EN 61558-2-3:2010

Safety of transformers, reactors, power supply units and combinations thereof - Part 2-3: Particular requirements and tests for ignition transformers for gas and oil burners

IEC 61558-2-3:2010 deals with the safety of ignition transformers for gas and oil burners. Ignition transformers incorporating electronic circuits are also covered by this standard. This second edition cancels and replaces the first edition published in 1999. 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 2-3: Besondere Anforderungen und Prüfungen an Zündtransformatoren für Gas- und Ölbrenner

Sécurité des transformateurs, bobines d’inductance, blocs d'alimentation et des combinaisons de ces éléments - Partie 2-3: Règles particulières et essais pour les transformateurs d'allumage pour brûleurs à gaz et combustibles liquides

La CEI 61558-2-3:2010 traite de la sécurité des transformateurs d'allumage pour brûleurs à gaz et combustibles liquides. Les transformateurs d'allumage incorporant des circuits électroniques sont également couverts par la présente norme. Cette deuxième édition annule et remplace la première édition publiée en 1999. Elle constitue une révision technique. Les principales modifications comprennent 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 kombinacij teh elementov - 2-3. del: Posebne zahteve in preskusi za vžigne transformatorje in vžigne napajalnike z vžignimi transformatorji za plinske in oljne gorilnike (IEC 61558-2-3:2010)

Ta del IEC 61558 obravnava varnost vžignih transformatorjev za plinske in oljne gorilnike. V tem standardu so prav tako zajeti vžigni transformatorji, ki vsebujejo elektronska vezja. OPOMBA 1: Varnost vključuje električne, toplotne, mehanske in kemične vidike. Razen če je drugače navedeno v nadaljevanju, izraz transformator zajema vžigne transformatorje in vžigne napajalnike z vžignimi transformatorji za plinske in oljne gorilnike. Ta del velja za fiksne enofazne transformatorje suhega tipa s pripadajočim zračnim hlajenjem (naravnim ali vsiljenim), ki se uporabljajo v vžignih sistemih plinskih in oljnih gorilnikov. Navitje je lahko inkapsulirano ali nekapsulirano. Nazivna napetost napajanja ne presega 1.000 V enosmernega toka, in nazivna frekvenca napajanja in notranja obratovalna frekvenca ne presega 500 Hz. Nazivni izhodni tok pri kratkem stiku ne presega 500 mA enosmernega toka. Izhodna napetost v prostem teku ali nazivna izhodna napetost ne presega 15.000 V enosmernega toka. Ta del se ne uporablja za zunanje krogotoke in njihove sestavne dele, ki so namenjeni povezavi z vhodnimi in izhodnimi terminali ali izhodi vtičnic transformatorjev. Transformatorji, ki jih zajema ta del, se uporabljajo v napravah, kjer dvojno ali ojačano izolacijo med krogotoki ne zahtevajo pravila inštalacije, ali standard za končni proizvod.

General Information

• Status: Published
• Publication Date: 12-Aug-2010
• Withdrawal Date: 30-Jun-2013
• 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
• Start Date: 13-Aug-2010
• Completion Date: 13-Aug-2010
• 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 61558-2-3:2010 - Safety of transformers, reactors, power supply units and combinations thereof - Part 2-3: Particular requirements and tests for ignition transformers for gas and oil burners (IEC 61558-2-3:2010)

Relations

• Replaces: EN 61558-2-3:2000 - Safety of power transformers, power supply units and similar devices - Part 2-3: Particular requirements for ignition transformers for gas and oil burners
• Effective Date: 28-Jan-2023
• Replaced By: EN IEC 61558-2-3:2025 - Safety of transformers, reactors, power supply units and combinations thereof - Part 2-3: Particular requirements and tests for ignition transformers for gas and oil burners
• Effective Date: 18-Jan-2022

Overview

EN 61558-2-3:2010 (IEC 61558-2-3:2010) is the European/CENELEC adoption of the international standard that specifies particular safety requirements and tests for ignition transformers for gas and oil burners. This second edition replaces the 1999 edition and updates Part 2-3 to align with EN/IEC 61558-1:2005. The standard covers conventional ignition transformers and those that incorporate electronic circuits, and it is intended to be used together with the general requirements in Part 1.

Key topics and requirements

EN 61558-2-3 supplements EN/IEC 61558-1 by adding ignition-transformer-specific requirements and test procedures. Major technical topics include:

• Ratings and classification - defining intended use, rated voltages/currents and product classes for ignition transformers.
• Marking and documentation - required information for safe installation and operation.
• Protection against electric shock - construction and insulation measures to reduce shock risk.
• Output characteristics - tests for no-load output voltage, output under load and short-circuit behaviour.
• Short-circuit and overload protection - requirements and test methods to ensure safe response to faults.
• Heating and temperature rise - limits and thermal testing to verify safe operating temperatures.
• Insulation, dielectric strength and leakage current - test procedures for insulation resistance and dielectric integrity.
• Creepage distances and clearances - specified values (see annexes) for material groups to prevent tracking and flashover.
• Mechanical strength, ingress protection and corrosion resistance - to ensure robust installation in burner environments.
• Construction, components and internal wiring - component selection, wiring practices and terminal requirements.
• Annexes - include tables and guidance such as preferred operational parameters and creepage/clearance values for different material CTI groups.

The document also recognises intellectual property considerations and recommends a transitional period for manufacturers and test houses after publication.

Applications and users

This standard is essential for:

• Manufacturers and designers of ignition transformers and ignition power-supply units for gas and oil burners.
• OEMs and boiler/burner system integrators specifying safe ignition components.
• Test laboratories and certification bodies performing conformity assessment and type testing.
• Safety engineers and compliance teams ensuring products meet CE/EC Directive requirements (notably electrical safety directives referenced in the foreword).

Applying EN 61558-2-3 helps ensure reliable ignition performance, reduced fire/electric shock risk, and regulatory compliance for heating and burner equipment.

Related standards

• EN/IEC 61558-1:2005 - General requirements and tests for transformers, reactors and power supplies (mandatory companion to Part 2-3).
• IEC Guide 104 - Use of basic and group safety publications.
• Relevant national implementations of EN 61558-2-3 and associated EC directives for electrical safety and product compliance.

Keywords: EN 61558-2-3, IEC 61558-2-3, ignition transformers, gas burners, oil burners, transformer safety, creepage distances, dielectric strength, electrical safety standard.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2010
1DGRPHãþD
SIST EN 61558-2-3:2000
Varnost transformatorjev, dušilk, napajalnikov in kombinacij teh elementov - 2-3.
del: Posebne zahteve in preskusi za vžigne transformatorje in vžigne napajalnike z
vžignimi transformatorji za plinske in oljne gorilnike (IEC 61558-2-3:2010)
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-3:
Particular requirements and tests for ignition transformers for gas and oil burners (IEC
61558-2-3:2010)
Sicherheit von Transformatoren, Drosseln, Netzgeräten und entsprechende
Kombinationen - Teil 2-3: Besondere Anforderungen und Prüfungen an
Zündtransformatoren für Gas- und Ölbrenner (IEC 61558-2-3:2010)
Sécurité des transformateurs, bobines d’inductance, blocs d'alimentation et des
combinaisons de ces éléments - Partie 2-3: Règles particulières et essais pour les
transformateurs d'allumage pour brûleurs à gaz et combustibles liquides (CEI 61558-2-
3:2010)
Ta slovenski standard je istoveten z: EN 61558-2-3:2010
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61558-2-3
NORME EUROPÉENNE
August 2010
EUROPÄISCHE NORM
ICS 29.180 Supersedes EN 61558-2-3:2000

English version
Safety of transformers, reactors, power supply units and combinations
thereof -
Part 2-3: Particular requirements and tests for ignition transformers
for gas and oil burners
(IEC 61558-2-3:2010)
Sécurité des transformateurs, bobines Sicherheit von Transformatoren, Drosseln,
d’inductance, blocs d'alimentation Netzgeräten und entsprechende
et des combinaisons de ces éléments - Kombinationen -
Partie 2-3: Règles particulières et essais Teil 2-3: Besondere Anforderungen
pour les transformateurs d'allumage und Prüfungen an Zündtransformatoren
pour brûleurs à gaz et combustibles für Gas- und Ölbrenner
liquides (IEC 61558-2-3:2010)
(CEI 61558-2-3:2010)
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 61558-2-3:2010 E
Foreword
The text of document 96/357/FDIS, future edition 2 of IEC 61558-2-3, 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 61558-2-3 on
2010-07-01.
This European Standard supersedes EN 61558-2-3:2000.
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) 2011-04-01
– 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 ignition for gas and oil burners.
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.

- 3 - EN 61558-2-3:2010
Endorsement notice
The text of the International Standard IEC 61558-2-3:2010 was approved by CENELEC as a European
Standard without any modification.
__________
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, EN 61558-1 2005
power supplies, reactors + corr. August 2006
and similar products -
Part 1: General requirements and tests

ISO 3864-1 2002 Graphical symbols - Safety colours and safety - -
signs -
Part 1: Design principles for safety signs in
workplaces and public areas
IEC 61558-2-3 ®
Edition 2.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUB LICATION GROUPÉE DE SÉCURITÉ
Safety of transformers, reactors, power supply units and combinations thereof –
Part 2-3: Particular requirements and tests for ignition transformers for gas and
oil burners
Sécurité des transformateurs, bobines d’inductance, blocs d’alimentation et des
combinaisons de ces éléments –
Partie 2-3: Règles particulières et essais pour les transformateurs d’allumage
pour brûleurs à gaz et combustibles liquides

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
Q
CODE PRIX
ICS 29.180 ISBN 978-2-88912-034-5
– 2 – 61558-2-3 © IEC:2010
CONTENTS
FOREWORD.3
1 Scope.6
2 Normative references .7
3 Terms and definitions .7
4 General requirements .7
5 General notes on tests .7
6 Ratings.8
7 Classification.8
8 Marking and other information .9
9 Protection against electric shock .10
10 Change of input voltage setting .10
11 Output voltage and output current under load .10
12 No-load output voltage .11
13 Short-circuit voltage .11
14 Heating .11
15 Short-circuit and overload protection .11
16 Mechanical strength .12
17 Protection against harmful ingress of dust, solid objects and moisture.12
18 Insulation resistance, dielectric strength and leakage current .13
19 Construction .13
20 Components .14
21 Internal wiring.14
22 Supply connection and other external flexible cable or cords .14
23 Terminals for external conductors.14
24 Provisions for protective earthing .14
25 Screws and connections .14
26 Creepage distances, clearances and distances through insulation.14
27 Resistance to heat, fire and tracking.15
28 Resistance to rusting.15
Annexes .17
Annex C Creepage distances (cr), clearances (cl) and distances through insulation
(dti) – Material group II (400 ≤CTI <600) .17
Annex D Creepage distances (cr), clearances (cl) and distances through insulation
(dti) – Material group I (CTI ≥600).17

Figure 101 – Arcing horn .16

Table 101 – Preferred values of operational parameters .11
Table 102 – Test time for short-circuit test .12
Table 103 – Creepage distances and clearances for output terminals .15

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

Part 2-3: Particular requirements and tests for ignition
transformers for gas and oil burners

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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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
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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
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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 61558-2-3 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 1999. 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.
– 4 – 61558-2-3 © IEC:2010
The text of this standard is based on the following documents:
FDIS Report on voting
96/357/FDIS 96/364/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 ignition for gas
and oil burners.
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, 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 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.
61558-2-3 © IEC:2010 – 5 –
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 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.

– 6 – 61558-2-3 © IEC:2010
SAFETY OF TRANSFORMERS, REACTORS,
POWER SUPPLY UNITS AND COMBINATIONS THEREOF –

Part 2-3: Particular requirements and tests
...