Detailed UPS power supply basic application notes(section 1)

UPS uninterruptible power supply that is the battery (maintenance-free lead-acid batteries, mostly) and the host is connected to the host via an inverter module converts the DC circuit mains system equipment. Mainly used for a single computer, computer network systems, or other power electronic devices to provide a stable and uninterrupted supply of electricity.
First, the function and role of the UPS
Online uninterruptible power supply is an acronym for uninterruptible power supply (Uninterruptible Power System) English name, and it is accompanied by the emergence of the birth of the computer, is one of the common computer peripherals. In fact, UPS is a copolymer containing energy storage device and the inverter for the constant voltage and the amount of the main components of the uninterruptible power supply. UPS in its early stages of development, only be seen as a backup power source. Later, due to voltage surges, voltage spikes, voltage transients, voltage drop, sustained overvoltage or undervoltage or power quality problems such as voltage interruptions, computer systems and other electronic devices by *, causing damage to sensitive components, information is lost, Disk program is obliterated and other serious consequences, causing huge economic losses. Therefore, 3 phase ups suppliers and more attention, and has gradually developed into a voltage, frequency stabilization, filtering, anti-electromagnetic and radio frequency *, anti-power system voltage surge protection and other functions.
Currently on the market you can buy a wide range of ups power supply, the output power ranging from 500VA to 3000kVA. When there is electricity supply when UPS, UPS mains were regulated (220V ± 5%) after powering the computer. At this point the UPS is an AC mains voltage regulator, but it also charge the battery to the machine. UPS designs vary, China ups power supply adapt to different ranges, UPS output voltage of ± 10-15% of the variation in the general computer use is a normal voltage. When utility power is interrupted or abnormal, UPS immediately internal battery power supply through an inverter to convert the computer system in order to maintain the normal operation of the computer system and protect against loss of the computer hardware and software.
Two, UPS classification and characteristics
Backup UPS power supply their work can be divided into two categories and on-line, according to a square wave output waveform can be divided into two kinds of output and the sine wave output. When normal power supply back-up power supply UPS mains, mains and then supplied to the load via the bypass channel through the exchange of direct power transfer switches, inverters inside the machine in a stopped state. This UPS power substantially equivalent to a poor performance of the mains voltage regulator. It is in addition to the magnitude of the mains voltage fluctuations have improved, the frequency of the mains voltage instability, waveform distortion and other adverse affects from the grid * string into essentially no improvement. Only when the mains power supply is interrupted or below 170V, the inverter power supply UPS battery fishes, and to the load voltage, frequency stabilization of AC power. Advantages backup UPS power supply is a high efficiency, low noise, relatively cheap, mainly applicable to electricity market volatility is not, on the quality of power supply is not critical. For more information, please pay attention to the next section or visit www.rendapower.com.