EA-PSI 12000-20 3U Programmable DC Power Supply

The EA-PSI 12000-20 3U is a high-performance programmable DC power supply from the EA Elektro Automatik PSI 10000 Series, delivering up to 2000V output voltage, 20A output current, and 15000W output power in a compact 3U 19-inch rack-mountable form factor. With an impressive efficiency of up to 95.5%, this benchtop power supply is engineered for demanding high-voltage industrial and laboratory applications including battery test equipment, battery charger testing, fuel cell simulation, and photovoltaic inverter evaluation. It integrates a versatile function generator capable of generating sine, triangle, rectangle, trapezoidal, arbitrary waveforms, DIN 40839 test pulses, IU tables, simple PV (photovoltaics) simulation, fuel cell (FC) table simulation, and extended PV simulation according to EN 50530 compliance—eliminating additional equipment and reducing test setup time. The unit provides precise regulation with load regulation CV ≤0.05% FS, CC ≤0.1% FS, CP ≤0.3% FS, and display accuracy of voltage ≤0.05% FS, current ≤0.1% FS. It features low ripple specifications of ≤400mV RMS and ≤2400mV P-P (BW 20 MHz) for clean DC output. Built-in remote sensing compensates for voltage drops up to 5% of nominal voltage. Comprehensive protection features include adjustable OVP (0–110% U_Nom), OCP (0–110% I_Nom), OPP (0–110% P_Nom), and overtemperature shutdown. For remote control, the programmable power supply is equipped with USB, Ethernet, and a galvanically isolated analog interface (15-pin D-sub), supporting SCPI and ModBus RTU protocols. The master-slave parallel operation via Share BUS and digital master-slave bus allows up to 64 units to be combined, achieving total system power up to 960 kW. The device also features a color TFT touchscreen HMI, USB host for data logging and sequence programming, and a fan-cooled design with front intake and rear exhaust. With its ability to simulate real-world conditions and generate complex test sequences, the EA-PSI 12000-20 3U is a versatile DC power supply ideal for high-voltage research, development, and production test environments.

Key Features

• High Voltage & Power Output: Provides 0–2000V, 0–20A, 0–15000W (derated to 9000W at 208V AC input) with up to 95.5% efficiency and low ripple of ≤400mV RMS / ≤2400mV P-P.
• Integrated Function Generator: Supports sine, triangle, rectangle, trapezoid, arbitrary waveforms, DIN 40839 test impulse 4, IU table, simple PV, fuel cell (FC) table, and EN 50530 extended PV simulation.
• Precision and Protection: Load regulation CV ≤0.05% FS, CC ≤0.1% FS, CP ≤0.3% FS; adjustable OVP, OCP, OPP; overtemperature protection; remote sense compensation up to 5% U_Nom.
• Versatile Remote Control: Built-in USB, Ethernet, and isolated analog interface (0–5V/0–10V selectable) with SCPI and ModBus RTU support; optional interface modules for CANopen, Profibus, Profinet, ModBus TCP, EtherCAT.
• Scalable Master-Slave Parallel Operation: Connect up to 64 units via Share BUS and digital master-slave bus for total system power up to 960 kW.
• User-Friendly HMI: 5" color TFT touchscreen, two rotary knobs with pushbutton, USB host for data logging and sequence storage, graph display mode.
• Rugged 3U Design: 19" rack-mountable, forced-air cooling (front intake/rear exhaust), operating temperature 0–50°C, storage -20–70°C.
• Wide Application Range: Ideal for high-voltage battery test equipment, battery charger testing, fuel cell simulation, photovoltaic inverter testing (EN 50530), automotive electronics testing (DIN 40839), and general-purpose programmable DC power supply needs.