SIST EN 61558-2-4:2010

Safety of transformers, reactors, power supply units and similar products for voltages up to 1100 V -- Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers

This part of IEC 61558 deals with the safety of isolating transformers for general applications and power supply units incorporating isolating transformers for general applications. Transformers incorporating electronic circuits are also covered by this standard.

Sicherheit von Transformatoren, Drosseln, Netzgeräten und dergleichen für Versorgungsspannungen bis 1100 V - Teil 2-4: Besondere Anforderungen und Prüfungen an Trenntransformatoren und Netzgeräte die Trenntransformatoren enthalten

Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et produits analogues pour des tensions d'alimentation jusqu'à 1 100 V -- Partie 2-4: Règles particulières et essais pour les transformateurs de séparation des circuits et les blocs d'alimentation incorporant des transformateurs de séparation des circuits

La CEI 61558-2-4:2009 traite de la sécurité des transformateurs de séparation des circuits pour applications d'ordre général et des blocs d'alimentation incorporant des transformateurs de séparation des circuits pour applications d'ordre général. Les transformateurs incorporant des circuits électroniques sont également couverts par cette norme. Cette deuxième édition annule et remplace la première édition publiée en 1997. Elle constitue une révision technique. Les principales modifications consistent en la mise à jour de la présente partie conformément à la Partie 1 (2005), et l'augmentation des tensions d'alimentation jusqu'à 1 100 V pour être en conformité avec les normes du TC 14. La présente partie a le statut de publication groupée de sécurité conformément au Guide CEI 104. La présente partie est destinée à être utilisée avec la dernière édition de la CEI 61558-1 et ses amendements. Elle est basée sur la seconde édition (2005) de cette norme. 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 za napajalne napetosti do 1100 V - 2-4. del: Posebne zahteve in preskusi za ločilne transformatorje in napajalnike z ločilnimi transformatorji (IEC 61558-2-4:2009)

Ta del IEC 61558 obravnava varnost ločilnih transformatorjev za splošno rabo in napajalnikov z ločilnimi transformatorji za splošno rabo. Ta standard pokriva tudi transformatorje z elektronskimi vezji.

General Information

• Status: Published
• Publication Date: 14-Dec-2009
• ICS: 29.180 - Transformers. Reactors
• Technical Committee: MTR - Instrument transformers
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 29-Oct-2009
• Due Date: 03-Jan-2010
• Completion Date: 15-Dec-2009
• 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
• Ref Project: EN 61558-2-4:2009 - Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers

Relations

• Replaces: SIST EN 61558-2-4:1999 - Safety of power transformers, power supply units and similar -- Part 2-4: Particular requirements for isolating transformers for general use
• Effective Date: 01-Jan-2010
• Replaces: SIST EN 61558-2-4:1999 - Safety of power transformers, power supply units and similar -- Part 2-4: Particular requirements for isolating transformers for general use
• Effective Date: 28-Jan-2023
• Revised: SIST EN 61558-2-4:1999 - Safety of power transformers, power supply units and similar -- Part 2-4: Particular requirements for isolating transformers for general use
• Effective Date: 06-Mar-2012
• Replaces: SIST EN 61558-2-4:1999 - Safety of power transformers, power supply units and similar -- Part 2-4: Particular requirements for isolating transformers for general use
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61558-2-4:2010
01-januar-2010
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SIST EN 61558-2-4:1999
9DUQRVWWUDQVIRUPDWRUMHYGXãLONQDSDMDOQLNRYLQSRGREQLKL]GHONRY]DQDSDMDOQH
QDSHWRVWLGR9GHO3RVHEQH]DKWHYHLQSUHVNXVL]DORþLOQH
WUDQVIRUPDWRUMHLQQDSDMDOQLNH]ORþLOQLPLWUDQVIRUPDWRUML,(&
Safety of transformers, reactors, power supply units and similar products for voltages up
to 1100 V -- Part 2-4: Particular requirements and tests for isolating transformers and
power supply units incorporating isolating transformers
Sicherheit von Transformatoren, Drosseln, Netzgeräten und dergleichen für
Versorgungsspannungen bis 1100 V - Teil 2-4: Besondere Anforderungen und
Prüfungen an Trenntransformatoren und Netzgeräte die Trenntransformatoren enthalten
Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et produits
analogues pour des tensions d'alimentation jusqu'à 1 100 V -- Partie 2-4: Règles
particulières et essais pour les transformateurs de séparation des circuits et les blocs
d'alimentation incorporant des transformateurs de séparation des circuits
Ta slovenski standard je istoveten z: EN 61558-2-4:2009
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
SIST EN 61558-2-4:2010 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61558-2-4:2010

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SIST EN 61558-2-4:2010

EUROPEAN STANDARD
EN 61558-2-4

NORME EUROPÉENNE
May 2009
EUROPÄISCHE NORM


ICS 29.180 Supersedes EN 61558-2-4:1997


English version


Safety of transformers, reactors, power supply units
and similar products for supply voltages up to 1 100 V -
Part 2-4: Particular requirements and tests for isolating transformers
and power supply units incorporating isolating transformers
(IEC 61558-2-4:2009)


Sécurité des transformateurs, bobines Sicherheit von Transformatoren, Drosseln,
d'inductance, blocs d'alimentation Netzgeräten und dergleichen
et produits analogues pour des tensions für Versorgungsspannungen bis 1 100 V -
d'alimentation jusqu'à 1 100 V - Teil 2-4: Besondere Anforderungen
Partie 2-4: Règles particulières et essais und Prüfungen an Trenntransformatoren
pour les transformateurs de séparation und Netzgeräte die Trenntransformatoren
des circuits et les blocs d'alimentation enthalten
incorporant des transformateurs (IEC 61558-2-4:2009)
de séparation des circuits
(CEI 61558-2-4:2009)


This European Standard was approved by CENELEC on 2009-03-01. 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, 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

Central Secretariat: avenue Marnix 17, B - 1000 Brussels


© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61558-2-4:2009 E

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SIST EN 61558-2-4:2010
EN 61558-2-4:2009 - 2 -
Foreword
The text of document 96/316/FDIS, future edition 2 of IEC 61558-2-4, prepared by IEC TC 96,
Transformers, reactors, power supply units and similar products for low voltage up to 1 100 V, was
submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61558-2-4 on
2009-03-01.
This European Standard supersedes EN 61558-2-4:1997.
The main changes consist of updating this part in accordance with EN 61558-1:2005, and increasing the
supply voltages up to 1 100 V to be in line with the standards of TC 14.
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 isolating transformers and
power supply units incorporating isolating transformers.
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.
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) 2009-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-03-01
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.
__________
Endorsement notice
The text of the International Standard IEC 61558-2-4:2009 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61558-2-16 NOTE  Harmonized as EN 61558-2-16:200X (not modified).
__________

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SIST EN 61558-2-4:2010
- 3 - EN 61558-2-4:2009

Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

Addition to Annex ZA of EN 61558-1:
Publication Year Title EN/HD Year

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

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SIST EN 61558-2-4:2010

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SIST EN 61558-2-4:2010
IEC 61558-2-4
®
Edition 2.0 2009-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ
Safety of transformers, reactors, power supply units and similar products for
supply voltages up to 1 100 V –
Part 2-4: Particular requirements and tests for isolating transformers and power
supply units incorporating isolating transformers

Sécurité des transformateurs, bobines d’inductance, blocs d'alimentation et
produits analogues pour des tensions d'alimentation jusqu'à 1 100 V –
Partie 2-4: Règles particulières et essais pour les transformateurs de séparation
des circuits et les blocs d'alimentation incorporant des transformateurs de
séparation des circuits

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
N
CODE PRIX
ICS 29.180 ISBN 2-8318-1028-7
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 61558-2-4:2010
– 2 – 61558-2-4 © IEC:2009
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .6
3 Terms and definitions .6
4 General requirements .6
5 General notes on tests .6
6 Ratings.6
7 Classification.7
8 Marking and other information .7
9 Protection against electric shock .7
10 Change of input voltage setting .7
11 Output voltage and output current under load .7
12 No-load output voltage .8
13 Short-circuit voltage .8
14 Heating .9
15 Short-circuit and overload protection .9
16 Mechanical strength .9
17 Protection against harmful ingress of dust, solid objects and moisture.9
18 Insulation resistance, dielectric strength and leakage current .9
19 Construction .9
20 Components .11
21 Internal wiring.11
22 Supply connection and other external flexible cable or cords .11
23 Terminals for external conductors.11
24 Provisions for protective earthing .11
25 Screws and connections .12
26 Creepage distances, clearances and distances through insulation.12
27 Resistance to heat, fire and tracking.12
28 Resistance to rusting.12
Annexes .13
Annex C Creepage distances (cr), clearances (cl) and distances through insulation
(dti) Material group II (400 ≤CTI <600) .13
Annex D Creepage distances (cr), clearances (cl) and distances through insulation
(dti) Material group I (CTI ≥600).13
Annex R Explanations of the application of 4.2 of IEC 60664-1:2007 (see IEC 61558-1
Subclause 26.2).13
Bibliography.14

8
Table 101 – Output voltage difference .

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SIST EN 61558-2-4:2010
61558-2-4 © IEC:2009 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

SAFETY OF TRANSFORMERS, REACTORS, POWER SUPPLY UNITS
AND SIMILAR PRODUCTS FOR SUPPLY VOLTAGES UP TO 1 100 V –

Part 2-4: Particular requirements and tests
for isolating transformers and power supply units
incorporating isolating transformers


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may Participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also Participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International standard IEC 61558-2-4 has been prepared by IEC technical committee 96:
Transformers, reactors, power supply units and similar products for low voltages up to
1 100 V.
This second edition cancels and replaces the first edition published in 1997. It constitutes a
technical revision. The main changes consist of updating this part in accordance with Part 1
(2005), and increasing the supply voltages up to 1 100 V to be in line with the standards of TC
14.
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.

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SIST EN 61558-2-4:2010
– 4 – 61558-2-4 © IEC:2009
The text of this standard is based on the following documents:
FDIS Report on voting
96/316/FDIS 96/321/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part is intended to be used in conjunction with the latest edition of IEC 61558-1 and its
amendments. It is based on the second edition (2005) of that standard.
This part supplements or modifies the corresponding clauses in IEC 61558-1, so as to convert
that publication into the IEC standard: Particular requirements and tests for isolating
transformers and power supply units incorporating isolating transformers.
A list of all parts of the IEC 61558 series can be found on the IEC website under the title:
Safety of transformers, reactors, power supply units and similar products for supply voltages
up to 1 100 V.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
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.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated
...