The Keysight RP7942A is a single-output, bi-directional regenerative DC power supply operating in two-quadrant mode for source and sink functionality. It delivers 80 V maximum output, ±125 A current, and 5 kW maximum power while returning up to 90% of energy to the grid during regenerative operation. Designed for HEV/EV power converter testing, this 3U instrument combines fast transient simulation, battery emulation with programmable internal resistance, and simultaneous voltage/current measurement in a compact 773 × 427 × 132.6 mm package.
– Technical Specifications
• Output Voltage: 0–80 V maximum
• Output Current: ±125 A maximum
• Maximum Power: 5 kW
• AC Input: 400–480 V, 3-phase, ±10% tolerance
• Power Factor: 0.99
• Efficiency: >80% typical (up to 91.5% within RP7900 series)
• Regeneration Efficiency: 90% return to grid
• THD: 2% typical at full load during regenerative operation
• Form Factor: 3U rack, 27.3 kg
– Key Features
• Two-quadrant operation with uninterrupted sourcing/sinking transitions
• Autoranging output expands power curve beyond rectangular limits
• Battery emulation with adjustable internal resistance for state-of-charge characterization
• Step function and constant dwell arbitrary waveforms up to 65,535 data points
• List function mode with 512 steps and trigger-paced advancement
• Simultaneous voltage and current measurement with built-in calculations
– Typical Applications
• High-voltage battery pack testing and early failure detection
• Electric vehicle power converter validation
• Transient response characterization under dynamic load conditions
• Regenerative energy capture and grid return scenarios
– Compatibility & Integration
• LXI Core compliant LAN, USB 2.0, GPIB interfaces
• Web browser remote control via LAN
• Seven user-configurable I/O pins on rear panel
• Programmable via standard instrument protocols
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