The Keysight RP7946A is a single-output, bidirectional regenerative DC power system designed for high-power testing in automotive, energy, and HEV/EV converter applications. Operating as both a precision power source and electronic load, it returns up to 90% of consumed power to the grid, reducing operational costs and cooling requirements. The unit delivers 10 kW across 0–160 V and ±125 A with autoranging output, enabling flexible voltage and current combinations. Low output ripple (12 mV rms, 120 mV peak-to-peak) and fast transient response (400 µs recovery) support demanding test profiles. An integrated arbitrary function generator simulates complex transients and user-defined waveforms with up to 65,535 data points, plus list functionality for multi-step sequences. Seamless transitions between source and sink modes eliminate output disruptions during bidirectional operation.
Technical Specifications
• Output: 0–160 V, 0–±125 A, 10 kW
• AC Input: 400–480 VAC (±10%), 3-phase, power factor ≥0.99
• Efficiency: Up to 91.5%; regenerative return up to 90%
• Output Ripple & Noise: 12 mV rms / 120 mV peak-to-peak
• Load Regulation: 4 mV (voltage), 8 mA (current)
• Voltage Accuracy: 0.02% + 8 mV
• Current Accuracy: 0.03% + 13 mA
• Transient Recovery: 400 µs (50% to 100% step)
• Form Factor: 3U rack height, 31.8 kg
– Key Features
• Two-quadrant, bidirectional source/sink operation
• Autoranging output for extended power curve coverage
• Arbitrary waveform generation: up to 65,535 data points with constant dwell (10.24 µs to 0.30 s)
• Step functionality for triggered voltage/current events
• List mode: sequences of up to 512 steps
• Parallel connection: up to 15 units
• Seven user-configurable I/O pins for external control
– Compatibility & Integration
• LXI Core 2011 compliant LAN interface
• USB 2.0 and GPIB connectivity
• Built-in web interface for remote operation
• Part of RP7900 Series ecosystem
