EA-PSB 10750-120 4U Programmable Bidirectional DC Power Supply / Electronic Load

The EA-PSB 10750-120 4U is a high-performance 30 kW bidirectional power supply that seamlessly integrates the functionality of a programmable DC power supply and a programmable electronic load into a single 4U rack-mount unit. As part of the robust PSB 10000 series, it delivers a wide output range of 0-750 V and 0-120 A, making it an ideal bench power supply and DC load for demanding laboratory and industrial applications. This energy-recovering power supply features advanced recuperating technology, achieving up to 96.5% efficiency in energy recovery mode, which feeds energy back into the AC grid. Equipped with a color touchscreen, integrated function generator (sine, triangle, rectangle, etc.), and extensive remote control interfaces (USB, Ethernet, Analog, optional digital buses), it offers unparalleled flexibility for testing batteries, fuel cells, solar inverters, and power electronics. Its bidirectional capability allows automatic and seamless switching between source (supplying power) and sink (absorbing power) modes, enabling comprehensive testing scenarios like charge/discharge cycles with a single device.

Key Features

• Bidirectional 30 kW Power: Combines a high-power programmable DC power supply and an electronic load in one unit, with automatic sink-source mode switching at the zero crossing.
• High Efficiency & Energy Recovery: Operates as a recuperating DC load with up to 96.5% efficiency, feeding recovered energy back into the AC mains to reduce operating costs and heat dissipation.
• Wide Voltage & Current Range: Provides 0-750 V and 0-120 A output/input, suitable for testing a broad spectrum of devices from components to high-voltage systems.
• Advanced Programmable Functions: Features a built-in function generator for creating complex voltage/current profiles (sine, ramp, arbitrary, PV/FC simulation, battery test, MPP tracking) without external software.
• Scalable System Power: Supports master-slave parallel operation with Share Bus and Master-Slave Bus, allowing up to 64 units to be combined for systems up to 1920 kW total power.
• Comprehensive Control & Interfaces: Offers local control via 5-inch touchscreen and rotary knobs, and remote control via galvanically isolated analog interface (0-5V/0-10V), USB, Ethernet, and optional plug-in modules (CAN, Profibus, Profinet, ModBus TCP, EtherCAT, etc.).
• Robust Protection & Safety: Includes adjustable OVP, OCP, OPP, overtemperature protection, and safety isolation (DC output to case up to ±1500 VDC) to protect both the device and the unit under test.
• Flexible Cooling Options: Available in standard forced air-cooled version or optional water-cooled (WC) version for reduced noise and improved thermal management in dense installations.