IEC 61558-2-6:2009

Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers

IEC 61558-2-6:2009 deals with the safety of safety isolating transformers for general applications and power supply units incorporating safety 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.

Sécurité des transformateurs, bobines d'inductance, blocs d'alimentation et produits analogues pour des tensions d'alimentation jusqu'à 1 100 V - Partie 2-6: Règles particulières et essais pour les transformateurs de sécurité et les blocs d'alimentation incorporant des transformateurs de sécurité

La CEI 61558-2-6:2009 traite de la sécurité des transformateurs de sécurité pour applications d'ordre général et des blocs d'alimentation incorporant des transformateurs de sécurité pour applications d'ordre général. Les transformateurs incorporant des circuits électroniques sont également couverts par la présente 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 2-6 conformément à la Partie 1 (2005), et l'augmentation de la tension 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.

General Information

• Status: Published
• Publication Date: 10-Feb-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.180 - Transformers. Reactors
• Technical Committee: TC 96 - Transformers, reactors, power supply units, and combinations thereof
• Drafting Committee: MT 1 - TC 96/MT 1
• Current Stage: DELPUB - Deleted Publication
• Start Date: 05-Jul-2019
• Completion Date: 18-May-2021

Relations

• Revises: IEC 61558-2-6:1997 - Safety of power transformers, power supply units and similar - Part 2: Particular requirements for safety isolating transformers for general use
• Effective Date: 05-Sep-2023
• Revised: IEC 61558-2-6:2021 - Safety of transformers, reactors, power supply units and combinations thereof - Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers for general applications
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61558-2-6 ®
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 2-6: Particular requirements and tests for safety isolating transformers and
power supply units incorporating safety 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 2-6: Règles particulières et essais pour les transformateurs de sécurité et
les blocs d'alimentation incorporant des transformateurs de sécurité

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IEC 61558-2-6 ®
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 2-6: Particular requirements and tests for safety isolating transformers and
power supply units incorporating safety 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 2-6: Règles particulières et essais pour les transformateurs de sécurité et
les blocs d'alimentation incorporant des transformateurs de sécurité

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
N
CODE PRIX
ICS 29.180 ISBN 978-2-88910-541-0
– 2 – 61558-2-6 © 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 .7
13 Short-circuit voltage .8
14 Heating .8
15 Short-circuit and overload protection .8
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 .11
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 .

61558-2-6 © 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 2-6: Particular requirements and tests
for safety isolating transformers and power supply units
incorporating safety isolating transformers

FOREWORD
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International standard IEC 61558-2-6 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
...