SINGLE-PHASE LIFT Single-phase Elevators at 230V for the first time. Elevators can now also be operated on the building mains network where three-phase connections are not available. The combination of an inverter and the series motor can move a nominal load of up to 408 kg with speeds up to 0.6 m/s. Single phase elevators use on Ground floor to Seven floors also. The new frequency inverter series product also facilitates simple and time-saving setup and configuration as it comes prepared for elevator operation; it can be adjusted to the units relevant for elevator engineering such as m/s or m/s².