I.S. EN 61558-1:2006

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 General notes on tests
6 Ratings
7 Classification
8 Marking and other information
9 Protection against electric shock
10 Change of input voltage setting
11 Output voltage and output current under load
12 No-load output voltage
13 Short-circuit voltage
14 Heating
15 Short circuit and overload protection
16 Mechanical strength
17 Protection against harmful ingress of dust, solid objects
   and moisture
18 Insulation resistance, dielectric strength and leakage
   current
19 Construction
20 Components
21 Internal wiring
22 Supply connection and other external flexible cables or
   cords
23 Terminals for external conductors
24 Provisions for protective earthing
25 Screws and connections
26 Creepage distances, clearances and distances through
   insulation
27 Resistance to heat, fire and tracking
28 Resistance to rusting
Annex A (normative) Measurement of creepage distances and
         clearances
Annex B (normative) Testing a series of transformers.
Annex C (normative) Creepage distances (cr), clearances (cl)
         and distances through insulation (dti) Material
         group II (400 <= CTI < 600)
Annex D (normative) Creepage distances (cr), clearances (cl)
         and distances through insulation (dti) Material
         group I (CTI >= 600)
Annex E (normative) Glow-wire test
Annex F (normative) Requirements for manually operated
         switches which are parts of transformers assembly
Annex G (normative) Tracking test
Annex H (normative) Electronic circuits
Annex I (void)
Annex J (normative) Measuring network for touch-currents
Annex K (normative) Insulated winding wires for use as
         multiple layer insulation
Annex L (normative) Routine tests (production tests)
Annex M (informative) Examples to be used as a guide for 19.1
Annex N (informative) Examples of points of application of
         test voltages
Annex O (void)
Annex P (informative) Examples of points of measurement of
         creepage distances and clearances
Annex Q (informative) Explanation of IP numbers for degrees
         of protection
Annex R (normative) Explanations of the application of
         4.1.1.2.1 of IEC 60664-1
Annex S (void)
Annex T (void)
Annex U (informative) Optional t[w]-marking of transformers
Annex V (informative) Symbols to be used for thermal cut-outs
Annex W (normative) Coated printed circuit boards
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography
Index of defined terms

Deals with safety aspects of power transformers, power supplies, reactors and similar products such as electrical, thermal and mechanical safety.