... switch is 380V,36V or 24V(safety voltage).Hook: The Hook Block is tested to 150 % of full ... 10,16, 20 ton3Rated span (m)7.5-31.54lifting height (m)6, 9, 12, 18, 24, 305Work duryA3 andA46Control wayPendent ... 50hz 3phs(or according to your demand)9Main hook lifting speed (m/min)8/0.8m/min, 7/0. ... min, 3.5/0.35m/min10Trolley travelling speed (m/min)20/30m/min11I beam model16-63c12Min. rotate radius0 ...