The operation of the electric system elevator is based on the use of the machine as a driving element. This makes moving the pulley where cables are drawn, from which hang at their ends on the one hand the cab and counterweight (also defined as mass balance) on the other. The engine does not have to make the necessary and sufficient force to lift the total weight of the car, but the weight of the car is compensated by the counterweight. This fact makes the engines are smaller and consume less. The power and size of an engine is determined by the load to lift the elevator and the speed at which it moves. The building height does not affect just only from a certain height must take into account the weight of the cables, which are normally compensated with chains.
Within this group we differentiate those with quarter machines that do not.
- Speed: nominal speed of electric elevators exceeds the hydraulic lifts (to 1.6m / s).
- Height: we can install electric lifts unlimited travel lift, so they are the optimal solution for buildings over 6 floors.
- Energy efficiency: electric elevators, especially those equipped with gearless machines are much lower than those of any other elevator consumption.
- Comfort: Control the movement of the car by inverter allows stability and comfort than other elevator cab.
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