Mechanism of topkit tower crane QTZ250H12( H3/ 36B) Hoisting 45LVF 30 m/ min 0-36 0-72 0-108 0-18 0-36 0-54 t 6 3 1.5 12 6 3 70RCS 30 m/ min 0-40 0-80 0-20 0-40 t 6 3 126 5 75LVF 30 m/ min 0-74 0-136 0-200 0-37 0-68 0-100 t 6 3 1.5 12 6 3 Trolleying( m/ min) 4TVF 0- 55 4T3V4 7.55/ 28/ 57 Slewing( r/ min) 0-0.7 Travelling( m/ min) 0-30 Power supply 380V/ 50HZ 440V/ 60HZ Necessary power supply 75KVA Mast section 2* 2* 3 m