机房ups供电系统设计方案（Design scheme of UPS power supply system in computer room）.docVIP

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机房ups供电系统设计方案（Design scheme of UPS power supply system in computer room）.doc

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机房ups供电系统设计方案（Design scheme of UPS power supply system in computer room）

机房ups供电系统设计方案（Design scheme of UPS power supply system in computer room） Discussion on design scheme of UPS power supply system in computer room 1 Introduction With the wide application of computer in communication system, the quality of power supply is becoming more and more demanding. Therefore, the installation of UPS (uninterruptible power supply) power supply system in communication room is becoming more and more common. A well-designed UPS power supply system can provide high quality power supply to the load. However, in practical applications, many problems are often caused by the UPS power supply system itself. Therefore, how to establish a reasonable and safe UPS power supply system has become a concern. This article will discuss the problem from the point of view of UPS power supply system design. 2 requirements for UPS front stage power supply system The UPS can provide high quality power supply with high precision, stable frequency and small waveform distortion to the load, and the power supply can be disconnected without any static bypass. But to do this, its pre supply quality can not be ignored. We should consider the following aspects when designing the power supply system in front of the communication room: (1) the quality of the power supply of the pre supply system should not be too bad, the voltage and frequency should be stable in the normal range. Generally speaking, a large capacity UPS host should have a voltage range of 380V + 15%. Voltage is too low, will make UPS battery frequently discharge, and ultimately due to the long-term undervoltage charging state and greatly shorten its service life, on the contrary, the voltage is too high, it is easy to cause inverter damage. The bypass input, the voltage and frequency fluctuation also has the certain range, generally rated voltage rated frequency of + 10%, + 15%, if the power range is too large, will cause the switch between the inverter and the bypass power supply is prohibited or intermittent