IEC 61558-2-15:2011

IEC 61558-2-15 ®
Edition 2.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Safety of transformers, reactors, power supply units and combinations thereof –
Part 2-15: Particular requirements and tests for isolating transformers for the
supply of medical locations
Sécurité des transformateurs, bobines d’inductance, blocs d'alimentation et des
combinaisons de ces éléments –
Partie 2-15: Règles particulières et essais pour les transformateurs de
séparation de circuits pour locaux à usages médicaux

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IEC 61558-2-15 ®
Edition 2.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Safety of transformers, reactors, power supply units and combinations thereof –
Part 2-15: Particular requirements and tests for isolating transformers for the
supply of medical locations
Sécurité des transformateurs, bobines d’inductance, blocs d'alimentation et des
combinaisons de ces éléments –
Partie 2-15: Règles particulières et essais pour les transformateurs de
séparation de circuits pour locaux à usages médicaux

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX R
ICS 29.180 ISBN 978-2-88912-790-0

– 2 – 61558-2-15  IEC:2011
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 6
3 Terms and definitions . 6
4 General requirements . 6
5 General notes on tests . 7
6 Ratings . 7
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 . 8
13 Short-circuit voltage and inrush currents . 9
14 Heating . 10
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 . 12
20 Components . 14
21 Internal wiring . 14
22 Supply connection and other external flexible cables or cords. 14
23 Terminals for external conductors . 14
24 Provisions for protective earthing . 15
25 Screws and connections . 15
26 Creepage distances, clearances and distances through insulation . 15
27 Resistance to heat, fire and tracking . 15
28 Resistance to rusting . 15
Annexes . 16
Annex H Electronic circuits . 16
Annex L Routine tests (production tests) . 16
Bibliography . 17
Index of defined terms . 18

Figure 101 – The required circuit for measuring the leakage current from the output
winding to earth. 11
Figure 102 – The required circuit for measuring the leakage current at the protective
earth conductor . 12

61558-2-15  IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
SAFETY OF TRANSFORMERS, REACTORS,
POWER SUPPLY UNITS AND COMBINATIONS THEREOF –

Part 2-15: Particular requirements and tests
for isolating transformers for the supply of medical locations

FOREWORD
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International standard IEC 61558-2-15 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
...