Full Description IEC 60400:2020 states the technical and dimensional requirements for lampholders for tubular fluorescent lamps and for starterholders, and the methods of test to be used in determining the safety and the fit of the lamps in the lampholders and the starters in the starterholders.
IEC 60400:2020 history
2022IEC 60400:2017/AMD2:2022 Amendment 2 - Lampholders for tubular fluorescent lamps and starterholders