IEC 60335-2-91 Ed. 3.0 en:2008

Applicable to safety of mains-operated walk behind and hand held lawn trimmers and lawn edge trimmers, with cutting element(s) of non metallic filament line or freely pivoting non metallic cutter(s), with a kinetic energy of not more than 10 J each, rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. Main changes in this edition include the revised endurance test in Clause 18; Annex B, which allows for battery-powered trimmers; and addition of informative Annexes BB, CC and EE on vibration, noise and safety instructions.