0-500V adjustable voltage, ±30A bidirectional current, and 5000W autoranging power with regenerative energy recovery up to 95.5% in a compact 3U 19" rack chassis. Built-in function generator, internal resistance simulation, battery test, PV/fuel cell simulation, MPPT tracking, touchscreen HMI, analog & digital remote control, master-slave parallel up to 960kW, and full protections. Ideal for EV battery module testing, fuel cell stack evaluation, solar inverter MPPT validation, and DC grid simulation.

Cooling

Water Cooled (Optional)

Output Current

±0-30A

Output Power

±5000W

Output Voltage

0-500V

Type

Characteristic Curve

U/I/P autoranging

External Control

Analogue 0-5V/0-10V, USB, LAN, Modbus TCP, Profibus, DeviceNet, RS232, CAN

Housing

19" rack

Human Interface

Touch panel & Menu

Special Feature

Function Generator, Resistance, Sink

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Description

30-Second Fit Check

Output: 0-500V, ±30A, 5000W with true autoranging (source and sink).
AC input: 380-480V ±10%, 3-phase, 45-66Hz. On 208V input, derates to 3000W.
Energy recovery efficiency: up to 95.5% in sink mode.
Ripple: ≤70mV rms / ≤350mV pp (CV mode, 300 kHz / 20 MHz BW).
Protections: Adjustable OVP, OCP, OPP, plus OT, PF, SF.
Built-in function generator, battery test, MPPT tracking, and PV/fuel cell simulation.
Cooling: Forced air (standard) or optional water cooling for silent operation.

What It Is + Why It Matters

True bidirectional operation: Seamless transition between source and regenerative sink – supplies power and feeds back up to 95.5% of absorbed energy to the grid.
Mid-voltage high-power: 500V / 30A / 5kW in 3U form factor, ideal for EV battery modules (400V class), fuel cell stacks, and DC microgrids.
Built-in function generator with sine, triangle, rectangular, trapezoid, arbitrary (99 points), ramp, DIN 40839, plus PV / fuel cell simulation (EN 50530 compliant).
Battery test and MPPT tracking – charge/discharge profiling, Ah/Wh counters, and solar inverter MPPT emulation.
Master-Slave parallel – up to 64 units for 960kW total system power; true current sharing via Share bus and digital MS bus.

Note: Remote sensing compensates up to 5% of U_Nom. Always use DC terminal covers – hazardous voltage possible (500V).

Key Specs (EA-PSB 10500-30 3U)

Voltage range: 0-500V (adjustable).
Current range: ±30A (bidirectional).
Power range: ±5000W (source/sink, autoranging).
Internal resistance simulation (source): 0.6Ω – 1000Ω.
Rise/Fall time (CV): ≤10ms (10-90%).
Display accuracy: Voltage ≤0.05% FS, Current ≤0.1% FS.
Insulation: AC input to DC output 3750Vrms; DC minus to PE ±1500V, DC plus to PE +2000V.
Output capacitance: 180μF.
Efficiency: up to 95.5% at full load and full output voltage.
Dimensions (WxHxD): 19" x 3U x 668mm. Weight: ~18 kg (40 lb).

Interfaces & Remote Control

Standard digital: USB (rear B) + Ethernet (100M) supporting SCPI and ModBus RTU; USB host (front) for data logging/sequencing.
Built-in analog interface (15-pin D-Sub): 0-5V / 0-10V selectable range for set/readback of U/I/P/R; includes remote on/off, alarm outputs, and CV/CC status.
Optional plug-in modules (IF-AB series): Profibus, ProfiNet, CAN, CANopen, RS232, ModBus TCP, EtherCAT – hot-swappable (device off).
Web server on LAN port for configuration and manual SCPI commands.
Remote sense for voltage drop compensation (max 5% of U_Nom).

Best for / Not for

Best for: Battery module testing (EV, ESS up to 500V), fuel cell stack evaluation, solar inverter MPPT tracking (EN 50530), on-board charger (OBC) test, DC-DC converter validation, and bi-directional grid simulation.
Not for: Applications requiring output above 500V or above ±30A per unit (use master-slave parallel); single-quadrant only applications (bidirectional features not needed).

Selection Checklist + Integration

Confirm AC supply: 3-phase 380-480V recommended for full 5000W; on 208V derated to 3000W.
DC connection: Copper busbar on rear panel. For parallel systems, use vertical copper rails.
Mounting: 19" rack, 3U height, allow >30cm rear clearance for airflow. Optional water cooling available for demanding environments.
For master-slave parallel: Connect Share bus (BNC) and MS bus (RJ45 CAT5); configure termination (BIAS/TERM) per manual. Up to 64 units.
For energy recovery: Ensure grid connection can accept regenerated power; local regulations may require grid protection device (e.g., VDE-AR-N 4105).
For battery test: Use built-in battery test profiles (static/dynamic discharge, static charge, dynamic test).
For PV simulation: Prepare IU table (4096 points) on USB or use internal EN50530 day trend; connect a solar inverter as load.
Firmware: KE/HMI 3.02+ recommended for extended functions and SEMI F47 support.