The PSD Power Supply System is a redundantly configured rectifier with an integrated UPS unit. The main function is to power and control the Platform Screen Doors control system and related secondary system. The typical PSD power supply system consists of two identical rectifier units, which ensure the redundancy of the system, as well as a distribution unit. The distributing unit serves to distribute the voltages provided according to the requirements. Thanks to the integrated UPS unit, the power supply can be used to control the Platform Screen Doors in their full functionality, even when grid breaks. The voltage level as well as the capacity of the UPS are dimensioned according to customer requirements.