UPS sizing : How to determine the power

By UPS sizing we mean to define the power needed to protect the devices connected to an UPS. To determine the maximum power that can be supplied by a UPS, it is necessary to understand first of all which devices will be connected and what power will be absorbed by each of them.

Sizing of a UPS

First of all, it is necessary to understand what is the maximum value that the connected device will be able to consume. If you have the value of the device in Watt (W) you have to convert it into VA with a simple mathematical calculation. For example, a PC with a monitor consumes about 250 Watts. To convert this value into VA just divide it by 0.7:

250W / 0.7 = 357 VA

Once this calculation is done, follow these simple steps:

Make a list of all the devices that must be protected by the UPS, including all extensions, such as servers, monitors, etc ..;
Multiply the voltage (V) of the device and its amperage (A) to obtain the power required by each single device in Volt-Ampere (VA) and add the VA of all the devices to be protected;
The result will correspond to the maximum power that your UPS will need.
On average a computer consumes about 250W, a modem 50W, a printer from 80 to 150W.

Why a UPS?

Most of company downtime and damage to IT systems are due to voltage drops, power supply surges and blackouts. To ensure correct operation of local and remote systems, it is necessary to have safe protection against all electrical disturbances. Online and line interactive UPSs are the ideal solution to overcome these problems. Below we will show you which are the best UPS in the AEC range:

Uninterruptible Power Supply | IST3

“ If you want to find the secrets of the universe, you have to think in terms of energy, frequency and vibrations”

-Nikola Tesla

The AEC Group has been a leader in the UPS sector for more than 50 years and is increasingly present in many industrial sectors, and not only, to improve the quality of work, of employees and the well-being of citizens.

Thanks to the support of qualified and professional technicians, AEC is able to assist and guide its customers in choosing the most suitable solution for them. In fact, the range of products present in the AEC catalog is wide, starting from single-phase UPSs, of small dimensions that support voltage loads up to 10kVA, suitable for example for product packaging lines, up to three-phase UPSs that can reach up to 600kVA ideal for supporting multiple production lines and high electrical voltage loads.

AEC UPS | Power Supply

Founded way back in 1968, the AEC Group, Allis Electric Co. Ltd, is a public company listed on the Taipei Stock Exchange since 1994.

The AEC group has specialized for more than 50 years in the production of UPS for the protection of the power supply of industrial plants.


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