PSB 20200-70 Triple Programmable Bidirectional DC Power Supply

The EA‑PSB 20200‑70 Triple is a three‑channel programmable bidirectional DC power supply from the EA‑PSB 20000 Triple series, designed to serve as a bench power supply, a regenerative DC power supply, and a two‑quadrant power supply in one compact 3U form factor. Each of the three independent and galvanically isolated channels delivers an autoranging output from 0‑200 V and 0‑70 A, with a total device power of 0‑15000 W (up to 5 kW per channel). The unit achieves up to 94.5 % efficiency in both source and sink modes, and in regenerative operation it feeds energy back to the grid with up to 96 % efficiency, significantly reducing operational and HVAC costs. It accepts a wide AC input of 208‑480 V ±10 % three‑phase with active PFC (typical 0.99 power factor). Built‑in communication interfaces include USB, 1 Gbit Ethernet, EtherCAT, CAN FD, digital I/O, and a Share‑Bus for parallel operation of up to eight units, reaching 120 kW total power. A flexible function generator supports sine, triangle, square, trapezoid, ramp, and arbitrary waveforms, and enables PV solar panel simulation per DIN EN 50530 as well as fuel cell simulation. Housed in a 19‑inch 3U rack enclosure (668 mm depth, 32.8 kg), the PSB 20200‑70 Triple is ideal for computer power supply testing, battery simulation, and automated test systems requiring 1 ms communication speed and precise bidirectional power flow.

Key Features

• Three Independent Bidirectional Channels: Fully isolated 200 V / 70 A outputs with autoranging, providing up to 5 kW per channel for parallel testing of motors, inverters, and on‑board chargers.
• High Efficiency Regenerative Operation: Sink mode energy recovery back to the grid with up to 96 % efficiency, reducing heat and HVAC costs; 94.5 % source/sink efficiency.
• Wide AC Input and Power Factor Correction: Operates from 208 V to 480 V three‑phase AC, with active PFC (0.99 typical) and automatic voltage adaptation.
• Comprehensive Connectivity: Built‑in USB, 1 Gbit Ethernet, EtherCAT, CAN FD, Share‑Bus, and digital I/O for seamless integration into industrial networks and test systems.
• Advanced Function Generator and Simulation: Integrated sine, triangle, square, trapezoid, ramp, and arbitrary waveforms; supports PV panel simulation per DIN EN 50530 and fuel cell emulation.
• Scalable Parallel Operation: Master‑slave bus and Share‑Bus allow up to 8 units to be paralleled, achieving 120 kW total power with balanced load sharing.
• Compact 3U Form Factor: Space‑saving 19‑inch rack design (3U height, 668 mm depth) with forced air cooling and intuitive front panel control via TFT interface and rotary knobs.