IEC 61558-2-3:2010

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

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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
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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:20
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