Historical
IEC 60335-2-54 Ed. 3.2 b:2007
Household and similar electrical appliances - Safety - Part 2-54: Particular requirements for surface-cleaning appliances for household use employing liquids or steam
"Deals with the safety of electric cleaning appliances for household use that are intended for cleaning surfaces such as windows, walls, and empty swimming pools by use of liquid cleansing agents or steam. The rated voltage of the appliance being not more than 250 V.The appliance may incorporate heating elements or means for pressurising the liquid container. "
International Electrotechnical Commission [iec]