Calculation method of UPS uninterruptible power supply time

The UPS uninterruptible power supply can be configured to last for more than several hours.

The backup time of a long-lasting UPS is mainly limited by factors such as battery cost, installation space, and battery recharge time. Generally, in areas with poor power conditions and frequent power outages, a UPS and generator are used to provide power. When a power outage occurs, the UPS is powered by batteries for a period of time. If the power outage lasts for a long time, the backup generator can be started to continue to power the UPS, and then switch to the mains when the mains is restored.

Battery power time calculation:

Battery power supply time is mainly affected by factors such as load size, battery capacity, ambient temperature, battery discharge cut-off voltage, etc. Generally, to calculate the UPS battery power supply time, you can calculate the battery discharge current, and then find out its discharge time based on the battery discharge curve. The battery discharge current can be calculated according to the following empirical formula:

Discharge current = UPS capacity (VA) × power factor / average battery discharge voltage × efficiency

To calculate the actual load discharge time, simply replace the UPS capacity with the actual load capacity.