EA-PSB 10750-60 3U Programmable Bidirectional DC Power Supply

The EA-PSB 10750-60 3U is a high-performance programmable bidirectional DC power supply from the PSB 10000 3U series, combining a regenerative DC source and an electronic DC load in a compact 3U chassis. Designed for seamless grid-tied operation, it automatically switches between source mode and sink mode with zero delay, recovering up to 95.5% of energy back to the AC grid. With a voltage range of 0–750 V, current up to 60 A, and power up to 15 kW (derated to 9 kW when operating on 208 V AC), this unit delivers precise power for demanding applications such as battery testing, solar panel simulation (PV simulation), and industrial power system validation. It features low output ripple (≤200 mV rms, ≤800 mV pp), high stability, and supports multiple regulation modes: constant voltage (CV), constant current (CC), constant power (CP), and constant resistance (CR) in both source and sink modes.

The built-in function generator offers sine, triangle, rectangle, trapezoid, arbitrary waveform generation, and specialized functions like PV simulation (EN 50530), fuel cell emulation, battery test, and MPP tracking. Sequences and profiles can be loaded or saved via the front USB host. Manual control is intuitive via a 5" color TFT touch screen and two rotary knobs, while remote sensing compensates for voltage drops on DC cables. Standard interfaces include USB, Ethernet, and a galvanically isolated analog interface (0–5 V or 0–10 V selectable). Optional plug-in modules add CAN, CANopen, RS232, Profibus, Profinet, ModBus TCP, or EtherCAT for versatile digital interface control.

For higher power requirements, up to 64 units can be paralleled in a master-slave system using the digital master-slave bus and Share BUS, enabling total power up to 960 kW with true summing of actual values and active current sharing. Comprehensive protections include adjustable OVP, OCP, OPP, OTP, and safety OVP (for 60 V models). The EA-PSB 10750-60 3U is an ideal solution for automated test systems, renewable energy research, and industrial power conversion.

Key Features

• Bidirectional Power with Energy Recovery: Seamlessly switches between source and sink modes, recuperating up to 95.5% of DC energy back to the AC grid, reducing cooling and operational costs.
• Wide Operating Range: 0–750 V output, 0–60 A current, 0–15 kW power (derated to 9 kW at 208 V AC), with high accuracy (≤0.05% voltage, ≤0.1% current) and low ripple.
• Multiple Regulation Modes: CV, CC, CP, and CR modes in both source and sink operation, plus internal resistance simulation for comprehensive testing of batteries, solar panels, and fuel cells.
• Advanced Function Generator: Built-in waveforms (sine, triangle, rectangle, trapezoid, arbitrary) and specialized functions for PV (EN 50530), fuel cell, battery test, and MPP tracking, with USB import/export of sequences.
• Versatile Interfaces: Standard USB, Ethernet, and isolated analog interface; optional CAN, CANopen, RS232, Profibus, Profinet, ModBus TCP, or EtherCAT modules for seamless integration into automated test systems.
• Scalable Master-Slave Parallel Operation: Connect up to 64 units via Share BUS and digital master-slave bus to increase total power to 960 kW, with automatic current sharing and summed actual values.
• Comprehensive Protection: Adjustable OVP, OCP, OPP, OTP, and safety OVP (60 V models) safeguard both the device and connected equipment.
• Intuitive HMI & Data Logging: 5" color TFT touch screen, rotary knobs, and front USB port for logging CSV data, loading profiles, and updating firmware.