UPS is a pure sine wave with energy storage device, and the inverter asmain component of uninterruptible power supply constant pressure constantvolume. UPS in its early stage of development, only to be used as a backup power supply. Later, because the voltage surge, peak voltage, voltage transients, voltage sag, sustained overvoltage or undervoltage and voltageinterruption of power quality problems, make the electronic computerequipment such as the interference caused by the damaged element,sensitive, information loss, disk program is flushed and other serious consequences, causing huge economic losses. Therefore, UPS has been paid more and more attention, and gradually developed into a power protection system with voltage, frequency, filtering, anti electromagnetic and radio frequency interference, anti surge voltage as a function of.
Currently on the market can buy different kinds of UPS power supply equipment, the pure sine wave UPS is a AC power regulator, and it is alsothe built-in battery charging. Because the UPS design is different, when the city electricity exception or interrupt, pure sine wave UPS immediately in the machine battery electric energy supply computer system through theinverter, the hardware and software in order to maintain normal computer system and to protect the computer from loss.
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