EN 60923:2005/A1:2006

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General notes on tests
5 Marking
6 Ballasts designed to operate at various
   supply voltages
7 Circuit power-factor
8 Supply current
9 Current waveform
   9.1 Lamp operating current waveform
   9.2 Test procedure
10 Magnetic screening
11 Ignitors
12 Electrical requirements for ballasts for
   high-pressure mercury vapour lamps
   12.1 Ballast setting
   12.2 Short-circuit current
   12.3 Open-circuit voltage (minimum voltage for
        stable operation)
13 Electrical requirements for ballasts for low-pressure
   sodium vapour lamps
   13.1 Ballast setting
   13.2 Short-circuit current and run-up conditions
   13.3 Open-circuit voltage (minimum voltage for
        stable operation)
14 Electrical requirements for ballasts for metal
   halide lamps
   14.1 Ballast setting
   14.2 Short-circuit current and run-up conditions
   14.3 Open-circuit voltage (minimum voltage for
        stable operation)
15 Electrical requirements for ballasts for high-pressure
   sodium vapour lamps
   15.1 Ballast setting
   15.2 Short-circuit current
   15.3 Open-circuit voltage
Annex A (normative) Reference ballasts
Annex B (normative) Reference lamps
Annex C (normative) General requirements for tests
Annex D (normative) Explanation of measurements of
                       ballast setting and lamp-operating
                       current waveform for high-pressure sodium
                       vapour lamps
Annex E (informative) Interpretations
Annex ZA (normative) Normative references to international
                       publications with their corresponding
                       European publications
Bibliography

Describes performance requirements for ballasts for discharge lamps such as high-pressure mercury vapour, low-pressure sodium vapour, high-pressure sodium vapour and metal halide lamps. Clauses 12 through 15 each detail specific requirements for a particular type of ballast.