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在以交流电压运行的控制系统中，交流 UPS 最为合适。离线或备用拓扑结构非常简单明了。这些产品价格低廉，因此是最常见的交流 UPS 类型。在正常情况下，离线 UPS 将主电源从输入端转移到输出端，

安装前应检查稳压器的容量、负载是否匹配合理，市电电压是否在稳压器的允许范围内，稳压器的输出电压是否满足设备要求。

Stabilized voltage power supply and switching power supply are different types of power supplies, and there are obvious differences between them. A regulated power supply is a type of power supply with a stable output voltage, which can effectively control the fluctuation range of the output voltage and ensure the normal operation of the circuit;