How to Choose a Right UPS Power Supply?

What type of UPS power supply should I equip? According to the situation of the equipment, the power consumption environment and the purpose of power protection, a suitable UPS can be selected. For low-power equipment with a built-in switching power supply, a backup UPS can generally be used. Online or online interactive UPS should be used in areas with harsh electrical environments. For equipment that does not allow intermittent time or requires sine wave AC power at all times, only an online uninterruptible power supply can be used.

How much power UPS should I choose?

• First of all, you need to determine the power of your device. Generally speaking, the power of ordinary PCs or industrial computers is about 200W, Apple products are about 300W, and servers are between 300W and 600W. The power value of other equipment can refer to in the equipment manual.
• Secondly, it should be understood that there are two ways to express the rated power of the UPS, the apparent power (VA) and the actual output power (W). This difference is caused by the existence of reactive power. The conversion relationship between the two is apparent power * power factor = actual output power. The power factor of backup type and online interactive type is between 0.5 and 0.7, and the power factor of online type is generally 0.8. The actual output power of the UPS should be used as the basis for matching the UPS to the equipment. Some dealers will confuse the difference between VA and W intentionally or unintentionally, please pay attention to this point.

What determines the UPS backup time?

This is determined by the energy storage device of the UPS. The current UPS generally uses a fully sealed maintenance-free lead-acid battery as an energy storage device. The size of the battery capacity is represented by the indicator "ampere-hour (AH)", which means the discharge time according to the specified current. A battery with the same voltage has a larger capacity with a larger amp-hour, and a battery with the same amp-hour has a larger capacity with a higher voltage. The capacity of the battery is usually expressed in terms of voltage and ampere-hours, such as 12V/7AH, 12V/24AH, 12V/65AH, and 12V/100AH.

The backup UPS generally has a built-in 4AH or 7AH battery, and its backup time is taught. Online and online interactive UPS have standard models with built-in 7AH batteries, and long-term models with external large-capacity batteries. Users can determine how much capacity the batteries are equipped with according to the required backup time. The battery is an important part of the UPS, and its quality is directly related to the normal use of the UPS, so the ATO genuine battery with quality assurance should be selected.

Tips for using the UPS

1. The operating environment of uninterruptible power supplies should be well ventilated and clean to facilitate heat dissipation.
2. Do not bring inductive loads to avoid damage, such as money counters, fluorescent lamps, air conditioners, etc.
3. It is best to control the output load of UPS at about 60%.
4. It should be avoided that the UPS is loaded too lightly, which may cause the deep discharge of the battery and reduce the service life of the battery.
5. After the UPS is discharged, it should be charged in time to avoid damage to the battery due to excessive self-discharge. But proper discharge helps to activate the battery.
6. For the UPS in the network room, since most networks work 24 hours a day, the UPS must also run all day.
7. For most small UPS, turn on the UPS when going to get off work, avoid starting with the load when starting up, and turn off the UPS when going off work.