Regenerative DC Power

ESDr Series

Bidirectional programmable DC power supply with source and grid-regenerative load functions.

ESDr Series in an energized power-testing environment
Product visual · energized

The ESDr Series is a high-performance bidirectional DC power supply with source and load capability. Using PFC rectification, LLC resonant and Buck-Boost conversion, it provides wide-range stable DC output and regenerates load energy back to the grid. Used for electronics testing, PV inverter testing, battery simulation and charge/discharge testing.

Key features

  • Grid regeneration in load mode
  • Wide output range (3x conventional matrix supplies)
  • Power factor >0.99, efficiency up to 93%
  • CV / CC / CP modes
  • PV I-V simulation (EN 50530, Sandia)
  • Battery curve simulation
  • Voltage accuracy <0.05% F.S, current <0.10% F.S
  • Parallel up to 10 units
  • RS232, RS485, CAN, USB, LAN; Modbus, SCPI
  • OVP, OCP, OTP protections