How long does UPS power supply last?

How long does UPS power supply last? The power supply time of UPS is firstly related to the capacity of UPS. The larger the capacity, the longer the power supply time. Secondly, it is related to the number of power consuming devices connected to UPS. The greater the power consumption, the shorter the time. In principle, when the capacity is unchanged, the smaller the power of the electrical appliances, the longer the use time; There will also be. When the power of the electrical appliances is fixed, the larger the UPS battery capacity is, the longer the time will be.

How long does UPS power supply last?

1. Influence of UPS battery quantity on power supply duration

The number of UPS batteries is in direct proportion to the power supply duration, that is, the more batteries used, the longer the UPS can provide power supply after power failure. Therefore, it is recommended to confirm the power size and power supply duration required by the customer before purchasing, so that the UPS power supply manufacturer can decide the number of UPS batteries to use.

2. Impact of UPS load on power supply duration

The power supply duration of UPS is not only related to the number of batteries, but also has a great relationship with the load. The manufacturer of UPS power supply said that if the load of industrial UPS power supply is large, the power supply will need more power, and the corresponding number of batteries will also increase. If the battery remains unchanged, the power supply time will also be shortened.

3. Relationship between UPS battery quantity and load power

Under the condition that the power supply duration remains unchanged, if the UPS load increases, the UPS battery needs to be added. If the battery mileage is not increased, the backup power supply duration provided by UPS will be shortened.

The length of UPS backup time is determined by the energy storage device of UPS. Nowadays, UPS generally uses a fully sealed maintenance free lead-acid battery as the energy storage device. The battery capacity is reflected by the indicator AH, which means the time for discharging according to the specified current. Calculation method of UPS backup delay time: (battery capacity X battery working voltage)/equipment power=extendable time (hours).

UPS of small home computers can generally last for 20 minutes. Large kilowatt UPS can be equipped with UPS battery pack according to the requirements, generally more than 1 hour to 10 hours.. Generally, UPS batteries are equipped according to the full load power supply of UPS output power for one hour. You only need to use one computer. The maximum power of a home computer is 300W, and the equipment with 500W (considering the large starting current) can meet the power supply conditions for two hours. You need to power for a long time, and increase the backup battery. According to the battery capacity provided, double the battery and provide power for two hours.

In general, how long the UPS power supply provides for the load is mainly determined by the load power of the load equipment to the UPS power supply, the total battery capacity of the UPS power supply and other factors. If the longer the power supply provided by the UPS is required, the number of batteries in the UPS should be increased accordingly. The duration of UPS power supply depends on the battery you configure. The more batteries, the greater the AH, and the longer the delay.

UPS power supply consists of host and battery. The time delay (power supply) depends on the capacity of the battery and the load. The battery with standard configuration can only be used for emergency processing after the mains power interruption for about 5 minutes. A long delay is required. The merchant will calculate and determine the delay time according to the specific delay time, such as 2 hours and 4 hours. Determining how much time is extended refers to the time when the battery can be powered when it is fully loaded. For example, power can be supplied for 2 hours under full load and 4 hours under half load.

The battery power supply time is mainly affected by the load, battery capacity, ambient temperature, battery discharge cut-off voltage and other factors. Generally, the UPS battery power supply time can be calculated to calculate the battery discharge current, and then the discharge time can be found out according to the battery discharge curve.

In general, the power supply market of UPS is related to the number of batteries and load power. Therefore, UPS manufacturers suggest that you inform the basic parameters of the sales power supply equipment before purchasing, so as to facilitate the selection of appropriate machines. The specific power supply time is different for different brands of UPS. The external connection of UPS power supply to a large capacity battery pack plays an important role in extending the power supply time.