IEC 60920:1990

FOREWORD
PREFACE
INTRODUCTION
SECTION ONE - GENERAL REQUIREMENTS
Clause
1. Scope
2. Definitions
3. General requirements
4. General notes on tests
5. Classification
6. Marking
SECTION TWO - SAFETY REQUIREMENTS
7. Protection against accidental contact with live parts
8. Terminals
9. Provision for earthing
10. Moisture resistance and insulation
11. Thermal endurance of windings
12. Ballast heating
13. Screws, current-carrying parts and connections
14. Creepage distances and clearances
15. Resistance to heat and fire
16. Resistance to corrosion
APPENDIX A - Tests: General requirements and tests
             referring to Section Two
APPENDIX B - Particular requirements for thermally
             protected ballasts
APPENDIX C - The use of constants S other than 4 500 in
             tw tests
APPENDIX D - Information for carrying out the heating
             tests of thermally protected ballasts
FIGURES

Specifies ballasts, excluding resistance types. for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz, associated with tubular fluorescent lamps with or without pre-heated cathodes operated with or without a starter or starting device and having rated wattages, dimensions and characteristics as specified in IEC 60081. A.C. supplied electronic ballasts for high frequency operation are excluded. These are specified in IEC 60928. Supersedes IEC 60082.