What happens to a lift during a power failure?
A conventional lift does not continue normal travel after a power failure; the car stops when its drive loses power. Modern lifts may have an automatic rescue system that uses backup energy to bring the car to an appropriate floor and open the doors. A prolonged wait between floors is therefore not inevitable for every system.
The distinction is between maintaining normal operation of the whole lift and enabling safe evacuation. A similar approach applies to EKA System’s UPS, battery and critical-power work: deciding which loads must remain powered, and for how long, is central to design.
Does a UPS power the lift?
Not every lift needs a large UPS. Depending on lift design, an automatic rescue device, battery bank, UPS or another part of the building’s emergency-power infrastructure may operate.
The rescue objective is usually not hours of normal lift operation. It is to provide enough energy for controlled travel to a floor, door opening and the required control functions.
Why is backup energy needed if there is a generator?
A generator does not guarantee that every critical load remains powered without interruption at the moment of mains failure. Starting the generator and transferring the load takes time. This interval must be managed for controllers that cannot tolerate an interruption.
One important function of UPS and battery systems is to bridge the gap between mains loss and the alternative source becoming available. The solution for a lift depends on the manufacturer’s design, motor power, drive arrangement and rescue scenario.
Why does battery condition matter?
A rescue system may stand unused for years but must operate on the day it is needed. Ageing, prolonged high temperature or insufficient maintenance can reduce usable battery capacity. Having a backup source is not enough; it must remain capable of its duty.
Lift outages illustrate a basic principle of critical power: identify the essential function and provide reliable energy for its required duration, rather than assume every load must be supplied indefinitely.