EL4900 Series Regenerative DC Electronic Load

March 13, 2026

Keysight introduces the EL4900 Series Regenerative DC Electronic Loads, delivering precision and efficiency for power device testing, The regenerative feature returns up to 95% of absorbed energy to the grid, reducing energy and cooling costs without disrupting grid performance. Paired with the Pathwave Advanced Power Suite software, the EL4900 Series provides robust automation of complex test scenarios, delivering deeper insights and faster analysis.

 

Key Features

Regenerative Technology

  • Returns up to 95% of absorbed energy back to the grid
  • Drastically reduces energy consumption and cooling costs
  • Green grid synchronization without performance disruption

Flexible Programming Resolution

  • Voltage: 1 mV to 10 mV
  • Current: 1 mA to 10 mA (10 mA on 12 kW model)

Line Regulation

  • Voltage: ≤ 16 mV to 160 mV
  • Current: ≤ 4.8 mA to 144 mA
Keysight el4900 FI

High Precision & Accuracy

  • Voltage Programming/Readback Accuracy: 0.03% + 24 mV to 240 mV
  • Current Readback Accuracy: 0.1% + 8 mA to 380 mA
  • Load Regulation (Voltage): ≤ 16 mV to 160 mV
  • Load Regulation (Current): ≤ 8 mA to 240 mA

Fast Transient Response

  • Command processing time: ≤ 0.1 ms
  • Ideal for dynamic load simulations and transient analysis

Multiple Operating Modes

  • Constant Current (CC)
  • Constant Voltage (CV)
  • Constant Power (CP)
  • Constant Resistance (CR)
  • Hybrid Modes: CV+CC, CV+CR, CC+CR
  • Auto Mode: CC+CV+CP+CR

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