不间断电源在屏蔽门系统中的应用

屏蔽门采用1级负荷2路供电，同时配置不间断电源（uPS）作为备用电源，利用双电源切换装置对主备2路电源自动切换，正常状态时由主电源供电，当主电源断电、相电压过压、欠压或缺相时，自动切换到备用电源供电。当主电源恢复正常后，自动返回主电源供电。屏蔽门系统电源为其控制部分和驱动部分供电。不间断电源连接在输入电源和负载之间，为屏蔽门提供稳定和不间断的电源。

Application of UPS in Platform Screen Door System

The platform screen door with class I load of 2-way power supply has uninterruptible power supply （UPS） as a backup power at the same time, and uses dual power switching set automatically switching active and standby power. In the normal state main power is the power supply. When main power supply is blackout, or phase voltage over- voltage, or under-voltage or phase missing, UPS automatically switch to standby power supply. When main power is restored to normal, it automatically returns to main power supply. The platform screen door system power supplies power for its control part and driving part. The UPS is connected between input power and load, providing stable and uninterrupted power supply for platform screen door.