EN 61047:2004

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General notes on tests
5 Classification
   5.1 Classification according to the load
   5.2 Classification according to output voltage
6 Marking
   6.1 Mandatory marking
   6.2 Optional marking
7 Output voltage and current
   7.1 Open-circuit voltage
   7.2 Voltage during operation
   7.3 Voltage surges during switching and operation
   7.4 Voltage waveform
   7.5 Inrush current
8 Total circuit power
9 Circuit power factor
10 Supply current
11 Impedance at audio-frequencies
12 Operational tests for abnormal conditions
13 Endurance
Annex A (normative) Tests
Annex B (informative) A guide to quoting product life and
         failure rate
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

This International Standard specifies performance requirements for electronic step-down convertors for use on d.c. supplies up to 250 V and a.c. supplies up to 1 000 V at 50 Hz or 60 Hz with operating frequencies deviating from the supply frequency, associated with tungsten halogen lamps as specified in EN 60357 and other filament lamps.