scope:

This International Standard specifies the performance andconstructional requirements, and associated tests, for d.c.supplied electronic ballasts used to supply fluorescent lamps forlighting on railway rolling stock. Its requirements replace thoseof IEC 61347 for all railway rolling stock applications and specifyand complete those of IEC 61347 for the specific needs of railwayrolling stock applications. This international standard applies toelectronic ballasts ? supplying pre-heated cathode fluorescentlamps without integrated starters, tubular or single capped,according to IEC 60081 and IEC 60901 respectively, ? having asingle and non adjustable luminous flux level. It does not apply toelectronic ballasts supplying non pre-heated cathode lamps and/orlamps with integrated starters.