... anywhere in the four weeks building the entire system has to walk systems, rail systems, hoisting ... systems, control systems, rotary system, the boom and arm the first rotary body, ... safety systems and an independent security protection system and other parts. This type of window ... supply: 380V ± 10%, 50Hz, 4KW, three-phase five-wire system j. rope: f6.5mm × 4 k. safety factor:> ...