Agilent/Keysight RP7941A

The Keysight RP7941A is a single-output, bi-directional regenerative DC power supply engineered for advanced automated test equipment (ATE) and high-voltage, high-power applications. Operating in two-quadrant mode, it functions simultaneously as a precision power source and regenerative electronic load, returning up to 90% of energy to the grid. The compact 3U-high package integrates source and load capabilities, reducing footprint and integration complexity while delivering sub-millisecond command processing and autoranging output characteristics.

Technical Specifications

• Maximum Voltage Per Output: 20 V


• Maximum Current Per Output: ±400 A


• Maximum Power: 5 kW


• AC Input Voltage: 400/480 VAC, 3-phase


• Number of Outputs: Single output


• Operation Mode: Two-quadrant (source and regenerative load)


• Command Processing Time: ≤1 ms


• Regeneration Efficiency: Up to 90% power recovery to grid


• Output Ripple & Noise: 30–200 mV peak-to-peak (CV); 3–20 mV rms (CV)


• Load Regulation: 1–6 mV (voltage); 13–50 mA (current)


• Resistance Programming: 0 to 0.98 Ω


• Transient Simulation: Step events, arbitrary waveforms (up to 65,535 data points), and lists (up to 512 steps)

Key Features

• Autoranging output expands the power curve across voltage and current combinations


• Battery emulation with programmable internal resistance and charge-state simulation


• Simultaneous voltage and current measurement with averaged or digitized capture modes


• Digitized measurement capability for dynamic current and voltage profile analysis

Typical Applications

• HEV/EV power converter testing


• Energy storage system validation


• DC-DC and DC-AC converter characterization


• High-current battery simulation and testing

Compatibility & Integration

• Connectivity: LAN (LXI Core), USB, and GPIB


• Digital Control Port: Seven user-configurable I/O pins


• Series: RP7900 Series with 400/480 VAC input (200/208 VAC models available for global deployment)


• Weight: 60 lbs (27.3 kg)