Agilent/Keysight RP7931A

The Keysight RP7931A is a 5 kW regenerative DC power supply operating as both a bidirectional power source and electronic load in a single unit. It sources 0–20 VDC at 0–±400 ADC with two-quadrant operation, enabling seamless transitions between sourcing and sinking current. The system returns up to 90% of absorbed energy to the AC grid, achieving 84% efficiency and 0.99 power factor at nominal input and rated power.

Input power requires 200/208 VAC, 3-phase AC supply.

Technical Specifications

• Output voltage: 0–20 VDC


• Output current: 0–±400 ADC


• Output power: 5 kW (single output)


• AC input: 200/208 VAC, 3-phase


• Efficiency: 84%


• Power factor: 0.99 @ nominal input and rated power


• Energy regeneration: up to 90% returned to grid


• Output ripple and noise (CC RMS): 200 mA


• Command processing: sub-millisecond


• Form factor: 3U compact rack-mountable


• Weight: 60 lbs (27.3 kg)

Key Features

• Two-quadrant operation as source and regenerative load


• Autoranging output characteristic for expanded voltage–current combinations


• Fast sub-millisecond command response


• LXI Core LAN interface with web browser remote control


• USB and GPIB connectivity


• Seven user-configurable digital I/O pins


• Parallel operation capability with identical units up to 200 kW total power


• Battery emulation for realistic load testing


• Waveform generation support

Typical Applications

• HEV/EV power converter characterization


• Battery emulation and life testing


• Energy storage system validation


• Power converter efficiency measurement


• Early failure detection under dynamic load conditions

Compatibility & Integration The RP7931A integrates into Keysight's HEV/EV Power Converter Test Solutions suite. Multiple units with identical voltage ratings parallel for scaled power and loading. Standard rack mounting uses 1CP108A flanges with 3U front handle kits and RP7908A rail kits for Keysight instrument racks.