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 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. 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. 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. 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.

Sicherheit von Transformatoren, Drosseln, Netzgeräten und dergleichen für Versorgungsspannungen bis 1 100 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-May-2009
Current Stage
6060 - Document made available
Start Date
15-May-2009
Due Date
14-Jun-2009
Completion Date
15-May-2009

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SLOVENSKI STANDARD
SIST EN 61558-2-4:2010
01-januar-2010
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SIST EN 61558-2-4:1999
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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.

---------------------- Page: 1 ----------------------
SIST EN 61558-2-4:2010
---------------------- Page: 2 ----------------------
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
---------------------- Page: 3 ----------------------
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).
__________
---------------------- Page: 4 ----------------------
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
---------------------- Page: 5 ----------------------
SIST EN 61558-2-4:2010
---------------------- Page: 6 ----------------------
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
CODE PRIX
ICS 29.180 ISBN 2-8318-1028-7
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
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

Table 101 – Output voltage difference ....................................................................................

---------------------- Page: 8 ----------------------
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,

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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.
---------------------- Page: 9 ----------------------
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
...

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