Regenerative DC Power
ESDr Series
Bidirectional programmable DC power supply with source and grid-regenerative load functions.

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