1. Different application occasions: DC panel is mainly used to provide operating power or control power for switch cabinet, comprehensive protection device, etc.; The UPS provides backup power for the equipment room and computers.

2. the principle is different: DC panel is the AC rectifier to direct current, power supply for the external load; The principle of the UPS is to first rectify the AC power into DC power, and then through the inverter unit, the DC power into AC power to supply external loads. Both are powered externally by their batteries when the mains fails.

Different functions: the role of DC panel is to quickly provide reliable backup power supply through double power switches when the power supply is interrupted, and to supply the operating power supply of high voltage switches. The role of the UPS is to convert DC power to AC power for DCS or other devices, such as computers.