数据机房UPS输入/输出及电涌过电压防护设计

Design of UPS Input / Output and Surge Overvoltage Protection in Data Room

介绍了数据机房UPS的电气构成及容量选择,分析了UPS输入/输出和电涌过电压防护设计。指出市电发电产生故障时,自动转换开关能在较短的时间内自动切换到备用电路操作;静态切换系统安装在负载设备前端,UPS失效后利用其不间断切换市电功能来保证电源设备的供电。UPS采用压敏电阻电涌保护器对瞬时过电压的电涌进行保护,瞬变电压抑制二极管通过高速限压去除操作过电压、电涌电压干扰,从而为精密设备提供防护。

This paper introduced the electric composition and capacity selection of UPS in data room. The designs of UPS input/output and surge overvoltage protection were analyzed. It is pointed out that the automatic transfer switch （ATS） automatically switches to the standby circuit operation during a shorter time, when the mains supply is faulty. The static transfer switch （STS） installed in the front end of load equipments, ensures the power supply of power supply equipment when UPS is out of operation. The metal-oxide varistor surge protective device （ SPD ） prevent the transient overvohage surge ,and the transient voltage suppressor（TVS） removes the disturbance of operating overvoltage and surge voltage by the high-speed voltage limiting which provides the protection of precision equipments.