The Keysight RP7945A is a single-output bidirectional regenerative DC power supply engineered for high-voltage, high-power testing in automotive and energy applications. Operating in two-quadrant mode, it sources and sinks current without output disruption, returning up to 90% of absorbed energy to the grid. The unit delivers 80 V at ±250 A (10 kW maximum) from standard 400/480 VAC, 3-phase input, with efficiency exceeding 80% (typically 85% at full power) and THD of 2% typical at full load. Its autoranging output characteristic expands the usable power curve beyond traditional rectangular limits, enabling more voltage and current combinations for demanding converter and battery test scenarios.
Technical Specifications
• Output: 80 V maximum, ±250 A maximum, 10 kW maximum power
• AC Input: 400/480 VAC, 3-phase; 17.3 A per phase @ 400 VAC
• Efficiency: >80%, typically 85% at rated power; regenerative efficiency up to 90%
• Power Factor: 0.99 @ nominal input and rated power
• THD: Minimum 2% (typical) at full load
• Form Factor: 3U rack height, 70 lbs (31.8 kg)
– Key Features
• Two-quadrant operation with sub-millisecond command processing
• Battery emulation mode simulates internal resistance across charge states
• Transient simulation: step functions, arbitrary waveforms (up to 65,535 points, 10.24 µs to 0.30 s dwell), and 512-step lists
• Automatic regenerative operation with anti-islanding grid detection
• Parallel configuration supports up to 200 kW aggregate power
• Autoranging output expands power curve for flexible voltage/current combinations
– Typical Applications
• HEV/EV power converter testing
• Battery characterization and early failure detection
• High-voltage, high-power device validation
• Energy recovery and load simulation
– Compatibility & Integration
• LAN (LXI Core), USB 2.0, GPIB interfaces
