POWER SUPPLY SYSTEM

A power supply system for galvanically isolating an input voltage, which is present on an input side of the power supply system and which is hazardous when touched, from a touchable output voltage, which is to be provided on an output side of the power supply system, and to provide a constant output voltage on the output side, the power supply system including: at least two individual components, at least one individual component of the at least two individual components providing electrical energy, and a predetermined plurality of operating parameters for each individual component of the at least two individual components being monitorable by a sensor unit or a plurality of sensor units; and a monitoring unit in which: at least one operating parameter of the plurality of operating parameters of each individual component is comparable to a stored corresponding reference operating parameter.