The DC laboratory power supplies in the PS 10000 series from EA Elektro-Automatik convert the energy from the grid into a regulated DC voltage with an efficiency of over 96%. The PSI 10000 series includes single and three phase units, which, together with the wide input range, allows use with practically all global mains voltages. The DC voltage and current are directed by the application and the spectrum ranges from 0-60V to 0-2000V and from 0-6A upto 0-1000A in a single device. The DC supply operates as a flexible output stage with a constant power characteristic (autoranging), and a wide voltage, current and power range. To achieve higher power and current all units are equipped with a master-slave bus. This enables up to 64 parallel connected devices to be combined into one system which can provide up to 1920 W and 64000 A. Such a system works as a single unit and can use different power classes, only the voltage class must remain constant. In this way a user can construct a 75kW system from two 30 kW and one 15 kW devices from the PS 10000 range. Furthermore, typical laboratory functionally is provided. This includes an extensive function generator, alarm and warning management, assorted interface and ports, software solutions and many more functions.