Agilent/Keysight RP7945A

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