EA-PSI 10500-30 3U 5000W Programmable DC Power Supply

The EA-PSI 10500-30 3U is a high-performance programmable DC power supply from the EA-PSI 10000 series, designed in a compact 3U form factor for demanding industrial and laboratory applications. It delivers a variable output voltage from 0 to 500V, output current from 0 to 30A, and output power up to 5000W (derated to 3000W when operated at 208V AC input). With an impressive efficiency of up to 95.5% at full load, this power supply minimizes energy loss and heat generation. Its low ripple characteristics—≤70mV RMS and ≤350mV P-P (20 MHz bandwidth)—ensure clean and stable power for sensitive loads. The unit features an adjustable internal resistance range of 0.6 Ω to 1000 Ω and an output capacitance of 180 µF, making it suitable for simulating real-world battery and fuel cell behavior.

Built with advanced digital control, the EA-PSI 10500-30 3U integrates a versatile function generator capable of producing sine, triangle, rectangle, trapezoid, ramp, and arbitrary waveforms, as well as photovoltaic (PV) and fuel cell (FC) curve simulation according to EN 50530. This eliminates the need for external signal generators and simplifies test setups for applications such as battery charger testing, on-board charger evaluation, and automated test systems. Remote sensing compensates for voltage drops in load leads, ensuring accurate voltage regulation at the load point.

The power supply offers multiple control options: manual operation via the intuitive 5" color TFT touchscreen with two rotary knobs, and remote control through built-in USB, Ethernet, and a galvanically isolated analog interface. Optional plug-in modules add support for fieldbus protocols like Profibus, Profinet, ModBus TCP, CANopen, and EtherCAT, enabling seamless integration into industrial automation networks. For higher power requirements, up to 64 units can be connected in master-slave parallel operation, sharing the load equally via the Share BUS and digital master-slave bus, achieving total system power up to 960 kW.

Safety and reliability are paramount, with comprehensive protection features including overvoltage (OVP), overcurrent (OCP), overpower (OPP), overtemperature (OT), and power fail (PF) alarms. The unit also supports user-defined events (UVD, OVD, UCD, OCD, OPD) for custom monitoring. The DC output is fully floating, allowing either pole to be grounded, with insulation ratings of ±1500 V DC for the negative pole and +2000 V DC for the positive pole against PE.

Key Features

• High Performance Output: 0-500V, 0-30A, 5000W (derated to 3000W at 208V AC) with ≤70mV RMS / ≤350mV P-P ripple, 95.5% efficiency, and 180µF output capacitance.
• Integrated Function Generator: Built-in sine, triangle, rectangle, trapezoid, ramp, arbitrary, and standard-based PV (EN 50530) and fuel cell curve simulation – eliminates external equipment.
• Flexible Resistance Simulation: Adjustable internal resistance from 0.6Ω to 1000Ω, ideal for battery and fuel cell testing.
• Master-Slave Parallel Operation: Connect up to 64 units for total power up to 960 kW with automatic current sharing via Share BUS and digital bus.
• Comprehensive Interfaces: Standard USB, Ethernet, and isolated analog interface; optional fieldbus modules (Profibus, Profinet, ModBus TCP, CANopen, EtherCAT).
• Intuitive Touch Control: 5" color TFT touchscreen with two rotary knobs for easy manual operation; graphical display of actual values and waveforms.
• Advanced Protection & Monitoring: Adjustable OVP, OCP, OPP, OT, PF alarms plus user-defined events; remote sensing compensates for cable losses.
• Compact 3U Design: Space-saving 19" rackmount chassis, high power density, and forced-air cooling for reliable operation.