Household and similar electrical appliances - Safety - Part 2-67: Particular requirements for floor treatment machines for commercial use (IEC 60335-2-67:2012, modified) (english version)
Household and similar electrical appliances - Safety - Part 2-67: Particular requirements for floor treatment and floor cleaning machines for commercial use (IEC 60335-2-67:2002 + A1:2005, modified) (english version)
Household and similar electrical appliances - Safety - Part 2-67: Particular requirements for floor treatment and floor cleaning machines for commercial use (IEC 60335-2-67:2002 + A1:2005, modified) (english version)