UPS(Uninterruptible Power System/Uninterruptible Power Supply),即不间断电源,是将蓄电池(多为铅酸免维护蓄电池)与主机相连接,通过主机逆变器等模块电路将直流电转换成市电的系统设备。主要用于给单台计算机、计算机网络系统或其它电力电子设备如电磁阀、压力变送器等提供稳定、不间断的电力供应。当市电输入正常时,UPS将市电稳压后供应给负载 Uninterruptible Power System (UPS) is an uninterruptible power supply (UPS) that connects a battery (often a lead-acid free maintenance battery) to a host computer and converts DC power into utility power through module circuits such as a host inverter . Mainly used to provide a stable and uninterrupted power supply to a single computer, computer network system or other power electronic equipment such as solenoid valves, pressure transmitters and the like. When the mains input is normal, the UPS will supply the regulated power supply to the load