What is UPS power supply? Because it is relatively rare in our daily life, in fact, UPS power supply is also an uninterruptible power supply, and its function is similar to a battery. If our computer is connected to the UPS power supply, in the event of a sudden power failure, the computer will automatically switch to the UPS power supply to ensure that the data on the computer is not lost.
With the increasing requirements of computer application systems for power supply, UPS has been paid more and more attention, and has gradually developed into a power protection system with functions such as voltage regulation, frequency stabilization, filtering, anti-electromagnetic and radio frequency interference, and anti-voltage surfing. Especially when the line and power supply quality of the power grid is not high, the anti-interference technology is backward, and the computer system has relatively high requirements for power supply, the role of UPS is more obvious.
The protection function of UPS is firstly reflected in the regulation of mains power supply. The input voltage range of UPS is relatively wide, generally from 170V to 250V, and the quality of output power is quite high. The output voltage of backup UPS is 5%. ~8%, the output frequency is stable at 1Hz; as shown in Figure 1, the output voltage of the online UPS is stable within 3%, and the output frequency is stable at 0.5Hz. When the mains is normal, the UPS power supply is equivalent to the AC mains voltage stabilizer; at the same time, the mains charges the battery, which is also equivalent to the charger at this time. In the case of a sudden power failure of the mains, the UPS automatically switches to the battery for power supply, so that the computer can maintain normal operation and protect the software and hardware from damage.
The above is the "function of UPS power supply", the role of UPS power supply is to ensure the continuous operation of electrical equipment when the grid voltage drops or is interrupted. At present, as a backup power supply, UPS is widely used in hospitals, banks, data management and other fields, and plays an irreplaceable role when the grid voltage is interrupted.