Historical
IEC 60968 Ed. 1.0 b:1988
Self-ballasted lamps for general lighting services - Safety requirements
"Specifies the safety and interchangeability requirements, together with the test methods and conditions, required to show compliance of tubular fluorescent and other gas-discharge lamps with integrated means for controlling starting and stable operation (self-ballasted lamps), intended for domestic and similar general lighting purposes, having: -a rated wattage up to 60 W; -a rated voltage of 100 V to 250 V; -Edison screw or bayonet caps. "
International Electrotechnical Commission [iec]