DC UPS for elevators: how to choose the right device?

A UPS (Uninterruptible Power Supply) device comes into play when it is necessary to provide an alternative power source to the load when the main power supply line stops working. It is an electrical device that is used to solve many common issues when it comes to powering both commercial and residential facilities. These devices also have the ability to store energy through batteries to be used later in case of an emergency.

What is a UPS device?

A UPS device for elevators falls into the category of DC UPS and is composed of three main components: the battery charger, the battery, and an inverter. The UPS device takes the three-phase input and powers the elevator while charging the batteries at the same time. This unit can be better described as a backup solution for elevators. A UPS device must be designed taking into account the different and important factors involved in the design of an elevator system, such as a common power outage, the capacity of the traction motor, the type of elevator, or the installation environment (whether for residential or commercial use).

How does a UPS for elevators work exactly?

In case of a power outage, when the main power source stops feeding, the battery mode is automatically activated so that the load is always powered. The most convenient part happens when the main power source becomes available again, the UPS unit automatically transfers the elevator to the main source and then resumes charging the batteries. The transition phase between the power outage and the activation of the backup lasts only from 15 to 20 milliseconds.

Features of a UPS for elevators

A DC UPS unit plays a fundamental role in the emergency power supply of elevators. In case