IEC 60335-2-72 Ed. 2.0 b:2002

Deals with the safety of mains or battery supplied portable combined machines, with or without a built-in battery charger, having a chassis with or without traction drive, intended for commercial and industrial use indoors or outdoors for dry or wet treatment of hard floors or of floors with carpeting, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances.