DIN EN 50311 : 2004

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
   3.1 General terms
   3.2 Lamps and characteristics
4 Classification
5 Characteristics
   5.1 Rated voltages
   5.2 Overvoltages
   5.3 Type of fluorescent lamps
6 Product information
   6.1 Nature of information
   6.2 Marking
   6.3 Instructions for storage, installation operation and
        maintenance
7 Normal service conditions
   7.1 Temperature
   7.2 Other conditions
8 Constructional and performance requirements
   8.1 Constructional requirements
   8.2 Performance requirements
   8.3 Safety requirements
9 Tests
   9.1 Test conditions
   9.2 Kinds of tests
   9.3 Verification of constructional and performance requirements
Annex A (informative) Types of lamps
Annex B (informative) Electronic ballast for lamps up to 40 W
Annex C (informative) Electronic ballast for lamps up to 40 W
Annex D (informative) Electronic ballast for lamps up to 15 W
Annex E (informative) Electronic ballast for lamps up to 10 W
Annex F (informative) Electronic ballast for lamps up to 10 W
Annex G (informative) Basic schematic diagrams
Annex H (informative) Correspondence with EN 60924 requirements

Defines the performance and constructional requirements, and associated tests, for d.c. supplied electronic ballasts used to supply fluorescent lamps for lighting on railway rolling stock.