SIST EN 61558-2-8:2010

SLOVENSKI STANDARD
SIST EN 61558-2-8:2010
01-oktober-2010
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Safety of transformers, reactors, power supply units and combinations thereof - Part 2-8:
Particular requirements and tests for transformers and power supply units for bells and
chimes (IEC 61558-2-8:2010)
Sicherheit von Transformatoren, Drosseln, Netzgeräten und entsprechende
Kombinationen - Teil 2-8: Besondere Anforderungen und Prüfungen an Transformatoren
und Netzgeräten für Klingeln und Läutewerke (IEC 61558-2-8:2010)
Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et des
combinaisons de ces éléments - Partie 2-8: Règles particulières et essais pour les
transformateurs et blocs d'alimentation pour sonneries et carillons (CEI 61558-2-8:2010)
Ta slovenski standard je istoveten z: EN 61558-2-8:2010
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
SIST EN 61558-2-8:2010 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61558-2-8:2010

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SIST EN 61558-2-8:2010

EUROPEAN STANDARD
EN 61558-2-8

NORME EUROPÉENNE
August 2010
EUROPÄISCHE NORM

ICS 29.180 Supersedes EN 61558-2-8:1998


English version


Safety of transformers, reactors, power supply units
and combinations thereof -
Part 2-8: Particular requirements and tests for transformers and power
supply units for bells and chimes
(IEC 61558-2-8:2010)


Sécurité des transformateurs, bobines Sicherheit von Transformatoren, Drosseln,
d'inductance, blocs d'alimentation Netzgeräten und entsprechende
et des combinaisons de ces éléments - Kombinationen -
Partie 2-8: Règles particulières et essais Teil 2-8: Besondere Anforderungen
pour les transformateurs et blocs und Prüfungen an Transformatoren
d'alimentation pour sonneries et carillons und Netzgeräten für Klingeln
(CEI 61558-2-8:2010) und Läutewerke
(IEC 61558-2-8:2010)




This European Standard was approved by CENELEC on 2010-07-01. 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, 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


© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61558-2-8:2010 E

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SIST EN 61558-2-8:2010
EN 61558-2-8:2010 - 2 -
Foreword
The text of document 96/354/FDIS, future edition 2 of IEC 61558-2-8, 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 61558-2-8 on
2010-07-01.
This European Standard supersedes EN 61558-2-8:1998.
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) 2011-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-07-01
This part is intended to be used in conjunction with the latest edition of EN 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 EN 61558-1, so as to convert that
publication into the EN standard: Particular requirements and tests for transformers and power supply
units for bell and chime.
A list of all parts of the EN 61558 series, under the general title: Safety of transformers, reactors, power
supply units and combinations thereof, can be found on the CENELEC website.
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 adopted accordingly.
In this part, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– explanatory matters: 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.
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive 2006/95/EC.
Annex ZA has been added by CENELEC.

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SIST EN 61558-2-8:2010
- 3 - EN 61558-2-8:2010
Endorsement notice
The text of the International Standard IEC 61558-2-8:2010 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 61558-2-16:2009 NOTE  Harmonized as EN 61558-2-8:2009 (not modified).
__________

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SIST EN 61558-2-8:2010
EN 61558-2-8:2010 - 4 -
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

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SIST EN 61558-2-8:2010
IEC 61558-2-8
®
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 2-8: Particular requirements and tests for transformers and power supply
units for bells and chimes

Sécurité des transformateurs, bobines d’inductance, blocs d’alimentation et des
combinaisons de ces éléments –
Partie 2-8: Règles particulières et essais pour les transformateurs et blocs
d’alimentation pour sonneries et carillons
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
N
CODE PRIX
ICS 29.180 ISBN 978-2-88912-036-9
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 61558-2-8:2010
– 2 – 61558-2-8 © IEC:2010
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.8
10 Change of input voltage setting .8
11 Output voltage and output current under load .8
12 No-load output voltage.9
13 Short-circuit voltage.9
14 Heatingss .9
15 Short-circuit and overload protection .10
16 Mechanical strength.10
17 Protection against harmful ingress of dust, solid objects and moisture.10
18 Insulation resistance, dielectric strength and leakage current .10
19 Construction .10
20 Components .12
21 Internal wiring .12
22 Supply connection and other external flexible cables or cords.12
23 Terminals for external conductors .12
24 Provisions for protective earthing .12
25 Screws and connections .13
26 Creepage distances, clearances and distances through insulation .13
27 Resistance to heat, fire and tracking .13
28 Resistance to rusting .13
Annexes.14
Annex F Requirements for manually operated switches which are parts of transformer
assemblies.14
Bibliography .14

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SIST EN 61558-2-8:2010
61558-2-8 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

SAFETY OF TRANSFORMERS, REACTORS,
POWER SUPPLY UNITS AND COMBINATIONS THEREOF –

Part 2-8: Particular requirements and tests
for transformers and power supply units for bells and chimes


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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 61558-2-8 has been prepared by IEC technical committee 96:
Transformers, reactors, power supply units and combinations thereof.
This second edition cancels and replaces the first edition published in 1998. 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: 1997,
The preparation of safety publications and the use of basic safety publications and group
safety publications.

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SIST EN 61558-2-8:2010
– 4 – 61558-2-8 © IEC:2010
The text of this standard is based on the following documents:
FDIS Report on voting
96/354/FDIS 96/361/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 transformers and
power supply units for bell and chime.
A list of all parts of the IEC 61558 series, under the general title: Safety of transformers,
reactors, power supply units and combinations thereof, can be found on the IEC website.
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 adopted accordingly.
In this part, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– explanatory matters: in smaller roman type.
In the text of this part, the words in bold are defined in Clause 3.
Subclauses 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
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE 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
...