How Much Power Will Your UPS Use? Choose the right UPS, uninterruptible power supply, based on your total power consumption, Eaton UPS Selector.
To calculate the load, you add the total watts of each piece of equipment that will be connected to the UPS. For example, if you want the UPS to support a 120W PC, a 30W VPN router, a 960W server, a 280W network switch and a 480W storage device, the total load required is 1870 W.
When the loads are operated in sequence, the UPS capacity is selected based on the summation of rms currents of all the connected loads and the maximum rms peak current of the load as shown in the below formula UPS Capacity in KVA =√3 X VX ((∑1 N I rms)+ Imaxrms-peak)
Factors to Consider. Calculating the UPS battery backup capacity involves taking several important factors into account. Consider the following factors to ensure you select the right UPS system for your power requirements:
Calculate the estimated run time of your UPS using the device load (in watts), power factor, number of batteries, battery voltage, and battery amp hours.
Find the perfect UPS system in two easy steps! Calculate the total power consumption of connected devices then choose a runtime so get your recommendations.
Calculation Formulas. The core calculation for UPS runtime involves determining the total power requirement of all connected loads and then estimating the UPS capacity needed to support these loads for a desired period. The formulas used are:
This post will tell you how to choose the right UPS with required UPS load capacity in the following four steps. Clarify UPS Measurement Units. UPS systems are rated either in kilowatts (kW) or in kilo-volt-amperes (kVA). For example, in a direct current (DC) circuit, watts = volts x amps. In other words, 1 kW = 1 kVA.
There are several ways to calculate the UPS runtime and load. The easiest method is to use the manufacturer''s sizing tools and calculators. Many companies post online calculators on their websites. Once you get the calculation, you can then pick out the UPS unit that matches the measurements.
Details on figuring out the required UPS capacity in four steps, including understanding of UPS measurement units, load calculation, UPS capacity estimation and realistic factors.