I.S. EN 60925:1992

FOREWORD
PREFACE
SECTION ONE - GENERAL PERFORMANCE REQUIREMENTS
1 Scope
2 Definitions
3 General note on tests
4 Marking
5 Starting
6 Open-circuit voltage at terminations of lamp
7 Pre-heating conditions
   7.1 Minimum voltage across lamp cathode
   7.2 Maximum voltage across lamp cathode
8 Lamp current and luminous flux
9 Supply current
10 Maximum current in any lead (with cathode preheating)
11 Lamp operating current waveform
12 Stable operation (dimming ballasts only)
SECTION TWO - PARTICULAR PERFORMANCE REQUIREMENTS FOR
              DC SUPPLIED ELECTRONIC BALLASTS FOR
              GENERAL LIGHTING
13 Scope
14 Temperature cycling and endurance test
SECTION THREE - PARTICULAR PERFORMANCE REQUIREMENTS FOR
                DC SUPPLIED ELECTRONIC BALLASTS FOR
                PUBLIC TRANSPORT
LIGHTING
15 Scope
16 Marking
17 Starting test procedure for electronic ballasts with
   symbol "SP"
18 Temperature cycling and endurance test
19 Fuse
20 Acoustic noise
21 Vibration
SECTION FOUR - PARTICULAR PERFORMANCE REQUIREMENTS FOR D.C.
               SUPPLIED ELECTRONIC BALLASTS FOR AIRCRAFT
               LIGHTING
22 Scope
23 Marking
24 Temperature cycling and endurance tests
25 Fuse
26 Vibration
APPENDIX A - Tests
APPENDIX B - Reference ballasts
APPENDIX C - Reference lamps

Specifies general performance requirements for electronic ballasts for use on d.c. supplies having rated voltages not exceeding 250 V, associated with fluorescent lamps complying with IEC Publication 81.