EA-PS 10920-125 4U 30 kW Programmable DC Power Supply

The EA-PS 10920-125 4U is a high-performance, 30 kW programmable DC power supply unit from the PS 10000 4U Series, designed for demanding industrial testing, research, and development applications such as high-voltage device testing and photovoltaic (PV) simulation. This benchtop/rack-mount power supply delivers precise and stable DC power with a wide output range (920V, 125A), supporting operation as both a programmable DC voltage/current source and an adjustable electronic DC load (sink). It offers four programmable operating modes: constant voltage (CV), constant current (CC), constant power (CP), and internal resistance regulation (CR). Standard features include remote control via built-in USB and Ethernet ports, a galvanically isolated analog interface (0-5V/0-10V), and support for optional digital interface modules (CAN, CANopen, Profibus, ProfiNet, ModBus TCP, EtherCAT, etc.). For high-current applications, up to 64 identical units can be connected in a true master-slave parallel configuration using the integrated Share BUS and digital Master-Slave bus, creating systems with up to 1920 kW total power while maintaining current sharing and centralized control. The unit is built with robust protection features including adjustable overvoltage (OVP), overcurrent (OCP), and overpower (OPP) protection, plus overtemperature (OT) and power fail (PF) alarms. It complies with safety standards for series connection and includes the SEMI F47 feature to withstand specified AC voltage sags without interruption. Data logging is facilitated via a front USB port, saving CSV files to a designated "HMI_FILES" folder on a FAT32-formatted USB stick.

Key Features

• High Power & Flexibility: 30 kW rated power (derates to 18 kW on 208V AC input). Operates as a programmable DC source or sink, ideal for high-voltage testing and PV simulation.
• Multiple Control Modes: Programmable Constant Voltage (CV), Constant Current (CC), Constant Power (CP), and Internal Resistance (CR) regulation.
• Comprehensive Remote Control: Built-in USB and Ethernet ports, isolated analog interface (DB15), and optional plug-in digital interface modules (CANopen, ProfiNet, ModBus TCP, EtherCAT, etc.) for seamless integration.
• Master-Slave Parallel Operation: Connect up to 64 units via Share BUS and digital Master-Slave bus for scalable high-power systems (up to 1920 kW) with centralized control and current balancing.
• Advanced Protection & Safety: User-adjustable OVP, OCP, OPP; hardware-based OT, PF, and Safety OVP (60V models). Compliant with insulation requirements for safe series connection of units.
• Industrial Reliability Features: SEMI F47 compliance for ride-through during AC voltage sags. Comprehensive alarm system with optical, acoustic, and electronic signaling.
• Data Logging & User Interface: 5" color TFT touchscreen HMI with rotary encoders. Front USB port for logging operational data (U, I, P, status) to CSV files stored in the "HMI_FILES" folder.
• Robust Construction: 4U 19" rack-mount design. Available in standard air-cooled or optional water-cooled (WC) versions for reduced acoustic noise and better thermal management in confined spaces.