additional to those in Part 1 are numbered starting from 101;
supplementary annexes are entitled AA, BB, etc.
Annex ZA has been added by CENELEC.
__________
- 3 - EN 61558-2-20:2011
Endorsement notice
The text of the International Standard IEC 61558-2-20:2010 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 60289:1988 NOTE  Harmonized as EN 60289:1994 (modified).
IEC 61347-2-8:2000 NOTE  Harmonized as EN 61347-2-8:2001 (not modified).
IEC 61347-2-9:2000 NOTE  Harmonized as EN 61347-2-9:2001 (not modified).
IEC 61558-2-16:2009 NOTE  Harmonized as EN 61558-2-16:2009 (not modified).
__________
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Annex ZA of Part 1 is applicable except as follows:

Addition:
Publication Year Title EN/HD Year

IEC 61558-1 2005 Safety of power transformers, power supplies, EN 61558-1 2005
reactors and similar products - + corr. August 2006
Part 1: General requirements and tests

IEC 61558-2-20 ®
Edition 2.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Safety of transformers, reactors, power supply units and combinations thereof –
Part 2-20: Particular requirements and tests for small reactors

Sécurité des transformateurs, bobines d’inductance, blocs d’alimentation et des
combinaisons de ces éléments –
Partie 2-20: Règles particulières et essais pour les petites bobines d'inductance

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
Q
CODE PRIX
ICS 29.180 ISBN 978-2-88912-038-3
– 2 – 61558-2-20 © IEC:2010
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references.6
3 Terms and definitions .6
4 General requirements .8
5 General notes on tests.8
6 Ratings.8
7 Classification .9
8 Marking and other information.9
9 Protection against electric shock.11
10 Change of input voltage setting .11
11 Output voltage and output current under load .11
12 No-load output voltage.12
13 Short-circuit voltage.12
14 Heating.12
15 Short-circuit and overload protection .12
16 Mechanical strength.14
17 Protection against harmful ingress of dust, solid objects and moisture.14
18 Insulation resistance, dielectric strength and leakage current .14
19 Construction .14
20 Components .14
21 Internal wiring .15
22 Supply connection and other external flexible cables or cords.15
23 Terminals for external conductors .15
24 Provision for protective earthing.15
25 Screws and connections .15
26 Creepage distances, clearances and distances through insulation .15
27 Resistance to heat, fire and tracking .15
28 Resistance to rusting .16
Annexes.17
Bibliography .17

61558-2-20 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY OF TRANSFORMERS, REACTORS,
POWER SUPPLY UNITS AND COMBINATIONS THEREOF –

Part 2-20: Particular requirements and tests for small reactors

FOREWORD
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