UPS (Uninterruptible Power System), is a kind of uninterruptible power supply with a containing energy storage device and uses the inverter as the major component of constant voltage and constant frequency. It is mainly used to provide uninterrupted power supply for a single computer, computer network system, or other power electronic devices. When the mains input is normal, uninterrupted power supply mains regulator supply to the load used, this time the UPS is a AC mains voltage regulators, but also to charge the battery inside; When mains interrupt (forced outage) when, UPS immediately inside battery power, through the inverter to convert the method to load continue to supply 220V AC load to maintain a normal work and protect the load soft and hardware from damage. UPS devices usually provide protection voltage is too large and the voltage is too low.
Types of Uninterruptible Power Supply
According to different principles, UPS can be divided into UPS backup system,online ups systems and online interactive UPS system three categories. The most commonly used are back-up UPS, such as the HO series and SD series, it has an automatic voltage regulator, power protection UPS the most basic and most important function, although generally around 10ms conversion time, the inverter output AC of the United States Santak Castle Series Rackmount UPS is square wave rather than a sine wave, but the structure is simple and cheap, high reliability, it is widely used in areas such as computer, peripherals, POS machines. Line UPS is a more complex structure, but perfect performance, can solve all power problems, such as Stone PS Series, its distinguishing feature is the ability to continue to zero interrupt output pure sine wave AC, can solve the spikes, surges, frequency drift, and all the Power problems; usually applied due to the need for greater investment in key equipment and network center harsh environment of electricity requirements.
Function of Uninterruptible Power Supply
As one of the protective power equipments, the performance parameters of UPS system is of great significance, there should be a major consideration when we buy it. Mains voltage wide input range, the ability to use mains (decrease battery discharge). Output voltage, frequency range, it indicates that the ability to adjust mains is strong and output is stable. The waveform distortion rate is used to measure the waveform of the stability of output voltage, and the voltage stability indicates the output voltage stability when UPS suddenly adds from zero loads to the full loads. Characterization of UPS performance parameters determines the ability to protect the load and the mains utilization. The better the pesrformance, the stronger the protect ability.
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