To ensure that the UPS can function effectively at critical times, your UPS must have a sufficient capacity to accommodate all the connected devices. The larger the UPS capacity (measured in Watts), the more electronic devices can be supported during a power outage. This concept is certainly easy to understand. However, how to calculate UPS capacity requirements?
To calculate UPS capacity requirements, there are several aspects that need to be considered in advance. Here are the steps:
You need to add the load or power required by all devices. First, make a list of critical devices that need to be connected to the UPS. Second, calculate the total wattage required to run each device. Check the user manual for accurate power requirements.
After you have the total load, calculate the number of plugs that need to be attached to the UPS. Your UPS system must have the appropriate number of outlets. Of course, you can also install additional parallel sockets, but the results will certainly be less than ideal.
Calculate the needed UPS power supply time for all critical equipment after a sudden power outage. Do you just need time to manually turn off all critical devices? Do you want to continue your work? Or just save them and shut down? Or do you just need a moment to switch to generator only? This time will determine the runtime, i.e., how long the UPS can provide power to all connected devices.
These three things will determine your UPS capacity size requirements. Once you’ve listed everything, you need to calculate the power requirements of all devices versus the battery capacity. The greater the amount of power required, the shorter the UPS runtime.
