Agilent/Keysight RP7961A

The Keysight RP7961A is a bidirectional, regenerative DC power supply engineered for high-power test applications requiring both source and sink capability. Operating as a two-quadrant system, it sources and sinks power simultaneously, making it ideal for testing energy storage devices, converters, and automotive powertrains. The unit regenerates up to 90% of power back to the grid, reducing operational energy costs and cooling requirements while maintaining measurement accuracy across sensitive test setups.

Technical Specifications

Input Power: 400/480 VAC, 3-phase (±10% tolerance)
Output Voltage: 0–500 V with autoranging
Output Current: ±20 A
Maximum Power: 5 kW
Output Configuration: Two-quadrant (source and sink)
Power Factor: 0.99
Efficiency: >80%
Line Regulation: <10 µV (voltage), <10 µA (current)
Physical Format: 3U, 763 × 427 × 132.6 mm, 27.3 kg

Key Features

• Autoranging output expands the voltage–current operating envelope


• Sub-millisecond command processing (≤1 ms) with fast transient response - voltage rise/fall in 160 µs, current rise/fall in 150 µs


• Voltage settling to 0.1% in 4 ms; current settling to 0.1% in 3.5 ms


• Integrated arbitrary function generator for transient simulation (step, constant dwell, list modes with up to 65,535 data points)


• Simultaneous voltage and current measurement in averaged or digitized modes


• Battery emulation with programmable resistance (model dependent, up to 50 Ω)


• Parallel connection capability - stack up to 200 kW power or loading


• Integrated safety features for device and user protection

Typical Applications

• Energy storage system validation and battery testing


• DC/DC and AC/DC converter characterization


• Automotive start-stop and HEV/EV power converter testing


• Transient response and dynamic load simulation

Compatibility & Integration LAN (LXI Core), USB, and GPIB interfaces enable integration into automated test environments. Built-in web interface supports remote control via browser and LAN connection.