Specifies general performance requirements for electronic ballasts for use on d.c. supplies having rated voltages not exceeding 250 V associated with tubular fluorescent lamps. Specifies also particular performance requirements for d.c. electronic ballasts for public transport lighting, general lighting and aircraft lighting. Supersedes IEC 60458.This consolidated version consists of the first edition (1989),its amendment 1 (1996) and its amendment 2 (2001). Therefore, no need to order amendments in addition to this publication.